WO2020147638A1 - 位置检测***及数字手写笔 - Google Patents

位置检测***及数字手写笔 Download PDF

Info

Publication number
WO2020147638A1
WO2020147638A1 PCT/CN2020/071087 CN2020071087W WO2020147638A1 WO 2020147638 A1 WO2020147638 A1 WO 2020147638A1 CN 2020071087 W CN2020071087 W CN 2020071087W WO 2020147638 A1 WO2020147638 A1 WO 2020147638A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
module
key
pressure
detection
Prior art date
Application number
PCT/CN2020/071087
Other languages
English (en)
French (fr)
Inventor
罗勇
张鹏程
吴世华
王周宏
Original Assignee
深圳市绘王动漫科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市绘王动漫科技有限公司 filed Critical 深圳市绘王动漫科技有限公司
Priority to KR1020217023313A priority Critical patent/KR20210104878A/ko
Priority to JP2021541117A priority patent/JP7245342B2/ja
Priority to EP20742067.0A priority patent/EP3913470A4/en
Publication of WO2020147638A1 publication Critical patent/WO2020147638A1/zh
Priority to US17/377,498 priority patent/US20210349597A1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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 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; CALCULATING OR 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
    • G06F3/0346—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F3/0441—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 receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/9625—Touch switches using a force resistance transducer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/038—Indexing scheme relating to G06F3/038
    • G06F2203/0384—Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/96071—Capacitive touch switches characterised by the detection principle
    • H03K2217/960715—Rc-timing; e.g. measurement of variation of charge time or discharge time of the sensor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/96071—Capacitive touch switches characterised by the detection principle
    • H03K2217/96072—Phase comparison, i.e. where a phase comparator receives at one input the signal directly from the oscillator, at a second input the same signal but delayed, with a delay depending on a sensing capacitance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/965—Switches controlled by moving an element forming part of the switch
    • H03K2217/9651—Switches controlled by moving an element forming part of the switch the moving element acting on a force, e.g. pressure sensitive element

Definitions

  • This application relates to the technical field of computer peripheral input devices, in particular to a position detection system and a digital stylus.
  • the digital stylus in the prior art is usually used together with the matching handwriting board.
  • the digital stylus has functions such as pressure and buttons.
  • the digital stylus in the prior art detects pressure and buttons and other functions including the following two Ways:
  • a method is to change the oscillation parameters of the digital stylus, so that the induction frequency received by the handwriting board is changed to determine the keys and the magnitude of the pressure sensitivity.
  • the relative position of the pen coil and the magnetic core is changed, so that the oscillation frequency of the pen is changed, and then the pressure sensitivity is judged. This will result in too high frequency accuracy requirements during production and high production difficulty. There is uncertainty in the size of the water pressure, which causes problems such as unstable water.
  • the other is the method adopted by CN101174192A, through the position detection device and the position indicator, the key processing is transmitted by digital means, but the pressure sensitivity is based on the signal of the induction frequency F0 from the handwriting board through a variable capacitor
  • the time change of charging or discharging of the formed time constant circuit determines the pressure sensitivity. Because the induced frequency F0 will be changed by external factors of the pen and the handwriting board, the pressure sensitivity detection is unstable. As shown in FIG. 1, in the pen pressure detection circuit 25, the pen pressure applied to the variable capacitor 26 whose capacitance changes in response to the pen pressure is converted into a digital value, and the pulses from the detection circuit 18 are sequentially output.
  • the pen pressure detection circuit 25 digitizes the time of charging or discharging through the time constant circuit formed by the variable capacitor 26 according to the signal of the frequency F0 input by the capacitor 27, and its resonance frequency F0 is affected by the external environment, resulting in the accuracy of the pressure sensitivity Unable to reach the guarantee.
  • the present application provides a more stable position detection system and a matching digital stylus.
  • a position detection system includes a power supply module, a detection module, a control module and a pulse module, in which:
  • the power supply module is used to provide power to ensure the normal operation of each part of the position detection system
  • the detection module includes a key detection circuit and a pressure detection circuit, the key detection circuit is used to provide key detection data and processed by the control module to output, the pressure detection circuit is used to provide pressure detection data and pass all The control module outputs after processing;
  • the control module is electrically connected to the power supply module and the detection module, respectively, and is used to process the key detection data and the pressure detection data detected by the key detection circuit and the pressure detection circuit to output a key signal And pressure signals;
  • the pulse module is connected to the control module, and is used to obtain the key signal and the initial reference of the pressure signal output by the control module and convert the key signal and pressure signal into digital signals through form coding Send to the handwriting board.
  • the power supply module includes a resonance circuit and a power extraction circuit
  • the resonance circuit includes a coil and a first capacitor
  • the power extraction circuit is used to extract power from the induced voltage induced on the coil.
  • the power extraction circuit includes at least a diode and a second capacitor, and when the voltage generated by the resonance circuit is higher than the voltage on the second capacitor, the resonance circuit charges the second capacitor.
  • the power supply module further includes a power supply stabilizing circuit, and the power drawn by the power supply extraction circuit forms a stable power supply through the power supply stabilizing circuit, and then is output to various parts of the position detection system.
  • the pressure detection circuit includes a pressure sensor, and the pressure sensor is used to convert the detected pressure into an electrical signal.
  • the key detection circuit includes a key, and the key is a switch key or a touch key.
  • the detection module further includes an angle detection circuit electrically connected to the control module, and the angle detection circuit is used to provide tilt angle detection data and output after being processed by the control module.
  • the pulse module includes a data transmission reference detection circuit and a pulse modulation circuit, and the data transmission reference detection circuit is used to detect the falling edge of the charging end of the power supply module as the detection module and send it to the handwriting The start reference of the key signal and pressure signal of the board.
  • the pulse modulation circuit is a circuit obtained by adjusting parameters of the data transmission reference detection circuit, and the pulse modulation circuit is used to quantify the key signal and pressure signal detected in the detection module, and pass The form coding converts the key signal and pressure signal into digital signals and sends them to the handwriting board.
  • the present application also provides a digital stylus pen, which includes the position detection system as described in any one of the above.
  • the position detection system transmits both key processing and pressure processing in a digital manner, which reduces the influence of pen pressure and keys on other factors, thereby increasing the stability of the position detection system;
  • the tilt angle is also detected by the angle detection circuit and transmitted digitally, which reduces the influence of other factors on the tilt angle; correspondingly, the digital stylus adopts the position detection system, thereby improving the Stability of digital stylus.
  • Figure 1 is a functional block diagram of a related technology position indicator
  • FIG. 2 is a structural block diagram of the position detection system provided by this application.
  • FIG. 3 is a block diagram of the key detection circuit shown in Figure 2;
  • FIG. 4 is a block diagram of the pressure detection circuit shown in Figure 2;
  • Figure 5 is a schematic diagram of the data communication transmission benchmark of the digital stylus
  • Figure 6 is a schematic diagram of data communication between a digital stylus and a handwriting board.
  • Fig. 2 is a structural block diagram of the position detection system provided by this application.
  • the present application provides a position detection system 100, which includes a power supply module 10, a control module 30, a detection module 50, and a pulse module 70.
  • the power supply module 10 is used to provide power to ensure the normal operation of various parts of the position detection system 100.
  • the control module 30 is respectively connected to the power supply module 10, the detection module 50 and the pulse module 70, and is used to perform data detection on the detection module 50 and pass the detected data through the pulse module 70 Output after processing.
  • the detection module 50 is electrically connected to the control module 30 and includes a button detection circuit 51, a pressure detection circuit 53 and an angle detection module 55.
  • the key detection circuit 51 is used to provide key detection data and is processed by the control module 30 for output.
  • the pressure detection circuit 53 is used to provide pressure detection data and is processed by the control module 30 for output.
  • the angle detection circuit 55 is used to provide tilt angle detection data and output after being processed by the control module 30.
  • the pulse detection module 70 includes a data transmission reference detection circuit 71 and a pulse modulation circuit 73.
  • the data transmission reference detection circuit 71 is used to obtain the initial reference of the key signal, pressure signal and tilt angle signal output by the control module 30.
  • the pulse modulation circuit 73 is used to quantize the key signal, pressure signal, and tilt angle signal detected in the detection module, convert them into digital signals through form coding, and send them to the handwriting board.
  • the power supply module 10 includes a resonance circuit 11, a power extraction circuit 13 and a power stabilization circuit 15.
  • the resonance circuit 11 includes a coil 111 and a first capacitor 113.
  • the coil 111 and the first capacitor 113 together form the resonance circuit 11 of a predetermined frequency.
  • the power extraction circuit 13 is used to extract power from the resonance circuit 11.
  • the power extraction circuit 13 extracts power from the induced voltage on the coil 111, and the power extraction circuit 13 is composed of a diode 131 And a second capacitor 133.
  • the resonance circuit 11 charges the second capacitor 133.
  • the power supply voltage stabilizing circuit 15 forms the stable power supply required by the position detection system 100 from the power extracted by the power supply extraction circuit 13 and outputs it to various parts of the position detection system 100, keeping the output voltage basically unchanged, and then The stable operation of each part of the position detection system 100 is ensured.
  • the power supply module 10 obtains power from the resonance circuit 11 and the power extraction circuit 13.
  • the power supply module may obtain the power supply power through any other means, as long as the power supply module 10 can provide power for each part of the position detection system 100 to ensure that the position detection system All parts in 100 can work normally.
  • the power supply module 10 uses the resonance circuit 11 and the power extraction circuit 13 to obtain power, so that there is no battery in the digital stylus using the position detection system 100, which is effective
  • the weight of the digital stylus is reduced, which makes it easier and more convenient for users to use.
  • FIG. 3 is a structural block diagram of the button detection circuit shown in FIG.
  • the key detection circuit 51 includes a first key 511 and a second key 513.
  • the first key 511 and the second key 513 are detected by the control module 30 and processed by key debounce for transmission to the handwriting board.
  • the anti-shake processing includes hardware anti-shake and software anti-shake.
  • the hardware debounce is used when the number of buttons is small, and the software debounce is used when the number of buttons is large.
  • hardware debounce is used.
  • the switch used for the key debounced key is a mechanical elastic switch.
  • FIG. 4 is a structural block diagram of the pressure detection circuit shown in FIG. 2.
  • the pressure detection circuit 53 uses an independent pressure sensor R1 to detect the pressure, and the accurate absolute pressure value can be detected and read out by the control module 30 for transmission to the handwriting board via communication.
  • the pressure sensor may be any sensor in the prior art that converts pressure into an electric signal.
  • the angle detection circuit 55 detects the inclination angle by using an independent angle sensor to detect the inclination angle, and detects and reads out the inclination angle by the control module 30, so as to be transmitted to the handwriting board through communication.
  • the angle sensor may be any sensor in the prior art that converts the tilt angle into an electric signal.
  • FIG. 5 is a schematic diagram of the data communication transmission benchmark of the digital stylus pen.
  • FIG. 6 is a schematic diagram of data communication between the digital stylus and the handwriting board.
  • the pulse modulation circuit 73 is a circuit obtained by adjusting parameters of the data transmission reference detection circuit 71.
  • the pulse modulation circuit 73 detects the waveform of the pen signal of the digital stylus from the signal after the initial reference, and then obtains the digital signal transmitted to the handwriting board through a certain form of coding.
  • the pen signal of the digital stylus is signals such as keys, pressure, and tilt angle detected from the key detection circuit 51, the pressure detection circuit 53, and the angle detection circuit 55.
  • the pulse modulation circuit 73 samples the communication signal, it quantizes the information of the key, pressure and tilt angle detected in the detection module 50, converts it into a digital signal through form coding, and sends it to the handwriting board .
  • the pen signal is modulated into a waveform and represented by a digital signal.
  • the way to send the digital signal to the handwriting board is to transmit the "1" signal to be transmitted unchanged, and the "0" to be transmitted through all
  • the control module 30 controls the pulse to be "0" to be emitted.
  • the way of sending the digital signal to the handwriting board can also be that the "0" signal to be transmitted is transmitted unchanged, and the "1" to be transmitted is controlled by the control module 30 to emit its pulses.
  • the working principle of the position detection system 100 the control module 30 waits after the communication ends, and when it receives the rising edge of the charging signal generated by the power supply module 10 as shown in FIG. 5, the rising edge triggers , The control module 30 is awakened, and during the charging process provided by the power supply module 10, the control module 30 realizes the control of the button detection circuit 51, the pressure detection circuit 53, and the angle detection circuit 55 signal detection, when the charging of the power supply module 10 ends, its falling edge is the beginning of the communication signal, and what will be transmitted at this time passes through the button detection circuit 51, the pressure detection circuit 53 and the angle detection circuit 55.
  • Pen signals such as key signals, pressure signals, and tilt angle signals obtained through detection are encoded and then the communication signals are modulated to obtain an output waveform as shown in FIG. 6.
  • the handwriting board After the handwriting board receives the signal, it can decode the key, pen pressure and tilt angle signal information of the digital stylus according to a predetermined communication protocol.
  • the present application also provides a digital stylus (not shown), and the digital stylus includes the position detection system 100. It is understandable that by digitally transmitting the keys, pressure, and tilt angle signals between the digital stylus and the handwriting board, the instability of keys, pen pressure and tilt angles affected by other factors is reduced. This allows the digital stylus and the handwriting pad to detect and recognize keys, pen pressure, and tilt angles more accurately.
  • the position detection system provided by the present application adds the key detection circuit 51 and the pressure detection circuit 53, which transmits both key processing and pressure processing in a digital manner, reducing the influence of pen pressure and keys on other factors.
  • this application also detects the tilt angle through the angle detection circuit 55 and transmits it in a digital manner, reducing the influence of the tilt angle on other factors; correspondingly, the The digital stylus adopts the position detection system, thereby improving the stability of the digital stylus.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

一种位置检测***，包括供电模组10、检测模组50、控制模组30和脉冲模组70。其中，所述供电模组10用于提供电源，以保证所述位置检测***中各部分正常工作。所述检测模组50包括按键检测电路51、压力检测电路53和角度检测电路55，所述按键检测电路51用于提供按键检测数据并通过所述控制模组30处理后输出，所述压力检测电路53用于提供压力检测数据并通过所述控制模组30处理后输出。所述控制模组30用于对检测的数据进行处理后输出信号。所述脉冲模组70与所述控制模组30连接，其用于获得所述控制模组30输出的按键信号和压力信号的起始基准，并通过形式编码将所述按键信号和压力信号转换为数字信号后发送至手写板。与相关技术相比，所述位置检测***及数字手写笔具有更好的稳定性。

Description

位置检测***及数字手写笔 技术领域
本申请涉及计算机***输入设备技术领域，尤其涉及一种位置检测***及数字手写笔。
 背景技术
随着科技进步，数字化电子信息设备已具备轨迹输入的功能，这种功能的实现通常采用手写输入的方式。作为数字化电子信息设备的数字手写笔得到了广泛的应用，其不但能够通过手写输入文字，还可以实现绘画、点控操作等。
现有技术中的数字手写笔通常与配套的手写板共同使用，数字手写笔上都要做压力和按键等功能，现有技术中的数字手写笔实现对压力和按键等功能的检测包括如下两种方式：
一种为改变所述数字手写笔的震荡参数方式，从而使手写板收到的感应频率改变而以判断按键及得知压感的大小。然而在笔的压力下，改变笔线圈和磁芯的相对位置，从而使笔的震荡频率改变，进而判断压感的大小，这样会造成生产时频率精度要求太高，生产难度很高，使出水压感大小等存在不确定性，即造成出水不稳定等问题。
另一种为CN101174192A所采用的方式，通过位置检测装置及位置指示器，其按键处理是通过数字方式传输，但是，压感却是要根据来自手写板的感应频率F0的信号，通过可变电容器构成的时间常数电路充电或放电的时间变化确定压感，由于感应的频率F0会受笔和手写板外部因素变化而改变，造成压感检测的不稳定性。如图1所示在笔压检测电路25中，将施加在对应笔压而变化容量的可变电容器26上的笔压转换为数字值，对应来自检波电路18的脉冲依次输出。该笔压检测电路25根据计算由电容器27输入的频率F0的信号，将通过由可变电容器26构成的时间常数电路充电或放电的时间数字化，其谐振频率F0受外界影响导致压感的准确性无法达到保障。
因此，有必要提供一种能解决以上问题的位置检测***及数字手写笔。
 技术问题
针对现有技术的数字手写笔对压力值和按键存在不确定性，容易造成出水不稳定的问题，本申请提供了一种稳定性更佳的位置检测***及相匹配的数字手写笔。
 技术解决方案
一种位置检测***，包括供电模组、检测模组、控制模组和脉冲模组，其中：
所述供电模组用于提供电源，以保证所述位置检测***中各部分正常工作；
所述检测模组包括按键检测电路和压力检测电路，所述按键检测电路用于提供按键检测数据并通过所述控制模组处理后输出，所述压力检测电路用于提供压力检测数据并通过所述控制模组处理后输出；
所述控制模组分别与所述供电模组和所述检测模组电连接，其用于对所述按键检测电路和压力检测电路检测到的按键检测数据和压力检测数据进行处理后输出按键信号和压力信号；
所述脉冲模组与所述控制模组连接，其用于获取所述控制模组输出的按键信号和压力信号的起始基准并通过形式编码将所述按键信号和压力信号转换为数字信号后发送至手写板。
优选的，所述供电模组包括共振电路和电源抽出电路，所述共振电路包括线圈和第一电容器，所述电源抽出电路用于从所述线圈上感应的感应电压中抽出电源。
优选的，所述电源抽出电路至少包括二极管和第二电容器，当所述共振电路产生的电压高于所述第二电容器上的电压时，所述共振电路对所述第二电容器进行充电。
优选的，所述供电模组还包括电源稳压电路，所述电源抽出电路抽出的电源经过所述电源稳压电路形成稳定电源后输出至所述位置检测***中各部分。
优选的，所述压力检测电路包括压力传感器，所述压力传感器用于将检测到的压力转换为电信号。
优选的，所述按键检测电路包括按键，所述按键为开关按键或触摸按键。
优选的，所述检测模组还包括与所述控制模组电连接的角度检测电路，所述角度检测电路用于提供倾斜角检测数据并通过所述控制模组处理后输出。
优选的，所述脉冲模组包括数据传输基准检测电路和脉冲调制电路，所述数据传输基准检测电路用于检测所述供电模组充电结束的下降沿作为所述检测模组发送至所述手写板的按键信号和压力信号的起始基准。
优选的，所述脉冲调制电路为所述数据传输基准检测电路调整参数后得到的电路，所述脉冲调制电路用于对所述检测模组中检测得到的按键信号和压力信号进行量化，并通过形式编码将所述按键信号和压力信号转换为数字信号后发送至所述手写板。
本申请还提供了一种数字手写笔，所述数字手写笔包括如上述中任一项所述的位置检测***。
 有益效果
与相关技术相比，本申请提供的位置检测***将按键处理和压力处理均通过数字方式传输，减少了笔压、按键受到其他因素的影响，从而增加了所述位置检测***的稳定性；同时，本申请还通过所述角度检测电路检测倾斜角并通过数字方式传输，减少了倾斜角受其他因素的影响；相对应的，所述数字手写笔采用所述位置检测***，从而提升了所述数字手写笔的稳定性。
 附图说明
图1为相关技术的位置指示器构成的原理框图；
图2为本申请提供的位置检测***的结构框图；
图3为图2所示按键检测电路的结构框图；
图4为图2所示压力检测电路的结构框图；
图5为数字手写笔的数据通信传输基准示意图；
图6为数字手写笔与手写板的数据通信示意图。
 本发明的最佳实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一电路实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图2，为本申请提供的位置检测***的结构框图。本申请提供了一种位置检测***100，其包括供电模组10、控制模组30、检测模组50和脉冲模组70。所述供电模组10用于提供电源保证所述位置检测***100中各部分正常工作。所述控制模组30分别与所述供电模组10、检测模组50和脉冲模组70连接，用于对检测模组50进行数据检测，并将检测到的数据通过所述脉冲模组70进行处理后输出。所述检测模组50与所述控制模组30电连接，其包括按键检测电路51、压力检测电路53和角度检测模组55。所述按键检测电路51用于提供按键检测数据并通过所述控制模组30处理后输出，所述压力检测电路53用于提供压力检测数据并通过所述控制模组30处理后输出，所述角度检测电路55用于提供倾斜角检测数据并通过所述控制模组30处理后输出。所述脉冲检测模组70包括数据传输基准检测电路71和脉冲调制电路73。所述数据传输基准检测电路71用于用于获取所述控制模组30输出的按键信号、压力信号和倾斜角信号的起始基准。所述脉冲调制电路73用于对所述检测模组中检测得到的按键信号、压力信号和倾斜角信号进行量化，并通过形式编码将其转换为数字信号后发送至手写板。
具体的，所述供电模组10包括共振电路11、电源抽出电路13及电源稳压电路15。所述共振电路11包括线圈111及第一电容器113。所述线圈111与所述第一电容器113共同组成既定频率的所述共振电路11。所述电源抽出电路13用于从所述共振电路11中抽出电源，具体的，所述电源抽出电路13从所述线圈111上感应的感应电压中抽出电源，所述电源抽出电路13由二极管131及第二电容器133组成。在所述共振电路11上产生的电压比所述第二电容器133上保持电压的对应电压高时，所述共振电路11对所述第二电容器133进行充电。所述电源稳压电路15将所述电源抽出电路13抽出的电源形成所述位置检测***100所需的稳定电源后输出至所述位置检测***100中各部分，保持输出电压基本不变，进而保证所述位置检测***100中各部分的稳定工作。
在本实施例中，所述供电模组10由所述共振电路11与所述电源抽出电路13取得电源电量。当然，在其他实施例中，所述供电模组可通过其他任意方式取得电源电量，只需所述供电模组10能为所述位置检测***100中各部分提供电源，保证所述位置检测***100中各部分正常工作即可。
在本实施例中，优选的，所述供电模组10采用所述共振电路11与所述电源抽出电路13取得电源，使得采用所述位置检测***100的数字手写笔中无电池，这样可以有效的降低所述数字手写笔的重量，在用户使用过程中更加的轻松方便。
请结合参阅图3，图3为图2所示按键检测电路的结构框图。所述按键检测电路51包括第一按键511和第二按键513，所述第一按键511和第二按键513通过所述控制模组30检测以及按键消抖处理后以备传输给所述手写板。所述防抖处理包括硬件消抖和软件消抖。所述硬件消抖用于按键数量较少的情况，所述软件消抖用于按键数量较多的情况，本实施例中采用硬件消抖。具体的，所述按键消抖的按键所用开关为机械弹性开关。
请结合参阅图4，图4为图2所示压力检测电路的结构框图。所述压力检测电路53对压力的检测为用独立的压力传感器R1进行检测，可以将准确的压力绝对值通过所述控制模组30检测读出，以备通过通信传输至所述手写板。其中，所述压力传感器可为将压力转换为电信号的任意现有技术中的传感器。
所述角度检测电路55对倾斜角的检测为采用独立的角度传感器对倾斜角进行检测，并通过所述控制模组30检测读出，以备通过通信传输至所述手写板。其中，所述角度传感器可为将倾斜角转换为电信号的任意现有技术中的传感器。
请结合参阅图5，图5为数字手写笔的数据通信传输基准示意图。所述控制模组30接收到所述检测模组50的信号后，通过所述数据传输基准检测电路71检测得到如图5所示的所述供电模组10充电结束的下降沿为所述数字手写笔进行通信的起始基准，即充电信号下降沿为通信信号的起始基准。
请结合参阅图6，图6为数字手写笔与手写板的数据通信示意图。所述脉冲调制电路73为所述数据传输基准检测电路71调整参数后得到的电路。所述脉冲调制电路73对所述数字手写笔的笔信号从所述起始基准之后的信号检测出波形，进而通过一定的形式编码得到发射到所述手写板的数字信号。其中，所述数字手写笔的笔信号为从所述按键检测电路51、所述压力检测电路53及所述角度检测电路55中检测得到的按键、压力和倾斜角等信号。所述脉冲调制电路73对通信信号进行抽样后，将所述检测模组50中检测得到的按键、压力和倾斜角的信息量化，通过形式编码将其转换为数字信号后发送至所述手写板。如图6所示将所述笔信号调制出波形并用数字信号表示，将数字信号发送至所述手写板的方式是将要发射的“1”信号不变发射出去，将要发射的“0”通过所述控制模组30控制让其脉冲为“0”发射出去。此外，将数字信号发送至所述手写板的方式也可以是将要发射的“0”信号不变发射出去，将要发射的“1”通过所述控制模组30控制让其脉冲发射出去。
所述位置检测***100的工作原理：所述控制模组30在通信结束后进行待机，在接收到如图5所示的所述供电模组10产生的充电信号上升沿时，即上升沿触发，所述控制模组30被唤醒，在所述供电模组10提供的充电过程中，所述控制模组30实现对所述按键检测电路51、所述压力检测电路53及所述角度检测电路55的信号检测，当所述供电模组10充电结束时，其下降沿为通信信号的开始，这时将要发射的通过所述按键检测电路51、所述压力检测电路53及所述角度检测电路55检测得到的按键信号、压力信号及倾斜角信号等笔信号，将所述笔信号通过编码后调制其通信信号得到如图6所示输出波形。所述手写板接收到所述信号后就可以按照预定的通信协议解码得到所述数字手写笔的按键、笔压及倾斜角信号信息。
同时本申请还提供了一种数字手写笔（图未示），所述数字手写笔包括所述位置检测***100。可以理解的是，通过将按键、压力和倾斜角信号在所述数字手写笔与所述手写板之间通过数字方式传输，减少了按键、笔压及倾斜角受到其他因素影响而产生不稳定性的问题，让所述数字手写笔与所述手写板之间可以更加精准的对按键、笔压及倾斜角进行检测和识别。
与相关技术相比，本申请提供的位置检测***加入所述按键检测电路51和压力检测电路53，将按键处理和压力处理均通过数字方式传输，减少了笔压、按键受到其他因素的影响，从而增加了所述位置检测***的稳定性；同时，本申请还通过所述角度检测电,55检测倾斜角并通过数字方式传输，减少了倾斜角受其他因素的影响；相对应的，所述数字手写笔采用所述位置检测***，从而提升了所述数字手写笔的稳定性。
以上所述仅为本申请的实施例，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本申请的专利保护范围内。
 

Claims (10)

  1. 一种位置检测***，其特征在于，包括供电模组、检测模组、控制模组和脉冲模组，其中：
    所述供电模组用于提供电源，以保证所述位置检测***中各部分正常工作；
    所述检测模组包括按键检测电路和压力检测电路，所述按键检测电路用于提供按键检测数据并通过所述控制模组处理后输出，所述压力检测电路用于提供压力检测数据并通过所述控制模组处理后输出；
    所述控制模组分别与所述供电模组和所述检测模组电连接，其用于对所述按键检测电路和压力检测电路检测到的按键检测数据和压力检测数据进行处理后输出按键信号和压力信号；
    所述脉冲模组与所述控制模组连接，其用于获取所述控制模组输出的按键信号和压力信号的起始基准并通过形式编码将所述按键信号和压力信号转换为数字信号后发送至手写板。
  2. 根据权利要求1所述的位置检测***，其特征在于，所述供电模组包括共振电路和电源抽出电路，所述共振电路包括线圈和第一电容器，所述电源抽出电路用于从所述线圈上感应的感应电压中抽出电源。
  3. 根据权利要求2所述的位置检测***，其特征在于，所述电源抽出电路至少包括二极管和第二电容器，当所述共振电路产生的电压高于所述第二电容器上的电压时，所述共振电路对所述第二电容器进行充电。
  4. 根据权利要求2所述的位置检测***，其特征在于，所述供电模组还包括电源稳压电路，所述电源抽出电路抽出的电源经过所述电源稳压电路形成稳定电源后输出至所述位置检测***中各部分。
  5. 根据权利要求1所述的位置检测***，其特征在于，所述压力检测电路包括压力传感器，所述压力传感器用于将检测到的压力转换为电信号。
  6. 根据权利要求1所述的位置检测***，其特征在于，所述按键检测电路包括按键，所述按键为开关按键或触摸按键。
  7. 根据权利要求1所述的位置检测***，其特征在于，所述检测模组还包括与所述控制模组电连接的角度检测电路，所述角度检测电路用于提供倾斜角检测数据并通过所述控制模组处理后输出。
  8. 根据权利要求3所述的位置检测***，其特征在于，所述脉冲模组包括数据传输基准检测电路和脉冲调制电路，所述数据传输基准检测电路用于检测所述供电模组充电结束的下降沿作为所述检测模组发送至所述手写板的按键信号和压力信号的起始基准。
  9. 根据权利要求8所述的位置检测***，其特征在于，所述脉冲调制电路为所述数据传输基准检测电路调整参数后得到的电路，所述脉冲调制电路用于对所述检测模组中检测得到的按键信号和压力信号进行量化，并通过形式编码将所述按键信号和压力信号转换为数字信号后发送至所述手写板。
  10. 一种数字手写笔，其特征在于，所述数字手写笔包括如权利要求1至9中任一项所述的位置检测***。
PCT/CN2020/071087 2019-01-16 2020-01-09 位置检测***及数字手写笔 WO2020147638A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020217023313A KR20210104878A (ko) 2019-01-16 2020-01-09 위치 감지 시스템 및 디지털 스타일러스
JP2021541117A JP7245342B2 (ja) 2019-01-16 2020-01-09 位置検出システム及びデジタルスタイラス
EP20742067.0A EP3913470A4 (en) 2019-01-16 2020-01-09 POSITION DETECTION SYSTEM AND DIGITAL WRITING PEN
US17/377,498 US20210349597A1 (en) 2019-01-16 2021-07-16 Position detection system and digital stylus using same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910042522.0A CN109710094A (zh) 2019-01-16 2019-01-16 位置检测***及电子手写笔
CN201910042522.0 2019-01-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/377,498 Continuation US20210349597A1 (en) 2019-01-16 2021-07-16 Position detection system and digital stylus using same

Publications (1)

Publication Number Publication Date
WO2020147638A1 true WO2020147638A1 (zh) 2020-07-23

Family

ID=66262146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/071087 WO2020147638A1 (zh) 2019-01-16 2020-01-09 位置检测***及数字手写笔

Country Status (6)

Country Link
US (1) US20210349597A1 (zh)
EP (1) EP3913470A4 (zh)
JP (1) JP7245342B2 (zh)
KR (1) KR20210104878A (zh)
CN (1) CN109710094A (zh)
WO (1) WO2020147638A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109710094A (zh) * 2019-01-16 2019-05-03 深圳市绘王动漫科技有限公司 位置检测***及电子手写笔
CN110633025B (zh) * 2019-09-26 2023-07-28 深圳市绘王动漫科技有限公司 位置检测装置及手写输入***
CN111522456B (zh) * 2020-05-26 2023-07-18 深圳市绘王动漫科技有限公司 双磁芯手写数字笔
CN113568515A (zh) * 2021-08-04 2021-10-29 深圳市绘王动漫科技有限公司 一种电子手写笔和手写装置
CN114650237A (zh) * 2022-02-16 2022-06-21 中国人民解放军海军工程大学 一种隔离信号检测控制装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101174192A (zh) 2006-10-31 2008-05-07 株式会社华科姆 位置检测装置及位置指示器
CN105278704A (zh) * 2014-07-17 2016-01-27 致伸科技股份有限公司 触控笔
CN105912175A (zh) * 2015-02-20 2016-08-31 株式会社和冠 位置指示器、信号处理电路、信号供给控制方法及信号处理方法
US20180011550A1 (en) * 2016-02-25 2018-01-11 O.Pen S.R.O. Wireless positioning pen with pressure-sensitive tip
CN108572747A (zh) * 2017-03-07 2018-09-25 中国科学院软件研究所 一种用于触控设备的数字通用笔
CN109710094A (zh) * 2019-01-16 2019-05-03 深圳市绘王动漫科技有限公司 位置检测***及电子手写笔

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4280562B2 (ja) * 2003-06-16 2009-06-17 株式会社ワコム 位置指示器
CN101133382B (zh) 2004-12-01 2016-03-30 微软技术许可有限责任公司 位置探测***和用于使用和控制该位置探测***的装置和方法
KR101076369B1 (ko) * 2010-07-06 2011-10-25 씨에스제이글로벌 주식회사 디지타이징 장치용 전자펜과 태블릿
US8982062B2 (en) * 2011-05-09 2015-03-17 Blackberry Limited Multi-modal user input device
KR102081817B1 (ko) * 2013-07-01 2020-02-26 삼성전자주식회사 디지타이저 모드 전환 방법
KR20160096913A (ko) * 2015-02-06 2016-08-17 주식회사 페이턴틴 디지타이저 장치
CN106095174A (zh) * 2016-06-12 2016-11-09 苏州芯沃科电子科技有限公司 电子白板主动笔及触控输入***和驱动方法
CN110770681B (zh) 2017-07-06 2023-08-29 株式会社和冠 电子笔

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101174192A (zh) 2006-10-31 2008-05-07 株式会社华科姆 位置检测装置及位置指示器
CN105278704A (zh) * 2014-07-17 2016-01-27 致伸科技股份有限公司 触控笔
CN105912175A (zh) * 2015-02-20 2016-08-31 株式会社和冠 位置指示器、信号处理电路、信号供给控制方法及信号处理方法
US20180011550A1 (en) * 2016-02-25 2018-01-11 O.Pen S.R.O. Wireless positioning pen with pressure-sensitive tip
CN108572747A (zh) * 2017-03-07 2018-09-25 中国科学院软件研究所 一种用于触控设备的数字通用笔
CN109710094A (zh) * 2019-01-16 2019-05-03 深圳市绘王动漫科技有限公司 位置检测***及电子手写笔

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3913470A4

Also Published As

Publication number Publication date
CN109710094A (zh) 2019-05-03
US20210349597A1 (en) 2021-11-11
EP3913470A4 (en) 2022-03-09
EP3913470A1 (en) 2021-11-24
JP7245342B2 (ja) 2023-03-23
KR20210104878A (ko) 2021-08-25
JP2022518705A (ja) 2022-03-16

Similar Documents

Publication Publication Date Title
WO2020147638A1 (zh) 位置检测***及数字手写笔
US9081569B2 (en) Active stylus force sensing mechanism for generating a wakeup interrupt to the controller
US9110505B2 (en) Wearable motion sensing computing interface
US10168775B2 (en) Wearable motion sensing computing interface
JP4866941B2 (ja) 位置決定格子を備えたパネル
CN107426434B (zh) 输入装置和电子设备
US20160004338A1 (en) Stylus, synchronization system and method thereof for touch detection
KR101076369B1 (ko) 디지타이징 장치용 전자펜과 태블릿
KR20220145383A (ko) 회로 제어 장치 및 방법
KR20210101525A (ko) 무선 전력 전송 중 통신 성능 안정화 방법 및 장치
CN201699844U (zh) 一种重力感应式电视机遥控器
US10754479B2 (en) Touch sensing system and data transmission method of a touch panel
CN104766462A (zh) 一种声波遥控***以及声波遥控方法
CN108521417B (zh) 一种通信处理方法及移动终端
TWI731650B (zh) 觸控筆、觸控電子裝置與觸控系統
CN110456928B (zh) 多功能手写输入笔及多功能手写输入***
US11513615B2 (en) Digital electromagnetic stylus, input system, and method for controlling same
KR101369160B1 (ko) 보청장치 및 이를 이용한 청력측정 및 보정방법
CN111522456A (zh) 双磁芯手写数字笔
CN113568515A (zh) 一种电子手写笔和手写装置
CN216291359U (zh) 一种手势感应麦克风
CN212873433U (zh) 一种书写笔和书写***
WO2019169628A1 (zh) 手写笔、写字板及状态参数传输方法
WO2019161572A1 (zh) 手写笔、手写板及手写笔电量获取方法
CN110633025B (zh) 位置检测装置及手写输入***

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20742067

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021541117

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20217023313

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2020742067

Country of ref document: EP

Effective date: 20210816