WO2016015211A1 - Touch method and capacitive touch device - Google Patents

Touch method and capacitive touch device Download PDF

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Publication number
WO2016015211A1
WO2016015211A1 PCT/CN2014/083175 CN2014083175W WO2016015211A1 WO 2016015211 A1 WO2016015211 A1 WO 2016015211A1 CN 2014083175 W CN2014083175 W CN 2014083175W WO 2016015211 A1 WO2016015211 A1 WO 2016015211A1
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WO
WIPO (PCT)
Prior art keywords
signal
module
output
wireless
radio frequency
Prior art date
Application number
PCT/CN2014/083175
Other languages
French (fr)
Chinese (zh)
Inventor
符谋政
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/083175 priority Critical patent/WO2016015211A1/en
Publication of WO2016015211A1 publication Critical patent/WO2016015211A1/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input 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
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0442Digitisers, 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 computers, and in particular, to a touch method and a capacitive touch device. Background technique
  • Touch screen devices such as smartphones and tablets mainly use capacitive touch screens.
  • the touch screen device can be controlled by a touch operation of a capacitive stylus.
  • the capacitive stylus includes a passive stylus and an active stylus.
  • Passive stylus pens are made of conductive cotton, rubber coated with conductive paint, conductive fibers, transparent discs, etc., and in general, the tip is thick.
  • the tip of the passive stylus touches the touch screen, the tip is conductive, and the touch screen device determines the touch position of the stylus based on the conductive current on the touch screen.
  • the active stylus has a thin tip, and a battery is installed in the pen body. The battery supplies power to the control circuit in the stylus, and the power signal is amplified by the driving circuit in the stylus, and finally output to the pen.
  • the touch screen device determines the touch position of the stylus on the touch screen.
  • Passive stylus pens are thicker and cannot be accurately positioned.
  • the active stylus has a thinner tip.
  • the active stylus requires a battery to be installed in the pen body.
  • the diameter of the pen body is limited by the diameter of the battery, and the stylus cannot be flexibly designed. Summary of the invention
  • an embodiment of the present invention provides a touch method and a capacitive touch control device.
  • the technical solution is as follows:
  • a capacitive touch device comprising: a wireless signal receiving module, a signal conversion module, and a signal output module; An output end of the wireless signal receiving module is connected to an input end of the signal conversion module, and an output end of the signal conversion module is connected to the signal output module;
  • the wireless signal receiving module is configured to receive a radio frequency signal of a specified frequency, convert the wireless radio frequency signal into a DC power signal, and output the DC power signal to the signal conversion module;
  • the signal conversion module is configured to convert the DC power signal into an alternating signal, and output the alternating signal to the signal output module;
  • the signal output module is configured to output the alternating signal when in contact with the touch screen device.
  • the device further includes a detection module
  • the detecting module is connected to an input end of the wireless signal receiving module, and the detecting module is configured to detect a distance between the capacitive touch device and the touch screen device.
  • the wireless signal receiving module includes: a receiving antenna, a rectifying module, a voltage processing module, and Control module
  • the receiving antenna is connected to an input end of the rectifier module, an output end of the rectifier module is connected to an input end of the voltage processing module, and the control module is connected to an input end of the voltage processing module, the voltage An output of the processing module is coupled to an input of the signal conversion module.
  • the signal conversion module includes : control circuit, modulation circuit and drive circuit;
  • a touch method is provided, where the method is applied to a capacitive touch device,
  • the capacitive touch device includes a wireless signal receiving module, a signal conversion module, and a signal output module, and the method includes:
  • the wireless signal receiving module receives a radio frequency signal of a specified frequency, converts the radio frequency signal into a DC power signal, and outputs the DC power signal to the signal conversion module; the signal conversion module converts the DC Converting the power signal into an alternating signal, and outputting the alternating signal to the signal output module;
  • the capacitive touch device further includes a detection module
  • the method further includes: the detecting module detecting a distance between the capacitive touch device and the touch screen device;
  • the wireless signal receiving module performs the step of receiving a radio frequency signal of a specified frequency when the detected distance is less than or equal to the distance threshold.
  • the wireless signal receiving module includes: a receiving antenna, a rectifying module, a voltage processing module, and Control module
  • the wireless signal receiving module receives a radio frequency signal of a specified frequency, converts the radio frequency signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
  • the rectifier module rectifies the wireless radio frequency signal, and outputs the rectified signal to the voltage processing module;
  • the voltage processing module performs voltage stabilization and filtering processing on the rectified signal, and controls the voltage-stabilized and filtered signal according to the control signal of the control module to obtain a DC power signal, and the DC power source is The signal is output to the signal conversion module.
  • the signal conversion module includes: a control circuit, a modulation circuit, and a driving circuit;
  • the signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
  • the control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit
  • the modulation circuit and the drive circuit convert the DC power signal into an alternating signal; the drive circuit outputs the alternating signal to the signal output module.
  • the wireless signal receiving module can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a direct current power signal.
  • the DC power signal is converted into an alternating signal detectable by the touch panel device by the signal conversion module, and the alternating signal is output through the signal output module.
  • the capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery.
  • FIG. 1 is a schematic structural diagram of a capacitive touch device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of another capacitive touch device according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of another capacitive touch device according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a capacitive touch device according to an embodiment of the present invention
  • FIG. 6 is a flow chart of a touch method according to an embodiment of the present invention
  • FIG. 7 is a flowchart of another touch method according to an embodiment of the present invention. detailed description
  • 1 is a capacitive touch device according to an embodiment of the present invention, the device includes: a wireless signal receiving module 1, a signal conversion module 2, and a signal output module 3;
  • the output end of the wireless signal receiving module 1 is connected to the input end of the signal conversion module 2, and the output end of the signal conversion module 2 is connected to the signal output module 3;
  • the wireless signal receiving module 1 is configured to receive a radio frequency signal of a specified frequency, convert the radio frequency signal into a DC power signal, and output the DC power signal to the signal conversion module 2;
  • the signal conversion module 2 is configured to convert the DC power signal into an alternating signal, and output the alternating signal to the signal output module 3;
  • the signal output module 3 is for outputting the alternating signal when in contact with the touch screen device.
  • the touch screen device includes a mobile phone, a tablet computer, an e-reader, and the like.
  • the capacitive touch device can be designed in the form of a stylus, and can be designed in other forms, which is not specifically limited in the embodiment of the present invention.
  • the wireless radio frequency signal may be sent by the touch screen device, and the capacitive touch device may receive the wireless radio frequency signal by using the wireless signal receiving module 1 and convert the wireless radio frequency signal into a DC power signal.
  • the capacitive touch device may be more easily accommodated in the touch screen device.
  • the device further includes a detecting module 4;
  • the detecting module 4 is connected to the input end of the wireless signal receiving module 1, and the detecting module 4 is configured to detect the distance between the capacitive touch device and the touch screen device.
  • the distance between the capacitive touch device and the touch screen device is actually the distance between the signal output module 3 and the touch screen device, and the method for detecting the distance between the signal output module 3 and the touch screen device can be It is considered that the distance between the signal output module 3 and the touch screen of the touch screen device is detected by the hovering touch technology, or the capacitive touch device and the touch are detected by the non-contact radio frequency identification (RFID) technology or the short-range wireless communication (NFC) technology.
  • RFID radio frequency identification
  • NFC short-range wireless communication
  • the capacitive touch device may further include a detecting module 4, when the detecting module 4 detects that the distance between the capacitive touch device and the touch screen device is less than the distance threshold, the wireless radio frequency signal
  • the wireless signal receiving module 1 of the capacitive touch device starts working, and the capacitive touch device frequently receives signals with weak signal strength, thereby improving the capacitive touch device. life.
  • the detection module 4 may not be included in the capacitive touch device. When the detection module 4 is not included, the wireless signal receiving module 1 continuously receives the wireless radio frequency signal.
  • the wireless signal receiving module 1 includes: a receiving antenna 11, a rectifier module 12, a voltage processing module 13, and a control module 14;
  • the receiving antenna 11 is connected to the input end of the rectifier module 12, the output end of the rectifier module 12 is connected to the input end of the voltage processing module 13, the control module 14 is connected to the input end of the voltage processing module 13, and the output and signal of the voltage processing module 13 are connected.
  • the input of the conversion module 2 is connected.
  • the receiving antenna 11 can be a simple antenna or a coil, which reduces the cost of the capacitive touch device.
  • the voltage that can be received on the touch screen of the touch screen device is constant, and in the embodiment of the invention, the touch screen device is touched by the capacitive touch device, that is, when the capacitor When the touch device is in contact with the touch screen of the touch screen device, the capacitive touch device can output a voltage to the touch screen, and touch the touch device through the output voltage. Therefore, in order to ensure that the voltage output by the capacitive touch device is within a voltage range acceptable to the touch screen, the voltage of the DC power signal output by the voltage processing module 13 can be controlled by the control module 14.
  • FIG. 4 is a circuit diagram of a wireless signal receiving module 1.
  • One end of the inductor L is connected to the first input end of the rectifier D, and the other end of the inductor L is connected to the second input end of the rectifier D.
  • the first output of the rectifier D The terminal is connected to one end of the electrolytic capacitor C1 and grounded.
  • the second output end of the rectifier D is respectively connected to the other end of the electrolytic capacitor C1 and one end of the capacitor C2, and the other end of the capacitor C2 is also grounded.
  • One end of the capacitor C2 is also connected to one end of the resistor R1, one end of the resistor R2, the emitter of the transistor Q1, one end of the resistor R4, and the anode of the LED2, and the other end of the resistor R1 is connected to the first fixed end of the sliding varistor RP.
  • the other end of the sliding varistor RP is connected to the anode of the varactor diode TL1, the cathode of the varactor diode TL1 is connected to one end of the resistor R9, and the varactor diode TL1 is also connected to the sliding end of the sliding varistor RP, and the anode of the varactor diode TL1 Ground.
  • the other end of the resistor R2 is connected to one end of the resistor R3 and the base of the transistor Q1, and the other end of the resistor R3 is connected to the output terminal of the amplifier IC.
  • the collector of the transistor Q1 is connected to the anode of the light-emitting diode LED1, and the cathode of the light-emitting diode LED1 is grounded.
  • the other end of the resistor R4 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the emitter of the transistor Q3, and the switch SW is connected to both ends of the resistor R5.
  • the base of the transistor Q3 is respectively connected to the cathode of the LED2 and the end of the resistor R6, the other end of the resistor R6 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 is grounded, and the base of the transistor Q2 is connected to one end of the resistor R7.
  • One end of the resistor R7 is connected to the output of the amplifier IC.
  • the positive input terminal of the amplifier IC is connected to the other end of the electron R9, the reverse input end of the amplifier IC is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the capacitor C3, and the other end of the capacitor C3 is connected to the transistor Q3.
  • the inductor L can be used as the receiving antenna 11 for receiving the radio frequency signal transmitted by the touch screen device; the four diodes constitute the rectifier 0, and can be used as the rectifying module 12 for rectifying the received radio frequency signal.
  • the electrolytic capacitor C1 and the capacitor C2 are used as part of the voltage processing module 13 for filtering the rectified DC power signal.
  • the subsequent circuit controls the filtered DC power signal to change the voltage magnitude and current magnitude of the signal output by the voltage processing module 13.
  • a signal can be output between the capacitor C3 and the resistor R8 as an output signal of the voltage processing module 13, which will not be explained in detail herein.
  • the signal conversion module 2 includes: a control circuit 21, a modulation circuit 22, and a drive circuit 23;
  • the input terminal of the control circuit 21 is connected to the output terminal of the wireless signal receiving module 1, the output terminal of the control circuit 21 is connected to the input terminal of the modulation circuit 22, and the output terminal of the modulation circuit 22 is connected to the input terminal of the drive circuit 23.
  • the output end of the wireless signal receiving module 1 is the output end of the voltage processing module 13, so that the input end of the control circuit 21 is connected to the output end of the wireless signal receiving module 1, that is, the input terminal and the voltage of the control circuit 21 The output of the processing module 13 is connected.
  • the control circuit 21 can control the DC power signal outputted by the wireless signal receiving module 1 to input the DC power signal into the modulation circuit 22, and then the modulation circuit 22 and the drive circuit 23 convert the DC power signal into an intersection. Change the signal.
  • the capacitive touch device can not only open the application installed in the touch screen device, input text, etc., but also perform some other functions.
  • the structures of the control circuit 21, the modulation circuit 22, and the driving circuit 23 in the capacitive touch device are different, and the control circuit 21, the modulation circuit 22, and the driving circuit are in the embodiment of the present invention.
  • the specific structure of 23 is not specifically limited.
  • the signal output module 3 may include an electrode and a rubber pen tip. One end of the electrode is connected to the output end of the driving circuit 23. The other end of the electrode is mounted with a rubber pen tip. The rubber pen tip contacts or approaches the touch screen of the touch screen device to make a touch. The screen device determines the touch position of the capacitive touch device, and then touches the touch device.
  • the wireless signal receiving module in the capacitive touch device can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a DC power signal.
  • the DC power signal is converted into an alternating signal detectable by the touch screen device by the signal conversion module, and the alternating signal is output through the signal output module.
  • the capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery.
  • FIG. 6 is a flowchart of a touch method according to an embodiment of the present invention. The method is applied to a capacitive touch device, and the capacitive touch device comprises a wireless signal receiving module, a signal conversion module and a signal output module. Referring to Figure 6, the method includes:
  • Step 601 The wireless signal receiving module receives the wireless RF signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module.
  • Step 602 The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module.
  • Step 603 The signal output module outputs the alternating signal when contacting the touch screen device to implement touch.
  • the wireless signal receiving module can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a direct current power signal.
  • the DC power signal is converted into an alternating signal detectable by the touch panel device by the signal conversion module, and the alternating signal is output through the signal output module.
  • the capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery.
  • the capacitive touch device further includes a detection module
  • the method further includes: detecting, by the detecting module, a distance between the capacitive touch device and the touch screen device;
  • the wireless signal receiving module When the detected distance is less than or equal to the distance threshold, the wireless signal receiving module performs the step of receiving the radio frequency signal of the specified frequency.
  • the wireless signal receiving module includes: a receiving antenna, a rectifier module, a voltage processing module, and a control module;
  • the wireless signal receiving module receives the wireless RF signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
  • the receiving antenna receives the radio frequency signal of the specified frequency, and outputs the radio frequency signal to the rectifying module;
  • the rectifier module rectifies the wireless RF signal, and outputs the rectified signal to voltage processing Module
  • the voltage processing module performs voltage stabilization and filtering processing on the rectified signal, and controls the voltage-stabilized and filtered signal according to the control signal of the control module to obtain a DC power signal, and outputs the DC power signal to the signal conversion. Module.
  • the signal conversion module includes: a control circuit, a modulation circuit, and a driving circuit;
  • the signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
  • the control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit; the modulation circuit and the driving circuit convert the DC power signal into an alternating signal;
  • the drive circuit outputs the alternating signal to the signal output module.
  • FIG. 7 is a flowchart of a touch method according to an embodiment of the present invention.
  • the method is applied to a capacitive touch control device, and the capacitive touch device comprises a detection module, a wireless signal receiving module, a signal conversion module and a signal output module. See Figure 7, which includes:
  • Step 701 The detecting module detects a distance between the capacitive touch device and the touch screen device.
  • the detecting module detects the distance between the capacitive touch device and the touch screen device, that is, detects the distance between the signal output module of the capacitive touch device and the touch screen of the touch screen device.
  • step 701 is optional, that is, may be performed before or after the wireless signal receiving module receives the radio frequency signal of the specified frequency.
  • the wireless signal receiving module can continuously receive the wireless radio frequency signal.
  • Step 702 When the detected distance is less than or equal to the distance threshold, the wireless signal receiving module receives the wireless frequency signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module.
  • the wireless signal receiving module includes: a receiving antenna, a rectifier module, a voltage processing module, and a control
  • the wireless signal receiving module receives the wireless RF signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
  • the receiving antenna receives the radio frequency signal of the specified frequency, and outputs the radio frequency signal to the rectifying module; the rectifying module rectifies the radio frequency signal, and outputs the rectified signal to the voltage processing module; the voltage processing module rectifies
  • the signal is regulated and filtered, and the regulated and filtered signals are controlled according to the control signal of the control module to obtain a DC power signal, and the DC power signal is output to the signal conversion module.
  • the voltage that can be accepted on the touch screen of the touch screen device is constant. Therefore, the voltage of the DC power signal outputted by the voltage processing module 13 can be controlled by the control module 14 to fix the voltage of the DC power signal. .
  • the radio frequency signal of the specified frequency is sent by the touch screen device, and the capacitive touch device uses the radio frequency signal sent by the touch screen device to provide power for the capacitive touch device, and the battery is not required to be installed in the capacitive touch device. Therefore, it is possible to flexibly design a capacitive touch device.
  • the wireless signal receiving module may not receive the radio frequency signal, thereby improving The life of capacitive touch devices.
  • Step 703 The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module.
  • the signal conversion module includes: a control circuit, a modulation circuit, and a driving circuit; the signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
  • the control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit; the modulation circuit and the driving circuit convert the DC power signal into an alternating signal, and the driving circuit outputs the alternating signal to the signal output module.
  • the DC signal is not recognized on the touch screen, and only the AC signal can be identified. Therefore, the DC power signal is converted into an alternating signal, that is, the DC signal is converted into an AC signal.
  • the embodiment of the present invention does not specifically describe this.
  • Step 704 The signal output module outputs the alternating signal when contacting the touch screen device to implement touch.
  • the touch screen device can recognize the alternating signal, and determine the touch position of the capacitive touch device according to the alternating signal. Based on the touch position and the alternating signal, performing a corresponding touch operation to implement touch on the touch screen device.
  • the touch of the capacitive touch device may be determined based on the current of the alternating signal on the touch screen device.
  • the location of the present invention is not explained in detail.
  • the wireless signal receiving module can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a direct current power signal.
  • the DC power signal is converted into an alternating signal detectable by the touch panel device by the signal conversion module, and the alternating signal is output through the signal output module.
  • the capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

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  • General Engineering & Computer Science (AREA)
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Abstract

Provided is a capacitive touch device. The capacitive touch device comprises a radio signal reception module (1), a signal conversion module (2) and a signal output module (3), and the output end of the radio signal reception module (1) is connected with the input end of the signal conversion module (2), the output end of the signal conversion module (2) is connected with the signal output module (3); the radio signal reception module (1) is used for receiving a radio frequency signal of a designated frequency, converting the radio frequency signal into a DC power supply signal and outputting the DC power supply signal to the signal conversion module (2); the signal conversion module (2) is used for converting the DC power supply signal into an alternating signal and outputting the alternating signal to the signal output module (3); and the signal output module (3) is used for outputting the alternating signal upon a contact with a touch screen device. Also provided is a touch method for the capacitive touch device.

Description

触控方法及电容式触控设备 技术领域  Touch method and capacitive touch device
本发明涉及计算机领域, 特别涉及一种触控方法及电容式触控设备。 背景技术  The present invention relates to the field of computers, and in particular, to a touch method and a capacitive touch device. Background technique
智能手机、 平板电脑等触屏设备主要釆用电容式触摸屏。 在电容式触摸屏 上, 可以通过电容式触控笔的触控操作, 来控制该触屏设备。  Touch screen devices such as smartphones and tablets mainly use capacitive touch screens. On a capacitive touch screen, the touch screen device can be controlled by a touch operation of a capacitive stylus.
电容式触控笔包括被动式触控笔和主动式触控笔。被动式触控笔的笔头釆 用导电棉、 表面涂有导电漆的橡胶、 导电纤维、 透明圓盘等材料, 且一般情况 下, 笔头较粗。 当被动式触控笔的笔头接触触摸屏时, 该笔头导电, 触屏设备 基于触摸屏上的导电电流确定该触控笔的触控位置。 主动式触控笔的笔头较 细, 在笔身中安装电池, 该电池给触控笔中的控制电路提供电源, 并通过触控 笔中的驱动电路将该电源信号放大, 最终输出到笔头, 使触屏设备确定该触控 笔在触摸屏上的触控位置。  The capacitive stylus includes a passive stylus and an active stylus. Passive stylus pens are made of conductive cotton, rubber coated with conductive paint, conductive fibers, transparent discs, etc., and in general, the tip is thick. When the tip of the passive stylus touches the touch screen, the tip is conductive, and the touch screen device determines the touch position of the stylus based on the conductive current on the touch screen. The active stylus has a thin tip, and a battery is installed in the pen body. The battery supplies power to the control circuit in the stylus, and the power signal is amplified by the driving circuit in the stylus, and finally output to the pen. The touch screen device determines the touch position of the stylus on the touch screen.
被动式触控笔的笔头较粗, 无法实现准确地定位。 主动式触控笔的笔头较 细, 但是, 主动式触控笔的笔身中需要安装电池, 笔身的直径受到了电池直径 的限制, 无法灵活地设计触控笔。 发明内容  Passive stylus pens are thicker and cannot be accurately positioned. The active stylus has a thinner tip. However, the active stylus requires a battery to be installed in the pen body. The diameter of the pen body is limited by the diameter of the battery, and the stylus cannot be flexibly designed. Summary of the invention
为了解决现有技术的问题, 本发明实施例提供了一种触控方法及电容式触 控设备。 所述技术方案如下:  In order to solve the problem of the prior art, an embodiment of the present invention provides a touch method and a capacitive touch control device. The technical solution is as follows:
第一方面, 提供了一种电容式触控设备, 所述设备包括: 无线信号接收模 块、 信号转换模块和信号输出模块; 所述无线信号接收模块的输出端与所述信号转换模块的输入端连接, 所述 信号转换模块的输出端与所述信号输出模块连接; In a first aspect, a capacitive touch device is provided, the device comprising: a wireless signal receiving module, a signal conversion module, and a signal output module; An output end of the wireless signal receiving module is connected to an input end of the signal conversion module, and an output end of the signal conversion module is connected to the signal output module;
所述无线信号接收模块用于接收指定频率的无线射频信号,将所述无线射 频信号转换为直流电源信号, 并将所述直流电源信号输出至所述信号转换模 块;  The wireless signal receiving module is configured to receive a radio frequency signal of a specified frequency, convert the wireless radio frequency signal into a DC power signal, and output the DC power signal to the signal conversion module;
所述信号转换模块用于将所述直流电源信号转换为交变信号, 并将所述交 变信号输出至所述信号输出模块;  The signal conversion module is configured to convert the DC power signal into an alternating signal, and output the alternating signal to the signal output module;
所述信号输出模块用于在与触屏设备接触时, 输出所述交变信号。  The signal output module is configured to output the alternating signal when in contact with the touch screen device.
结合第一方面, 在上述第一方面的第一种可能的实现方式中, 所述设备还 包括检测模块;  With reference to the first aspect, in a first possible implementation manner of the foregoing first aspect, the device further includes a detection module;
所述检测模块与所述无线信号接收模块的输入端连接, 所述检测模块用于 检测电容式触控设备与所述触屏设备之间的距离。  The detecting module is connected to an input end of the wireless signal receiving module, and the detecting module is configured to detect a distance between the capacitive touch device and the touch screen device.
结合第一方面或第一方面的第一种可能的实现方式,在上述第一方面的第 二种可能的实现方式中, 所述无线信号接收模块包括: 接收天线、 整流模块、 电压处理模块和控制模块;  With reference to the first aspect or the first possible implementation manner of the first aspect, in the second possible implementation manner of the foregoing first aspect, the wireless signal receiving module includes: a receiving antenna, a rectifying module, a voltage processing module, and Control module
所述接收天线与所述整流模块的输入端连接, 所述整流模块的输出端与所 述电压处理模块的输入端连接, 所述控制模块与所述电压处理模块的输入端连 接, 所述电压处理模块的输出端与所述信号转换模块的输入端连接。  The receiving antenna is connected to an input end of the rectifier module, an output end of the rectifier module is connected to an input end of the voltage processing module, and the control module is connected to an input end of the voltage processing module, the voltage An output of the processing module is coupled to an input of the signal conversion module.
结合第一方面、第一方面的第一种可能的实现方式或第一方面的第二种可 能的实现方式, 在上述第一方面的第三种可能的实现方式中, 所述信号转换模 块包括: 控制电路、 调制电路和驱动电路;  With the first aspect, the first possible implementation of the first aspect, or the second possible implementation of the first aspect, in a third possible implementation manner of the foregoing first aspect, the signal conversion module includes : control circuit, modulation circuit and drive circuit;
所述控制电路的输入端与所述无线信号接收模块的输出端连接, 所述控制 电路的输出端与所述调制电路的输入端连接, 所述调制电路的输出端与所述驱 动电路的输入端连接。 第二方面, 提供了一种触控方法, 所述方法应用于电容式触控设备, 所述 电容式触控设备包括无线信号接收模块、 信号转换模块和信号输出模块, 所述 方法包括: An input end of the control circuit is connected to an output end of the wireless signal receiving module, an output end of the control circuit is connected to an input end of the modulation circuit, an output end of the modulation circuit and an input of the driving circuit End connection. In a second aspect, a touch method is provided, where the method is applied to a capacitive touch device, The capacitive touch device includes a wireless signal receiving module, a signal conversion module, and a signal output module, and the method includes:
所述无线信号接收模块接收指定频率的无线射频信号, 将所述无线射频信 号转换为直流电源信号, 并将所述直流电源信号输出至所述信号转换模块; 所述信号转换模块将所述直流电源信号转换为交变信号, 并将所述交变信 号输出至所述信号输出模块;  The wireless signal receiving module receives a radio frequency signal of a specified frequency, converts the radio frequency signal into a DC power signal, and outputs the DC power signal to the signal conversion module; the signal conversion module converts the DC Converting the power signal into an alternating signal, and outputting the alternating signal to the signal output module;
所述信号输出模块在与触屏设备接触时,输出所述交变信号,以实现触控。 结合第二方面, 在上述第二方面的第一种可能的实现方式中, 所述电容式 触控设备还包括检测模块;  The signal output module outputs the alternating signal to achieve touch when in contact with the touch screen device. With reference to the second aspect, in a first possible implementation manner of the foregoing second aspect, the capacitive touch device further includes a detection module;
所述无线信号接收模块接收指定频率的无线射频信号之前, 还包括: 所述检测模块检测电容式触控设备与所述触屏设备之间的距离;  Before the wireless signal receiving module receives the radio frequency signal of the specified frequency, the method further includes: the detecting module detecting a distance between the capacitive touch device and the touch screen device;
当检测的距离小于或等于距离阔值时, 所述无线信号接收模块执行接收指 定频率的无线射频信号的步骤。  The wireless signal receiving module performs the step of receiving a radio frequency signal of a specified frequency when the detected distance is less than or equal to the distance threshold.
结合第二方面或第二方面的第一种可能的实现方式,在上述第二方面的第 二种可能的实现方式中, 所述无线信号接收模块包括: 接收天线、 整流模块、 电压处理模块和控制模块;  With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner of the foregoing second aspect, the wireless signal receiving module includes: a receiving antenna, a rectifying module, a voltage processing module, and Control module
所述无线信号接收模块接收指定频率的无线射频信号, 将所述无线射频信 号转换为直流电源信号, 并将所述直流电源信号输出至所述信号转换模块, 包 括:  The wireless signal receiving module receives a radio frequency signal of a specified frequency, converts the radio frequency signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
所述接收天线接收指定频率的无线射频信号, 并将所述无线射频信号输出 至所述整流模块;  Receiving, by the receiving antenna, a radio frequency signal of a specified frequency, and outputting the radio frequency signal to the rectifying module;
所述整流模块对所述无线射频信号进行整流, 并将整流后的信号输出至所 述电压处理模块;  The rectifier module rectifies the wireless radio frequency signal, and outputs the rectified signal to the voltage processing module;
所述电压处理模块对整流后的信号进行稳压和滤波处理, 以及根据所述控 制模块的控制信号,对稳压和滤波处理后的信号进行控制,得到直流电源信号, 并将所述直流电源信号输出至所述信号转换模块。 结合第二方面, 在上述第二方面的第三种可能的实现方式中, 所述信号转 换模块包括: 控制电路、 调制电路和驱动电路; The voltage processing module performs voltage stabilization and filtering processing on the rectified signal, and controls the voltage-stabilized and filtered signal according to the control signal of the control module to obtain a DC power signal, and the DC power source is The signal is output to the signal conversion module. With reference to the second aspect, in a third possible implementation manner of the foregoing second aspect, the signal conversion module includes: a control circuit, a modulation circuit, and a driving circuit;
所述信号转换模块将所述直流电源信号转换为交变信号, 并将所述交变信 号输出至所述信号输出模块, 包括:  The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
所述控制电路控制所述无线信号接收模块将所述直流电源信号输出至所 述调制电路;  The control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit;
所述调制电路和所述驱动电路将所述直流电源信号转换为交变信号; 所述驱动电路将所述交变信号输出至所述信号输出模块。  The modulation circuit and the drive circuit convert the DC power signal into an alternating signal; the drive circuit outputs the alternating signal to the signal output module.
在本发明实施例中, 无线信号接收模块可以接收无线射频信号, 将该无线 射频信号转换为直流电源信号。通过信号转换模块将该直流电源信号转换为触 屏设备可以检测到的交变信号, 并通过信号输出模块将该交变信号输出。 该电 容式触控设备可以实现主动式触控笔的功能, 并且无需安装电池, 可以灵活地 设计该电容式触控设备。 附图说明  In the embodiment of the present invention, the wireless signal receiving module can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a direct current power signal. The DC power signal is converted into an alternating signal detectable by the touch panel device by the signal conversion module, and the alternating signal is output through the signal output module. The capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery. DRAWINGS
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 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发明 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。  In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.
图 1是本发明实施例提供的一种电容式触控设备的结构示意图;  1 is a schematic structural diagram of a capacitive touch device according to an embodiment of the present invention;
图 2是本发明实施例提供的另一种电容式触控设备的结构示意图; 图 3是本发明实施例提供的又一种电容式触控设备的结构示意图; 图 4是本发明实施例提供的一种无线信号接收模块电路结构示意图; 图 5是本发明实施例提供的再一种电容式触控设备的结构示意图; 图 6是本发明实施例提供的一种触控方法流程图;  FIG. 2 is a schematic structural diagram of another capacitive touch device according to an embodiment of the present invention; FIG. 3 is a schematic structural diagram of another capacitive touch device according to an embodiment of the present invention; FIG. FIG. 5 is a schematic structural diagram of a capacitive touch device according to an embodiment of the present invention; FIG. 6 is a flow chart of a touch method according to an embodiment of the present invention;
图 7是本发明实施例提供的另一种触控方法流程图。 具体实施方式 FIG. 7 is a flowchart of another touch method according to an embodiment of the present invention. detailed description
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 实施方式作进一步地详细描述。 图 1是本发明实施例提供的一种电容式触控设备, 该设备包括: 无线信号 接收模块 1、 信号转换模块 2和信号输出模块 3;  The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. 1 is a capacitive touch device according to an embodiment of the present invention, the device includes: a wireless signal receiving module 1, a signal conversion module 2, and a signal output module 3;
无线信号接收模块 1的输出端与信号转换模块 2的输入端连接,信号转换 模块 2的输出端与信号输出模块 3连接;  The output end of the wireless signal receiving module 1 is connected to the input end of the signal conversion module 2, and the output end of the signal conversion module 2 is connected to the signal output module 3;
无线信号接收模块 1用于接收指定频率的无线射频信号, 将无线射频信号 转换为直流电源信号, 并将该直流电源信号输出至信号转换模块 2;  The wireless signal receiving module 1 is configured to receive a radio frequency signal of a specified frequency, convert the radio frequency signal into a DC power signal, and output the DC power signal to the signal conversion module 2;
信号转换模块 2用于将直流电源信号转换为交变信号, 并将该交变信号输 出至信号输出模块 3;  The signal conversion module 2 is configured to convert the DC power signal into an alternating signal, and output the alternating signal to the signal output module 3;
信号输出模块 3用于在与触屏设备接触时, 输出该交变信号。 所述触屏设 备包括手机、 平板电脑、 电子阅读器等。  The signal output module 3 is for outputting the alternating signal when in contact with the touch screen device. The touch screen device includes a mobile phone, a tablet computer, an e-reader, and the like.
其中, 电容式触控设备可以设计成触控笔的形式, 还可以设计成其他的形 式, 本发明实施例对此不做具体限定。  The capacitive touch device can be designed in the form of a stylus, and can be designed in other forms, which is not specifically limited in the embodiment of the present invention.
其中, 在本发明实施例中, 无线射频信号可以是触屏设备发送的, 电容式 触控设备可以釆用无线信号接收模块 1接收该无线射频信号, 并将该无线射频 信号转换为直流电源信号, 无需在电容式触控设备内安装电池, 进而提高了触 控设备的设计灵活性,比如,电容式触控设备可以更容易地收纳到触屏设备里。  In the embodiment of the present invention, the wireless radio frequency signal may be sent by the touch screen device, and the capacitive touch device may receive the wireless radio frequency signal by using the wireless signal receiving module 1 and convert the wireless radio frequency signal into a DC power signal. There is no need to install a battery in a capacitive touch device, thereby improving the design flexibility of the touch device. For example, the capacitive touch device can be more easily accommodated in the touch screen device.
可选地, 如图 2所示, 该设备还包括检测模块 4;  Optionally, as shown in FIG. 2, the device further includes a detecting module 4;
检测模块 4与无线信号接收模块 1的输入端连接,检测模块 4用于检测电 容式触控设备与触屏设备之间的距离。  The detecting module 4 is connected to the input end of the wireless signal receiving module 1, and the detecting module 4 is configured to detect the distance between the capacitive touch device and the touch screen device.
其中, 电容式触控设备与触屏设备之间的距离实际上是信号输出模块 3与 触屏设备之间的距离, 而检测信号输出模块 3与触屏设备之间的距离的方法可 以为通过悬浮触控技术检测信号输出模块 3与触屏设备的触摸屏之间的距离, 或者通过非接触式射频识别(RFID )技术或近距离无线通讯(NFC )技术检测 电容式触控设备与触屏设备之间的距离, 上述技术均为本领域技术人员熟知 的, 在此不再赘述。 The distance between the capacitive touch device and the touch screen device is actually the distance between the signal output module 3 and the touch screen device, and the method for detecting the distance between the signal output module 3 and the touch screen device can be It is considered that the distance between the signal output module 3 and the touch screen of the touch screen device is detected by the hovering touch technology, or the capacitive touch device and the touch are detected by the non-contact radio frequency identification (RFID) technology or the short-range wireless communication (NFC) technology. The distance between the screen devices is well known to those skilled in the art and will not be described herein.
在本发明实施例中, 该电容式触控设备还可以包括检测模块 4, 当该检测 模块 4检测到电容式触控设备与触屏设备之间的距离小于距离阔值时, 该无线 射频信号强度较强, 此时, 该电容式触控设备的无线信号接收模块 1才开始工 作, 避免了该电容式触控设备频繁地接收信号强度较弱的信号, 从而提高了电 容式触控设备的寿命。  In the embodiment of the present invention, the capacitive touch device may further include a detecting module 4, when the detecting module 4 detects that the distance between the capacitive touch device and the touch screen device is less than the distance threshold, the wireless radio frequency signal The wireless signal receiving module 1 of the capacitive touch device starts working, and the capacitive touch device frequently receives signals with weak signal strength, thereby improving the capacitive touch device. life.
其中, 电容式触控设备中也可以不包括检测模块 4。 当不包括检测模块 4 时, 无线信号接收模块 1会不停地接收无线射频信号。  The detection module 4 may not be included in the capacitive touch device. When the detection module 4 is not included, the wireless signal receiving module 1 continuously receives the wireless radio frequency signal.
其中, 如图 3所示, 无线信号接收模块 1 包括: 接收天线 11、 整流模块 12、 电压处理模块 13和控制模块 14;  As shown in FIG. 3, the wireless signal receiving module 1 includes: a receiving antenna 11, a rectifier module 12, a voltage processing module 13, and a control module 14;
接收天线 11与整流模块 12的输入端连接, 整流模块 12的输出端与电压 处理模块 13的输入端连接, 控制模块 14与电压处理模块 13的输入端连接, 电压处理模块 13的输出端与信号转换模块 2的输入端连接。  The receiving antenna 11 is connected to the input end of the rectifier module 12, the output end of the rectifier module 12 is connected to the input end of the voltage processing module 13, the control module 14 is connected to the input end of the voltage processing module 13, and the output and signal of the voltage processing module 13 are connected. The input of the conversion module 2 is connected.
其中, 接收天线 11 可以是一个简单的天线, 或者一个线圈, 降低了电容 式触控设备的成本。  The receiving antenna 11 can be a simple antenna or a coil, which reduces the cost of the capacitive touch device.
在本发明实施例中, 触屏设备的触摸屏上能够接受的电压是一定的, 而本 发明实施例中是通过该电容式触控设备对触屏设备进行触控, 也就是说, 当该 电容式触控设备与触屏设备的触摸屏接触时, 该电容式触控设备可以向该触摸 屏上输出电压, 通过输出的电压对该触屏设备进行触控。 所以, 为了保证该电 容式触控设备输出的电压在该触摸屏能够接受的电压范围之内, 可以通过控制 模块 14对电压处理模块 13输出的直流电源信号的电压进行控制。  In the embodiment of the present invention, the voltage that can be received on the touch screen of the touch screen device is constant, and in the embodiment of the invention, the touch screen device is touched by the capacitive touch device, that is, when the capacitor When the touch device is in contact with the touch screen of the touch screen device, the capacitive touch device can output a voltage to the touch screen, and touch the touch device through the output voltage. Therefore, in order to ensure that the voltage output by the capacitive touch device is within a voltage range acceptable to the touch screen, the voltage of the DC power signal output by the voltage processing module 13 can be controlled by the control module 14.
需要补充说明的是, 接收天线 11、 整流模块 12、 电压处理模块 13和控制 模块 14分别可以有多种形式的电路构成, 本发明实施例仅对其中的一种形式 进行说明。 例如, 图 4为一种无线信号接收模块 1的电路图, 电感 L的一端与 整流器 D的第一输入端连接, 电感 L的另一端与整流器 D的第二输入端连接, 整流器 D的第一输出端与电解电容 C1的一端连接, 且接地。 整流器 D的第二 输出端分别与电解电容 C1的另一端和电容 C2的一端连接, 电容 C2的另一端 也接地。 电容 C2的一端还分别与电阻 R1 的一端、 电阻 R2的一端、 三极管 Q1的发射极、 电阻 R4的一端和发光二极管 LED2的阳极连接, 电阻 R1的另 一端与滑动变阻器 RP的第一固定端连接, 滑动变阻器 RP的另一端与变容二 极管 TL1的阳极连接, 变容二极管 TL1的阴极与电阻 R9的一端连接, 且变容 二极管 TL1还与滑动变阻器 RP的滑动端连接, 变容二极管 TL1的阳极接地。 电阻 R2的另一端分别与电阻 R3的一端和三极管 Q1的基极连接, 电阻 R3的 另一端与放大器 IC的输出端连接。三极管 Q1的集电极与发光二极管 LED1的 阳极连接,发光二极管 LED1的阴极接地。 电阻 R4的另一端与电阻 R5的一端 连接, 电阻 R5的另一端与三极管 Q3的发射极连接, 且开关 SW接在电阻 R5 的两端。 三极管 Q3的基极分别与发光二极管 LED2的阴极和电阻 R6的一端 连接,电阻 R6的另一端与三极管 Q2的集电极连接,三极管 Q2的发射极接地, 三极管 Q2的基极与电阻 R7的一端连接, 电阻 R7的一端与放大器 IC的输出 端连接。 放大器 IC的正向输入端与电子 R9的另一端连接, 放大器 IC的反向 输入端与电阻 R8的一端连接, 电阻 R8的另一端与电容 C3的一端连接, 电容 C3的另一端与三极管 Q3的集电极连接。 It should be noted that the receiving antenna 11, the rectifying module 12, the voltage processing module 13, and the control module 14 may be configured in various forms, and the embodiment of the present invention is only one of the forms. Be explained. For example, FIG. 4 is a circuit diagram of a wireless signal receiving module 1. One end of the inductor L is connected to the first input end of the rectifier D, and the other end of the inductor L is connected to the second input end of the rectifier D. The first output of the rectifier D The terminal is connected to one end of the electrolytic capacitor C1 and grounded. The second output end of the rectifier D is respectively connected to the other end of the electrolytic capacitor C1 and one end of the capacitor C2, and the other end of the capacitor C2 is also grounded. One end of the capacitor C2 is also connected to one end of the resistor R1, one end of the resistor R2, the emitter of the transistor Q1, one end of the resistor R4, and the anode of the LED2, and the other end of the resistor R1 is connected to the first fixed end of the sliding varistor RP. The other end of the sliding varistor RP is connected to the anode of the varactor diode TL1, the cathode of the varactor diode TL1 is connected to one end of the resistor R9, and the varactor diode TL1 is also connected to the sliding end of the sliding varistor RP, and the anode of the varactor diode TL1 Ground. The other end of the resistor R2 is connected to one end of the resistor R3 and the base of the transistor Q1, and the other end of the resistor R3 is connected to the output terminal of the amplifier IC. The collector of the transistor Q1 is connected to the anode of the light-emitting diode LED1, and the cathode of the light-emitting diode LED1 is grounded. The other end of the resistor R4 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the emitter of the transistor Q3, and the switch SW is connected to both ends of the resistor R5. The base of the transistor Q3 is respectively connected to the cathode of the LED2 and the end of the resistor R6, the other end of the resistor R6 is connected to the collector of the transistor Q2, the emitter of the transistor Q2 is grounded, and the base of the transistor Q2 is connected to one end of the resistor R7. One end of the resistor R7 is connected to the output of the amplifier IC. The positive input terminal of the amplifier IC is connected to the other end of the electron R9, the reverse input end of the amplifier IC is connected to one end of the resistor R8, the other end of the resistor R8 is connected to one end of the capacitor C3, and the other end of the capacitor C3 is connected to the transistor Q3. Collector connection.
其中, 在图 4中, 电感 L可以作为接收天线 11, 用于接收触屏设备发射 的无线射频信号; 四个二极管组成整流器0, 可以作为整流模块 12, 用于对接 收的无线射频信号进行整流处理; 电解电容 C1和电容 C2作为电压处理模块 13的一部分,用于对整流后的直流电源信号进行滤波处理。后续的电路是对滤 波后的直流电源信号进行控制, 以改变电压处理模块 13输出的信号的电压大 小和电流大小。 另外, 电容 C3与电阻 R8之间可以输出信号, 作为电压处理 模块 13的输出信号, 在此不再进行详细解释说明。 其中, 如图 5所示, 信号转换模块 2包括: 控制电路 21、 调制电路 22和 驱动电路 23; In FIG. 4, the inductor L can be used as the receiving antenna 11 for receiving the radio frequency signal transmitted by the touch screen device; the four diodes constitute the rectifier 0, and can be used as the rectifying module 12 for rectifying the received radio frequency signal. The electrolytic capacitor C1 and the capacitor C2 are used as part of the voltage processing module 13 for filtering the rectified DC power signal. The subsequent circuit controls the filtered DC power signal to change the voltage magnitude and current magnitude of the signal output by the voltage processing module 13. In addition, a signal can be output between the capacitor C3 and the resistor R8 as an output signal of the voltage processing module 13, which will not be explained in detail herein. As shown in FIG. 5, the signal conversion module 2 includes: a control circuit 21, a modulation circuit 22, and a drive circuit 23;
控制电路 21的输入端与无线信号接收模块 1的输出端连接, 控制电路 21 的输出端与调制电路 22的输入端连接, 调制电路 22的输出端与驱动电路 23 的输入端连接。  The input terminal of the control circuit 21 is connected to the output terminal of the wireless signal receiving module 1, the output terminal of the control circuit 21 is connected to the input terminal of the modulation circuit 22, and the output terminal of the modulation circuit 22 is connected to the input terminal of the drive circuit 23.
其中, 无线信号接收模块 1的输出端为电压处理模块 13的输出端, 所以, 控制电路 21的输入端与无线信号接收模块 1的输出端连接, 也即是, 控制电 路 21的输入端与电压处理模块 13的输出端连接。  The output end of the wireless signal receiving module 1 is the output end of the voltage processing module 13, so that the input end of the control circuit 21 is connected to the output end of the wireless signal receiving module 1, that is, the input terminal and the voltage of the control circuit 21 The output of the processing module 13 is connected.
其中, 控制电路 21 可以对无线信号接收模块 1输出的直流电源信号进行 控制, 以将该直流电源信号输入到调制电路 22中, 进而使调制电路 22和驱动 电路 23将该直流电源信号转换为交变信号。  The control circuit 21 can control the DC power signal outputted by the wireless signal receiving module 1 to input the DC power signal into the modulation circuit 22, and then the modulation circuit 22 and the drive circuit 23 convert the DC power signal into an intersection. Change the signal.
需要补充说明的是, 电容式触控设备不仅可以打开触屏设备中安装的应用 程序、 输入文字等, 还可以执行一些其他的功能。 当电容式触控设备的功能不 同时, 电容式触控设备中的控制电路 21、调制电路 22和驱动电路 23的结构各 不相同,本发明实施例对控制电路 21、调制电路 22和驱动电路 23的具体结构 不做具体限定。  It should be added that the capacitive touch device can not only open the application installed in the touch screen device, input text, etc., but also perform some other functions. When the functions of the capacitive touch device are different, the structures of the control circuit 21, the modulation circuit 22, and the driving circuit 23 in the capacitive touch device are different, and the control circuit 21, the modulation circuit 22, and the driving circuit are in the embodiment of the present invention. The specific structure of 23 is not specifically limited.
其中, 信号输出模块 3可以包括电极和橡胶笔头, 该电极的一端与驱动电 路 23 的输出端连接, 电极的另一端安装有橡胶笔头, 通过该橡胶笔头接触或 接近触屏设备的触摸屏, 使触屏设备确定该电容式触控设备的触控位置, 进而 对该触控设备进行触控。  The signal output module 3 may include an electrode and a rubber pen tip. One end of the electrode is connected to the output end of the driving circuit 23. The other end of the electrode is mounted with a rubber pen tip. The rubber pen tip contacts or approaches the touch screen of the touch screen device to make a touch. The screen device determines the touch position of the capacitive touch device, and then touches the touch device.
在本发明实施例中, 电容式触控设备中的无线信号接收模块可以接收无线 射频信号, 将该无线射频信号转换为直流电源信号。 通过信号转换模块将该直 流电源信号转换为触屏设备可以检测到的交变信号, 并通过信号输出模块将该 交变信号输出。 该电容式触控设备可以实现主动式触控笔的功能, 并且无需安 装电池, 可以灵活地设计该电容式触控设备。 图 6是本发明实施例提供的一种触控方法流程图。 该方法应用于电容式触 控设备, 该电容式触控设备包括无线信号接收模块、 信号转换模块和信号输出 模块。 参见图 6, 该方法包括: In the embodiment of the present invention, the wireless signal receiving module in the capacitive touch device can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a DC power signal. The DC power signal is converted into an alternating signal detectable by the touch screen device by the signal conversion module, and the alternating signal is output through the signal output module. The capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery. FIG. 6 is a flowchart of a touch method according to an embodiment of the present invention. The method is applied to a capacitive touch device, and the capacitive touch device comprises a wireless signal receiving module, a signal conversion module and a signal output module. Referring to Figure 6, the method includes:
步骤 601 : 无线信号接收模块接收指定频率的无线射频信号, 将该无线射 频信号转换为直流电源信号, 并将该直流电源信号输出至信号转换模块。  Step 601: The wireless signal receiving module receives the wireless RF signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module.
步骤 602: 信号转换模块将该直流电源信号转换为交变信号, 并将交变信 号输出至信号输出模块。  Step 602: The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module.
步骤 603: 信号输出模块在与触屏设备接触时, 输出该交变信号, 以实现 触控。  Step 603: The signal output module outputs the alternating signal when contacting the touch screen device to implement touch.
在本发明实施例中, 无线信号接收模块可以接收无线射频信号, 将该无线 射频信号转换为直流电源信号。通过信号转换模块将该直流电源信号转换为触 屏设备可以检测到的交变信号, 并通过信号输出模块将该交变信号输出。 该电 容式触控设备可以实现主动式触控笔的功能, 并且无需安装电池, 可以灵活地 设计该电容式触控设备。  In the embodiment of the present invention, the wireless signal receiving module can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a direct current power signal. The DC power signal is converted into an alternating signal detectable by the touch panel device by the signal conversion module, and the alternating signal is output through the signal output module. The capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery.
可选地, 电容式触控设备还包括检测模块;  Optionally, the capacitive touch device further includes a detection module;
无线信号接收模块接收指定频率的无线射频信号之前, 还包括: 检测模块检测电容式触控设备与触屏设备之间的距离;  Before the wireless signal receiving module receives the radio frequency signal of the specified frequency, the method further includes: detecting, by the detecting module, a distance between the capacitive touch device and the touch screen device;
当检测的距离小于或等于距离阔值时, 无线信号接收模块执行接收指定频 率的无线射频信号的步骤。  When the detected distance is less than or equal to the distance threshold, the wireless signal receiving module performs the step of receiving the radio frequency signal of the specified frequency.
可选地, 无线信号接收模块包括: 接收天线、 整流模块、 电压处理模块和 控制模块;  Optionally, the wireless signal receiving module includes: a receiving antenna, a rectifier module, a voltage processing module, and a control module;
无线信号接收模块接收指定频率的无线射频信号, 将该无线射频信号转换 为直流电源信号, 并将该直流电源信号输出至信号转换模块, 包括:  The wireless signal receiving module receives the wireless RF signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
接收天线接收指定频率的无线射频信号, 并将该无线射频信号输出至整流 模块;  The receiving antenna receives the radio frequency signal of the specified frequency, and outputs the radio frequency signal to the rectifying module;
整流模块对该无线射频信号进行整流, 并将整流后的信号输出至电压处理 模块; The rectifier module rectifies the wireless RF signal, and outputs the rectified signal to voltage processing Module
电压处理模块对整流后的信号进行稳压和滤波处理, 以及根据控制模块的 控制信号, 对稳压和滤波处理后的信号进行控制, 得到直流电源信号, 并将该 直流电源信号输出至信号转换模块。  The voltage processing module performs voltage stabilization and filtering processing on the rectified signal, and controls the voltage-stabilized and filtered signal according to the control signal of the control module to obtain a DC power signal, and outputs the DC power signal to the signal conversion. Module.
可选地, 信号转换模块包括: 控制电路、 调制电路和驱动电路;  Optionally, the signal conversion module includes: a control circuit, a modulation circuit, and a driving circuit;
信号转换模块将该直流电源信号转换为交变信号, 并将该交变信号输出至 信号输出模块, 包括:  The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
控制电路控制无线信号接收模块将直流电源信号输出至调制电路; 调制电路和驱动电路将该直流电源信号转换为交变信号;  The control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit; the modulation circuit and the driving circuit convert the DC power signal into an alternating signal;
驱动电路将该交变信号输出至信号输出模块。  The drive circuit outputs the alternating signal to the signal output module.
上述所有可选技术方案, 均可按照任意结合形成本发明的可选实施例, 在 此不再——赘述。 图 7是本发明实施例提供的一种触控方法流程图。 该方法应用于电容式触 控设备, 且该电容式触控设备包括检测模块、 无线信号接收模块、 信号转换模 块和信号输出模块。 参见图 7, 该方法包括:  All of the above optional technical solutions may form an optional embodiment of the present invention in any combination, and will not be described again. FIG. 7 is a flowchart of a touch method according to an embodiment of the present invention. The method is applied to a capacitive touch control device, and the capacitive touch device comprises a detection module, a wireless signal receiving module, a signal conversion module and a signal output module. See Figure 7, which includes:
步骤 701 : 检测模块检测电容式触控设备与触屏设备之间的距离。  Step 701: The detecting module detects a distance between the capacitive touch device and the touch screen device.
其中, 检测模块检测电容式触控设备与触屏设备之间的距离, 也就是, 检 测电容式触控设备的信号输出模块与触屏设备的触摸屏之间的距离。  The detecting module detects the distance between the capacitive touch device and the touch screen device, that is, detects the distance between the signal output module of the capacitive touch device and the touch screen of the touch screen device.
其中, 在本发明实施例中, 步骤 701是可选地, 即, 可以在无线信号接收 模块接收指定频率的无线射频信号之前执行,也可以不执行。当不执行步骤 701 时, 无线信号接收模块可以不停地接收无线射频信号。  In the embodiment of the present invention, step 701 is optional, that is, may be performed before or after the wireless signal receiving module receives the radio frequency signal of the specified frequency. When step 701 is not performed, the wireless signal receiving module can continuously receive the wireless radio frequency signal.
步骤 702: 当检测的距离小于或等于距离阔值时, 无线信号接收模块接收 指定频率的无线射频信号, 将该无线射频信号转换为直流电源信号, 并将该直 流电源信号输出至信号转换模块。  Step 702: When the detected distance is less than or equal to the distance threshold, the wireless signal receiving module receives the wireless frequency signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module.
其中, 无线信号接收模块包括: 接收天线、 整流模块、 电压处理模块和控 制模块; 无线信号接收模块接收指定频率的无线射频信号, 将无线射频信号转 换为直流电源信号, 并将该直流电源信号输出至信号转换模块, 包括: The wireless signal receiving module includes: a receiving antenna, a rectifier module, a voltage processing module, and a control The wireless signal receiving module receives the wireless RF signal of the specified frequency, converts the wireless RF signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
接收天线接收指定频率的无线射频信号, 并将该无线射频信号输出至整流 模块; 整流模块对该无线射频信号进行整流, 并将整流后的信号输出至电压处 理模块; 电压处理模块对整流后的信号进行稳压和滤波处理, 以及根据控制模 块的控制信号, 对稳压和滤波处理后的信号进行控制, 得到直流电源信号, 并 将该直流电源信号输出至信号转换模块。  The receiving antenna receives the radio frequency signal of the specified frequency, and outputs the radio frequency signal to the rectifying module; the rectifying module rectifies the radio frequency signal, and outputs the rectified signal to the voltage processing module; the voltage processing module rectifies The signal is regulated and filtered, and the regulated and filtered signals are controlled according to the control signal of the control module to obtain a DC power signal, and the DC power signal is output to the signal conversion module.
在本发明实施例中,触屏设备的触摸屏上能够接受的电压是一定的,所以, 可以通过控制模块 14对电压处理模块 13输出的直流电源信号的电压进行控 制, 使直流电源信号的电压固定。  In the embodiment of the present invention, the voltage that can be accepted on the touch screen of the touch screen device is constant. Therefore, the voltage of the DC power signal outputted by the voltage processing module 13 can be controlled by the control module 14 to fix the voltage of the DC power signal. .
其中, 指定频率的无线射频信号是触屏设备发送的, 电容式触控设备利用 触屏设备发送的无线射频信号, 为该电容式触控设备提供电源, 无需在电容式 触控设备中安装电池, 从而可以灵活地设计电容式触控设备。  The radio frequency signal of the specified frequency is sent by the touch screen device, and the capacitive touch device uses the radio frequency signal sent by the touch screen device to provide power for the capacitive touch device, and the battery is not required to be installed in the capacitive touch device. Therefore, it is possible to flexibly design a capacitive touch device.
进一步地,当检测的距离大于距离阔值时,确定空间不存在无线射频信号, 或者空间存在的无线射频信号的信号强度较弱, 此时, 无线信号接收模块可以 不接收无线射频信号, 提高了电容式触控设备的寿命。  Further, when the detected distance is greater than the distance threshold, it is determined that there is no radio frequency signal in the space, or the signal strength of the radio frequency signal existing in the space is weak. At this time, the wireless signal receiving module may not receive the radio frequency signal, thereby improving The life of capacitive touch devices.
步骤 703: 信号转换模块将该直流电源信号转换为交变信号, 并将该交变 信号输出至信号输出模块。  Step 703: The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module.
其中, 信号转换模块包括: 控制电路、 调制电路和驱动电路; 信号转换模 块将该直流电源信号转换为交变信号, 并将该交变信号输出至信号输出模块, 包括:  The signal conversion module includes: a control circuit, a modulation circuit, and a driving circuit; the signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
控制电路控制无线信号接收模块将该直流电源信号输出至调制电路; 调制 电路和驱动电路将该直流电源信号转换为交变信号, 驱动电路将该交变信号输 出至信号输出模块。  The control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit; the modulation circuit and the driving circuit convert the DC power signal into an alternating signal, and the driving circuit outputs the alternating signal to the signal output module.
其中, 在本发明实施例中, 触摸屏上无法识别直流信号, 只能识别交流信 号, 所以, 将直流电源信号转换为交变信号, 也就是将直流信号转换为交流信 号, 本发明实施例对此不做具体阐述。 In the embodiment of the present invention, the DC signal is not recognized on the touch screen, and only the AC signal can be identified. Therefore, the DC power signal is converted into an alternating signal, that is, the DC signal is converted into an AC signal. The embodiment of the present invention does not specifically describe this.
步骤 704: 信号输出模块在与触屏设备接触时, 输出该交变信号, 以实现 触控。  Step 704: The signal output module outputs the alternating signal when contacting the touch screen device to implement touch.
其中, 当该信号输出模块与触屏设备的触摸屏接触时, 该触屏设备可以识 别该交变信号, 并根据该交变信号, 确定该电容式触控设备的触控位置。 基于 该触控位置和该交变信号, 执行对应的触控操作, 实现对该触屏设备的触控。  When the signal output module is in contact with the touch screen of the touch screen device, the touch screen device can recognize the alternating signal, and determine the touch position of the capacitive touch device according to the alternating signal. Based on the touch position and the alternating signal, performing a corresponding touch operation to implement touch on the touch screen device.
需要补充说明的是, 根据该交变信号, 确定该电容式触控设备的触控位置 时, 可以基于该交变信号在触屏设备上导电的电流, 确定该电容式触控设备的 触控位置, 本发明实施例对此不做详细解释。  It should be noted that, according to the alternating signal, when the touch position of the capacitive touch device is determined, the touch of the capacitive touch device may be determined based on the current of the alternating signal on the touch screen device. The location of the present invention is not explained in detail.
在本发明实施例中, 无线信号接收模块可以接收无线射频信号, 将该无线 射频信号转换为直流电源信号。通过信号转换模块将该直流电源信号转换为触 屏设备可以检测到的交变信号, 并通过信号输出模块将该交变信号输出。 该电 容式触控设备可以实现主动式触控笔的功能, 并且无需安装电池, 可以灵活地 设计该电容式触控设备。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可以存储 于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘 或光盘等。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。  In the embodiment of the present invention, the wireless signal receiving module can receive the wireless radio frequency signal, and convert the wireless radio frequency signal into a direct current power signal. The DC power signal is converted into an alternating signal detectable by the touch panel device by the signal conversion module, and the alternating signal is output through the signal output module. The capacitive touch device can realize the function of an active stylus and can flexibly design the capacitive touch device without installing a battery. A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

权 利 要 求 书 Claim
1、 一种电容式触控设备, 其特征在于, 所述设备包括: 无线信号接收模块、 信号转换模块和信号输出模块; A capacitive touch device, the device comprising: a wireless signal receiving module, a signal conversion module, and a signal output module;
所述无线信号接收模块的输出端与所述信号转换模块的输入端连接, 所述 信号转换模块的输出端与所述信号输出模块连接;  An output end of the wireless signal receiving module is connected to an input end of the signal conversion module, and an output end of the signal conversion module is connected to the signal output module;
所述无线信号接收模块用于接收指定频率的无线射频信号, 将所述无线射 频信号转换为直流电源信号, 并将所述直流电源信号输出至所述信号转换模块; 所述信号转换模块用于将所述直流电源信号转换为交变信号, 并将所述交 变信号输出至所述信号输出模块;  The wireless signal receiving module is configured to receive a radio frequency signal of a specified frequency, convert the wireless radio frequency signal into a DC power signal, and output the DC power signal to the signal conversion module; Converting the DC power signal into an alternating signal, and outputting the alternating signal to the signal output module;
所述信号输出模块用于在与触屏设备接触时, 输出所述交变信号。  The signal output module is configured to output the alternating signal when in contact with the touch screen device.
2、 如权利要求 1所述的设备, 其特征在于, 所述设备还包括检测模块; 所述检测模块与所述无线信号接收模块的输入端连接, 所述检测模块用于 检测所述电容式触控设备与所述触屏设备之间的距离。 2. The device according to claim 1, wherein the device further comprises a detection module; the detection module is connected to an input end of the wireless signal receiving module, and the detection module is configured to detect the capacitive type The distance between the touch device and the touch screen device.
3、 如权利要求 1或 2所述的设备, 其特征在于, 所述无线信号接收模块包 括: 接收天线、 整流模块、 电压处理模块和控制模块; The device according to claim 1 or 2, wherein the wireless signal receiving module comprises: a receiving antenna, a rectifying module, a voltage processing module and a control module;
所述接收天线与所述整流模块的输入端连接, 所述整流模块的输出端与所 述电压处理模块的输入端连接, 所述控制模块与所述电压处理模块的输入端连 接, 所述电压处理模块的输出端与所述信号转换模块的输入端连接。  The receiving antenna is connected to an input end of the rectifier module, an output end of the rectifier module is connected to an input end of the voltage processing module, and the control module is connected to an input end of the voltage processing module, the voltage An output of the processing module is coupled to an input of the signal conversion module.
4、 如权利要求 1-3任一权利要求所述的设备, 其特征在于, 所述信号转换 模块包括: 控制电路、 调制电路和驱动电路; The device according to any one of claims 1 to 3, wherein the signal conversion module comprises: a control circuit, a modulation circuit, and a driving circuit;
所述控制电路的输入端与所述无线信号接收模块的输出端连接, 所述控制 电路的输出端与所述调制电路的输入端连接, 所述调制电路的输出端与所述驱 动电路的输入端连接。 An input end of the control circuit is connected to an output end of the wireless signal receiving module, an output end of the control circuit is connected to an input end of the modulation circuit, and an output end of the modulation circuit and the drive The input of the moving circuit is connected.
5、 一种触控方法, 所述方法应用于电容式触控设备, 所述电容式触控设备 包括无线信号接收模块、 信号转换模块和信号输出模块, 其特征在于, 所述方 法包括: A touch method, the method is applied to a capacitive touch device, and the capacitive touch device includes a wireless signal receiving module, a signal conversion module, and a signal output module, wherein the method includes:
所述无线信号接收模块接收指定频率的无线射频信号, 将所述无线射频信 号转换为直流电源信号, 并将所述直流电源信号输出至所述信号转换模块; 所述信号转换模块将所述直流电源信号转换为交变信号, 并将所述交变信 号输出至所述信号输出模块;  The wireless signal receiving module receives a radio frequency signal of a specified frequency, converts the radio frequency signal into a DC power signal, and outputs the DC power signal to the signal conversion module; the signal conversion module converts the DC Converting the power signal into an alternating signal, and outputting the alternating signal to the signal output module;
所述信号输出模块在与触屏设备接触时, 输出所述交变信号, 以实现触控。  The signal output module outputs the alternating signal when in contact with the touch screen device to implement touch.
6、 如权利要求 5所述的方法, 其特征在于, 所述电容式触控设备还包括检 测模块; The method of claim 5, wherein the capacitive touch device further comprises a detection module;
所述无线信号接收模块接收指定频率的无线射频信号之前, 还包括: 所述检测模块检测电容式触控设备与所述触屏设备之间的距离;  Before the wireless signal receiving module receives the radio frequency signal of the specified frequency, the method further includes: the detecting module detecting a distance between the capacitive touch device and the touch screen device;
当检测的距离小于或等于距离阔值时, 所述无线信号接收模块执行接收指 定频率的无线射频信号的步骤。  The wireless signal receiving module performs the step of receiving a radio frequency signal of a specified frequency when the detected distance is less than or equal to the distance threshold.
7、 如权利要求 5或 6所述的方法, 其特征在于, 所述无线信号接收模块包 括: 接收天线、 整流模块、 电压处理模块和控制模块; The method according to claim 5 or 6, wherein the wireless signal receiving module comprises: a receiving antenna, a rectifying module, a voltage processing module and a control module;
所述无线信号接收模块接收指定频率的无线射频信号, 将所述无线射频信 号转换为直流电源信号, 并将所述直流电源信号输出至所述信号转换模块, 包 括:  The wireless signal receiving module receives a radio frequency signal of a specified frequency, converts the radio frequency signal into a DC power signal, and outputs the DC power signal to the signal conversion module, including:
所述接收天线接收指定频率的无线射频信号, 并将所述无线射频信号输出 至所述整流模块;  Receiving, by the receiving antenna, a radio frequency signal of a specified frequency, and outputting the radio frequency signal to the rectifying module;
所述整流模块对所述无线射频信号进行整流, 并将整流后的信号输出至所 述电压处理模块; The rectifier module rectifies the wireless radio frequency signal, and outputs the rectified signal to the Voltage processing module;
所述电压处理模块对整流后的信号进行稳压和滤波处理, 以及根据所述控 制模块的控制信号, 对稳压和滤波处理后的信号进行控制, 得到直流电源信号, 并将所述直流电源信号输出至所述信号转换模块。  The voltage processing module performs voltage stabilization and filtering processing on the rectified signal, and controls the voltage-stabilized and filtered signal according to the control signal of the control module to obtain a DC power signal, and the DC power source is The signal is output to the signal conversion module.
8、 如权利要求 5所述的方法, 其特征在于, 所述信号转换模块包括: 控制 电路、 调制电路和驱动电路; 8. The method according to claim 5, wherein the signal conversion module comprises: a control circuit, a modulation circuit, and a driving circuit;
所述信号转换模块将所述直流电源信号转换为交变信号, 并将所述交变信 号输出至所述信号输出模块, 包括:  The signal conversion module converts the DC power signal into an alternating signal, and outputs the alternating signal to the signal output module, including:
所述控制电路控制所述无线信号接收模块将所述直流电源信号输出至所述 调制电路;  The control circuit controls the wireless signal receiving module to output the DC power signal to the modulation circuit;
所述调制电路和所述驱动电路将所述直流电源信号转换为交变信号; 所述驱动电路将所述交变信号输出至所述信号输出模块。  The modulation circuit and the drive circuit convert the DC power signal into an alternating signal; the drive circuit outputs the alternating signal to the signal output module.
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