CN101334699A - Wireless electronic pen and its handwriting thickness self-adjusting method - Google Patents
Wireless electronic pen and its handwriting thickness self-adjusting method Download PDFInfo
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Abstract
The invention provides a wireless electronic pen, comprising a pen shell, a pen core, an elastic element and a pressure detection component, wherein, the pen core, the elastic element and the pressure detection device are arranged inside the pen shell; furthermore, the pen core pushes against and connected with the pen shell by the elastic element; the wireless electronic pen also comprises a handwriting thickness self-adjusting device which is connected with the pressure detection device by wireless signals; furthermore, the handwriting thickness self-adjusting device is connected with the display of a computer by signals. The wireless electronic pen of the invention has high pressure detection precision and simple and feasible detection method, can automatically adjust the thickness of the handwriting according to the pressure and has strong reality-feeling.
Description
Technical field
The present invention relates to the electronic pen technical field, particularly a kind of wireless electronic pen and handwriting thickness self-adjusting method thereof.
Background technology
Along with the development of digital technology and touch screen technology, the class pen-based input device produces therefrom, and the shortcoming of this type of pen-based input device is: have plenty of wired, wired mode and limited moving freely of pen; Have plenty of the pen that can not change handwriting thickness, promptly do not have the sense of reality according to the size of pressure.The existing electronic pen with pressure sensitivity generally adopts induction, capacitor induction type or resistance induction type, and this type of shortcoming is sensitive inadequately, though pressure sensitivity is arranged, writing is not sufficiently oily.For example, publication number is the technical scheme that the Chinese invention patent " digital pen with tracing path and pressure sensor " of CN1437095A provides two kinds of detected pressures: a kind of is that variation with pressure is converted into variation inductance, when pressure changes, pen core can drive the change that coil on the ferrocart core and ferrocart core produce relative position, thereby cause inductance to change, and then produce an oscillation frequency signal, the signal of oscillation frequency can be judged the size of being exerted pressure after handling by electronic circuit, this technical scheme is quite high to the requirement of coil, coil turn for example, loop density etc., otherwise, the frequency change that obtains in the time of can causing the pressure even variation is inhomogeneous, causes precision not high.Another kind is the variation that the variation of pressure is converted into light intensity, when pressure changes, changes thereby can drive the intensity of illumination that the change of light-path causes receiving, and the variation that detects light intensity can obtain the size of being exerted pressure.This technical scheme is subjected to the influence of surround lighting easily, and because the diversity of light source causes precision not high.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of wireless electronic pen is provided, its pressure detection precision height and detection method are simple, can regulate handwriting thickness, strong sense of reality automatically according to the pressure size.
Another object of the present invention is to provide a kind of handwriting thickness self-adjusting method of wireless electronic pen.
The present invention is achieved through the following technical solutions: this wireless electronic pen, comprise a shell, pen core, flexible member, pressure detecting assembly, described pen core, flexible member, pressure-detecting device all place in the shell, and pen core is by a flexible member and a shell apical grafting, it is characterized in that, described wireless electronic pen also comprises the handwriting thickness self-regulation device, described handwriting thickness self-regulation device is that wireless signal is connected with pressure-detecting device, and described handwriting thickness self-regulation device is connected with the monitor signal of computing machine.
For realizing the present invention better, described pressure-detecting device comprises light source, object lens, CCD, driving pulse module, video signal processing module, wireless transmitter module; Wherein, video signal processing module comprises the sampling hold circuit that is used for serialization and handles, is used for differentiating circuit that the binaryzation square wave handles, MCU that the binaryzation square-wave signal is transformed into the pressure relative changing value gathers the emission control module; Light source, pen core, object lens are connected by light path successively with the light-sensitive array of CCD, and driving pulse module and CCD drive and be connected, and CCD output terminal, sampling hold circuit, differentiating circuit, MCU are gathered the signal connection successively of emission control module, wireless transmitter module;
Described handwriting thickness self-regulation device comprises that the wireless receiving module of signal connection successively, MCU receive control module, handwriting thickness self-regulation module, be connected for wireless signal between wireless receiving module and the described wireless transmitter module, described handwriting thickness adjustment module is arranged in the computing machine, and is connected with the monitor signal of computing machine.
Described object lens are fixed in the scope of the reflection ray that can receive pen core, and CCD is installed in the position of the picture that can receive pen core, and pen core places on the central shaft of a shell.
The inside of described shell is black, and pen core has color than high light line reflection ability for white or other.
A kind of handwriting thickness self-adjusting method of wireless electronic pen may further comprise the steps:
(1) light source shines the pen core in the shell in real time, and its reflection ray is imaged onto on the CCD light-sensitive array through object lens, and CCD obtains the imaging signal, wherein, and the length relation in direct ratio of the length of described imaging and the pen core in a shell;
(2) the driving pulse effect that produces by the driving pulse module, CCD finishes outputting video signal after the photoelectric conversion with the imaging signal that receives;
(3) sampling hold circuit of video signal processing module, differentiating circuit carry out serialization processing and the processing of binaryzation square wave successively with the vision signal of CCD output, obtain the binaryzation square-wave signal of described vision signal, the length relation in direct ratio of described binaryzation square-wave signal width and imaging;
(4) MCU collection emission control module is gathered and is handled described binaryzation square-wave signal, obtains the pressure relative changing value, and MCU gathers emission control module controls wireless transmitter module described pressure relative changing value is sent to wireless receiving module;
(5) MCU receives control module control wireless receiving module and receives described pressure relative changing value, and passes to the handwriting thickness self-regulation module in the computing machine;
(6) described handwriting thickness self-regulation module is according to pressure relative changing value's size, computing draws the pairing handwriting thickness of current pressure and regulates parameter, and pass to the real-time regulated that display carries out handwriting thickness, thereby realize the handwriting thickness self-regulating process of described wireless electronic pen.
The vision signal of the described CCD output of step (3) is the amplitude-modulated pulse signal;
Wherein, step (4) MCU gathers the emission control module and carries out computing according to described binaryzation square-wave signal, obtains the pressure relative changing value, specifically may further comprise the steps:
(4.1) according to the binaryzation square-wave signal the number and the binaryzation square-wave signal width relation in direct ratio of sampling pulse, the calculating sampling pulse number how much be the corresponding binaryzation square-wave signal width that obtains;
(4.2) according to the length of binaryzation square-wave signal width and the relation big or small in direct ratio of pressure, promptly use the size of binaryzation square-wave signal width means pressure, thereby with the size of how much representing pressure of sampling pulse number;
(4.3) difference of corresponding sampling pulse number during with no pressure according to the pairing sampling pulse number of current pressure calculates the pressure relative changing value.
The described handwriting thickness self-regulation of step (6) module is according to pressure relative changing value's size, computing draws handwriting thickness and regulates parameter, specifically may further comprise the steps: pairing when preestablishing no pressure is the person's handwriting of a standard thickness, the adjusting parameter of its handwriting thickness is 1, then the pressure relative changing value be multiply by 1, regulate parameter thereby obtain the pairing handwriting thickness of current pressure.
Its principle is specially: when pen core is under pressure, flexible member generation elastic deformation, thereby cause the pen core length in a shell to change, be that the light signal that CCD receives also changes, the cycle of the vision signal of CCD output at this moment also just changes, then the vision signal of CCD output is input to corresponding electronic circuit and handles (being that serialization processing and binaryzation square wave are handled), and the number of calculating sampling pulse draws binaryzation square-wave signal width, because its cycle and pressure size are proportional, so can obtain the pressure relative changing value by the variation that detects its cycle, at last according to pressure relative changing value computing, thus the thickness of regulating person's handwriting.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention adopts CCD as photo-electric conversion element, and the performance by its ISO makes the accuracy of detection of pressure improve greatly.
2, the length of suffered pressure of pen core and pen core imaging is proportional, the length of pen core imaging is proportional with the cycle of the vision signal of CCD output again, thereby the size of the cycle reaction pressure of vision signal that can be by detecting CCD output, simple, the easily row, and accuracy of detection height of this detection method.
3, can regulate handwriting thickness, strong sense of reality automatically according to the pressure size.
Description of drawings
Fig. 1 is the structural principle block scheme of a kind of wireless electronic pen of the present invention;
Fig. 2 is the structural representation of the opticator of a kind of wireless electronic pen of the present invention;
Signal Processing synoptic diagram when Fig. 3 is a kind of wireless electronic pen detected pressures of the present invention:
Wherein, Fig. 3 A is the video output signals synoptic diagram of CCD;
Fig. 3 B is a binary signal synoptic diagram after treatment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, 2, this wireless electronic pen, comprise a shell 1, pen core 7, flexible member 2, pressure detecting assembly, described pen core 7, flexible member 2, pressure-detecting device all place in the shell, and pen core 7 is characterized in that by flexible member 2 and a shell 1 apical grafting described wireless electronic pen also comprises the handwriting thickness self-regulation device, described handwriting thickness self-regulation device is that wireless signal is connected with pressure-detecting device, and described handwriting thickness self-regulation device is connected with the monitor signal of computing machine.
Described pressure-detecting device comprises light source 3, object lens 4, CCD5, driving pulse module, video signal processing module, wireless transmitter module; Wherein, video signal processing module comprises the sampling hold circuit that is used for serialization and handles, is used for differentiating circuit that the binaryzation square wave handles, MCU that the binaryzation square-wave signal is transformed into force value gathers the emission control module; Light source 3, pen core 7, object lens 4 are connected by light path successively with the light-sensitive array of CCD5, driving pulse module and CCD5 drive and are connected, and CCD5 output terminal, sampling hold circuit, differentiating circuit, MCU are gathered the signal connection successively of emission control module, wireless transmitter module;
Described handwriting thickness self-regulation device comprises that the wireless receiving module of signal connection successively, MCU receive control module, handwriting thickness self-regulation module, be connected for wireless signal between wireless receiving module and the described wireless transmitter module, described handwriting thickness adjustment module is arranged in the computing machine, and is connected with the monitor signal of computing machine.
Described object lens 4 are fixed in the scope of the reflection ray that can receive pen core 7, and CCD5 is installed in the position of the picture that can receive pen core 7, and pen core 7 places on the central shaft of a shell 1.
The inside of described shell 1 is black, and pen core 7 has color than high light line reflection ability for white or other.
This wireless electronic pen is to realize the handwriting thickness self-regulating process like this:
(1) light source shines the pen core 7 in the shell 1 in real time, and its reflection ray is imaged onto on the CCD5 light-sensitive array through object lens 4, and CCD5 obtains light signal.When the pressure that is applied to pen core 7 changed, elastic deformation can take place in flexible member 2, causes the length of the pen core 7 in a shell 1 to change, the relation big or small in direct ratio of pen core 7 and pressure; During light source 3 irradiation pen cores 7, the reflection ray of generation is through object lens 4 imaging on the CCD5 light-sensitive array, and the length of pen core 7 changes in the shell 1, causes that its reflecting surface length changes, the length relation in direct ratio of the length of imaging and the pen core 7 in a shell 1;
(2) CCD5 receives pen core 7 through object lens 4 imagings, and finishes opto-electronic conversion and outputting video signal under the driving pulse effect of driving pulse module, and the vision signal of CCD5 output is the amplitude-modulated pulse signal, as shown in Figure 3A;
(3) the amplitude-modulated pulse signal of CCD5 output becomes continuous vision signal behind the sampling hold circuit of video signal processing module, do the processing of binaryzation square wave through differentiating circuit then and obtain the binaryzation square-wave signal, shown in Fig. 3 B, the length relation in direct ratio of this binaryzation square-wave signal width and imaging;
(4) MCU collection emission control module is carried out computing to described binaryzation square-wave signal, obtains the pressure relative changing value, specifically may further comprise the steps:
(4.1) according to the number and the binaryzation square-wave signal width relation in direct ratio of the sampling pulse of binaryzation square-wave signal, the calculating sampling pulse number how much be the corresponding binaryzation square-wave signal width that obtains;
(4.2) according to the relation big or small in direct ratio of binaryzation square-wave signal width and pressure, promptly use the size of binaryzation square-wave signal width means pressure, thereby with the size of how much representing pressure of sampling pulse number;
(4.3) difference of corresponding sampling pulse number during with no pressure according to the pairing sampling pulse number of current pressure calculates the pressure relative changing value;
MCU gathers emission control module controls wireless transmitter module described pressure relative changing value is sent to wireless receiving module;
(5) MCU receives control module control wireless receiving module and receives described pressure relative changing value, and passes to the handwriting thickness self-regulation module in the computing machine;
(6) described handwriting thickness self-regulation module is according to pressure relative changing value's size, computing draws the pairing handwriting thickness of current pressure and regulates parameter, specifically may further comprise the steps: pairing when preestablishing no pressure is the person's handwriting of a standard thickness, the adjusting parameter of its handwriting thickness is 1, then the pressure relative changing value be multiply by 1, regulate parameter thereby obtain the pairing handwriting thickness of current pressure;
Described handwriting thickness self-regulation module is regulated parameter with handwriting thickness and is passed to the real-time regulated that display carries out handwriting thickness, thereby realizes the handwriting thickness self-regulating process of described wireless electronic pen.
As mentioned above, just can realize the present invention preferably, the foregoing description is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.
Claims (8)
1, a kind of wireless electronic pen, comprise a shell, pen core, flexible member, pressure detecting assembly, described pen core, flexible member, pressure-detecting device all place in the shell, and pen core is by a flexible member and a shell apical grafting, it is characterized in that: described wireless electronic pen also comprises the handwriting thickness self-regulation device, described handwriting thickness self-regulation device is that wireless signal is connected with pressure-detecting device, and described handwriting thickness self-regulation device is connected with the monitor signal of computing machine.
2, according to the described a kind of wireless electronic pen of claim 1, it is characterized in that: described pressure-detecting device comprises light source, object lens, CCD, driving pulse module, video signal processing module, wireless transmitter module; Wherein, video signal processing module comprises the sampling hold circuit that is used for serialization and handles, is used for differentiating circuit that the binaryzation square wave handles, MCU that the binaryzation square-wave signal is transformed into force value gathers the emission control module; Light source, pen core, object lens are connected by light path successively with the light-sensitive array of CCD, and driving pulse module and CCD drive and be connected, and CCD output terminal, sampling hold circuit, differentiating circuit, MCU are gathered the signal connection successively of emission control module, wireless transmitter module;
Described handwriting thickness self-regulation device comprises that the wireless receiving module of signal connection successively, MCU receive control module, handwriting thickness self-regulation module, be connected for wireless signal between wireless receiving module and the described wireless transmitter module, described handwriting thickness adjustment module is arranged in the computing machine, and is connected with the monitor signal of computing machine.
3, according to the described a kind of wireless electronic pen of claim 1, it is characterized in that: pen core places on the central shaft of a shell.
4, according to the described a kind of wireless electronic pen of claim 1, it is characterized in that: the inside of described shell is black, and pen core is white or the color with strong light reflection potential.
5, adopt the handwriting thickness self-adjusting method of each described wireless electronic pen of claim 1～3, it is characterized in that may further comprise the steps:
(1) light source shines the pen core in the shell in real time, and its reflection ray is imaged onto on the CCD light-sensitive array through object lens, and CCD obtains the imaging signal, wherein, and the length relation in direct ratio of the length of described imaging and the pen core in a shell;
(2) the driving pulse effect that produces by the driving pulse module, CCD finishes outputting video signal after the photoelectric conversion with the imaging signal that receives;
(3) sampling hold circuit of video signal processing module, differentiating circuit carry out serialization processing and the processing of binaryzation square wave successively with the vision signal of CCD output, obtain the binaryzation square-wave signal of described vision signal, the length relation in direct ratio of described binaryzation square-wave signal width and imaging;
(4) MCU collection emission control module is carried out computing to described binaryzation square-wave signal, obtains the pressure relative changing value, and MCU gathers emission control module controls wireless transmitter module described pressure relative changing value is sent to wireless receiving module;
(5) MCU receives control module control wireless receiving module and receives described pressure relative changing value, and passes to the handwriting thickness self-regulation module in the computing machine;
(6) described handwriting thickness self-regulation module is according to pressure relative changing value's size, computing draws the pairing handwriting thickness of current pressure and regulates parameter, and pass to the real-time regulated that display carries out handwriting thickness, thereby realize the handwriting thickness self-regulating process of described wireless electronic pen.
6, the handwriting thickness self-adjusting method of wireless electronic pen according to claim 5 is characterized in that: the vision signal of the described CCD output of step (3) is the amplitude-modulated pulse signal.
7, the handwriting thickness self-adjusting method of wireless electronic pen according to claim 5, it is characterized in that: step (4) MCU gathers the emission control module and carries out computing according to described binaryzation square-wave signal, obtain the pressure relative changing value, specifically may further comprise the steps:
(4.1) according to the binaryzation square-wave signal the number and the binaryzation square-wave signal width relation in direct ratio of sampling pulse, the calculating sampling pulse number how much be the corresponding binaryzation square-wave signal width that obtains;
(4.2) according to the length of binaryzation square-wave signal width and the relation big or small in direct ratio of pressure, promptly use the size of binaryzation square-wave signal width means pressure, thereby with the size of how much representing pressure of sampling pulse number;
(4.3) difference of corresponding sampling pulse number during with no pressure according to the pairing sampling pulse number of current pressure calculates the pressure relative changing value.
8, the handwriting thickness self-adjusting method of wireless electronic pen according to claim 5, it is characterized in that: the described handwriting thickness self-regulation of step (6) module is according to pressure relative changing value's size, computing draws handwriting thickness and regulates parameter, specifically may further comprise the steps: pairing when preestablishing no pressure is the person's handwriting of a standard thickness, the adjusting parameter of its handwriting thickness is 1, then the pressure relative changing value be multiply by 1, regulate parameter thereby obtain the pairing handwriting thickness of current pressure.
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| CN102122216A (en) * | 2010-01-08 | 2011-07-13 | 剑扬股份有限公司 | Stylus and touch input system |
| CN102591481A (en) * | 2011-01-13 | 2012-07-18 | 国立成功大学 | Digital drawing electronic pen, digital drawing system and using method thereof |
| CN103729074A (en) * | 2013-12-26 | 2014-04-16 | 三星电子（中国）研发中心 | Device, system and method for recognizing handwritings |
| CN104345917A (en) * | 2013-08-09 | 2015-02-11 | 联想(北京)有限公司 | Information processing method and electronic pen |
| CN104423647A (en) * | 2013-09-10 | 2015-03-18 | 矽统科技股份有限公司 | Touch input device and system |
| CN106095174A (en) * | 2016-06-12 | 2016-11-09 | 苏州芯沃科电子科技有限公司 | Electronic whiteboard actively pen and touch input system and driving method |
| CN106201314A (en) * | 2016-06-30 | 2016-12-07 | 成都东方闻道科技发展有限公司 | A kind of display packing realizing handwriting input on touch screen and display device |
| CN106527947A (en) * | 2016-11-11 | 2017-03-22 | 广东小天才科技有限公司 | Touch pen-based drawing method, drawing system and related equipment |
| CN111459306A (en) * | 2020-03-12 | 2020-07-28 | 维沃移动通信有限公司 | Information display method, information sending method, electronic pen and electronic equipment |
| WO2022206785A1 (en) * | 2021-03-30 | 2022-10-06 | 华为技术有限公司 | Method and apparatus for intelligent switching of stylus type, device, and storage medium |
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| CN1437095A (en) * | 2002-02-07 | 2003-08-20 | 天瀚科技股份有限公司 | Digital pen with tracking and pressure sensing |
| CN2622763Y (en) * | 2003-05-16 | 2004-06-30 | 无敌科技(西安)有限公司 | Thin-thick regulatable touch-controlled pen of palm electronic device |
| CN201229551Y (en) * | 2008-08-01 | 2009-04-29 | 广东威创视讯科技股份有限公司 | Wireless electronic pen |
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| CN102591481A (en) * | 2011-01-13 | 2012-07-18 | 国立成功大学 | Digital drawing electronic pen, digital drawing system and using method thereof |
| CN104345917A (en) * | 2013-08-09 | 2015-02-11 | 联想(北京)有限公司 | Information processing method and electronic pen |
| CN104423647B (en) * | 2013-09-10 | 2017-08-11 | 矽统科技股份有限公司 | Touch input device and system |
| CN104423647A (en) * | 2013-09-10 | 2015-03-18 | 矽统科技股份有限公司 | Touch input device and system |
| CN103729074B (en) * | 2013-12-26 | 2016-08-31 | 三星电子（中国）研发中心 | A kind of identify the device of person's handwriting, system and method |
| CN103729074A (en) * | 2013-12-26 | 2014-04-16 | 三星电子（中国）研发中心 | Device, system and method for recognizing handwritings |
| CN106095174A (en) * | 2016-06-12 | 2016-11-09 | 苏州芯沃科电子科技有限公司 | Electronic whiteboard actively pen and touch input system and driving method |
| CN106201314A (en) * | 2016-06-30 | 2016-12-07 | 成都东方闻道科技发展有限公司 | A kind of display packing realizing handwriting input on touch screen and display device |
| CN106201314B (en) * | 2016-06-30 | 2019-03-19 | 成都东方闻道科技发展有限公司 | A display method and display device for realizing handwriting input on a touch screen |
| CN106527947A (en) * | 2016-11-11 | 2017-03-22 | 广东小天才科技有限公司 | Touch pen-based drawing method, drawing system and related equipment |
| CN111459306A (en) * | 2020-03-12 | 2020-07-28 | 维沃移动通信有限公司 | Information display method, information sending method, electronic pen and electronic equipment |
| CN111459306B (en) * | 2020-03-12 | 2023-09-26 | 维沃移动通信有限公司 | Information display method, information transmission method, electronic pen and electronic equipment |
| WO2022206785A1 (en) * | 2021-03-30 | 2022-10-06 | 华为技术有限公司 | Method and apparatus for intelligent switching of stylus type, device, and storage medium |
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Effective date of registration: 20200812 Address after: Room 301, 215 qiaozhong Road, Liwan District, Guangzhou City, Guangdong Province 510163 Patentee after: ONYX INTERNATIONAL Inc. Address before: 510670 Guangdong Province, Guangzhou high tech Industrial Development Zone Kezhu Road No. 233 Patentee before: VTRON GROUP Co.,Ltd. |