WO2020082970A1 - 电磁干扰控制方法及相关装置 - Google Patents

电磁干扰控制方法及相关装置 Download PDF

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Publication number
WO2020082970A1
WO2020082970A1 PCT/CN2019/107883 CN2019107883W WO2020082970A1 WO 2020082970 A1 WO2020082970 A1 WO 2020082970A1 CN 2019107883 W CN2019107883 W CN 2019107883W WO 2020082970 A1 WO2020082970 A1 WO 2020082970A1
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WIPO (PCT)
Prior art keywords
frequency
value
electronic device
display screen
detection value
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Ceased
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PCT/CN2019/107883
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English (en)
French (fr)
Inventor
蒋国强
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to EP19877421.8A priority Critical patent/EP3859982A4/en
Priority to JP2021521996A priority patent/JP7186294B2/ja
Priority to KR1020217014078A priority patent/KR102539768B1/ko
Publication of WO2020082970A1 publication Critical patent/WO2020082970A1/zh
Priority to US17/236,609 priority patent/US20210243618A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/06—Testing, supervising or monitoring using simulated traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H04B2001/7154—Interference-related aspects with means for preventing interference
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the technical field of electronic equipment, in particular to an electromagnetic interference control method and related devices.
  • Embodiments of the present application provide an electromagnetic interference control method and related devices, with a view to improving the communication stability of electronic devices in a bright screen scene.
  • an embodiment of the present application provides an electromagnetic interference control method, including:
  • the electronic device When it is detected that the electronic device is in a preset scene, detecting whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen, and the preset scene includes a bright screen scene;
  • an embodiment of the present application provides an electromagnetic interference control device, including a processing unit and a communication unit, wherein,
  • the processing unit is configured to detect whether an electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen when the electronic device is detected in a preset scene, the preset scene includes a bright screen scene; and when the detected When electromagnetic interference occurs in the electronic device, a frequency hopping switching operation is performed on the display screen mobile industry processor interface MIPI through the communication unit.
  • an embodiment of the present application provides an electronic device, including a processor, a memory, a communication interface, and one or more programs, wherein the one or more programs are stored in the memory and configured to be processed by the above
  • the above program includes instructions for performing the steps in any method of the first aspect of the embodiments of the present application.
  • an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes the computer to execute the first embodiment of the present application.
  • the computer program causes the computer to execute the first embodiment of the present application.
  • an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing the computer program, and the computer program is operable to cause the computer to execute as implemented in the present application Examples of some or all of the steps described in any method of the first aspect.
  • the computer program product may be a software installation package.
  • the electronic device when the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the preset scene includes a bright screen scene; when the electronic device is detected When electromagnetic interference occurs, the frequency hopping switching operation is performed for the display industry mobile interface MIPI. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the communication frequency of the radio frequency system, thereby improving the stability of communication in bright screen scenes.
  • FIG. 1 is an exemplary architecture diagram of a wireless communication system provided by an embodiment of the present application
  • FIG. 2 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application.
  • FIG. 3 is a schematic flowchart of another electromagnetic interference control method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another electromagnetic interference control method provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 6 is a block diagram of functional units of an electromagnetic interference control device provided by an embodiment of the present application.
  • the electronic devices involved in the embodiments of the present application may be electronic devices with data transmission capabilities, and the electronic devices may include various handheld devices with wireless communication functions, in-vehicle devices, wearable devices, computing devices, or devices connected to a wireless modem Other processing equipment, as well as various forms of user equipment (User Equipment, UE), mobile station (Mobile Station, MS), terminal equipment (terminal device), etc.
  • UE User Equipment
  • MS Mobile Station
  • terminal device terminal device
  • the electronic device 101 can be connected to the base station 103 and / or the wireless hotspot device 102.
  • a voice call service can be implemented through a mobile communication network, such as the current voice call service in LTE, electronic
  • the device 101 is connected to the wireless hotspot device 102, it can implement a voice call service through a wireless local area network, such as an IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) voice call service.
  • IP Multimedia Subsystem IP Multimedia Subsystem
  • FIG. 2 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application, which is applied to an electronic device. As shown in the figure, the electromagnetic interference control method includes:
  • Step 201 When the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen, and the preset scene includes a bright screen scene;
  • the radio frequency system when the electronic device communicates with a base station or a wireless hotspot, the radio frequency system will select different communication channels for information transmission of data, voice and other services, and each communication channel corresponds to a frequency domain resource agreed by the protocol (such as global mobile communication System (Global System for Mobile Communication, GSM) frequency band, Long Term Evolution (LTE) B8 / B20 / B28 frequency band, etc.), and from the related communication protocol, it can be known that electronic equipment can be in the same when performing different business processes
  • GSM Global System for Mobile Communication
  • LTE Long Term Evolution
  • One or more different communication channels are used during the service processing period. For example, during the cell handover process, different channels of the current home location are scanned.
  • the preset scene may specifically include a bright screen call scene, a bright screen video scene, etc., which is not limited here.
  • Step 202 When detecting that electromagnetic interference occurs in the electronic device, the electronic device performs a frequency hopping switching operation on the display industry interface MIPI.
  • the MIPI frequency of the display screen can support different frequencies or frequency bands according to chip capabilities, such as a frequency of 514.5MHz and a frequency of 512.5MHz.
  • the electronic device when the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the preset scene includes a bright screen scene; when the electronic device is detected When electromagnetic interference occurs, the frequency hopping switching operation is performed for the display industry mobile interface MIPI. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the communication frequency of the radio frequency system, thereby improving the stability of communication in bright screen scenes.
  • the electronic device detecting whether electromagnetic interference between the radio frequency system of the electronic device and the display screen includes: the electronic device acquiring at least one detection value at a first frequency and a detection value at a second frequency, The first frequency is the communication frequency of the radio frequency system, and the second frequency is the MIPI frequency of the display screen; according to at least one detection value of the first frequency and the detection value of the second frequency, the detection Whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the electronic device compares the detection value of the second frequency with the detection value of the first frequency one by one to determine whether electromagnetic interference will occur.
  • the electronic device can quickly determine whether the frequency currently used by the display MIPI will cause electromagnetic interference with any one of the detected values of the first frequency based on frequency comparison, the electromagnetic interference can be quickly located based on the real-time detected value Scene, high detection efficiency.
  • the electronic device detecting whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen according to the at least one detection value and the detection value of the second frequency includes: the electronic device Determining a first frequency set according to at least one detection value of the first frequency, the first frequency set including at least one communication frequency enabled by the radio frequency system in the preset scene; according to the second frequency The detection value determines a second frequency set, the second frequency set including the MIPI frequency enabled by the display screen in the preset scene, and at least one frequency division and / or at least one multiple of the MIPI frequency enabled Frequency; according to the first frequency set and the second frequency set, detect whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the number of different frequencies included in the first frequency set needs to be detected and determined in real time.
  • the electronic device may compare with the frequencies in the first frequency set one by one. If there is an interfering frequency, the electromagnetic interference is determined, and if it does not exist, it is determined that there is no electromagnetic interference.
  • the frequency multiplication or division of the MIPI frequency of the display screen can also interfere with devices in similar frequency bands and cause electromagnetic interference. Therefore, the frequency comparison in the first and second frequency sets can comprehensively and accurately solve the electromagnetic interference situation. Carry out testing to improve testing accuracy and comprehensiveness.
  • the electronic device performing a frequency hopping switching operation on the display screen mobile industry processor interface MIPI includes: the electronic device determining a target frequency value of the MIPI frequency of the display screen; The MIPI frequency of the display screen is adjusted to the target frequency value.
  • the determination strategy of the target frequency value of the MIPI frequency of the display screen may be various, and specific constraints may include capability support of the display chip, which is not limited here.
  • the electronic device determines that electromagnetic interference occurs, it determines the target frequency value of frequency hopping in real time, and adjusts the MIPI frequency of the display screen to the target frequency value, and relatively adjusts the communication frequency of the RF system.
  • the processing process is convenient and efficient. Low time and high stability.
  • the electronic device determining the target frequency value of the MIPI frequency of the display screen includes: the electronic device acquiring the available frequency range or available frequency value of the MIPI frequency of the display screen; acquiring the first A frequency set, the first frequency set includes at least one communication frequency enabled by the electronic device in the preset scene; according to the available frequency range or available frequency value, and the first frequency set, determining the frequency set Describe the target frequency value of the MIPI frequency of the display.
  • the target frequency value determined by the electronic device should rarely interfere with any frequency in the first frequency set.
  • the electronic device determines the target frequency value of MIPI according to the available frequency range or available frequency value of the MIPI of the display screen and the first frequency set, thereby avoiding the electronic device from being affected by radio frequency in the current preset scene
  • the system uses any frequency in the first frequency set to be disturbed by the MIPI of the display screen to improve the communication stability of the radio frequency system.
  • the electronic device adjusting the MIPI frequency of the display screen to the target frequency value includes: the electronic device acquiring the target value of the screen parameter associated with the pre-configured target frequency value ,
  • the target value is associated with a reference value, the reference value is determined by the electronic device according to a preset frame rate calculation formula and the target frequency value under a first constraint condition, the first constraint condition is the The amount of change of the frame rate of the display screen after MIPI frequency switching is less than the first preset threshold
  • the screen parameters include at least one of the following porch values in the preset frame rate calculation formula: horizontal trailing edge HBP, horizontal leading edge HFP , The vertical trailing edge VBP, the vertical leading edge VFP, the width of the vertical synchronization signal VSA, the width of the horizontal synchronization signal HAS; adjusting the value of the screen parameter to the target value, and adjusting the MIPI frequency of the display screen to the target Frequency value.
  • the preset frame rate calculation formula is the following formula:
  • FPS CLK_rate x 2x lane_num / ((height + VBP + VSA + VFP) x (weight + HBP + HFP + HSA) x bits_perpixel)
  • FPS indicates the frame rate of the display screen
  • CLK_rate indicates the MIPI frequency
  • lane_num indicates the number of channels
  • height and weight indicate the physical size of the display screen
  • VBP vertical backporch
  • VFB vertical front porch
  • VSA vertical sync active
  • HBP horizontal backporch
  • HFP horizontal frontporth
  • bits_perpixel indicates the width of RGB display data.
  • the first preset threshold may be an empirical value, which is used to ensure the stability of the content display of the display screen before and after frequency switching, such as the maximum allowable error range of the display chip of 1%.
  • the electronic device after the frequency hopping is switched on by the electronic device, some parameters of the display screen of the electronic device will be changed, and the frame rate is an important parameter index to ensure the stability of the display after the frequency hopping switching of the display device, so the electronic device
  • the target value of the screen parameter that needs to be synchronously adjusted during the frequency hopping process can be pre-determined based on the frame rate formula, thereby improving the display stability of the display screen.
  • the screen parameters include horizontal screen parameters, and the horizontal screen parameters include at least one of the following: the HBP, the HFP, and the HAS;
  • the target value is determined by the electronic device adjusting the reference value under a second constraint condition, the second constraint condition is that the amount of change in the line scan duration of the display screen after MIPI frequency switching is less than the second Preset threshold.
  • the line scan time is measured at 7.18us, and when the MIPI frequency is switched to the auxiliary frequency of 529MHz, fine-tuning is performed according to the reference value of the screen parameter, and the line scan time is measured simultaneously to determine
  • the value of the screen parameter after the fine adjustment in the scan time of 7.18us is the target value.
  • the above preset frame rate calculation formula is only a theoretical calculation formula.
  • the accuracy of this reference value is not very high, and the actual MIPI transmission frequency and the value of the screen parameter are different. Large (the difference between MHz and tens or hundreds), and the horizontal screen parameters of the display screen have a greater impact on the display stability, so consider modifying the value of the horizontal screen parameters based on the actual detection results to improve stability.
  • the target value may be equal to the reference value, that is, the adjustment The vertical porch value has no effect on the line scan duration.
  • the electronic device can modify the reference value according to the constraint condition of the line scan duration and the actual detection result, thereby improving the stability of the display screen after frequency hopping.
  • the electronic device includes a baseband processor BP and an application processor AP, the AP is connected to the Modem; the electronic device obtains at least one detection value at a first frequency and a detection value at a second frequency Including: the electronic device controlling the BP to perform the following operations: acquiring at least one detection value of the first frequency, and reporting at least one detection value of the first frequency to the AP through a preset channel; The AP performs the following operations: receiving at least one detection value of the first frequency from the BP, and acquiring a detection value of the second frequency;
  • the electronic device detecting whether electromagnetic interference has occurred in the electronic device based on the at least one detection value and the detection value of the second frequency includes: controlling the AP according to the at least one detection value and the first frequency of the first frequency The detection value of the second frequency detects whether electronic interference occurs in the electronic device.
  • the preset channel is a CCCI channel between the modem and the AP.
  • the AP and BP of the electronic device can interactively complete the detection of electromagnetic interference.
  • BP collects at least one detection value of the first frequency and sends it to the AP.
  • the AP determines the electromagnetic interference based on the MIPI frequency of the display screen detected by the local end. Because the AP has strong processing capabilities, it can quickly and efficiently obtain the detection results.
  • the electronic device includes a baseband processor BP and an application processor AP, the AP is connected to the Modem; the electronic device obtains at least one detection value at a first frequency and a detection value at a second frequency Including: controlling the BP to perform the following operations: acquiring at least one detection value of the first frequency; and receiving the detection value of the second frequency from the AP through a preset channel; controlling the AP to perform the following operations : Obtain the detection value of the second frequency, and send the detection value of the second frequency to the BP;
  • Detecting, by the electronic device, whether electromagnetic interference occurs in the electronic device based on the at least one detected value and the detected value of the second frequency including: controlling the BP based on the at least one detected value and the second frequency Detection value, to detect whether electronic interference occurs in the electronic device.
  • the AP and BP of the electronic device can interactively complete the detection of electromagnetic interference.
  • BP collects at least one detection value of the first frequency
  • the AP detects the MIPI frequency of the display screen and sends it to BP.
  • BP combines the local detection
  • the MIPI frequency of the display screen determines electromagnetic interference. Due to the small amount of data transmitted between the AP and BP, the delay is low, and the real-time performance is high, which can efficiently detect electromagnetic interference.
  • FIG. 3 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application, which is applied to the electronic device shown in FIG.
  • the device includes multiple wireless communication modules.
  • the electromagnetic interference control method includes:
  • the electronic device When detecting that the electronic device is in a preset scene, the electronic device obtains at least one detection value of a first frequency and a detection value of a second frequency, where the first frequency is a communication frequency of the radio frequency system, and the second The frequency is the MIPI frequency of the display screen; the preset scene includes a bright screen scene;
  • the electronic device detects, according to at least one detected value of the first frequency and the detected value of the second frequency, whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the electronic device When detecting that electromagnetic interference occurs in the electronic device, the electronic device performs a frequency hopping switching operation on the display industry interface MIPI.
  • the electronic device when the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the preset scene includes a bright screen scene; when the electronic device is detected When electromagnetic interference occurs, the frequency hopping switching operation is performed for the display industry mobile interface MIPI. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the communication frequency of the radio frequency system, thereby improving the stability of communication in bright screen scenes.
  • the electronic device can quickly determine whether the frequency currently used by the display MIPI will cause electromagnetic interference with any one of the detection values of the first frequency based on frequency comparison, the electromagnetic interference scene can be quickly located based on the real-time detection value, and the detection efficiency high.
  • FIG. 4 is a schematic flowchart of an electromagnetic interference control method provided by an embodiment of the present application, which is applied to an electronic device.
  • this electromagnetic interference control Methods include:
  • the electronic device When detecting that the electronic device is in a preset scene, the electronic device obtains at least one detection value of a first frequency and a detection value of a second frequency, where the first frequency is a communication frequency of the radio frequency system, and the second The frequency is the MIPI frequency of the display screen;
  • the electronic device determines a first frequency set according to at least one detection value of the first frequency, where the first frequency set includes at least one communication frequency enabled by the radio frequency system in the preset scenario;
  • the electronic device determines a second frequency set according to the detection value of the second frequency, the second frequency set includes the MIPI frequency enabled by the display screen in the preset scene, and the enabled At least one frequency division and / or at least one frequency multiplication of the MIPI frequency;
  • the electronic device detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen according to the first frequency set and the second frequency set.
  • the electronic device obtains an available frequency range or available frequency value of the MIPI frequency of the display screen
  • the electronic device obtains a first frequency set, where the first frequency set includes at least one communication frequency enabled by the electronic device in the preset scene;
  • the electronic device determines the target frequency value of the MIPI frequency of the display screen according to the available frequency range or available frequency value and the first frequency set.
  • the electronic device obtains a target value of a screen parameter associated with the target frequency value that is pre-configured.
  • the target value is associated with a reference value.
  • the reference value is based on a preset condition of the electronic device under a first constraint condition. Determined by the frame rate calculation formula and the target frequency value, the first constraint condition is that the change amount of the frame rate of the display screen after MIPI frequency switching is less than a first preset threshold, and the screen parameters include the At least one of the following porch values in the preset frame rate calculation formula: horizontal trailing edge HBP, horizontal leading edge HFP, vertical trailing edge VBP, vertical leading edge VFP, width of vertical synchronization signal VSA, width of horizontal synchronization signal HAS;
  • S409 The electronic device adjusts the value of the screen parameter to the target value, and adjusts the MIPI frequency of the display screen to the target frequency value.
  • the electronic device when the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the preset scene includes a bright screen scene; when the electronic device is detected When electromagnetic interference occurs, the frequency hopping switching operation is performed for the display industry mobile interface MIPI. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the communication frequency of the radio frequency system, thereby improving the stability of communication in bright screen scenes.
  • the electronic device can quickly determine whether the frequency currently used by the display MIPI will cause electromagnetic interference with any one of the detection values of the first frequency based on frequency comparison, the electromagnetic interference scene can be quickly located based on the real-time detection value, and the detection efficiency high.
  • the frequency comparison in the first and second frequency sets can comprehensively and accurately detect electromagnetic interference and improve Detection accuracy and comprehensiveness.
  • the electronic device determines the target frequency value of frequency hopping in real time, and adjusts the MIPI frequency of the display screen to the target frequency value, and relatively adjusts the communication frequency of the radio frequency system, the processing process is convenient and efficient, the delay is low, and stable sexuality is high.
  • the electronic device determines the target frequency value of MIPI according to the available frequency range or available frequency value of the MIPI of the display screen and the first frequency set, thereby preventing the electronic device from using the first Any frequency in the frequency set is interfered by the MIPI of the display screen to improve the communication stability of the RF system.
  • the frame rate is an important parameter index to ensure the stability of the display after the frequency hopping switching of the display device, so the electronic device can be based on the frame rate
  • the formula determines the target value of the screen parameter that needs to be adjusted synchronously during the frequency hopping process, thereby improving the display stability of the display.
  • FIG. 5 is a schematic structural diagram of an electronic device 500 provided by an embodiment of the present application.
  • the electronic device 500 includes an application processor 510, a memory 520, a communication interface 530, and one or more programs 521, wherein the one or more programs 521 are stored in the above-mentioned memory 520 and are configured to be executed by the above-mentioned application processor 510,
  • the one or more programs 521 include instructions for performing the following steps:
  • the electronic device When it is detected that the electronic device is in a preset scene, detecting whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen, and the preset scene includes a bright screen scene;
  • the electronic device when the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the preset scene includes a bright screen scene; when the electronic device is detected When electromagnetic interference occurs, the frequency hopping switching operation is performed for the display industry mobile interface MIPI. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the communication frequency of the radio frequency system, thereby improving the stability of communication in bright screen scenes.
  • the instructions in the program are specifically used to perform the following operations: obtain at least one detected value of the first frequency and A detection value of a second frequency, the first frequency is a communication frequency of the radio frequency system, the second frequency is a MIPI frequency of the display screen; and according to at least one detection value of the first frequency and the The detection value of the second frequency detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the instructions in the program Specifically, it is used to perform the following operations: determine a first frequency set according to at least one detection value of the first frequency, where the first frequency set includes at least one communication frequency enabled by the radio frequency system in the preset scenario; And determining a second frequency set according to the detection value of the second frequency, the second frequency set including at least one of the MIPI frequency enabled by the display screen in the preset scene and the MIPI frequency enabled Frequency division and / or at least one frequency multiplication; and according to the first frequency set and the second frequency set, detecting whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the instructions in the program are specifically used to perform the following operations: determining the MIPI frequency of the display screen A target frequency value; and adjusting the MIPI frequency of the display screen to the target frequency value.
  • the instructions in the program are specifically used to perform the following operations: obtain the available frequency range of the MIPI frequency of the display screen or An available frequency value; and acquiring a first frequency set including the at least one communication frequency enabled by the electronic device in the preset scene; and according to the available frequency range or available frequency value, and The first frequency set determines the target frequency value of the MIPI frequency of the display screen.
  • the instructions in the program are specifically used to perform the following operations: acquiring a pre-configured target frequency value A target value of the associated screen parameter, the target value being associated with a reference value, the reference value is determined by the electronic device according to a preset frame rate calculation formula and the target frequency value under a first constraint condition, the The first constraint condition is that the amount of change of the frame rate of the display screen after MIPI frequency switching is less than a first preset threshold, and the screen parameters include at least one of the following porch values in the preset frame rate calculation formula: level Trailing edge HBP, horizontal leading edge HFP, vertical trailing edge VBP, vertical leading edge VFP, vertical sync signal width VSA, horizontal sync signal width HAS; and adjusting the screen parameter value to the target value and adjusting the display
  • the MIPI frequency of the screen is the target frequency value.
  • the screen parameters include a horizontal screen parameter, and the horizontal screen parameter includes at least one of the following: the HBP, the HFP, and the HAS; the target value is the
  • the second constraint condition is determined by adjusting the reference value under the second constraint condition.
  • the second constraint condition is that the change amount of the line scan duration of the display screen after the MIPI frequency switching is less than the second preset threshold.
  • the electronic device includes a baseband processor BP and an application processor AP, the AP is connected to the Modem; in terms of acquiring at least one detected value of the first frequency and a detected value of the second frequency ,
  • the instructions in the program are specifically used to perform the following operations: control the BP to perform the following operations: obtain at least one detection value of the first frequency, and report the first frequency to the AP through a preset channel At least one detection value; and controlling the AP to perform the following operations: receive at least one detection value of the first frequency from the BP, and acquire a detection value of a second frequency;
  • the instructions in the program are specifically used to perform the following operations: control the AP according to the At least one detected value of the first frequency and the detected value of the second frequency detect whether electronic interference occurs in the electronic device.
  • the electronic device includes a baseband processor BP and an application processor AP, the AP is connected to the Modem; in terms of acquiring at least one detected value of the first frequency and a detected value of the second frequency ,
  • the instructions in the program are specifically used to perform the following operations: control the BP to perform the following operations: obtain at least one detection value of the first frequency; and receive the second frequency from the AP through a preset channel Detection value of; and controlling the AP to perform the following operations: obtain the detection value of the second frequency, and send the detection value of the second frequency to the BP;
  • the instructions in the program are specifically used to perform the following operations: control the BP according to the The at least one detection value and the detection value of the second frequency detect whether electronic interference occurs in the electronic device.
  • the electronic device includes a hardware structure and / or a software module corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
  • the embodiments of the present application may divide the functional unit of the electronic device according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or software function unit. It should be noted that the division of units in the embodiments of the present application is schematic, and is only a division of logical functions, and there may be other division manners in actual implementation.
  • FIG. 6 is a block diagram of the functional units of the electromagnetic interference control device 600 involved in the embodiment of the present application.
  • the electromagnetic interference control device 600 is applied to electronic equipment, including a processing unit 601 and a communication unit 602, wherein,
  • the processing unit 601 is configured to detect whether electromagnetic interference of the radio frequency system of the electronic device and the display screen occurs when the electronic device is in a preset scene, the preset scene includes a bright screen scene; When electromagnetic interference occurs in the electronic device, the communication unit 602 performs a frequency hopping switching operation on the display screen mobile industry processor interface MIPI.
  • the electromagnetic interference control apparatus 600 may further include a storage unit 603 for storing program codes and data of electronic devices.
  • the processing unit 601 may be a processor
  • the communication unit 602 may be a touch screen or a transceiver
  • the storage unit 603 may be a memory.
  • the electronic device when the electronic device detects that the electronic device is in a preset scene, it detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the preset scene includes a bright screen scene; when the electronic device is detected When electromagnetic interference occurs, the frequency hopping switching operation is performed for the display industry mobile interface MIPI. Since the electronic device hops the display screen MIPI frequency, the display screen MIPI frequency can be adjusted to a frequency band that no longer interferes with the communication frequency of the radio frequency system, thereby improving the stability of communication in bright screen scenes.
  • the processing unit 601 is specifically configured to: obtain at least one detection of the first frequency through the communication unit 602 Value and a detection value of a second frequency, the first frequency is a communication frequency of the radio frequency system, the second frequency is a MIPI frequency of the display screen; and at least one detection value and according to the first frequency The detection value of the second frequency detects whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the processing unit 601 specifically Used to: determine a first frequency set according to at least one detected value of the first frequency, the first frequency set including at least one communication frequency enabled by the radio frequency system in the preset scene; and according to the The detection value of the second frequency determines a second frequency set, the second frequency set includes the MIPI frequency enabled by the display screen in the preset scene, and at least one divided frequency of the MIPI frequency enabled and / or Or at least one frequency multiplier; and according to the first frequency set and the second frequency set, detecting whether electromagnetic interference occurs between the radio frequency system of the electronic device and the display screen.
  • the processing unit 601 is specifically configured to: determine a target frequency value of the display screen MIPI frequency; And adjusting the MIPI frequency of the display screen to the target frequency value.
  • the processing unit 601 is specifically configured to: obtain an available frequency range or available frequency value of the MIPI frequency of the display screen; And acquiring a first frequency set, the first frequency set including at least one communication frequency enabled by the electronic device in the preset scene; and according to the available frequency range or available frequency value, and the first The frequency set determines the target frequency value of the MIPI frequency of the display screen.
  • the processing unit 601 is specifically configured to: obtain a pre-configured screen parameter associated with the target frequency value
  • the target value of the target value is associated with a reference value
  • the reference value is determined by the electronic device according to a preset frame rate calculation formula and the target frequency value under a first constraint condition, the first constraint condition Is that the amount of change of the frame rate of the display screen after the MIPI frequency switching is less than the first preset threshold
  • the screen parameters include at least one of the following porch values in the preset frame rate calculation formula: horizontal back edge HBP, Horizontal leading edge HFP, vertical trailing edge VBP, vertical leading edge VFP, vertical sync signal width VSA, horizontal sync signal width HAS; and adjusting the screen parameter value to the target value, and adjusting the display screen MIPI frequency Is the target frequency value.
  • the screen parameters include horizontal screen parameters, and the horizontal screen parameters include at least one of the following: the HBP, the HFP, and the HAS;
  • the target value is determined by the electronic device adjusting the reference value under a second constraint condition, the second constraint condition is that the amount of change in the line scan duration of the display screen after MIPI frequency switching is less than the second Preset threshold.
  • the electronic device includes a baseband processor BP and an application processor AP, the AP is connected to the Modem; in terms of acquiring at least one detected value of the first frequency and a detected value of the second frequency ,
  • the processing unit 601 is specifically configured to: control the BP to perform the following operations: obtain at least one detection value of the first frequency, and report the at least one detection value of the first frequency to the AP through a preset channel ; And controlling the AP to perform the following operations: receive at least one detected value of the first frequency from the BP, and obtain a detected value of the second frequency;
  • the processing unit 601 is specifically configured to: control the AP according to the first frequency At least one detected value and the detected value of the second frequency detect whether electronic interference occurs in the electronic device.
  • the electronic device includes a baseband processor BP and an application processor AP, the AP is connected to the Modem; in terms of acquiring at least one detected value of the first frequency and a detected value of the second frequency
  • the processing unit 601 is specifically configured to: control the BP to perform the following operations: obtain at least one detection value of the first frequency; and receive the detection value of the second frequency from the AP through a preset channel; And controlling the AP to perform the following operations: obtain the detection value of the second frequency, and send the detection value of the second frequency to the BP;
  • the processing unit 601 is specifically configured to: control the BP according to the at least one detection Value and the detection value of the second frequency, to detect whether electronic interference occurs in the electronic device.
  • An embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, which causes the computer to perform part or all of the steps of any method described in the above method embodiments ,
  • the above computer includes electronic devices.
  • Embodiments of the present application also provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium that stores the computer program, and the computer program is operable to cause the computer to perform any of the methods described in the foregoing method embodiments Some or all steps of the method.
  • the computer program product may be a software installation package, and the computer includes an electronic device.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the above-mentioned unit division is only a logical function division.
  • there may be other division modes for example, multiple units or components may be combined or integrated To another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or software function unit.
  • the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable memory.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or all or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a memory, Several instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the above methods in various embodiments of the present application.
  • the aforementioned memory includes: U disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
  • the program may be stored in a computer-readable memory, and the memory may include: a flash disk , Read-Only Memory (English: Read-Only Memory, abbreviation: ROM), Random Access Device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disk, etc.
  • ROM Read-Only Memory
  • RAM Random Access Device
  • magnetic disk or optical disk etc.

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Abstract

本申请实施例公开了一种电磁干扰控制方法及相关装置,方法包括:在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;在检测到所述电子设备发生电磁干扰时,针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。本申请有利于提高亮屏场景中通信的稳定性。

Description

电磁干扰控制方法及相关装置 技术领域
本申请涉及电子设备技术领域,具体涉及一种电磁干扰控制方法及相关装置。
背景技术
随着移动通信技术的发展,用户对手机等电子设备进行通信的需求越来越大,目前市面上的电子设备在进行数据传输时,一般通过蜂窝移动网络通信或者Wi-Fi通信等方式传输数据,全面屏手机都面临着射频干扰问题:显示屏的驱动集成芯片已经延伸到天线净空区,显示屏移动行业处理器接口MIPI频率的分频倍频点干扰射频天线,导致天线的接收灵敏度(Total Isotropic Sensitivity,TIS)比较低。
发明内容
本申请实施例提供了一种电磁干扰控制方法及相关装置,以期提高电子设备在亮屏场景中的通信稳定性。
第一方面,本申请实施例提供一种电磁干扰控制方法,包括:
在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;
在检测到所述电子设备发生电磁干扰时,针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
第二方面,本申请实施例提供一种电磁干扰控制装置,包括处理单元和通信单元,其中,
所述处理单元,用于在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;以及在检测到所述电子设备发生电磁干扰时,通过所述通信单元针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
第三方面,本申请实施例提供一种电子设备,包括处理器、存储器、通信接口以及一个或多个程序,其中,上述一个或多个程序被存储在上述存储器中,并且被配置由上述处理器执行,上述程序包括用于执行本申请实施例第一方面任一方法中的步骤的指令。
第四方面,本申请实施例提供了一种计算机可读存储介质,其中,上述计算机可读存储介质存储用于电子数据交换的计算机程序,其中,上述计算机程序使得计算机执行如本申请实施例第一方面任一方法中所描述的部分或全部步骤。
第五方面,本申请实施例提供了一种计算机程序产品,其中,上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质,上述计算机程序可操作来使计算机执行如本申请实施例第一方面任一方法中所描述的部分或全部步骤。该计算机程序产品可以为一个软件安装包。
可以看出,本申请实施例中,电子设备在检测到电子设备处于预设场景时,检测电子设备的射频系统与显示屏是否发生电磁干扰,预设场景包括亮屏场景;在检测到电子设备发生电磁干扰时,针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频,显示屏MIPI频率可以调整至与射频系统的通信频率不再发生干扰的频段,从而提高亮屏场景中通信的稳定性。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种无线通信系统的示例架构图;
图2是本申请实施例提供的一种电磁干扰控制方法的流程示意图;
图3是本申请实施例提供的另一种电磁干扰控制方法的流程示意图;
图4是本申请实施例提供的另一种电磁干扰控制方法的流程示意图;
图5是本申请实施例提供的一种电子设备的结构示意图;
图6是本申请实施例提供的一种电磁干扰控制装置的功能单元组成框图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。
本申请实施例所涉及到的电子设备可以是具备数据传输能力的电子设备,该电子设备可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备,以及各种形式的用户设备(User Equipment,UE),移动台(Mobile Station,MS),终端设备(terminal device)等等。下面对本申请实施例进行详细介绍。
如图1所示,目前电子设备101可以连接基站103和/或无线热点设备102,电子设备101连接基站103时,可以通过移动通信网络实现语音通话业务,如目前LTE中的语音通话业务,电子设备101连接无线热点设备102时,可以通过无线局域网络实现语音通话业务,如IP多媒体子系统(IP Multimedia Subsystem,IMS)语音通话业务。
请参阅图2,图2是本申请实施例提供了一种电磁干扰控制方法的流程示意图,应用于电子设备;如图所示,本电磁干扰控制方法包括:
步骤201,电子设备在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;
其中,所述电子设备与基站或者无线热点进行通信时,射频系统会选择不同的通信信道进行数据、语音等业务的信息传输,每个通信信道均对应协议约定的频域资源(如全球移动通信系统(Global System for Mobile Communication,GSM)频段、长期演进(Long Term Evolution,LTE)B8/B20/B28频段等),且由相关通信协议可知,电子设备在执行不同的业 务过程时,可以在同一业务处理时段使用一个或多个不同的通信信道,如小区切换过程中会扫描当前归属地的不同信道。预设场景具体可以包括亮屏通话场景、亮屏视频场景等,此处不做唯一限定。
步骤202,所述电子设备在检测到所述电子设备发生电磁干扰时,针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
其中,显示屏的MIPI频率可以根据芯片能力支持不同频率或频段,如频率514.5MHz、频率512.5MHz。
可以看出,本申请实施例中,电子设备在检测到电子设备处于预设场景时,检测电子设备的射频系统与显示屏是否发生电磁干扰,预设场景包括亮屏场景;在检测到电子设备发生电磁干扰时,针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频,显示屏MIPI频率可以调整至与射频系统的通信频率不再发生干扰的频段,从而提高亮屏场景中通信的稳定性。
在一个可能的示例中,所述电子设备检测所述电子设备的射频系统与显示屏是否发生电磁干扰,包括:所述电子设备获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
具体实现中,所述电子设备针对第二频率的检测值,将其与第一频率的检测值逐个比对,确定是否会发生电磁干扰。
可见,本示例中,由于电子设备能够基于频率比对,快速确定显示屏MIPI当前使用的频率是否会与第一频率中的任意一个检测值发生电磁干扰,从而可以基于实时检测值快速定位电磁干扰场景,检测效率高。
在一个可能的示例中,所述电子设备根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,包括:所述电子设备根据所述第一频率的至少一个检测值确定第一频率集合,所述第一频率集合包括所述射频系统在所述预设场景中所启用的至少一个通信频率;根据所述第二频率的检测值确定第二频率集合,所述第二频率集合包括所述显示屏在所述预设场景中所启用的MIPI频率、以及启用的所述MIPI频率的至少一个分频和/或至少一个倍频;根据所述第一频率集合和所述第二频率集合,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
其中,鉴于电子设备实际使用过程中会进行多种不同的业务过程,故而第一频率集合中包括的不同频率的数量需要实时检测和确定。
具体实现中,电子设备针对第二频率集合中的每个频率,可以逐个与第一频率集合中的频率进行比对,若存在干扰的频率,则确定电磁干扰,若不存在,则确定无电磁干扰。
可见,本示例中,由于显示屏MIPI频率的倍频或者分频也会干扰相近频段器件而引发电磁干扰,故而通过第一第二频率集合中的频率比对,全面、准确的对电磁干扰情况进行检测,提高检测准确度和全面性。
在一个可能的示例中,所述电子设备针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作,包括:所述电子设备确定所述显示屏的MIPI频率的目标频率值;将所述显示屏的MIPI频率调整为所述目标频率值。
可以理解的是,显示屏MIPI频率的目标频率值的确定策略可以是多种多样的,具体约束条件可以包括显示屏芯片能力支持,此处不做唯一限定。
可见,本示例中,电子设备确定发生电磁干扰后,实时确定跳频的目标频率值,并调整显示屏MIPI频率为所述目标频率值,相对调整射频系统的通信频率,处理过程便捷高效, 延时低,稳定性高。
在一个可能的示例中,所述电子设备确定所述显示屏的MIPI频率的目标频率值,包括:所述电子设备获取所述显示屏的MIPI频率的可用频率范围或者可用频率值;获取第一频率集合,所述第一频率集合包括所述电子设备在所述预设场景中所启用的至少一个通信频率;根据所述可用频率范围或者可用频率值,以及所述第一频率集合,确定所述显示屏的MIPI频率的目标频率值。
具体实现中,电子设备确定的目标频率值应该很少与第一频率集合中任意一个频率不会发生电磁干扰。
可见,本示例中,由于电子设备根据显示屏MIPI的可用频率范围或者可用频率值,以及所述第一频率集合,确定了MIPI的目标频率值,从而避免电子设备在当前预设场景中因射频系统使用第一频率集合中的任意频率而被显示屏MIPI干扰,提高射频系统通信稳定性。
在一个可能的示例中,所述电子设备将所述显示屏的MIPI频率调整为所述目标频率值,包括:所述电子设备获取预配置的所述目标频率值所关联的屏幕参数的目标值,所述目标值关联参考值,所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的,所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值,所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值:水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS;调整所述屏幕参数的值为所述目标值,以及调整所述显示屏的MIPI频率为所述目标频率值。
其中,所述预设帧率计算公式为如下公式:
FPS=CLK_rate x 2x lane_num/((height+VBP+VSA+VFP)x(weight+HBP+HFP+HSA)x bits_perpixel)
其中,FPS表示显示屏的帧率,CLK_rate表示MIPI频率,lane_num表示通道数,height和weight表示显示屏的物理尺寸,VBP(vertical back porch)表示在一帧图像开始时,垂直同步信号以后的无效的行数,VFB(vertical front porch)表示在一帧图像结束后,垂直同步信号以前的无效的行数,VSA(vertical sync active)表示垂直同步信号的宽度,HBP(horizontal back porch)表示从水平同步信号开始到一行的有效数据开始之间的时钟的个数,HFP(horizontal front porth)表示一行的有效数据结束到下一个水平同步信号开始之间的时钟的个数,HSA(horizontal sync active):表示水平同步信号的宽度,bits_perpixel表示RGB显示数据宽度。
其中,所述第一预设阈值可以是经验值,用于保证显示屏在频率切换前后内容显示的稳定性,如可以是显示屏芯片最大允许误差范围1%。
可见,本示例中,电子设备在跳频切换后,会使得电子设备的显示屏的一些参数发生改变,帧率是保证显示屏跳频切换后的显示稳定性的一个重要参数指标,故而电子设备可以基于帧率公式,预先确定该跳频过程中需要同步调整的屏幕参数的目标值,从而提高显示屏显示稳定性。
在一个可能的示例中,所述屏幕参数包括水平屏幕参数,所述水平屏幕参数包括以下至少一种:所述HBP、所述HFP和所述HAS;
所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的,所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
举例来说,在显示屏MIPI主频率为514.5MHz时测量到行扫描时间为7.18us,MIPI频率切换到辅助频率529MHz时,根据屏幕参数的参考值进行微调,并同步测量行扫描时 间,确定行扫描时间为7.18us状态下的微调后的屏幕参数的值为目标值。这主要是由于上述预设帧率计算公式仅为理论计算公式,实际上由于器件的物理差异性,此参考值的准确度并不是很高,而MIPI传输频率和屏幕参数的数值实际又相差较大(MHz和几十、几百的差异),同时显示屏水平屏幕参数对显示稳定性影响较大,故而考虑基于实际检测结果来修正水平屏幕参数的值,以此提高稳定性。
此外,所述屏幕参数若仅包括垂直屏幕参数,所述垂直屏幕参数包括以下至少一种:所述VBP、所述VFP和所述VAS,则所述目标值可以等于所述参考值,即调整垂直方向的porch值对行扫描时长没有影响。
可见,本示例中,在屏幕参数包括水平屏幕参数的情况下,电子设备能够根据行扫描时长约束条件结合实际检测结果对参考值进行修正,从而提高跳频后显示屏稳定性。
在一个可能的示例中,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;所述电子设备获取第一频率的至少一个检测值和第二频率的检测值,包括:所述电子设备控制所述BP执行以下操作:获取所述第一频率的至少一个检测值,以及通过预设通道向所述AP上报所述第一频率的至少一个检测值;控制所述AP执行以下操作:接收来自所述BP的所述第一频率的至少一个检测值,以及获取第二频率的检测值;
所述电子设备根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰,包括:控制所述AP根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
其中,所述预设通道为调制解调器Modem与AP之间的CCCI通道。
可见,本示例中,电子设备的AP和BP能够交互完成电磁干扰的检测,具体由BP采集第一频率的至少一个检测值并发给AP,AP结合本端检测到的显示屏MIPI频率判断电磁干扰,由于AP处理能力强,故而可以快捷高效的得到检测结果。
在一个可能的示例中,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;所述电子设备获取第一频率的至少一个检测值和第二频率的检测值,包括:控制所述BP执行以下操作:获取所述第一频率的至少一个检测值;以及通过预设通道接收来自所述AP的所述第二频率的检测值;控制所述AP执行以下操作:获取所述第二频率的检测值,并向所述BP发送所述第二频率的检测值;
所述电子设备根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰,包括:控制所述BP根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
可见,本示例中,电子设备的AP和BP能够交互完成电磁干扰的检测,具体由BP采集第一频率的至少一个检测值,AP检测显示屏MIPI频率并发给BP,BP结合本端检测到的显示屏MIPI频率判断电磁干扰,由于AP与BP之间传输数据量小,延时低,实时性高,可以高效检测电磁干扰。
与上述图2所示的实施例一致的,请参阅图3,图3是本申请实施例提供的一种电磁干扰控制方法的流程示意图,应用于如图1所述的电子设备,所述电子设备包括多个无线通信模块,如图所示,本电磁干扰控制方法包括:
S301,电子设备在检测到电子设备处于预设场景时,获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;所述预设场景包括亮屏场景;
S302,所述电子设备根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
S303,所述电子设备在检测到所述电子设备发生电磁干扰时,针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
可以看出,本申请实施例中,电子设备在检测到电子设备处于预设场景时,检测电子设备的射频系统与显示屏是否发生电磁干扰,预设场景包括亮屏场景;在检测到电子设备发生电磁干扰时,针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频,显示屏MIPI频率可以调整至与射频系统的通信频率不再发生干扰的频段,从而提高亮屏场景中通信的稳定性。
此外,由于电子设备能够基于频率比对,快速确定显示屏MIPI当前使用的频率是否会与第一频率中的任意一个检测值发生电磁干扰,从而可以基于实时检测值快速定位电磁干扰场景,检测效率高。
与上述图2所示的实施例一致的,请参阅图4,图4是本申请实施例提供的一种电磁干扰控制方法的流程示意图,应用于电子设备,如图所示,本电磁干扰控制方法包括:
S401,电子设备在检测到电子设备处于预设场景时,获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;
S402,所述电子设备根据所述第一频率的至少一个检测值确定第一频率集合,所述第一频率集合包括所述射频系统在所述预设场景中所启用的至少一个通信频率;
S403,所述电子设备根据所述第二频率的检测值确定第二频率集合,所述第二频率集合包括所述显示屏在所述预设场景中所启用的MIPI频率、以及启用的所述MIPI频率的至少一个分频和/或至少一个倍频;
S404,所述电子设备根据所述第一频率集合和所述第二频率集合,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
S405,所述电子设备获取所述显示屏的MIPI频率的可用频率范围或者可用频率值;
S406,所述电子设备获取第一频率集合,所述第一频率集合包括所述电子设备在所述预设场景中所启用的至少一个通信频率;
S407,所述电子设备根据所述可用频率范围或者可用频率值,以及所述第一频率集合,确定所述显示屏的MIPI频率的目标频率值。
S408,所述电子设备获取预配置的所述目标频率值所关联的屏幕参数的目标值,所述目标值关联参考值,所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的,所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值,所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值:水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS;
S409,所述电子设备调整所述屏幕参数的值为所述目标值,以及调整所述显示屏的MIPI频率为所述目标频率值。
可以看出,本申请实施例中,电子设备在检测到电子设备处于预设场景时,检测电子设备的射频系统与显示屏是否发生电磁干扰,预设场景包括亮屏场景;在检测到电子设备发生电磁干扰时,针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频,显示屏MIPI频率可以调整至与射频系统的通信频率不再发生干扰的频段,从而提高亮屏场景中通信的稳定性。
此外,由于电子设备能够基于频率比对,快速确定显示屏MIPI当前使用的频率是否会与第一频率中的任意一个检测值发生电磁干扰,从而可以基于实时检测值快速定位电磁干扰场景,检测效率高。
此外,由于显示屏MIPI频率的倍频或者分频也会干扰相近频段器件而引发电磁干扰,故而通过第一第二频率集合中的频率比对,全面、准确的对电磁干扰情况进行检测,提高检测准确度和全面性。
此外,电子设备确定发生电磁干扰后,实时确定跳频的目标频率值,并调整显示屏MIPI频率为所述目标频率值,相对调整射频系统的通信频率,处理过程便捷高效,延时低,稳定性高。
此外,由于电子设备根据显示屏MIPI的可用频率范围或者可用频率值,以及所述第一频率集合,确定了MIPI的目标频率值,从而避免电子设备在当前预设场景中因射频系统使用第一频率集合中的任意频率而被显示屏MIPI干扰,提高射频系统通信稳定性。
此外,电子设备在跳频切换后,会使得电子设备的显示屏的一些参数发生改变,帧率是保证显示屏跳频切换后的显示稳定性的一个重要参数指标,故而电子设备可以基于帧率公式,预先确定该跳频过程中需要同步调整的屏幕参数的目标值,从而提高显示屏显示稳定性。
与上述图2、图3、图4所示的实施例一致的,请参阅图5,图5是本申请实施例提供的一种电子设备500的结构示意图,如图所示,所述电子设备500包括应用处理器510、存储器520、通信接口530以及一个或多个程序521,其中,所述一个或多个程序521被存储在上述存储器520中,并且被配置由上述应用处理器510执行,所述一个或多个程序521包括用于执行以下步骤的指令:
在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;
在检测到所述电子设备发生电磁干扰时,针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
可以看出,本申请实施例中,电子设备在检测到电子设备处于预设场景时,检测电子设备的射频系统与显示屏是否发生电磁干扰,预设场景包括亮屏场景;在检测到电子设备发生电磁干扰时,针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频,显示屏MIPI频率可以调整至与射频系统的通信频率不再发生干扰的频段,从而提高亮屏场景中通信的稳定性。
在一个可能的示例中,在所述检测所述电子设备的射频系统与显示屏是否发生电磁干扰方面,所述程序中的指令具体用于执行以下操作:获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;以及根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
在一个可能的示例中,在所述根据所述至少一个检测值和所述第二频率的检测值,检 测所述电子设备的射频系统与显示屏是否发生电磁干扰方面,所述程序中的指令具体用于执行以下操作:根据所述第一频率的至少一个检测值确定第一频率集合,所述第一频率集合包括所述射频系统在所述预设场景中所启用的至少一个通信频率;以及根据所述第二频率的检测值确定第二频率集合,所述第二频率集合包括所述显示屏在所述预设场景中所启用的MIPI频率、以及启用的所述MIPI频率的至少一个分频和/或至少一个倍频;以及根据所述第一频率集合和所述第二频率集合,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
在一个可能的示例中,在所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作方面,所述程序中的指令具体用于执行以下操作:确定所述显示屏的MIPI频率的目标频率值;以及将所述显示屏的MIPI频率调整为所述目标频率值。
在一个可能的示例中,在所述确定所述显示屏的MIPI频率的目标频率值方面,所述程序中的指令具体用于执行以下操作:获取所述显示屏的MIPI频率的可用频率范围或者可用频率值;以及获取第一频率集合,所述第一频率集合包括所述电子设备在所述预设场景中所启用的至少一个通信频率;以及根据所述可用频率范围或者可用频率值,以及所述第一频率集合,确定所述显示屏的MIPI频率的目标频率值。
在一个可能的示例中,在所述将所述显示屏的MIPI频率调整为所述目标频率值方面,所述程序中的指令具体用于执行以下操作:获取预配置的所述目标频率值所关联的屏幕参数的目标值,所述目标值关联参考值,所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的,所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值,所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值:水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS;以及调整所述屏幕参数的值为所述目标值,以及调整所述显示屏的MIPI频率为所述目标频率值。
在一个可能的示例中,所述屏幕参数包括水平屏幕参数,所述水平屏幕参数包括以下至少一种:所述HBP、所述HFP和所述HAS;所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的,所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
在一个可能的示例中,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;在所述获取第一频率的至少一个检测值和第二频率的检测值方面,所述程序中的指令具体用于执行以下操作:控制所述BP执行以下操作:获取所述第一频率的至少一个检测值,以及通过预设通道向所述AP上报所述第一频率的至少一个检测值;以及控制所述AP执行以下操作:接收来自所述BP的所述第一频率的至少一个检测值,以及获取第二频率的检测值;
在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰方面,所述程序中的指令具体用于执行以下操作:控制所述AP根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
在一个可能的示例中,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;在所述获取第一频率的至少一个检测值和第二频率的检测值方面,所述程序中的指令具体用于执行以下操作:控制所述BP执行以下操作:获取所述第一频率的至少一个检测值;以及通过预设通道接收来自所述AP的所述第二频率的检测值;以及控制所述AP执行以下操作:获取所述第二频率的检测值,并向所述BP发送所述第二频率的检测值;
在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发 生电磁干扰方面,所述程序中的指令具体用于执行以下操作:控制所述BP根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
上述主要从方法侧执行过程的角度对本申请实施例的方案进行了介绍。可以理解的是,电子设备为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所提供的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对电子设备进行功能单元的划分,例如,可以对应各个功能划分各个功能单元,也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。需要说明的是,本申请实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
图6是本申请实施例中所涉及的电磁干扰控制装置600的功能单元组成框图。该电磁干扰控制装置600应用于电子设备,包括处理单元601和通信单元602,其中,
所述处理单元601,用于在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;以及在检测到所述电子设备发生电磁干扰时,通过所述通信单元602针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
其中,所述电磁干扰控制装置600还可以包括存储单元603,用于存储电子设备的程序代码和数据。所述处理单元601可以是处理器,所述通信单元602可以是触控显示屏或者收发器,存储单元603可以是存储器。
可以看出,本申请实施例中,电子设备在检测到电子设备处于预设场景时,检测电子设备的射频系统与显示屏是否发生电磁干扰,预设场景包括亮屏场景;在检测到电子设备发生电磁干扰时,针对显示屏移动行业处理器接口MIPI执行跳频切换操作。由于电子设备将显示屏MIPI频率跳频,显示屏MIPI频率可以调整至与射频系统的通信频率不再发生干扰的频段,从而提高亮屏场景中通信的稳定性。
在一个可能的示例中,在所述检测所述电子设备的射频系统与显示屏是否发生电磁干扰方面,所述处理单元601具体用于:通过所述通信单元602获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;以及根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
在一个可能的示例中,在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰方面,所述处理单元601具体用于:根据所述第一频率的至少一个检测值确定第一频率集合,所述第一频率集合包括所述射频系统在所述预设场景中所启用的至少一个通信频率;以及根据所述第二频率的检测值确定第二频率集合,所述第二频率集合包括所述显示屏在所述预设场景中所启用的MIPI频率、以及启用的所述MIPI频率的至少一个分频和/或至少一个倍频;以及根据所述第一频率集合和所述第二频率集合,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
在一个可能的示例中,在所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作方面,所述处理单元601具体用于:确定所述显示屏的MIPI频率的目标频率值;以及将所述显示屏的MIPI频率调整为所述目标频率值。
在一个可能的示例中,在所述确定所述显示屏的MIPI频率的目标频率值方面,所述处理单元601具体用于:获取所述显示屏的MIPI频率的可用频率范围或者可用频率值;以及获取第一频率集合,所述第一频率集合包括所述电子设备在所述预设场景中所启用的至少一个通信频率;以及根据所述可用频率范围或者可用频率值,以及所述第一频率集合,确定所述显示屏的MIPI频率的目标频率值。
在一个可能的示例中,在所述将所述显示屏的MIPI频率调整为所述目标频率值方面,所述处理单元601具体用于:获取预配置的所述目标频率值所关联的屏幕参数的目标值,所述目标值关联参考值,所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的,所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值,所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值:水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS;以及调整所述屏幕参数的值为所述目标值,以及调整所述显示屏的MIPI频率为所述目标频率值。
在一个可能的示例中,所述屏幕参数包括水平屏幕参数,所述水平屏幕参数包括以下至少一种:所述HBP、所述HFP和所述HAS;
所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的,所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
在一个可能的示例中,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;在所述获取第一频率的至少一个检测值和第二频率的检测值方面,所述处理单元601具体用于:控制所述BP执行以下操作:获取所述第一频率的至少一个检测值,以及通过预设通道向所述AP上报所述第一频率的至少一个检测值;以及控制所述AP执行以下操作:接收来自所述BP的所述第一频率的至少一个检测值,以及获取第二频率的检测值;
在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰方面,所述处理单元601具体用于:控制所述AP根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
在一个可能的示例中,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;在所述获取第一频率的至少一个检测值和第二频率的检测值方面,所述处理单元601具体用于:控制所述BP执行以下操作:获取所述第一频率的至少一个检测值;以及通过预设通道接收来自所述AP的所述第二频率的检测值;以及控制所述AP执行以下操作:获取所述第二频率的检测值,并向所述BP发送所述第二频率的检测值;
在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰方面,所述处理单元601具体用于:控制所述BP根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
本申请实施例还提供一种计算机存储介质,其中,该计算机存储介质存储用于电子数据交换的计算机程序,该计算机程序使得计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤,上述计算机包括电子设备。
本申请实施例还提供一种计算机程序产品,上述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质,上述计算机程序可操作来使计算机执行如上述方法实施例中记载的任一方法的部分或全部步骤。该计算机程序产品可以为一个软件安装包,上述计算机包括电子设备。
需要说明的是,对于前述的各方法实施例,为了简单描述,故将其都表述为一系列的动作组合,但是本领域技术人员应该知悉,本申请并不受所描述的动作顺序的限制,因为 依据本申请,某些步骤可以采用其他顺序或者同时进行。其次,本领域技术人员也应该知悉,说明书中所描述的实施例均属于优选实施例,所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中,应该理解到,所揭露的装置,可通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如上述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储器中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储器中,包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例上述方法的全部或部分步骤。而前述的存储器包括:U盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读存储器中,存储器可以包括:闪存盘、只读存储器(英文:Read-Only Memory,简称:ROM)、随机存取器(英文:Random Access Memory,简称:RAM)、磁盘或光盘等。
以上对本申请实施例进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及其核心思想;同时,对于本领域的一般技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种电磁干扰控制方法,其特征在于,包括:
    在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;
    在检测到所述电子设备发生电磁干扰时,针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
  2. 根据权利要求1所述的方法,其特征在于,所述检测所述电子设备的射频系统与显示屏是否发生电磁干扰,包括:
    获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;
    根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
  3. 根据权利要求2所述的方法,其特征在于,所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,包括:
    根据所述第一频率的至少一个检测值确定第一频率集合,所述第一频率集合包括所述射频系统在所述预设场景中所启用的至少一个通信频率;
    根据所述第二频率的检测值确定第二频率集合,所述第二频率集合包括所述显示屏在所述预设场景中所启用的MIPI频率、以及启用的所述MIPI频率的至少一个分频和/或至少一个倍频;
    根据所述第一频率集合和所述第二频率集合,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
  4. 根据权利要求1-3任一项所述的方法,其特征在于,所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作,包括:
    确定所述显示屏的MIPI频率的目标频率值;
    将所述显示屏的MIPI频率调整为所述目标频率值。
  5. 根据权利要求4所述的方法,其特征在于,所述确定所述显示屏的MIPI频率的目标频率值,包括:
    获取所述显示屏的MIPI频率的可用频率范围或者可用频率值;
    获取第一频率集合,所述第一频率集合包括所述电子设备在所述预设场景中所启用的至少一个通信频率;
    根据所述可用频率范围或者可用频率值,以及所述第一频率集合,确定所述显示屏的MIPI频率的目标频率值。
  6. 根据权利要求5所述的方法,其特征在于,所述将所述显示屏的MIPI频率调整为所述目标频率值,包括:
    获取预配置的所述目标频率值所关联的屏幕参数的目标值,所述目标值关联参考值,所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的,所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值,所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值:水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS;
    调整所述屏幕参数的值为所述目标值,以及调整所述显示屏的MIPI频率为所述目标频率值。
  7. 根据权利要求6所述的方法,其特征在于,所述屏幕参数包括水平屏幕参数,所述 水平屏幕参数包括以下至少一种:所述HBP、所述HFP和所述HAS;
    所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的,所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
  8. 根据权利要求2-7任一项所述的方法,其特征在于,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;所述获取第一频率的至少一个检测值和第二频率的检测值,包括:
    控制所述BP执行以下操作:获取所述第一频率的至少一个检测值,以及通过预设通道向所述AP上报所述第一频率的至少一个检测值;
    控制所述AP执行以下操作:接收来自所述BP的所述第一频率的至少一个检测值,以及获取第二频率的检测值;
    所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰,包括:
    控制所述AP根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
  9. 根据权利要求2-7任一项所述的方法,其特征在于,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;所述获取第一频率的至少一个检测值和第二频率的检测值,包括:
    控制所述BP执行以下操作:获取所述第一频率的至少一个检测值;以及通过预设通道接收来自所述AP的所述第二频率的检测值;
    控制所述AP执行以下操作:获取所述第二频率的检测值,并向所述BP发送所述第二频率的检测值;
    所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰,包括:
    控制所述BP根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
  10. 一种电磁干扰控制装置,其特征在于,包括处理单元和通信单元,其中,
    所述处理单元,用于在检测到电子设备处于预设场景时,检测所述电子设备的射频系统与显示屏是否发生电磁干扰,所述预设场景包括亮屏场景;以及在检测到所述电子设备发生电磁干扰时,通过所述通信单元针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作。
  11. 根据权利要求10所述的装置,其特征在于,在所述检测所述电子设备的射频系统与显示屏是否发生电磁干扰方面,所述处理单元具体用于:获取第一频率的至少一个检测值和第二频率的检测值,所述第一频率为所述射频系统的通信频率,所述第二频率为所述显示屏的MIPI频率;以及根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
  12. 根据权利要求11所述的装置,其特征在于,在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备的射频系统与显示屏是否发生电磁干扰方面,所述处理单元具体用于:根据所述第一频率的至少一个检测值确定第一频率集合,所述第一频率集合包括所述射频系统在所述预设场景中所启用的至少一个通信频率;以及根据所述第二频率的检测值确定第二频率集合,所述第二频率集合包括所述显示屏在所述预设场景中所启用的MIPI频率、以及启用的所述MIPI频率的至少一个分频和/或至少一个倍频;以及根据所述第一频率集合和所述第二频率集合,检测所述电子设备的射频系统与显示屏是否发生电磁干扰。
  13. 根据权利要求10-12任一项所述的装置,其特征在于,在所述针对所述显示屏移动行业处理器接口MIPI执行跳频切换操作方面,所述处理单元具体用于:确定所述显示屏的MIPI频率的目标频率值;以及将所述显示屏的MIPI频率调整为所述目标频率值。
  14. 根据权利要求13所述的装置,其特征在于,在所述确定所述显示屏的MIPI频率的目标频率值方面,所述处理单元具体用于:获取所述显示屏的MIPI频率的可用频率范围或者可用频率值;以及获取第一频率集合,所述第一频率集合包括所述电子设备在所述预设场景中所启用的至少一个通信频率;以及根据所述可用频率范围或者可用频率值,以及所述第一频率集合,确定所述显示屏的MIPI频率的目标频率值。
  15. 根据权利要求14所述的装置,其特征在于,在所述将所述显示屏的MIPI频率调整为所述目标频率值方面,所述处理单元具体用于:获取预配置的所述目标频率值所关联的屏幕参数的目标值,所述目标值关联参考值,所述参考值是所述电子设备在第一约束条件下根据预设帧率计算公式和所述目标频率值而确定的,所述第一约束条件为所述显示屏的帧率在MIPI频率切换之后的变化量小于第一预设阈值,所述屏幕参数包括所述预设帧率计算公式中的以下至少一种porch值:水平后沿HBP、水平前沿HFP、垂直后沿VBP、垂直前沿VFP、垂直同步信号的宽度VSA、水平同步信号的宽度HAS;以及调整所述屏幕参数的值为所述目标值,以及调整所述显示屏的MIPI频率为所述目标频率值。
  16. 根据权利要求15所述的装置,其特征在于,所述屏幕参数包括水平屏幕参数,所述水平屏幕参数包括以下至少一种:所述HBP、所述HFP和所述HAS;
    所述目标值是所述电子设备在第二约束条件下调整所述参考值而确定的,所述第二约束条件为所述显示屏的行扫描时长在MIPI频率切换之后的变化量小于第二预设阈值。
  17. 根据权利要求11-16任一项所述的装置,其特征在于,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;在所述通过所述通信单元获取第一频率的至少一个检测值和第二频率的检测值方面,所述处理单元具体用于:通过所述通信单元控制所述BP执行以下操作:获取所述第一频率的至少一个检测值,以及通过预设通道向所述AP上报所述第一频率的至少一个检测值;以及控制所述AP执行以下操作:接收来自所述BP的所述第一频率的至少一个检测值,以及获取第二频率的检测值;
    在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰方面,所述处理单元具体用于:控制所述AP根据所述第一频率的至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
  18. 根据权利要求11-17任一项所述的装置,其特征在于,所述电子设备包括基带处理器BP和应用处理器AP,所述AP连接所述Modem;在所述获取第一频率的至少一个检测值和第二频率的检测值方面,所述处理单元具体用于:控制所述BP执行以下操作:获取所述第一频率的至少一个检测值;以及通过预设通道接收来自所述AP的所述第二频率的检测值;以及控制所述AP执行以下操作:获取所述第二频率的检测值,并向所述BP发送所述第二频率的检测值;
    在所述根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电磁干扰方面,所述处理单元具体用于:控制所述BP根据所述至少一个检测值和所述第二频率的检测值,检测所述电子设备是否发生电子干扰。
  19. 一种电子设备,其特征在于,包括处理器、存储器、通信接口,以及一个或多个程序,所述一个或多个程序被存储在所述存储器中,并且被配置由所述处理器执行,所述程序包括用于执行如权利要求1-9任一项所述的方法中的步骤的指令。
  20. 一种计算机可读存储介质,其特征在于,存储用于电子数据交换的计算机程序,其中,所述计算机程序使得计算机执行如权利要求1-9任一项所述的方法。
PCT/CN2019/107883 2018-10-23 2019-09-25 电磁干扰控制方法及相关装置 Ceased WO2020082970A1 (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113452454A (zh) * 2021-06-28 2021-09-28 广东虹勤通讯技术有限公司 一种屏幕自动检测方法、装置、无线电子设备和存储介质
CN115378514A (zh) * 2022-08-25 2022-11-22 努比亚技术有限公司 一种终端接收干扰优化方法、设备及计算机可读存储介质

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110266428B (zh) * 2019-06-19 2021-09-28 Oppo(重庆)智能科技有限公司 电磁干扰控制方法和装置、电子设备、存储介质
CN111446986A (zh) * 2020-03-24 2020-07-24 维沃移动通信有限公司 帧率调节方法及电子设备
CN113163145B (zh) * 2021-03-22 2023-10-31 维沃移动通信有限公司 时钟频率切换方法、装置、电子设备以及可读存储介质
CN114584175B (zh) * 2022-03-29 2023-05-30 Oppo广东移动通信有限公司 干扰控制方法及相关装置
CN118470837B (zh) * 2024-07-11 2024-11-12 深圳市零豆科技有限公司 手表式车钥匙控制方法、装置和手表式车钥匙
CN119395444B (zh) * 2025-01-03 2025-03-07 亚创光电(深圳)有限公司 一种显示模组的电磁环境模拟方法、系统、介质及产品

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090167753A1 (en) * 2007-12-28 2009-07-02 Samsung Sdi Co., Ltd. Plasma display panel and driving method thereof
CN105827775A (zh) * 2016-04-20 2016-08-03 努比亚技术有限公司 一种降低mipi干扰的测试方法和系统
CN106936515A (zh) * 2017-05-09 2017-07-07 广东欧珀移动通信有限公司 射频干扰处理方法、存储介质及终端
CN108601037A (zh) * 2018-04-16 2018-09-28 Oppo广东移动通信有限公司 基于wifi网络的摄像模组控制方法以及装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8644782B2 (en) * 2011-11-14 2014-02-04 Apple Inc. Agile clocking with receiver PLL management
EP3316487B1 (en) * 2015-07-21 2021-03-03 Huawei Technologies Co., Ltd. Interference reduction method and apparatus
CN105357033B (zh) * 2015-10-16 2019-04-05 华为技术有限公司 一种减小移动产业处理器接口对通信质量干扰的方法和装置
KR102341543B1 (ko) * 2015-10-21 2021-12-21 삼성전자 주식회사 주파수 간의 간섭을 회피하는 방법 및 이를 지원하는 전자 장치
CN108093135B (zh) * 2017-12-15 2019-08-30 Oppo广东移动通信有限公司 电子设备的抗干扰方法及相关产品
CN108093134B (zh) * 2017-12-15 2020-09-22 Oppo广东移动通信有限公司 电子设备的抗干扰方法及相关产品
CN108111679B (zh) * 2017-12-15 2021-04-02 Oppo广东移动通信有限公司 电子装置的抗干扰方法及相关产品

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090167753A1 (en) * 2007-12-28 2009-07-02 Samsung Sdi Co., Ltd. Plasma display panel and driving method thereof
CN105827775A (zh) * 2016-04-20 2016-08-03 努比亚技术有限公司 一种降低mipi干扰的测试方法和系统
CN106936515A (zh) * 2017-05-09 2017-07-07 广东欧珀移动通信有限公司 射频干扰处理方法、存储介质及终端
CN108601037A (zh) * 2018-04-16 2018-09-28 Oppo广东移动通信有限公司 基于wifi网络的摄像模组控制方法以及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3859982A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113452454A (zh) * 2021-06-28 2021-09-28 广东虹勤通讯技术有限公司 一种屏幕自动检测方法、装置、无线电子设备和存储介质
CN115378514A (zh) * 2022-08-25 2022-11-22 努比亚技术有限公司 一种终端接收干扰优化方法、设备及计算机可读存储介质

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EP3859982A4 (en) 2021-12-01
US20210243618A1 (en) 2021-08-05
CN109412645A (zh) 2019-03-01
KR20210072806A (ko) 2021-06-17
CN111601325B (zh) 2023-03-31
CN111601325A (zh) 2020-08-28
JP2022505598A (ja) 2022-01-14

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