CN115469764B - Electronic handwriting signature/signing handwriting fidelity method and system - Google Patents
Electronic handwriting signature/signing handwriting fidelity method and system Download PDFInfo
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- CN115469764B CN115469764B CN202211004988.XA CN202211004988A CN115469764B CN 115469764 B CN115469764 B CN 115469764B CN 202211004988 A CN202211004988 A CN 202211004988A CN 115469764 B CN115469764 B CN 115469764B
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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
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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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
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04162—Control or interface arrangements specially adapted for digitisers for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
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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
- G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
- G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
- G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
- G06F3/04883—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures for inputting data by handwriting, e.g. gesture or text
Abstract
The invention discloses an electronic handwriting signature/signature handwriting display offset fidelity method, which is characterized in that the arrangement of the screen display handwriting of the current electronic handwriting right below a handwriting pen is changed to offset relative to a handwriting pen sensing point, and the offset direction is the pointing direction of a pen point when the pen is held, so that the habit of writing where the traditional writing is more accordant; on the other hand, as the pen point of the common electronic handwriting pen is thicker, the handwriting display is positioned under the pen point and is extremely easy to cause shielding, so that the handwriting cannot be seen immediately. Therefore, the invention can greatly solve the problems of unsmooth writing and poor fidelity compared with paper signature handwriting in the traditional electronic handwriting signature/signing, thereby ensuring that the electronic handwriting signature/signing is more convenient and humanized.
Description
Technical Field
The invention relates to the technical field of electronic handwriting signatures, in particular to an electronic handwriting signature/signature handwriting display offset fidelity method.
Background
With the development of the internet and information technology, traditional paper handwritten signatures/lots have been gradually replaced by electronic handwritten signatures/lots. Electronic signatures/lots have become increasingly popular in the fields of office automation, banking, e-government, online transactions, etc.
However, the current electronic signature/signature lot is far less fluent in using an electronic handwriting pen than the traditional paper signature, and many signature effects are not ideal. One of the analysis reasons is that the paper signature is the written one and the signature is the written one, and the traditional electronic handwriting signature/signature shows that the handwriting is right below the pen point, and the electronic screen has a certain protection thickness, so that a certain distance exists between the displayed handwriting and the pen point, the direction of the handwriting display forms an obvious turning angle with the direction of the pen point, and the handwriting does not accord with the sensory effect of writing; moreover, the pen point of the general electronic handwriting pen is thicker than that of the traditional pen such as a pen, a ball pen and the like, handwriting under the pen point is easy to shade, a writer cannot see own handwriting in time, influence is brought to the fluency of subsequent pen conveying, especially, the quick pen stroke conversion effect is quite unsatisfactory, when the previous pen stroke effect cannot be seen in time, the pen falling and pen conveying of subsequent strokes are influenced, and compared with paper signature/signing, the handwriting fidelity difficulty is quite high.
Disclosure of Invention
In view of the above, the present invention provides an electronic handwriting signature/signature handwriting display offset fidelity method, which can effectively improve the above-mentioned prior art problems.
The invention relates to an electronic handwriting signature/signature batch handwriting display offset fidelity method, which is characterized in that screen display handwriting of electronic handwriting is sensed by a pen relative to a handwriting pen sensing point (x 0 , y 0 ) The handwriting shifting is carried out, so that the handwriting shifting device is more suitable for the habit of timely seeing and clearly reading written handwriting after writing, is convenient for carrying strokes of subsequent strokes, and is more suitable for the writing habit of common people; the offset comprises that the handwriting displayed on the screen is uniformly and integrally displayed and translated on the display screen relative to the handwriting sensing point according to a preset offset, wherein the preset offset comprises a transverse offset Deltax and a longitudinal offset Deltay, the offset is realized by a program, and the method comprises the following steps of:
firstly, the coordinates (x 0 , y 0 ) Next, a predetermined offset (Δx, Δy) is obtained, and then handwriting display point coordinates are calculated according to the predetermined offset, wherein x=x 0 +△x，y=y 0 And (5) displaying the handwriting on a display screen in real time.
The display offset does not affect the record of the sensing point position by the software, the original information is still unchanged, and the handwriting display width can still refer to the traditional electronic handwriting signature/signing technology. The sensing point is a center point or a center point of force of the handwriting pen in contact with a screen, the traditional electronic handwriting signature/signing handwriting is displayed under the sensing point, and because the screen display has a certain outer screen protection thickness, generally about 1mm, and unlike paper clinging to the pen point when in paper signature, the handwriting pen generally has a certain inclined angle with the screen, so that the display position of the traditional handwriting and the pointing direction of the pen point are visually seen to have obvious difference (mainly aiming at most handwriting habits of obliquely holding the signature pen), writing discomfort is easy to be caused, the main reason of the discomfort is that the outer screen has obvious thickness, and the direction of the displayed handwriting under the traditional electronic handwriting has an obvious turning angle with the direction of the pen point and does not accord with the writing habits; meanwhile, in order to obtain enough effective screen induction quantity, the pen point of the electronic handwriting pen is generally thicker, the handwriting under the real-time traditional pen point is always shielded, and the effect that paper signature/signing is just needed after the signing is not needed where the paper signature/signing is needed is avoided, so that the subsequent pen transportation is very easy to be unsmooth, and the problem that the current electronic handwriting signature/signing equipment or system is generally existed is solved; if the display handwriting is shifted to the direction of the pen point, although the display handwriting is not as visual as the paper signature effect, the display handwriting meets the traditional writing habit on one hand, and the probability that the handwriting is shielded by the pen point is reduced on the other hand, so that the handwriting can be seen in time and can be closer to the habit position.
The induction point acquisition technology, the handwriting width determination technology and the display technology of a display screen are all the prior art, and the current general electronic handwriting signing/signing equipment or system is universal.
Preferably, the predetermined offset includes an empirically estimated fixed offset or a theoretically calculated offset; the fixed offset estimated empirically is generally estimated according to the thickness of an outer screen and the habit of holding a pen, the handwriting is displayed basically in the direction of the pen point, the size of the pen point is considered, the number of the horizontal offset and the longitudinal offset can be between 0.5 and 1.5mm, and the same fixed number is generally taken; the theoretical calculation offset calculating method comprises the following steps:
the height from the outer surface of the display screen to the display surface is recorded as h, the inclination angle of the handwriting pen relative to the display screen is theta, the included angle between the projection of the handwriting pen on the display screen and the transverse edge of the display screen is phi, and the alpha is an adjusting coefficient, so that the transverse offset of the display handwriting is as follows:
△x=α*h*ctg(θ)*cos(φ);
the longitudinal offset is:
△y=α*h*ctg(θ)*sin(φ);
the inclination angle of the handwriting pen relative to the display screen is theta, the included angle between the projection of the handwriting pen on the display screen and the transverse edge of the display screen is phi, which is the habit average angle when a writer writes, and is not a real-time angle, because the real-time angle can be different from one another and from time to time, the display offset must be the integral translation of one-time writing, otherwise, the fidelity of the actual handwriting is not only influenced, but also the integral layout of the layout is influenced; because real-time theta and phi are difficult to obtain during actual writing, more actual calculation is still performed by adopting an estimated angle average value to calculate an evaluation average theoretical offset; the value range of the adjustment coefficient alpha is generally between 0.5 and 1, and the value comprises boundary points. The adjustment coefficient alpha is mainly set by considering that when the calculated offset is too large and used, another visual effect which does not accord with handwriting habit can be caused, namely, the displayed handwriting is too far away from the pen point, vision is not easy to adapt, and the correction mode is limited. The invention pursues that the handwriting is displayed in the direction of the pen point, has no accurate requirement, has a certain width, and can meet the requirement of approaching the habit of paper signature as long as the handwriting is not completely shielded by the pen point, so that the wider the stroke is, the smaller the alpha value can be. When α=1, this is equivalent to no adjustment.
The height from the outer surface of the display screen to the display surface is generally the thickness of the protective layer or the thickness of the outer screen, and when an air interlayer exists between the inner screen and the outer screen, the thickness of the air interlayer is required to be added.
Preferably, the predetermined offset does not exceed an offset threshold, and the offset threshold is set to avoid the display offset from being too large and not conforming to the daily habit.
Preferably, the direction of the screen display handwriting offset is directed towards the pen point during writing, and the direction of the screen display handwriting offset comprises the upper left offset of the right writing habit display to the sensing point and the upper right offset of the left writing habit display to the sensing point.
Preferably, the preset offset is subjected to an adjustment test by a user according to personal writing habits, so that an offset personal habit value is obtained, a software method provides an interface for the user adjustment test, and an empirically estimated fixed offset or a theoretically calculated offset provided by software can be used as an initial value or a reference value of the user adjustment test.
In a second aspect, an electronic handwriting signature/signing system is provided, wherein the system implements an electronic handwriting signature/signing handwriting display offset fidelity method as described above.
In a third aspect, an electronic handwriting signature/signing computer program is characterized in that the electronic handwriting signature/signing handwriting display offset fidelity method is implemented after the computer program is run.
In a fourth aspect, an electronic handwriting signing/signing device is characterized by comprising a display screen, a processor and a program memory, wherein the display screen is used for displaying handwriting of electronic handwriting signing/signing, the program memory stores a computer program, and the processor runs the computer program to realize the electronic handwriting signing/signing handwriting display offset fidelity method.
The invention has the advantages and beneficial effects that: the electronic handwriting signature/signing handwriting display offset fidelity method provided by the invention enables the electronic handwriting signature/signing process to be more in line with the habit of writing just after and where to see where in the traditional writing, and to be more similar to the habit of paper signature, thereby greatly improving the problems of unsmooth writing and poor fidelity compared with paper signature handwriting in the traditional electronic handwriting signature/signing process, and further enabling the electronic handwriting signature/signing application to be more convenient and humanized.
Drawings
FIG. 1 is a flow chart of a method of electronic handwriting signature/signature batch handwriting display offset fidelity;
fig. 2 is a schematic diagram of offset calculation.
The figures are labeled as follows:
the sensing point P of the handwriting pen and the outer surface of the display screen, the display screen display inner surface xOy plane, the projection point P ʹ of P on the xOy plane, the height h of P relative to P ʹ, the transverse direction of the display screen as x direction, the longitudinal direction of the display screen as Y direction, the included angle theta of PO and P ʹ O, the included angle phi of P ʹ O and x axis, the offset of P ʹ in x direction as Deltax, and the offset of P ʹ in Y direction as Deltay.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1: electronic handwriting signature/signature handwriting display offset fidelity method with offset being experience value
As shown in figure 1 of the drawings,the electronic handwriting signature/signature batch handwriting display offset fidelity method designed by the embodiment is characterized in that screen display handwriting of electronic handwriting is compared with handwriting pen induction points (x 0 , y 0 ) The handwriting shifting is carried out, so that the handwriting shifting device is more suitable for the habit of timely seeing and clearly reading written handwriting after writing, is convenient for carrying strokes of subsequent strokes, and is more suitable for the writing habit of common people; the offset comprises that the handwriting displayed on the screen is uniformly and integrally displayed and translated on the display screen relative to the handwriting sensing point according to a preset offset, wherein the preset offset comprises a transverse offset Deltax and a longitudinal offset Deltay, the offset is realized by a program, and the method comprises the following steps of:
firstly, the coordinates (x 0 , y 0 ) Next, a predetermined offset (Δx, Δy) is obtained, and then handwriting display point coordinates are calculated according to the predetermined offset, wherein x=x 0 +△x，y=y 0 And (5) displaying the handwriting on a display screen in real time.
The embodiment shows that the offset does not affect the record of the sensing point position by the software, the original information is still unchanged, and the handwriting display width is still in reference to the traditional electronic handwriting signature/signing technology. The sensing point is the center point of the contact or the center point of the force of the stylus and the screen. The induction point acquisition technology, the handwriting width determination technology and the display technology of a display screen are all the prior art, and the current general electronic handwriting signing/signing equipment or system is universal.
In the embodiment, the handwriting pens with the common pen point diameter of 1.5mm and 2.5mm are adopted for testing respectively, so that the handwriting is hardly shielded after being deflected, the handwriting feel is smoother and humanized, the overall effect of signing/signing and the fidelity of the handwriting are more similar to that of paper signing/signing.
Further, the predetermined offset includes an empirically estimated fixed offset or a theoretically calculated offset; the fixed offset estimated empirically is generally estimated according to the thickness of an outer screen and the habit of holding a pen, the display handwriting is basically positioned in the direction of the pen point, the size of the pen point is considered, the lateral offset and the longitudinal offset can be both 0.5-1.5 mm, the same fixed number is generally taken, the fixed offset is estimated empirically and is respectively taken 0.5mm and 1mm, the thicker pen point is tested, and better sense organ effect can be obtained compared with the display under the traditional mode. The default value of the embodiment is 1mm, and the user can adjust according to personal habits.
Further, the preset offset does not exceed an offset threshold, and the offset threshold is set to avoid the situation that the display offset is too large and does not accord with daily habits, and in this embodiment, both the lateral offset and the longitudinal offset threshold are set to be 2mm.
Further, the direction of the screen display handwriting offset is directed towards the pen point during writing, and the screen display handwriting offset comprises that the right writing habit display offset to the left upper part of the sensing point and the left writing habit display offset to the right upper part of the sensing point. The right-handed writing test is mainly performed in the embodiment.
Example 2: the offset adopts theoretical calculation value
The difference from embodiment 1 is that the predetermined offset amount employs a theoretical calculated offset amount, and the calculation method of the theoretical calculated offset amount includes:
as shown in fig. 2, the height from the outer surface of the display screen to the display surface is recorded as h, the inclination angle of the handwriting pen relative to the display screen is θ, the included angle between the projection of the handwriting pen on the display screen and the lateral edge of the display screen is Φ, and α is an adjustment coefficient, then the lateral offset of the display handwriting is:
△x=α*h*ctg(θ)*cos(φ);
the longitudinal offset is:
△y=α*h*ctg(θ)*sin(φ);
the inclination angle of the handwriting pen relative to the display screen is theta, the included angle between the projection of the handwriting pen on the display screen and the transverse edge of the display screen is phi, which is the habit average angle when a writer writes, and is not a real-time angle, because the real-time angle can be different from one another and from time to time, the display offset must be the integral translation of one-time writing, otherwise, the fidelity of the actual handwriting is not only influenced, but also the integral layout of the layout is influenced; because real-time theta and phi are difficult to obtain during actual writing, more actual calculation is still performed by adopting an estimated angle average value to calculate the estimated average theoretical offset.
In the embodiment, when software is implemented, a call parameter of a default value is set, a user can set the above parameters by himself to obtain a theoretical calculation value, or the default parameter can be adopted to calculate, the default parameter is h=1.5 mm, θ=45°, Φ=45°, α=0.8, and the calculated offset is 0.85mm.
And taking the threshold value when the theoretically calculated offset is larger than the threshold value.
The height from the outer surface of the display screen to the display surface is generally the thickness of the protective layer or the thickness of the outer screen, and when an air interlayer exists between the inner screen and the outer screen, the thickness of the air interlayer is required to be added.
Example 3: offset user self-adjustment
The difference from embodiment 1 is that the predetermined offset is subjected to an adjustment test by a user according to the personal writing habit, so as to obtain the personal habit value of the offset, the software method provides an interface for the adjustment test of the user, and the empirically estimated fixed offset or the theoretically calculated offset provided by the original system software can be used as an initial value or a reference value of the adjustment test of the user; the personal acquired experience parameters of personal habit can be stored in personal parameters, and the personal parameters can be called from the parameter column when the personal signature/approval is needed. In this embodiment, a parameter interface adjusted by a user is provided when the software is implemented, and the threshold value may be set to be adjustable without using an offset threshold.
In the embodiment, some special electronic signature/signing devices for individuals are mainly considered, so that personalized setting can be performed, and personal habits are met. For public-common electronic signature/signing devices, a software setting should generally be made with reference to either embodiment 1 or embodiment 2.
Example 4: electronic handwriting signature/signing system
An electronic handwriting signature/signature system, wherein the system implements the electronic handwriting signature/signature display offset fidelity method of any one of embodiments 1, 2, and 3.
Example 5: electronic handwriting signature/signing computer program
An electronic handwriting signature/signature computer program, wherein the computer program is configured to implement any one of the electronic handwriting signature/signature handwriting display offset fidelity methods of embodiments 1, 2, and 3 after execution.
Example 6: electronic handwriting signing/signing device
The electronic handwriting signature/signing device is characterized by comprising a display screen, a processor and a program memory, wherein the display screen is used for displaying handwriting of electronic handwriting signatures/signing, the program memory stores a computer program, and the processor runs the computer program to realize the electronic handwriting signature/signing handwriting display offset fidelity method in any one of embodiments 1, 2 and 3.
The basic principle of the invention is as follows: aiming at the problems that the handwriting of the current electronic handwriting signature/signing lot has poorer handwriting fidelity, unsmooth writing and the like compared with the paper signature, the traditional electronic handwriting screen display handwriting is arranged at the position right below a handwriting pen, so that the handwriting is offset relative to the handwriting pen sensing point, the offset direction is the pointing direction of a pen point when the pen is held, and the handwriting pen is more suitable for the habit of writing where the traditional writing is; on the other hand, as the pen point of the common electronic handwriting pen is thicker, the traditional handwriting display mode is extremely easy to cause shielding in a mode of being positioned right below the pen point, so that the handwriting cannot be seen immediately. The invention starts from the writing habit and fluency requirement of writers, takes the environment, mode and habit during paper signing as references, and can greatly improve the problems of unsmooth writing and poor fidelity compared with paper signing handwriting existing in the current electronic handwriting signing/signing, thereby ensuring that the electronic handwriting signing/signing application is more convenient, humanized and beautiful.
The application of the invention: the invention mainly adjusts the display program of the handwriting software, generally does not need to change in hardware, is convenient for users to use, can directly estimate the fixed offset by using experience for most common users, but needs to increase user options for right-handed and left-handed users; or a software automatic sensing judging module is added, whether the writer is right-handed or left-handed or other automatic identification judging modes are judged automatically according to the relative positions of the hand sensed by the screen and the pen, and the automatic identification judging mode is not in the protection of the invention. For professional users, when the requirements of strongly pursuing writing feeling, handwriting effect and the like exist, the theoretical calculation of the offset can be used, an interface for the user to set parameters by himself is provided, the user can search the parameter combination suitable for personal characteristics by himself according to personal habits, or the offset is directly set, and the user can adjust the offset without using an offset threshold or a threshold parameter.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications may be made without departing from the technical principles of the present invention, including a method for selecting parameters, a manner in which a user directly sets an offset according to personal habits, and the like, which are also considered as the protection scope of the present invention.
Claims (7)
1. An electronic handwriting signature/signature batch handwriting display offset fidelity method is characterized in that screen display handwriting of electronic handwriting is sensed by a pen relative to a handwriting pen sensing point (x 0 , y 0 ) The handwriting shifting is carried out, so that the handwriting shifting device is more suitable for the habit of timely seeing and clearly reading written handwriting after writing, is convenient for carrying strokes of subsequent strokes, and is more suitable for the writing habit of common people; the offset comprises the integral display translation carried out uniformly according to a preset offset, wherein the preset offset comprises a transverse offset Deltax and a longitudinal offset Deltay, the offset is realized by a program, and the method comprises the following steps of:
firstly, the coordinates (x 0 , y 0 ) Next, a predetermined offset (Δx, Δy) is obtained, and then handwriting display point coordinates are calculated according to the predetermined offset, wherein x=x 0 +△x，y=y 0 And finally displaying the handwriting on a display screen in real time;
the predetermined offset includes a theoretical calculated offset; the theoretical calculation offset calculating method comprises the following steps:
the height from the outer surface of the display screen to the display surface is recorded as h, the inclination angle of the handwriting pen relative to the display screen is theta, the included angle between the projection of the handwriting pen on the display screen and the transverse edge of the display screen is phi, and the alpha is an adjusting coefficient, so that the transverse offset of the display handwriting is as follows:
△x=α*h*ctg(θ)*cos(φ);
the longitudinal offset is:
△y=α*h*ctg(θ)*sin(φ)；
the height from the outer surface of the display screen to the display surface is the thickness of the protective layer or the thickness of the outer screen, and when an air interlayer exists between the inner screen and the outer screen, the thickness of the air interlayer is required to be added.
2. An electronic handwriting signature/approval handwriting display offset fidelity method according to claim 1 wherein said predetermined offset does not exceed an offset threshold.
3. The electronic handwriting signature/signature handwriting display offset fidelity method according to claim 2, wherein the direction of the screen display handwriting offset is directed towards a pen point during writing, and the method comprises the steps of offsetting a right writing habit display to an upper left of a sensing point and offsetting a left writing habit display to an upper right of the sensing point; the predetermined offset may further comprise an empirically estimated fixed offset.
4. A method of electronic handwriting signature/signature display shift fidelity according to any of claims 1 to 3 and wherein said predetermined shift amount is adjusted by a user according to personal writing habits to obtain a shift amount personal habit value, the software method providing an interface for user adjustment experiments.
5. An electronic handwriting signature/signing system implementing an electronic handwriting signature/signing script display offset fidelity method as claimed in any one of claims 1 to 4.
6. An electronic handwriting signature/signing computer program, characterized in that it implements an electronic handwriting signature/signing handwriting display offset fidelity method according to any of claims 1 to 4 after running the computer program.
7. An electronic handwriting signing/signing device, comprising a display screen, a processor and a program memory, wherein the display screen is used for displaying handwriting of electronic handwriting signing/signing, the program memory stores a computer program, and the processor runs the computer program to realize an electronic handwriting signing/signing handwriting display offset fidelity method according to any one of claims 1 to 4.
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| CN102156585A (en) * | 2011-04-27 | 2011-08-17 | 段西京 | Handwriting input control method and handwriting input device with mouse operation function |
| CN102253769A (en) * | 2011-08-12 | 2011-11-23 | 宁波易方教育科技发展有限公司 | Handwriting input calibrator and calibration method thereof |
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| JP2011154664A (en) * | 2010-01-26 | 2011-08-11 | Witswell Consulting & Services Inc | Handwriting ink display method and device |
| CN104407732B (en) * | 2014-10-29 | 2017-06-16 | 广州视睿电子科技有限公司 | synchronous writing method and system |
| US10649551B1 (en) * | 2018-12-27 | 2020-05-12 | Pixart Imaging Inc. | Pen mouse with an inclining compensation function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102156585A (en) * | 2011-04-27 | 2011-08-17 | 段西京 | Handwriting input control method and handwriting input device with mouse operation function |
| CN102253769A (en) * | 2011-08-12 | 2011-11-23 | 宁波易方教育科技发展有限公司 | Handwriting input calibrator and calibration method thereof |
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