WO2024051684A1 - 电压调整方法及相关装置 - Google Patents

电压调整方法及相关装置 Download PDF

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Publication number
WO2024051684A1
WO2024051684A1 PCT/CN2023/116991 CN2023116991W WO2024051684A1 WO 2024051684 A1 WO2024051684 A1 WO 2024051684A1 CN 2023116991 W CN2023116991 W CN 2023116991W WO 2024051684 A1 WO2024051684 A1 WO 2024051684A1
Authority
WO
WIPO (PCT)
Prior art keywords
aperture
electronic device
lens
motor
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/116991
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English (en)
French (fr)
Inventor
姚成军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to US18/994,917 priority Critical patent/US20260025573A1/en
Priority to EP23862378.9A priority patent/EP4531410A4/en
Publication of WO2024051684A1 publication Critical patent/WO2024051684A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/65—Control of camera operation in relation to power supply
    • H04N23/651—Control of camera operation in relation to power supply for reducing power consumption by affecting camera operations, e.g. sleep mode, hibernation mode or power off of selective parts of the camera
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/26—Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/02—Details of stopping control
    • H02P3/025—Details of stopping control holding the rotor in a fixed position after deceleration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/02—Arrangements for regulating or controlling the speed or torque of electric DC motors the DC motors being of the linear type
    • H02P7/025—Arrangements for regulating or controlling the speed or torque of electric DC motors the DC motors being of the linear type the DC motors being of the moving coil type, e.g. voice coil motors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H04N23/675—Focus control based on electronic image sensor signals comprising setting of focusing regions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components

Definitions

  • the present application relates to the field of terminals, and in particular to voltage adjustment methods and related devices.
  • the camera module is a research focus of developers on how to reduce the power consumption of the camera module.
  • terminal equipment generally includes multiple camera modules, such as telephoto camera modules, wide-angle camera modules, ultra-wide-angle camera modules, etc.
  • one method is to switch the camera module used in the shooting mode to the working mode according to the shooting mode selected by the user, and switch the working mode of other camera modules to low Power consumption mode to reduce the power consumption of other camera modules as much as possible.
  • the wide-angle camera module is switched to the working mode, the images collected by the wide-angle camera are displayed in the user interface, and other camera modules are switched to the low-power mode.
  • this method can only reduce the power consumed by other camera modules that are not related to the current shooting process, and does not improve the power consumption of the camera module being used during the current shooting process. Therefore, how to reduce the power consumption of the camera module used in the current shooting process is an issue that needs to be solved urgently.
  • This application provides a voltage adjustment method and related devices, which enables dynamic adjustment of the driving voltage of the driving chip in the camera and reduces the power consumption of the camera.
  • Embodiments of the present application provide a voltage adjustment method.
  • the method is applied to an electronic device including a camera.
  • the camera includes a lens, a motor and a drive chip.
  • the method includes: the electronic device starts the camera and collects images through the camera; the electronic device provides a third A driving voltage is provided to the driving chip to drive the motor to move the lens to the first position; the electronic device provides a second driving voltage to the driving chip to drive the motor to move the lens to the second position; the second driving voltage is different from the first driving voltage , the second position is different from the first position.
  • the electronic device can dynamically adjust the driving voltage of the driver chip according to the moving position of the lens during the process of using the camera to collect images, thereby preventing the driver chip from being in a high voltage state all the time and reducing the power consumption of the driver chip. This in turn reduces the power consumption of the camera used during shooting.
  • the second driving voltage is greater than the first driving voltage, and the distance between the second position and the third position is greater than the distance between the first position and the third position; the third position It is the position of the lens when the motor is not moving the lens.
  • the closer the lens moves to the initial position the smaller the driving voltage of the driver chip. Then, when the lens moves closer, the driving voltage of the driver chip can be reduced to prevent the lens from still applying high voltage to the driver chip when the lens moves closer, thereby achieving the premise that the driver chip can move the lens to the specified position. down, and can reduce the power consumption of the driver chip.
  • the method further includes: the electronic device provides a third driving voltage to the driving chip to drive the motor to move the lens to the first position; wherein the posture when the electronic device provides the third driving voltage , different from the posture when the electronic device provides the first driving voltage; the third driving voltage is different from the first driving voltage.
  • the electronic device controls the lens to move to a designated position, it further determines the voltage that needs to be applied to the driver chip based on the posture of the electronic device, so that the electronic device can further lower the driver chip when it is in a posture where the motor can easily push the lens.
  • the voltage further reduces the power consumption of the driver chip, thereby reducing the power consumption of the camera during operation as much as possible.
  • the posture of the electronic device refers to the angle between the plane of the lens and the horizontal plane.
  • the electronic device provides the third driving voltage
  • the angle between the plane of the lens and the horizontal plane is at the first angle.
  • the device provides the first driving voltage the plane of the lens and the horizontal plane are at a second included angle; the first included angle is smaller than the second included angle, and the third driving voltage is greater than the first driving voltage.
  • the attitude of the electronic device that is, the angle between the lens and the horizontal plane
  • the attitude of the electronic device can be used to characterize the direction in which the motor moves the lens, and then determine the driver chip. the driving voltage.
  • the angle between the plane of the lens and the horizontal plane is larger, that is, the plane of the lens is more perpendicular to the horizontal plane, the motor is closer to moving the lens in the horizontal direction.
  • the voltage required to drive the chip is higher. Small.
  • the clarity of the image captured by the camera when the lens is located at the second position is higher than the clarity of the image captured by the camera when the lens is located at other positions than the second position; After the electronic device provides the second driving voltage to the driving chip to drive the motor to move the lens to the second position, the method further includes: the electronic device continues to provide the fourth driving voltage to the driving chip to drive the motor to keep the lens in the second position.
  • the electronic device can move the position of the lens during the autofocus process, adjust the clarity of the image collected by the camera, and adjust the voltage of the driver chip according to the position of the lens movement until the clarity of the image reaches the highest level and the electronic device ends the automatic Focus and hold the lens at the position corresponding to the current sharpest point. In this way, the power consumption of the camera during the autofocus process can be reduced.
  • the first position and the second position are determined according to an operation of adjusting the position of the lens input by the user.
  • the electronic device can move the position of the lens during manual focusing, determine the position of the lens based on the operation input by the user, and then adjust the voltage of the driver chip based on the position. In this way, the power consumption of the camera during manual focusing can be reduced.
  • the electronic device provides a first driving voltage to the driving chip to drive the motor to move the lens to the first position; the electronic device provides a second driving voltage to the driving chip to drive the motor to move the lens. to the second position, specifically including: the electronic device provides a first driving voltage to the driver chip, and provides the first current to the motor through the driver chip according to the first proportional integral differential PID parameter to drive the motor to move the lens to the first position; electronically The device provides a second driving voltage to the driver chip, and provides a second current to the motor through the driver chip according to the second proportional integral differential PID parameter to drive the motor to move the lens to the second position.
  • the proportional integral differential PID parameters can be used to improve the accuracy of lens movement when the driver chip controls the motor to move the lens, and speed up the lens movement to the target position during the focusing process. Then, when the voltage of the driver chip needs to be adjusted, the electronic device can update the PID parameters to ensure the accuracy of the lens movement.
  • the electronic device pre-stores the first proportional-integral-derivative PID parameters and the second proportional-integral-derivative PID parameters.
  • the method further includes: the electronic device displays the image collected through the camera, wherein the image collected by the electronic device when the lens is in the first position and the lens in The sharpness of the images collected in the second position is different.
  • the user can see through the display screen of the electronic device that the sharpness of the image captured by the camera changes dynamically as the lens position changes.
  • the method further includes: when the electronic device starts the camera, providing a fourth driving voltage to the driving chip to drive the motor to move the lens to the fourth position; the fourth driving voltage is a preset Voltage.
  • the electronic device can provide a preset voltage to the driver chip, so that the motor can quickly move the lens to an initial position and quickly start the focus of the camera.
  • the preset voltage is a high voltage.
  • the high voltage may refer to a voltage whose voltage value is greater than a certain threshold.
  • the electronic device can provide a high voltage to the driver chip by default when starting the camera.
  • embodiments of the present application provide a voltage adjustment method, which method is applied to an electronic device including a camera.
  • the camera includes an aperture, a motor and a drive chip.
  • the method includes: the electronic device starts the camera and collects images through the camera; The electronic device provides a first driving voltage to the driving chip to drive the motor to change the aperture size of the aperture so that the aperture value of the aperture is adjusted to the first value; the electronic device adjusts the first driving voltage to the second driving voltage; the first driving voltage is greater than Second driving voltage.
  • the electronic device can provide high voltage to the driver chip when adjusting the aperture, and provide low voltage to the driver chip after the aperture adjustment is completed.
  • the driver chip can be prevented from being at a high voltage all the time, which reduces the driver chip. power consumption, thereby reducing the power consumption of the camera used during shooting.
  • the electronic device provides a first driving voltage to the driving chip, specifically including: the electronic device adjusts the voltage provided to the driving chip from the third driving voltage to the first driving voltage, and the third driving voltage is less than the first driving voltage.
  • the electronic device can also provide low voltage to the driver chip before the electronic device adjusts the aperture.
  • the driver chip is at a high voltage, thereby achieving the purpose of dynamically adjusting the voltage of the driver chip according to whether the aperture is adjusted or not.
  • the third driving voltage is equal to the second driving voltage.
  • the driver chip has a total of two voltages, one with a higher voltage and one with a lower voltage.
  • the driving voltage of the driver chip is the higher voltage.
  • the driver chip of the driver chip for this lower voltage.
  • the electronic device provides a first driving voltage to the driving chip to drive the motor to change the aperture size of the aperture so that the aperture value of the aperture is adjusted to the first value.
  • the electronic device provides the first driving voltage.
  • the driving voltage is provided to the driving chip, and one or more currents are provided to the motor through the driving chip to drive the motor to adjust the aperture size of the aperture to the first size, so that the aperture value of the aperture is adjusted to the first value; wherein, the plurality of currents include The first current and the second current, the second current is determined according to the aperture size of the aperture adjusted by the motor under the action of the first current.
  • the driver chip can reversely adjust the thrust applied to the aperture blades by the motor based on the position of the aperture blade movement, so that the aperture size of the aperture is adjusted to a more accurate size corresponding to the aperture value.
  • the method further includes: the electronic device provides one or more currents to the motor through the driving chip to drive the motor to move the aperture.
  • the aperture size remains at the first size.
  • the driver chip can dynamically adjust the thrust of the motor to keep the aperture size of the aperture unchanged, thus avoiding the change in the voltage of the driver chip causing the aperture to change. Jitter affects the camera's picture rendering effect.
  • the first value is an aperture value other than the maximum aperture value and the minimum aperture value.
  • the above-mentioned driver chip can be used to adjust the aperture by reversely adjusting the thrust of the motor according to a certain position of the aperture blade, making the aperture adjustment more precise.
  • the electronic device provides a first driving voltage to the driving chip to drive the motor to change the aperture size of the aperture so that the aperture value of the aperture is adjusted to the first value.
  • the electronic device provides the first driving voltage.
  • the driving voltage is provided to the driving chip, and a third current is provided to the motor through the driving chip, so that the motor generates a first thrust to change the aperture size of the aperture, so that the aperture value of the aperture is adjusted to the first value.
  • the driver chip can also reversely adjust the thrust exerted by the motor based on the position of the aperture blade movement.
  • the driver chip can only provide a fixed current to the motor, so that the motor generates thrust to adjust the aperture under the action of the current. aperture size to quickly adjust the aperture.
  • the method further includes: the electronic device provides the second voltage to the driving chip, and provides the fourth current to the driving chip through the driving chip.
  • the motor keeps the aperture size changing under the action of the second thrust force.
  • the fourth current may be less than the maximum current that the driver chip can provide to the motor when driven at the second voltage. In this way, the power consumption of the driver chip can be further reduced and the power consumption of the camera used in the current shooting process can be improved.
  • the first value is the maximum aperture value or the minimum aperture value of the aperture.
  • the aperture when the aperture needs to be adjusted to the maximum aperture or the minimum aperture, the aperture can be adjusted by using the above-mentioned driver chip to only provide a fixed current to the motor.
  • the electronic device is pre-stored with the third current and/or the fourth current.
  • the first value is an aperture value of the aperture when the brightness of the image collected by the electronic device is equal to the threshold value.
  • Electronics can adjust the aperture size so that the brightness of the image captured by the camera reaches a threshold so that the brightness of the image is neither too bright nor too dark.
  • the electronic device can dynamically change the voltage of the driver chip according to the adjustment of the aperture during the automatic exposure process, thereby reducing the power consumption of the camera during the automatic exposure process.
  • the method further includes: the electronic device detects a second operation, and the second operation is used to indicate the first value.
  • the electronic device can dynamically change the voltage of the driver chip according to the adjustment of the aperture when the user manually adjusts the aperture, thereby reducing the power consumption generated by the camera during the user's manual adjustment of the aperture.
  • the method further includes: the electronic device displays the image collected through the camera, wherein the electronic device adjusts the aperture value to the first value before and to After the first value, the acquired images differ in brightness and/or depth of field.
  • the electronic device can display an image in which the brightness and/or depth of field of the image changes following the adjustment of the aperture.
  • embodiments of the present application provide an electronic device, including a camera, a memory, one or more processors, and one or more programs, wherein the camera includes a lens, a motor, and a driver chip; one or more processors When executing one or more programs, the electronic device causes the electronic device to implement the method described in the first aspect or any one of the implementation modes of the first aspect.
  • embodiments of the present application provide an electronic device, including a camera, a memory, one or more processors, and one or more programs, wherein the camera includes an aperture, a motor, and a driver chip; one or more processors When executing one or more programs, the electronic device causes the electronic device to implement the method described in the first aspect or any one of the implementation modes of the first aspect.
  • embodiments of the present application provide a computer-readable storage medium, including instructions.
  • the electronic device When the instructions are run on an electronic device, the electronic device causes the electronic device to execute the first aspect or any one of the implementations in the first aspect, The method described in the second aspect or any one of the embodiments of the second aspect.
  • embodiments of the present application provide a computer program product.
  • the computer program product When the computer program product is run on a computer, it causes the computer to execute the first aspect or any one of the first aspects, the second aspect or the third aspect. The method described in any one of the two aspects.
  • the voltage adjustment method provided by the embodiments of the present application can adjust the voltage of the driver chip in the camera.
  • the driving voltage of the driver chip can be dynamically adjusted according to the thrust required to move the lens to the target position to avoid control.
  • the driver chip that moves the lens is always at a high voltage; or, for the driver chip that controls the change of the aperture size, the drive voltage of the driver chip can be adjusted according to whether the aperture changes or not, so as to avoid the driver chip that controls the change of the aperture from being at a high voltage. In this way, the power consumption of the camera used during current shooting can be reduced and the standby time of the electronic device during use of the camera can be extended.
  • FIG. 1A is a schematic diagram of the hardware structure of the electronic device 100 provided by an embodiment of the present application.
  • Figure 1B is a software structure block diagram of the electronic device 100 provided by the embodiment of the present application.
  • Figure 2 is a schematic structural diagram of a voltage adjustment device provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of focusing provided by the embodiment of the present application.
  • Figure 4 is a schematic flow chart of a voltage adjustment method provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of the mapping relationship between the position of the lens and the voltage provided by the embodiment of the present application.
  • Figure 6 is a schematic diagram involved in adjusting the aperture provided by the embodiment of the present application.
  • Figure 7 is a schematic flow chart of another voltage adjustment method provided by an embodiment of the present application.
  • FIG. 8 shows the aperture value included in the electronic device 100 provided by the embodiment of the present application.
  • first and second are used for descriptive purposes only and shall not be understood as implying or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, “plurality” The meaning is two or more.
  • a camera module is composed of multiple components.
  • a camera module can include: lens, aperture, motor, photosensitive chip, driver chip and other components.
  • the camera module is in working condition during the shooting process, some components in the actual camera module may not need to be in working condition at all times.
  • the motor can be used to drive the movement of the lens, adjust the clarity of the image displayed by the device, and achieve focus during shooting. If the motor only needs a small thrust to push the lens or does not need to push the lens, the power of the driver chip that controls the motor can be reduced. driving voltage, thereby reducing the power consumption of the driver chip and improving the power consumption of the camera module used in the shooting process.
  • the motor that drives the lens movement will be referred to as the focus motor below.
  • the aperture can be used to change the amount of light entering.
  • the size of the aperture through the motor By adjusting the size of the aperture through the motor, the brightness or depth of field of the image displayed by the device can be adjusted. If the aperture does not need to be adjusted, the driving voltage of the driver chip that controls the motor can be reduced, reducing the power of the driver chip. Power consumption, to improve the power consumption of the camera module used in the shooting process.
  • the motor that drives the aperture blades to move will be called an aperture motor in the following.
  • Embodiments of the present application provide a voltage adjustment method, which can be used to dynamically adjust the driving voltage of the driving chip that controls the focus motor according to the moving position of the lens.
  • a voltage adjustment method which can be used to dynamically adjust the driving voltage of the driving chip that controls the focus motor according to the moving position of the lens.
  • images are collected through the camera.
  • the driving voltage of the driver chip based on the target position, so that the driver chip, driven by the driving voltage, controls the focus motor to push the lens to the target position and adjust the clarity of the image.
  • the driving voltage of the driving chip is dynamically adjusted according to the moving position of the lens, which can prevent the driving voltage of the driving chip from always being at a high voltage and improve the power consumption of the camera module during operation.
  • embodiments of the present application also provide a voltage adjustment method, which can be used to dynamically adjust the driving voltage of the driving chip that controls the aperture motor according to whether the aperture size changes.
  • the driving voltage of the driver chip is low voltage by default.
  • the control The aperture motor changes the aperture size of the aperture, adjusts the aperture value of the aperture to the target aperture value, so as to obtain the image collected by the camera after the aperture value is adjusted, and finally adjusts the driving voltage of the driver chip to a low voltage.
  • the target aperture value can be the aperture value set when the user manually adjusts the aperture, or it can be the aperture value calculated by the automatic exposure algorithm when the electronic device activates the automatic exposure function.
  • the specific determination of the target aperture value please refer to the subsequent details, which will not be discussed here.
  • the driving voltage of the driver chip of the aperture motor is low voltage by default. Only when the aperture needs to be adjusted, the driving voltage of the driver chip is temporarily adjusted to a high voltage, which avoids the driving voltage of the driver chip being always at a high voltage and improves the Power loss during the operation of the camera module.
  • FIG. 1A shows a schematic diagram of the hardware structure of the electronic device 100 .
  • the electronic device 100 may be a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (personal digital assistant) digital assistant (PDA), augmented reality (AR) device, virtual reality (VR) device, artificial intelligence (AI) device, wearable device, vehicle-mounted device, smart home device and/or Smart city equipment, the embodiment of this application does not place special restrictions on the specific type of electronic equipment.
  • PDA personal digital assistant
  • AR augmented reality
  • VR virtual reality
  • AI artificial intelligence
  • wearable device wearable device
  • vehicle-mounted device smart home device and/or Smart city equipment
  • the electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module (Power Management Unit, PMU) 141, and a battery. 142.
  • SIM subscriber identification module
  • the sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light. Sensor 180L, bone conduction sensor 180M, etc.
  • the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the electronic device 100 .
  • the electronic device 100 may include more or fewer components than shown in the figures, or some components may be combined, some components may be separated, or some components may be arranged differently.
  • the components illustrated may be implemented in hardware, software, or a combination of software and hardware.
  • the processor 110 may include one or more processing units.
  • the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processing unit (GPU), and an image signal processor. (image signal processor, ISP), controller, video codec, digital signal processor (digital signal processor, DSP), baseband processor, and/or neural network processor (neural-network processing unit, NPU), etc.
  • application processor application processor, AP
  • modem processor graphics processing unit
  • GPU graphics processing unit
  • image signal processor image signal processor
  • ISP image signal processor
  • controller video codec
  • digital signal processor digital signal processor
  • DSP digital signal processor
  • baseband processor baseband processor
  • neural network processor neural-network processing unit
  • the controller can generate operation control signals based on the instruction operation code and timing signals to complete the control of fetching and executing instructions.
  • the processor 110 may also be provided with a memory for storing instructions and data.
  • the memory in processor 110 is cache memory. This memory may hold instructions or data that have been recently used or recycled by processor 110 . If the processor 110 needs to use the instructions or data again, it can be called directly from the memory. Repeated access is avoided and the waiting time of the processor 110 is reduced, thus improving the efficiency of the system.
  • the processor 110 can calculate the sharpness of the image collected by the camera 193, and calculate the parameters input to the driver chip 193E of the focus motor 193C through the auto-focus algorithm, such as a code value, or based on the lens position input by the user. , calculate the parameter corresponding to the lens position.
  • this parameter can be used to control the current size output by the driver chip 193E to the focus motor 193C, so that the focus motor 193C can generate different sizes of thrust to push the lens 193A according to the different sizes of current, so that the lens 193A moves to Different positions, thereby adjusting the clarity of the image collected by the camera 193.
  • the processor 110 may specifically calculate the sharpness of the image through ISP to determine the parameter.
  • the specific description of the focus motor 193C and the driver chip 193E can be found in the subsequent content, and will not be described in detail here.
  • the processor 110 can calculate the brightness of the image collected by the camera 193 and determine the target aperture value through an automatic exposure algorithm, or obtain the target aperture value set by the user and calculate the input to the driver chip 193E of the aperture motor 193D. parameters, such as code value. This parameter can be used to control the current size output by the driver chip 193E to the aperture motor 193D, so that the aperture motor 193D can generate different sizes of thrust to push the blades of the aperture 193B according to the different sizes of current, so that the aperture value of the aperture 193B is adjusted to the target aperture. value, so that after the aperture value is adjusted to the target aperture value, the brightness of the image reaches the threshold value, thereby realizing automatic exposure of the camera 193 .
  • the processor 110 may specifically calculate the brightness of the image through ISP to determine the parameter.
  • the specific description of the aperture motor 193D and the driver chip 193E can be found in the following content, and will not be described in detail here.
  • the charging management module 140 is used to receive charging input from the charger. While the charging management module 140 charges the battery 142, it can also provide power to the electronic device through the power management module 141.
  • the power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110.
  • the power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, the internal memory 121, the display screen 194, the camera 193, the wireless communication module 160, and the like.
  • the power management module 141 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters.
  • the power management module 141 may also be provided in the processor 110 .
  • the power management module 141 and the charging management module 140 may also be provided in the same device.
  • power management module 141 may be used to power one or more components in camera 193 .
  • the power management module 141 can supply power to the driver chip 193E of the focus motor 193C or the aperture motor 193D in the camera 193 .
  • the power management module 141 can provide two or more voltage output pins, and different pins can be used to provide voltages of different sizes.
  • the driving chip 193E can be switched to connect to different voltage output pins to achieve the effect of dynamically adjusting the driving voltage of the driving chip 193E.
  • the driving voltage of the driving chip 193E of the focus motor 193C can be controlled according to the moving position of the lens 193A; and the driving voltage of the driving chip 193E of the aperture motor 193D can be controlled according to whether the aperture size changes.
  • the driving voltage of the driving chip 193E of the focus motor 193C and the aperture motor 193D can be controlled according to whether the aperture size changes.
  • the wireless communication function of the electronic device 100 can be implemented through the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.
  • Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals.
  • Each antenna in electronic device 100 may be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization.
  • the mobile communication module 150 can provide solutions for wireless communication including 2G/3G/4G/5G applied on the electronic device 100 .
  • the mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), etc.
  • a modem processor may include a modulator and a demodulator.
  • the modulator is used to modulate the low-frequency baseband signal to be sent into a medium-high frequency signal.
  • the demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal.
  • the demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing.
  • the application processor outputs sound signals through audio devices (not limited to speaker 170A, receiver 170B, etc.), or displays images or videos through display screen 194.
  • the wireless communication module 160 can provide applications on the electronic device 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (bluetooth, BT), and global navigation satellites.
  • WLAN wireless local area networks
  • WiFi wireless fidelity
  • BT Bluetooth
  • global navigation satellites System (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions.
  • the wireless communication module 160 may be one or more devices integrating at least one communication processing module.
  • the electronic device 100 implements display functions through a GPU, a display screen 194, an application processor, and the like.
  • the GPU is an image processing microprocessor and is connected to the display screen 194 and the application processor. GPUs are used to perform mathematical and geometric calculations for graphics rendering.
  • Processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.
  • the display screen 194 is used to display images, videos, etc.
  • the display screen 194 may be used to display images captured by the camera 193 in real time.
  • the electronic device 100 can implement the shooting function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.
  • the ISP is used to process the data fed back by the camera 193. For example, when taking a photo, the shutter is opened and the light is transmitted to the camera photosensitive chip through the lens. The optical signal is converted into an electrical signal. The camera photosensitive chip transfers the electrical signal to the ISP for processing and converts it into an image visible to the naked eye. ISP can also perform algorithm optimization on image noise and brightness. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be provided in the camera 193.
  • Camera 193 is used to capture still images or video. The object passes through the lens to generate an optical image that is projected onto the photosensitive chip.
  • the electronic device 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.
  • the camera 193 may include: lens 193A, aperture 193B, focus motor 193C, aperture motor 193D, driver chip 193E, photosensitive chip 193F and other components.
  • the camera since the camera is composed of multiple components, the camera may also be called a camera module. in:
  • the lens 193A can change the propagation direction of light and focus the reflected light of the subject on the photosensitive chip 193F. In addition, changing the position of the lens 193A can change the clarity of the image collected by the camera 193.
  • Aperture 193B is composed of multiple aperture blades. Moving the position of aperture blades can change the aperture size of aperture 193B, changing the amount of light reflected from the subject through lens 193A and gathering on photosensitive chip 193F, that is, changing the amount of light entering, and thus changing Display effects such as image brightness or depth of field.
  • different aperture sizes of aperture 193B correspond to different aperture values. The larger the aperture of aperture 193B, the smaller the aperture value, the greater the amount of light entering, the higher the brightness of the image, and the shallower the depth of field (the blurrier the background). The aperture of aperture 193B The smaller the value, the larger the aperture value, the smaller the amount of light entering, the lower the brightness of the image, and the deeper the depth of field (the clearer the background).
  • the focus motor 193C is used to push the movement of the lens 193A, change the distance between the lens 193A and the photosensitive chip 193F, and thereby change the clarity of the image collected by the camera 193.
  • the focus motor 193C can convert electrical energy, electromagnetic energy, etc. into mechanical energy to drive the movement of the lens 193A.
  • the focus motor 193C may be a voice coil motor, an ultrasonic motor, a stepper motor, a memory alloy motor, or other types of motors.
  • the voice coil motor can drive the shrapnel or spring to operate by controlling the current, thereby adjusting the position of the lens 193A to achieve a clear image of the object being photographed.
  • the aperture motor 193D is used to push the aperture blades in the aperture 193B to move, change the aperture size of the aperture 193B, and thereby change the brightness or depth of the image collected by the camera 193.
  • the driver chip 193E is used to deliver current to one or more components in the camera 193 and control the driving of the one or more components. Among them, the driver chip 193E can control the amount of current delivered according to the obtained code value.
  • the camera 193 may include 1 or M driver chips 193E, where M is a positive integer greater than 1.
  • the driving chip 193E may include a driving chip for the focus motor 193C and a driving chip for the aperture motor 193D.
  • the driver chip of the focus motor 193C is used to drive the focus motor 193C and control the focus motor 193C to move the lens 193A to the target position.
  • the driver chip of the aperture motor 193D is used to drive the aperture motor 193D and control the aperture motor 193D to set the aperture value of the aperture 193B. Adjust to target aperture value.
  • the driving chip 193E can control the driving of the focus motor 193C and the aperture motor 193D under the dynamically changing driving voltage provided by the power management module 141 .
  • the driving chip of the focus motor 193C can determine the required driving voltage according to the moving position of the lens 193A.
  • the driving chip of the focus motor 193C can determine the required driving voltage according to the moving position of the lens 193A.
  • the driver chip of the aperture motor 193D can determine the required driving voltage according to whether the aperture 193B is adjusted.
  • the driving voltage required by the driving chip of the aperture motor 193D during the adjustment process of the aperture 193B is higher than the driving voltage required when the aperture 193B is not adjusted.
  • the power management module 141 provides dynamically changing driving voltages to the driving chip 193E of the focus motor 193C and the aperture motor 193D, please refer to the relevant description in FIG. 2 and will not be described again here.
  • the photosensitive chip 193F can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor.
  • CMOS complementary metal-oxide-semiconductor
  • the photosensitive chip 193F can convert the optical signal into an electrical signal, and then transfer the electrical signal to the ISP to convert it into a digital image signal.
  • ISP outputs digital image signals to DSP for processing.
  • DSP converts digital image signals into standard RGB, YUV and other format image signals.
  • Digital signal processors are used to process digital signals. In addition to digital image signals, they can also process other digital signals. For example, when the electronic device 100 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.
  • Video codecs are used to compress or decompress digital video.
  • Electronic device 100 may support one or more video codecs. In this way, the electronic device 100 can play or record videos in multiple encoding formats, such as moving picture experts group (MPEG) 1, MPEG2, MPEG3, MPEG4, etc.
  • MPEG moving picture experts group
  • MPEG2 MPEG2, MPEG3, MPEG4, etc.
  • the internal memory 121 may include one or more random access memories (RAM) and one or more non-volatile memories (NVM).
  • RAM random access memories
  • NVM non-volatile memories
  • the internal memory 121 can be used to store an auto-focus algorithm, an auto-exposure algorithm, etc.
  • the auto-focus algorithm can be used to automatically adjust the clarity of the image collected by the camera 193 so that the clarity of the image collected by the camera 193 reaches
  • the automatic exposure algorithm can be used to automatically adjust the brightness of the image collected by the camera 193 so that the brightness of the image collected by the camera 193 is equal to the threshold.
  • the internal memory 121 can also be used to store a mapping table, for example, a mapping table between the target position of the motor movement and the target voltage.
  • the electronic device 100 can determine the driver chip of the focus motor 193C according to the mapping table when the current lens 193A moves to the target position.
  • the required target voltage is another example of a mapping table between the aperture value and the position of the aperture blade.
  • the electronic device 100 can determine the target position where the aperture blade needs to move corresponding to the aperture size that currently needs to be adjusted based on the mapping table.
  • the mapping table stored in the internal memory 121 please refer to the following content, and will not be described in detail here.
  • the external memory interface 120 can be used to connect an external non-volatile memory to expand the storage capacity of the electronic device 100 .
  • the external non-volatile memory communicates with the processor 110 through the external memory interface 120 to implement the data storage function. For example, save music, video and other files in external non-volatile memory.
  • the electronic device 100 can implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the headphone interface 170D, and the application processor. Such as music playback, recording, etc.
  • the audio module 170 is used to convert digital audio information into analog audio signal output, and is also used to convert analog audio input into digital audio signals. Audio module 170 may also be used to encode and decode audio signals.
  • Speaker 170A also called “speaker” is used to convert audio electrical signals into sound signals.
  • the electronic device 100 can listen to music through the speaker 170A, or listen to hands-free calls.
  • Receiver 170B also called “earpiece” is used to convert audio electrical signals into sound signals.
  • the electronic device 100 answers a call or a voice message, the voice can be heard by bringing the receiver 170B close to the human ear.
  • Microphone 170C also called “microphone” or “microphone” is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can speak close to the microphone 170C with the human mouth and input the sound signal to the microphone 170C.
  • the electronic device 100 may be provided with at least one microphone 170C.
  • the headphone interface 170D is used to connect wired headphones.
  • the pressure sensor 180A is used to sense pressure signals and can convert the pressure signals into electrical signals.
  • the gyro sensor 180B may be used to determine the motion posture of the electronic device 100 .
  • the angular velocity of electronic device 100 about three axes ie, x, y, and z axes
  • the gyro sensor 180B can be used for image stabilization. For example, when the shutter is pressed, the gyro sensor 180B detects the angle at which the electronic device 100 shakes, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to offset the shake of the electronic device 100 through reverse movement to achieve anti-shake.
  • the gyro sensor 180B can also be used for navigation and somatosensory game scenes.
  • Air pressure sensor 180C is used to measure air pressure. In some embodiments, the electronic device 100 calculates the altitude through the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.
  • Magnetic sensor 180D includes a Hall sensor.
  • the electronic device 100 may utilize the magnetic sensor 180D to detect opening and closing of the flip holster.
  • the acceleration sensor 180E can detect the acceleration of the electronic device 100 in various directions (generally three axes). When the electronic device 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of electronic devices and be used in horizontal and vertical screen switching, pedometer and other applications.
  • Distance sensor 180F for measuring distance.
  • Electronic device 100 can measure distance via infrared or laser. In some embodiments, when shooting a scene, the electronic device 100 may utilize the distance sensor 180F to measure distance to achieve fast focusing.
  • Proximity light sensor 180G may include, for example, a light emitting diode (LED) and a light detector, such as a photodiode.
  • Electronic device 100 uses photodiodes to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near the electronic device 100 . When insufficient reflected light is detected, the electronic device 100 may determine that there is no object near the electronic device 100 .
  • the ambient light sensor 180L is used to sense ambient light brightness.
  • the electronic device 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness.
  • the ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures.
  • Fingerprint sensor 180H is used to collect fingerprints.
  • the electronic device 100 can use the collected fingerprint characteristics to achieve fingerprint unlocking, access to application locks, fingerprint photography, fingerprint answering of incoming calls, etc.
  • Temperature sensor 180J is used to detect temperature.
  • the electronic device 100 utilizes the temperature detected by the temperature sensor 180J to execute the temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the electronic device 100 reduces the performance of a processor located near the temperature sensor 180J in order to reduce power consumption and implement thermal protection.
  • Touch sensor 180K also known as “touch device”.
  • the touch sensor 180K can be disposed on the display screen 194.
  • the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen”.
  • the touch sensor 180K is used to detect a touch operation on or near the touch sensor 180K.
  • the touch sensor can pass the detected touch operation to the application processor to determine the touch event type.
  • Bone conduction sensor 180M can acquire vibration signals.
  • the buttons 190 include a power button, a volume button, etc.
  • the electronic device 100 may receive key inputs and generate key signal inputs related to user settings and function control of the electronic device 100 .
  • the motor 191 can generate vibration prompts.
  • the motor 191 can be used for vibration prompts for incoming calls and can also be used for touch vibration feedback.
  • the indicator 192 may be an indicator light, which may be used to indicate charging status, power changes, or may be used to indicate messages, missed calls, notifications, etc.
  • the SIM card interface 195 is used to connect a SIM card.
  • the SIM card can be connected to or separated from the electronic device 100 by inserting it into the SIM card interface 195 or pulling it out from the SIM card interface 195 .
  • the electronic device may be a portable terminal device equipped with iOS, Android, Microsoft or other operating systems, such as a mobile phone, a tablet, a wearable device, etc., or a laptop computer (Laptop) with a touch-sensitive surface or touch panel.
  • Non-portable terminal devices such as desktop computers with touch-sensitive surfaces or touch panels.
  • the software system of the electronic device 100 may adopt a layered architecture, an event-driven architecture, a microkernel architecture, a microservice architecture, or a cloud architecture. This embodiment of the present invention takes the Android system with a layered architecture as an example to illustrate the software structure of the electronic device 100 .
  • FIG. 1B is a software structure block diagram of the electronic device 100 according to the embodiment of the present application.
  • the layered architecture divides the software into several layers, and each layer has clear roles and division of labor.
  • the layers communicate through software interfaces.
  • the Android system is divided into four layers, from top to bottom: application layer, application framework layer, Android runtime and system libraries, and kernel layer.
  • the application layer can include a series of application packages.
  • the application package can include camera, gallery, calendar, calling, map, navigation, WLAN, Bluetooth, music, video, short message and other applications.
  • the application framework layer provides an application programming interface (API) and programming framework for applications in the application layer.
  • API application programming interface
  • the application framework layer includes some predefined functions.
  • the application framework layer can include a window manager, content provider, view system, phone manager, resource manager, notification manager, etc.
  • a window manager is used to manage window programs.
  • the window manager can obtain the display size, determine whether there is a status bar, lock the screen, capture the screen, etc.
  • Content providers are used to store and retrieve data and make this data accessible to applications.
  • Said data can include videos, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.
  • the view system includes visual controls, such as controls that display text, controls that display pictures, etc.
  • a view system can be used to build applications.
  • the display interface can be composed of one or more views.
  • a display interface including a text message notification icon may include a view for displaying text and a view for displaying pictures.
  • the phone manager is used to provide communication functions of the electronic device 100 .
  • call status management including connected, hung up, etc.
  • the resource manager provides various resources to applications, such as localized strings, icons, pictures, layout files, video files, etc.
  • the notification manager allows applications to display notification information in the status bar, which can be used to convey notification-type messages and can automatically disappear after a short stay without user interaction.
  • the notification manager is used to notify download completion, message reminders, etc.
  • the notification manager can also be notifications that appear in the status bar at the top of the system in the form of charts or scroll bar text, such as notifications for applications running in the background, or notifications that appear on the screen in the form of conversation windows. For example, text information is prompted in the status bar, a beep sounds, the electronic device vibrates, the indicator light flashes, etc.
  • Android Runtime includes core libraries and virtual machines. Android runtime is responsible for the scheduling and management of the Android system.
  • the core library contains two parts: one is the functional functions that need to be called by the Java language, and the other is the core library of Android.
  • the application layer and application framework layer run in virtual machines.
  • the virtual machine executes the java files of the application layer and application framework layer into binary files.
  • the virtual machine is used to perform object life cycle management, stack management, thread management, security and exception management, and garbage collection and other functions.
  • System libraries can include multiple functional modules. For example: surface manager (surface manager), media libraries (Media Libraries), 3D graphics processing libraries (for example: OpenGL ES), 2D graphics engines (for example: SGL), etc.
  • the surface manager is used to manage the display subsystem and provides the fusion of 2D and 3D layers for multiple applications.
  • the media library supports playback and recording of a variety of commonly used audio and video formats, as well as static image files, etc.
  • the media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.
  • the 3D graphics processing library is used to implement 3D graphics drawing, image rendering, composition, and layer processing.
  • 2D Graphics Engine is a drawing engine for 2D drawing.
  • the kernel layer is the layer between hardware and software.
  • the kernel layer contains at least display driver, camera driver, audio driver, and sensor driver.
  • the following exemplifies the workflow of the software and hardware of the electronic device 100 in conjunction with capturing the photographing scene.
  • the corresponding hardware interrupt is sent to the kernel layer.
  • the kernel layer processes touch operations into raw input events (including touch coordinates, timestamps of touch operations, and other information). Raw input events are stored in the kernel layer.
  • the application framework layer obtains the original input event from the kernel layer and identifies the control corresponding to the input event. Taking the touch operation as a touch click operation and the control corresponding to the click operation as a camera application icon control as an example, the camera application calls the interface of the application framework layer to start the camera application, and then starts the camera driver by calling the kernel layer. Camera 193 captures still images or video.
  • FIG. 2 is a schematic structural diagram of a voltage adjustment device provided by an embodiment of the present application.
  • the voltage adjustment device may include: PMU, driver chip 1, and driver chip 2. in:
  • PMU can be used to power driver chip 1 and driver chip 2.
  • the driver chip 1 may refer to the driver chip of the focus motor mentioned above.
  • the driver chip can control the focus motor to move the lens and change the clarity of the image, driven by the driving voltage provided by the PMU.
  • the driver chip 1 can also obtain the code value, control the current delivered to the focus motor based on the code value, determine the drive voltage based on the code value, and notify the PMU of the required drive voltage so that the PMU can dynamically adjust the drive chip. 1 driving voltage.
  • the driving chip 2 may refer to the driving chip of the aperture motor mentioned above.
  • the driver chip can control the aperture motor to change the aperture size under the driving voltage provided by the PMU, thereby changing the brightness or depth of the image.
  • the driving chip 2 can also determine the driving voltage according to whether the aperture size needs to be adjusted, and notify the PMU of the required driving voltage, so that the PMU can dynamically adjust the driving voltage of the driving chip 2 .
  • the PMU can provide multiple power output pins for the driver chip 1. Different output pins can be used to output different voltages, such as the first voltage, the second voltage, the third voltage, etc., and the PMU can obtain the driver chip 1 According to the required voltage, different power output pins are selected for the driver chip 1, and different driving voltages are provided to the driver chip 1.
  • the PMU can provide two power output pins for the driver chip 1, one of which is used to output a high voltage, for example, 3.2V, and the other output pin is used to output a low voltage. , for example, 1.86V.
  • the driver chip 1 can be connected to the high-voltage output pin provided by the PMU by default.
  • the PMU can provide multiple power output pins for the driver chip 2. Different output pins can be used to output different voltages, such as the first voltage, the second voltage, the third voltage, etc.
  • the PMU can obtain the driver chip 2 According to the required voltage, different power output pins are selected for the driver chip 2, and different driving voltages are provided to the driver chip 2.
  • the PMU can provide two power output pins for the driver chip 2, one of which is used to output a high voltage, such as 3.2V, and the other output pin is used to output a low voltage. For example 1.86V.
  • the driver chip 2 can be connected to the low-voltage output pin provided by the PMU by default.
  • the PMU may also provide more or fewer power output pins.
  • the PMU can provide three power output pins for the driver chip 1, including a high voltage output pin, a medium voltage output pin, and a low voltage output pin.
  • these three power output pins can be used for Output voltages of 3.2V, 2.5V, and 1.86V.
  • the PMU can only provide a power output pin for driver chip 2.
  • This power output pin can output a dynamically changing voltage.
  • driver chip 2 requires high voltage
  • the power output pin outputs 3.2V.
  • the power output pin adjusts the output voltage to 1.86V.
  • the high voltage and low voltage mentioned above are only used to indicate the voltage level compared with the two voltages and are not used to limit the numerical value of the voltage.
  • the high voltage and low voltage mentioned below are similar and will not be described again below.
  • Figure 2 shows that the driver chip 1 and the driver chip 2 can be integrated on one chip in the camera module. It should be understood that the driver chip 1 and the driver chip 2 are independent of each other, and the embodiments of the present application do not limit the physical locations of the driver chip 1 and the driver chip 2 .
  • the voltage adjustment device can only be used to dynamically adjust the driving voltage of the driver chip 1. At this time, the voltage adjustment device does not include the driver chip 2, and the multiple voltage output pins provided by the PMU for the driver chip 2, or only The driver chip 2 provides a constant driving voltage. Alternatively, the voltage adjustment device can only be used to dynamically adjust the driving voltage of the driving chip 2. At this time, the PMU does not include the driving chip 1 and multiple voltage output pins provided for the driving chip 1, or only provides the driving chip 1 with Constant driving voltage.
  • FIG. 2 is only an illustrative example and does not constitute a limitation on the embodiment of the present application.
  • the voltage adjustment device may also include more or fewer components.
  • the voltage adjustment device may also include other components in the camera module, such as a focus motor, an aperture motor, and so on.
  • the voltage adjustment method provided by the embodiments of the present application can dynamically adjust the drive of the components in the camera module according to the working conditions of the components. voltage to prevent the component’s driving voltage from remaining at a high voltage, thereby reducing the power consumption of the camera module.
  • the following uses two embodiments to introduce the detailed process of dynamically adjusting the driving voltages of different camera components.
  • FIG. 3 is a schematic diagram of focusing provided by an embodiment of the present application.
  • the reflected light of the subject passes through the lens in the camera and reaches the photosensitive chip for imaging, and then is presented as an image that the user can view on the device.
  • Focusing refers to adjusting the position of one or more lenses in the lens so that the image plane of the subject falls on the imaging surface of the photosensitive chip, thereby achieving a clear image of the subject.
  • the subject includes objects at different distances from the lens in space, focusing can also focus on the subject of the subject, so that the image plane of the subject falls on the imaging surface of the photosensitive chip, achieving the purpose of capturing the subject.
  • the main part of the photographed object is imaged clearly, that is, the distant object in the image is made clear, or the near object in the image is made clear.
  • the focus motor can apply thrust to the lens to move the lens and change the clarity of the image.
  • the voltage adjustment method provided by the embodiment of the present application can dynamically adjust the drive voltage of the driver chip of the focus motor according to the target position that the lens needs to move. For example, when the thrust force required for the lens to reach the target position is larger, the driving voltage is larger, and when the thrust force required for the lens to reach the target position is smaller, the driving voltage is smaller.
  • FIG. 4 is a schematic flowchart of a voltage adjustment method provided by an embodiment of the present application.
  • the method includes:
  • the electronic device 100 starts the camera, the lens in the camera is at the initial position, and the driving voltage of the driver chip is at the initial voltage.
  • the camera of the electronic device 100 may include components such as a lens, a focus motor, a driver chip for the focus motor, a photosensitive chip, and the like.
  • the driver chip of the focus motor can drive the focus motor, control the focus motor to generate thrust to move the lens, thereby changing the distance between the lens and the photosensitive chip, and changing the clarity of the image collected by the camera.
  • the lens, focus motor, driver chip of the focus motor, and photosensitive chip please refer to the relevant content about the lens 193A, the focus motor 193C, the driver chip 193E, and the photosensitive chip 193F in FIG. 1A , and will not be described again here.
  • the electronic device 100 can activate the camera in the following two situations:
  • the electronic device 100 can activate the camera when activating the shooting function.
  • the shooting function may refer to the photo or video function included in the camera application, or may refer to the related functions included in other applications that can trigger shooting, such as image recognition function, code scanning function, video call function, etc.
  • the electronic device 100 may activate the camera after detecting a user's click operation on a camera icon displayed on the desktop.
  • the electronic device 100 may activate the camera after detecting the user's voice instruction to open the camera application.
  • the electronic device 100 may activate the camera after detecting the user's operation to activate the video call function of the chat application.
  • the activated camera may be a preset camera under the shooting function.
  • the electronic device starts a video call function, it starts a camera, and the camera can be a front-facing camera.
  • the electronic device 100 can activate one of the multiple cameras when switching cameras.
  • the electronic device 100 can activate one of the multiple cameras when switching cameras.
  • the electronic device 100 may activate the rear camera when detecting that the user switches cameras, for example, switching a front camera to a rear camera.
  • the electronic device 100 may activate the camera used in the target shooting mode when detecting that the user switches to the target shooting mode.
  • the electronic device 100 can activate the camera corresponding to the target zoom ratio adjusted by the user.
  • the lens in the camera is in the initial position, and the driving voltage of the driver chip of the focus motor is in the initial voltage.
  • the initial position may be a preset position.
  • the initial position may be the farthest end or the center point of the movable range of the lens.
  • the initial voltage can also be a preset voltage, such as 3.2V. It should be understood that this initial voltage can ensure that the lens can be in the initial position after starting the camera. If the initial position of the lens requires the focus motor to exert a large force to achieve it, then the initial voltage should be a high voltage. If the initial position of the lens only requires the focus motor to exert a small force to achieve it, then the initial voltage can be High voltage and low voltage. Therefore, preferably, the initial voltage is a high voltage to ensure that the initial position of the lens can be moved to the initial position no matter how much force the focus motor needs to exert.
  • the embodiment of the present application does not limit the initial position and initial voltage.
  • the initial position may also be called a fourth position
  • the initial voltage may also be called a fourth driving voltage
  • the electronic device 100 collects images through the camera.
  • the image is specifically the reflected light of the subject passing through the lens in the camera, imaging on the photosensitive chip, and further processing by other components, such as ISP, including: linear correction, noise removal, point replacement repair, color interpolation, and white balance. Correction and so on, the resulting image.
  • the image collection by the electronic device 100 through the camera will continue during the process of the electronic device 100 using the camera.
  • the electronic device 100 has been collecting images through the camera.
  • the images collected by the electronic device 100 through the camera include images collected when the lens is at different positions.
  • the electronic device 100 can display the image captured by the camera in real time in a user interface, such as a preview interface, or in a viewfinder.
  • the electronic device 100 determines the target position of the lens.
  • the electronic device 100 may trigger determination of the target position of the lens when starting to focus.
  • focus includes manual focus and autofocus.
  • Manual focus means that the user manually adjusts the position of the lens so that the subject appears clear in the image.
  • Autofocus means that the electronic device 100 automatically adjusts the position of the lens so that the subject appears clearly in the image.
  • the electronic device 100 may include a focus ring.
  • the electronic device 100 may detect the user's operation on the focus ring, trigger the manual focus, and determine the user's adjustment according to the extent of the user's rotation of the focus ring.
  • the target position of the lens may be included in the electronic device 100 .
  • the electronic device 100 can trigger autofocus in the following three situations:
  • the electronic device 100 can trigger to start the camera when starting the shooting function or switching the camera. That is to say, after activating the shooting function, the electronic device 100 can trigger automatic adjustment of the sharpness of the image collected by the currently activated camera to complete automatic focusing. Alternatively, after switching the camera, the electronic device 100 can adjust the clarity of the image captured by the currently switched camera to complete the autofocus.
  • step S101 For details about the timing of starting the camera of the electronic device 100, please refer to the relevant content of the aforementioned step S101, which will not be described again here.
  • the electronic device 100 can trigger the autofocus when the distance between the subject and the lens changes.
  • the electronic device 100 may calculate the sharpness of the image and determine whether the distance from the subject to the camera changes based on the change in the sharpness of the image.
  • the electronic device 100 may detect the distance between the subject and the camera through a sensor, such as an infrared sensor, a distance sensor, etc., to determine whether the distance between the subject and the camera changes.
  • the focus point can be presented as a point in the preview interface or viewfinder during the shooting process. This point and the picture around this point are presented with the highest clarity.
  • the location of the focus point is where the subject is.
  • Changing the focus point can change the subject of the shot and the clearest area of the image. For example, when the subject includes a person in the foreground and a landscape in the background, if the person is taken as the subject of the shot, the person will be the focus point in the image. After focusing, the person will be the clearest in the image. If the scenery is taken as the focus point, If the subject is the subject, then the scenery will be the focus point in the image. After focusing, the scenery will be the clearest in the image.
  • the focus point of the electronic device 100 during the focusing process may be the center point or one or more points near the center point in the preview interface or viewfinder.
  • the electronic device 100 when the electronic device 100 detects that the user changes the focus point, such as a click operation on a certain point on the preview interface of the image, the electronic device 100 can use the position where the click operation is performed as the focus point changed by the user, and trigger automatic focusing on the image. , by moving the lens, the area of the screen affected by the user's click operation is adjusted to the clearest state.
  • the focus point such as a click operation on a certain point on the preview interface of the image
  • timing for the electronic device 100 to start autofocus is not limited to the above three types, and the embodiment of the present application does not limit this.
  • the electronic device 100 may determine the target position of the lens through the auto-focus algorithm.
  • the principle of autofocus is to continuously adjust the distance between the lens and the photosensitive chip, analyze the image clarity obtained by adjusting the lens at different positions, and gradually adjust the lens to the appropriate position to obtain an image with the required clarity, thereby completing The focus of the image.
  • the definition of the image meeting the requirements may mean that the definition of the image reaches the peak or the definition of the subject in the image reaches the peak. Therefore, during the autofocus process, the electronic device 100 needs to determine the position of the lens multiple times, obtain images of the lens at different positions, and dynamically adjust the voltage of the driver chip while moving the lens, that is, repeat steps S103-S106 until The electronic device 100 finds the lens position when the image definition reaches the required level.
  • subsequent steps please refer to the following content.
  • the electronic device 100 can move from one end of the lens movable range to the other end, traverse the values, move the lens to each position of the traversal in turn, and calculate the image clarity of the lens at each position, find the point with the highest clarity, and finally return to the point with the highest clarity, The lens is positioned to achieve autofocus.
  • the electronic device 100 can determine the target position of the next movement by comparing the image clarity of the lens at the previously moved position during the movement of the lens.
  • the next target position when the clarity of the lens at position A is lower than that at position B, the next target position will be closer to position B and farther away from position A. Otherwise, the next target position will be farther away from position B. And take the value close to the A position until the lens gradually gets closer and reaches the position with the highest clarity.
  • image clarity refers to the sensitivity of image detail transformation changes.
  • the electronic device 100 can analyze the clarity of the image through frequency domain functions, grayscale functions, information entropy functions, statistical functions, and other algorithms.
  • the electronic device 100 may determine a parameter, such as a code value, used to indicate the target position of the lens.
  • a parameter such as a code value
  • the current value output by the driver chip to the focus motor can be controlled by this code value.
  • a code value corresponds to a current value.
  • the driver chip can identify the current output to the focus motor based on the code value.
  • the focus motor can generate thrust of different sizes under different currents to push the lens and move the lens to different positions. For example, assuming that the code values corresponding to all movable positions of the lens include 1024 values from 0 to 1023, in the contrast focusing method, the electronic device 100 may perform steps S103-S106 while repeatedly adjusting the lens position. , when determining the target position, determine the code value in sequence including: a code value that increases from 0 to 1023 or a code value that decreases from 1023 to 0, and a code value that returns to the highest point of image clarity.
  • the electronic device 100 determines the target voltage according to the target position.
  • the focus motor changes the position of the lens by applying thrust to the lens.
  • the focus motor needs to exert different thrusts.
  • the driving voltage of the driver chip that drives the focus motor can be determined based on the thrust required by the focus motor. The greater the thrust, the greater the driving voltage; the smaller the thrust, the smaller the driving voltage. In other words, when the thrust required when the lens moves to the first position is greater than the thrust required when the lens moves to the second position, then the target voltage when the target position is the first position is greater than when the target position is the second position. target voltage at the position.
  • the electronic device 100 can be preset with a mapping relationship between lens position and voltage in advance.
  • the mapping relationship indicates the driving voltage required to drive the chip when the lens is moved to different positions.
  • the electronic device 100 is preset with a mapping relationship between a lens position in a first range and a first voltage, and a mapping relationship between a lens position in a second range and a second voltage.
  • the first voltage is to move the lens to the first range.
  • the second voltage is the driving voltage required to drive the chip when the lens is moved to the second range.
  • the first voltage is higher than the second voltage, or if moving the lens to the first range is greater than the thrust force exerted to move the lens to the second range.
  • the thrust force applied when moving into the second range is small, the first voltage is lower than the second voltage. Then, when the target position is within the first range, the target voltage is the first voltage, and when the target position is within the second range, the target voltage is the second voltage.
  • the mapping relationship between the lens position and the voltage can be obtained by the developer applying different driving voltages to the driving chip and testing the lens movement distance during the focusing test experiment. Developers can preset the mapping relationship between lens position and voltage in the electronic device 100 in advance.
  • FIG. 5 illustrates a schematic diagram of the mapping relationship between the position of the lens and the voltage.
  • the voice coil motor drives the shrapnel or spring to operate through current, which can control the lens to move in two opposite directions.
  • the thrust exerted by the voice coil motor is the smallest.
  • the lens can move within the range (a, d).
  • Point 0 is the center point of the lens' movable range (a, d) and is also the starting point of the lens.
  • the code value corresponding to point 0 is 512. That is to say, when the code value received by the driver chip of the aperture motor is 512, the driver chip can control the aperture motor to move the lens to point 0.
  • point a corresponds to The code value is 0, the code value corresponding to point b is c1, the code value corresponding to point c is c2, and the code value corresponding to point d is 1023.
  • the target voltage when the target position of the lens is within the range of (b, c), the target voltage is low voltage.
  • the target position of the lens When the target position of the lens is within the range of (a, b) or (c, d), the target voltage is low.
  • the voltage is high voltage. That is to say, when the target position of the lens is farther from the starting point of the lens, the target voltage is larger, and when the target position of the lens is closer to the starting point of the lens, the target voltage is smaller.
  • Figure 5 is only an illustrative example.
  • the code value representing the lens position and the mapping relationship between the lens position and the voltage do not constitute a limitation on the embodiment of the present application. More can be divided within the movable range of the lens.
  • the voltage level includes more mapping relationships between lens positions and voltages. For example, the first range of lens positions corresponds to voltage A, the second range corresponds to voltage B, and the third range corresponds to voltage C.
  • the electronic device 100 can dynamically adjust the driving voltage of the driving chip according to the moving position of the lens.
  • the driving voltage of the driving chip is the first driving voltage.
  • the driving voltage of the driving chip is the second driving voltage, where the first driving voltage and the second driving voltage Voltage, first position is different than second position.
  • the thrust required by the focus motor to move the lens to the first position is greater, that is, the first position is further away from the position where the lens is not moved (for example, the third position) than the second position, then the third position The first driving voltage is greater than the second driving voltage.
  • the mapping relationship between the lens position and the voltage may be different. This is because when the posture of the electronic device 100 is different and the lens moves in different directions, the thrust force exerted by the focus motor on the lens is also different, thereby affecting the driving voltage of the driving chip.
  • the direction of lens movement is more horizontal than the vertical direction, the thrust required to move the lens to the target position is smaller, and the driving voltage of the driver chip is smaller. In the vertical direction, the thrust required to move the lens to the target position is greater, and the driving voltage of the driver chip is greater.
  • the lens moves horizontally in the horizontal direction during the focusing process.
  • the lens moves up and down in the vertical direction during the focusing process. Due to the force of the focus motor on the lens, Movement will be affected by gravity, inertia and other factors to a certain extent.
  • the focus motor exerts less thrust when the lens moves in the horizontal direction than when the lens moves in the vertical direction. That is, it is easier for the focus motor to push the lens horizontally than vertically.
  • the corresponding target voltage may be different when the posture of the electronic device 100 is different. That is to say, when the posture of the electronic device 100 is different, the electronic device 100 may have different mapping tables of lens positions and voltages. Taking the schematic diagram of the mapping relationship between the position of the lens and the voltage as shown in Figure 5, compared to when the lens is in the vertical movement direction, when the lens is in the horizontal movement direction, the range of the lens corresponding to low voltage is wider, and the range of the lens corresponding to high voltage is wider. The lens range is narrower, or when the lens moves in the horizontal direction, the voltage of the lens position at any point in (a, d) is lower than the voltage corresponding to the lens position at that point when the lens position moves in the vertical direction.
  • the driving voltage of the driving chip may be different.
  • the posture of the electronic device 100 may refer to the angle between the lens plane and the horizontal plane.
  • the lens tends to move in the horizontal direction.
  • the driving chip of the driver chip The voltage will be smaller.
  • the electronic device 100 may first determine the attitude of the electronic device 100 before determining the target voltage according to the target position. For example, the electronic device 100 may determine the posture of the electronic device 100 through an acceleration sensor, a gyroscope sensor, or the like. After that, the mapping relationship between the lens position and the voltage is adjusted according to the posture of the electronic device 100, and the target voltage is determined based on the adjusted mapping relationship and the target position.
  • the electronic device 100 causes the driver chip to control the focus motor to move the lens to the target position under the drive of the target voltage.
  • the driver chip when the electronic device 100 controls the focus motor to move the lens through the driver chip, the driver chip, driven by the target voltage, can output a corresponding current to the focus motor according to the parameters given by the electronic device 100, such as the code value. , the focus motor generates thrust to push the lens under the action of the certain current, causing the lens to move to a certain position. Moreover, in the closed-loop working mode, the electronic device 100 can also reversely adjust the focus motor to generate the force according to the position of the lens movement. The thrust, that is, adjusting the amount of current applied to the focus motor by the driving voltage, allows the lens to move accurately and maintain it at the target position.
  • the electronic device 100 may determine whether the driving voltage of the driving chip needs to be adjusted based on whether the target voltage is the same as the driving voltage of the current driving chip. Wherein, if the target voltage is the same as the driving voltage of the current driving chip, there is no need to adjust the driving voltage of the driving chip; otherwise, the driving voltage of the driving chip needs to be adjusted to the target voltage.
  • the driving voltage of the current driving chip is the initial voltage of the driving chip when starting the camera. If the target voltage is not determined for the first time, the driving voltage of the current driving chip is The driving voltage is the target voltage determined the last time the lens was moved.
  • the electronic device 100 needs to adjust the driving voltage of the driver chip, for example, referring to FIG. voltage provided. For example, adjust the driving voltage of the driver chip from high voltage to low voltage.
  • the electronic device 100 can also change the Proportion Integration Differentiation (PID) of the driving chip according to the target voltage.
  • PID Proportion Integration Differentiation
  • This PID parameter is pre-stored in the register of the driver chip and is a parameter used by the focus motor to adjust the lens position based on the error in the lens position when the focus motor moves in the closed-loop operating mode.
  • the electronic device 100 can calculate the lens adjustment position according to the PID parameter.
  • the lens reaches There may be a certain error between the position and the ideal target position, resulting in an error in the lens position, or the lens cannot be maintained in a stable position.
  • the focus motor can be made to work in closed-loop mode during the process of pushing the lens.
  • closed-loop mode when the focus motor controls the movement of the lens, the actual position of the lens moved based on the thrust exerted by the focus motor can be used as the feedback amount to reversely adjust the thrust of the focus motor, thereby adjusting the moving position of the lens so that the lens
  • the movement is more precise.
  • the actual position of the lens movement can be obtained through a Hall sensor.
  • the driver chip can control the focus motor to reduce the thrust force to a thrust force 2 that is less than thrust force 1. Push the lens to move to the B position. If the B position does not reach the ideal target position, the driver chip can then control the focus motor to increase the thrust and push the lens with a thrust 3 greater than the thrust 2, thereby moving the lens. and maintain the target position in that ideal state.
  • the electronic device 100 can use the PID parameters to calculate and fine-tune the focus motor thrust to move the lens to the target position under the ideal state.
  • the driver chip calculates the next fine-tuning based on the actual position and the target position under the ideal state.
  • the PID parameters include: P (proportional), I (integral), and D (differential).
  • the P value is used to quickly reach the target position during the movement of the lens, and the I value is used to eliminate the difference between the target position and the actual position. Error, D value is used to suppress position oscillation.
  • this PID parameter can be used to improve the accuracy of lens movement when the driver chip controls the focus motor to move the lens, and speed up the speed of the lens moving to the target position during the autofocus process.
  • the PID parameter is related to the driving voltage of the driving chip, when the driving voltage of the driving chip needs to be adjusted, the PID parameter stored inside the driving chip also needs to be adjusted synchronously based on the target voltage.
  • the electronic device 100 may determine the PID parameter according to the target voltage and the type of the focus motor.
  • the electronic device 100 may have a pre-stored mapping table of voltage, motor type and PID parameters.
  • the electronic device 100 may use the mapping table to find the corresponding PID parameters under the current target voltage and the motor type.
  • Table 1 shows a mapping table of voltage, motor type and PID parameters.
  • the PID parameter can be determined to be PID_A1.
  • Voltage A and voltage B can respectively correspond to the aforementioned high voltage and low voltage according to the magnitude of the voltage.
  • Table 1 is only an illustrative example and does not constitute a limitation on the embodiments of the present application.
  • the mapping table may also contain more voltage values and more or less motor types, where the number of voltage values may Corresponding to the number of voltages divided by the aforementioned lens position range, for example, the lens position range is divided into three voltage levels: the first range corresponds to voltage A, the second range corresponds to voltage B, and the third range corresponds to voltage C, then the table The mapping table shown in 1 should contain the PID parameters corresponding to voltages A, B, and C respectively.
  • the electronic device 100 can also display the images collected by the camera in real time.
  • the electronic device 100 can display continuously changing clarity. Image.
  • the electronic device 100 can display clear images. The image goes from blurry to clear, clear to blurry, and finally back to a clear image.
  • the electronic device 100 determines whether to complete the adjustment of the lens position.
  • the electronic device 100 may determine whether the electronic device 100 has finished adjusting the lens position based on whether it receives an operation from the user to adjust the lens position again. Specifically, after the electronic device 100 adjusts the lens to the target position according to the lens position input by the user, if the electronic device 100 receives the lens position input by the user again, the electronic device again causes the driver chip to be in the target position according to the lens position input by the user. Driven by the driving voltage corresponding to the lens position, the focus motor is controlled to move the lens to the lens input by the user. head position to determine whether to end the adjustment of the lens position, and so on.
  • the electronic device 100 may repeatedly perform steps S103-S106 according to the multiple lens positions in sequence while receiving multiple lens positions input by the user, until the user ends the manual focusing. .
  • the electronic device 100 can determine whether to end the adjustment of the lens position based on whether the lens position corresponding to the highest image definition is found. Specifically, when the electronic device 100 finds the lens position corresponding to the highest image definition, it will end the adjustment of the lens position and complete the automatic focusing. Otherwise, the electronic device 100 will continue to adjust the lens position and make the driver chip locate at the lens position. Driven by the corresponding driving voltage, the focus motor is controlled to move the lens to the lens position until the electronic device 100 finds the lens position corresponding to the highest image definition.
  • the electronic device 100 can continuously provide a voltage (for example, the fourth driving voltage) to the driver chip, so that the driver chip can control
  • the focus motor keeps the lens at the position corresponding to the highest image definition until the electronic device 100 needs to move the lens position again, such as performing manual focus or autofocus or turning off the camera, and adjusts the lens to the starting position.
  • the fourth driving chip can be less than the driving voltage of the driving chip when the focus motor pushes the lens to the position corresponding to the highest definition.
  • the electronic device 100 can continuously adjust the position of the lens to find the lens position corresponding to the highest image definition, that is, repeat steps S103-S106 until the electronic device 100 finds the highest image definition. to the corresponding lens position to end autofocus.
  • step S103 if the electronic device 100 determines not to end the adjustment of the lens, the electronic device 100 executes step S103; otherwise, the electronic device 100 executes step S107.
  • the electronic device 100 stops adjusting the driving voltage of the driving chip.
  • the electronic device 100 can stop adjusting the driving voltage of the driving chip, so that the focusing motor maintains the current thrust applied to the lens and no longer changes the position of the lens. In this way, the electronic device 100 can continuously obtain images collected by the camera while the lens remains at the current position.
  • the electronic device 100 can also receive the user's manual focusing operation again and perform steps S103-S106 again, or the electronic device 100 can repeatedly perform steps S103-S106. , start the automatic focusing of the image, and adjust the sharpness of the image until the sharpness of the image meets the requirements.
  • the electronic device 100 can dynamically adjust the driving voltage of the driving chip according to the target position where the lens needs to move.
  • the driving voltage is lower.
  • the driving voltage is lower.
  • the driving voltage is higher. In this way, the driving voltage of the driving chip can be prevented from being kept at a high voltage, and the power consumption of the driving chip during the focusing process can be reduced as much as possible, thereby improving the power consumption of the currently working camera module and prolonging the operation time of the electronic device 100. Standby time while using the camera.
  • FIG. 6 is a schematic diagram of adjusting the aperture provided by the embodiment of the present application.
  • the reflected light from the subject passes through the lens in the camera, reaches the photosensitive chip for imaging, and is then presented as an image that the user can view on the device.
  • the adjustment of the aperture can change the aperture size of the aperture, adjust the amount of light entering the lens, and then change the display effect of the image, such as the brightness of the image, depth of field, etc.
  • the aperture of the aperture is larger, the amount of light entering is greater, the brightness of the image is higher, and the depth of field is shallower (the background is blurry); when the aperture of the aperture is smaller, the amount of light entering is smaller, the brightness of the image is lower, and the depth of field is deeper. (The background is clearer).
  • the aperture motor can be used to drive the movement of the aperture blades, thereby changing the aperture size of the aperture.
  • the voltage adjustment method provided by the embodiment of the present application can dynamically adjust the driving voltage of the driving chip of the aperture motor according to whether the aperture needs to be adjusted. Among them, when the aperture is adjusted, the driving voltage of the driving chip is larger, and when the aperture is not adjusted, the driving voltage of the driving chip is smaller.
  • FIG. 7 is a schematic flowchart of another voltage adjustment method provided by an embodiment of the present application.
  • the method includes:
  • the electronic device 100 starts the camera, the aperture in the camera is at the initial aperture value, and the driving voltage of the driving chip is at low voltage.
  • the camera of the electronic device 100 may include components such as a lens, an aperture, an aperture motor, a driver chip for the aperture motor, a photosensitive chip, and the like.
  • the driver chip of the aperture motor can drive the aperture motor and control the focus motor to move the blades in the aperture, thereby changing the size of the aperture, changing the amount of light captured on the photosensitive chip, and changing the display effect of the image collected by the camera.
  • the lens, aperture, aperture motor, driver chip of the aperture motor, and photosensitive chip please refer to the lens 193A, aperture 193B, aperture motor 193D, and The relevant contents of the driver chip 193E and the photosensitive chip 193F will not be described in detail here.
  • the aperture value is used to characterize the aperture size of the aperture, where the aperture value can be represented by F.
  • F/1.4 means that the aperture value is 1.4.
  • the larger the F number the smaller the aperture, and the smaller the F number, the larger the aperture.
  • FIG. 8 exemplarily shows the aperture value contained in the electronic device 100.
  • the electronic device 100 may include eight aperture values: F/2, F/2.8, F/4, F/5.6, F/8, F/11, F/16, and F/22.
  • the aperture size gradually decreases, where F/2 corresponds to the maximum aperture and F/22 corresponds to the minimum aperture.
  • FIG. 8 is only an illustrative example and does not constitute a limitation on the embodiments of the present application.
  • the electronic device 100 can activate the camera in the following two situations:
  • the electronic device 100 can activate the camera when activating the shooting function.
  • the electronic device 100 can activate the switched camera when switching cameras.
  • step S101 For specific details about the timing of starting the camera of the electronic device 100, please refer to the relevant content in the aforementioned step S101, and will not be described again here.
  • the aperture in the camera is at the initial aperture value, and the driving voltage of the driver chip of the aperture motor is at low voltage.
  • the initial aperture may be a preset aperture value.
  • the aperture value defaults to F2.8.
  • the low voltage may be a preset voltage, for example, 1.8V.
  • the embodiment of the present application places no limit on the initial aperture value and initial voltage.
  • the low voltage may also be called the third driving voltage.
  • the electronic device 100 collects images through the camera.
  • the image is specifically the reflected light of the subject passing through the lens in the camera, imaging on the photosensitive chip, and further processing by other components, such as ISP, including: linear correction, noise removal, point replacement repair, color interpolation, and white balance. Correction and so on, the resulting image.
  • the image collection by the electronic device 100 through the camera will continue during the process of the electronic device 100 using the camera.
  • the electronic device 100 has been collecting images through the camera after adjusting the aperture.
  • the electronic device 100 can acquire images collected by the camera before and after the aperture adjustment.
  • the electronic device 100 can display the image captured by the camera in real time in a user interface, such as a preview interface, or in a viewfinder.
  • the electronic device 100 determines the target aperture value.
  • the electronic device 100 may trigger the determination of the target aperture value in the following two situations:
  • the electronic device 100 detects the user's operation of adjusting the aperture and triggers the determination of the target aperture value.
  • the user operation may be an operation to adjust the aperture value.
  • the user operation may be an operation to act on a control that adjusts the aperture parameter in the user interface, or the user operation may also be an operation to act on the aperture value on the electronic device 100 Corresponding physical button or wheel operation.
  • the electronic device 100 may determine the target aperture value set by the user based on the user operation.
  • the electronic device 100 When starting the automatic exposure, the electronic device 100 triggers the determination of the target aperture value.
  • Automatic exposure means that the electronic device 100 automatically adjusts the exposure parameters when the camera collects images, so that the image reaches a reasonable grayscale range, that is, the brightness of the image is equal to the threshold, to avoid overexposure or underexposure of the image.
  • the reasonable grayscale range may refer to an intermediate grayscale value of 18%.
  • the exposure parameters include: aperture value, shutter speed and brightness gain.
  • the electronic device 100 can adjust the exposure parameters through a table lookup method, an iterative method, a numerical statistical method, or other methods. For example, when the electronic device 100 adjusts the exposure parameters through a look-up table method, the electronic device 100 can pre-store a look-up table of exposure parameters and image brightness, and the electronic device 100 can find appropriate exposure parameters according to the brightness of the current image, and then obtain Target aperture value, where the brightness of the image captured by the camera under the appropriate exposure parameters is equal to the threshold value. It should be understood that the embodiment of the present application does not limit the method of determining the target aperture value during the automatic exposure process.
  • the electronic device 100 can determine the target aperture value according to the brightness of the current image. Specifically, when the brightness of the current image is less than the threshold, you need to increase the aperture, that is, reduce the aperture value based on the initial aperture value, and increase the amount of light so that the image brightness is equal to the threshold. At this time, the target aperture value is smaller than the initial aperture value. Aperture value. When the brightness of the current image is greater than the threshold, you need to reduce the aperture, that is, increase the aperture value based on the initial aperture value, and reduce the amount of light entering, so that the brightness of the image is equal to the threshold. At this time, the target aperture value is greater than the initial aperture value. .
  • the brightness of the image refers to the brightness of the screen.
  • the electronic device 100 can determine the brightness of the image by calculating the average value of the brightness of the image in each channel, or convert the image into a grayscale image and use the average pixel value as the brightness of the image. It should be understood that the embodiment of the present application does not limit the method of calculating the brightness of the image.
  • the electronic device 100 may trigger automatic exposure when the shooting function is just started, or the electronic device 100 may detect When the illumination of the surrounding environment changes, automatic exposure is triggered, or the electronic device 100 can trigger automatic exposure when switching cameras, and so on.
  • the embodiment of the present application does not limit the timing when the electronic device 100 triggers automatic exposure.
  • the solution of the present application can also adjust the shutter speed and brightness gain during the actual automatic exposure process.
  • the electronic device 100 when calculating exposure parameters, in addition to determining the aperture value based on the brightness of the image, the electronic device 100 also calculates the shutter speed and brightness gain, and while adjusting the aperture size, the electronic device 100 also calculates the shutter speed and brightness gain based on the calculated shutter speed and brightness. Gain, adjust shutter speed and brightness gain so that the brightness of the image is equal to the threshold.
  • the target aperture value may also be referred to as the first value.
  • the electronic device 100 determines the working mode of the aperture motor according to the target aperture value.
  • the aperture motor works in open-loop mode. Specifically, when the electronic device 100 determines that the target aperture value is the maximum value or the minimum value, the electronic device 100 determines the working mode of the aperture motor as the open-loop mode, so that the aperture motor adjusts the aperture to the maximum aperture or the minimum value in the open-loop mode. aperture.
  • the aperture motor needs to generate a certain thrust to push the blades of the aperture based on a given current, so that the aperture can be adjusted to the maximum aperture or the minimum aperture.
  • the aperture motor works in closed-loop mode. Specifically, when the electronic device 100 determines that the target aperture value is between the maximum value and the minimum value, the electronic device 100 determines the working mode of the aperture motor as the closed-loop mode, so that the aperture motor adjusts the aperture value of the aperture to Target aperture value.
  • the driver chip can use the position of the aperture motor pushing the aperture blades as feedback, and reversely adjust the thrust of the aperture motor to push the aperture blades more accurately to the target position corresponding to the target aperture value. For example, when the aperture motor pushes the aperture blades under the action of thrust 1, causing the aperture blades to move beyond the target position, then reduce the thrust of the aperture motor and push the aperture blades with a thrust less than thrust 1, so that the aperture blades approach or move to At this target position, when the aperture motor pushes the aperture blade under the action of thrust force 2, so that the moving position of the aperture blade does not reach the target position, then the thrust of the aperture motor is increased, so that the aperture motor pushes the aperture blade with a thrust greater than thrust force 2, in sequence By analogy, the aperture blades are brought to and held at this target position.
  • the aperture motor needs to push the aperture blades to the target position based on the given target position of the aperture blades under the dynamically changing current provided by the driver chip, so that the aperture value can be adjusted to the target aperture value.
  • the target position of the aperture blade may also refer to the motor stroke of the aperture motor, and the embodiment of the present application does not limit this name.
  • the target aperture value determines the working mode of the aperture motor. Specifically, when the target aperture value is the maximum value or the minimum value of the aperture, the electronic device 100 determines that the working mode of the aperture motor is the open-loop mode. Otherwise, the aperture motor The working mode is closed loop mode.
  • the aperture motor can also only include a closed-loop working mode.
  • the aperture motor changes the aperture size of the aperture in the closed-loop working mode, so that the aperture value is adjusted to the target aperture value, or the aperture
  • the motor may also only include an open-loop working mode.
  • the aperture motor changes the aperture size of the aperture in the open-loop working mode, so that the aperture value is adjusted to the target aperture value.
  • the embodiments of the present application do not limit the working mode of the aperture motor and the size of the target aperture value for aperture adjustment in different working modes.
  • the electronic device 100 determines whether the working mode is an open-loop mode.
  • the electronic device 100 executes step S206; otherwise, the electronic device 100 executes step S210.
  • step S204 and step S205 are optional steps.
  • the electronic device 100 may directly perform step S206 after performing step S203; or, when the aperture in the electronic device 100 only includes the closed-loop mode, the electronic device 100 may After executing step S203, step S210 is directly executed; or, when the aperture in the electronic device 100 includes two working modes: open loop and closed loop, then the electronic device 100, after executing step S203, will also execute step S204 to determine the aperture.
  • the working mode of the aperture is selected, and steps S206-S209 or steps S210-S213 are selected to be executed according to the working mode of the aperture.
  • the electronic device 100 determines the current of the aperture motor at high voltage and low voltage respectively according to the target aperture value.
  • the currents under high voltage and low voltage are the currents delivered to the aperture motor by the driver chip under the driving of high voltage and low voltage respectively.
  • the current under the high voltage can cause the aperture motor to move the aperture blade to a certain position, and the current under the low voltage can keep the aperture blade at that position.
  • the focus motor can generate a certain thrust to push the aperture blades to a certain position based on the current provided by the driver chip, so that the aperture value of the aperture is adjusted to the corresponding aperture value under the current. Furthermore, after the aperture blades reach a certain position, due to the influence of friction, the focus motor can provide a smaller thrust, so that the aperture blades can still remain at the currently reached position, ensuring that the aperture value remains unchanged.
  • the driver chip can reduce the current provided to the focus motor. It can be seen that the driver chip reduces the current provided to the focus motor, thus reducing the current of the driver chip itself and further reducing the power consumption of the driver chip.
  • the electronic device can also simultaneously adjust the current provided by the driver chip to the aperture motor from the current under the high voltage to the current under the low voltage.
  • the electronic device 100 may pre-store a mapping table of the aperture value, the voltage of the driving chip, and the current of the aperture motor.
  • the mapping table indicates the corresponding current of the aperture motor under different aperture values and different voltages of the driving chip.
  • Table 2 shows a mapping table of aperture value, voltage and current of the driving chip.
  • the current and voltage in Table 2 are the current of the aperture motor and the voltage of the driver chip when driving the aperture blade to move.
  • the driver chip driven by a certain voltage, inputs a certain current to the aperture motor, which can cause the aperture motor to move toward the aperture.
  • the blades exert a certain thrust to move the aperture blades to a certain position, so that the aperture value reaches a corresponding value.
  • the driver chip driven by voltage A, provides a current of I A1 to the aperture motor, which can adjust the aperture value of the aperture to F1.
  • voltage A and voltage B can respectively represent high voltage and low voltage according to the magnitude of their voltages, and are used to respectively represent the voltages of the driver chip when the aperture is adjusted and when the aperture is not adjusted. It can be seen from Table 2 that after the target aperture value is determined, the current at high voltage and the current at low voltage corresponding to the target aperture value can be found.
  • mapping table of the aperture value, the voltage of the driver chip and the current of the aperture motor can be used by developers in advance to test the driver chip by keeping the position of the aperture blade unchanged after adjusting the aperture to a certain aperture value.
  • the current delivered to the aperture motor is driven by different voltages.
  • the focus motor adjusts the aperture to a certain value, and the current required by the focus motor is the maximum current that the driver chip can provide when driven by a certain voltage, the electronic device 100 does not need to store the aperture. value, the current corresponding to this voltage. Then, when the actual driver chip is driven by a certain voltage, it can provide the maximum current that can be provided at that voltage to the aperture motor by default.
  • the current can be represented as a code value that can be recognized by the driver chip. Different code values are used to correspond to different current sizes.
  • the electronic device 100 can determine the code values at high voltage and low voltage according to the target aperture value.
  • the driver chip can determine the amount of current delivered to the aperture motor based on the code value.
  • the specific description of the code value is similar to the parameter code value used by the electronic device 100 to determine the target position of the lens mentioned in step S103, and may be referenced accordingly, and will not be described again here.
  • the electronic device 100 may also determine the current at low voltage and only determine the current at high voltage.
  • the driver chip may adjust the voltage of the driver chip to low voltage after the aperture adjustment is completed. By default, it provides the maximum current that the driver chip can provide to the aperture motor under low voltage, so that the aperture motor can maintain the position of the aperture blades unchanged under the action of the maximum current.
  • the current under high voltage may also be called a third current
  • the current under low voltage may also be called a fourth current
  • the electronic device 100 adjusts the driving voltage of the driving chip to a high voltage.
  • the driver chip Before adjusting the size of the aperture, first adjust the driving voltage of the driver chip of the aperture motor to a high voltage. Before driving the aperture motor, the driver chip can transmit the instruction information to increase the voltage to the power management module, and the power management module increases the voltage provided to the driver chip.
  • the power management module can switch the voltage pin connected to the driver chip 2 from a low voltage pin to a high voltage pin, so that the voltage provided by the power management module to the driver chip 2 is adjusted from a low voltage to a high voltage pin. high voltage.
  • the value of the high voltage is different.
  • the high voltage is the first voltage
  • the target aperture value is the second value
  • the high voltage is the second voltage
  • the electronic device 100 can dynamically adjust the driving voltage of the driver chip when adjusting the aperture according to the thrust applied by adjusting the aperture. For example, when the aperture value is smaller and the thrust applied is smaller, the aperture is adjusted. The lower the driving voltage of the driver chip at that time.
  • the driver chip uses the same high voltage as the driving voltage every time the aperture is adjusted, which can save the time of determining the driving voltage of the driver chip based on the aperture value before adjusting the aperture, and speed up the aperture. The speed of adjustment. Then, in this case, the high voltage needs to ensure that when adjusting the aperture of the electronic device 100 to any aperture value, the current provided by the driver chip to the aperture motor can meet the sufficient current required by the aperture motor during the adjustment process. size thrust.
  • the focus motor is a central motor and the focus motor exerts the greatest thrust when adjusting the aperture to the maximum aperture or minimum aperture
  • the maximum current that the driver chip can provide to the aperture motor under this high voltage should ensure that the aperture motor can Adjust aperture to maximum aperture or minimum aperture.
  • the high voltage may also be called the first driving voltage.
  • the electronic device 100 causes the driver chip to drive the high-voltage current to the aperture motor, and controls the aperture motor to adjust the aperture value of the aperture to the target aperture value.
  • the aperture motor can generate a certain thrust (such as a first thrust) to push the position of the aperture blades, so that the aperture blades reach a certain position, so that the aperture value of the aperture is adjusted to the target aperture value.
  • a certain thrust such as a first thrust
  • the electronic device 100 adjusts the driving voltage of the driving chip to a low voltage, and adjusts the current delivered by the driving chip to the aperture motor to a current at a low voltage.
  • the current provided by the driving chip to the aperture motor can enable the aperture motor to apply thrust (for example, the second thrust) to the aperture blade to ensure that the position of the aperture blade remains unchanged.
  • the electronic device 100 can adjust the driving voltage of the driving chip back to a low voltage to reduce the power consumption of the driving chip. Furthermore, the driver chip can also adjust the current of the aperture motor to the current at the low voltage, so that the aperture motor can further reduce the power of the driver chip while maintaining the position of the aperture blades under the action of the current. Consumption.
  • the electronic device 100 can also only adjust the driving voltage of the driving chip to a low voltage.
  • the driving chip can provide the maximum current that the driving chip can provide under the low voltage to the aperture motor by default. .
  • the low voltage here may also be called the second driving voltage.
  • the electronic device 100 determines the target position of the aperture blade according to the target aperture value.
  • the electronic device 100 can adjust the thrust applied by the focus motor to the aperture blades according to the moving position of the aperture blades, so that the aperture blades can move and remain at the target position corresponding to the target size.
  • the electronic device 100 may pre-store a mapping table of the aperture value and the position of the aperture blade, and the mapping table indicates the corresponding relationship between the aperture value and the position of the aperture blade.
  • the electronic device 100 determines the target position of the aperture blade, the electronic device 100 can determine the target position of the aperture blade corresponding to the target aperture value through the mapping table.
  • the mapping table can be obtained by developers by testing the position of the aperture blades at different aperture values.
  • the aperture aperture size can be made to be at the target size (eg, the first size).
  • determining the target position of the aperture blades based on the target aperture value is equivalent to determining the target size of the aperture aperture.
  • controlling the movement of the aperture blades to the target position is equivalent to controlling the aperture aperture to be adjusted to the target size.
  • the position of the aperture blades and the size of the aperture aperture can be replaced equally, which will not be described in detail below.
  • the electronic device 100 adjusts the driving voltage of the driving chip to a high voltage.
  • step S207 Similar to step S207, before adjusting the size of the aperture, the driving voltage of the driving chip of the aperture motor is adjusted to a high voltage.
  • the driving voltage of the driving chip of the aperture motor is adjusted to a high voltage.
  • the electronic device 100 causes the driver chip to control the aperture motor to move the aperture blades to the target position under the driving of high voltage, so that the aperture value of the aperture is adjusted to the target aperture value.
  • the drive chip outputs current to the aperture motor.
  • the aperture motor generates thrust under the action of the current to push the aperture blades.
  • the drive chip adjusts the current output to the aperture motor according to the position of the aperture blade movement, thereby adjusting the movement of the aperture blades. position until the aperture blades move to the target position so that the aperture value of the aperture is adjusted to the target aperture value.
  • the driver chip can provide one or more currents to the aperture motor to drive the aperture motor to move the aperture to the target position so that the aperture value of the aperture is adjusted to the target aperture value.
  • the driver chip provides multiple currents to control the thrust exerted by the aperture motor, one of the currents is determined by the driver chip based on the adjustment effect of the aperture motor on the aperture when it was previously provided to the aperture motor.
  • the electronic device 100 adjusts the driving voltage of the driving chip to a low voltage.
  • the electronic device 100 can adjust the driving voltage of the driving chip to a low voltage to reduce the power consumption of the driving chip.
  • the current provided by the driving chip to the aperture motor can cause the aperture motor to apply thrust to the aperture blade to ensure that the position of the aperture blade remains unchanged.
  • the electronic device 100 can reversely adjust the thrust of the aperture motor according to the moving position of the aperture blades to ensure that the position of the aperture blades remains unchanged, therefore, the electronic device 100 adjusts the driving voltage of the driving chip to low Even if the voltage of the driver chip changes, the current that the driver chip can provide to the aperture motor changes.
  • the driver chip can also dynamically adjust the current provided to the aperture motor according to the position of the aperture blade. That is, the driver chip provides one or more A current is supplied to the aperture motor, so that the thrust exerted by the aperture motor on the aperture blades under the action of the current can still keep the position of the aperture blades unchanged.
  • the electronic device 100 Since the electronic device 100 is always in a state of collecting images through the camera after the camera is started, after the aperture is adjusted, the electronic device 100 can obtain the image collected by the camera after the aperture is adjusted. In addition, since the electronic device 100 can display the image collected by the camera in real time, during the process of adjusting the aperture, the electronic device 100 can display the display effect of the image, such as an image in which the brightness and depth of field change with the change of the aperture.
  • the image captured by the camera after the aperture is adjusted is the image corresponding to the aperture value set by the user.
  • the user can see that the brightness or depth of field follows the user's adjustment of the aperture during the aperture adjustment process. And the image changes.
  • the image captured by the camera after the aperture is adjusted is an image with a brightness equal to the threshold.
  • the image is neither too dark nor too bright, and truly restores the color and illumination of the scene observed by the human eye. Users can An image in which the brightness of the image changes automatically is viewed through the electronic device 100 .
  • the electronic device 100 can dynamically adjust the voltage of the driver chip of the aperture motor according to whether the aperture is adjusted.
  • the voltage of the driver chip is reduced. Only when the aperture is adjusted, the voltage of the driver chip is increased. High voltage of the driver chip. In this way, the driving voltage of the driver chip can be prevented from maintaining a high voltage, and the power consumption of the driver chip during the automatic exposure process can be reduced as much as possible, thereby improving the power consumption of the currently working camera module and extending the The standby time of the electronic device 100 when using the camera is determined.
  • each step in the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the method steps disclosed in conjunction with the embodiments of this application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • This application also provides an electronic device, which may include a memory and a processor.
  • the memory can be used to store computer programs; the processor can be used to call the computer program in the memory, so that the electronic device executes the method executed by the electronic device 100 in any of the above embodiments.
  • the present application also provides a chip system, which includes at least one processor for implementing the functions involved in the method performed by the electronic device 100 in any of the above embodiments.
  • the chip system further includes a memory, the memory is used to store program instructions and data, and the memory is located within the processor or outside the processor.
  • the chip system can be composed of chips or include chips and other discrete devices.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented in hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor implemented by reading software code stored in memory.
  • the memory may be integrated with the processor or may be provided separately from the processor, which is not limited by the embodiments of the present application.
  • the memory may be a non-transient processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be separately provided on different chips.
  • the embodiments of this application vary on the type of memory, and The arrangement of the memory and processor is not specifically limited.
  • the chip system can be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC). It can also be a central processor (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit (MCU), or a programmable logic device (PLD) or other integrated chip.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processing circuit
  • MCU microcontroller
  • PLD programmable logic device
  • the computer program product includes: a computer program (which can also be called a code, or an instruction).
  • a computer program which can also be called a code, or an instruction.
  • the computer program When the computer program is run, it causes the computer to execute the electronic device in any of the above embodiments. 100 any method of execution.
  • This application also provides a computer-readable storage medium that stores a computer program (which may also be called a code, or an instruction).
  • a computer program which may also be called a code, or an instruction.
  • the computer program When the computer program is run, the computer is caused to perform the method performed by any one of the electronic devices 100 in any of the above embodiments.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (AP 800plication specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.
  • the steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the embodiment of the present application also provides a device.
  • the device may specifically be a component or module, and the device may include one or more connected processors and memories. Among them, memory is used to store computer programs. When the computer program is executed by one or more processors, the device is caused to execute the methods in each of the above method embodiments.
  • the devices, computer-readable storage media, computer program products or chips provided by the embodiments of the present application are all used to execute the corresponding methods provided above. Therefore, the beneficial effects it can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be described again here.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated.
  • the available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, DVD), or semiconductor media (eg, solid state disk (SSD)), etc.

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Abstract

本申请公开了电压调整方法及相关装置，该方法用于调整摄像头模组中的驱动芯片的电压，对于控制镜头移动的驱动芯片，可以根据镜头移动到目标位置所需的推力，调整驱动芯片的驱动电压，避免控制镜头移动的驱动芯片一直处于高电压；或者，对于控制光圈大小变化的驱动芯片，可以根据光圈大小是否改变，调整驱动芯片的驱动电压，避免控制光圈大小变化的驱动芯片一直处于高电压。这样，可以降低当前拍摄中使用的摄像头模组的功耗。

Description

电压调整方法及相关装置
本申请要求于2022年09月06日提交中国专利局、申请号为202211083452.1、申请名称为“电压调整方法及相关装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及终端领域，尤其涉及电压调整方法及相关装置。
背景技术
摄像头模组作为终端设备(例如手机)中功耗最高的模块之一，如何降低摄像头模组的功耗是开发人员的研究重点。
目前，终端设备中一般都包括多个摄像头模组，例如长焦摄像头模组、广角摄像头模组、超广角摄像头模组等等。为了降低摄像头模组的功耗，一种方法是，可以根据用户选择的拍摄模式，将该拍摄模式下会使用到的摄像头模组切换到工作模式，将其他摄像头模组的工作模式切换到低功耗模式，尽可能的减少其他摄像头模组的功耗。例如，当用户选择广角拍摄模式时，则让广角摄像头模组切换到工作模式，在用户界面中显示广角摄像头采集的图像，将其他摄像头模组切换到低功耗模式。
但是，该方法只能降低其他与当前拍摄过程无关的摄像头模组所消耗的功率，对当前拍摄过程中正在使用的摄像头模组的功耗并没有任何的改善。因此，如何降低当前拍摄过程中所使用的摄像头模组的功耗，是目前亟待解决的问题。
发明内容
本申请提供了电压调整方法及相关装置，实现了动态调整摄像头中的驱动芯片的驱动电压，降低了摄像头的功耗。
本申请实施例提供了一种电压调整方法，该方法应用于包括摄像头的电子设备，摄像头包括镜头、马达和驱动芯片，该方法包括：电子设备启动摄像头，并通过摄像头采集图像；电子设备提供第一驱动电压给驱动芯片，以驱动马达将镜头移动到第一位置；电子设备提供第二驱动电压给驱动芯片，以驱动马达将镜头移动到第二位置；第二驱动电压不同于第一驱动电压，第二位置不同于第一位置。
实施第一方面提供的方法，电子设备可以在使用摄像头采集图像的过程中，根据镜头移动的位置动态调整驱动芯片的驱动电压，避免驱动芯片一直处于高电压的状态，降低驱动芯片的功耗，进而降低拍摄过程中使用的摄像头的功耗。
结合第一方面，在一些实施方式中，第二驱动电压大于第一驱动电压，第二位置和第三位置之间的距离，大于，第一位置和第三位置之间的距离；第三位置为马达未移动镜头时，镜头所处的位置。
其中，第二位置或第三位置距离第一位置越远，马达需要施加的推力越大，则驱动芯片所需的驱动电压越大。
也就是说，镜头移动的位置距离初始位置越近，驱动芯片的驱动电压越小。那么，当镜头移动的距离较近时，可以降低驱动芯片的驱动电压，避免镜头在移动的距离较近时，仍给驱动芯片施加高电压，从而实现驱动芯片能够将镜头移动到指定位置的前提下，又能降低驱动芯片的功耗。
结合第一方面，在一些实施方式中，该方法还包括：电子设备提供第三驱动电压给驱动芯片，以驱动马达将镜头移动到第一位置；其中，电子设备提供第三驱动电压时的姿态，不同于，电子设备提供第一驱动电压时的姿态；第三驱动电压不同于第一驱动电压。
由于重力、惯性等因素的影响，当电子设备的姿态不同时，马达将镜头移动到同一位置所需要施加的推力不同。因此，电子设备在控制镜头移动到指定位置时，进一步结合电子设备的姿态来确定需要施加给驱动芯片的电压，从而使电子设备能够在处于马达比较容易推动镜头的姿态时，能够进一步降低驱动芯片的电压，进一步地降低驱动芯片的功耗，从而尽可能的降低工作过程中的摄像头的功耗。
结合第一方面，在一些实施方式中，电子设备的姿态是指镜头的平面与水平面的夹角，电子设备提供第三驱动电压时，镜头的平面与水平面的夹角处于第一夹角，电子设备提供第一驱动电压时，镜头的平面与水平面处于第二夹角；第一夹角小于第二夹角，第三驱动电压大于第一驱动电压。
由于马达在水平方向上移动镜头，比马达在垂直方向移动镜头更容易，那么可以根据电子设备的姿态，即镜头与水平面的夹角，来表征马达在何种方向上移动镜头，进而确定驱动芯片的驱动电压。其中，当镜头的平面与水平面的夹角越大时，即镜头平面更偏向垂直于水平面，马达更接近在水平方向上移动镜头，当镜头需要移动到同一位置时，驱动芯片所需的电压越小。
结合第一方面，在一些实施方式中，摄像头在镜头位于第二位置时所采集的图像的清晰度，高于，摄像头在镜头位于第二位置以外的其他位置时所采集的图像的清晰度；电子设备提供第二驱动电压给驱动芯片，以驱动马达将镜头移动到第二位置之后，方法还包括：电子设备持续提供第四驱动电压给驱动芯片，以驱动马达将镜头保持在第二位置。
也就是说，电子设备可以在自动对焦的过程中移动镜头的位置，调整摄像头采集的图像的清晰度，并根据镜头移动的位置调整驱动芯片的电压，直到图像的清晰度达到最高，电子设备结束自动对焦，并将镜头保持在当前清晰度最高时对应的位置。这样，可以降低自动对焦过程中摄像头的功耗。
结合第一方面，在一些实施方式中，第一位置和第二位置为根据用户输入的调整镜头的位置的操作确定。
也就是说，电子设备可以在手动对焦的过程中移动镜头的位置，基于用户输入的操作，确定镜头的位置，进而根据该位置调整驱动芯片的电压。这样，可以降低手动对焦过程中摄像头的功耗。
结合第一方面，在一些实施方式中，电子设备提供第一驱动电压给驱动芯片，以驱动马达将镜头移动到第一位置；电子设备提供第二驱动电压给驱动芯片，以驱动马达将镜头移动到第二位置，具体包括：电子设备提供第一驱动电压给驱动芯片，并通过驱动芯片根据第一比例积分微分PID参数提供第一电流给马达，以驱动马达将镜头移动到第一位置；电子设备提供第二驱动电压给驱动芯片，并通过驱动芯片根据第二比例积分微分PID参数提供第二电流给马达，以驱动马达将镜头移动到第二位置。
其中，比例积分微分PID参数可用于在驱动芯片控制马达移动镜头的过程中，提高镜头移动的精度，加快对焦过程中，镜头移动到目标位置的速度。那么，在驱动芯片的电压需要调整时，电子设备可以通过更新该PID参数，保证镜头移动的精度。
结合第一方面，在一些实施方式中，电子设备预存有第一比例积分微分PID参数和第二比例积分微分PID参数。
结合第一方面，在一些实施方式中，电子设备通过摄像头采集图像之后，该方法还包括：电子设备显示通过摄像头采集的图像，其中，电子设备在镜头处于第一位置时采集的图像和镜头处于第二位置时采集的图像的清晰度不同。
也就是说，在电子设备调整镜头位置的过程中，用户可以通过电子设备的显示屏，查看到摄像头采集的清晰度跟随镜头位置的改变而动态变化的图像。
结合第一方面，在一些实施方式中，该方法还包括：电子设备在启动摄像头时，提供第四驱动电压给驱动芯片，以驱动马达将镜头移动到第四位置；第四驱动电压为预设电压。
初始地，在电子设备启动摄像头时，电子设备可以提供一个预设电压给驱动芯片，使得马达能够将该镜头快速移动到一个初始位置，快速启动摄像头的对焦。
结合第一方面，在一些实施方式中，预设电压为高电压。示例性地，该高电压可以是指电压值大于某一阈值的电压。
为了避免驱动芯片的电压过低时，该驱动芯片无法驱动马达将镜头移动到初始位置，电子设备在启动摄像头时，可以默认提供一个高电压给驱动芯片。
第二方面，本申请实施例提供了一种电压调整方法，该方法应用于包括摄像头的电子设备，摄像头包括光圈、马达和驱动芯片，该方法包括：电子设备启动摄像头，并通过摄像头采集图像；电子设备提供第一驱动电压给驱动芯片，以驱动马达改变光圈的孔径大小，使得光圈的光圈值调整为第一值；电子设备将第一驱动电压调整为第二驱动电压；第一驱动电压大于第二驱动电压。
实施第二方面提供的方法，电子设备可以在调整光圈时，给驱动芯片提供高电压，在光圈调整结束后，给驱动芯片提供低电压，这样，可以避免驱动芯片一直处于高电压，降低驱动芯片的功耗，进而降低拍摄过程中使用的摄像头的功耗。
结合第二方面，在一些实施方式中，电子设备提供第一驱动电压给驱动芯片，具体包括：电子设备将提供给驱动芯片的电压由第三驱动电压调整为第一驱动电压，第三驱动电压小于第一驱动电压。
在电子设备调整光圈之前，电子设备也可以给驱动芯片提供低电压。也就是说，只有在光圈调整的过程中，驱动芯片才处于高电压，从而达到根据光圈调整与否，动态调整驱动芯片的电压的目的。
结合第二方面，在一些实施方式中，第三驱动电压等于第二驱动电压。
也就是说，驱动芯片总共有两个电压，一个电压较高，一个电压较低，在调整光圈时，驱动芯片的驱动电压为该较高的电压，在没有调整光圈时，驱动芯片的驱动芯片为该较低的电压。
结合第二方面，在一些实施方式中，电子设备提供第一驱动电压给驱动芯片，以驱动马达改变光圈的孔径大小，使得光圈的光圈值调整为第一值，具体包括：电子设备提供第一驱动电压给驱动芯片，并通过驱动芯片提供一个或多个电流给马达，以驱动马达将光圈的孔径大小调整为第一大小，使得光圈的光圈值调整为第一值；其中，多个电流包括第一电流和第二电流，第二电流为根据马达在第一电流的作用下调整的光圈的孔径大小确定。
在光圈调整过程中，驱动芯片可以基于光圈叶片移动的位置反向调整马达施加给光圈叶片的推力，使光圈的孔径大小调整为该光圈值对应的更加精准的大小。
结合第二方面，在一些实施方式中，电子设备将第一驱动电压调整为第二驱动电压之后，方法还包括：电子设备通过驱动芯片提供一个或多个电流给马达，以驱动马达将光圈的孔径大小保持为第一大小。
在光圈调整结束后，电子设备将驱动芯片的电压由高电压调整为低电压时，驱动芯片可以动态调整马达的推力，使光圈的孔径大小保持不变，从而避免驱动芯片的电压改变造成光圈的抖动，影响摄像头的出图效果。
结合第二方面，在一些实施方式中，第一值为光圈除最大光圈值和最小光圈值之外的光圈值。
也就是说，当光圈需要调整到除最大光圈和最小光圈之外的光圈时，可以采用上述驱动芯片根据光圈叶片一定的位置反向调整马达的推力的方式调整光圈，使光圈的调整更加精准。
结合第二方面，在一些实施方式中，电子设备提供第一驱动电压给驱动芯片，以驱动马达改变光圈的孔径大小，使得光圈的光圈值调整为第一值，具体包括：电子设备提供第一驱动电压给驱动芯片，并通过驱动芯片提供第三电流给马达，使马达产生第一推力改变光圈孔径大小，使得光圈的光圈值调整为第一值。
在光圈调整过程中，驱动芯片也可以不基于光圈叶片移动的位置反向调整马达施加的推力，驱动芯片可以仅提供一个固定的电流给马达，以使得马达在该电流的作用下产生推力调整光圈的孔径大小，从而快速完成光圈的调整。
结合第二方面，在一些实施方式中，电子设备将第一驱动电压调整为第二驱动电压之后，该方法还包括：电子设备提供第二电压给驱动芯片，并通过驱动芯片提供第四电流给马达，使马达在第二推力的作用下，保持光圈孔径大小的改变。
其中，第四电流可以小于驱动芯片在第二电压的驱动所能提供给马达的最大电流。这样，可以进一步降低驱动芯片的功耗，改善当前拍摄过程中所使用的摄像头的功耗。
结合第二方面，在一些实施方式中，第一值为光圈的最大光圈值或最小光圈值。
也就是说，但光圈需要调整到最大光圈或最小光圈时，可以采用上述驱动芯片仅提供一个固定电流给马达的方式调整光圈。
结合第二方面，在一些实施方式中，电子设备预存有第三电流和/或第四电流。
结合第二方面，在一些实施方式中，第一值为电子设备采集的图像的亮度等于阈值时，光圈的光圈值。
电子设备可以调整光圈大小，使摄像头采集的图像的亮度达到阈值，使图像的亮度既不会太亮也不会太暗。也就是说，电子设备可以在自动曝光的过程中根据光圈的调整，动态改变驱动芯片的电压，从而降低摄像头在自动曝光过程中的功耗。
结合第二方面，在一些实施方式中，该方法还包括：电子设备检测到第二操作，第二操作用于指示第一值。
也就是说，电子设备可以在用户手动调整光圈的过程中，根据光圈的调整，动态改变驱动芯片的电压，从而降低用户手动调整光圈的过程中，摄像头产生的功耗。
结合第二方面，在一些实施方式中，电子设备通过摄像头采集图像之后，该方法还包括：电子设备显示通过摄像头采集的图像，其中，电子设备在将光圈值调整为第一值之前和调整为第一值之后，采集的图像的亮度和/或景深不同。
也就是说，电子设备可以在光圈调整过程中，显示图像的亮度和/或景深跟随光圈的调整而发生变化的图像。
第三方面，本申请实施例提供了一种电子设备，包括摄像头，存储器，一个或多个处理器，以及一个或多个程序，其中，摄像头包括镜头、马达、驱动芯片；一个或多个处理器在执行一个或多个程序时，使得电子设备实现如第一方面或第一方面中的任意一种实施方式所描述的方法。
第四方面，本申请实施例提供了一种电子设备，包括摄像头，存储器，一个或多个处理器，以及一个或多个程序，其中，摄像头包括光圈、马达、驱动芯片；一个或多个处理器在执行一个或多个程序时，使得电子设备实现如第一方面或第一方面中的任意一种实施方式所描述的方法。
第五方面，本申请实施例提供了一种计算机可读存储介质，包括指令，当指令在电子设备上运行时，使得电子设备执行如第一方面或第一方面中的任意一种实施方式，第二方面或第二方面中的任意一种实施方式所描述的方法。
第六方面，本申请实施例提供了一种计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行如第一方面或第一方面中的任意一种实施方式，第二方面或第二方面中的任意一种实施方式所描述的方法。
本申请实施例提供的电压调整方法，能够调整摄像头中的驱动芯片的电压，对于控制镜头移动的驱动芯片，可以根据镜头移动到目标位置所需的推力，动态调整驱动芯片的驱动电压，避免控制镜头移动的驱动芯片一直处于高电压；或者，对于控制光圈大小改变的驱动芯片，可以根据光圈的改变与否，调整驱动芯片的驱动电压，避免控制光圈改变的驱动芯片一直处于高电压。这样，可以降低当前拍摄过程中使用的摄像头的功耗，延长电子设备在使用摄像头过程中的待机时间。
附图说明
图1A为本申请实施例提供的电子设备100的硬件结构示意图；
图1B为本申请实施例提供的电子设备100的软件结构框图；
图2为本申请实施例提供的电压调整装置的结构示意图；
图3为本申请实施例提供的对焦涉及到的示意图；
图4为本申请实施例提供的一种电压调整方法的流程示意图；
图5为本申请实施例提供的镜头的位置与电压的映射关系示意图；
图6为本申请实施例提供的调整光圈时涉及到的示意图；
图7为本申请实施例提供的另一种电压调整方法的流程示意图；
图8为本申请实施例提供的电子设备100中包含的光圈值。
具体实施方式
下面将结合附图对本申请实施例中的技术方案进行清楚、详尽地描述。其中，在本申请实施例的描述中，除非另有说明，“/”表示或的意思，例如，A/B可以表示A或B；文本中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，另外，在本申请实施例的描述中，“多个”是指两个或多于两个。
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为暗示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征，在本申请实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
摄像头模组由多个组件组成，例如，一个摄像头模组可以包括：镜头、光圈、马达、感光芯片、驱动芯片等等组件。虽然从整体来看，在拍摄过程中摄像头模组是处于工作状态的，但实际摄像头模组中的部分组件可能并不需要时时处于工作状态。
例如，马达可用于驱动镜头的移动，调整设备显示的图像的清晰度，实现拍摄过程中的对焦，如果马达仅需要较小的推力推动镜头或无需推动镜片时，可以降低控制马达的驱动芯片的驱动电压，从而降低该驱动芯片的功耗，实现对拍摄过程中使用到的摄像头模组的功耗的改善。为了便于描述，以下将推动镜头移动的马达称为对焦马达。
又例如，光圈可用于改变进光量，通过马达调整光圈大小，可以调整设备显示的图像的亮度或景深，如果光圈不需要调节，则可以降低控制马达的驱动芯片的驱动电压，降低该驱动芯片的功耗，实现对拍摄过程中使用到的摄像头模组的功耗的改善。为了便于描述，以下将推动光圈叶片移动的马达称为光圈马达。
本申请实施例提供了一种电压调整方法，该电压调整方法可用于根据镜头移动的位置，动态调整控制对焦马达的驱动芯片的驱动电压。具体实现中，在启动摄像头之后，通过摄像头采集图像，在对焦过程中， 获取镜头的目标位置，并根据该目标位置确定驱动芯片的驱动电压，进而使得驱动芯片在该驱动电压的驱动下，控制对焦马达推动镜头到达目标位置，调整图像的清晰度。
其中，当镜头移动到目标位置需要的推力较小时，驱动电压较小，当镜头移动到目标位置需要的推力较大时，驱动电压较大。这样，根据镜片移动的位置动态调整驱动芯片的驱动电压的大小，可以避免驱动芯片的驱动电压一直处于高电压，改善了摄像头模组工作过程中的功耗。
另外，本申请实施例还提供了一种电压调整方法，该电压调整方法可用于根据光圈大小的改变与否，动态调整控制光圈马达的驱动芯片的驱动电压。具体实现中，在启动摄像头之后，通过摄像头采集图像，驱动芯片的驱动电压默认处于低电压，在调整光圈之前，先将驱动芯片的驱动电压调整为高电压，再在高电压的驱动下，控制光圈马达改变光圈的孔径大小，使光圈的光圈值调整到目标光圈值，以便获得光圈值调整后的摄像头采集的图像，最后再将驱动芯片的驱动电压调整为低电压。
其中，目标光圈值可以为用户手动调整光圈时，设置的光圈值，也可以为电子设备启动自动曝光功能时，通过自动曝光算法计算得到的光圈值。具体关于目标光圈值的确定可以参见后续详细内容，这里先不展开。
可以看出，光圈马达的驱动芯片的驱动电压默认处于低电压，只有在需要调整光圈时，将驱动芯片的驱动电压暂时调整为高电压，避免了驱动芯片的驱动电压一直处于高电压，改善了摄像头模组工作过程中的功率损耗。
图1A示出了电子设备100的硬件结构示意图。
电子设备100可以是手机、平板电脑、桌面型计算机、膝上型计算机、手持计算机、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、上网本，以及蜂窝电话、个人数字助理(personal digital assistant，PDA)、增强现实(augmented reality，AR)设备、虚拟现实(virtual reality，VR)设备、人工智能(artificial intelligence,AI)设备、可穿戴式设备、车载设备、智能家居设备和/或智慧城市设备，本申请实施例对该电子设备的具体类型不作特殊限制。
电子设备100可以包括处理器110，外部存储器接口120，内部存储器121，通用串行总线(universal serial bus，USB)接口130，充电管理模块140，电源管理模块(Power Management Unit，PMU)141，电池142，天线1，天线2，移动通信模块150，无线通信模块160，音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，传感器模块180，按键190，马达191，指示器192，摄像头193，显示屏194，以及用户标识模块(subscriber identification module，SIM)卡接口195等。其中传感器模块180可以包括压力传感器180A，陀螺仪传感器180B，气压传感器180C，磁传感器180D，加速度传感器180E，距离传感器180F，接近光传感器180G，指纹传感器180H，温度传感器180J，触摸传感器180K，环境光传感器180L，骨传导传感器180M等。
可以理解的是，本发明实施例示意的结构并不构成对电子设备100的具体限定。在本申请另一些实施例中，电子设备100可以包括比图示更多或更少的部件，或者组合某些部件，或者拆分某些部件，或者不同的部件布置。图示的部件可以以硬件，软件或软件和硬件的组合实现。
处理器110可以包括一个或多个处理单元，例如：处理器110可以包括应用处理器(application processor，AP)，调制解调处理器，图形处理器(graphics processing unit，GPU)，图像信号处理器(image signal processor，ISP)，控制器，视频编解码器，数字信号处理器(digital signal processor，DSP)，基带处理器，和/或神经网络处理器(neural-network processing unit，NPU)等。其中，不同的处理单元可以是独立的器件，也可以集成在一个或多个处理器中。
控制器可以根据指令操作码和时序信号，产生操作控制信号，完成取指令和执行指令的控制。
处理器110中还可以设置存储器，用于存储指令和数据。在一些实施例中，处理器110中的存储器为高速缓冲存储器。该存储器可以保存处理器110刚用过或循环使用的指令或数据。如果处理器110需要再次使用该指令或数据，可从所述存储器中直接调用。避免了重复存取，减少了处理器110的等待时间，因而提高了系统的效率。
在一些实施方式中，处理器110可以计算摄像头193采集的图像的清晰度，通过自动对焦算法，计算出向对焦马达193C的驱动芯片193E输入的参数，例如code值，或者，根据用户输入的镜头位置，计算出该镜头位置所对应的该参数。其中，该参数可用于控制驱动芯片193E输出给对焦马达193C的电流大小，使对焦马达193C根据该不同大小的电流，能够产生不同大小的推力推动镜头193A，使镜头193A移动到 不同的位置，进而调整摄像头193采集的图像的清晰度。示例性地，处理器110可以具体通过ISP计算图像的清晰度，确定该参数。具体关于对焦马达193C以及驱动芯片193E的描述可以参见后续内容，这里先不赘述。
在一些实施例中，处理器110可以计算摄像头193采集的图像的亮度，并通过自动曝光算法，确定目标光圈值，或者，获取用户设置的目标光圈值，计算出向光圈马达193D的驱动芯片193E输入的参数，例如code值。该参数可用于控制驱动芯片193E输出给光圈马达193D的电流大小，使光圈马达193D根据该不同大小的电流，能够产生不同大小的推力推动光圈193B的叶片，使光圈193B的光圈值调整到目标光圈值，进而使得在光圈值调整到目标光圈值之后，图像的亮度达到阈值，实现摄像头193的自动曝光。示例性地，处理器110可以具体通过ISP计算图像的亮度，确定该参数。具体关于光圈马达193D以及驱动芯片193E的描述可以参见后续内容，这里先不赘述。
充电管理模块140用于从充电器接收充电输入。充电管理模块140为电池142充电的同时，还可以通过电源管理模块141为电子设备供电。
电源管理模块141用于连接电池142，充电管理模块140与处理器110。电源管理模块141接收电池142和/或充电管理模块140的输入，为处理器110，内部存储器121，显示屏194，摄像头193，和无线通信模块160等供电。电源管理模块141还可以用于监测电池容量，电池循环次数，电池健康状态(漏电，阻抗)等参数。在其他一些实施例中，电源管理模块141也可以设置于处理器110中。在另一些实施例中，电源管理模块141和充电管理模块140也可以设置于同一个器件中。
在一些实施例中，电源管理模块141可用于为摄像头193中的一个或多个组件供电。具体地，电源管理模块141可以为摄像头193中的对焦马达193C或光圈马达193D的驱动芯片193E供电。其中，针对对焦马达193C或光圈马达193D所在的驱动芯片193E，电源管理模块141可以提供两个或两个以上的电压输出引脚，不同的引脚可用于提供不同大小的电压。其中，可以根据驱动芯片193E所需的驱动电压，切换驱动芯片193E连接不同的电压输出引脚，达到动态调整驱动芯片193E的驱动电压的效果。具体地，可以根据镜头193A移动的位置来控制对焦马达193C的驱动芯片193E的驱动电压大小；根据光圈大小是否改变，来控制光圈马达193D的驱动芯片193E的驱动电压的电压大小。具体关于电源管理模块141与对焦马达193C和光圈马达193D的驱动芯片193E的连接关系可以参见图2的相关描述，这里先不赘述。
电子设备100的无线通信功能可以通过天线1，天线2，移动通信模块150，无线通信模块160，调制解调处理器以及基带处理器等实现。
天线1和天线2用于发射和接收电磁波信号。电子设备100中的每个天线可用于覆盖单个或多个通信频带。不同的天线还可以复用，以提高天线的利用率。
移动通信模块150可以提供应用在电子设备100上的包括2G/3G/4G/5G等无线通信的解决方案。移动通信模块150可以包括至少一个滤波器，开关，功率放大器，低噪声放大器(low noise amplifier，LNA)等。
调制解调处理器可以包括调制器和解调器。其中，调制器用于将待发送的低频基带信号调制成中高频信号。解调器用于将接收的电磁波信号解调为低频基带信号。随后解调器将解调得到的低频基带信号传送至基带处理器处理。低频基带信号经基带处理器处理后，被传递给应用处理器。应用处理器通过音频设备(不限于扬声器170A，受话器170B等)输出声音信号，或通过显示屏194显示图像或视频。
无线通信模块160可以提供应用在电子设备100上的包括无线局域网(wireless local area networks，WLAN)(如无线保真(wireless fidelity，Wi-Fi)网络)，蓝牙(bluetooth，BT)，全球导航卫星系统(global navigation satellite system，GNSS)，调频(frequency modulation，FM)，近距离无线通信技术(near field communication，NFC)，红外技术(infrared，IR)等无线通信的解决方案。无线通信模块160可以是集成至少一个通信处理模块的一个或多个器件。
电子设备100通过GPU，显示屏194，以及应用处理器等实现显示功能。GPU为图像处理的微处理器，连接显示屏194和应用处理器。GPU用于执行数学和几何计算，用于图形渲染。处理器110可包括一个或多个GPU，其执行程序指令以生成或改变显示信息。
显示屏194用于显示图像，视频等。
在一些实施例中，显示屏194可用于显示摄像头193实时采集的图像。
电子设备100可以通过ISP，摄像头193，视频编解码器，GPU，显示屏194以及应用处理器等实现拍摄功能。
ISP用于处理摄像头193反馈的数据。例如，拍照时，打开快门，光线通过镜头被传递到摄像头感光芯片上，光信号转换为电信号，摄像头感光芯片将所述电信号传递给ISP处理，转化为肉眼可见的图像。 ISP还可以对图像的噪点，亮度进行算法优化。ISP还可以对拍摄场景的曝光，色温等参数优化。在一些实施例中，ISP可以设置在摄像头193中。
摄像头193用于捕获静态图像或视频。物体通过镜头生成光学图像投射到感光芯片。在一些实施例中，电子设备100可以包括1个或N个摄像头193，N为大于1的正整数。
具体地，针对一个摄像头193，摄像头193可以包括：镜头193A、光圈193B、对焦马达193C、光圈马达193D、驱动芯片193E、感光芯片193F等等组件。在本申请实施例中，基于摄像头由多个组件构成，该摄像头还可以被称为摄像头模组。其中：
镜头193A可以改变光线的传播方向，将被拍摄物的反射光聚集在感光芯片193F上。另外，镜头193A位置的改变，可以改变摄像头193采集的图像的清晰度。
光圈193B由多个光圈叶片组成，移动光圈叶片的位置可以改变光圈193B的孔径大小，改变被拍摄物的反射光透过镜头193A聚集在感光芯片193F上的光线量，即改变进光量，进而改变图像的亮度或景深等等显示效果。其中，光圈193B的不同孔径大小对应不同的光圈值，光圈193B的孔径越大，光圈值越小，进光量越大，图像的亮度越高，景深越浅(背景越模糊)，光圈193B的孔径越小，光圈值越大，进光量越小，图像的亮度越低，景深越深(背景越清晰)。
对焦马达193C用于推动镜头193A的移动，改变镜头193A与感光芯片193F的距离，进而改变摄像头193采集的图像的清晰度。具体地，该对焦马达193C可以将电能、电磁能等等转化为机械能带动镜头193A的移动。示例性地，该对焦马达193C可以为音圈马达、超声波马达、步进马达、记忆合金马达等等类型的马达。例如，音圈马达可以通过控制电流带动弹片或弹簧运行，进而调节镜头193A的位置，使被拍摄物的成像清晰。
光圈马达193D用于推动光圈193B中的光圈叶片移动，改变光圈193B的孔径大小，进而改变摄像头193采集的图像的亮度或景深。
驱动芯片193E用于向摄像头193中的一个或多个组件输送电流，控制该一个或多个组件的驱动。其中，驱动芯片193E可以根据获得的code值，来控制输送的电流大小。在一些实施例中，摄像头193中可以包括1个或M个驱动芯片193E，M为大于1的正整数。示例性地，该驱动芯片193E可以包括对焦马达193C的驱动芯片，光圈马达193D的驱动芯片。其中，对焦马达193C的驱动芯片用于驱动对焦马达193C，控制对焦马达193C将镜头193A移动到目标位置，光圈马达193D的驱动芯片用于驱动光圈马达193D，控制光圈马达193D将光圈193B的光圈值调整为目标光圈值。
另外，驱动芯片193E可以在电源管理模块141提供的动态变化的驱动电压下，控制对焦马达193C和光圈马达193D的驱动。其中，对焦马达193C的驱动芯片可以根据镜头193A移动的位置，确定其所需的驱动电压。当镜头193A移动到目标位置距离所需推力越小，驱动芯片193E所需的驱动电压越小，当镜头193A移动到目标位置距离所需推力越大，驱动芯片193E所需的驱动电压越大。光圈马达193D的驱动芯片可以根据光圈193B是否调整，确定其所需的驱动电压。光圈马达193D的驱动芯片在光圈193B调整过程中所需的驱动电压高于光圈193B未调整时所需的驱动电压。
具体关于电源管理模块141向对焦马达193C和光圈马达193D的驱动芯片193E提供动态变化的驱动电压的过程可以参见图2的相关描述，这里先不赘述。
感光芯片193F可以是电荷耦合器件(charge coupled device，CCD)或互补金属氧化物半导体(complementary metal-oxide-semiconductor，CMOS)光电晶体管。感光芯片193F可以将光信号转换为电信号，之后将电信号传递给ISP转换成数字图像信号。ISP将数字图像信号输出到DSP加工处理。DSP将数字图像信号转换成标准的RGB，YUV等格式的图像信号。
数字信号处理器用于处理数字信号，除了可以处理数字图像信号，还可以处理其他数字信号。例如，当电子设备100在频点选择时，数字信号处理器用于对频点能量进行傅里叶变换等。
视频编解码器用于对数字视频压缩或解压缩。电子设备100可以支持一种或多种视频编解码器。这样，电子设备100可以播放或录制多种编码格式的视频，例如：动态图像专家组(moving picture experts group，MPEG)1，MPEG2，MPEG3，MPEG4等。
内部存储器121可以包括一个或多个随机存取存储器(random access memory，RAM)和一个或多个非易失性存储器(non-volatile memory，NVM)。
在一些实施例中，内部存储器121可用于存储自动对焦算法，自动曝光算法等等，该自动对焦算法可用于实现自动调整摄像头193采集的图像的清晰度，使摄像头193采集的图像的清晰度达到要求，自动曝光算法可用于实现自动调整摄像头193采集的图像的亮度，使摄像头193采集的图像的亮度等于阈值。另 外，内部存储器121还可用于存储映射表，例如，马达移动的目标位置与目标电压的映射表，电子设备100可以根据该映射表确定当前镜头193A移动到目标位置时，对焦马达193C的驱动芯片所需的目标电压，又例如，光圈值与光圈叶片的位置的映射表，电子设备100可以根据该映射表确定当前需要调整的光圈大小所对应的光圈叶片需要移动的目标位置。具体关于内部存储器121中存储的映射表可以参见后续内容，这里先不赘述。
外部存储器接口120可以用于连接外部的非易失性存储器，实现扩展电子设备100的存储能力。外部的非易失性存储器通过外部存储器接口120与处理器110通信，实现数据存储功能。例如将音乐，视频等文件保存在外部的非易失性存储器中。
电子设备100可以通过音频模块170，扬声器170A，受话器170B，麦克风170C，耳机接口170D，以及应用处理器等实现音频功能。例如音乐播放，录音等。
音频模块170用于将数字音频信息转换成模拟音频信号输出，也用于将模拟音频输入转换为数字音频信号。音频模块170还可以用于对音频信号编码和解码。
扬声器170A，也称“喇叭”，用于将音频电信号转换为声音信号。电子设备100可以通过扬声器170A收听音乐，或收听免提通话。
受话器170B，也称“听筒”，用于将音频电信号转换成声音信号。当电子设备100接听电话或语音信息时，可以通过将受话器170B靠近人耳接听语音。
麦克风170C，也称“话筒”，“传声器”，用于将声音信号转换为电信号。当拨打电话或发送语音信息时，用户可以通过人嘴靠近麦克风170C发声，将声音信号输入到麦克风170C。电子设备100可以设置至少一个麦克风170C。
耳机接口170D用于连接有线耳机。
压力传感器180A用于感受压力信号，可以将压力信号转换成电信号。
陀螺仪传感器180B可以用于确定电子设备100的运动姿态。在一些实施例中，可以通过陀螺仪传感器180B确定电子设备100围绕三个轴(即，x，y和z轴)的角速度。陀螺仪传感器180B可以用于拍摄防抖。示例性的，当按下快门，陀螺仪传感器180B检测电子设备100抖动的角度，根据角度计算出镜头模组需要补偿的距离，让镜头通过反向运动抵消电子设备100的抖动，实现防抖。陀螺仪传感器180B还可以用于导航，体感游戏场景。
气压传感器180C用于测量气压。在一些实施例中，电子设备100通过气压传感器180C测得的气压值计算海拔高度，辅助定位和导航。
磁传感器180D包括霍尔传感器。电子设备100可以利用磁传感器180D检测翻盖皮套的开合。
加速度传感器180E可检测电子设备100在各个方向上(一般为三轴)加速度的大小。当电子设备100静止时可检测出重力的大小及方向。还可以用于识别电子设备姿态，应用于横竖屏切换，计步器等应用。
距离传感器180F，用于测量距离。电子设备100可以通过红外或激光测量距离。在一些实施例中，拍摄场景，电子设备100可以利用距离传感器180F测距以实现快速对焦。
接近光传感器180G可以包括例如发光二极管(LED)和光检测器，例如光电二极管。电子设备100使用光电二极管检测来自附近物体的红外反射光。当检测到充分的反射光时，可以确定电子设备100附近有物体。当检测到不充分的反射光时，电子设备100可以确定电子设备100附近没有物体。
环境光传感器180L用于感知环境光亮度。电子设备100可以根据感知的环境光亮度自适应调节显示屏194亮度。环境光传感器180L也可用于拍照时自动调节白平衡。
指纹传感器180H用于采集指纹。电子设备100可以利用采集的指纹特性实现指纹解锁，访问应用锁，指纹拍照，指纹接听来电等。
温度传感器180J用于检测温度。在一些实施例中，电子设备100利用温度传感器180J检测的温度，执行温度处理策略。例如，当温度传感器180J上报的温度超过阈值，电子设备100执行降低位于温度传感器180J附近的处理器的性能，以便降低功耗实施热保护。
触摸传感器180K，也称“触控器件”。触摸传感器180K可以设置于显示屏194，由触摸传感器180K与显示屏194组成触摸屏，也称“触控屏”。触摸传感器180K用于检测作用于其上或附近的触摸操作。触摸传感器可以将检测到的触摸操作传递给应用处理器，以确定触摸事件类型。
骨传导传感器180M可以获取振动信号。
按键190包括开机键，音量键等。电子设备100可以接收按键输入，产生与电子设备100的用户设置以及功能控制有关的键信号输入。
马达191可以产生振动提示。马达191可以用于来电振动提示，也可以用于触摸振动反馈。
指示器192可以是指示灯，可以用于指示充电状态，电量变化，也可以用于指示消息，未接来电，通知等。
SIM卡接口195用于连接SIM卡。SIM卡可以通过插入SIM卡接口195，或从SIM卡接口195拔出，实现和电子设备100的接触和分离。
电子设备可以是搭载iOS、Android、Microsoft或者其它操作系统的便携式终端设备，例如手机、平板电脑、可穿戴设备等，还可以是具有触敏表面或触控面板的膝上型计算机(Laptop)、具有触敏表面或触控面板的台式计算机等非便携式终端设备。电子设备100的软件系统可以采用分层架构，事件驱动架构，微核架构，微服务架构，或云架构。本发明实施例以分层架构的Android系统为例，示例性说明电子设备100的软件结构。
图1B是本申请实施例的电子设备100的软件结构框图。
分层架构将软件分成若干个层，每一层都有清晰的角色和分工。层与层之间通过软件接口通信。在一些实施例中，将Android系统分为四层，从上至下分别为应用程序层，应用程序框架层，安卓运行时(Android runtime)和系统库，以及内核层。
应用程序层可以包括一系列应用程序包。
如图1B所示，应用程序包可以包括相机，图库，日历，通话，地图，导航，WLAN，蓝牙，音乐，视频，短信息等应用程序。
应用程序框架层为应用程序层的应用程序提供应用编程接口(application programming interface，API)和编程框架。应用程序框架层包括一些预先定义的函数。
如图1B所示，应用程序框架层可以包括窗口管理器，内容提供器，视图系统，电话管理器，资源管理器，通知管理器等。
窗口管理器用于管理窗口程序。窗口管理器可以获取显示屏大小，判断是否有状态栏，锁定屏幕，截取屏幕等。
内容提供器用来存放和获取数据，并使这些数据可以被应用程序访问。所述数据可以包括视频，图像，音频，拨打和接听的电话，浏览历史和书签，电话簿等。
视图系统包括可视控件，例如显示文字的控件，显示图片的控件等。视图系统可用于构建应用程序。显示界面可以由一个或多个视图组成的。例如，包括短信通知图标的显示界面，可以包括显示文字的视图以及显示图片的视图。
电话管理器用于提供电子设备100的通信功能。例如通话状态的管理(包括接通，挂断等)。
资源管理器为应用程序提供各种资源，比如本地化字符串，图标，图片，布局文件，视频文件等等。
通知管理器使应用程序可以在状态栏中显示通知信息，可以用于传达告知类型的消息，可以短暂停留后自动消失，无需用户交互。比如通知管理器被用于告知下载完成，消息提醒等。通知管理器还可以是以图表或者滚动条文本形式出现在系统顶部状态栏的通知，例如后台运行的应用程序的通知，还可以是以对话窗口形式出现在屏幕上的通知。例如在状态栏提示文本信息，发出提示音，电子设备振动，指示灯闪烁等。
Android Runtime包括核心库和虚拟机。Android runtime负责安卓系统的调度和管理。
核心库包含两部分：一部分是java语言需要调用的功能函数，另一部分是安卓的核心库。
应用程序层和应用程序框架层运行在虚拟机中。虚拟机将应用程序层和应用程序框架层的java文件执行为二进制文件。虚拟机用于执行对象生命周期的管理，堆栈管理，线程管理，安全和异常的管理，以及垃圾回收等功能。
系统库可以包括多个功能模块。例如：表面管理器(surface manager)，媒体库(Media Libraries)，三维图形处理库(例如：OpenGL ES)，2D图形引擎(例如：SGL)等。
表面管理器用于对显示子系统进行管理，并且为多个应用程序提供了2D和3D图层的融合。
媒体库支持多种常用的音频，视频格式回放和录制，以及静态图像文件等。媒体库可以支持多种音视频编码格式，例如:MPEG4，H.264，MP3，AAC，AMR，JPG，PNG等。
三维图形处理库用于实现三维图形绘图，图像渲染，合成，和图层处理等。
2D图形引擎是2D绘图的绘图引擎。
内核层是硬件和软件之间的层。内核层至少包含显示驱动，摄像头驱动，音频驱动，传感器驱动。
下面结合捕获拍照场景，示例性说明电子设备100软件以及硬件的工作流程。
当触摸传感器180K接收到触摸操作，相应的硬件中断被发给内核层。内核层将触摸操作加工成原始输入事件(包括触摸坐标，触摸操作的时间戳等信息)。原始输入事件被存储在内核层。应用程序框架层从内核层获取原始输入事件，识别该输入事件所对应的控件。以该触摸操作是触摸单击操作，该单击操作所对应的控件为相机应用图标的控件为例，相机应用调用应用框架层的接口，启动相机应用，进而通过调用内核层启动摄像头驱动，通过摄像头193捕获静态图像或视频。
图2为本申请实施例提供的电压调整装置的结构示意图。
如图2所示，该电压调整装置可包括：PMU，驱动芯片1，驱动芯片2。其中：
PMU可用于为驱动芯片1和驱动芯片2供电。
驱动芯片1可以是指前述提及的对焦马达的驱动芯片。该驱动芯片可以在PMU提供的驱动电压的驱动下，控制对焦马达移动镜头，改变图像的清晰度。另外，驱动芯片1还可以获取code值，根据该code值控制向对焦马达输送的电流大小，并根据该code值确定驱动电压，将其所需的驱动电压通知给PMU，以便PMU动态调整驱动芯片1的驱动电压。
驱动芯片2可以是指前述提及的光圈马达的驱动芯片。该驱动芯片可以在PMU提供的驱动电压的驱动下，控制光圈马达改变光圈大小，进而改变图像的亮度或景深。另外，驱动芯片2还可以根据光圈大小是否需要调整，确定驱动电压，并将其所需的驱动电压通知给PMU，以便PMU动态调整驱动芯片2的驱动电压。
具体关于PMU以及驱动芯片1和驱动芯片2的描述可以参见图1A中的电源管理模块141、驱动芯片193E的相关内容，这里不再赘述。
具体地，PMU可以为驱动芯片1提供多个电源输出引脚，不同的输出引脚可用于输出不同的电压，例如第一电压，第二电压、第三电压等等，PMU可以获取驱动芯片1所需的电压，为驱动芯片1选择不同的电源输出引脚，向驱动芯片1提供不同的驱动电压。
示例性地，如图2所示，PMU可以为驱动芯片1提供两个电源输出引脚，其中一个输出引脚用于输出高电压，例如，3.2V，另一个输出引脚用于输出低电压，例如，1.86V。其中，示例性地，驱动芯片1可以默认连接PMU提供的高电压输出引脚。
类似的，PMU可以为驱动芯片2提供多个电源输出引脚，不同的输出引脚可用于输出不同的电压，例如第一电压，第二电压、第三电压等等，PMU可以获取驱动芯片2所需的电压，为驱动芯片2选择不同的电源输出引脚，向驱动芯片2提供不同的驱动电压。
示例性地，如图2所示，PMU可以为驱动芯片2提供两个电源输出引脚，其中一个输出引脚用于输出高电压，例如3.2V，另一个输出引脚用于输出低电压，例如1.86V。其中，示例性地，驱动芯片2可以默认连接PMU提供的低电压输出引脚。
应理解，PMU还可以提供更多或更少的电源输出引脚。例如，PMU可以为驱动芯片1提供三个电源输出引脚，包括高电压输出引脚、中电压输出引脚、低电压输出引脚，示例性地，这三个电源输出引脚可以分别用于输出3.2V、2.5V、1.86V的电压。又例如，PMU可以仅为驱动芯片2提供一个电源输出引脚，该一个电源输出引脚可以输出动态变化的电压，当驱动芯片2需要高电压时，该电源输出引脚输出3.2V，当驱动芯片2需要低电压时，则该电源输出引脚调整输出电压为1.86V。上述提及的高电压和低电压仅用于表示两个电压相比较之下的电压高低，不用于限定电压的数值大小，下文提及的高电压和低电压类似，以下不再赘述。
另外，图2示出了驱动芯片1和驱动芯片2可以集成在摄像头模组中的一块芯片上。应理解，驱动芯片1和驱动芯片2相互独立，本申请实施例对驱动芯片1和驱动芯片2的物理位置不作限制。另外，该电压调整装置可以仅用于动态调整驱动芯片1的驱动电压，则此时，电压调整装置不包括驱动芯片2，以及PMU为驱动芯片2提供的多个电压输出引脚，或者仅为驱动芯片2提供不变的驱动电压。或者，该电压调整装置可以仅用于动态调整驱动芯片2的驱动电压，则此时，PMU不包括驱动芯片1以及为驱动芯片1提供的多个电压输出引脚，或者仅为驱动芯片1提供不变的驱动电压。
图2只是示例性举例，不构成对本申请实施例的限制，该电压调整装置还可以包括更多或更少的部件。示例性地，该电压调整装置还可以包括摄像头模组中的其他组件，例如，对焦马达、光圈马达等等。
本申请实施例提供的电压调整方法能够根据摄像头模组中的组件的工作情况，动态调整该组件的驱动 电压，避免该组件的驱动电压一直保持高电压不变，进而降低摄像头模组的功耗。
下面以两个实施例来分别介绍动态调整不同摄像头组件的驱动电压的详细过程。
实施例(一)
图3为本申请实施例提供的对焦涉及到的示意图。
从图3可以看出，依据小孔成像原理，被拍摄物的反射光透过摄像头中的镜头，到达感光芯片上进行成像，进而呈现为用户能够在设备中查看到的图像。对焦是指调整镜头中的一个或多个镜片的位置，使被拍摄物的像平面落在感光芯片的成像表面，实现被拍摄物成像清晰。进一步地，当被拍摄物包括空间中距离镜头不同远近的物体时，对焦还可以使焦点聚集在被拍摄物的主体，使被拍摄物的主体的像平面落在感光芯片的成像表面，实现被拍摄物的主体部分成像清晰，即，使图像中远端的物体清晰，或使图像中近端的物体清晰。
其中，可以通过对焦马达向镜片施加推力来移动镜头，改变图像的清晰度。由于对焦马达由驱动芯片进行驱动，本申请实施例提供的电压调整方法能够根据镜头需要移动的目标位置，动态调整对焦马达的驱动芯片的驱动电压。示例性地，当镜头到达目标位置所需推力越大，驱动电压越大，镜头到达目标位置所需推力越小，驱动电压越小。
图4为本申请实施例提供的一种电压调整方法的流程示意图。
如图4所示，该方法包括：
S101.电子设备100启动摄像头，该摄像头中的镜头处于初始位置，驱动芯片的驱动电压处于初始电压。
电子设备100的摄像头中可以包括：镜头、对焦马达、对焦马达的驱动芯片、感光芯片等等组件。其中，对焦马达的驱动芯片可以驱动对焦马达，控制对焦马达产生推力从而移动镜头，进而改变镜头和感光芯片的距离，改变摄像头采集的图像的清晰度。具体关于镜头、对焦马达、对焦马达的驱动芯片以及感光芯片的描述可以参见前述图1A中关于镜头193A、对焦马达193C、驱动芯片193E、感光芯片193F的相关内容，这里不再赘述。
电子设备100可以在以下两种情况下启动摄像头：
1)电子设备100可以在启动拍摄功能时，启动摄像头
该拍摄功能可以是指相机应用包含的拍照或录像功能，也可以是指其他能够触发拍摄的应用所包含的相关功能，例如，识图功能、扫码功能、视频通话功能等等。
示例性地，电子设备100可以在检测到用户作用于桌面显示的相机图标的点击操作后，启动摄像头。或者，电子设备100可以在检测到用户开启相机应用的语音指令后，启动摄像头。或者，电子设备100可以在检测到用户启动聊天应用的视频通话功能的操作后，启动摄像头。
另外，当电子设备100包含多个摄像头时，例如标准摄像头、长焦摄像头和广角摄像头，或者，前置摄像头和后置摄像头，该启动的摄像头可以为该拍摄功能下预设的摄像头。例如，当电子设备在启动视频通话功能时，启动摄像头，该摄像头可以为前置摄像头。
2)电子设备100可以在切换摄像头时，启动多个摄像头中的一个摄像头
当电子设备100包括多个摄像头，电子设备100可以在切换摄像头时，启动该多个摄像头中的一个摄像头。
示例性地，电子设备100可以在检测到用户切换摄像头，例如将前置摄像头切换为后置摄像头时，启动该后置摄像头。或者，当不同拍摄模式使用不同的摄像头时，电子设备100可以在检测到用户切换到目标拍摄模式时，启动该目标拍摄模式下使用的摄像头。又或者，电子设备100可以在检测到用户改变变焦倍率时，启动用户调整的目标变焦倍率所对应的摄像头。
应理解，本申请实施例对电子设备100启动摄像头的时机不作限制。
其中，在启动摄像头之后，摄像头中的镜头处于初始位置，对焦马达的驱动芯片的驱动电压处于初始电压。其中，该初始位置可以为预设的位置，例如，该初始位置可以为镜头能够移动范围的最远端或者中心点。该初始电压也可以为预设的电压，例如3.2V。应理解，该初始电压能够保证镜头能够在启动摄像头后，位于该初始位置。如果镜头的初始位置需要对焦马达施加较大的力才能够达到，那么该初始电压应为高电压，如果镜头的初始位置仅需要对焦马达施加较小的力就能达到，那么该初始电压可以为高电压和低电压。因此，优选地，该初始电压为高电压，保证镜头的初始位置无论需要对焦马达施加多大的力，都能够实现将镜头移动到该初始位置。本申请实施例对该初始位置和初始电压不作限制。
在本申请实施例中，该初始位置还可以被称为第四位置，该初始电压还可以被称为第四驱动电压。
S102.电子设备100通过摄像头采集图像。
该图像具体为被拍摄物的反射光透过摄像头中的镜头，在感光芯片上成像并经过其他组件，例如ISP的进一步处理，包括：线性校正、噪点去除、换点修补、颜色插值、白平衡校正等等，得到的图像。
应理解，电子设备100通过摄像头采集图像会在电子设备100使用摄像头的过程中持续执行。其中，电子设备100在对焦过程中，也一直在通过摄像头执行图像的采集，换句话说，在对焦过程中，电子设备100通过摄像头采集的图像包括镜头在不同位置时，采集的图像。
另外，在电子设备100启动摄像头之后，电子设备100可以在用户界面，例如预览界面，或取景器中实时显示摄像头采集的图像。
S103.电子设备100确定镜头的目标位置。
电子设备100可以在启动对焦时，触发确定镜头的目标位置。其中，对焦包括手动对焦和自动对焦。手动对焦是指用户手动调整镜头的位置，使被拍摄物在图像中呈现清晰的画面。自动对焦是指电子设备100自动调整镜头的位置，使被拍摄物在图像中呈现清晰的画面。
对于支持手动对焦的电子设备100，电子设备100可以包括对焦环，电子设备100可以检测到用户作用在该对焦环上的操作，触发手动对焦，并根据用户转动对焦环的幅度，确定用户调整的镜头的目标位置。
对于支持自动对焦的电子设备100，电子设备100可以在以下三种情况下触发自动对焦：
1)在启动摄像头后，触发自动对焦
其中，电子设备100可以在启动拍摄功能或者切换摄像头时触发启动摄像头。也就是说，电子设备100可以在启动拍摄功能后，触发自动调整当前启动的摄像头采集的图像的清晰度，完成自动对焦。或者，电子设备100可以在切换摄像头之后，调整当前切换后的摄像头采集的图像的清晰度，完成自动对焦。
具体关于电子设备100启动摄像头的时机可以参见前述步骤S101的相关内容，这里不再赘述。
2)当被拍摄物到摄像头的距离发生变化时，触发对图像的自动对焦
根据小孔成像原理，被拍摄物到摄像头的距离发生变化，会导致图像的成像结果发生变化，使图像变得模糊。因此，电子设备100可以在被拍摄物到镜头的距离发生变化时，触发自动对焦。
其中，电子设备100可以通过计算图像的清晰度，根据图像的清晰度的变化来确定被拍摄物到摄像头的距离是否发生变化。或者，电子设备100可以通过传感器，例如红外传感器，距离传感器等等，检测被拍摄物与摄像头的距离，来确定被拍摄物到摄像头的距离是否变化。
3)当对焦点发生变化时，触发对图像的自动对焦
对焦点可以呈现为拍摄过程中，预览界面或取景器中的点，该点以及该点周围所在的画面呈现的清晰度最高。在预览界面或取景器显示的图像中，对焦点所在的位置即为拍摄主体所在的位置。更改对焦点，可以更改拍摄的主体，更改图像中画面最清晰的区域。例如，当被拍摄物包括位于前景的人物和位于背景的风景，如果将人物作为拍摄的主体，则人物作为图像中的对焦点，在对焦后，人物在图像中最清晰，如果将风景作为拍摄的主体，则风景作为图像中的对焦点，在对焦后，风景在图像中最清晰。
在一些实施方式中，电子设备100在对焦过程中的对焦点可以为预览界面或取景器中的中心点或中心点附近的一个或多个点。
示例性地，电子设备100可以在检测到用户更改对焦点，例如作用于图像的预览界面某一点的点击操作，将该点击操作作用的位置作为用户更改的对焦点，并触发对图像的自动对焦，通过移动镜头，将用户点击操作作用的画面区域调整至最清晰的状态。
可以理解的是，电子设备100启动自动对焦的时机不限于上述三种，本申请实施例对此不作限制。
在自动对焦过程中，电子设备100可以通过自动对焦算法来确定镜头的目标位置。
由于自动对焦的原理是通过不断调整镜头与感光芯片的距离，分析镜头在不同位置上所调整得到的图像清晰度，来逐渐将镜头调整到合适的位置，得到清晰度达到要求的图像，从而完成图像的对焦。其中，图像的清晰度达到要求可以是指图像的清晰度达到峰值或者图像中被拍摄物的主体清晰度达到峰值。因此，在自动对焦过程中，电子设备100需要多次确定镜头的位置，获取镜头在不同位置的图像，并在移动镜头的过程中动态调整驱动芯片的电压，即重复执行步骤S103-S106，直到电子设备100找到图像清晰度达到要求时的镜头位置。具体关于后续步骤的描述可以参见后续内容。
在自动对焦算法中，可以通过爬山搜索法、反差对焦法、黄金搜索法等等方法来调整镜头，寻找清晰度达到要求时，镜头所在的位置。以反差对焦法为例，电子设备100可以从镜头可移动范围的一端向另一 端，遍历取值，将镜头依次移动到该遍历的每一个位置上，并计算镜头在每一个位置上的图像清晰度，从中找到清晰度最高的点，并最终回到该清晰度最高时，该镜头的位置，从而实现自动对焦。或者，以爬山搜索法为例，电子设备100可以在移动镜头的过程中，通过比较镜头在之前移动的位置上的图像清晰度，来确定下一次移动的目标位置。例如，镜头在A位置的清晰度低于在B位置的清晰度时，则下一次的目标位置在靠近B位置并远离A位置的地方取值，否者，下一次的目标位置在远离B位置并靠近A位置的地方取值，直到镜头逐渐靠近并到达清晰度最高的位置。
其中，图像清晰度是指图像细节变换变化的敏锐程度。在图像细节的边缘处，光学密度或亮度随位置的变化越敏锐(变化快)、越剧烈(反差大)，则细节的边缘就越清晰，可辨程度越高，图像清晰度越高。示例性地，电子设备100可以通过频域函数、灰度函数、信息熵函数、统计学函数等等算法分析图像的清晰度。
在电子设备100确定目标位置的过程中，电子设备100可以确定一个用于指示镜头的目标位置的参数，例如code值。在控制镜头移动时，可以通过该code值控制驱动芯片输出给对焦马达的电流值。其中，一个code值对应一个电流值，驱动芯片可以根据该code值识别出向对焦马达输出的电流，对焦马达可以在不同的电流作用下产生不同大小的推力推动镜头，使镜头移动到不同的位置。示例性地，假设镜头可移动的所有位置所对应的code值包括0到1023这1024个值，在反差对焦法中，电子设备100可以在重复调整镜头位置的过程中，即执行步骤S103-S106，在确定目标位置时，确定code值依次包括：从0到1023递增或从1023到0递减的code值，以及回到图像清晰度最高点对应的code值。
S104.电子设备100根据该目标位置确定目标电压。
由于对焦马达通过向镜头施加推力，来改变镜头所在的位置。当镜头需要移动到不同位置时，对焦马达需要施加的推力也不同。那么，可以根据对焦马达所需的推力大小来确定驱动对焦马达的驱动芯片的驱动电压。推力越大时，驱动电压也就越大，推力越小时，驱动电压也就越小。换句话说，当镜头移动到第一位置时所需的推力，大于，镜头移动到第二位置时所需的推力，那么目标位置为第一位置时的目标电压，大于，目标位置为第二位置时的目标电压。
具体实现中，电子设备100可以提前预置有镜头位置与电压的映射关系，该映射关系指示了将镜头移动到不同位置时，驱动芯片所需的驱动电压。例如，假设电子设备100预置有镜头位置在第一范围与第一电压的映射关系，以及镜头位置在第二范围与第二电压的映射关系，该第一电压为将镜头移动到第一范围内时，驱动芯片所需的驱动电压，该第二电压为将镜头移动到第二范围内时，驱动芯片所需的驱动电压。其中，如果将镜头移动到第一范围内比将镜头移动到第二范围内施加的推力大，则第一电压高于第二电压，又或者，如果将镜头移动到第一范围内比将镜头移动到第二范围内施加的推力小，则第一电压低于第二电压。那么，当该目标位置在第一范围内，则目标电压为第一电压，当该目标位置为第二范围内，则目标电压为第二电压。
其中，该镜头位置与电压的映射关系可以为开发人员在对焦的测试实验中，通过对驱动芯片施加不同的驱动电压，测试镜头移动的距离得到的。开发人员可以提前将该镜头位置与电压的映射关系预置在电子设备100中。
示例性地，以对焦马达为音圈马达为例，图5示例性示出了镜头的位置与电压的映射关系示意图。
音圈马达通过电流带动弹片或弹簧运行，可以控制镜头向两个相反的方向移动。其中，镜头在起点上时，音圈马达施加的推力最小，镜头向起点任意一边移动的位置距离起点越远，音圈马达施加的推力越大，驱动芯片所需的驱动电压也就越大。
如图5所示，镜头可以在(a,d)范围内进行移动，0点为镜头可移动范围(a,d)的中心点，也是镜头的起点。其中，0点对应的code值为512，也就是说，当光圈马达的驱动芯片接收到的code值为512时，驱动芯片可以控制光圈马达将镜头移动到0点，类似的，a点对应的code值为0，b点对应的code值为c1，c点对应的code值为c2，d点对应的code值为1023。
从图5可以看出，当镜头的目标位置位于(b,c)范围内时，目标电压为低电压，当镜头的目标位置位于(a,b)或(c,d)范围内时，目标电压为高电压。也就是说，镜头的目标位置距离镜头的起点较远时，目标电压较大，镜头的目标位置距离镜头的起点较近时，目标电压较小。
应理解，图5只是示例性举例，该表征镜头位置的code值大小以及镜头的位置与电压的映射关系不构成对本申请实施例的限制，在镜头的可移动范围内还可以划分出更多的电压等级，即包含更多镜头位置与电压的映射关系，例如镜头位置的第一范围对应电压A，第二范围对应电压B，第三范围对应电压C。
也就是说，电子设备100可以根据镜头移动的位置，动态调整驱动芯片的驱动电压。例如，镜头的目 标位置为第一位置时，驱动芯片的驱动电压为第一驱动电压，镜头的目标位置为第二位置时，驱动芯片的驱动电压为第二驱动电压，其中，第一驱动电压与第二驱动电压，第一位置与第二位置不同。进一步地，当对焦马达将镜头移动到第一位置所需的推力更大，即第一位置相比于第二位置，距离镜头未被镜头移动的位置(例如第三位置)更远，则第一驱动电压大于第二驱动电压。
在一些实施例中，电子设备100的姿态不同时，镜头位置与电压的映射关系可以不同。这是由于电子设备100的姿态不同时，镜头移动的方向不同，则对焦马达施加给镜头的推力也不同，进而影响到驱动芯片的驱动电压。当镜头移动的方向相对于垂直方向，更偏向水平方向时，镜头移动到目标位置所需的推力更小，驱动芯片的驱动电压也就更小，当镜头移动的方向相对于水平方向，更偏向垂直方向时，镜头移动到目标位置所需的推力更大，驱动芯片的驱动电压也就更大。
展开来说，当镜头平面垂直于地面时，对焦过程中镜头是在水平方向进行水平移动，当镜头平面平行于地面时，对焦过程中镜头是在垂直方向进行上下移动，由于对焦马达对镜片的移动会一定程度上受到重力、惯性等因素的影响，对焦马达使镜头在水平方向移动时施加的推力比镜头在垂直方向时施加的推力更小。也就是说，对焦马达水平推动镜头比垂直推动镜头更容易。
因此，同一目标位置，在电子设备100的姿态不同时，其对应的目标电压可能不同。也就是说，当电子设备100的姿态不同时，电子设备100可以存在不同的镜头位置与电压的映射表。以图5所示的镜头的位置与电压的映射关系示意图来说，相比于镜头处于垂直移动方向，当镜头处于水平移动方向时，低电压所对应的镜头范围更宽，高电压所对应的镜头范围更窄，或者，当镜头处于水平方向移动时，镜头位置在(a,d)中任意一点的电压，比镜头位置处于垂直方向移动时，镜头在该点对应的电压低。
也就是说，电子设备100的姿态不同时，镜头的目标位置为同一位置时，驱动芯片的驱动电压可能不同。其中，电子设备100的姿态可以是指镜头平面与水平面的夹角，当镜头平面与水平面的夹角越大，镜头越趋向于水平方向移动，镜头的目标位置为同一位置时，驱动芯片的驱动电压也就越小。
具体实现中，电子设备100可以在根据目标位置确定目标电压之前，先确定电子设备100的姿态。示例性地，电子设备100可以通过加速度传感器，陀螺仪传感器等等确定电子设备100的姿态。之后，再根据电子设备100的姿态调整镜头位置与电压的映射关系，并根据该调整后的映射关系以及该目标位置确定目标电压。
S105.电子设备100使驱动芯片在目标电压的驱动下，控制对焦马达将镜头移动到目标位置。
具体地，在电子设备100通过驱动芯片，控制对焦马达移动镜头的过程中，驱动芯片在目标电压的驱动下，可以根据电子设备100给定的参数，例如code值，向对焦马达输出对应的电流，对焦马达在该一定的电流的作用下，产生推力推动镜头，使镜头移动到一定的位置，并且，在闭环工作模式下，电子设备100还可以根据镜头移动的位置，反向调整对焦马达产生的推力，即调整驱动电压给对焦马达施加的电流大小，使镜头精确地移动并保持在目标位置。
在一些实施方式中，在电子设备100移动镜头之前，电子设备100可以根据该目标电压与当前驱动芯片的驱动电压是否相同，来确定是否需要调整驱动芯片的驱动电压。其中，如果该目标电压与当前驱动芯片的驱动电压相同，则不需要调整驱动芯片的驱动电压，否则，需要将驱动芯片的驱动电压调整为目标电压。
应理解，如果当前为一次对焦过程中，第一次确定目标电压，则当前驱动芯片的驱动电压为启动摄像头时，驱动芯片的初始电压，如果不是第一次确定目标电压，则当前驱动芯片的驱动电压为上一次移动镜头时确定的目标电压。
具体实现中，当电子设备100需要调整驱动芯片的驱动电压时，示例性地，参见图2，电子设备100可以更改电源管理模块与驱动芯片1连接的引脚，更改电源管理模块向驱动芯片1提供的电压。例如，将驱动芯片的驱动电压从高电压调整为低电压。
进一步地，在一些实施方式中，在电子设备100将驱动芯片的驱动电压调整为目标电压的同时，电子设备100还可以根据该目标电压，更改驱动芯片的比例积分微分(Proportion Integration Differentiation，PID)参数。该PID参数预存在驱动芯片的寄存器中，为对焦马达在闭环工作模式下，根据对焦马达移动镜头位置的误差调整镜头位置时所使用的参数。电子设备100可以根据该PID参数计算镜头调整的位置。
在对焦马达推动镜头的过程中，由于各种因素的影响，例如负载变化、电压变化、惯性原因等等，会出现即使驱动芯片给对焦马达一定的电流，使其产生推力推动镜头，镜头到达的位置与理想状态下的目标位置可能会存在一定的误差，造成镜头位置存在误差，或者镜头无法保持在稳定的位置。
因此，为了提高镜头移动的精度，在推动镜片的过程中，可以使对焦马达工作在闭环模式。在闭环模式下，对焦马达控制镜头移动的过程中，可以将镜头基于对焦马达施加的推力下所移动的实际位置作为反馈量，反向调整对焦马达的推力，从而调整镜头移动的位置，使镜头的移动更加精准。示例性地，可以通过霍尔传感器获取镜头移动的实际位置。例如，当镜头在对焦马达施加推力1的作用下，移动到A位置，该A位置超过了理想状态下的目标位置，那么，驱动芯片可以控制对焦马达减小推力，以小于推力1的推力2推动镜头，使镜头移动到B位置，如果该B位置未达到理想状态下的目标位置，那么，驱动芯片可以再控制对焦马达增大推力，以大于推力2的推力3推动镜头，从而使镜头移动并保持在该理想状态下的目标位置。
具体地，电子设备100可以利用该PID参数计算在微调对焦马达推力，使镜头移动到理想状态下的目标位置的过程中，驱动芯片根据实际位置以及理想状态下的目标位置，计算得到下次微调时，向对焦马达下发的调整量。其中，PID参数包括：P(比例)、I(积分)、D(微分)三个值，其中P值用于使镜头移动过程中快速到达目标位置，I值用于消除目标位置与实际位置的误差，D值用于抑制位置的振荡。
可以看出，该PID参数可用于在驱动芯片控制对焦马达移动镜头的过程中，提高镜头移动的精度，加快自动对焦过程中，镜头移动到目标位置的速度。
由于该PID参数与驱动芯片的驱动电压有关，当驱动芯片的驱动电压需要调整时，驱动芯片内部存储的该PID参数也需要同步基于目标电压进行调整。
具体地，电子设备100可以根据目标电压以及对焦马达的类型来确定该PID参数。其中，电子设备100可以预存有电压、马达类型与PID参数的映射表，电子设备100可以通过该映射表查找到在当前目标电压以及该马达类型下，所对应的PID参数。
示例性地，表1示出了一种电压、马达类型与PID参数的映射表。
表1
从表1可以看出，假设当前的目标电压为电压A，对焦马达的马达类型为类型1，则可以确定PID参数为PID_A1。电压A和电压B可以依据电压的大小分别对应前述提及的高电压和低电压。
应理解，表1只是示例性举例，不构成对本申请实施例的限制，例如，映射表中还可以包含更多的电压值，以及更多或更少的马达类型，其中，电压值的数量可以与前述镜头的位置范围所划分的电压数量相对应，例如，镜头的位置范围划分出三个电压等级：第一范围对应电压A，第二范围对应电压B，第三范围对应电压C，则表1所示的映射表中应包含电压A、B、C所分别对应的PID参数。
可以理解的时，当对焦马达工作不工作在闭环模式时，对焦马达中可以不存在PID参数，进一步，也不存在在需要调整驱动芯片的驱动电压时，同步调整该PID参数。
另外，需要注意的是，电子设备100在通过摄像头采集图像的同时，也可以实时显示该摄像头采集的图像，在电子设备100不断调整镜头的位置的过程中，电子设备100可以显示清晰度不断变化的图像。以前述提及的反差对焦法为例，电子设备100在将镜头从其可移动范围的一端移动到另一端，并回到清晰点最高时镜头所在的位置的过程中，电子设备100可以显示清晰度从模糊到清晰，清晰到模糊，再最终回到清晰的图像。
S106.电子设备100判断是否结束镜头位置的调整。
在手动对焦的过程中，电子设备100可以根据是否接收到用户再次调整镜头位置的操作，来判断电子设备100是否结束镜头位置的调整。具体地，在电子设备100根据用户输入的镜头位置，将镜头调整到目标位置之后，如果电子设备100再次接收到用户输入的镜头位置，则电子设备再次根据用户输入的镜头位置，使驱动芯片在与该镜头位置所对应的驱动电压的驱动下，控制对焦马达将镜头移动到该用户输入的镜 头位置，判断是否结束镜头位置的调整，并以此类推。
也就是说，在手动对焦过程中，电子设备100可以在先后接收到用户输入的多个镜头位置的过程中，依次根据这多个镜头位置，重复执行步骤S103-S106，直到用户结束手动对焦为止。
在自动对焦的过程中，电子设备100可以根据是否找到图像清晰度最高时所对应的镜头位置，来判断是否结束镜头位置的调整。具体地，当电子设备100找到图像清晰度最高时所对应的镜头位置，则结束镜头位置的调整，完成此次自动对焦，否则，电子设备100继续调整镜头位置，并使驱动芯片在于该镜头位置所对应的驱动电压的驱动下，控制对焦马达将镜头移动到该镜头位置，直到电子设备100找到图像清晰度最高时所对应的镜头位置。
另外，在电子设备100找到图像清晰度最高时所对应的镜头位置(例如第二位置)后，电子设备100可以持续提供一个电压(例如第四驱动电压)给驱动芯片，以使得驱动芯片能够控制对焦马达，将镜头保持在该图像清晰度最高时所对应的位置，直到电子设备100需要再次移动镜头的位置，例如进行手动对焦或自动对焦或关闭摄像头，将镜头调整到起点位置。其中，由于摩擦力的影响，该第四驱动芯片可以小于对焦马达将镜头推动到该清晰度最高所对应的位置时，驱动芯片的驱动电压。
也就是说，在自动对焦过程中，电子设备100可以通过不断调整镜头的位置，寻找图像清晰度最高时对应的镜头位置，即重复执行步骤S103-S106，直到电子设备100寻找到图像清晰度最高时对应的镜头位置为止，结束自动对焦。
综上所述，如果电子设备100判断不结束镜头的调整，则电子设备100执行步骤S103，否则，电子设备100执行步骤S107。
S107.电子设备100停止对驱动芯片的驱动电压的调整。
当此次对焦完成后，电子设备100可以停止调整驱动芯片的驱动电压，使对焦马达保持当前对镜头施加的推力，不再更改镜头的位置。这样，电子设备100可以持续获取到镜头保持在当前位置时，摄像头采集的图像。
应理解，在完成对焦后，如果图像的清晰度再次发生变化，电子设备100也可以再次接收到用户手动对焦的操作，再次执行步骤S103-S106，或者，电子设备100可以重复执行步骤S103-S106，启动对图像的自动对焦，调整图像的清晰度，直到图像的清晰度达到要求。
总的来说，在对焦过程中，电子设备100可以根据镜头需要移动的目标位置，动态调整驱动芯片的驱动电压，当镜头移动到目标位置需要的推力较小时，驱动电压较低，当镜头移动到目标位置需要的推力较大时，驱动电压较高。这样，可以避免驱动芯片的驱动电压一直保持在高电压，尽可能地减少了对焦过程中，驱动芯片的功耗，进而改善了当前正在工作的摄像头模组的功耗，延长了电子设备100在使用摄像头过程中的待机时间。
实施例(二)
图6为本申请实施例提供的调整光圈所涉及到的示意图。
从图6可以看出，被拍摄物的反射光透过摄像头中的镜头，到达感光芯片上进行成像，进而呈现为用户能够在设备中查看到的图像。光圈的调整，可以改变光圈的孔径大小，调整镜头的进光量，进而改变图像的显示效果，例如图像的亮度、景深等等。其中，当光圈的孔径越大，进光量越大，图像的亮度越高，景深越浅(背景越模糊)，当光圈的孔径越小，进光量越小，图像的亮度越低，景深越深(背景越清晰)。
其中，可以通过光圈马达来驱动光圈叶片的移动，进而改变光圈的孔径大小。本申请实施例提供的电压调整方法能够根据光圈是否需要调整，动态调整光圈马达的驱动芯片的驱动电压。其中，在调整光圈时，驱动芯片的驱动电压较大，在没有调整光圈时，驱动芯片的驱动电压较小。
图7为本申请实施例提供的另一种电压调整方法的流程示意图。
如图7所示，该方法包括：
S201.电子设备100启动摄像头，该摄像头中的光圈处于初始光圈值，驱动芯片的驱动电压处于低电压。
电子设备100的摄像头中可以包括：镜头、光圈、光圈马达、光圈马达的驱动芯片、感光芯片等等组件。其中，光圈马达的驱动芯片可以驱动光圈马达，控制对焦马达移动光圈中的叶片，进而改变光圈大小，改变感光芯片上捕获的光量，改变摄像头采集的图像的显示效果。具体关于镜头、光圈、光圈马达、光圈马达的驱动芯片以及感光芯片的描述可以参见前述图1A中关于镜头193A、光圈193B、光圈马达193D、 驱动芯片193E、感光芯片193F的相关内容，这里不再赘述。
光圈值用于表征光圈的孔径大小，其中，光圈值可以通过F来表示，例如，F/1.4表示光圈值为1.4。其中，F数越大，光圈越小，F数越小，光圈越大。
图8示例性示出了电子设备100中包含的光圈值。如图8所示，电子设备100可以包括：F/2、F/2.8、F/4、F/5.6、F/8、F/11、F/16、F/22这八种光圈值。按照上述数值的顺序，光圈大小逐渐减小，其中，F/2对应最大光圈，F/22对应最小光圈。
应理解，图8只是示例性举例，不构成对本申请实施例的限制。
电子设备100可以在以下两种情况下启动摄像头：
1)电子设备100可以在启动拍摄功能时，启动摄像头
2)电子设备100可以在切换摄像头时，启动切换后的摄像头
具体关于电子设备100启动摄像头的时机可以参见前述步骤S101中的相关内容，这里不再赘述。
其中，在启动摄像头之后，该摄像头中的光圈处于初始光圈值，光圈马达的驱动芯片的驱动电压处于低电压。其中，该初始光圈可以为预设的光圈值，例如，在电子设备100启动摄像头时，光圈值默认为F2.8。示例性地，该低电压可以为预设的电压，例如，1.8V。本申请实施例对该初始光圈值和初始电压不作限制。
在本申请实施例中，该低电压还可以称为第三驱动电压。
S202.电子设备100通过摄像头采集图像。
该图像具体为被拍摄物的反射光透过摄像头中的镜头，在感光芯片上成像并经过其他组件，例如ISP的进一步处理，包括：线性校正、噪点去除、换点修补、颜色插值、白平衡校正等等，得到的图像。
应理解，电子设备100通过摄像头采集图像会在电子设备100使用摄像头的过程中持续执行。其中，电子设备100在调整光圈之后，也一直在通过摄像头执行图像得采集，换句话说，在调整光圈的过程中，电子设备100可以获取到摄像头在光圈调整前和光圈调整后采集的图像。另外，在电子设备100启动摄像头之后，电子设备100可以在用户界面，例如预览界面，或者取景器中实时显示摄像头采集的图像。
S203.电子设备100确定目标光圈值。
电子设备100可以在以下两种情况下触发确定目标光圈值：
1)电子设备100检测到用户调整光圈的操作，触发确定目标光圈值
该用户操作可以为调整光圈值的操作，示例性地，该用户操作可以为作用于用户界面中调整光圈参数的控件的操作，或者，该用户操作也可以为作用于电子设备100上的光圈值对应的物理按键或滚轮的操作。
这种情况下，电子设备100可以根据该用户操作确定用户设置的目标光圈值。
2)电子设备100在启动自动曝光时，触发确定目标光圈值
自动曝光是指电子设备100自动调整摄像头采集图像时的曝光参数，使图像达到一个合理的灰度范围，即图像的亮度等于阈值，避免图像过曝或欠曝。其中，该合理的灰度范围可以是指18％的中间灰度值。其中，曝光参数包括：光圈值、快门速度和亮度增益。
在自动曝光算法中，电子设备100可以通过查表法、迭代法或数值统计法等等方法调整曝光参数。示例性地，当电子设备100通过查表法调整曝光参数时，电子设备100可以预存有一张曝光参数与图像亮度的查找表，电子设备100可以根据当前图像的亮度找到合适的曝光参数，进而得到目标光圈值，其中，摄像头在该合适的曝光参数下采集的图像的亮度等于阈值。应理解，本申请实施例对自动曝光过程中，确定目标光圈值的方法不作限制。
对于光圈值而言，在自动曝光过程中，电子设备100可以根据当前图像的亮度来确定目标光圈值。具体地，当当前图像的亮度小于阈值时，则需要增大光圈，即在初始光圈值的基础上降低光圈值，增加进光量，以使得图像亮度等于阈值，则此时，目标光圈值小于初始光圈值。当当前图像的亮度大于阈值时，则需要减小光圈，即在初始光圈值的基础上增大光圈值，减少进光量，以使得图像亮度等于阈值，则此时，目标光圈值大于初始光圈值。
其中，图像的亮度是指画面的明亮程度。电子设备100可以通过计算图像在各个通道的亮度的均值来确定图像的亮度，或者，将图像转为灰度图像，将像素平均值作为图像的亮度。应理解，本申请实施例对计算图像的亮度的方式不作限制。
示例性地，电子设备100可以在刚启动拍摄功能时，触发自动曝光，或者，电子设备100可以在检测 到周围环境的光照发生变化时，触发自动曝光，或者，电子设备100可以在切换摄像头时，触发自动曝光等等。本申请实施例对电子设备100触发自动曝光的时机不作限制。
应理解，本申请实施例中，仅重点描述了自动曝光算法中对光圈大小的调整，但本申请方案在实际自动曝光过程中，还可以调整快门速度以及亮度增益。换句话说，在计算曝光参数中，电子设备100除了根据图像的亮度确定光圈值之外，还会计算得到快门速度以及亮度增益，并且在调整光圈大小的同时，根据计算得到的快门速度以及亮度增益，调整快门速度和亮度增益，使得图像的亮度等于阈值。
在本申请实施例中，目标光圈值还可以被称为第一值。
S204.电子设备100根据该目标光圈值确定光圈马达的工作模式。
光圈马达存在两种工作模式：开环模式、闭环模式。
光圈值为最大值或最小值时，光圈马达工作在开环模式。具体地，当电子设备100确定目标光圈值为最大值或最小值时，电子设备100将光圈马达的工作模式确定为开环模式，使光圈马达在开环模式下将光圈调整到最大光圈或最小光圈。
那么，在开环模式下，光圈马达需要基于给定的电流，在该电流的作用下产生一定的推力推动光圈的叶片，即可将光圈调整到最大光圈或最小光圈。
光圈值介于最大值和最小值之间时，光圈马达工作在闭环模式。具体地，当电子设备100确定目标光圈值介于最大值和最小值之间时，电子设备100将光圈马达的工作模式确定为闭环模式，使光圈马达在闭环模式下将光圈的光圈值调整到目标光圈值。
在闭环模式下，驱动芯片可以将光圈马达推动光圈叶片的位置作为反馈量，反向调整光圈马达的推力，将光圈叶片更加精准地推动到该目标光圈值所对应的目标位置。例如，当光圈马达在推力1的作用下推动光圈叶片，使光圈叶片移动的位置超过了目标位置，则降低光圈马达的推力，以小于推力1的推力推动光圈叶片，使光圈叶片靠近或移动到该目标位置，当光圈马达在推力2的作用下推动光圈叶片，使光圈叶片移动的位置未达到该目标位置，则提高光圈马达的推力，使光圈马达以大于推力2的推力推动光圈叶片，依次类推，使光圈叶片到达并保持在该目标位置。
那么，在闭环模式下，光圈马达需要基于给定的光圈叶片的目标位置，在驱动芯片提供的动态变化的电流下，将光圈叶片推动到目标位置，即可将光圈值调整到目标光圈值。
这里，由于光圈叶片的位置改变由马达对其施加推力使其移动，光圈叶片的目标位置还可以是指光圈马达的马达行程，本申请实施例对该名称不作限制。
也就是说，目标光圈值决定了光圈马达的工作模式，具体地，当目标光圈值为光圈的最大值或最小值时，电子设备100确定光圈马达的工作模式为开环模式，否则，光圈马达的工作模式为闭环模式。
另外，需要注意的是，由于开环模式下光圈马达移动的精度没有闭环模式下光圈马达移动的精度高，该光圈的实际物理结构中，在光圈调整为最大光圈和最小光圈处设置有卡槽，在光圈叶片移动过程中，可以通过该卡槽来从物理上使光圈叶片的移动更加精准。
应理解，光圈马达也可以仅包括闭环工作模式，这时，在任何一个目标光圈值下，光圈马达都在闭环工作模式下改变光圈的孔径大小，使光圈值调整为目标光圈值，或者，光圈马达也可以仅包括开环工作模式，这时，在任何一个目标光圈值下，光圈马达都在开环工作模式下改变光圈的孔径大小，使光圈值调整为目标光圈值。本申请实施例对光圈马达的工作模式以及不同工作模式下光圈调整的目标光圈值的大小不作限制。
S205.电子设备100判断该工作模式是否为开环模式。
其中，当光圈马达的工作模式为开环模式时，则电子设备100执行步骤S206，否则，电子设备100执行步骤S210。
可以理解的是，步骤S204和步骤S205为可选的步骤。当电子设备100中的光圈仅包括开环模式时，电子设备100可以在执行完步骤S203后，直接执行步骤S206；或者，当电子设备100中的光圈仅包括闭环模式时，电子设备100可以在执行完步骤S203之后，直接执行步骤S210；或者，当电子设备100中的光圈包括开环和闭环两种工作模式时，则电子设备100在执行完步骤S203之后，还会执行步骤S204，确定光圈的工作模式，并根据光圈的工作模式，选择执行步骤S206-S209，或步骤S210-S213。
S206.电子设备100根据目标光圈值确定光圈马达分别在高电压和低电压下的电流。
该高电压和低电压下的电流为驱动芯片分别在高电压和低电压的驱动下，输送给光圈马达的电流。该高电压下的电流可以使光圈马达将光圈叶片移动到一定的位置，该低电压下的电流可以使光圈叶片保持在该位置。
由于在开环模式下，对焦马达可以基于驱动芯片提供的电流，产生一定的推力推动光圈叶片，使其到达一定的位置，使得光圈的光圈值调整为该电流下对应的光圈值。进一步地，在光圈叶片在到达一定的位置后，由于摩擦力的影响，对焦马达可以提供一个更小的推力，使光圈叶片仍然可以保持在当前到达的位置上，保证光圈值保持不变。换句话说，在光圈调整完成后，驱动芯片可以降低提供给对焦马达的电流。可以看出，驱动芯片降低提供给对焦马达的电流，这样，可以降低驱动芯片自身的电流，进一步降低驱动芯片的功耗。
因此，在光圈调整结束后，将驱动芯片的电压由高电压降低为低电压时，电子设备还可以同时将驱动芯片提供给光圈马达的电流从高电压下的电流调整为低电压下的电流。
具体地，电子设备100可以预存有光圈值、驱动芯片的电压以及光圈马达的电流的映射表，该映射表指示了不同光圈值，以及不同的驱动芯片的电压下对应的光圈马达的电流。示例性地，表2示出了一种光圈值、驱动芯片的电压以及电流的映射表。
表2
其中，表2中的电流和电压为推动光圈叶片移动时，光圈马达的电流和驱动芯片的电压，驱动芯片在某个电压的驱动下，向光圈马达输入某个电流，可以使光圈马达向光圈叶片施加一定的推力，将光圈叶片移动到一定位置，使得光圈值达到对应的某个值。例如，驱动芯片在电压A的驱动下，向光圈马达提供电流大小为IA1的电流，可以使得光圈的光圈值调整到F1。
另外，电压A和电压B可以依据其电压的大小，分别表示高电压和低电压，用于分别表示驱动芯片在光圈调整时，和未调整光圈时的电压。从表2可以看出，在确定目标光圈值之后，可以依据该目标光圈值，查找到该目标光圈值所对应的高电压下的电流和低电压下的电流。
应理解，该光圈值、驱动芯片的电压以及光圈马达的电流的映射表可以为开发人员预先通过在将光圈调整到一定光圈值后，通过保持光圈叶片的位置不变，测试得到的驱动芯片在不同电压的驱动下，向光圈马达输送的电流。另外，当对焦马达调整光圈，使光圈值调整为某一值时，对焦马达所需的电流为该驱动芯片在一定电压的驱动下能够提供的最大电流时，则电子设备100可以无需存储该光圈值下，该电压所对应的电流。那么，在实际驱动芯片在某一电压的驱动下，可以默认提供该电压下所能提供的最大电流给光圈马达。
另外，在具体实现中，该电流可以表现为驱动芯片能够识别的code值，不同code值用于对应不同的电流大小，电子设备100可以根据目标光圈值确定高电压和低电压下的code值，驱动芯片可以根据该code值，来确定向光圈马达输送的电流大小。具体关于该code值的描述类似于步骤S103中提及的电子设备100确定用于指示镜头的目标位置的参数code值，可以对应参考，这里不再赘述。
在一些实施方式中，电子设备100也可以不确定低电压下的电流，仅确定高电压下的电流，这时，驱动芯片可以在光圈调整完成后，将驱动芯片的电压调整为低电压时，默认提供低电压下，驱动芯片能够提供的最大电流给光圈马达，使光圈马达在该最大电流的作用下仍能保持光圈叶片的位置保持不变。
在本申请实施例中，该高电压下的电流还可以被称为第三电流，该低电压下的电流还可以被称为第四电流。
S207.电子设备100将驱动芯片的驱动电压调整为高电压。
在调整光圈的大小之前，先将光圈马达的驱动芯片的驱动电压调整为高电压。其中，驱动芯片可以在驱动光圈马达之前，将升高电压的指示信息传递给电源管理模块，由电源管理模块升高提供给驱动芯片的电压。
示例性地，参见图2，电源管理模块可以将驱动芯片2连接的电压引脚，由低电压引脚切换为高电压引脚，使电源管理模块提供给驱动芯片2的电压由低电压调整为高电压。
在一些实施方式中，光圈值不同时，该高电压的值不同。具体地，当目标光圈值为第一值时，该高电压为第一电压，当目标光圈值为第二值时，该高电压为第二电压，其中，当目标光圈值调整到第一值比调整到第二值时，光圈马达施加的推力大，则第一电压大于第二电压。这样，电子设备100可以在调整光圈大小时，根据调整光圈施加的推力，动态调整驱动芯片在调整光圈时的驱动电压的大小，例如，当光圈值越小，施加的推力越小，则调整光圈时的驱动芯片的驱动电压越低。
可以理解的是，当光圈值不同时，驱动芯片在每次调整光圈时都使用相同的高电压作为驱动电压，可以省去光圈调整前，根据光圈值确定驱动芯片的驱动电压的时间，加快光圈调整的速度。那么，在这种情况下，该高电压需要保证在调整电子设备100的光圈的任意一个光圈值时，该驱动芯片提供给光圈马达的电流，能够满足调整过程中，光圈马达所需提供的足够大小的推力。例如，当对焦马达为中置马达，对焦马达将光圈调整为最大光圈或最小光圈时所施加的推力最大，则该高电压下驱动芯片能够提供给光圈马达的最大电流，应能保证光圈马达能够将光圈调整为最大光圈或最小光圈。
在本申请实施例中，该高电压还可以被称为第一驱动电压。
S208.电子设备100使驱动芯片在高电压的驱动下，向光圈马达输送该高电压下的电流，控制光圈马达将光圈的光圈值调整为目标光圈值。
光圈马达可以在该高电压下的电流的作用下，产生一定的推力(例如第一推力)推动光圈叶片的位置，使光圈叶片到达一定的位置，使得光圈的光圈值调整为目标光圈值。
S209.电子设备100将驱动芯片的驱动电压调整为低电压，并将驱动芯片输送给光圈马达的电流调整为低电压下的电流。
其中，当驱动芯片处于该低电压的驱动时，驱动芯片提供给光圈马达的电流，能够使光圈马达施加给光圈叶片的推力(例如第二推力)保证该光圈叶片的位置保持不变。
在光圈的大小调整完成后，电子设备100可以将驱动芯片的驱动电压调回低电压，降低驱动芯片的功耗。进一步地，驱动芯片还可以将光圈马达的电流调整为该低电压下的电流，使光圈马达能够在该电流的作用下，在保持光圈叶片的位置不变的情况下，进一步降低驱动芯片的功耗。
可选地，电子设备100也可以仅将驱动芯片的驱动电压调整为低电压，这时，驱动芯片在低电压的作用下，可以向光圈马达默认提供该低电压下驱动芯片能够提供的最大电流。
在本申请实施例中，此处的低电压还可以被称为第二驱动电压。
S210.电子设备100根据该目标光圈值确定光圈叶片的目标位置。
在闭环模式下，电子设备100可以根据光圈叶片移动的位置调整对焦马达施加给光圈叶片的推力，使光圈叶片能够移动并保持在该目标大小所对应的目标位置。
因此，电子设备100可以预存有光圈值与光圈叶片的位置的映射表，该映射表指示了光圈值与光圈叶片位置的对应关系。在电子设备100确定光圈叶片的目标位置时，电子设备100可以通过该映射表，确定该目标光圈值所对应的光圈叶片的目标位置。其中，该映射表可以为开发人员通过测试光圈在不同光圈值下光圈叶片的位置得到。
应理解，当光圈叶片位于目标位置时，可以使得光圈孔径大小处于目标大小(例如第一大小)。在本申请实施例中，根据目标光圈值确定光圈叶片的目标位置，相当于确定光圈孔径的目标大小，类似的，控制光圈叶片移动到目标位置，相当于控制光圈孔径调整为目标大小。也就是说，光圈叶片的位置与光圈孔径的大小可以同等替换，以下不再赘述。
S211.电子设备100将驱动芯片的驱动电压调整为高电压。
类似于步骤S207中在调整光圈的大小之前，先将光圈马达的驱动芯片的驱动电压调整为高电压。具体关于将驱动芯片的驱动电压调整为高电压的描述可以参见步骤S207的相关描述，这里不再赘述。
S212.电子设备100使驱动芯片在高电压的驱动下，控制光圈马达将光圈叶片移动到目标位置，使得光圈的光圈值调整为目标光圈值。
驱动芯片在高电压的驱动下，向光圈马达输出电流，光圈马达在电流的作用下产生推力推动光圈叶片，驱动芯片根据光圈叶片移动的位置调整向光圈马达输出的电流，进而调整光圈叶片移动的位置，直到光圈叶片移动到目标位置，使得光圈的光圈值调整为目标光圈值。
也就是说，驱动芯片可以提供一个或多个电流给光圈马达，以驱动光圈马达将光圈也拼移动到目标位置，使得光圈的光圈值调整为目标光圈值。其中，当驱动芯片提供多个电流来控制光圈马达施加的推力时，其中一个电流为驱动芯片根据前一次提供给光圈马达时，光圈马达对光圈的调整效果来确定的。
S213.电子设备100将驱动芯片的驱动电压调整为低电压。
在光圈的大小调整完成后，电子设备100可以将驱动芯片的驱动电压调整为低电压，降低驱动芯片的功耗。
其中，当驱动芯片处于该低电压的驱动时，驱动芯片提供给光圈马达的电流，能够使光圈马达施加给光圈叶片的推力保证该光圈叶片的位置保持不变。
另外，由于在闭环模式下，电子设备100可以根据光圈叶片移动的位置反向调整光圈马达的推力，保证光圈叶片的位置保持不变，因此，在电子设备100将驱动芯片的驱动电压调整为低电压时，即使驱动芯片的电压改变导致驱动芯片能够提供给光圈马达的电流发生改变，驱动芯片也能够根据光圈叶片所在的位置，自行动态调整提供给光圈马达的电流，即驱动芯片提供一个或多个电流给光圈马达，使光圈马达在该电流的作用下施加给光圈叶片的推力，仍能使光圈叶片的位置保持不变。
由于电子设备100在摄像头启动后一直处于通过摄像头采集图像的状态，在光圈调整后，电子设备100可以获取到光圈调整后的摄像头采集的图像。另外，由于电子设备100可以实时显示摄像头采集的图像，在调整光圈的过程中，电子设备100可以显示图像的显示效果，例如亮度、景深跟随光圈的改变而发生变化的图像。
其中，在手动调整光圈的场景中，该光圈调整后的摄像头采集的图像为根据用户设置的光圈值所对应的图像，用户可以在调整光圈过程中，查看到亮度或景深跟随用户对光圈的调整而发生变化的图像。在自动曝光场景中，该光圈调整后的摄像头采集的图像为亮度等于阈值的图像，该图像既不会太暗也不会太亮，真实还原了人眼观察得到的景物的色彩和光照，用户可以通过电子设备100查看到图像的亮度自动变化的图像。
总的来说，在光圈调整过程中，电子设备100可以根据光圈是否调整，动态调整光圈马达的驱动芯片的电压，在光圈不需要移动时，降低驱动芯片的电压，仅在光圈调整时，升高驱动芯片的电压，这样，可以避免驱动芯片的驱动电压一直保持高电压，尽可能地减少自动曝光过程中，驱动芯片的功耗，进而改善了当前正在工作的摄像头模组的功耗，延长了电子设备100在使用摄像头过程中的待机时间。
应理解，上述方法实施例中的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
本申请还提供一种电子设备，该电子设备可以包括：存储器和处理器。其中，存储器可用于存储计算机程序；处理器可用于调用所述存储器中的计算机程序，以使得该电子设备执行上述任意一个实施例中电子设备100执行的方法。
本申请还提供了一种芯片系统，所述芯片系统包括至少一个处理器，用于实现上述任一个实施例中电子设备100执行的方法中所涉及的功能。
在一种可能的设计中，所述芯片系统还包括存储器，所述存储器用于保存程序指令和数据，存储器位于处理器之内或处理器之外。
该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
可选地，该芯片系统中的处理器可以为一个或多个。该处理器可以通过硬件实现也可以通过软件实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等。当通过软件实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现。
可选地，该芯片系统中的存储器也可以为一个或多个。该存储器可以与处理器集成在一起，也可以和处理器分离设置，本申请实施例并不限定。示例性地，存储器可以是非瞬时性处理器，例如只读存储器ROM，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型，以及存储器与处理器的设置方式不作具体限定。
示例性地，该芯片系统可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
本申请还提供一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述任一个实施例中电子设备100任意一个执行的方法。
本申请还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)。当所述计算机程序被运行时，使得计算机执行上述任一个实施例中电子设备100任意一个执行的方法。
应理解，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(AP 800plication specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
另外，本申请实施例还提供一种装置。该装置具体可以是组件或模块，该装置可包括相连的一个或多个处理器和存储器。其中，存储器用于存储计算机程序。当该计算机程序被一个或多个处理器执行时，使得装置执行上述各方法实施例中的方法。
其中，本申请实施例提供的装置、计算机可读存储介质、计算机程序产品或芯片均用于执行上文所提供的对应的方法。因此，其所能达到的有益效果可参考上文所提供的对应的方法中的有益效果，此处不再赘述。
本申请的各实施方式可以任意进行组合，以实现不同的技术效果。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，该流程可以由计算机程序来指令相关的硬件完成，该程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。而前述的存储介质包括：ROM或随机存储记忆体RAM、磁碟或者光盘等各种可存储程序代码的介质。
总之，以上所述仅为本发明技术方案的实施例而已，并非用于限定本发明的保护范围。凡根据本发明的揭露，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (24)

  1. 一种电压调整方法，其特征在于，所述方法应用于包括摄像头的电子设备，所述摄像头包括镜头、马达和驱动芯片，所述方法包括：
    所述电子设备启动所述摄像头，并通过所述摄像头采集图像；
    所述电子设备提供第一驱动电压给所述驱动芯片，以驱动所述马达将所述镜头移动到第一位置；
    所述电子设备提供第二驱动电压给所述驱动芯片，以驱动所述马达将所述镜头移动到第二位置；所述第二驱动电压不同于所述第一驱动电压，所述第二位置不同于所述第一位置。
  2. 根据权利要求1所述的方法，其特征在于，所述第二驱动电压大于所述第一驱动电压，所述第二位置和第三位置之间的距离，大于，所述第一位置和第三位置之间的距离；所述第三位置为所述马达未移动所述镜头时，所述镜头所处的位置。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述电子设备提供第三驱动电压给所述驱动芯片，以驱动所述马达将所述镜头移动到所述第一位置；
    其中，所述电子设备提供所述第三驱动电压时的姿态，不同于，所述电子设备提供所述第一驱动电压时的姿态；所述第三驱动电压不同于所述第一驱动电压。
  4. 根据权利要求3所述的方法，其特征在于，所述电子设备的姿态是指所述镜头的平面与水平面的夹角，所述电子设备提供所述第三驱动电压时，所述镜头的平面与水平面处于第一夹角，所述电子设备提供所述第一驱动电压时，所述镜头的平面与水平面处于第二夹角；所述第一夹角小于所述第二夹角，所述第三驱动电压大于所述第一驱动电压。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述摄像头在所述镜头位于所述第二位置时所采集的图像的清晰度，高于，所述摄像头在所述镜头位于所述第二位置以外的其他位置时所采集的图像的清晰度；
    所述电子设备提供第二驱动电压给所述驱动芯片，以驱动所述马达将所述镜头移动到第二位置之后，所述方法还包括：
    所述电子设备持续提供第四驱动电压给所述驱动芯片，以驱动所述马达将所述镜头保持在第二位置。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述第一位置和所述第二位置为根据用户输入的调整所述镜头的位置的操作确定。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述电子设备通过所述摄像头采集图像之后，所述方法还包括：
    所述电子设备显示通过所述摄像头采集的图像，其中，所述电子设备在镜头处于所述第一位置时采集的图像和镜头处于所述第二位置时采集的图像的清晰度不同。
  8. 根据权利要求1-7任一项所述的方法，其特征在于，所述方法还包括：
    所述电子设备在启动所述摄像头时，提供第四驱动电压给所述驱动芯片，以驱动所述马达将所述镜头移动到第四位置；所述第四驱动电压为预设电压。
  9. 一种电压调整方法，其特征在于，所述方法应用于包括摄像头的电子设备，所述摄像头包括光圈、马达和驱动芯片，所述方法包括：
    所述电子设备启动所述摄像头，并通过所述摄像头采集图像；
    所述电子设备提供第一驱动电压给所述驱动芯片，以驱动所述马达改变所述光圈的孔径大小，使得所述光圈的光圈值调整为第一值；
    所述电子设备将所述第一驱动电压调整为第二驱动电压；所述第一驱动电压大于所述第二驱动电压。
  10. 根据权利要求9所述的方法，其特征在于，所述电子设备提供第一驱动电压给所述驱动芯片，具体 包括：
    所述电子设备将提供给所述驱动芯片的电压由第三驱动电压调整为第一驱动电压，所述第三驱动电压小于所述第一驱动电压。
  11. 根据权利要求9或10所述的方法，其特征在于，所述电子设备提供第一驱动电压给所述驱动芯片，以驱动所述马达改变所述光圈的孔径大小，使得所述光圈的光圈值调整为第一值，具体包括：
    所述电子设备提供第一驱动电压给所述驱动芯片，并通过所述驱动芯片提供一个或多个电流给所述马达，以驱动所述马达将所述光圈的孔径大小调整为第一大小，使得所述光圈的光圈值调整为第一值；
    其中，所述多个电流包括第一电流和第二电流，所述第二电流为根据所述马达在所述第一电流的作用下调整的所述光圈的孔径大小确定。
  12. 根据权利要求11所述的方法，其特征在于，所述电子设备将所述第一驱动电压调整为第二驱动电压之后，所述方法还包括：
    所述电子设备通过所述驱动芯片提供一个或多个电流给所述马达，以驱动所述马达将所述光圈的孔径大小保持为所述第一大小。
  13. 根据权利要求11或12所述的方法，其特征在于，所述第一值为所述光圈除最大光圈值和最小光圈值之外的光圈值。
  14. 根据权利要求9或10所述的方法，其特征在于，所述电子设备提供第一驱动电压给所述驱动芯片，以驱动所述马达改变所述光圈的孔径大小，使得所述光圈的光圈值调整为第一值，具体包括：
    所述电子设备提供第一驱动电压给所述驱动芯片，并通过所述驱动芯片提供第三电流给所述马达，使所述马达产生第一推力改变所述光圈孔径大小，使得所述光圈的光圈值调整为第一值。
  15. 根据权利要求14所述的方法，其特征在于，所述电子设备将所述第一驱动电压调整为第二驱动电压之后，所述方法还包括：
    所述电子设备通过所述驱动芯片提供第四电流给所述马达，使所述马达在第二推力的作用下，保持所述光圈孔径大小的改变。
  16. 根据权利要求14或15所述的方法，其特征在于，所述第一值为所述光圈的最大光圈值或最小光圈值。
  17. 根据权利要求15或16所述的方法，其特征在于，所述电子设备预存有所述第三电流和/或所述第四电流。
  18. 根据权利要求9-17任一项所述的方法，其特征在于，所述第一值为所述电子设备采集的图像的亮度等于阈值时，所述光圈的光圈值。
  19. 根据权利要求9-18任一项所述的方法，其特征在于，所述方法还包括：
    所述电子设备检测到第二操作，所述第二操作用于指示所述第一值。
  20. 根据权利要求9-19任一项所述的方法，其特征在于，所述电子设备通过所述摄像头采集图像之后，所述方法还包括：
    所述电子设备显示通过所述摄像头采集的图像，其中，所述电子设备在将所述光圈值调整为所述第一值之前和调整为所述第一值之后，采集的图像的亮度和/或景深不同。
  21. 一种电子设备，其特征在于，包括摄像头，存储器，一个或多个处理器，以及一个或多个程序，其中，所述摄像头包括镜头、马达、驱动芯片；所述一个或多个处理器在执行所述一个或多个程序时，使得所述电子设备实现如权利要求1至8任一项所述的方法。
  22. 一种电子设备，其特征在于，包括摄像头，存储器，一个或多个处理器，以及一个或多个程序，其中，所述摄像头包括光圈、马达、驱动芯片；所述一个或多个处理器在执行所述一个或多个程序时，使得所述电子设备实现如权利要求9至20任一项所述的方法。
  23. 一种计算机可读存储介质，包括指令，其特征在于，当所述指令在电子设备上运行时，使得所述电子设备执行如权利要求1至8，或，9至20任一项所述的方法。
  24. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得计算机执行如权利要求1至8，或，9至20任一项所述的方法。
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