CN113348432A - Writing control method, writing board, handwriting input device and storage medium - Google Patents
Writing control method, writing board, handwriting input device and storage medium Download PDFInfo
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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
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Abstract
The application provides a writing control method, a writing board 4, a handwriting input device 1 and a storage medium. The writing control method comprises the following steps: measuring a touch signal when the handwriting pen 2 writes through the writing board 4; determining a corresponding linear table according to the touch signal; and determining the writing track of the handwriting pen 2 during writing according to the corresponding linear table. According to the method, the accuracy of calling the linear table by the writing board 4 is improved by calling the linear tables corresponding to different touch signals, so that the recognized coordinates are more accurate, and the formed writing track is higher in accuracy.
Description
The application relates to the technical field of writing boards, in particular to a writing control method, a writing board, a handwriting input device and a storage medium.
The touch position of the stylus pen is obtained by calculating the power of the stylus pen received by each channel of a sensor on the touch screen, the power of each channel on the sensor is different when the pen point of the stylus pen writes at different positions, and a chip in the touch screen judges the position coordinate by pre-establishing a corresponding relation table between the writing coordinate and the receiving power of each channel of the sensor. However, since the touch position of the stylus pen is determined by the magnitude of the received power of each channel or the ratio of the received power, when the distance between the stylus pen and the touch screen changes, the received power of the channels on the sensor is also affected, resulting in deviation of the writing track.
Disclosure of Invention
In a first aspect, an embodiment of the present application provides a writing control method, including:
measuring a touch signal when the handwriting pen writes through the writing board;
determining a corresponding linear table according to the touch signal;
and determining the writing track of the handwriting pen during writing according to the corresponding linear table.
Preferably, the measuring a touch signal while the stylus pen is writing through the writing pad includes:
measuring touch coordinates of the handwriting pen during writing through the writing board;
the determining the writing track of the handwriting pen according to the corresponding linear table comprises:
correcting the touch coordinates of the handwriting pen during writing according to the corresponding linear table;
and generating the writing track according to the corrected touch coordinate.
Preferably, the measuring a touch signal while the stylus pen is writing through the writing pad includes:
measuring the power or capacitance of the handwriting pen during writing through the writing board;
the determining a corresponding linear table according to the touch signal includes:
and determining the corresponding linear table according to the power or the capacitance.
Preferably, the determining a corresponding linear table according to the touch signal includes:
if the writing board is provided with paper, the linear meter is determined again according to the touch signal of the stylus pen when the stylus pen contacts the paper every time.
Preferably, the touch signal includes touch coordinates and power, or the touch signal includes touch coordinates and capacitance.
Preferably, the determining a corresponding linear table according to the touch signal includes:
and calling the corresponding linear table in a corresponding relation table according to the touch signal, wherein the corresponding relation table comprises the corresponding relation between the touch signal and the linear table.
In a second aspect, this embodiment provides a handwriting input apparatus, where the handwriting input apparatus includes a handwriting pen and a writing board, where the writing board includes a controller, a screen, and a plurality of detection devices, where the plurality of detection devices are disposed below the screen, each detection device corresponds to a known coordinate, and a paper sheet for the handwriting pen to write is placed above the screen;
the controller is used for acquiring a touch signal of the detection device when the handwriting pen writes; the controller is used for determining a corresponding linear table according to the touch signal; the controller is used for determining the writing track of the handwriting pen during writing according to the corresponding linear table.
Preferably, the controller is configured to acquire touch coordinates of the writing pad during writing by the stylus pen; the controller is used for correcting the touch coordinates when the handwriting pen writes according to the corresponding linear table; the controller is used for generating the writing track according to the corrected touch coordinate.
Preferably, the controller is configured to acquire a touch signal of the detection device when the stylus pen writes, and the controller includes:
the controller is used for acquiring the power or capacitance of the handwriting pen during writing measured by the detector;
the controller is configured to determine a corresponding linear table according to the touch signal, and includes:
the controller is used for determining the corresponding linear table according to the power or the capacitance.
Preferably, if the writing board is provided with paper, the controller is configured to re-determine the linear table according to the touch signal of the stylus pen each time the stylus pen contacts the paper.
Preferably, the detection device is a power sensor or a capacitive sensor.
Preferably, the writing board further includes a memory, a correspondence table is stored in the memory, the correspondence table includes a correspondence between the touch signal and the linear table, and the controller is configured to call the corresponding linear table in the correspondence table according to the touch signal.
In a third aspect, the present embodiment provides a writing board, where the writing board includes a controller, a screen, and a plurality of detecting devices, where the plurality of detecting devices are disposed below the screen, each detecting device corresponds to a known coordinate, and a paper sheet for a stylus to write on is disposed above the screen;
the controller is used for acquiring a touch signal of the detection device when the handwriting pen writes; the controller is used for determining a corresponding linear table according to the touch signal; the controller is used for determining the writing track of the handwriting pen during writing according to the corresponding linear table.
In a fourth aspect, the present embodiment provides a storage medium storing program instructions for executing the writing control method according to the first aspect when the program instructions are called by a computer.
According to the writing control method, the writing board, the handwriting input device and the storage medium, the accuracy of calling the linear table by the writing board is improved by calling the linear table corresponding to different touch signals, the recognized coordinates are more accurate, and the formed writing track precision is higher.
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a handwriting input device.
Fig. 2 is a block diagram of the composition of the writing board.
Fig. 3 is a flowchart of a writing control method provided in this embodiment.
FIG. 4 is a diagram illustrating an order range A corresponding to the determination of the detected quantity MnIs described.
FIG. 5 is a flow chart of determining a writing trajectory.
Reference numerals: 1-a handwriting input device; 2-a stylus; 3-paper; 4-writing board; 41-screen; 42-a detection device; 43-a controller; 44-memory.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the drawings described herein are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1 and 2, the handwriting input apparatus 1 includes a handwriting pen 2 and a writing board 4, the writing board 4 includes a controller 43, a memory 44, a screen 41, and a plurality of detecting devices 42, the plurality of detecting devices 42 are disposed below the screen 41, the plurality of detecting devices 42 are distributed in a matrix, each detecting device 42 corresponds to a known coordinate, and the detecting device 42 may be a power sensor or a capacitance sensor. The upper part of the screen 41 is used for placing paper 3 for the writing pen 2 to write. The memory 44 stores therein a linear table, a correspondence table including correspondences of the linear table of touch signals, and program instructions for being called by the controller 43.
Referring to fig. 3, the present embodiment provides a writing control method based on the handwriting input device 1 shown in fig. 1, where the writing control method includes steps S100, S200, and S300, and the detailed steps are as follows.
Step S100, a touch signal generated when the writing pen 2 writes is measured by the writing board 4.
In the using process of the writing board 4, a user can place the paper 3 on the writing board 4 and write on the paper 3 by using the writing pen 2, the content written by the writing pen 2 can be displayed or stored on other electronic equipment through the writing board 4, and the other electronic equipment can be a computer, a mobile phone and other devices with a display function.
The touch signal measured by the tablet 4 includes the detection amount M obtained by the detection device 42 and the touch coordinate of the stylus pen 2 during writing.
When the writing pen 2 contacts the paper 3 on the writing board 4, the detection device 42 of the writing board 4 can sense the proximity of the writing pen 2, and the detection device 42 in the writing board 4 obtains the corresponding detection amount M. The detected quantity M may be the power of the stylus 2 or the capacitance of the stylus 2 or other data signals of the stylus 2 that may be measured.
The activated detection device 42 corresponds to a known coordinate, and thus, the touch coordinates of the stylus 2 during writing can be obtained simultaneously.
Step S200, determining a corresponding linear table according to the touch signal.
The touch signal may include power or capacitance, and the corresponding linear table is determined according to the power or capacitance.
In step S200, all the order ranges a need to be determined in advance so as to select the corresponding order range a according to the detection amount M. The order range a is a set of consecutive detection quantities M. Referring to fig. 4, determining all the order ranges a includes steps S201, S202, and S203, which are detailed as follows.
Step S201, obtaining the detection quantity M of the detection device 42 when the handwriting pen 2 contacts the writing board 4 without paper 30。
That is, the stylus pen 2 is brought into contact with the writing board 4 on which the sheet 3 is not placed, and the detection amount M at this time is collected by the detection device 420。
Detection quantity M of detection device 420May be obtained by averaging, that is, acquiring a plurality of detection amounts of the detection device 42 when the writing pen 2 contacts the writing board 4 without placing the paper 3 on the writing board 4, and averaging to obtain M0。
Step S202, obtaining the detection quantity M of the detection device 42 when the handwriting pen 2 contacts the writing board 4 on which the limit number of paper 3 is placed1。
That is, first, a limit number of sheets 3 is placed on the writing board 4, and the limit number of sheets 3 is determined in accordance with the thickness of a single sheet 3 and the limit height of the sheet 3 allowed to be placed on the writing board 4. Then, the stylus pen 2 is used to touch the paper at the highest positionThe sheet 3 is surface-processed, and the detection amount M at this time is collected by the detection device 421。
Detection quantity M of detection device 421This can be obtained by averaging, that is, acquiring a plurality of detection amounts of the detection device 42 when the stylus pen 2 touches the writing board 4 in a state where a limited number of sheets 3 are placed on the writing board 4, and averaging to obtain M1。
M is because placing paper 3 on writing board 4 increases the distance between stylus 2 and detection device 42 as compared to not placing paper 3 on writing board 4, resulting in a decrease in the amount of detection collected by detection device 420>M 1。
Step S203, according to the detected quantity M0And a detected quantity M1Determining all order ranges An。
In step S203, first, the span value Δ M for each order range is determined (M)0-M 1) N, wherein n is the number of order ranges, and n is more than or equal to 2. Then, all the order ranges A are determinednAll the order ranges A are different according to the value of the number n of the order rangesnThe representation of (b) is different, and is divided into the following two cases:
(1) when n is 2, i.e. the number of order ranges is 2,
A 1indicates that the detected quantity interval M is less than or equal to M1+ΔM；
A 2Indicates that the detected quantity interval M > M1+ΔM。
Wherein A is1I.e. the first order range, A2I.e. the second order range.
(2) When n > 2, i.e. the number of order ranges is greater than 2,
A 1indicates that the detected quantity interval M is less than or equal to M1+ΔM；
A 2Indicating the section M of the detected quantity1+ΔM＜M≤M 1+2*ΔM；
A 3Indicating the section M of the detected quantity1+2*ΔM＜M≤M 1+3*ΔM；
····
A n-1Indicating the section M of the detected quantity1+(n-2)*ΔM＜M≤M 1+(n-1)*ΔM；
A nIndicates that the detected quantity interval M > M1+(n-1)*ΔM。
Wherein A isn-1I.e., the (n-1) th order range, AnI.e. the nth order range. According to An-1Indicating the section M of the detected quantity1+(n-2)*ΔM＜M≤M 1Plus (n-1) ×. DELTA.M, all expressions from the second order range to the (n-1) th order range can be deduced.
The sequence of step S201, step S202, and step S203 with respect to step S100 is not limited, and may be performed sequentially or simultaneously.
Determining all order ranges AnThen, the corresponding order range A can be determined according to the touch signalnThen according to the corresponding order range AnA corresponding linear table is determined. And each order range corresponds to a corresponding linear table, and after the current order range is determined, the linear table corresponding to the order range is called.
The method for establishing the linear table corresponding to each order range can refer to the following steps:
in the first step, the maximum detection amount and the minimum detection amount of the order range are determined. And adding paper 3 on the writing board 4 to enable the detection amount of the characteristic position to be as close as possible to the average value of the maximum detection amount and the minimum detection amount, and collecting the detection amounts of all nodes on the whole screen at the moment.
And secondly, selecting a plurality of samples, repeating the detection operation in the first step, finally calculating the mean value of the detection quantity of each node, and combining the mean values to form a linear table corresponding to the order range.
The memory 44 further stores a correspondence table between the order range and the linear table, and calls the corresponding linear table according to the correspondence table after the current order range is determined.
The calling frequency of the linear table can have different design modes, such as calling when the active pen is in new contact each time after being lifted, calling when the active pen is in re-contact after being lifted for T time, calling when the APP is in first contact after newly editing the document, and the like.
And step S300, determining the writing track of the writing pen 2 according to the corresponding linear table.
Step S300 further includes step S301 and step S302, and please refer to fig. 5, which specifically includes the following steps:
step S301, the touch coordinates of the stylus pen 2 during writing are corrected according to the corresponding linear table.
The linear table contains correction data of the original touch coordinate, and the higher the order range is, the larger the data correction amount is. The controller 43 is configured to correct the touch coordinates according to the linear table.
And step S302, generating a writing track according to the corrected touch coordinate.
Referring to fig. 1, the handwriting input device 1 provided in this embodiment adopts the above writing control method. Specifically, the controller 43 is configured to execute the writing control method described above. In this embodiment, the controller 43 may be a processor, the writing board 4 further includes a memory 44, the memory 44 stores a program instruction corresponding to the writing control method, and the controller 43 calls the program instruction in the memory 44 to execute the writing control method, where the memory 44 may be a solid-state memory, a memory card, or the like. In other embodiments, the controller 43 is a chip, and the program instructions corresponding to the writing control method are stored in a memory space of the chip.
The writing board, the writing control method and the handwriting input device provided by the embodiment can call the corresponding linear meter according to the touch signal only by acquiring the touch signal when the writing board measures the writing of the handwriting pen at different moments, so that the self-adaptive compensation is carried out, the accuracy of calling the linear meter by the writing board is improved, the recognized coordinate is more accurate, and the formed writing track precision is higher.
In addition, the method eliminates the influence of all external factors such as the thickness, the material quality and the quantity of the paper on the calling of the linear table, changes of the external factors are converted into changes of the touch signals, the corresponding linear table is called according to the touch signals, the called linear table is more accurate, the recognized coordinates are more accurate, and the formed writing track is higher in accuracy.
The embodiment also provides a storage medium, wherein the storage medium stores program instructions, and the program instructions are used for executing the writing control method after being called by a computer. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (14)
- A writing control method, comprising:measuring a touch signal when the handwriting pen writes through the writing board;determining a corresponding linear table according to the touch signal;and determining the writing track of the handwriting pen during writing according to the corresponding linear table.
- The writing control method of claim 1, wherein the measuring a touch signal while the stylus is writing through the writing pad comprises:measuring touch coordinates of the handwriting pen during writing through the writing board;the determining the writing track of the handwriting pen according to the corresponding linear table comprises:correcting the touch coordinates of the handwriting pen during writing according to the corresponding linear table;and generating the writing track according to the corrected touch coordinate.
- The writing control method of claim 1, wherein the measuring a touch signal while the stylus is writing through the writing pad comprises:measuring the power or capacitance of the handwriting pen during writing through the writing board;the determining a corresponding linear table according to the touch signal includes:and determining the corresponding linear table according to the power or the capacitance.
- The writing control method of claim 1, wherein the determining a corresponding linear table according to the touch signal comprises:if the writing board is provided with paper, the linear meter is determined again according to the touch signal of the stylus pen when the stylus pen contacts the paper every time.
- The writing control method of claim 1, wherein the touch signal comprises touch coordinates and power, or wherein the touch signal comprises touch coordinates and capacitance.
- The writing control method of claim 1, wherein the determining a corresponding linear table according to the touch signal comprises:and calling the corresponding linear table in a corresponding relation table according to the touch signal, wherein the corresponding relation table comprises the corresponding relation between the touch signal and the linear table.
- The handwriting input device is characterized by comprising a handwriting pen and a writing board, wherein the writing board comprises a controller, a screen and a plurality of detection devices, the detection devices are arranged below the screen, each detection device corresponds to a known coordinate, and paper for the handwriting pen to write is placed above the screen;the controller is used for acquiring a touch signal of the detection device when the handwriting pen writes; the controller is used for determining a corresponding linear table according to the touch signal; the controller is used for determining the writing track of the handwriting pen during writing according to the corresponding linear table.
- The handwriting input apparatus according to claim 7, wherein said controller is configured to obtain the touch coordinates of the writing tablet measured while the stylus is writing; the controller is used for correcting the touch coordinates when the handwriting pen writes according to the corresponding linear table; the controller is used for generating the writing track according to the corrected touch coordinate.
- The handwriting input apparatus according to claim 7, wherein said controller is configured to obtain the touch signal of said detection device when said handwriting pen is writing, and comprises:the controller is used for acquiring the power or capacitance of the handwriting pen during writing measured by the detector;the controller is configured to determine a corresponding linear table according to the touch signal, and includes:the controller is used for determining the corresponding linear table according to the power or the capacitance.
- The handwriting input apparatus of claim 7, wherein if a paper is provided on said writing pad, said controller is configured to re-determine said linear table according to said touch signal of said stylus pen each time said stylus pen touches said paper.
- The handwriting input apparatus according to claim 7, characterized in that said detection device is a power sensor or a capacitance sensor.
- The handwriting input apparatus according to claim 7, wherein said writing pad further comprises a memory, said memory stores a correspondence table, said correspondence table comprises correspondence between said touch signal and said linear table, and said controller is configured to call said corresponding linear table in said correspondence table according to said touch signal.
- A writing board is characterized by comprising a controller, a screen and a plurality of detection devices, wherein the detection devices are arranged below the screen, each detection device corresponds to a known coordinate, and paper for a writing pen to write is placed above the screen;the controller is used for acquiring a touch signal of the detection device when the handwriting pen writes; the controller is used for determining a corresponding linear table according to the touch signal; the controller is used for determining the writing track of the writing pen according to the corresponding linear table.
- A storage medium storing program instructions for executing the writing control method according to any one of claims 1 to 6 when called by a computer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/081316 WO2020199170A1 (en) | 2019-04-03 | 2019-04-03 | Writing control method, writing board, manual writing input device and storage medium |
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| CN113348432A true CN113348432A (en) | 2021-09-03 |
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| CN201980079794.6A Pending CN113348432A (en) | 2019-04-03 | 2019-04-03 | Writing control method, writing board, handwriting input device and storage medium |
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| WO (1) | WO2020199170A1 (en) |
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| CN102289316A (en) * | 2010-06-18 | 2011-12-21 | 三星电子株式会社 | Method and apparatus for correcting touch coordinates in touch system |
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| JP4040625B2 (en) * | 2002-09-12 | 2008-01-30 | 松下電器産業株式会社 | Image processing apparatus, printer apparatus, photographing apparatus, and television receiver |
| CN107066148A (en) * | 2017-04-25 | 2017-08-18 | 广东小天才科技有限公司 | Method and device for improving recognition precision of writing board |
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2019
- 2019-04-03 CN CN201980079794.6A patent/CN113348432A/en active Pending
- 2019-04-03 WO PCT/CN2019/081316 patent/WO2020199170A1/en active Application Filing
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| CN102289316A (en) * | 2010-06-18 | 2011-12-21 | 三星电子株式会社 | Method and apparatus for correcting touch coordinates in touch system |
| US20120037433A1 (en) * | 2010-08-16 | 2012-02-16 | Yun-Hsiang Yeh | Handwritten input device and an angle correcting method thereof |
| US20150253851A1 (en) * | 2014-03-06 | 2015-09-10 | Samsung Electronics Co., Ltd. | Electronic device and method for outputting feedback |
| CN106716317A (en) * | 2014-10-01 | 2017-05-24 | 齐科斯欧公司 | Method and apparatus for addressing touch discontinuities |
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| WO2020199170A1 (en) | 2020-10-08 |
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Application publication date: 20210903 |