WO2019237448A1 - Method and system for generating handwriting of multiple pressure sensing pens, and related component - Google Patents

Abstract

A method and system for generating handwriting of multiple pressure sensing pens, and an infrared touch screen writing component and a computer-readable storage medium. The generation method comprises: acquiring pen-down touch data and pressure sensing data of an active point, and recording a correlation between a touch point ID and a pressure sensing pen ID in a pairing table; generating a first frame of handwriting according to the pen-down touch data and the pressure sensing data; when writing touch data is received, determining a first target pressure sensing pen according to the pairing table, and generating an intermediate frame of handwriting according to the pressure sensing data and the writing touch data; and when pen-up touch data is received, determining a second target pressure sensing pen according to the pairing table, and generating a final frame of handwriting according to the pressure sensing data and the pen-up touch data. By means of the method, the corresponding handwriting can be correctly identified in a writing process of multiple pressure sensing pens, such that the accuracy of generating the handwriting is improved.

Description

Method, system and related components for generating writing handwriting of multiple pressure-sensitive pens

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 15, 2018, with an application number of 201810620455.1, and an invention name of "a method, system and related components for generating multi-pressure pen writing handwriting", The entire contents of which are incorporated herein by reference.

Technical field

The invention relates to the field of intelligent touch interaction, in particular to a method and system for generating writing handwriting of multiple pressure-sensitive pens, a computer-readable storage medium and an infrared touch screen writing component.

Background technique

Infrared touch screen is also called infrared technology touch screen (Infrared Touch Screen). The infrared emitting and receiving sensing elements on the touch screen frame form an infrared detection network on the screen surface. Any touch object can change the infrared on the contact. And realize touch screen operation.

In the prior art, writing handwriting is displayed according to the touch data of the infrared detection circuit on the touch screen and the pressure-sensitive data uploaded by the pressure-sensitive pen, but since the touch data and the pressure-sensitive data are not uploaded by the same device, when multiple pressure-sensitive pens are simultaneously When writing on the infrared touch screen, the infrared touch screen cannot correctly recognize the correspondence between the touch data and the pressure-sensitive pen, and thus cannot correctly display the handwriting written by multiple pressure-sensitive pens.

Therefore, how to correctly identify the corresponding writing handwriting in the writing process of multiple pressure-sensitive pens and improve the accuracy of generating writing handwriting is a technical problem that those skilled in the art need to solve at present.

Summary of the Invention

The purpose of this application is to provide a method, system, computer-readable storage medium, and infrared touch screen writing component for generating writing handwriting of multiple pressure-sensitive pens, which can correctly perform the writing process of multiple pressure-sensitive pens. Recognize the corresponding writing handwriting and improve the accuracy of generating writing handwriting.

In order to solve the above technical problems, the present application provides a method for generating writing pressure of multiple pressure-sensitive pens. The generating method includes:

Obtain pen-in touch data and pressure-sensitive data of the active point, and record the correspondence between the touch-point ID of the pen-in touch data of each active point and the pressure-sensitive pen ID corresponding to the pressure-sensitive data in the pairing table;

Generate the first frame of handwriting of all active points according to the chronological order according to the pen touch data and pressure data;

When the writing touch data is received, a first target pressure-sensitive pen corresponding to the writing touch data is determined according to the pairing table, and an intermediate frame writing handwriting is generated according to the pressure-sensitive data and the writing touch data of the first target pressure-sensitive pen;

When the touch-up touch data is received, a second target pressure-sensitive pen corresponding to the touch-up touch data is determined according to the pairing table, and the last frame of writing handwriting is generated according to the pressure-sensitive data of the second target touch-sensitive pen and the touch-up touch data, And delete all pen-in touch data and pressure-sensitive data corresponding to the pen-up touch data in the pairing table.

Optionally, before obtaining pen-in touch data and pressure-sensitive data of the active point, the method further includes:

Receive pen-in touch data and pressure-sensitive data of all touch points in order in chronological order;

Optionally, after generating the last frame of writing handwriting according to the pressure-sensitive data of the second target pressure-sensitive pen and the pen-up touch data, the method further includes:

Delete all pen-in touch data and pressure-sensitive data corresponding to the pen-up touch data in the pairing table.

Determine the width and height of each touch point according to the pen touch data of all touch points, and set the touch point with a width smaller than the standard width and a height smaller than the standard height as the active point.

Optionally, the correspondence between the touch point ID of the pen touch data of each active point and the pressure sensitive pen ID corresponding to the pressure sensitive data in the pairing table includes:

Set the touch point ID corresponding to the active point according to the receiving order of the pen touch data;

Obtain the pressure-sensitive pen ID corresponding to the active point according to the pressure-sensitive data;

The correspondence between the touch point ID and the pressure-sensitive pen ID is recorded in the pairing table.

Optionally, when the writing touch data is received, determining the first target pressure-sensitive pen corresponding to the writing touch data according to the pairing table includes:

When the writing touch data is received, determine the first target touch point ID of the first target touch point according to the writing touch data, and query whether the first target touch point ID is recorded in the pairing table;

If yes, query the first target pressure-sensitive pen ID corresponding to the first target touch point ID according to the pairing table, and determine the first target pressure-sensitive pen corresponding to the writing touch data according to the first target pressure-sensitive pen ID.

Optionally, when receiving the touch-up touch data, determining the second target pressure-sensitive pen corresponding to the touch-up touch data according to the pairing table includes:

When receiving the touch-up touch data, determine the second target touch point ID of the second target touch point according to the touch-up touch data, and query whether the second target touch point ID is recorded in the pairing table;

If yes, query the second target pressure-sensitive pen ID corresponding to the second target touch point ID according to the pairing table, and determine the second target pressure-sensitive pen corresponding to the touch-up touch data according to the second target pressure-sensitive pen ID.

Optionally, the pressure-sensitive data includes a writing pressure value and a pressure-sensitive pen ID of the pressure-sensitive pen that generates the pressure-sensitive data.

The present application also provides a system for generating handwriting of multiple pressure-sensitive pens. The system includes:

The pairing table setting module is used to obtain the pen-in touch data and pressure-sensitive data of the active points, and record the pen-in touch data and pressure-sensitive data corresponding to each active point in the pairing table in chronological order;

Write-in handwriting generation module, for generating the first frame of writing handwriting of all active points according to the pairing table;

A writing handwriting generating module is configured to, when receiving writing touch data, determine a first target pressure-sensitive pen corresponding to the writing touch data according to a pairing table, and generate an intermediate according to the pressure-sensitive data of the first target pressure-sensitive pen and the writing touch data. Frame, writing, handwriting

The lift-up handwriting generating module is configured to determine a second target pressure-sensitive pen corresponding to the lift-up touch data according to the pairing table when receiving the lift-up touch data, and according to the pressure-sensitive data and lift-up of the second target pressure-sensitive pen Touch the data to generate the last frame of handwriting.

The present application also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed, the steps of the method for generating a plurality of pressure-sensitive pen writing handwritings are performed.

The application also provides an infrared touch screen writing component, which includes an infrared touch screen, a pressure-sensitive pen, a memory, and a processor. The infrared touch screen is used to periodically scan a preset area through an infrared receiving tube. Pen touch data, and / or write touch data, and / or lift pen writing track; the pressure-sensitive pen is used to perform writing operations on the infrared touch screen through the pressure-sensitive pen input end; and stored in the memory There is a computer program, and when the processor calls the computer program in the memory, the steps of the method for generating a plurality of pressure-sensitive pen writing handwriting are implemented.

The invention provides a method for generating writing handwriting of multiple pressure-sensitive pens, which includes acquiring pen-in touch data and pressure-sensitive data of active points, and recording the pen-in corresponding to each active point in a pairing table according to a time sequence. Touch data and pressure-sensitive data; generate the first frame writing handwriting of all active points according to the pairing table; when receiving writing touch data, determine the first target pressure-sensitive pen corresponding to the writing touch data according to the pairing table, and according to the first The pressure-sensitive data and writing touch data of a target pressure-sensitive pen generate intermediate frame writing handwriting; when receiving the touch-up touch data, determine a second target pressure-sensitive pen corresponding to the touch-up touch data according to the pairing table, and according to the second target The pressure-sensitive data and pressure-up touch data of the pressure-sensitive pen generate the last frame of writing handwriting, and delete all the pen-in touch data and pressure-sensitive data corresponding to the pressure-up touch data in the pairing table.

The writing operation of the pressure-sensitive pen on the infrared touch screen can be divided into three processes: pen-entry, writing, and pen-lifting. The present invention first records the pen-entry touch of each active point when entering the pen in the pairing table according to the time sequence. Data and pressure-sensitive data, establish the correspondence between pen-in touch data and pressure-sensitive data. Because the pressure-sensitive pen does not lift the pen-in touch data, write the touch data, and raise the pen-touch data in a single writing process. The touch point ID of a point is unchanged. Therefore, when the writing touch data is detected, the pressure-sensitive pen corresponding to the writing touch data can be determined by looking up the pairing table, and then the writing touch data is fused with the pressure-sensitive data of the corresponding pressure-sensitive pen to generate an intermediate frame writing handwriting. Similarly, when When the touch-up touch data is detected, the pressure-sensitive pen corresponding to the touch-up touch data can be determined by searching through the pairing table, and then the touch-up data of the touch-up pen and the pressure-sensitive data of the corresponding pressure-sensitive pen are fused to generate the last frame of writing handwriting. This solution can correctly identify corresponding writing handwriting during the writing process of multiple pressure-sensitive pens, and improves the accuracy of generating writing handwriting. The present application also provides a multi-pressure-sensitive pen writing handwriting generating system, a computer-readable storage medium, and an infrared touch screen writing component, which have the above-mentioned beneficial effects, and are not repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a flowchart of a method for generating handwriting of multiple pressure-sensitive pens according to an embodiment of the present application;

2 is a flowchart of a method for setting a pairing table according to an embodiment of the present application;

3 is a flowchart of a method for generating intermediate frame writing handwriting provided by an embodiment of the present application;

4 is a flowchart of a method for generating a last frame of writing handwriting provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a system for generating writing pressure of multiple pressure-sensitive pens according to an embodiment of the present application.

detailed description

In the following, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 below. FIG. 1 is a flowchart of a method for generating writing pressure of multiple pressure-sensitive pens provided by an embodiment of the present application.

Specific steps can include:

S101: Obtain pen-in touch data and pressure-sensitive data of an active point, and record the correspondence between the touch-point ID of the pen-in touch data of each active point and the pressure-sensitive pen ID corresponding to the pressure-sensitive data in a pairing table;

The implementation body of this embodiment is a processor, and the processor receives information about pressure-sensitive pen writing, and then generates writing handwriting for display on a screen. The infrared touch screen includes a screen body and an infrared detection circuit. The infrared detection circuit is used to detect touch information at a preset height above the screen body. The infrared detection circuit may include an infrared transmitting tube and an infrared receiving tube, and the touch information of the interval of a preset height above the screen body is detected by scanning at a preset period. Using infrared detection circuit to detect touch information is equivalent to a dense net consisting of infrared rays at a preset height above the screen body. When a touched object reaches a position at a preset height above the screen body, this "net" specifically The infrared receiving condition of the radio frequency will change, so it is possible to determine whether there is a touch point through the touch data. It should be noted that the touch point determined according to the touch data (including pen touch data, writing touch data, and pen lifting touch data) is actually a point of dense "net" contact formed by the touch object and infrared rays, not the touch object. The point of contact with the screen body. However, because the touch data detected by the infrared detection circuit can accurately determine the position of the touch point, and the distance between the interval detected by the infrared detection circuit and the screen body is small, when the touch object contacts the screen body, the touch object can be determined based on the touch data. The contact position with the screen body.

This embodiment is directed to the handwriting display of the pressure-sensitive pen on the infrared touch screen. During the writing process of the pressure-sensitive pen, the infrared detection circuit will receive the following three types of touch data:

(1) In-touch data: At this time, the pressure-sensitive pen is just in contact with the infrared touch screen, and the infrared detection circuit can detect a sudden change in infrared reception.

(2) Writing touch data: At this time, the pressure-sensitive pen is moved on the infrared touch screen to generate a writing trajectory, and the infrared detection circuit can detect the trajectory of the pressure-sensitive pen moving within the detection range (that is, the movement of the touch point).

(3) Lift the pen touch data: At this time, the pressure-sensitive pen just leaves the infrared touch screen, and the infrared reception detected by the infrared detection circuit at the next moment is the same as before the pen-touch data is generated.

The touch point ID mentioned above refers to the number that the processor actively assigns to the touch point when a touch point is detected. As long as the touch point is always present on the infrared touch screen, its touch point ID will not change, and the position of the touch point will move. It also does not change the touch point ID. It should also be explained that in this embodiment, by default, each pressure-sensitive pen has its corresponding pressure-sensitive pen ID, and each pressure-sensitive pen ID is inherent information of the pressure-sensitive pen and cannot be changed. The line color, line type, etc. of the writing handwriting can be determined according to the pressure-sensitive pen ID of the pressure-sensitive pen.

It should be noted that this embodiment is mainly directed to a method for generating writing handwriting of multiple pressure-sensitive pens when the multiple pressure-sensitive pens successively write on the infrared touch screen. In this embodiment, there are multiple pressure-sensitive pens writing on the infrared touch screen by default, and the pressure-in time of all the pressure-sensitive pens is different. The purpose is to determine which pressure-sensitive data corresponds to each touch data. Pen-generated. In a practical application scenario, since the user of the pressure-sensitive pen is a user, and the users of multiple pressure-sensitive pens are multiple different users, it is not possible to generate multiple pressure-sensitive pens to perform the pen input operation at the same time. .

The concept of the active point mentioned in this step is proposed relative to the passive point. The active point refers to the touch point determined by the infrared detection circuit when the pressure-sensitive pen is operated on the infrared touch screen. The passive point is a non-pressure point. The touch point when the touch object of the touch pen is in contact with the infrared touch screen, specifically, the passive point may be the point where the hand touches the infrared touch screen when the hand is using the pressure-sensitive pen. This embodiment is directed to the writing handwriting of multiple pressure-sensitive pens on an infrared touch screen, and is not an operation to determine whether a touch point is an active point. Therefore, in this embodiment, all active points are finger pressure. The stylus acts on the first point on the infrared touch screen. Of course, as a preferred implementation, there may be an operation of judging whether the touch point is an active point after the touch point is detected: that is, sequentially receiving pen-in touch data and pressure-sensitive data of all touch points in sequence; according to all The pen-in touch data of a touch point determines the width and height of each touch point, and sets a touch point whose width is less than the standard width and whose height is less than the standard height as the active point. It can be understood that all touch points with a width greater than or equal to the standard width and / or a height greater than or equal to the standard height are passive points. Further, the touch point mentioned here is not a point in the mathematical or physical sense, but refers to the shape of a cross section within the detection range of the pressure-sensitive pen and the infrared detection circuit, which can be specifically understood as a circle. The width refers to the horizontal length of the touch point, and the height refers to the vertical length of the touch point. As a preferred implementation manner, it can also be determined whether the touch point is an active point according to whether the area of the touch point is smaller than the standard area.

This step is not limited to acquiring the pen-in touch data and pressure-sensitive data of several active points (the pressure-sensitive data here is specifically the pressure-sensitive data corresponding to the moment when the pen-in touch data is generated), and the active points can be obtained according to Set the pairing table in order of the pen-in touch data and pressure-sensitive data, that is, record the correspondence between each pen-in touch data and each type of pressure-sensitive data in the pairing table, a pair of pen-in touch data and pressure-sensitive data Specifically, it refers to the position information about the touch point detected by the infrared detection circuit and the pressure value detected by the pressure sensor at the writing end of the pressure-sensitive pen when a pressure-sensitive pen is inserted on the infrared touch screen. The significance of the correspondence between the touch data and the pressure-sensitive data is that the movement track of the pressure-sensitive pen on the infrared touch screen is bound to a specific number of pressure-sensitive pens. Of course, there may be different writing colors and different display effects for each pressure-sensitive pen, and the corresponding display manner may be determined according to the correspondence between the pen touch data and the pressure-sensitive pen data.

S102: Generate the first frame writing handwriting of all active points according to the touch-in data and pressure-sensitive data according to the time sequence;

Among them, since the pen-in touch data and pressure-sensitive data of all active points are recorded in the pairing table, the first frame of pen-in touch data and pressure-sensitive touch data can be written. Further, in this step, the first frame of writing handwriting corresponding to multiple active points can be generated successively. Because the time of writing of multiple pressure-sensitive pens on the infrared touch screen is inconsistent, as long as there is pen-in touch data and For the pressure-sensitive data, the operations in this step can be performed to obtain the first frame writing handwriting of each pen.

S103: When the writing touch data is received, a first target pressure-sensitive pen corresponding to the writing touch data is determined according to the pairing table, and an intermediate frame writing handwriting is generated according to the pressure-sensitive data and the writing touch data of the first target pressure-sensitive pen;

Among them, in the foregoing discussion, the touch data detected by the infrared touch screen has been divided into three types. When writing touch data is detected, it means that the pressure-sensitive pen is moving on the infrared touch screen at this time. It should be noted that the display process of writing handwriting mentioned in this embodiment specifically refers to the entire process of the pressure-sensitive pen from contacting the infrared touch screen to the pressure-sensitive pen moving on the infrared touch screen and finally leaving the infrared touch screen, as long as When the pressure-sensitive pen leaves the infrared touch screen, it is considered that one writing handwriting of a pressure-sensitive pen on the infrared touch screen has been completed. Therefore, in the process of receiving writing touch data in this step, the writing end of the pressure-sensitive pen is always in contact with the infrared touch screen. Further, since the pressure-sensitive pen does not lift the pen during a writing process, the touch point ID of the active point corresponding to the pen input data, the writing touch data, and the pen lifting touch data is unchanged, so the pairing table can be queried by The touch point ID corresponding to the pen touch data corresponding to the touch point ID corresponding to the writing touch data can determine the number of the pressure sensitive pen corresponding to the writing touch data, and then the pressure sensitive data of the corresponding pressure pen and the writing can be determined. The fusion of touch data results in intermediate frame writing.

What needs to be explained here is that the writing handwriting of the pressure-sensitive pen is divided into three parts in this embodiment: (1) the writing handwriting in the first frame when the pen is entered, and (2) the writing handwriting in the middle frame during the writing process (which may include (Several frames), (3) the last frame of writing when lifting the pen.

S104: When the touch-up touch data is received, a second target pressure-sensitive pen corresponding to the touch-up touch data is determined according to the pairing table, and the last frame is generated according to the pressure-sensitive data of the second target touch-sensitive pen and the touch-up touch data. Writing handwriting.

The operation performed in this step is basically the same as that in S103, and the number of the pressure-sensitive pen corresponding to the touch-up touch data is also queried through a pairing table. According to the pressure-sensitive data of the second target pressure-sensitive pen and the pressure-up pen Touch the data to generate the last frame of handwriting.

As a preferred embodiment, after this step is performed, there may be an operation of deleting all pen-entry touch data and pressure-sensitive data corresponding to the pen-up touch data in the pairing table. When receiving the pen-up touch data, the pressure is explained. The process of writing with a touch pen is over. At this time, if you keep all pen touch data and pressure-sensitive data corresponding to the touch-up touch data in the pairing table, the corresponding relationship in the writing process of other pressure-sensitive pens will be confusing, so you can change it. delete.

It can be understood that the first frame writing handwriting, the middle frame writing handwriting, and the last frame writing handwriting obtained in S102, S103, and S104 may not be the writing writing of the same pressure-sensitive pen, but as long as the pressure-sensitive pen is completed on the infrared touch screen After writing, there will be three kinds of writing handwriting. The combination of the first frame writing handwriting, the middle frame writing handwriting, and the last frame writing handwriting corresponding to the same pressure sensitive pen is the entire writing handwriting of the pressure sensitive pen.

It should be noted that S103 performs a display operation on the middle frame writing handwriting of the first target pressure-sensitive pen. In fact, there must be a display operation on the last frame writing handwriting of the first target pressure-sensitive pen after S103. The specific content is basically the same as S104. When the touch-up touch data is received, the first target pressure-sensitive pen corresponding to the touch-up touch data is determined according to the pairing table, and according to the pressure-sensitive data of the first target pressure-sensitive pen. And touch up the touch data to generate the last frame of writing handwriting; S104 performs the display operation of the middle frame writing handwriting of the second target pressure-sensitive pen. In fact, there must be a middle of the second target pressure-sensitive pen before S104. The specific operation of the frame writing handwriting display operation is basically the same as S103. When the writing touch data is received, a second target pressure-sensitive pen corresponding to the writing touch data is determined according to the pairing table, and the second target pressure-sensitive pen is determined according to the pairing table. Generated pressure-sensitive data and writing touch data to generate intermediate frame writing handwriting. It is worth noting that the display of writing handwriting on one pen is a very common operation in the prior art, and the simultaneous display of writing handwriting on multiple pens is the purpose of this application.

The writing operation of the pressure-sensitive pen on the infrared touch screen can be divided into three processes: pen-entry, writing, and pen-lifting. The present invention first records the pen-entry touch of each active point when entering the pen in the pairing table according to the time sequence. Data and pressure-sensitive data, establish the correspondence between pen-in touch data and pressure-sensitive data. Because the pressure-sensitive pen does not lift the pen-in touch data, write the touch data, and raise the pen-touch data in a single writing process. The touch point ID of a point is unchanged. Therefore, when the writing touch data is detected, the pressure-sensitive pen corresponding to the writing touch data can be determined by looking up the pairing table, and then the writing touch data is fused with the pressure-sensitive data of the corresponding pressure-sensitive pen to generate an intermediate frame writing handwriting. Similarly, when When the touch-up touch data is detected, the pressure-sensitive pen corresponding to the touch-up touch data can be determined by searching through the pairing table, and then the touch-up data of the touch-up pen and the pressure-sensitive data of the corresponding pressure-sensitive pen are fused to generate the last frame of handwriting. This solution can correctly identify corresponding writing handwriting during the writing process of multiple pressure-sensitive pens, and improves the accuracy of generating writing handwriting.

Please refer to FIG. 2 below. FIG. 2 is a flowchart of a method for setting a pairing table according to an embodiment of the present application. This embodiment is a more specific explanation of S101 in the first embodiment.

Specific steps can include:

S201: Receive pen-in touch data and pressure-sensitive data of all touch points in sequence according to time sequence;

In this embodiment, since the writing notes are displayed for multiple pressure-sensitive pens, there may be operations of writing multiple pressure-sensitive pens on the infrared touch screens at different times. The purpose of this step is to receive pen-in touch data and pressure-sensitive data in the order in which the touch points appear. It should be noted that each time a new touch point appears, the processor will automatically assign a touch point ID to the touch point. When pen touch data is detected, it will be accompanied by pressure-sensitive data. The pressure-sensitive data includes the writing pressure value and The pressure-sensitive pen ID of the pressure-sensitive pen generating the pressure-sensitive data.

S202: Determine the width and height of each touch point according to the pen-in touch data of all touch points, and set the touch point whose width is less than the standard width and whose height is less than the standard height as the active point.

S203: Set a touch point ID corresponding to the active point according to the receiving order of the pen-in touch data;

S204: Obtain the pressure-sensitive pen ID corresponding to the active point according to the pressure-sensitive data;

S205: Record the correspondence between the touch point ID and the pressure-sensitive pen ID in the pairing table.

Please refer to FIG. 3 below. FIG. 3 is a flowchart of a method for generating intermediate frame writing handwriting provided by an embodiment of the present application. This embodiment is a more specific explanation of S103 in the first embodiment.

Specific steps can include:

S301: When the writing touch data is received, determine a first target touch point ID of the first target touch point according to the writing touch data;

S302: Query whether the first target touch point ID is recorded in the pairing table; if yes, go to S303; if not, end the process;

S303: Query the first target pressure-sensitive pen ID corresponding to the first target touch point ID according to the pairing table, and determine the first target pressure-sensitive pen corresponding to the writing touch data according to the first target pressure-sensitive pen ID.

S304: Generate intermediate frame writing handwriting according to the pressure-sensitive data and the writing touch data of the first target pressure-sensitive pen;

Please refer to FIG. 4 below, which is a flowchart of a method for generating a last frame of writing handwriting provided by an embodiment of the present application. This embodiment is a more specific explanation of S104 in the first embodiment.

S401: When the touch-up touch data is received, determine the second target touch point ID of the second target touch point according to the touch-up touch data;

S402: Query whether the second target touch point ID is recorded in the pairing table; if yes, go to S403; if not, end the process;

S403: Query a second target pressure-sensitive pen ID corresponding to the second target touch point ID according to the pairing table, and determine a second target pressure-sensitive pen corresponding to the touch-up touch data according to the second target pressure-sensitive pen ID.

S404: Generate the last frame of writing handwriting according to the pressure-sensitive data of the second target pressure-sensitive pen and the touch-up data of the pen;

S405: Delete all pen-entry touch data and pressure-sensitive data corresponding to the pen-up touch data in the pairing table.

Based on the method mentioned in the above embodiment, the following describes in detail the entire process of displaying writing handwriting on the infrared touch screen from the perspective of a pairing table:

(1) Define the pairing table

The pairing table can be defined by the structure array. The pairing table can record information of multiple touch points (the specific number can be set according to the number of touch points actually supported by the touch frame). Each structure of the pairing table can include four elements: active points / Passive point mark, touch point ID, pressure pen ID, pairing mark.

(2) Set the pairing table

When there is touch down data (that is, pen touch data), the width and height of the touch point can be determined according to the touch down data, and the width and height are compared to a set threshold. If the threshold is greater than this, the pairing table is written passively. Click the mark and record the touch point ID; if it is less than the threshold, write the pairing table active point mark and touch electric ID. When the pressure-sensitive pen data is generated, judge the above two information (active point mark and touch electric ID) and write The pressure pen ID, the pairing flag is set, and the first frame of active point data is generated according to the set pairing table.

(3) Use the pairing table

When there is touch move data (that is, writing touch data), the corresponding row of the pairing table is found according to the touch point ID and it is determined whether it is an active point. If it is a passive point, it is not processed. If it is an active point, it is based on the pairing table. The pairing information combines touch move data and pressure-sensitive data to generate intermediate frame writing handwriting.

(4) Release the pairing table

When there is touch-up data (that is, lift the touch data), the corresponding row of the pairing table is searched according to the touch point ID and the source point flag is judged. If it is a passive point, it is not processed. If it is an active point, it is based on the pairing table. The pairing information combines the touch-up data and the pressure-sensitive data, and then the pairing information is cleared.

Please refer to FIG. 5, which is a schematic structural diagram of a multi-pressure-sensitive pen writing handwriting generating system according to an embodiment of the present application;

The system can include:

The pairing table setting module 100 is configured to obtain pen-in touch data and pressure-sensitive data of the active points, and record the touch point ID and the pressure-sensitive data of the pen-in touch data of each of the active points in the pairing table. The corresponding relationship of the corresponding pressure-sensitive pen ID;

The pen-in handwriting generation module 200 is configured to generate, according to the time sequence, the first frame writing handwriting of all the active points according to the pen-in touch data and the pressure-sensitive data;

A writing handwriting generating module 300 is configured to, when receiving writing touch data, determine a first target pressure-sensitive pen corresponding to the writing touch data according to the pairing table, and according to the pressure sensitivity of the first target pressure-sensitive pen Data and the writing touch data to generate intermediate frame writing handwriting;

The pen-up handwriting generating module 400 is configured to determine a second target pressure-sensitive pen corresponding to the pen-up touch data according to the pairing table, and according to the pressure-sensitive data of the second target pressure-sensitive pen and the pen-up touch The data generates the last frame of handwriting, and deletes all pen-in touch data and pressure-sensitive data in the pairing table corresponding to the pen-up touch data.

Further, the display system further includes:

A data receiving module, configured to receive pen-in touch data and pressure-sensitive data of all touch points in order in time sequence;

An active point judgment module is configured to determine the width and height of each touch point according to the pen touch data of all touch points, and set the touch point whose width is less than the standard width and the height is less than the standard height as the Source.

Further, the pairing table setting module 300 includes:

Active point data acquisition unit for acquiring pen-in touch data and pressure-sensitive data of an active point

A touch point ID setting unit, configured to set a touch point ID corresponding to the active point according to a receiving order of the pen-in touch data;

A pressure-sensitive pen ID determining unit, configured to obtain a pressure-sensitive pen ID corresponding to the active point according to the pressure-sensitive data;

The correspondence between the touch point ID and the pressure-sensitive pen ID is recorded in the pairing table.

Further, the writing handwriting generating module 300 includes:

A first querying unit is configured to, when receiving the writing touch data, determine a first target touch point ID of a first target touch point according to the writing touch data, and query whether the pairing table records the first target touch point ID. A target touch point ID;

A first pressure-sensitive pen determining unit, configured to query the first target pressure-sensitive pen ID corresponding to the first target touch point ID according to the pairing table when the first target touch-point ID is recorded in a pairing table And determine a first target pressure-sensitive pen corresponding to the writing touch data according to the first target pressure-sensitive pen ID;

A first stroke generating unit, configured to generate an intermediate frame writing stroke according to the pressure-sensitive data of the first target pressure-sensitive pen and the writing touch data

Further, the pen-raising handwriting generating module 400 includes:

A second query unit, configured to determine a second target touch point ID of a second target touch point according to the touch-up touch data when the touch-up touch data is received, and query whether the first pair is recorded in the pairing table Two target touch point IDs;

A second pressure-sensitive pen determining unit, configured to query the second target pressure point corresponding to the second target touch point ID according to the pairing table when the second target touch point ID is recorded in the pairing table A pen ID, and a second target pressure-sensitive pen corresponding to the pen-up touch data is determined according to the second target pressure-sensitive pen ID.

A second handwriting generating unit, configured to generate a last frame of writing handwriting according to the pressure-sensitive data of the second target pressure-sensitive pen and the pen lifting touch data,

A pairing table release unit, configured to delete all pen-in touch data and pressure-sensitive data in the pairing table corresponding to the pen-up touch data

Since the embodiment of the system part corresponds to the embodiment of the method part, for the embodiment of the system part, refer to the description of the embodiment of the method part, which will not be repeated here.

The present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed, the steps provided in the foregoing embodiments can be implemented. The storage medium may include: a U disk, a mobile hard disk, a read-only memory (Read-Only Memory (ROM)), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, which can store program codes.

The application also provides an infrared touch screen writing component, which includes an infrared touch screen, a pressure-sensitive pen, a memory, and a processor. The infrared touch screen is used to periodically scan a preset area through an infrared receiving tube. Pen touch data, and / or write touch data, and / or lift pen writing track; the pressure-sensitive pen is used to perform writing operations on the infrared touch screen through the pressure-sensitive pen input end; and stored in the memory There is a computer program, and when the processor calls the computer program in the memory, the steps of the method for generating a plurality of pressure-sensitive pen writing handwriting are implemented. Of course, the infrared touch screen writing component may also include various network interfaces, power supplies, and other components.

Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant part, refer to the description of the method section. It should be noted that, for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and modifications can be made to the application, and these improvements and modifications also fall into the protection scope of the claims of the application.

It should also be noted that in this specification, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is any such actual relationship or order between operations. Moreover, the terms "including", "comprising", or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also those that are not explicitly listed Or other elements inherent to such a process, method, article, or device. Without more restrictions, the elements defined by the sentence "including a ..." do not exclude the existence of other identical elements in the process, method, article, or equipment that includes the elements.

Claims (10)

A method for generating handwriting of multiple pressure-sensitive pens, characterized in that the generating method includes: Acquire pen-in touch data and pressure-sensitive data of an active point, and record a correspondence between a touch point ID of the pen-in touch data of each of the active points and a pressure-sensitive pen ID corresponding to the pressure-sensitive data in a pairing table relationship; Generating the first frame writing handwriting of all the active points according to the chronological order of the pen-in touch data and the pressure-sensitive data; When writing touch data is received, a first target pressure-sensitive pen corresponding to the writing touch data is determined according to the pairing table, and generated according to the pressure-sensitive data of the first target pressure-sensitive pen and the writing touch data. Middle frame writing handwriting; When receiving pen-up touch data, determine a second target pressure-sensitive pen corresponding to the pen-up touch data according to the pairing table, and according to the pressure-sensitive data of the second target pressure-sensitive pen and the pen-up Touch the data to generate the last frame of handwriting. The generating method according to claim 1, further comprising: before acquiring pen-in touch data and pressure-sensitive data of the active point, further comprising: Receive pen-in touch data and pressure-sensitive data of all touch points in order in chronological order; The width and height of each touch point are determined according to the pen touch data of all touch points, and the touch point whose width is less than the standard width and whose height is less than the standard height is set as the active point. The generating method according to claim 1, wherein after generating the last frame of writing handwriting according to the pressure-sensitive data of the second target pressure-sensitive pen and the touch-up data of the pen, the method further comprises: Delete all pen-in touch data and pressure-sensitive data corresponding to the pen-up touch data in the pairing table. The generating method according to claim 1, wherein the correspondence relationship between the touch point ID of the pen touch data of each of the active points and the pressure sensitive pen ID corresponding to the pressure sensitive data is recorded in a pairing table, including: : Setting a touch point ID corresponding to the active point according to the receiving order of the pen-in touch data; Obtaining a pressure-sensitive pen ID corresponding to the active point according to the pressure-sensitive data; The correspondence between the touch point ID and the pressure-sensitive pen ID is recorded in the pairing table. The generating method according to claim 4, wherein when receiving writing touch data, determining the first target pressure-sensitive pen corresponding to the writing touch data according to the pairing table comprises: When the writing touch data is received, determining a first target touch point ID of a first target touch point according to the writing touch data, and querying whether the first target touch point ID is recorded in the pairing table; If yes, query the first target pressure-sensitive pen ID corresponding to the first target touch point ID according to the pairing table, and determine the first target corresponding to the writing touch data according to the first target pressure-sensitive pen ID. Pressure-sensitive pen. The generating method according to claim 4, characterized in that, when receiving touch-up touch data, determining a second target pressure-sensitive pen corresponding to the touch-up touch data according to the pairing table comprises: When receiving pen-up touch data, determining a second target touch point ID of a second target touch point according to the pen-up touch data, and querying whether the second target touch point ID is recorded in the pairing table; If yes, query the second target pressure-sensitive pen ID corresponding to the second target touch point ID according to the pairing table, and determine the second target pressure-sensitive pen ID corresponding to the pen-up touch data according to the second target pressure-sensitive pen ID. Target pressure pen. The generating method according to claim 1, wherein the pressure-sensitive data includes a writing pressure value and a pressure-sensitive pen ID of the pressure-sensitive pen generating the pressure-sensitive data. A generation system for writing handwriting of multiple pressure-sensitive pens, characterized in that the generation method includes: A pairing table setting module, configured to obtain pen-in touch data and pressure-sensitive data of an active point, and record a touch point ID of the pen-in touch data of each of the active points in the pairing table corresponding to the pressure-sensitive data. The corresponding relationship of the pressure pen ID; A pen-in handwriting generating module, configured to generate, according to the time sequence, the first frame writing handwriting of all the active points according to the pen-in touch data and the pressure-sensitive data; A writing handwriting generating module is configured to, when receiving writing touch data, determine a first target pressure-sensitive pen corresponding to the writing touch data according to the pairing table, and according to the pressure-sensitive data of the first target pressure-sensitive pen Generating the intermediate frame writing handwriting with the writing touch data; The pen-up handwriting generating module is configured to determine a second target pressure-sensitive pen corresponding to the pen-up touch data according to the pairing table when receiving the pen-up touch data, and according to the second target pressure-sensitive pen The pressure-sensitive data and the pen-up touch data generate a last frame of writing handwriting. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the multi-pressure system according to any one of claims 1 to 7 is implemented. Steps of the method for generating the handwriting pen. An infrared touch screen writing component is characterized in that it includes: An infrared touch screen is used to periodically scan a preset area through an infrared receiving tube to generate pen-in touch data, and / or write touch data, and / or raise a pen to write a track; A pressure-sensitive pen for performing a writing operation on the infrared touch screen through a pressure-sensitive pen input terminal; wherein the pressure-sensitive pen writing terminal is provided with a pressure sensor for detecting pressure-sensitive data; Memory for storing computer programs; A processor respectively connected to the infrared touch screen and the pressure sensor is configured to execute the method for generating a plurality of pressure-sensitive pen writing handwritings according to any one of claims 1 to 7 when executing the computer program. step.

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