WO2018049636A1 - 信号生成方法、信号解析方法、主动笔及触控屏 - Google Patents

信号生成方法、信号解析方法、主动笔及触控屏 Download PDF

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Publication number
WO2018049636A1
WO2018049636A1 PCT/CN2016/099156 CN2016099156W WO2018049636A1 WO 2018049636 A1 WO2018049636 A1 WO 2018049636A1 CN 2016099156 W CN2016099156 W CN 2016099156W WO 2018049636 A1 WO2018049636 A1 WO 2018049636A1
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Prior art keywords
signal
module
coded
active pen
information
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Ceased
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PCT/CN2016/099156
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English (en)
French (fr)
Inventor
戴石礼
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Priority to PCT/CN2016/099156 priority Critical patent/WO2018049636A1/zh
Priority to EP16901901.5A priority patent/EP3321782B1/en
Priority to CN201680000998.2A priority patent/CN108431741A/zh
Priority to KR1020177033684A priority patent/KR102069961B1/ko
Priority to US15/811,977 priority patent/US10705627B2/en
Publication of WO2018049636A1 publication Critical patent/WO2018049636A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0442—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser

Definitions

  • the present invention relates to the field of electronic information technology, and in particular, to a signal generation method, a signal analysis method, an active pen, and a touch screen.
  • the active pen is an electronic product that transmits signals through the tip of the pen, receives signals from the screen and demodulates them to obtain nib positioning and other information.
  • the existing active pens also have functions such as pressure detection and buttons.
  • the active pen only needs to transmit a signal of a fixed frequency, and the screen end receives the signal through the sensing channel arranged in a certain shape, and determines the position of the nib on the screen through the signal detected by each sensing channel.
  • the pressure sensor, button or other sensor is on the active pen. The pressure, button or other information on the active pen must be transmitted to the screen through a pen tip in a certain way, and the information is obtained after demodulation at the screen.
  • the coding part adopts binary coding, and the coordinate position of the FM signal and pressure or function
  • the key press signal is integrated to form a coded signal, and the amplitude of each bit is modulated, and the information is transmitted by the combined coding of 1 and 0, and is determined according to the magnitude of the signal obtained by demodulation, and is judged to be 1 or less than a certain size.
  • the size is determined to be 0; the other is frequency modulation, as shown in Figure 2: the coordinate position FM signal and the pen tip pressure or function key press signal are integrated to form a coded signal, and the information is modulated by frequency, each frequency size Representing certain information, modulating a certain amount of information through a corresponding frequency, and then obtaining information by demodulating the frequency at the screen end.
  • the disadvantage of using the binary coding method is that each bit has only 0 and 1 states, and the information content is small. If you want to transmit more information, you must increase the number of code bits, so that the information coding takes a long time to refresh. The rate will decrease.
  • the frequency modulation method if you want to transmit more information, you can increase the bandwidth of the FM signal, have a larger frequency band width to encode the information, or make the frequency modulation more fine, the bandwidth remains unchanged, and increase the frequency resolution. To get more information, this requires higher frequency modulation and demodulation performance of the hardware, and the resolution of the demodulation is proportional to the duration of the signal. If the demodulation end has better frequency resolution, the signal The time must be longer.
  • An object of the present invention is to provide a signal generation method, a signal analysis method, an active pen, and a touch screen, which can transmit more coding information and improve the initiative in a shorter time without increasing the hardware burden. The efficiency of information transfer between the pen and the screen.
  • an embodiment of the present invention provides a signal generating method, which is applied to an active pen, and specifically includes: the active pen performs multi-bit multi-digit encoding on the information to be delivered; The bit multi-coded code is separately frequency-modulated to respectively generate a plurality of coded FM signals; the active pen integrates a preset fixed frequency signal for tip position detection with the plurality of coded FM signals to form a coded signal.
  • the embodiment of the present invention further provides a signal analysis method, which is applied to a touch screen, and specifically includes: the touch screen identifies a plurality of coded FM signals from the received coded signal and the position detection for the tip a fixed frequency signal; wherein the coding signal is generated by a signal generation method of an active pen; the touch screen separately performs frequency demodulation on the plurality of coded FM signals to obtain the plurality of coded FM signals respectively Corresponding multi-bit multi-encoding; the touch screen acquires information to be transmitted corresponding to the multi-digit multi-code encoding according to the preset correspondence between the multi-bit multi-code encoding and the information to be transmitted; The touch screen performs amplitude solution on the fixed frequency signal for detecting the position of the nib Adjusting to obtain the demodulation amplitude of the fixed frequency signal for detecting the position of the nib; the touch screen calculating the position of the nib of the active pen according to the demodulation amplitude.
  • An embodiment of the present invention further provides an active pen, including: an information encoding module, configured to perform multi-bit multi-code encoding on the information to be transmitted; a frequency modulation module connected to the information encoding module; The modulation module is configured to respectively perform frequency modulation on the multi-bit multi-coded code to respectively generate a plurality of coded FM signals; a signal integration module is connected to the frequency modulation module; and the signal integration module is configured to preset A fixed frequency signal for tip position detection is integrated with the plurality of coded FM signals to form the coded signal.
  • An embodiment of the present invention further provides a touch screen comprising: a coded signal transmitted by a signal transmitting method according to the item; a signal identifying module connected to the signal receiving module; and the signal identifying module is used to Identifying the plurality of coded FM signals and the fixed frequency signal for detecting the position of the pen tip; the frequency demodulation module is connected to the signal identification module; the frequency demodulation module is used for The plurality of coded FM signals are respectively subjected to frequency demodulation to obtain multi-bit multi-coded codes respectively corresponding to the plurality of coded FM signals; the information acquisition module is connected to the frequency demodulation module; and the information acquisition module is used by Acquiring, according to the preset relationship between the multi-bit multi-code encoding and the information to be transmitted, the information to be transmitted corresponding to the multi-bit multi-coded encoding; the amplitude demodulation module is connected to the signal identification module; The demodulation module is configured to perform amplitude demodulation on the fixed frequency signal for detecting
  • the active pen performs multi-bit multi-code encoding on the information to be transmitted and uses frequency modulation for each bit to generate a plurality of coded FM signals, that is, represented by multiple coded FM signals.
  • the information to be transmitted in the coding signal can transmit more coding information in a shorter time, and the information transmission efficiency between the active pen and the screen end is improved.
  • the information to be delivered includes: a tip pressure of the active pen or a function key of the active pen Press the signal.
  • the information to be transmitted is transmitted to the touch screen through the tip of the active pen, so that the touch screen can obtain specific operation information after demodulation.
  • multi-bit multi-encoding can be multi-bit octal encoding, which provides a more common multi-encoding.
  • the plurality of coded FM signals are sequentially arranged in sequence.
  • the touch screen can more conveniently decode the received multiple codes to obtain information to be transmitted corresponding to the plurality of codes.
  • FIG. 1 is a schematic diagram of a coding signal generated by an active pen of the prior art using amplitude modulation binary coding
  • FIG. 2 is a schematic diagram of a coding signal generated by a prior art active pen using frequency modulation
  • FIG. 3 is a flowchart of a signal generating method according to the first embodiment
  • FIG. 4 is a schematic diagram of a coding signal generated by a signal generation method according to the first embodiment
  • FIG. 5 is a flowchart of a signal analysis method according to a second embodiment
  • Figure 6 is a block schematic diagram of an active pen according to a third embodiment
  • FIG. 7 is a block schematic diagram of a touch screen according to a fourth embodiment.
  • a first embodiment of the present invention relates to a signal generating method mainly applied to an active pen.
  • FIG. 3 is a flow chart showing a signal generating method according to the first embodiment.
  • step 301 the active pen performs multi-bit multi-code encoding on the information to be delivered.
  • the information to be transmitted is detected by an active pen. If the active pen detects the information to be delivered, the operation is started; if the information to be delivered is not detected, the information to be transmitted needs to be continuously detected.
  • the information V to be transmitted detected by the active pen is the tip pressure, and then the detected tip pressure is multi-digit encoded.
  • the multi-digit coding is, for example, octal coding
  • the multi-digit multi-code coding is, for example, five-digit octal coding; that is, the detected information to be transmitted V is five-digit octal coded and corresponding to A, B, and C, respectively. , D, E five-digit octal code.
  • the present embodiment does not impose any limitation on the number of bits and the number of digits in the multi-bit multi-code encoding; and the specific type of the information to be transmitted in this embodiment is not limited, except that it can be the tip pressure of the active pen. It is also possible to press other information such as a signal for the function key of the active pen.
  • step 302 the active pen performs frequency modulation on the multi-ary code to respectively generate a plurality of coded FM signals.
  • frequency modulation is performed on the five-digit octal codes of A, B, C, D, and E according to the frequency modulation method.
  • the coded FM signals A1, B1, C1, D1, and E1 corresponding to the five octal codes of A, B, C, D, and E are respectively obtained.
  • step 303 the active pen integrates the preset fixed frequency signal for the nib position detection with the plurality of encoded FM signals to form a coded signal.
  • the fixed frequency signal used for the detection of the nib position can be adjusted by the active pen according to the preset modulation
  • the frequency modulation is generated, for example, by a predetermined fixed frequency of F, and the active pen generates a signal X for the tip position detection based on the fixed frequency.
  • the active pen sequentially arranges the fixed frequency signal for detecting the nib position and the plurality of encoded FM signals in order to integrate the formation of the coding signal.
  • the frequency modulation octal encoding method combines the fixed frequency signal for detecting the nib position with the detected nib pressure or the function key pressing signal for multi-bit octal encoding frequency modulation to form a frame.
  • the coded signal that is, the first part and the latter part of the coded signal are respectively a coordinate position FM signal and a plurality of coded FM signals of the information to be transmitted.
  • a fixed frequency signal for detecting the position of the nib may be inserted between the plurality of coded FM signals and integrated into a frame coding signal; that is, a fixed signal for detecting the position of the nib in the coding signal.
  • the frequency signal and the plurality of coded FM signals of the information to be transmitted are interspersed, as long as the receiving end synchronously demodulates according to the corresponding arrangement rule.
  • the active pen generates a coding signal according to a preset coding frequency, and generates a coding signal; that is, the active pen periodically transmits the coding signal.
  • the coding frequency can be understood as the refresh frequency of the information to be transmitted.
  • the resolution of the frequency demodulation is proportional to the time length of the signal.
  • Frequency modulation is performed in a frequency band with a certain bandwidth F. If the signal duration is t and the frequency resolution is ⁇ f, then the amount of information that can be transmitted is F/ ⁇ f; and the present embodiment adopts multi-bit multi-code encoding.
  • Modulation mode if it is divided into two t/2 signals for encoding, then the amount of information per bit is F/(2* ⁇ f), then the amount of information that can be transmitted by two bits is (F*F) /(4* ⁇ f* ⁇ f), so that more information can be transmitted under the same frequency modulation and demodulation capabilities in the same time.
  • the multi-bit multi-code encoding is performed by the information to be transmitted, so that the amount of information transmitted by the same number of bits is greatly increased; and, since the frequency modulation is performed for each multi-digit code, the demodulation obtained on the screen can be ensured.
  • the size of each bit of code is consistent, thus ensuring the accuracy of information transfer.
  • a second embodiment of the present invention relates to a signal analysis method, which is mainly applied to an electronic device
  • the touch screen included, such as a mobile phone and a tablet, are shown in FIG. 5.
  • the touch screen identifies a plurality of coded FM signals and a fixed frequency signal for pen tip position detection from the received code signals.
  • the touch screen needs to first detect whether there is a coding signal transmitted by the tip of the active pen. If the touch screen detects the coding signal transmitted by the tip of the active pen, the operation is started; if the touch screen is not detected The coded signal transmitted to the tip of the active pen continues to detect whether there is a coding signal transmitted by the tip of the active pen.
  • the touch screen when the touch screen detects the coding signal transmitted by the active pen, the touch screen starts to receive the coded signal, and in the process of synchronously receiving the coded signal, the A1 and B1 are identified from the coded signal. , C1, D1, E1 five frequency modulation signals and a fixed frequency signal X for pen tip position detection.
  • step 502 the touch screen respectively performs frequency demodulation on the plurality of encoded signals to obtain multi-bit multi-coded codes respectively corresponding to the plurality of encoded FM signals.
  • the touch screen separately performs frequency demodulation on the five frequency modulation signals to obtain A and B corresponding to the five frequency modulation signals respectively.
  • C, D, E five-digit octal code.
  • step 503 the touch screen acquires the to-be-transmitted information corresponding to the multi-bit multi-ary code according to the preset correspondence between the multi-bit multi-code encoding and the information to be transmitted.
  • the preset correspondence between the multi-digit multi-coded code and the information to be transmitted is pre-stored in the touch screen.
  • the information to be transmitted corresponding to the five-digit octal code of A, B, C, D, and E is V, that is, the touch screen is
  • the active pen receives the information V to be delivered.
  • step 504 the touch screen amplitude-demodulates the fixed frequency signal for the nib position detection to obtain the demodulation amplitude of the fixed frequency signal for the nib position detection.
  • the touch screen demodulates the fixed frequency signal X for the nib position detection according to the amplitude demodulation method, and obtains the demodulation amplitude F of the fixed frequency signal X for the nib position detection.
  • step 505 the touch screen calculates the nib position of the active pen according to the demodulation amplitude.
  • the ITO channel is arranged in the horizontal direction and the vertical direction on the touch screen to form a grid shape.
  • the ITO channel is equivalent to a signal receiving line.
  • the transmitted signal is received by multiple ITO channels at the location. The closer the signal is received on the ITO channel closer to the active pen tip signal emission point, the smaller the converse.
  • a third embodiment of the present invention relates to an active pen, and the specific structure is as shown in FIG. 6.
  • the active pen includes an information encoding module 601, a frequency modulation module 602, a signal integration module 603, and a pen end storage module 604.
  • the active pen in this embodiment is mainly used in conjunction with a smart terminal including a touch screen, such as a mobile phone or a tablet computer.
  • the information encoding module 601 is configured to perform multi-bit multi-code encoding on the information to be delivered;
  • the frequency modulation module 602 is connected to the information encoding module 601.
  • the frequency modulation module 602 is configured to perform frequency modulation on the multi-bit multi-coded code encoded by the information encoding module 601, respectively.
  • the signal integration module 603 is coupled to the frequency modulation module 602.
  • the signal integration module 603 is configured to integrate the preset fixed frequency signal for the nib position detection with the plurality of coded FM signals generated by the frequency modulation module 602 to form a coded signal.
  • the pen end storage module 604 is connected to the signal integration module 603; and is configured to store a fixed frequency signal for pen tip position detection.
  • the active pen further includes a signal transmitting module 605 connected to the signal integrating module 603.
  • the signal transmitting module 605 is configured to transmit the coded signal formed by integrating the signal integrating module 603.
  • the present embodiment is a system embodiment corresponding to the first embodiment, and the present embodiment can be implemented in cooperation with the first embodiment.
  • the related technical details mentioned in the first embodiment are still effective in the present embodiment, and are not described herein again in order to reduce repetition. Accordingly, the related art details mentioned in the present embodiment can also be applied to the first embodiment.
  • the problem of low efficiency of information transmission between the active pen and the screen is solved, and more information codes can be transmitted in a shorter time, and the accuracy of information transmission is also obtained. improve.
  • each module involved in this embodiment is a logic module.
  • a logical unit may be a physical unit, a part of a physical unit, or multiple physical entities. A combination of units is implemented.
  • the present embodiment does not introduce a unit that is not closely related to solving the technical problem proposed by the present invention, but this does not mean that there are no other units in the present embodiment.
  • the fourth embodiment of the present invention relates to a touch screen.
  • the touch screen in the present embodiment is mainly applicable to an intelligent terminal including a touch screen, such as a mobile phone and a tablet computer.
  • the specific structure is as shown in FIG. 7.
  • the touch screen includes: a signal receiving module 701, a signal identifying module 702, an information acquiring module 703, a frequency demodulating module 704, an amplitude demodulating module 705, a position calculating module 706, and a screen end storage module 707. .
  • the signal receiving module 701 is configured to receive the coding signal transmitted by the active pen signal transmission method
  • the signal identification module 702 is connected to the signal receiving module 701; the signal identifying module 702 is configured to identify a plurality of encoded FM signals from the coded signals transmitted by the active pen;
  • the frequency demodulation module 703 is connected to the signal identification module 702.
  • the frequency demodulation module 703 is configured to respectively perform frequency demodulation on the plurality of coded FM signals to obtain multi-bit multi-coded codes respectively corresponding to the plurality of coded FM signals;
  • the information acquisition module 704 is connected to the frequency demodulation module 703.
  • the information acquisition module 704 is configured to obtain the to-be-transmitted information corresponding to the multi-bit multi-ary code according to the preset relationship between the multi-bit multi-code encoding and the information to be transmitted.
  • the amplitude demodulation module 705 is coupled to the signal identification module 701; the amplitude demodulation module 705 is configured to perform amplitude demodulation on the fixed frequency signal for the nib position detection to obtain a demodulation amplitude of the fixed frequency signal for the nib position detection. .
  • the location calculation module 706 is coupled to the amplitude demodulation module 705; the location calculation module 706 calculates the nib position of the active pen based on the demodulation amplitude.
  • the screen storage module 707 is connected to the information acquisition module 704.
  • the screen storage module 707 is configured to store a preset relationship between the multi-digit multi-code encoding and the information to be transmitted.
  • the information to be transmitted may be: the tip pressure of the active pen or the function key pressing signal of the active pen.
  • the present embodiment can be implemented in cooperation with the second embodiment.
  • the related technical details mentioned in the second embodiment are still effective in the present embodiment, and the technical effects that can be achieved in the second embodiment can also be implemented in the present embodiment. To reduce the repetition, details are not described herein again. Accordingly, the related art details mentioned in the present embodiment can also be applied to the second embodiment.
  • the refresh rate of the screen of the mobile phone and the tablet is obtained. Significant improvement.
  • a program instructing related hardware may be completed by a program instructing related hardware, and the program is stored in a storage medium, and includes a plurality of instructions for making a device (which may be a single chip microcomputer). , a chip, etc. or a processor performs all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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  • Theoretical Computer Science (AREA)
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Abstract

一种信号生成方法、信号解析方法、主动笔及触控屏, 涉及电子信息技术领域。信号生成方法包括：所述主动笔对待传递信息进行多位多进制编码（301）；所述主动笔对所述多位多进制编码分别进行频率调制，以分别生成多个编码调频信号（302）；所述主动笔将预设的用于笔尖位置检测的固定频率信号与所述多个编码调频信号整合形成打码信号（303）。实现了在较短的时间能够传递更多的编码信息，解决了主动笔和屏端之间信息传递效率低的问题。

Description

信号生成方法、信号解析方法、主动笔及触控屏 技术领域
本发明涉及电子信息技术领域，特别涉及一种信号生成方法、信号解析方法、主动笔及触控屏。
背景技术
主动笔是一种通过笔尖发射信号，屏端接收信号并解调，得到笔尖定位和其他信息的电子产品。现有的主动笔一般除了笔尖定位的功能外，还带有压力检测和按键等功能。对于笔尖定位，主动笔只需要发射一段固定频率的信号，屏端通过按一定形状排列的感应通道接收信号，通过每一个感应通道检测到的信号大小来确定笔尖在屏幕的位置。而压力传感器、按键或者其他传感器都是在主动笔上，主动笔上的压力、按键或者其他信息就必须通过笔尖用一定的方法传递给屏端，在屏端解调之后得到这些信息。
目前，市面上的主动笔产品传递压力、按键或其他信息主要有两种方法，一种是采用二进制编码，如图1所示：其编码部分采用二进制编码，将坐标位置调频信号和压力或功能键按压信号整合形成打码信号，对每一位编码用幅度进行调制，通过1和0的组合编码来传递信息，根据解调得到的信号幅度大小来判定，超过一定大小判定为1，小于一定大小判定为0；另一种是采用频率调制，如图2所示：将坐标位置调频信号和笔尖压力或功能键按压信号整合形成打码信号，其信息用频率来进行调制，每一个频率大小代表一定的信息，将一定的信息通过一个对应的频率进行调制，然后在屏端通过解调频率得到信息。
但是，在实现本发明过程中，发明人发现现有技术中至少存在如下问题： 采用二进制编码方法的缺点主要是每一位编码只有0和1两种状态，信息含量较少，如果想要传递更多的信息就必须增加编码位数，这样信息编码占用的时间就长，刷新率会降低。而采用频率调制方法时，如果想要传递更多的信息，可以增加调频信号的带宽，有更大的频段宽度来编码信息，或者将频率调制地更加精细，带宽保持不变，增加频率分辨率来得到更多的信息，这都对硬件的频率调制和解调性能要求更高，并且解调的分辨率和信号的时长呈正比例关系，解调端如果要有更好的频率分辨率，信号的时间就必须更长。
因此，如何解决主动笔和屏端之间信息的传递效率，变得尤为重要。
发明内容
本发明实施方式的目的在于提供一种信号生成方法、信号解析方法、主动笔及触控屏，在不增加硬件负担的基础上，在较短的时间能够传递更多的编码信息，提高了主动笔和屏端之间信息的传递效率。
为解决上述技术问题，本发明的实施方式提供了一种信号生成方法，应用于主动笔，具体包括：所述主动笔对待传递信息进行多位多进制编码；所述主动笔对所述多位多进制编码分别进行频率调制，以分别生成多个编码调频信号；所述主动笔将预设的用于笔尖位置检测的固定频率信号与所述多个编码调频信号整合形成打码信号。
本发明的实施方式还提供了一种信号解析方法，应用于触控屏，具体包括：所述触控屏从接收的打码信号中识别出多个编码调频信号与所述用于笔尖位置检测的固定频率信号；其中，所述打码信号由主动笔的信号生成方法生成；所述触控屏对所述多个编码调频信号分别进行频率解调，以得到所述多个编码调频信号分别对应的多位多进制编码；所述触控屏根据所述多位多进制编码与待传递信息的预设对应关系，获取所述多位多进制编码对应的待传递信息；所述触控屏对所述用于笔尖位置检测的固定频率信号进行幅度解 调，以得到所述用于笔尖位置检测的固定频率信号的解调幅度；所述触控屏根据所述解调幅度计算所述主动笔的笔尖位置。
本发明的实施方式还提供了一种主动笔，包括：信息编码模块，用于对所述待传递信息进行多位多进制编码；频率调制模块，连接于所述信息编码模块；所述频率调制模块用于对所述多位多进制编码分别进行频率调制，以分别生成多个编码调频信号；信号整合模块，连接于所述频率调制模块；所述信号整合模块用于将预设的用于笔尖位置检测的固定频率信号与所述多个编码调频信号整合形成所述打码信号。
本发明的实施方式还提供了一种触控屏，包括：项所述的信号发射方法发射的打码信号；信号识别模块，连接于所述信号接收模块；所述信号识别模块用于从所述打码信号中识别出所述多个编码调频信号与所述用于笔尖位置检测的固定频率信号；频率解调模块，连接于所述信号识别模块；所述频率解调模块用于对所述多个编码调频信号分别进行频率解调，以得到所述多个编码调频信号分别对应的多位多进制编码；信息获取模块，连接于所述频率解调模块；所述信息获取模块用于根据所述多位多进制编码与待传递信息的预设关系，获取所述多位多进制编码对应的待传递信息；幅度解调模块，连接于所述信号识别模块；所述幅度解调模块用于对所述用于笔尖位置检测的固定频率信号进行幅度解调，以得到所述用于笔尖位置检测的固定频率信号的解调幅度；位置计算模块，连接于所述幅度解调模块；所述位置计算模块根据所述解调幅度计算所述主动笔的笔尖位置。
本发明实施方式相对于现有技术而言，主动笔通过对待传递信息进行多位多进制编码并对每一位采用频率调制，生成多个编码调频信号，即，以多个编码调频信号表示打码信号中的待传递信息，从而在较短的时间内能够传递更多的编码信息，提高了主动笔和屏端之间信息的传递效率。
另外，待传递信息包括：所述主动笔的笔尖压力或所述主动笔的功能键 按压信号。通过主动笔的笔尖将这些待传递信息传递给触控屏，使得触控屏可以在解调之后获取到具体的操作信息。
另外，多位多进制编码可为多位八进制编码，从而提供了一种较为常用的多进制编码。
另外，打码信号中，所述多个编码调频信号依次连续排列。通过这种依次联系排列的方式，触控屏在接收到打码信号后，可以更加方便的对接收到的多个编码进行解码，得到多个编码对应的待传递信息。
附图说明
图1是现有技术的主动笔采用调幅二进制编码生成的打码信号的示意图；
图2是现有技术的主动笔采用频率调制生成的打码信号的示意图；
图3是根据第一实施方式的信号生成方法的流程图；
图4是根据第一实施方式的信号生成方法生成的打码信号的示意图；
图5是根据第二实施方式的信号解析方法的流程图；
图6是根据第三实施方式的主动笔的方框示意图；
图7是根据第四实施方式的触控屏的方框示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的各实施方式进行详细的阐述。然而，本领域的普通技术人员可以理解，在本发明各实施方式中，为了使读者更好地理解本申请而提出了许多技术细节。但是，即使没有这些技术细节和基于以下各实施方式的种种变化和修改， 也可以实现本申请所要求保护的技术方案。
本发明的第一实施方式涉及一种信号生成方法，主要应用于主动笔。如图3所示是根据第一实施方式信号生成方法的流程图。
首先，在步骤301中，主动笔对待传递信息进行多位多进制编码。
具体地说，待传递信息由主动笔检测得到。如果主动笔检测到待传递信息，则开始执行本操作；如果没有检测到待传递信息，则需要继续检测待传递信息。
比如说，当主动笔的笔尖对终端设备的触控屏有操作的时候，主动笔检测到的待传递信息V为笔尖压力，然后将检测到的笔尖压力进行多位多进制编码。本实施例中，多进制编码例如为八进制编码，多位多进制编码例如为五位八进制编码；即，将检测到的待传递信息V进行五位八进制编码后分别对应A、B、C、D、E五位八进制编码。
需要说明的是，本实施方式对多位多进制编码中的位数与进制数不作任何限制；且本实施方式对待传递信息的具体类型也不作限制，除了可以为主动笔的笔尖压力，还可以为主动笔的功能键按压信号等其它信息。
接着，在步骤302中，主动笔对多进制编码分别进行频率调制，以分别生成多个编码调频信号。
比如说，针对上述步骤301的例子中得到的A、B、C、D、E五位八进制编码，按照频率调制的方式对A、B、C、D、E五位八进制编码分别进行频率调制，得到与A、B、C、D、E五位八进制编码分别对应的编码调频信号A1、B1、C1、D1、E1。
接着，在步骤303中，主动笔将预设的用于笔尖位置检测的固定频率信号与多个编码调频信号整合形成打码信号。
其中，用于笔尖位置检测的固定频率信号可以由主动笔根据预设的调制 频率调制生成，比如说，预设的固定频率为F，主动笔根据该固定频率生成用于笔尖位置检测的信号X。
主动笔将用于笔尖位置检测的固定频率信号与多个编码调频信号按照顺序依次排列，以整合形成打码信号。例如，如图4所示的调频八进制编码方式，将用于笔尖位置检测的固定频率信号与检测到的笔尖压力或功能键按压信号进行多位八进制编码频率调制后得到的调频信号整合形成一帧打码信号；即，打码信号的前一部分与后一部分分别为坐标位置调频信号与待传递信息的多个编码调频信号。但是，在实际应用中，也可以将用于笔尖位置检测的固定频率信号插在多个编码调频信号中间，并整合成一帧打码信号；即，打码信号中，用于笔尖位置检测的固定频率信号与待传递信息的多个编码调频信号穿插排列，只要接收端按照对应的排列规则同步解调即可。
在实际应用中，主动笔会根据预设的打码频率生成打码信号，并将打码信号发生出去；即，主动笔周期性地发射打码信号。其中，打码频率可以理解为待传递信息的刷新频率。
对于现有技术中的频率单一的频率调制方式，在相同的硬件能力下，频率解调的分辨率是跟信号的时间长度成正比关系。在一定带宽为F的频带内进行频率调制，如果信号时长为t，频率分辨力为△f，那么其可以传递的信息量为F/△f；而本实施方式通过采用多位多进制编码调制方式，若分为两个t/2的信号进行编码，那么每一位编码的信息量为F/(2*△f)，那么两位编码所能传递的信息量为(F*F)/(4*△f*△f)，从而在相同的时间内，相同的频率调制和解调能力下，能够传递更多的信息。
本实施方式通过对待传递信息进行多位多进制编码，使相同位数传递的信息量大增；并且，由于对每位多进制编码进行频率调制，可以保证屏幕上各处解调得到的每位编码的大小是一致的，从而保证了信息传递的准确性。
本发明的第二实施方式涉及一种信号解析方法，主要应用于电子设备所 包括的触控屏，电子设备例如为手机和平板电脑，如图5所示。
首先，在步骤501中，触控屏从接收到的打码信号中识别出多个编码调频信号与用于笔尖位置检测的固定频率信号。
具体地说，触控屏需要先检测是否有主动笔的笔尖发射的打码信号，如果触控屏检测到主动笔的笔尖发射的打码信号，则开始执行本操作；如果触控屏没有检测到主动笔的笔尖发射的打码信号，则继续检测是否有主动笔的笔尖发射的打码信号。
比如说，当触控屏检测到有主动笔发射的打码信号后，触控屏开始接收该打码信号，在同步接收打码信号的过程中，从该打码信号中识别出A1、B1、C1、D1、E1五个调频信号与用于笔尖位置检测的固定频率信号X。
接着，在步骤502中，触控屏对多个编码信号分别进行频率解调，以得到多个编码调频信号分别对应的多位多进制编码。
比如说，针对上述案例得到的A1、B1、C1、D1、E1五个调频信号，触控屏对这5个调频信号分别进行频率解调，得到与这五个调频信号分别对应的A、B、C、D、E五位八进制编码。
接着，在步骤503中，触控屏根据多位多进制编码与待传递信息的预设对应关系，获取多位多进制编码对应的待传递信息。
触控屏中预先储存有多位多进制编码与待传递信息的预设对应关系。比如说，根据该多位多进制编码与待传递信息的预设对应关系得到：A、B、C、D、E这五位八进制编码对应的待传递信息为V，即，触控屏从主动笔接收到待传递信息V。
接着，在步骤504中，触控屏对用于笔尖位置检测的固定频率信号进行幅度解调，以得到用于笔尖位置检测的固定频率信号的解调幅度。
比如说，针对上述实施例得到的用于笔尖位置检测的固定频率信号X， 触控屏对用于笔尖位置检测的固定频率信号X按照幅度解调的方式进行解调，得到用于笔尖位置检测的固定频率信号X的解调幅度F。
接着，在步骤505中，触控屏根据解调幅度计算主动笔的笔尖位置。
具体的说，触控屏上横向和竖向上分别排列着ITO通道，形成网格状。ITO通道相当于一根根的信号接收线，当主动笔放到触控屏的某个位置时，其发射的信号就会被所处位置的多根ITO通道接收到。离主动笔笔尖信号发射点越近的ITO通道上接收到的信号越大，反之越小。通过解调每一根ITO通道上接收到的信号幅度大小，通过插值精确计算横向或者竖向上信号幅度最大的地方，就可以计算得到笔尖横向和竖向上的精确位置。
通过本实施方式，实现了在相同的频率调制和解调能力的情况下，能够传递更多的信息，从而也有效提高了主动笔和触控屏之间信息的传递效率。
上面各种方法的步骤划分，只是为了描述清楚，实现时可以合并为一个步骤或者对某些步骤进行拆分，分解为多个步骤，只要包括相同的逻辑关系，都在本专利的保护范围内；对算法中或者流程中添加无关紧要的修改或者引入无关紧要的设计，但不改变其算法和流程的核心设计都在该专利的保护范围内。
本发明第三实施方式涉及一种主动笔，具体结构如图6所示。
主动笔包括：信息编码模块601、频率调制模块602、信号整合模块603、笔端存储模块604。
需要说明的是，本实施方式中的主动笔，主要用于与包括触控屏的智能终端配合使用，智能终端例如为手机、平板电脑。
信息编码模块601，用于对待传递信息进行多位多进制编码；
频率调制模块602，连接于信息编码模块601；频率调制模块602用于对信息编码模块601编码后的多位多进制编码分别进行频率调制，以分别生 成多个编码调频信号；
信号整合模块603，连接于频率调制模块602；信号整合模块603用于将预设的用于笔尖位置检测的固定频率信号与频率调制模块602生成的多个编码调频信号整合形成打码信号。
笔端存储模块604，连接于信号整合模块603；用于储存用于笔尖位置检测的固定频率信号。
于实际上的，主动笔还包括信号发射模块605，连接于信号整合模块603；信号发射模块605用于将信号整合模块603整合形成的打码信号发射出去。
不难发现，本实施方式为与第一实施方式相对应的系统实施例，本实施方式可与第一实施方式互相配合实施。第一实施方式中提到的相关技术细节在本实施方式中依然有效，为了减少重复，这里不再赘述。相应地，本实施方式中提到的相关技术细节也可应用在第一实施方式中。
通过本实施方式中的主动笔，解决了现有主动笔和屏端信息传递效率低的问题，实现了在较短的时间内能够传递更多的信息编码，并且信息传递的准确性也得到了提高。
值得一提的是，本实施方式中所涉及到的各模块均为逻辑模块，在实际应用中，一个逻辑单元可以是一个物理单元，也可以是一个物理单元的一部分，还可以以多个物理单元的组合实现。此外，为了突出本发明的创新部分，本实施方式中并没有将与解决本发明所提出的技术问题关系不太密切的单元引入，但这并不表明本实施方式中不存在其它的单元。
本发明第四实施方式涉及一种触控屏，本实施方式中的触控屏，主要适用于包括触控屏的智能终端，智能终端例如手机和平板电脑。具体结构如图7所示，触控屏包括：信号接收模块701、信号识别模块702、信息获取模块703、频率解调模块704、幅度解调模块705、位置计算模块706、屏端存储模块707。
信号接收模块701，用于接收主动笔信号发射方法发射的打码信号；
信号识别模块702，连接于信号接收模块701；信号识别模块702用于从主动笔发射的打码信号中识别出多个编码调频信号；
频率解调模块703，连接于信号识别模块702；频率解调模块703用于对多个编码调频信号分别进行频率解调，以得到多个编码调频信号分别对应的多位多进制编码；
信息获取模块704，连接于频率解调模块703；信息获取模块704用于根据多位多进制编码与待传递信息的预设关系，获取多位多进制编码对应的待传递信息。
幅度解调模块705，连接于信号识别模块701；幅度解调模块705用于对用于笔尖位置检测的固定频率信号进行幅度解调，以得到用于笔尖位置检测的固定频率信号的解调幅度。
位置计算模块706，连接于幅度解调模块705；位置计算模块706根据解调幅度计算主动笔的笔尖位置。
屏端存储模块707，连接于信息获取模块704；屏端存储模块707用于储存多位多进制编码与待传递信息的预设关系。
需要说明的是，待传递信息可以为：主动笔的笔尖压力或主动笔的功能键按压信号。
由于第二实施方式与本实施方式相互对应，因此本实施方式可与第二实施方式互相配合实施。第二实施方式中提到的相关技术细节在本实施方式中依然有效，在第二实施方式中所能达到的技术效果在本实施方式中也同样可以实现，为了减少重复，这里不再赘述。相应地，本实施方式中提到的相关技术细节也可应用在第二实施方式中。
通过本实施方式中的触控屏，使得手机和平板电脑屏端的刷新率得到了 显著的提升。
本领域技术人员可以理解实现上述实施例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，该程序存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域的普通技术人员可以理解，上述各实施方式是实现本发明的具体实施例，而在实际应用中，可以在形式上和细节上对其作各种改变，而不偏离本发明的精神和范围。

Claims (10)

  1. 一种信号生成方法，其特征在于，应用于主动笔，所述信号生成方法包括：
    所述主动笔对待传递信息进行多位多进制编码；
    所述主动笔对所述多位多进制编码分别进行频率调制，以分别生成多个编码调频信号；
    所述主动笔将用于笔尖位置检测的固定频率的信号与所述多个编码调频信号整合形成打码信号。
  2. 根据权利要求1所述的信号生成方法，其特征在于，所述待传递信息包括：所述主动笔的笔尖压力和/或所述主动笔的功能键按压信号。
  3. 根据权利要求1所述的信号生成方法，其特征在于，所述多位多进制编码为多位八进制编码。
  4. 根据权利要求1所述的信号生成方法，其特征在于，在所述打码信号中，所述多个编码调频信号依次连续排列。
  5. 根据权利要求1所述的信号生成方法，其特征在于，所述用于主动笔笔尖位置检测的固定频率信号由所述主动笔根据预设的频率生成。
  6. 一种信号解析方法，其特征在于，应用于触控屏，所述信号解析方法包括：
    所述触控屏从接收的打码信号中识别出多个编码调频信号与所述用于笔尖位置检测的固定频率信号；其中，所述打码信号由主动笔根据权利要求1至5中任意一项所述的信号生成方法生成；
    所述触控屏对所述多个编码调频信号分别进行频率解调，以得到所述多个编码调频信号分别对应的多位多进制编码；
    所述触控屏根据所述多位多进制编码与待传递信息的预设对应关系，获取所述多位多进制编码对应的待传递信息；
    所述触控屏对所述用于笔尖位置检测的固定频率信号进行幅度解调，以得到所述用于笔尖位置检测的固定频率信号的解调幅度；
    所述触控屏根据所述解调幅度计算所述主动笔的笔尖位置。
  7. 一种主动笔，其特征在于，应用于权利要求1至5中任意一项所述的信号生成方法，所述主动笔包括：
    信息编码模块，用于对所述待传递信息进行多位多进制编码；
    频率调制模块，连接于所述信息编码模块；所述频率调制模块用于对所述多位多进制编码分别进行频率调制，以分别生成多个编码调频信号；
    信号整合模块，连接于所述频率调制模块；所述信号整合模块用于将预设的用于笔尖位置检测的固定频率信号与所述多个编码调频信号整合形成所述打码信号。
  8. 根据权利要求7所述的主动笔，其特征在于，所述主动笔还包括：
    笔端存储模块，连接于所述信号整合模块；所述笔端存储模块用于储存所述用于笔尖位置检测的固定频率信号。
  9. 一种触控屏，其特征在于，应用于权利要求6所述的信号解析方法，所述触控屏包括：
    信号接收模块，用于接收主动笔根据权利要求1至5中任意一项所述的信号发射方法发射的打码信号；
    信号识别模块，连接于所述信号接收模块；所述信号识别模块用于从所述打码信号中识别出所述多个编码调频信号与所述用于笔尖位置检测的固定频率信号；
    频率解调模块，连接于所述信号识别模块；所述频率解调模块用于对所 述多个编码调频信号分别进行频率解调，以得到所述多个编码调频信号分别对应的多位多进制编码；
    信息获取模块，连接于所述频率解调模块；所述信息获取模块用于根据所述多位多进制编码与待传递信息的预设关系，获取所述多位多进制编码对应的待传递信息；
    幅度解调模块，连接于所述信号识别模块；所述幅度解调模块用于对所述用于笔尖位置检测的固定频率信号进行幅度解调，以得到所述用于笔尖位置检测的固定频率信号的解调幅度；
    位置计算模块，连接于所述幅度解调模块；所述位置计算模块根据所述解调幅度计算所述主动笔的笔尖位置。
  10. 根据权利要求9所述的触控屏，其特征在于，所述触控屏还包括：
    屏端存储模块，连接于所述信息获取模块；所述屏端存储模块用于储存所述多位多进制编码与待传递信息的预设关系。
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110832447A (zh) * 2019-09-30 2020-02-21 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
CN110959150A (zh) * 2019-09-30 2020-04-03 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
CN112558797A (zh) * 2021-02-19 2021-03-26 深圳市千分一智能技术有限公司 主动笔及其控制方法、装置以及计算机可读存储介质
US11567613B2 (en) 2019-07-02 2023-01-31 Shenzhen GOODIX Technology Co., Ltd. Signal processing system, chip and active stylus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10466834B2 (en) * 2017-05-15 2019-11-05 Leading Ui Co., Ltd. Touch system for finger and stylus pen touch recognition
CN112306263B (zh) * 2019-07-30 2025-01-21 幸芯科技有限公司 主动式触控笔及其无线信号产生方法
EP3800776B1 (en) * 2019-08-08 2022-10-05 Shenzhen Goodix Technology Co., Ltd. Signal driving circuit generating positive and negative voltages, chip, active pen, and signal driving method
CN110968208B (zh) * 2019-11-28 2023-06-23 京东方科技集团股份有限公司 触控笔、触控笔检测方法和触控系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102123117A (zh) * 2010-01-07 2011-07-13 无锡爱睿芯电子有限公司 调制装置及方法
WO2012139341A1 (zh) * 2011-04-12 2012-10-18 中兴通讯股份有限公司 手写笔、移动终端及利用手写笔在移动终端上操作的方法
CN103677339A (zh) * 2013-11-25 2014-03-26 泰凌微电子（上海）有限公司 电磁笔、电磁触控接收装置以及两者组成的无线通信系统
CN105468170A (zh) * 2014-08-13 2016-04-06 比亚迪股份有限公司 电容笔与触摸屏之间的数据传输方法、系统和装置
CN105607765A (zh) * 2015-12-29 2016-05-25 广州磐信计算机科技有限公司 一种电磁感应式多通道笔迹输入系统及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7653867B2 (en) * 2005-03-01 2010-01-26 The Texas A&M University System Multi-source data encoding, transmission and decoding using Slepian-Wolf codes based on channel code partitioning
US8536471B2 (en) * 2008-08-25 2013-09-17 N-Trig Ltd. Pressure sensitive stylus for a digitizer
US10031590B2 (en) 2012-10-16 2018-07-24 Atmel Corporation Active stylus with a parallel communication channel
US10216330B2 (en) 2014-07-02 2019-02-26 3M Innovative Properties Company Touch systems and methods including rejection of unintentional touch signals

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102123117A (zh) * 2010-01-07 2011-07-13 无锡爱睿芯电子有限公司 调制装置及方法
WO2012139341A1 (zh) * 2011-04-12 2012-10-18 中兴通讯股份有限公司 手写笔、移动终端及利用手写笔在移动终端上操作的方法
CN103677339A (zh) * 2013-11-25 2014-03-26 泰凌微电子（上海）有限公司 电磁笔、电磁触控接收装置以及两者组成的无线通信系统
CN105468170A (zh) * 2014-08-13 2016-04-06 比亚迪股份有限公司 电容笔与触摸屏之间的数据传输方法、系统和装置
CN105607765A (zh) * 2015-12-29 2016-05-25 广州磐信计算机科技有限公司 一种电磁感应式多通道笔迹输入系统及方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11567613B2 (en) 2019-07-02 2023-01-31 Shenzhen GOODIX Technology Co., Ltd. Signal processing system, chip and active stylus
CN110832447A (zh) * 2019-09-30 2020-02-21 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
CN110959150A (zh) * 2019-09-30 2020-04-03 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
WO2021062641A1 (zh) * 2019-09-30 2021-04-08 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
US11307703B2 (en) 2019-09-30 2022-04-19 Shenzhen GOODIX Technology Co., Ltd. Method for transmitting and receiving signal, processor chip, active stylus and touch screen
CN110832447B (zh) * 2019-09-30 2023-06-13 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
CN110959150B (zh) * 2019-09-30 2023-11-07 深圳市汇顶科技股份有限公司 信号发射与接收方法、处理器芯片、主动笔、触摸屏
CN112558797A (zh) * 2021-02-19 2021-03-26 深圳市千分一智能技术有限公司 主动笔及其控制方法、装置以及计算机可读存储介质

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