CN102799286A - Input method and device for handwriting pen - Google Patents
Input method and device for handwriting pen Download PDFInfo
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- CN102799286A CN102799286A CN2012102147035A CN201210214703A CN102799286A CN 102799286 A CN102799286 A CN 102799286A CN 2012102147035 A CN2012102147035 A CN 2012102147035A CN 201210214703 A CN201210214703 A CN 201210214703A CN 102799286 A CN102799286 A CN 102799286A
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Abstract
The invention is applied in the field of handwriting input, and provides an input method and an input device for a handwriting pen. The method comprises the following steps of: establishing communication connection with a terminal; writing on any object enabling a pressure sensing device of a nib to acquire pressure to generate signals, and sending the signals to the terminal so that the terminal can process the signals, wherein the signals consist of a gyroscope displacement signal generated by a gyroscope positioned in the handwriting pen and a pressure signal generated by the pressure device positioned on the nib of the handwriting pen. According to embodiments, the handwriting pen is used for writing on any object enabling the nib pressure device to generate pressure, the signals generated by writing are transmitted to the terminal through a network, and the terminal can process the displacement signal of the gyroscope in the handwriting pen and the pressure signal of the nib pressure device, so that the handwriting pen is not limited by the size of a terminal screen or total sensing points of a touch screen and accords with human normal stroke writing habit.
Description
Technical field
The invention belongs to the handwriting input field, relate in particular to the input method and the device of writing pencil.
Background technology
But along with constantly popularizing of interactive devices such as computer; Input characters becomes the problem of people's research better, faster; Handwriting input is people's input characters and daily hand-written input modes of a kind of simulating human of working out efficiently for ease; Its anthropomorphic dummy's handwriting tracks, through identification software identification people's handwriting tracks, and then input characters.
But there is following problem in existing handwriting input:
The hand-writing technique of resistance screen use very ripe, but along with being eliminated gradually of resistance screen, based on fade out gradually people's the eye of looking of the hand-writing technique of resistance screen pressure sensitive.
2. the capacitance plate hand-writing technique begins to rise, but it is following to be based on the handwriting input shortcoming of finger or the special-purpose writing pencil of capacitance plate:
● because the too little or total induction point limited amount of touch-screen of touch-screen, and finger or electric capacity writing pencil nib are too big, always can exist middle some stroke of literal to lose when causing input characters, and then literal input failure, user experience influenced.
● because the handset touch panel size receives portable restriction can not do very greatly; Hand-written process mobile phone sum can use whole screen; When finger touch in the writing process arrives already present literal, cause the mobile phone mistake cursor to be moved to the touch place, literal input sequence mistake through regular meeting.
● can receive finger to cause touching malfunctioning situation when state (on like band gloves, finger water droplet being arranged) constantly based on the literal input of finger.Finger input always uses that certain finger touches and the word that writes with a pen truly exists than big-difference.
● current most of capacitance touch pen nib is bigger, can't the analog signature pen and pen etc. normally write feel.
● often in order to represent the current sense state of mobile phone touch screen, always can the current stroke of sensing be presented on the screen at once, and literal is bigger in the capacitance plate writing process, has hidden mobile phone, influence user experience originally just in content displayed.
● along with the screen of device end (mobile phone, panel computer, PC) is increasing; When using, the user often can't keep flat on the table; But utilize as things such as support such as the notebook computer screen positively biased standing up to put; Utilize this moment the handwriting input mode of touch-screen to cause arm to be ached when long, have a strong impact on user experience because the user has to lift the arm arm to go to touch.
● electric capacity writing pencil cost is lower, no longer belongs to high-tech product, is unfavorable for that manufacturer makes profit out of it.
Writing board for computer greatly then occupies, and little then influence input is experienced.And must handwriting pad and handwriting pad be used.Receiving volume, portable restriction to be applied to the mobile phone input upward is worth not high.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of input method, device and writing pencil of writing pencil, is intended to solve prior art and receives terminal touch-screen size and terminal to write inconvenient problem.
The embodiment of the invention is achieved in that a kind of input method of writing pencil, said method comprising the steps of:
Establish a communications link with the terminal;
Write to produce signal at any enterprising running hand of object of the pressure sensitive device acquisition pressure of nib that makes; Send said signal to the terminal; So that handle said signal at the terminal, said signal is made up of the gyroscope that is arranged in writing pencil gyroscope displacement signal that produces and the pressure signal that the pressure apparatus that is positioned at the writing pencil nib produces.
Another purpose of the embodiment of the invention is to provide a kind of input media of writing pencil, and said device comprises:
Communication connects sets up the unit, is used for establishing a communications link with the terminal;
The signal generation unit; Be used for writing the generation signal according to what writing pencil obtained at any pressure sensitive device that makes nib to carry out on the object of pressure, said signal is made up of the gyroscope that is arranged in writing pencil gyroscope displacement signal that produces and the pressure signal that is positioned at the pressure apparatus of writing pencil nib;
Signal transmitting unit, the signal that is used for that said signal generation unit is produced connects through communication sets up the communication connection of setting up the unit, sends to the terminal, so that handle said signal at the terminal.
The embodiment of the invention; Writing pencil is write at any enterprising running hand of object that makes the pen point pressure device produce pressure; Through network the said signal of writing generation is sent to the terminal; So that handle the pressure signal of gyrostatic displacement signal in the writing pencil and pen point pressure device at the terminal, make writing pencil no longer receive terminal screen size and touch-screen always to respond to the restriction of counting, and according to the normal stroke writing style of people.
Description of drawings
Fig. 1 is the process flow diagram of the writing pencil input method that provides of the embodiment of the invention;
Fig. 2 is the process flow diagram of present disclosure writing of Chinese characters;
Fig. 3 is the process flow diagram of the writing pencil input method that provides of further embodiment of this invention;
Fig. 4 is the structural drawing of the writing pencil input media that provides of the embodiment of the invention;
Fig. 5 is the structural drawing of the terminal receiving trap that provides of further embodiment of this invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention; Writing pencil is write at any enterprising running hand of object that makes the pen point pressure device produce pressure; Through network the said signal of writing generation is sent to the terminal; So that handle the pressure signal of gyrostatic displacement signal in the writing pencil and pen point pressure device at the terminal, make writing pencil no longer receive terminal screen size and touch-screen always to respond to the restriction of counting, and according to the normal stroke writing style of people.
Embodiment one
Be illustrated in figure 1 as the process flow diagram of the writing pencil input method that the embodiment of the invention provides, said method comprising the steps of:
In step S101, establish a communications link with the terminal.
In embodiments of the present invention; Writing pencil is after startup; Establish a communications link through network technology and terminal; Generally establish a communications link for portable terminal (like mobile phone, panel computer etc.), and for fixing terminal (like household PC etc.), adopt the cable network technology to establish a communications link through radio network techniques such as bluetooth or 2.4Ghz radio frequencies.
In step S102; Write to produce signal at any enterprising running hand of object of the pressure sensitive device acquisition pressure of nib that makes; Send said signal to the terminal; So that handle said signal at the terminal, said signal is made up of the gyroscope that is arranged in writing pencil gyroscope displacement signal that produces and the pressure signal that the pressure apparatus that is positioned at the writing pencil nib produces.
In embodiments of the present invention, writing pencil is write at any enterprising running hand of object (like book, desktop etc.) of the pressure sensitive device acquisition pressure of nib that can make after establishing a communications link with the terminal.In writing process, writing pencil produces two kinds of signals, comprising: useful signal and invalid signals, and the stroke track that writing pencil identification significance bit shifting signal is write single literal with generation, identification invalid bit shifting signal is to distinguish two literal.Writing pencil sends to the terminal with said displacement signal, so that the terminal handles said displacement signal, and shows treated displacement signal.
The significance bit shifting signal is the signal that writing pencil produces when writing single literal, and the significance bit shifting signal is divided into again: pressure significance bit shifting signal and gyroscope significance bit shifting signal.The signal that comprises pressure signal and gyroscope displacement signal is a pressure significance bit shifting signal, and what this pressure significance bit shifting signal was corresponding is the displacement of the stroke in the single literal; Only comprising gyroscope displacement signal and the signal between two pressure significance bit shifting signals is gyroscope significance bit shifting signal, and what this gyroscope significance bit shifting signal was corresponding is the displacement between two strokes of single literal.Writing pencil passes through the track that the effective displacement letter of pressure produces the stroke of single literal in writing process, produce the track of the displacement between two continuous strokes through gyroscope significance bit shifting signal, thereby form the track of a complete literal.
Invalid signals is the signal that writing pencil produces in the gap of writing two literal, and invalid signals only comprises the gyroscope displacement signal.For the identification of invalid signals, can distinguish from room and time.On the space: the space threshold values of signalization, when the signal that receives only comprises the gyroscope displacement signal, and said gyroscope displacement signal is during greater than said space threshold values, and said signal is set to invalid signals; On time: the time threshold values of signalization, when the gap that receives two signals greater than said time during threshold values, after the signal received be set to invalid signals.
The present invention will be described to lift a specific example now:
Be illustrated in figure 2 as the present disclosure writing of Chinese characters " in " and the process flow diagram of " thousand ", the displacement signal among the present invention is divided into: pressure significance bit shifting signal, gyroscope significance bit shifting signal and invalid signals.Step 1,2,3 corresponding among Fig. 2 is pressure significance bit shifting signal, and step 1.5,2.5 is a gyroscope significance bit shifting signal, and step 4 is an invalid signals.
Writing Chinese characters " in ":
Step 1: writing pencil is write at the object that any pressure sensitive device that can make nib produces pressure, and at this moment the pressure sensitive device produces pressure signal and produces the gyroscope displacement signal with gyroscope, i.e. pressure significance bit shifting signal, the generation of correspondence stroke 1;
Step 1.5: writing pencil is between writing stroke 1 and stroke 2 time, and nib is unsettled to be moved simultaneously, at this moment has only gyroscope to produce the gyroscope displacement signal, i.e. gyroscope significance bit shifting signal, corresponding generation stroke 1.5;
Step 2: identical with step 1;
Step 2.5: identical with step 1.5;
Step 3: identical with step 1.
Step 4: writing pencil is when writing between two Chinese characters; Nib is unsettled to be moved simultaneously; At this moment have only gyroscope to produce the gyroscope displacement signal; But the displacement of the gyroscope displacement signal that at this moment produces with pass the threshold values of time back much larger than user's setting, so this displacement signal is identified as invalid signals.
Passable by above step, the signal that step 1,2,3 produces finally forms stroke; The signal that step 1.5, step 2.5 produce forms the track between stroke, is used to distinguish two strokes, so that stroke forms literal; And the signal that step 4 produces forms the track between two Chinese characters, is used to distinguish two Chinese characters.
As an optional embodiment of the present invention, said method is further comprising the steps of:
According to the enlargement factor of the configuration signalization at user's writing style and/or terminal, so that said signal is better handled at the terminal.
The embodiment of the invention; Writing pencil is write at any enterprising running hand of object that makes the pen point pressure device produce pressure; Through network the said signal of writing generation is sent to the terminal; So that handle the pressure signal of gyrostatic displacement signal in the writing pencil and pen point pressure device at the terminal, make writing pencil no longer receive terminal screen size and touch-screen always to respond to the restriction of counting, and according to the normal stroke writing style of people.
Embodiment two
Be illustrated in figure 3 as the process flow diagram of the writing pencil input method that second embodiment of the invention provides, said method comprising the steps of:
In step S301, establish a communications link with writing pencil.
In embodiments of the present invention; The terminal is after startup; Establish a communications link through network technology and writing pencil; Generally establish a communications link for portable terminal (like mobile phone, panel computer etc.), and for fixing terminal (like household PC etc.), adopt the cable network technology to establish a communications link through radio network techniques such as bluetooth or 2.4Ghz radio frequencies.
In step S302; Receive the signal that writing pencil receives and sends through said communication link; To be writing pencil write the signal of generation through the enterprising running hand of object that obtains pressure at the pressure sensitive device that can make nib to said signal, and said signal is made up of the gyroscope that is arranged in writing pencil displacement signal that produces and the pressure signal that the pressure apparatus that is positioned at the writing pencil nib produces.
In step S303, said signal to be handled, and shown treated signal, said signal is handled comprises: different types of signal is carried out different labeled, perhaps said signal is identified as literal.
In embodiments of the present invention, handle said signal behind the signal that receives the writing pencil transmission at the terminal, comprising: different types of signal is carried out different labeled, perhaps said signal is identified as literal.The said step that signal is identified as literal is specially:
Obtain the signal acquisition time threshold values that writing pencil is provided with.This time is used to be provided with the time threshold values that the terminal obtains signal, when the terminal when not receiving signal greater than the time of this threshold values, then assert the signal EOI of single literal.
Receive the signal that writing pencil sends.
Judge according to said time threshold values whether single letter signal reception finishes.
When judging that single letter signal receives end, the signal that receives is identified as literal.
The embodiment of the invention; The terminal obtains the signal that writing pencil sends, and said signal is handled, and different types of signal is carried out different labeled or signal is identified as literal; Make the terminal obtain the signal that writing pencil obtains according to human writing style, and said signal is shown.
Embodiment three
Be illustrated in figure 4 as the structural drawing of the writing pencil input media that the embodiment of the invention provides,, the part relevant with the embodiment of the invention only be shown, comprising for the ease of explanation:
Communication connects sets up unit 41, is used for establishing a communications link with the terminal.
In embodiments of the present invention; Writing pencil is after startup; The communication connection is set up unit 41 and is established a communications link through network technology and terminal; Generally establish a communications link for portable terminal (like mobile phone, panel computer etc.), and for fixing terminal (like household PC etc.), adopt the cable network technology to establish a communications link through radio network techniques such as bluetooth or 2.4Ghz radio frequencies.
In embodiments of the present invention, writing pencil is write at any enterprising running hand of object (like book, desktop etc.) of the pressure sensitive device acquisition pressure of nib that can make after establishing a communications link with the terminal.Signal generation unit 42 is write the generation signal according to writing pencil.Said signal comprises: significance bit shifting signal and invalid bit shifting signal.
The significance bit shifting signal is the signal that writing pencil produces when writing single literal, and the significance bit shifting signal is divided into again: pressure significance bit shifting signal and gyroscope significance bit shifting signal.The signal that comprises pressure signal and gyroscope displacement signal is a pressure significance bit shifting signal, and what this pressure significance bit shifting signal was corresponding is the displacement of the stroke in the single literal; Only comprising gyroscope displacement signal and the signal between two pressure significance bit shifting signals is gyroscope significance bit shifting signal, and what this gyroscope significance bit shifting signal was corresponding is the displacement between two strokes of single literal.Writing pencil passes through the track that the effective displacement letter of pressure produces the stroke of single literal in writing process, produce the track of the displacement between two continuous strokes through gyroscope significance bit shifting signal, thereby form the track of a complete literal.
Invalid signals is the signal that writing pencil produces in the gap of writing two literal, and invalid signals only comprises the gyroscope displacement signal.For the identification of invalid signals, can distinguish from room and time.On the space: the space threshold values of displacement signal is set, and when the displacement signal that receives only comprises gyrostatic displacement signal, and said gyrostatic displacement signal is during greater than said space threshold values, and said signal is set to invalid signals; On time: the time threshold values of displacement signal is set, when the gap that receives two displacement signals greater than said time during threshold values, after the displacement signal received be set to invalid signals.
Signal transmitting unit 43, the signal that is used for that said signal generation unit 42 is produced connects through communication sets up the communication connection of setting up unit 41, sends to the terminal, so that handle said signal at the terminal.
In embodiments of the present invention, signal transmitting unit 43 sends to the terminal with said displacement signal, so that the terminal handles said displacement signal, and shows treated displacement signal.
As an optional embodiment of the present invention, said device also comprises:
The embodiment of the invention; Writing pencil is write at any enterprising running hand of object that makes the pen point pressure device produce pressure; Through network the said signal of writing generation is sent to the terminal; So that handle the pressure signal of gyrostatic displacement signal in the writing pencil and pen point pressure device at the terminal, make writing pencil no longer receive terminal screen size and touch-screen always to respond to the restriction of counting, and according to the normal stroke writing style of people.
Embodiment four
Be illustrated in figure 4 as the structural drawing of the terminal receiving trap that further embodiment of this invention provides,, the part relevant with the embodiment of the invention only be shown, comprising for the ease of explanation:
Communication connects sets up unit 51, is used for establishing a communications link with writing pencil.
Gather in the embodiment of the invention; The terminal is after startup; The communication connection is set up unit 51 and is established a communications link through network technology and writing pencil; Generally establish a communications link for portable terminal (like mobile phone, panel computer etc.), and for fixing terminal (like household PC etc.), adopt the cable network technology to establish a communications link through radio network techniques such as bluetooth or 2.4Ghz radio frequencies.
Signal receiving unit 52; Being used to receive writing pencil connects through said communication and sets up the signal that the communication link set up unit 51 receives and sends; To be writing pencil write the signal of generation through the enterprising running hand of object that obtains pressure at the pressure sensitive device that can make nib to said signal, and said signal is made up of the gyroscope that is arranged in writing pencil displacement signal that produces and the pressure signal that the pressure apparatus that is positioned at the writing pencil nib produces.
Signal processing unit 53 is used for the signal that said signal receiving unit 52 receives is handled, and shows treated signal, and said signal is handled comprises: different types of signal is carried out different labeled, perhaps said signal is identified as literal.
In embodiments of the present invention, the terminal is behind the signal that receives the writing pencil transmission, and 53 pairs of said signals of signal processing unit are handled, and comprising: different types of signal is carried out different labeled, perhaps said signal is identified as literal.
Said signal processing unit 53 specifically comprises:
Time threshold values acquiring unit 531 is used to obtain the signal acquisition time threshold values that writing pencil is provided with.This time is used to be provided with the time threshold values that the terminal obtains signal, when the terminal when not receiving signal greater than the time of this threshold values, then assert the signal EOI of single literal.
Signal receiving unit 532 is used to receive the signal that writing pencil sends.
Receive and finish judging unit 533, be used for judging according to the time threshold values that said time threshold values acquiring unit 531 obtains whether single letter signal reception finishes.
Word recognition unit 534 is used for when said reception finishes the single literal reception of judging unit 533 judgements end, the signal that receives being identified as literal.
The embodiment of the invention; The terminal obtains the signal that writing pencil sends, and said signal is handled, and different types of signal is carried out different labeled or signal is identified as literal; Make the terminal obtain the signal that writing pencil obtains according to human writing style, and said signal is shown.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the input method of a writing pencil is characterized in that, said method comprising the steps of:
Establish a communications link with the terminal;
Write to produce signal at any enterprising running hand of object of the pressure sensitive device acquisition pressure of nib that makes; Send said signal to the terminal; So that handle said signal at the terminal, said signal is made up of the gyroscope that is arranged in writing pencil gyroscope displacement signal that produces and the pressure signal that the pressure apparatus that is positioned at the writing pencil nib produces.
2. the method for claim 1 is characterized in that, the said displacement signal of writing generation is specially:
The significance bit shifting signal that produces when writing single literal;
Write the invalid bit shifting signal of the gap generation of two literal.
3. method as claimed in claim 2 is characterized in that, the said significance bit shifting signal that produces when writing single literal is specially:
The signal that comprises said pressure signal and said gyroscope displacement signal simultaneously is a pressure significance bit shifting signal;
Only comprising said gyroscope displacement signal and the signal between two pressure significance bit shifting signals is gyroscope significance bit shifting signal.
4. method as claimed in claim 2 is characterized in that, the invalid bit shifting signal that said gap of writing two literal produces is specially:
When the signal that receives only comprises said gyroscope displacement signal, and the displacement of said gyroscope displacement signal is during greater than the space threshold values that is provided with, and said signal is set to invalid signals; Perhaps,
When the signal that receives only comprises said gyroscope displacement signal, and the gap of two signals is greater than time that is provided with during threshold values, after the signal received be set to invalid signals.
5. the method for claim 1 is characterized in that, said method is further comprising the steps of:
According to the enlargement factor of the configuration signalization at user's writing style and/or terminal, so that said signal is better handled at the terminal.
6. the input media of a writing pencil is characterized in that, said device comprises:
Communication connects sets up the unit, is used for establishing a communications link with the terminal;
The signal generation unit; Be used for writing the generation signal according to what writing pencil obtained at any pressure sensitive device that makes nib to carry out on the object of pressure, said signal is made up of the gyroscope that is arranged in writing pencil gyroscope displacement signal that produces and the pressure signal that is positioned at the pressure apparatus of writing pencil nib;
Signal transmitting unit, the signal that is used for that said signal generation unit is produced connects through communication sets up the communication connection of setting up the unit, sends to the terminal, so that handle said signal at the terminal.
7. device as claimed in claim 6 is characterized in that, the displacement signal that said displacement signal generation unit produces specifically comprises:
The significance bit shifting signal that produces when writing single literal;
Write the invalid bit shifting signal of the gap generation of two literal.
8. device as claimed in claim 7 is characterized in that, the said significance bit shifting signal that produces when writing single literal is specially:
The signal that comprises said pressure signal and said gyroscope displacement signal simultaneously is a pressure significance bit shifting signal;
Only comprising said gyroscope displacement signal and the signal between two pressure significance bit shifting signals is gyroscope significance bit shifting signal.
9. device as claimed in claim 7 is characterized in that, the invalid bit shifting signal that said gap of writing two literal produces is specially:
When the signal that receives only comprises said gyroscope displacement signal, and the displacement of said gyroscope displacement signal is during greater than the space threshold values that is provided with, and said signal is set to invalid signals; Perhaps,
When the signal that receives only comprises said gyroscope displacement signal, and the gap of two signals is greater than time that is provided with during threshold values, after the signal received be set to invalid signals.
10. device as claimed in claim 6 is characterized in that, said device also comprises:
Signal amplification unit is used for the enlargement factor according to the configuration signalization at user's writing style and/terminal, so that said signal is better handled at the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210214703.5A CN102799286B (en) | 2012-06-27 | 2012-06-27 | The input method of writing pencil and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210214703.5A CN102799286B (en) | 2012-06-27 | 2012-06-27 | The input method of writing pencil and device |
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| CN102799286A true CN102799286A (en) | 2012-11-28 |
| CN102799286B CN102799286B (en) | 2016-04-06 |
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| CN201210214703.5A Active CN102799286B (en) | 2012-06-27 | 2012-06-27 | The input method of writing pencil and device |
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| CN103049115A (en) * | 2013-01-28 | 2013-04-17 | 合肥华恒电子科技有限责任公司 | Handwriting input apparatus capable of recording handwriting pen moving posture |
| CN103116462A (en) * | 2013-01-28 | 2013-05-22 | 合肥华恒电子科技有限责任公司 | Handwriting input device with sound feedback |
| CN104900094A (en) * | 2015-05-15 | 2015-09-09 | 广东小天才科技有限公司 | Implementation method and device for writing simulation in terminal |
| CN110971946A (en) * | 2018-09-30 | 2020-04-07 | 深圳Tcl新技术有限公司 | Television handwriting pen and control method thereof |
| CN112578987A (en) * | 2020-12-25 | 2021-03-30 | 广州壹创电子科技有限公司 | Off-screen interactive touch all-in-one machine and interaction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103049115A (en) * | 2013-01-28 | 2013-04-17 | 合肥华恒电子科技有限责任公司 | Handwriting input apparatus capable of recording handwriting pen moving posture |
| CN103116462A (en) * | 2013-01-28 | 2013-05-22 | 合肥华恒电子科技有限责任公司 | Handwriting input device with sound feedback |
| CN103049115B (en) * | 2013-01-28 | 2016-08-10 | 合肥华恒电子科技有限责任公司 | Handwriting input device for recording motion gesture of handwriting pen |
| CN104900094A (en) * | 2015-05-15 | 2015-09-09 | 广东小天才科技有限公司 | Implementation method and device for writing simulation in terminal |
| CN110971946A (en) * | 2018-09-30 | 2020-04-07 | 深圳Tcl新技术有限公司 | Television handwriting pen and control method thereof |
| CN112578987A (en) * | 2020-12-25 | 2021-03-30 | 广州壹创电子科技有限公司 | Off-screen interactive touch all-in-one machine and interaction method thereof |
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|---|---|
| CN102799286B (en) | 2016-04-06 |
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