CN112783346B - Handwriting data processing method, system, computer equipment and storage medium - Google Patents
Handwriting data processing method, system, computer equipment and storage medium Download PDFInfo
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- CN112783346B CN112783346B CN202110069060.9A CN202110069060A CN112783346B CN 112783346 B CN112783346 B CN 112783346B CN 202110069060 A CN202110069060 A CN 202110069060A CN 112783346 B CN112783346 B CN 112783346B
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- 238000000034 method Methods 0.000 claims abstract description 24
- 238000004590 computer program Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
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- 230000005540 biological transmission Effects 0.000 description 2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
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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
- G06F3/03—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
- G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means
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- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention discloses a handwriting data processing method, a handwriting data processing system, computer equipment and a storage medium. The method comprises the steps that a touch pad receives handwriting data written by a touch pen and sends the handwriting data to a reading module of a system main board, the reading module preprocesses the handwriting data to obtain coordinate data, the coordinate data are written into a frame buffer of the system main board, handwriting pictures are generated according to the coordinate data and displayed on a display screen, and the handwriting pictures are synchronously sent to a storage area through an application program. The invention shortens the step of handwriting data processing, so that the process from operation to display of handwriting is faster, and the invention has the advantage of reducing the delay sense during handwriting.
Description
Technical Field
The present invention relates to the field of data processing, and in particular, to a handwriting data processing method, system, computer device, and storage medium.
Background
At present, the handwriting APP of the writing software is sequentially subjected to the processes from handwriting operation to display, namely physical interruption (triggered by handwriting), system input, connector (ViewRoot), application program, frame buffer driving and display, more processing steps are performed in the process, the time consumption is more than 80ms, the whole response process is slower, and a user can feel that the display of the notes has obvious delay when handwriting is performed.
Disclosure of Invention
The invention aims to provide a handwriting data processing method, a system, computer equipment and a storage medium, which aim to solve the problem that handwriting display on a display screen has larger delay feeling due to more processing steps of handwriting on a touch pad in the prior art.
In a first aspect, an embodiment of the present invention provides a handwriting data processing method, including:
The touch pad receives handwriting data written by the touch pen and sends the handwriting data to a reading module of the system main board;
The reading module preprocesses the handwriting data to obtain coordinate data, and writes the coordinate data into a frame buffer of the system main board;
And generating a handwriting picture according to the coordinate data, displaying the handwriting picture on a display screen, and synchronously transmitting the handwriting picture to a storage area through an application program.
In a second aspect, an embodiment of the present invention provides a handwriting data processing system, comprising:
The touch pad is used for receiving handwriting data written by a user and sending the handwriting data to a reading module of the system main board;
the reading module is used for reading the handwriting data, obtaining coordinate data and writing the coordinate data into a frame buffer of the system main board;
And generating a handwriting picture according to the coordinate data, displaying the handwriting picture on a display screen, and synchronously transmitting the handwriting picture to a storage area through an application program.
In a third aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the handwriting data processing method according to the first aspect when executing the computer program.
In a fourth aspect, embodiments of the present invention also provide a computer readable storage medium, wherein the computer readable storage medium stores a computer program which, when executed by a processor, causes the processor to perform the handwriting data processing method of the first aspect.
The embodiment of the invention discloses a handwriting data processing method, a handwriting data processing system, computer equipment and a storage medium. The method comprises the steps that a touch pad receives handwriting data written by a touch pen and sends the handwriting data to a reading module of a system main board, the reading module preprocesses the handwriting data to obtain coordinate data, the coordinate data are written into a frame buffer of the system main board, handwriting pictures are generated according to the coordinate data and displayed on a display screen, and the handwriting pictures are synchronously sent to a storage area through an application program. The embodiment of the invention shortens the step of handwriting data processing, so that the process from operation to display of handwriting is faster, and the method has the advantage of reducing the delay sense during handwriting.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a handwriting data processing method according to an embodiment of the present invention;
FIG. 2 is a schematic sub-flowchart of a handwriting data processing method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another sub-flowchart of a handwriting data processing method according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram of a handwriting data processing system provided by an embodiment of the present invention;
fig. 5 is a schematic block diagram of a computer device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Referring to fig. 1, fig. 1 is a schematic flow chart of a handwriting data processing method according to an embodiment of the invention;
as shown in FIG. 1, the method includes steps S101-S103.
S101, the touch pad receives handwriting data written by a touch pen and sends the handwriting data to a reading module of a system main board.
In this embodiment, the handwriting screen of the touch pad is an electromagnetic screen, a user performs handwriting on the electromagnetic screen through a stylus pen and generates handwriting data, the physical interruption of the electromagnetic screen is 200 times per second at most, 100-125 times of the physical interruption are effectively reported, and the time consumed from receiving the handwriting data and sending the handwriting data to the reading module in this step is 8-10 ms.
In one embodiment, as shown in fig. 2, the step S101 includes:
S201, receiving each writing track of a touch pen on a screen by the touch pad, calculating a plurality of writing coordinate points of the writing track and generating time of each writing coordinate point, and obtaining corresponding writing data of the writing track according to the plurality of writing coordinate points and the generating time of each writing coordinate point;
S202, the touch pad sends the handwriting data to a reading module of the system main board.
In the embodiment, when a touch pen touches the touch pad in the handwriting process of a user, a first handwriting coordinate point starts to be generated, and in the continuous handwriting process, a plurality of handwriting coordinate points are continuously generated along a handwriting track until a last handwriting coordinate point is generated after the touch pen leaves the touch pad, wherein the process is a complete writing track, the generation time of each handwriting coordinate point is recorded while the handwriting coordinate point is generated, and handwriting data of the corresponding writing track is obtained according to the handwriting coordinate point and the generation time of each handwriting coordinate point.
And sending the handwriting data to a reading module of the system main board through the touch panel, wherein the system main board can be an android system main board, and the reading module is an android system component.
S102, the reading module preprocesses the handwriting data to obtain coordinate data, and writes the coordinate data into a frame buffer of the system main board.
Specifically, the step S102 includes:
And the reading module reads the received handwriting data and obtains the corresponding handwriting coordinate points, filters the handwriting coordinate points to obtain a plurality of key coordinate points and the generation time of each key coordinate point, obtains the coordinate data of the handwriting data according to the plurality of key coordinate points and the generation time of each key coordinate point, and writes the coordinate data into a frame buffer of the system main board.
In this embodiment, after the reading module receives and reads the handwriting data, all handwriting coordinate points of the handwriting data are obtained, in order to improve response time of handwriting processing, filtering the handwriting coordinate points and obtaining key coordinate points, reducing processing time consumption by reducing the number of the handwriting coordinate points, specifically, sorting according to generation time of the handwriting coordinate points, calculating and calculating the number of the remaining handwriting coordinate points, comparing with a preset number, if the number of the handwriting coordinate points is greater than the preset number, selecting and removing half of the handwriting coordinate points according to an interval selection mode, then calculating the number of the remaining handwriting coordinate points, if the number of the remaining handwriting coordinate points is greater than the preset number, removing half of the handwriting coordinate points according to an interval selection mode again until the number of the remaining handwriting coordinate points is less than the preset number, taking the last remaining coordinate points as key coordinate points, further, obtaining the data of the generation time of the key coordinate points according to the key point and each key coordinate point, and writing the frame of the system is more time-consuming time, and writing the data into the system is more time-consuming, and the system is improved, and the frame-writing speed of the data is more than 10ms.
It should be noted that, in this embodiment, the number of handwriting coordinate points of each piece of handwriting data is controlled by setting the preset number, specifically, when the handwriting coordinate points generated by the handwriting track is longer are more, the handwriting features are not lost by removing the number of handwriting coordinate points for many times, and when the handwriting coordinate points generated by the handwriting track is shorter, the number of removing the handwriting coordinate points is relatively less, so that the missing handwriting features are avoided.
S103, generating a handwriting picture according to the coordinate data, displaying the handwriting picture on a display screen, and synchronously transmitting the handwriting picture to a storage area through an application program.
Specifically, as shown in fig. 3, the step S103 includes:
S301, reading the coordinate data from the frame buffer, acquiring the key coordinate points and the generation time of each key coordinate point from the coordinate data, connecting the key coordinate points according to the generation time sequence to form a handwriting picture corresponding to the coordinate data, and displaying the handwriting picture on a display screen;
s302, the handwriting picture is sent to a storage area through application program synchronization.
In this embodiment, the frame buffer is a virtual buffer created in the Linux system, which is a direct image of a picture displayed on a screen, each storage unit of the frame buffer corresponds to a key coordinate point pixel on the screen, and after each key coordinate point is connected according to a time sequence of generation, a handwriting picture corresponding to the coordinate data can be formed in the frame buffer and displayed on the display screen.
And after the handwriting picture is displayed on the display screen, the handwriting picture is sent to a storage area for storage by the application program.
In an embodiment, the displaying on the display screen includes:
and sending the handwriting picture to the display screen through a bus and displaying the handwriting picture on a screen of the display screen.
In this embodiment, an interface connected to the frame buffer is provided on the display screen, and the display screen is connected to the frame buffer through a bus, so that the handwriting picture can be sent to the display screen through the bus, and is controlled by a Linux system and displayed on the screen of the display screen.
In one embodiment, the sending the handwriting picture to the display screen through the bus and displaying the handwriting picture on a screen of the display screen includes:
and displaying the handwriting picture on the display screen in a vertical synchronous mode.
In this embodiment, the handwriting picture is scanned in the vertical synchronization manner to generate a vertical synchronization signal, and the vertical synchronization signal is sent to the picture processing module, so that the picture processing module is restricted by the vertical synchronization signal when processing the handwriting picture, and thus the situation that the picture of the handwriting picture is torn during display can be prevented, and the handwriting picture is better displayed, and the time consumption of the process of reading from the frame buffer and displaying on the display screen in this step is about 12ms.
In one embodiment, the reading module is in communication with the frame buffer created through an android surface window.
In this embodiment, the reading module is in communication with the frame buffer, so as to facilitate stable transmission of the handwriting data, and the frame buffer may be created and managed through the android surface window, so that stable storage of the handwriting data by the frame buffer may be implemented.
The embodiment of the invention also provides a handwriting data processing system which is used for executing any embodiment of the handwriting data processing method. In particular, referring to FIG. 4, FIG. 4 is a schematic block diagram of a handwriting data processing system provided by an embodiment of the present invention.
As shown in FIG. 4, the handwriting data processing system 400 comprises a touch pad 401, a system main board 402 and a display screen 403, wherein the system main board 402 comprises a reading module 4021, a frame buffer 4022, an application program 4023 and a storage area 4024;
The touch pad 401 is configured to receive handwriting data written by a user and send the handwriting data to a reading module of a system motherboard;
the reading module 4021 is configured to read the handwriting data and obtain coordinate data, and write the coordinate data into a frame buffer 4022 of the system motherboard;
And generating a handwriting picture according to the coordinate data, displaying the handwriting picture on a display screen, and synchronously transmitting the handwriting picture to a storage area 4024 through an application program 4023.
The system shortens the step of handwriting data processing, so that the process from operation to display of handwriting is faster, the total time consumption in the processing process is only about 40ms, and the system has the advantage of reducing the delay sense during handwriting.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus and units described above may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
The handwriting data processing system described above may be implemented in the form of a computer program which is executable on a computer device as shown in fig. 5.
Referring to fig. 5, fig. 5 is a schematic block diagram of a computer device according to an embodiment of the present invention. The computer device 500 is a server, and the server may be a stand-alone server or a server cluster formed by a plurality of servers.
With reference to FIG. 5, the computer device 500 includes a processor 502, memory, and a network interface 505 connected by a system bus 501, where the memory may include a non-volatile storage medium 503 and an internal memory 504.
The non-volatile storage medium 503 may store an operating system 5031 and a computer program 5032. The computer program 5032, when executed, may cause the processor 502 to perform handwriting data processing methods.
The processor 502 is used to provide computing and control capabilities to support the operation of the overall computer device 500.
The internal memory 504 provides an environment for the execution of a computer program 5032 in the non-volatile storage medium 503, which computer program 5032, when executed by the processor 502, causes the processor 502 to perform handwriting data processing methods.
The network interface 505 is used for network communication, such as providing for transmission of data information, etc. It will be appreciated by those skilled in the art that the architecture shown in fig. 5 is merely a block diagram of some of the architecture relevant to the present inventive arrangements and is not limiting of the computer device 500 to which the present inventive arrangements may be implemented, as a particular computer device 500 may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
Those skilled in the art will appreciate that the embodiment of the computer device shown in fig. 5 is not limiting of the specific construction of the computer device, and in other embodiments, the computer device may include more or less components than those shown, or certain components may be combined, or a different arrangement of components. For example, in some embodiments, the computer device may include only a memory and a processor, and in such embodiments, the structure and function of the memory and the processor are consistent with the embodiment shown in fig. 5, and will not be described again.
It should be appreciated that in embodiments of the present invention, the Processor 502 may be a central processing unit (Central Processing Unit, CPU), the Processor 502 may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application SPECIFIC INTEGRATED Circuits (ASICs), off-the-shelf Programmable gate arrays (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. Wherein the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In another embodiment of the invention, a computer-readable storage medium is provided. The computer readable storage medium may be a non-volatile computer readable storage medium. The computer readable storage medium stores a computer program, wherein the computer program when executed by a processor implements the handwriting data processing method of the embodiment of the invention.
The storage medium is a physical, non-transitory storage medium, and may be, for example, a U-disk, a removable hard disk, a Read-only memory (ROM), a magnetic disk, or an optical disk.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus, device and unit described above may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (8)
1. A handwriting data processing method, comprising:
The touch pad receives handwriting data written by the touch pen and sends the handwriting data to a reading module of the system main board;
The reading module preprocesses the handwriting data to obtain coordinate data, and writes the coordinate data into a frame buffer of the system main board;
Generating a handwriting picture according to the coordinate data, displaying the handwriting picture on a display screen, and synchronously transmitting the handwriting picture to a storage area through an application program;
The touch pad receives each writing track of the touch pen on a screen, calculates a plurality of writing coordinate points of the writing track and the generation time of each writing coordinate point, and obtains corresponding writing data of the writing track according to the plurality of writing coordinate points and the generation time of each writing coordinate point; the touch pad sends the handwriting data to a reading module of the system main board;
The method comprises the steps that the reading module reads received handwriting data and obtains corresponding handwriting coordinate points, filtering the handwriting coordinate points to obtain a plurality of key coordinate points and the generation time of each key coordinate point, sorting according to the generation time of the handwriting coordinate points, calculating the number of the rest handwriting coordinate points, comparing the number of the rest handwriting coordinate points with a preset number, selecting half of handwriting coordinate points according to a mode of selecting at intervals and removing the handwriting coordinate points if the number of the handwriting coordinate points is larger than the preset number, then continuously removing half of handwriting coordinate points according to a mode of selecting at intervals until the number of the rest handwriting coordinate points is smaller than the preset number, taking the last rest handwriting coordinate points as the key points, and generating the frame of the handwriting coordinate data of the main board according to the plurality of the handwriting coordinate points and the time of writing the handwriting coordinate points.
2. A handwriting data processing method according to claim 1 and wherein generating a handwriting picture from said coordinate data and displaying on a display screen and transmitting said handwriting picture to a storage area via application synchronization comprises:
Reading the coordinate data from the frame buffer memory, acquiring the key coordinate points and the generation time of each key coordinate point from the coordinate data, connecting the key coordinate points according to the generation time sequence to form a handwriting picture corresponding to the coordinate data, and displaying the handwriting picture on a display screen;
the handwriting pictures are sent to a storage area through application program synchronization.
3. A handwriting data processing method according to claim 2 and wherein said displaying on a display screen comprises:
and sending the handwriting picture to the display screen through a bus and displaying the handwriting picture on a screen of the display screen.
4. A handwriting data processing method according to claim 3, wherein said sending said handwriting pictures to said display screen via a bus and displaying them on a screen of a display screen comprises:
and displaying the handwriting picture on the display screen in a vertical synchronous mode.
5. A handwriting data processing method according to claim 1 and wherein said reading module is in communication with said frame buffer created through an android surface window.
6. The handwriting data processing system is characterized by comprising a touch pad, a system main board and a display screen, wherein the system main board comprises a reading module, a frame buffer, an application program and a storage area;
The touch pad is used for receiving handwriting data written by a user and sending the handwriting data to a reading module of the system main board;
the reading module is used for reading the handwriting data, obtaining coordinate data and writing the coordinate data into a frame buffer of the system main board;
Generating a handwriting picture according to the coordinate data, displaying the handwriting picture on a display screen, and synchronously transmitting the handwriting picture to a storage area through an application program;
the system comprises a touch pad, a reading module, a display module and a display module, wherein the touch pad is used for receiving handwriting data written by a user and sending the handwriting data to the system main board, the touch pad receives each writing track of a touch pen on a screen, calculates a plurality of handwriting coordinate points of the writing track and generation time of each handwriting coordinate point, and obtains corresponding handwriting data of the writing track according to the plurality of handwriting coordinate points and the generation time of each handwriting coordinate point;
the reading module is used for reading the handwriting data and obtaining coordinate data, writing the coordinate data into a frame buffer of the system main board, and comprises the steps of reading the received handwriting data and obtaining corresponding handwriting coordinate points, filtering the handwriting coordinate points to obtain a plurality of key coordinate points and the generation time of each key coordinate point, sorting according to the generation time of the handwriting coordinate points, calculating the number of the rest handwriting coordinate points, comparing the number of the rest handwriting coordinate points with a preset number, selecting half of the coordinate points according to a mode of selecting at intervals and removing the rest handwriting coordinate points if the number of the rest handwriting coordinate points is larger than the preset number, continuing to remove half of the handwriting coordinate points according to the mode of selecting at intervals until the number of the rest handwriting coordinate points is smaller than the preset number, taking the last rest handwriting coordinate points as the key points, and writing the coordinate points according to the plurality of the handwriting coordinate points and the time frame buffer of the coordinate data of each system, and obtaining the coordinate data of the system main board.
7. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements a method of handwriting data processing according to any of claims 1 to 5 when executing the computer program.
8. A computer readable storage medium storing a computer program which when executed by a processor causes the processor to perform a method of handwriting data processing according to any of claims 1 to 5.
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| CN114442845B (en) * | 2021-12-24 | 2024-12-17 | 锐捷网络股份有限公司 | Writing track rendering method and device, writing screen equipment and storage medium |
| CN115237320B (en) * | 2022-07-21 | 2025-01-17 | 京东方科技集团股份有限公司 | Handwriting display method, touch display device, computer device and medium |
| CN115328383B (en) * | 2022-08-22 | 2024-07-12 | 珠海凯芯微电子科技有限公司 | Identification method and system for display equipment |
| CN118057961A (en) * | 2022-09-19 | 2024-05-21 | 广州视源电子科技股份有限公司 | Interactive system, board card, writing track display method, tablet and storage medium |
| CN117176900B (en) * | 2023-09-26 | 2024-12-10 | 苏州爱医斯坦智能科技有限公司 | A method and system for synchronizing whiteboard data for remote consultation |
| CN118113166B (en) * | 2024-04-19 | 2024-07-05 | 青岛罗博数码科技有限公司 | Method for storing trace stream by intelligent pen box |
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| CN110597444B (en) * | 2018-06-12 | 2021-03-09 | 广州视源电子科技股份有限公司 | Handwriting display method and device, terminal device and storage medium |
| CN109062491A (en) * | 2018-07-23 | 2018-12-21 | 广州视源电子科技股份有限公司 | Handwriting processing method and device for interactive intelligent equipment |
| CN112181171A (en) * | 2020-08-25 | 2021-01-05 | 深圳市椰壳信息科技有限公司 | Input method and device of intelligent pen on intelligent display terminal and intelligent pen |
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| CN105868590A (en) * | 2015-01-19 | 2016-08-17 | 阿里巴巴集团控股有限公司 | Method and device for processing handwriting data |
| CN111651079A (en) * | 2020-05-18 | 2020-09-11 | 广州视源电子科技股份有限公司 | Handwriting display method, device, equipment and computer storage medium |
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