WO2020073327A1 - 手写笔及输入装置 - Google Patents

手写笔及输入装置 Download PDF

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Publication number
WO2020073327A1
WO2020073327A1 PCT/CN2018/110104 CN2018110104W WO2020073327A1 WO 2020073327 A1 WO2020073327 A1 WO 2020073327A1 CN 2018110104 W CN2018110104 W CN 2018110104W WO 2020073327 A1 WO2020073327 A1 WO 2020073327A1
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WO
WIPO (PCT)
Prior art keywords
stylus
writing
processor
distance
signal output
Prior art date
Application number
PCT/CN2018/110104
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English (en)
French (fr)
Inventor
杨必华
陈臻伟
Original Assignee
深圳市柔宇科技有限公司
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 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201880096063.8A priority Critical patent/CN112689815A/zh
Priority to PCT/CN2018/110104 priority patent/WO2020073327A1/zh
Publication of WO2020073327A1 publication Critical patent/WO2020073327A1/zh

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    • 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

Definitions

  • This application relates to the technical field of human-computer interaction, in particular to a stylus and an input device containing the stylus.
  • the way the stylus enters the terminal on the writing board belongs to a common input device in human-computer interaction.
  • This input method is relatively friendly to some users who are not familiar with pinyin, or some users who pursue personalization such as handwriting.
  • the use of stylus for drawing input on the writing board is also more common.
  • the stylus is an input tool independent of the keyboard and mouse.
  • This application provides a stylus with a simple structure that can restore the true writing experience.
  • the stylus in this application includes the following technical solutions:
  • a stylus pen for input on a writing board including a pen body, a signal output unit, a distance measuring unit and a circuit board, the pen body includes a writing end, and the signal output unit is located at the writing end,
  • the distance measuring unit and the circuit board are provided on the pen body, the circuit board is provided with a processor, and the signal output unit and the distance measuring unit are both electrically connected with the processor.
  • the distance measuring unit is used to detect the distance of the stylus relative to the writing board when the signal output unit and the writing board are inductive, and generate a distance signal to send to the processor.
  • the processor controls the signal output unit to send a high-voltage pulse signal corresponding to the distance to the tablet or terminal device.
  • the stylus of the present application is provided with a signal output unit at the writing end, and when the user holds the stylus, the writing end is brought close to the writing board for writing, and the writing board can perceive the Write track.
  • the stylus of the present application measures the writing board through a distance measuring unit provided in the pen body, thereby forming a distance signal.
  • the inclination angle of the stylus relative to the writing board can be measured by conversion, and the user's writing gesture can be perceived through the distance or the inclination angle.
  • the processor transmits the distance or the inclination letter to the writing board or terminal device, it can more realistically imitate the user's handwriting, thereby improving the user experience of the stylus.
  • the application also relates to an input device, including a writing board and the above-mentioned stylus.
  • the input device of the present application completes the capture of the user's handwriting through the distance measuring unit and the signal output unit, and has a simple structure and is not easily interfered by the outside world.
  • FIG. 1 is a schematic diagram of an input device in an embodiment of the present application
  • FIG. 2 is a partially enlarged schematic view of the stylus of FIG. 1;
  • FIG. 3 is a schematic cross-sectional view of the input device of FIG. 1;
  • FIG. 4 is a schematic diagram of a stylus pen in another embodiment of the present application.
  • FIG. 5 is a schematic cross-sectional view of another state of the stylus of the present application.
  • FIG. 6 is a schematic diagram of a circuit structure of a circuit board in an embodiment of a stylus pen of the present application
  • 6a is a waveform diagram of high-voltage pulse signal transmission of the stylus of the present application.
  • FIG. 7 is a waveform diagram of high-voltage pulse signal transmission of another embodiment of the stylus of the present application.
  • FIG. 8 is a schematic diagram of an input device in another embodiment of the present application.
  • FIG. 9 is a waveform diagram of high-voltage pulse signal transmission of another embodiment of the stylus of the present application.
  • FIG. 10 is a schematic diagram of an input device in an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a writing board in another embodiment of the present application.
  • FIG. 1 shows an input device 100 according to an embodiment of the present application, including a stylus pen 10 and a writing pad 20.
  • the stylus pen 10 includes a pen body 14, a signal output unit 12, a distance measuring unit 13, and a circuit board 15.
  • the pen body 14 is rod-shaped, and the pen body 14 includes opposite writing ends 101 and a tail end 102.
  • the writing tip 101 is provided with a pen tip 11 for contacting with the writing pad 20 and performing a handwriting input operation on the writing pad 20.
  • An accommodating space is defined between the writing end 101 and the trailing end 102, and the accommodating space can accommodate components such as the circuit board 15 of the stylus 10, so as to realize the normal operation of the stylus 10.
  • the signal output unit 12 and the circuit board 15 are accommodated in the aforementioned accommodation space of the pen body 14.
  • the pen tip 11 is exposed at the writing end 101 of the pen body 14.
  • the stylus 10 is writing, the pen tip 11 contacts the writing board 20.
  • the pen tip 11 may be made of conductive material such as graphite to prevent the stylus 10 from scratching the writing board 20.
  • the stylus 10 further includes a processor 151 disposed on the circuit board 15.
  • the signal output unit 12 is electrically connected to the processor 151 and is controlled by the processor 151.
  • the processor 151 controls the signal output unit 12 to output a signal that can be recognized by the tablet 20 to the tablet 20.
  • the signal output unit 12 sends a capacitive sensing signal to the writing board 20, and the capacitive sensing signal may be a high-voltage pulse signal.
  • the writing board 20 is an electromagnetic screen
  • the signal output unit 12 sends an electromagnetic induction signal to the electromagnetic writing board.
  • the pen tip 11 is made of a conductive material
  • the signal output unit 12 is electrically connected to the pen tip 11, and the pen tip 11 is exposed at the writing end 101.
  • the capacitive induction signal or the electromagnetic induction signal sent by the signal output unit 12 can be transmitted to the writing pad 20 through the pen tip 11, and the capacitance or electromagnetic at the position where the writing pad 20 is in contact with the pen tip 11 changes. Therefore, the signal sent by the signal output unit 12 to the writing board 20 helps the writing board 20 more accurately recognize the position of the pen tip 11 when the stylus 10 is writing, and further recognizes that the writing of the stylus 11 on the writing board 20 Handwriting.
  • the signal output unit 12 is disposed near the pen tip 11, for example, directly on the pen tip 11.
  • the distance measuring unit 13 is disposed on the outer side wall of the pen body 14 and is used to detect the vertical distance between the distance measuring unit 13 and the writing board 20 when the user writes on the writing board 20 using the stylus 10.
  • the distance measuring unit 13 is provided outside the pen body 14 at a position close to the writing end 101. In this way, it is possible to prevent the user from blocking the distance measuring unit 13 when writing with the stylus pen 10.
  • the distance measuring unit 13 is provided at a position where the pen body 14 and the writing end 101 meet. Referring to FIG. 2, the distance measuring unit 13 includes a transmitting end 131 and a receiving end 132. Both the transmitting end 131 and the receiving end 132 are electrically connected to the processor 151.
  • the processor 151 controls the transmitting end 131 to send a distance measuring signal to the writing board 20, and controls The receiving end 132 receives the distance measuring signal reflected back from the writing board 20.
  • the distance measuring unit 13 sends a distance measuring signal through the transmitting end 131 and the time difference or other parameters of the distance measuring signal received by the receiving end 132 can obtain the vertical distance of the distance sensing unit 13 on the stylus 10 relative to the writing board 20 D.
  • the distance measuring unit 13 may be an infrared, laser, ultrasonic, or other distance measuring unit.
  • the processor 151 can calculate the stylus pen 10 when writing by the following formula (1) The inclination angle ⁇ with the writing board 20.
  • the change of the inclination angle ⁇ between the stylus 10 and the writing board 20 changes the focus point of the pen tip 11 during the writing process, which causes the thickness of the handwriting to appear difference. Therefore, the difference in the thickness of the handwriting when the user performs the writing operation can be known from the inclination angle ⁇ .
  • the processor 151 may send the calculated inclination angle ⁇ to the tablet 20 or directly to the terminal device 300 connected to the tablet 20.
  • the processor 151 may carry the inclination angle ⁇ in the capacitance induction signal or electromagnetic induction signal to be sent to the tablet 20.
  • the stylus pen 10 further includes another signal output unit connected to the processor 151, and sends the tilt angle ⁇ to the tablet 20 or the terminal device 300 through the another signal output unit, so that the tablet 20 or the terminal device 300 more accurately restores the user's handwriting.
  • the stylus pen 10 further includes a pressure sensor 111 for recognizing the pressure value of the pen tip 11 when the stylus pen 10 is writing.
  • the pressure sensor 111 is provided on the end of the pen lead connected to the pen tip 11 away from the pen tip 11.
  • the pressure sensor 111 can sense the pressure of the stylus 10 on the writing board 20 when the stylus 10 is writing, and generate a pressure signal.
  • the pressure sensor 111 is electrically connected to the processor 151 and transmits the sensed pressure value to the processor 151. After receiving the pressure value, the processor 151 sends the pressure value and the distance value D (or the inclination angle ⁇ ) to the tablet 20 or the terminal device 300 together.
  • the stylus 10 includes a tapered surface 112 at the writing end 101.
  • the tapered surface 112 transitions from the shape of the body of the stylus 10 to the tip 11.
  • the signal output unit 12 is disposed on the end surface of the cone surface 112 close to the pen tip 11. In this way, the working distance between the signal output unit 12 and the tablet 20 is shortened.
  • the signal output unit 12 is a metal ring. The metal ring-shaped signal output unit 12 can ensure that the stylus 10 can output an effective sensing signal that senses with the writing board 20 in any holding direction and angle.
  • the signal output unit 12 may be disposed near an electrode on the pen tip 11, as shown in FIG. 1, the electrode may have a circular ring shape.
  • the signal output unit 12 conforms to the shape of the tapered surface 112. In this way, the coupling area of the signal output unit 12 and the writing board 20 can be further increased, and the signal transmission efficiency between the two can be enhanced.
  • the distance measuring unit 13 may be provided on the cone surface 112. Because the tapered surface 112 itself has a certain initial inclination angle with respect to the writing board 20, the distance measuring unit 13 can also perform effective distance measurement on the writing board 20 in a relatively vertical writing state. In this way, the applicability of the input device 100 of the present application is expanded to a certain extent.
  • the shape of the stylus pen 10 includes a holding portion 40. After the user holds the stylus pen 10 according to the prompt of the holding portion 40 when writing, the distance measuring unit 13 can be guaranteed to face the writing board 20.
  • the grip 40 includes a mark 42 attached to the pen body 14. The mark 42 is used to inform the user where to hold the stylus 10.
  • the holding portion 40 is a groove 41 provided on the pen body 14 for receiving a finger holding the stylus pen 10. After the fingers of the user holding the pen fall into the grooves 41 respectively, it can help the user correct the posture of holding the pen.
  • the stylus pen 10 includes a plurality of distance measuring units 13.
  • the distances between the plurality of distance measuring units 13 and the pen tip 11 are the same, that is, the plurality of distance measuring units 13 are disposed at positions where the outer side wall of the stylus 10 is at the same height or cross section.
  • the number of distance measurement units 13 is four, and the axial distance measurement angle between the two adjacent distance measurement units 13 and the stylus pen 10 is approximately 90 degrees. It can be understood that the number of distance measuring units 13 is not limited to 4 shown in FIG. 5.
  • the provision of multiple distance measuring units 13 allows the stylus 10 to effectively collect distances in most usage environments. In this way, the step of the user specifically looking for the mark 42 before each writing can be omitted in order to align the distance measuring unit 13 with the writing pad 20, which further improves the user experience.
  • the stylus pen 10 may also be provided with a gravity sensing unit 50 for sensing the posture of the stylus pen 10, thereby identifying a distance measuring unit 13 located at the lowest position in the vertical direction of the stylus pen 10, and starting the distance measuring unit 13 Working state to collect the distance data of the stylus 10 relative to the writing board 20.
  • the remaining distance measuring units 13 can enter the sleep state, and the power consumption of the entire stylus 10 can be controlled through the work of the gravity sensing unit 50.
  • the gravity sensing unit 50 may use a gyro.
  • FIG. 6 is a schematic diagram of the circuit structure of the circuit board 15.
  • the circuit board 15 includes a power supply 301, a first boost circuit 302, a processor 151 and a second boost circuit 304.
  • the power supply 301 may be a dry battery.
  • the power supply 301 is connected to the first boosting circuit 302, and the first boosting circuit 302 may be a DC-DC amplifier circuit.
  • the first boosting circuit 302 is used to boost the output voltage of the power supply 301 to the first boosting voltage required for the processor 151 to operate normally.
  • the first boost circuit 302 boosts the voltage of the power supply 301 to 2.4V, that is, the first boosted voltage is 2.4V.
  • the first boosting circuit 302 transmits the first boosted voltage to the processor 151 and the second boosting circuit 304, respectively, so that the processor 151 normally operates.
  • the second booster circuit 304 is used to boost the first boosted voltage output by the first booster circuit 302 to a second boosted voltage.
  • the second rising voltage is 5-30V
  • the second boosting circuit 304 may be a Boost boosting circuit.
  • the second step-up circuit 304 forms a second high-voltage pulse signal and transmits it to the tablet 20 via the signal output unit 12.
  • the high-voltage pulse signal may be a square wave signal.
  • the second boost circuit 304 is also electrically connected to the processor 151, and the processor 151 controls the high-voltage pulse signal output by the signal output unit 12 through the control signal sent to the second boost circuit 304.
  • the tablet 20 senses the high-voltage pulse signal, it can learn the writing operation of the stylus 10.
  • the distance measuring unit 13 is also electrically connected to the processor 151. The distance measuring unit 13 is used to detect the distance of the stylus 10 relative to the writing board 20 and send the distance to the processor 151. After receiving and processing the distance, the processor 151 may add the distance value to the control signal and transmit it to the second booster circuit 304 to control the signal output unit 12 to output a high-voltage pulse signal corresponding to the distance value.
  • the processing of the distance value by the processor 151 can be converted into the inclination value of the stylus 10 relative to the writing board 20 by formula (1), and the inclination value is added to the control signal and transmitted to the second boosting circuit 304, so that The signal output unit 12 outputs a high-voltage pulse signal corresponding to the tilt angle to the writing board 20.
  • the circuit board 15 may also be provided with another signal output unit, and the second booster circuit 304 directly sends a high-voltage pulse signal with distance or inclination angle to the terminal device 300 connected to the writing board 20 through the other signal output unit.
  • the terminal device 300 completes the user's handwriting restoration action.
  • the power supply 301 is first turned on, so that the power supply 301 forms a first rising voltage through the first boosting circuit 302 to supply power to the processor 151.
  • the processor 151 starts operating at the first rising voltage.
  • the processor 151 controls the distance measuring unit 13 to perform distance measurement on the writing board 20, and the distance measuring unit 13 detects the distance of the stylus 10 relative to the writing board 20 and sends the distance to the processor 151; and the processor 151 controls signal output
  • the unit 12 outputs a high-voltage pulse signal.
  • the signal output unit 12 receives the second rising voltage boosted by the second boosting circuit 304 and senses with the writing board 20 to transmit the writing track of the user.
  • the processor 151 calculates and outputs a control signal to the second booster circuit 304, and the second booster circuit 304 controls the signal output unit 12 to output a high-voltage pulse signal to the tablet 20.
  • the writing board 20 senses the high-voltage pulse signal, it can learn the distance information or the inclination information of the stylus 10, and then form a more realistic user handwriting and transmit it to the terminal device 300.
  • FIG. 6a is a waveform diagram of high-voltage pulse signal transmission of the stylus pen 10.
  • FIG. The one-cycle high-voltage pulse signal transmission method of the stylus 10 of the present application is as follows: When the stylus 10 is writing, the distance measuring unit 13 detects the distance value of the stylus 10 relative to the writing board 20, and the distance measuring unit 13 sends the distance to the process 151, the processor 151 sends a control signal with a distance to the second booster circuit 304, and the second booster circuit 304 controls the output unit 12 to output a high-voltage pulse signal with a transmission frequency f1 corresponding to the distance to the tablet 20.
  • a pressure sensor 111 is also connected to the tip 11 of the stylus pen 10.
  • the pressure sensor 111 is also electrically connected to the processor 151.
  • the pressure sensor 111 is used to sense the pressure value between the pen tip 11 and the writing board 20 and form a pressure signal.
  • the pressure value can describe parameters such as the user's focus point and the thickness of the handwriting during the writing process, and the simulation of the state of the user's writing is closer to reality.
  • the pressure sensor 111 transmits the pressure to the processor 151. After receiving the pressure, the processor 151 processes it, and controls the output unit 12 to emit high-pressure pulse signals corresponding to the distance transmission frequency f1 and the corresponding pressure transmission frequency f2 to the writing board through the control signal. 20. Specifically, please refer to FIG.
  • the signal output period of the signal output unit 12 of the stylus pen 10 is T0, and the signal output period T0 includes a first time period T1 and a second time period T2, which are processed in the first time period T1
  • the processor 151 transmits a high-voltage pulse signal with a frequency f1 to the writing board 20 through the signal output unit 12; in the second time period T2, the processor 151 transmits a high-voltage pulse signal with a frequency f2 to the writing board 20 through the signal output unit 12.
  • the writing board 20 senses the distance value and pressure value information sensed by the distance measuring unit 13 and the pressure sensor 111 by sensing the frequency and duration of the high-pressure pulse signal sent by the stylus 10, and forms the user's handwriting and transmits it to the terminal Device 300.
  • the terminal device 300 analyzes the software matching the writing board 20 on the terminal device 300 to display the corresponding handwriting on the display screen.
  • the input device 100 includes the stylus 10 and the writing board 20 described above.
  • An embodiment is shown in FIG. 8, the signal output unit 12 also sends the first position signal to the writing board 20 at the same time; the distance measuring unit 13 is also provided with a transmitting module, which is used to send the second position signal to the writing board 20.
  • the writing board 20 can add coordinate information to the first position signal and the second position signal according to the specific position of the two sets of signals received by itself, and then calculate the stylus 10 Current orientation relative to the writing board 20.
  • the orientation of the stylus pen 10 includes an angle ⁇ and a coordinate point.
  • the orientation of the stylus pen 10 relative to the writing pad 20 is always in a changing state.
  • the collection of the orientation information of the stylus 10 by the writing board 20 can be used to correct data such as the writing trajectory or distance value of the stylus 10, so as to further improve the accuracy of the input device 100 of the present application.
  • the processor 151 includes a first position signal for the signal output unit 12 to send position information to the writing board 20 in the control signal transmitted to the second boost circuit 304, and the transmission frequency corresponding to the first position signal is f3 .
  • the processor 151 simultaneously controls the distance measuring unit 13 to send a second position signal to the writing board 20.
  • the writing board 20 determines the orientation of the stylus 10 relative to the writing board 20 according to the received position Information, and transmits the position information to the terminal device 300 after processing.
  • the azimuth signal can monitor and correct the writing trajectory, inclination or pressure. When the high-voltage pulse signal within a certain period of time shows a significant deviation, the azimuth signal can be used to correct the high-voltage pulse signal to avoid a large error in the input device 100 of this application.
  • the writing board 20 may be a separate writing board or may include a display assembly 60.
  • the display assembly 60 enables the writing board 20 to have a display function.
  • the tablet 20 including the display assembly 60 is provided with a display mode and a handwriting input mode.
  • the writing board 20 and the display assembly 60 are arranged separately.
  • the stylus 10 is also provided with a click mode and a handwriting mode. It can be understood that when the writing board 20 is in the display mode, the stylus 10 correspondingly starts the click mode. At this time, the function of the stylus 10 on the writing board 20 is similar to that of a finger or a mouse.
  • the tablet 20 performs a click operation to input.
  • the writing board 20 When the content displayed by the display component 60 requires input such as text or drawing, the writing board 20 automatically switches to the handwriting input mode, at which time the stylus 10 also switches to the handwriting mode, and the stylus 10 starts the distance measuring unit in the handwriting mode 13.
  • the components such as the pressure sensor 111 and the gravity sensing unit 50 can also send the first position signal and the second position signal to the writing board 20 to realize the above-mentioned handwriting input function of the input device 100 of the present application.
  • the writing board 20 may also be as shown in FIG. 11, and the display assembly 60 completely covers the writing board 20, that is, the writing board 20 of the input device 100 of the present application is a touch display screen.
  • the display mode and the input mode of the writing pad 20 by the stylus pen 10 can also be used to switch between whether the input screen is called on the touch screen.
  • the display assembly 60 involved in this application can be applied to, but not limited to, liquid crystal display (Liquid Crystal) (LCD) panels, quantum dot display (Quantum Dot Light Emitting Diodes, QLED) panels, electronic paper (E-paper Display, EPD), Touch screen (Touch panel), flexible solar cell (Page) View (PV) board, radio frequency tag (Radio Frequency Identification, RFID) and other products or components with display function.
  • the terminal device 300 involved in the present application may be any other product and component with a display function, such as a mobile phone, a tablet computer, a display, a liquid crystal panel, an OLED panel, a TV, a smart watch, a VR head-mounted display, a car display.

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  • 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)

Abstract

本申请涉及一种手写笔，用于在书写板上进行手写输入。所述手写笔包括笔身、信号输出单元、测距单元和电路板。当用户手握所述手写笔在所述书写板上进行输入时，所述信号输出单元与所述书写板感应形成书写轨迹，所述测距单元朝向所述书写板测距并形成距离信号。所述电路板中设有处理器，所述处理器通过所述距离感知所述手写笔相对于所述书写板的倾角，进而通过所述信号输出单元将所述距离发送给所述书写板或终端设备。本申请所述手写笔通过所述距离感知倾角，用以模拟用户的书写姿态，可以更真实的还原用户书写笔迹。本申请还涉及包括所述手写笔的输入装置。

Description

手写笔及输入装置 技术领域
本申请涉及人机交互技术领域，尤其涉及一种手写笔，以及含有所述手写笔的输入装置。
背景技术
同键盘、鼠标一样，手写笔在书写板上对终端进行输入的方式，属于人机交互中一种常见的输入设备。这种输入方式对于一些不熟悉拼音的用户，或一些追求笔迹等个性化的用户相对友好，当然采用手写笔在书写板上进行绘画输入的使用场景也较为多见。手写笔属于一种独立于键盘和鼠标之外的输入工具。
随着用户需求的不断提高，当前的手写笔为了让用户获得更接近真实书写的体验，往往需要设置大量的传感器或复杂的控制电路来监控手写笔的姿态、压力、以及高精度定位等数据。这些数据信号相对微弱，相互之间容易形成干扰，或受外界金属、辐射源等物体的影响，造成手写笔的识别障碍，影响用户体验。
发明内容
本申请提供一种结构简单的手写笔，可以还原真实书写体验，本申请手写笔包括如下技术方案：
一种手写笔，用于在书写板上进行输入，包括笔身、信号输出单元、测距单元和电路板，所述笔身包括书写端，所述信号输出单元位于所述书写端，所述测距单元和所述电路板设于所述笔身，所述电路板设有处理器，所述信号输出单元和所述测距单元均与所述处理器电性连接。所述测距单元用于在所述信号输出单元与所述书写板发生感应时，检测所述手写笔相对于所述书写板的距离并产生距离信号发送给所述处理器。所述处理器控制所述信号输出单元向所述书写板或终端设备发送与所述距离相对应的高压脉冲信号。
本申请所述手写笔在所述书写端设有信号输出单元，用户在手握所述手写笔时将所述书写端靠近所述书写板进行书写，所述书写板可感知所述手写笔的书写轨迹。同时，本申请所述手写笔通过设置于所述笔身的测距单元对所述书写板进行测距，从而形了距离信号。所述距离在传入所述处理器后可以通过换算测得所述手写笔相对于所述书写板的倾角，通过距离或倾角可以感知用户的书写姿态。所述处理器将所述距离或所述倾角信传送给所述书写板或终端设备后，可以更真实的模仿用户的书写笔迹，进而提高所述手写笔的用户体验。
本申请还涉及一种输入装置，包括书写板和上述手写笔。本申请输入装置结通过测距单元和信号输出单元即完成了对用户书写笔迹的捕捉，结构简单且不易受外界干扰。
附图说明
图1是本申请一实施例中的输入装置的示意图；
图2是图1的手写笔的局部放大示意图；
图3是图1的输入装置的截面示意图；
图4是本申请另一实施例中手写笔的示意图；
图5是本申请手写笔另一状态的截面示意图；
图6是本申请手写笔一实施例中电路板的电路结构示意图；
图6a是本申请手写笔的高压脉冲信号传递波形图；
图7是本申请手写笔另一实施例的高压脉冲信号传递波形图；
图8是本申请另一实施例中输入装置的示意图；
图9是本申请手写笔另一实施例的高压脉冲信号传递波形图；
图10是本申请一实施例中输入装置的示意图；
图11是本申请另一实施例中的书写板的示意图。
具体实施方式
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部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其它实施例，都属于本申请保护的范围。
请参阅图1，所示为本申请一实施例中的输入装置100，包括手写笔10和书写板20。该手写笔10包括笔身14、信号输出单元12、测距单元13和电路板15。笔身14为杆状，笔身14包括有相对的书写端101和尾端102。书写端101上设有用于与书写板20相接触并在书写板20上进行手写输入操作的笔尖11。书写端101至尾端102之间定义有容纳空间，该容纳空间可以收纳该手写笔10的电路板15等元器件，以实现手写笔10的正常工作。在该实施例中，信号输出单元12和电路板15收容于笔身14的上述容纳空间内。笔尖11外露于笔身14的书写端101。当手写笔10在进行书写时，笔尖11与书写板20接触。如此，用户用手写笔10在书写板20上的书写可以模拟真实的手写环境。笔尖11可由石墨等导电材质制成，避免手写笔10刮伤书写板20。
请参见图6，该手写笔10还包括一设置在电路板15上的处理器151。信号输出单元12与处理器151电连接且受处理器151的控制。当笔尖11与书写板20接触时，处理器151控制信号输出单元12向书写板20输出能被书写板20所识别到的信号。在一实施方式中，当书写板20为电容式书写板时，信号输出单元12向书写板20发送一电容感应信号，该电容感应信号可为高压脉冲信号。在另一实施方式中，当书写板20为电磁屏时，信号输出单元12向电磁式书写板发送一电磁感应信号。在本实施方式中，笔尖11由导电材料制成，该信号输出单元12与笔尖11电性连接，且笔尖11外露于书写端101。如此，信号输出单元12所发送的电容感应信号或电磁感应信号可通过笔尖11传递给书写板20，并使得书写板20与笔尖11相接位置处的电容或电磁发生改变。因此，信号输出单元12发送给书写板20的信号有助于书写板20更加准确地识别到手写笔10书写时笔尖11所在的位置，并进一步识别到手写笔11在书写板20上所进行书写的笔迹。在另一实施方式中，信号输出单元12设置在靠近笔尖11的位置， 例如直接设置在笔尖11上。
测距单元13设置于笔身14的外侧壁上，用于检测用户使用手写笔10在书写板20上进行书写时该测距单元13与书写板20之间的垂直距离。在本实施方式中，该测距单元13设置在笔身14外靠近书写端101的位置处。如此，可避免用户在使用该手写笔10进行书写时遮挡住该测距单元13。在另一实施方式中，该测距单元13设置在笔身14与书写端101交接的位置。参看图2，测距单元13包括有发射端131和接收端132。发射端131和接收端132均与处理器151电连接，当用户使用手写笔10在书写板20上进行手写输入操作时，处理器151控制发射端131向书写板20发出测距信号，并控制接收端132接收经书写板20反射回来后的该测距信号。测距单元13通过发射端131发出测距信号以及接收端132接收到反射回来的测距信号的时间差或其它参数，可以得到手写笔10上的距离感测单元13相对于书写板20的垂直距离D。测距单元13可为红外、激光、超声波等测距单元。
在本实施方式中，当测距单元13固设于笔身14上后，测距单元13到笔尖11之间的轴向距离“L”为固定值。故此，可将该轴向距离L预存于手写笔10内，当测距单元13感测到垂直距离D之后，处理器151通过下述公式(1)，可以计算出手写笔10在进行书写时与书写板20之间的倾斜夹角θ。
θ＝arc sin(D/L)      公式(1)
用户在握持手写笔10在书写板20上书写时，会因为手写笔10与书写板20之间的倾斜夹角θ的变化使笔尖11在书写过程中的着力点改变，进而导致书写笔迹出现粗细差异。因此，通过该倾斜角θ可获知用户在进行书写操作时笔迹粗细的差异。
处理器151可将计算出来的倾斜角度θ发送给书写板20或直接发送给与书写板20相连的终端设备300。在本实施方式中，处理器151可将该倾斜角度θ携带在需发送给书写板20的电容感应信号或电磁感应信号中。在另一实施方式中，手写笔10还包括与处理器151相连的另一信号输出单元，并通过该另一信号输出单元将该倾斜角度θ发送给书写板20或终端设备300，以便书写板20或终端设备300更准确的还原用户的书写笔迹。
请参见图3，在一实施方式中，该手写笔10还包括一用于识别手写笔10书写时笔尖11所受压力值的压力传感器111。该压力传感器111设置在与笔尖11相连的笔芯远离笔尖11的末端上。压力传感器111可以感应手写笔10在书写时笔尖11对于书写板20的压力大小，并生成压力信号。压力传感器111与处理器151电连接，并将所感应到的压力值传输给处理器151。处理器151在接收该压力值后，将压力值同距离值D(或倾角θ)共同发送给书写板20或终端设备300。
在本实施方式中，如图1所示，手写笔10在书写端101包括一锥面112。该锥面112自手写笔10的笔身形状过渡到笔尖11。信号输出单元12设置于锥面112靠近笔尖11的端面上。如此，缩短了信号输出单元12与书写板20的工作距离。具体的，该信号输出单元12为一金属圆环。金属圆环状的信号输出单元12可确保该手写笔10在任意的握持方向和角度下可以输出与书写板20发生 感应的有效的感应信号。
书写板20为电容式书写板时，该信号输出单元12可设置为靠近笔尖11上的一电极，如图1所示，该电极可呈圆环状。在另一实施例中，如图2所示，该信号输出单元12与锥面112的形状相一致。如此，可进一步增加信号输出单元12与书写板20的耦合面积，增强两者之间的信号传输效率。
测距单元13也可以如图3所示，设置在锥面112上。因为锥面112自身相对于书写板20具备一定的初始倾角，可以使得测距单元13在相对竖直的书写状态时，也能够对书写板20进行有效测距。如此，在一定程度上扩大了本申请输入装置100的适用性。
参见图4，手写笔10的外形上包括握持部40，用户在书写时根据该握持部40的提示来握持手写笔10后，可以保证测距单元13正对书写板20。在一实施方式中，握持部40包括粘贴在笔身14上的标记42。该标记42用于告知用户使用手写笔10需握持的地方。在另一实施方式中，请参见图1，握持部40为设置在笔身14上用于收容握持手写笔10手指的凹槽41。用户握笔的手指分别落在凹槽41中后，可以帮助用户矫正握笔的姿势。
请参见图5，在一种实施例中，手写笔10包括多个测距单元13。多个测距单元13与笔尖11的距离均相同，即多个测距单元13设置在手写笔10外侧壁位于同一高度或截面的位置上。在本实施例中，测距单元13的数量为4个，相邻两个测距单元13之间与手写笔10的轴向测距角度大致为90度。可以理解的，测距单元13的数量不限于图5所示的4。设置多个测距单元13可让手写笔10在大部分使用环境下对距离进行有效采集。如此，可省去用户在每次书写前专门寻找标记42的步骤，以便将测距单元13对准书写板20，进一步提升了用户体验。
当测距单元13被设置为多个时，多个测距单元13可能都处于工作状态，处理器151需要筛选有效的距离数据来形成距离信号。这样增加了处理器151的工作负担，也不利于手写笔10的功耗控制。为此手写笔10还可以设置重力感应单元50，用于感应手写笔10的自身姿态，进而识别出位于手写笔10竖直方向最低处的一个测距单元13，并启动该测距单元13进入工作状态来采集手写笔10相对于书写板20的距离数据。相应的，其余测距单元13得以进入休眠状态，通过重力感应单元50的工作可以控制整个手写笔10的功耗。重力感应单元50可以选用陀螺。
图6为电路板15的电路结构示意图。如图6所示，电路板15包括电源301、第一升压电路302、处理器151以及第二升压电路304。电源301可为干电池。电源301连接于第一升压电路302，第一升压电路302可为DC-DC放大电路。第一升压电路302用于将电源301的输出电压升压至处理器151正常工作所需的第一上升电压。在本实施例中，第一升压电路302将电源301的电压提升到2.4V，即第一上升电压为2.4V。第一升压电路302将第一上升电压分别传输给处理器151和第二升压电路304，以便处理器151正常工作。第二升压电路304用于将第一升压电路302输出的第一上升电压上升至第二上升电压。在本实施例中，第二上升电压为5-30V，第二升压电路304可以为Boost升压电路。第二升压电 路304将第二上升电压形成高压脉冲信号并经信号输出单元12发射给书写板20。在本实施方式中，高压脉冲信号可以为方波信号。第二升压电路304还电性连接于处理器151，处理器151通过发送给第二升压电路304的控制信号，来控制信号输出单元12输出的高压脉冲信号。书写板20在感应到高压脉冲信号后，可以获悉手写笔10的书写操作。测距单元13也电性连接于处理器151，测距单元13用于检测手写笔10相对于书写板20的距离并将距离发送给处理器151。处理器151接收距离并进行处理后可以将距离值加入控制信号中传送给第二升压电路304，以控制信号输出单元12输出与距离值相对应的高压脉冲信号。
可以理解的，处理器151对距离值的处理，可以通过公式(1)换算成手写笔10相对于书写板20的倾角值，并将倾角值加入控制信号传送给第二升压电路304，使得信号输出单元12输出与倾角相对应的高压脉冲信号给书写板20。另一方面，电路板15也可以设置另一信号输出单元，第二升压电路304通过另一信号输出单元直接发送带有距离或倾角的高压脉冲信号给与书写板20相连的终端设备300，由终端设备300来完成用户的笔迹还原动作。
当用户使用本申请手写笔10时，先将电源301开启，使电源301通过第一升压电路302形成第一上升电压给处理器151供电。处理器151在第一上升电压下开始工作。具体的，处理器151控制测距单元13对书写板20进行测距，测距单元13检测到手写笔10相对于书写板20的距离后发送距离给处理器151；以及处理器151控制信号输出单元12输出高压脉冲信号，信号输出单元12接收经第二升压电路304升压后的第二上升电压，与书写板20感应以传递用户的书写轨迹。处理器151接收距离后经计算处理输出控制信号给第二升压电路304，第二升压电路304控制信号输出单元12输出高压脉冲信号给书写板20。书写板20感应到高压脉冲信号后可以获知手写笔10的距离信息或倾角信息，进而形成更真实的用户书写笔迹传输给终端设备300。
图6a是手写笔10的高压脉冲信号传递的波形图。本申请手写笔10的一个周期高压脉冲信号传递方式如下：当手写笔10在进行书写时，测距单元13检测手写笔10相对于书写板20的距离值，测距单元13将距离发送给处理器151，处理器151发送带有距离的控制信号给第二升压电路304，第二升压电路304控制输出单元12输出对应距离发射频率为f1的高压脉冲信号给书写板20。
一种实施例，手写笔10的笔尖11处还连接有压力传感器111。压力传感器111同样与处理器151电性连接，压力传感器111用于感应笔尖11与书写板20之间的压力值并形成压力信号。压力值可以描述用户在书写过程中的着力点和笔迹的粗细等参数，对用户书写的状态模拟更接近真实。压力传感器111将压力传输给处理器151，处理器151接收压力后经处理，通过控制信号控制输出单元12发射出分别对应距离发射频率为f1、对应压力发射频率为f2的高压脉冲信号给书写板20。具体的，请参看图7，手写笔10的信号输出单元12信号输出周期为T0，在信号输出周期T0内包括有第一时间段T1和第二时间段T2，在第一时间段T1内处理器151通过信号输出单元12向书写板20发射频率f1的高压脉冲信号；在第二时间段T2处理器151通过信号输出单元12向书写板20发射频率f2的高压脉冲信号。书写板20通过感应手写笔10发出的高压脉冲信 号频率及持续的时间长短，从而获知测距单元13和压力传感器111感应到的距离值信息和压力值信息，并形成用户的书写笔迹传送给终端设备300。终端设备300在接收手写笔的信息后，通过终端设备300上与书写板20匹配的软件解析，以在显示屏上显示对应的书写笔迹。
本申请涉及的输入装置100，包括有上述的手写笔10和书写板20。一种实施例见图8，信号输出单元12还同时向书写板20发送第一位置信号；测距单元13还设有发射模块，用于向书写板20发送第二位置信号。书写板20在接收第一位置信号和第二位置信号后，可以根据自身接收到该两组信号的具体位置，在第一位置信号和第二位置信号中加入坐标信息，进而测算出手写笔10当前相对于书写板20的方位。手写笔10的方位包括角度μ和坐标点，用户在使用手写笔10进行书写时，手写笔10相对于书写板20的方位一直处于变化状态。书写板20对手写笔10方位信息的采集，可用于修正手写笔10的书写轨迹或距离值等数据，进一步提高本申请输入装置100的精确度。
参看图9，处理器151在传给第二升压电路304的控制信号中包含有用于信号输出单元12向书写板20发送位置信息的第一位置信号，第一位置信号对应的发射频率为f3。处理器151同时控制测距单元13向书写板20发送第二位置信号，书写板20在接收到第一位置信号和第二位置信号后，根据接收位置确定手写笔10相对于书写板20的方位信息，并将方位信息进行处理后传递给终端设备300。方位信号可对书写轨迹、倾角或压力进行监测和修正，当个别时段内的高压脉冲信号出现明显偏差时，可以通过方位信号对高压脉冲信号进行修正，避免本申请输入装置100出现较大误差。
参见图10，书写板20可以为单独的书写板，也可以包括显示组件60。显示组件60使得书写板20具备了显示功能。包括显示组件60的书写板20设有显示模式和手写输入模式。在图10的实施例中，书写板20和显示组件60分开排列。此时手写笔10也设有点击模式和手写模式。可以理解的，当书写板20处于显示模式时，手写笔10相应启动点击模式，此时手写笔10在书写板20上的作用类似于手指或者鼠标，仅通过信号输出单元12对显示模式下的书写板20进行点击操作来进行输入。当显示组件60所显示的内容需要文字或绘画等输入时，书写板20自动切换为手写输入模式，此时手写笔10也随之切换为手写模式，手写笔10在手写模式下启动测距单元13、压力传感器111以及重力感应单元50等组件，同时还可以对书写板20发送第一位置信号和第二位置信号，来实现本申请输入装置100上述手写输入功能。
可以理解的，书写板20还可以如图11所示，显示组件60完全覆盖于书写板20上，即本申请输入装置100的书写板20为一个触控显示屏。此时采用手写笔10对于书写板20的显示模式和输入模式，也可以通过触控显示屏是否调用输入框来进行切换。
本申请涉及的显示组件60可以应用于包括但不限于液晶显示(Liquid Crystal Display，LCD)面板、量子点显示(Quantum Dot Light Emitting Diodes，QLED)面板、电子纸(E-paper Display，EPD)、触摸屏(Touch panel)、柔性太阳能电池(Page View，PV)板、射频标签(Radio Frequency Identification， RFID)等具有显示功能的产品或部件。相应的，本申请涉及的终端设备300可以是手机、平板电脑、显示器、液晶面板、OLED面板、电视、智能手表、VR头戴显示器、车载显示器等其它任何具有显示功能的产品和部件。
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。

Claims (18)

  1. 一种手写笔，用于在书写板上进行手写输入，其特征在于，包括笔身、信号输出单元、测距单元和电路板，所述笔身包括书写端，所述信号输出单元设置于所述书写端上，所述测距单元和所述电路板收容于所述笔身内，所述电路板上包括处理器，所述信号输出单元和所述测距单元均与所述处理器电性连接，所述测距单元用于在所述信号输出单元与所述书写板相接触时，检测所述测距单元相对于所述书写板的垂直距离并将所检测到的垂直距离发送给所述处理器，所述处理器控制所述信号输出单元向所述书写板或与所述书写板相连的终端设备发送与所述距离相对应的高压脉冲信号。
  2. 如权利要求1所述的手写笔，其特征在于，所述书写端包括由导电材料制成的笔尖，所述信号输出单元与所述笔尖相连，所述高压脉冲信号通过所述笔尖发送给所述书写板或所述终端设备。
  3. 如权利要求2所述的手写笔，其特征在于，所述手写笔还包括压力传感器，所述压力传感器设置在所述笔尖与所述书写端正对的末端，所述压力传感器与所述处理器电性连接，用于感应所述手写笔在书写时所述笔尖与所述书写板之间的压力。
  4. 如权利要求3所述的手写笔，其特征在于，所述测距单元设置在所述书写端。
  5. 如权利要求3所述的手写笔，其特征在于，所述书写端包括连接所述笔尖和所述笔身的锥面，所述信号输出单元设置在所述锥面上。
  6. 如权利要求5所述手写笔，其特征在于，所述信号输出单元为设置在所述锥面上围绕所述笔尖周围的金属环或线圈。
  7. 如权利要求1所述的手写笔，其特征在于，所述笔身包括供用户握持的握持部，当用户握持所述握持部时，所述测距单元正对所述书写板。
  8. 如权利要求7所述手写笔，其特征在于，所述握持部包括用于矫正用户握笔姿势的多个凹槽。
  9. 如权利要求1所述的手写笔，其特征在于，包括多个所述测距单元，每一所述测距单元与所述笔尖在轴向上的距离相同，且在垂直于所述笔身长度方向的截面上，多个所述测距单元沿周向均布于所述笔身上。
  10. 如权利要求9所述的手写笔，其特征在于，所述手写笔还包括重力感应单元，所述重力感应单元用于感应所述手写笔的姿态，所述处理器根据所述手写笔的姿态控制手写笔处于该姿态下时与所述书写板距离最近的所述测距单元进行测距。
  11. 如权利要求1所述的手写笔，其特征在于，所述电路板包括电源、第一升压电路、处理器和第二升压电路，所述电源通过所述第一升压电路连接于所述处理器，所述信号输出单元通过所述第二升压电路连接于所述处理器及所述第一升压电路，所述信号输出单元和所述测距单元均电连接至所述处理器，所述第一升压电路用于将所述电压的输出电压升压至所述处理器正常工作所需的第一上升电压，所述第一升压电路分别将所述第一上升电压输送给所述处理 器及所述第二升压电路，所述第二升压电路将所述第一上升电压升压至第二上升电压，并将所述第二上升电压形成高压脉冲信号经所述信号输出单元发射出。
  12. 如权利要求11所述的手写笔，其特征在于，所述测距单元检测到所述手写笔相对于所述书写板的距离变化并输送距离给所述处理器，所述处理器接收所述距离经计算后控制所述第二升压电路输出与所述距离相对应的高压脉冲信号。
  13. 如权利要求12所述的手写笔，其特征在于，所述书写端包括笔尖，所述笔尖连接有压力传感器，所述压力传感器与所述处理器电连接，所述压力传感器检测所述手写笔相对于所述书写板的压力并发送给所述处理器，所述处理器接收所述压力后经计算控制所述信号输出单元输出分别与所述距离和所述压力相对应的高压脉冲信号。
  14. 如权利要求13所述的手写笔，其特征在于，所述处理器控制所述第二升压电路输出的高压脉冲式输入信号的发射频率和时间，以使得所述信号输出单元采用分时复用的方式将所述压力和所述距离发送给所述书写板。
  15. 如权利要求11所述的手写笔，其特征在于，所述信号输出单元输出的高压脉冲信号的电压为5-30V。
  16. 如权利要求11所述的手写笔，其特征在于，所述高压脉冲信号为5-30V的方波信号。
  17. 一种输入装置，其特征在于，包括手写板和权利要求1-16任一项所述的手写笔。
  18. 如权利要求17所述的输入装置，其特征在于，所述手写板包括显示组件，所述显示组件设有显示模式和手写输入模式，所述手写笔也设有点击模式和手写模式，所述显示组件处于显示模式时所述手写笔处于所述点击模式，所述显示组件处于所述手写输入模式时所述手写笔处于所述手写模式。
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