WO2022032559A1 - Touch-control input signal acquisition method and system, and infrared touch-control device - Google Patents

Abstract

A touch-control input signal acquisition method and system, and an infrared touch-control device. The method comprises: if a touch pen detects that a pen tip is pressed, detecting a pressure sensing value of the pen tip in real time to obtain pressure sensing value detection information, and sending same to a pressure sensing signal receiving and processing module; if an infrared touch screen detects that an infrared light path is blocked, transmitting infrared light path scanning information that contains the blocked infrared light path to a touch-control signal processing module; the touch-control signal processing module parsing the infrared light path scanning information to obtain touch-control point coordinates; the pressure sensing signal receiving and processing module parsing the pressure sensing value detection information to obtain a pressure sensing width value; and generating a touch-control input signal and outputting same to a signal switching switch and a control mainboard.

Description

Touch input signal acquisition method, system and infrared touch device technical field

The present invention relates to the technical field of touch devices, and in particular, to a method and system for acquiring a touch input signal, and an infrared touch device.

Background technique

With the increasing popularity of electronic products, electronic devices with touch screens are more and more popular. Users can perform touch operations on the touch screens to input touch input signals to the electronic devices and control the electronic devices. The touch operation can be realized by using a touch pen, and more refined touch operations can be performed on the infrared touch screen through the touch pen. For example, the touch pen can be used to write on the infrared touch screen to input handwriting. However, in the traditional touch input signal acquisition method. , the touch point coordinates of the touch pen are only obtained through the occlusion of the infrared light path in the infrared touch screen and output to other terminal devices. The obtained handwriting is generated by the change of the touch point coordinates, and the width of the handwriting at any position is equal, which cannot be true. Simulate the user's writing state. In order to solve the above problems, some devices are provided with a receiving end that separately receives the touch pen pressure sensitive signal. Since the touch pen pressure sensitive signal and the touch point coordinate signal are processed separately, the touch point coordinate signal is switched to multiple terminal devices. During the output process, the pressure-sensitive signal cannot be switched and output with the touch-point coordinate signal, which makes it difficult for the terminal device receiving the signal to receive the touch-point coordinate signal and the pressure-sensitive signal synchronously. Therefore, the touch input signal acquisition method in the prior art has the problem that high-quality touch input signals cannot be acquired and output synchronously.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a touch input signal acquisition method, system, and infrared touch device, aiming at the problem in the prior art that high-quality touch input signals cannot be acquired and output synchronously.

In a first aspect, an embodiment of the present invention provides a touch input signal acquisition method, which is applied to a touch input signal acquisition system. The touch input signal acquisition system includes an infrared touch screen, a touch pen, a signal switch, and a control motherboard. , the touch pen, the signal switch and the control board are all connected in communication with the infrared touch screen, and the infrared touch screen includes a touch signal processing module and a pressure-sensitive signal receiving and processing module, wherein the method includes:

If the touch pen detects that the pen tip is pressed, the pressure-sensitive value of the pen-tip is detected in real time to obtain pressure-sensitive value detection information and sent to the pressure-sensitive signal receiving and processing module;

If the infrared touch screen detects that the infrared light path is blocked, transmit infrared light path scanning information including the blocked infrared light path to the touch signal processing module;

The pressure-sensitive signal receiving and processing module receives the pressure-sensitive value detection information, and the touch signal processing module simultaneously receives the infrared optical path scanning information;

The touch signal processing module analyzes the infrared optical path scanning information according to a preset touch signal analysis rule to obtain the coordinates of the touch point;

The pressure-sensing signal receiving and processing module analyzes the pressure-sensing value detection information according to a preset pressure-sensing value analysis rule to obtain a pressure-sensing width value;

The infrared touch screen generates a touch input signal according to the coordinates of the touch point and the pressure-sensitive width value, and outputs the signal to the signal switch and the control main board at the same time.

In a second aspect, an embodiment of the present invention further provides a touch input signal acquisition system, the system includes an infrared touch screen, a touch pen, a signal switch and a control motherboard, the infrared touch screen includes a touch signal processing module, a pressure-sensitive signal A receiving processing module, a touch input signal output unit and a scanning information output unit, the touch pen includes a pressure sensitive value detection unit and a wireless transmission unit, wherein:

the pressure-sensing value detection unit, configured to perform real-time detection on the pressure-sensing value of the pen-tip to obtain pressure-sensing value detection information if the touch pen detects that the pen tip is pressed;

the wireless sending unit, configured to send to the pressure-sensitive signal receiving and processing module;

The scanning information output unit is configured to transmit infrared light path scanning information including the blocked infrared light path to the touch signal processing module if the infrared touch screen detects that the infrared light path is blocked;

The touch signal processing module is configured to receive the infrared light path scanning information and analyze the infrared light path scanning information according to a preset touch signal analysis rule to obtain touch point coordinates;

The pressure-sensing signal receiving and processing module is configured to receive the pressure-sensing value detection information and analyze the pressure-sensing value detection information according to a preset pressure-sensing value analysis rule to obtain a pressure-sensing width value;

The touch input signal output unit is configured to generate a touch input signal according to the coordinates of the touch point and the pressure-sensitive width value, and output the touch input signal to the signal switch and the control motherboard at the same time.

In a third aspect, an embodiment of the present invention further provides an infrared touch device, which includes an infrared touch screen, a touch pen, a control board and a device body, a first signal output interface, a second signal output interface, the signal switch and the The infrared touch screen is arranged on the main body of the device, the infrared touch screen includes a touch signal processing module and a pressure-sensitive signal receiving and processing module, the control board is arranged in the main body of the device, and the touch pen is arranged in the In the accommodating cavity of the main body of the device, the touch pen can be taken out from the accommodating cavity and a touch operation can be performed on the infrared touch screen to input corresponding touch input signals to the infrared touch screen, and the signals are switched. The switch is used to switch the touch input signal from the infrared touch screen to the first signal output interface or the second signal output interface for output, and the control motherboard is used to receive the touch input signal from the infrared touch screen to output The corresponding operation control is performed according to the touch input signal, and the infrared touch device is used to implement the touch input signal acquisition method described in the first aspect.

In a fourth aspect, an embodiment of the present invention further provides an infrared touch device, which includes an infrared touch screen and a touch pen, wherein the infrared touch screen includes a first memory, a first processor, and is stored on the first memory and can be accessed by a touch pen. A first computer program running on the first processor, the touch pen including a second memory, a second processor, and a first computer program stored on the second memory and executable on the second processor Two computer programs, wherein the first processor executes the first computer program and the second processor executes the second computer program to jointly implement the touch input signal acquisition method of the first aspect.

Embodiments of the present invention provide a touch input signal acquisition method, system, and infrared touch device. The method includes: if the touch pen detects that the pen tip is pressed, performing real-time detection on the pressure sensitivity value of the pen tip to obtain pressure sensitivity value detection information and Send it to the pressure-sensitive signal receiving and processing module; if the infrared touch screen detects that the infrared light path is blocked, it transmits the infrared light path scanning information including the blocked infrared light path to the touch signal processing module; the pressure-sensitive signal receiving and processing module receives the pressure-sensitive value detection The touch signal processing module synchronously receives the infrared optical path scanning information; the touch signal processing module analyzes the infrared optical path scanning information according to the preset touch signal analysis rules to obtain the coordinates of the touch point; the pressure-sensitive signal receiving and processing module The built-in pressure sensitivity value analysis rule analyzes the pressure sensitivity value detection information to obtain the pressure sensitivity value width value; the infrared touch screen generates the touch input signal according to the touch point coordinates and the pressure sensitivity value width value and outputs it to the signal switch and the control board at the same time. Through the above method, the pressure sensitive value detection information and the infrared optical path scanning information are received synchronously and integrated and processed, so that the two signals can be synchronized in time to improve the quality of the obtained touch input signal. The signal is uploaded to the signal switch and the control board at the same time to ensure the synchronous output of the touch input signal.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention, which are of great significance to the art For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a method for acquiring a touch input signal according to an embodiment of the present invention;

2 is a schematic diagram of a use state of a method for acquiring a touch input signal provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a sub-flow for acquiring a touch input signal according to an embodiment of the present invention;

4 is a schematic diagram of another sub-flow of the method for acquiring a touch input signal according to an embodiment of the present invention;

5 is a schematic diagram of another sub-flow of the method for acquiring a touch input signal according to an embodiment of the present invention;

6 is a schematic diagram of another sub-flow of a method for acquiring a touch input signal provided by an embodiment of the present invention;

7 is a schematic block diagram of a system for acquiring a touch input signal according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an infrared touch device provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of an application scenario of the method for acquiring a touch input signal provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It is to be understood that, when used in this specification and the appended claims, the terms "comprising" and "comprising" indicate the presence of the described features, integers, steps, operations, elements and/or components, but do not exclude one or The presence or addition of a number of other features, integers, steps, operations, elements, components, and/or sets thereof.

It is also to be understood that the terminology used in this specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural unless the context clearly dictates otherwise.

It should further be understood that, as used in this specification and the appended claims, the term "and/or" refers to and including any and all possible combinations of one or more of the associated listed items .

Please refer to FIG. 1 and FIG. 8 , FIG. 1 is a schematic flowchart of a method for acquiring a touch input signal provided by an embodiment of the present invention, and FIG. 8 is a schematic structural diagram of an infrared touch device provided by an embodiment of the present invention. The touch input signal acquisition method is applied to the touch input signal acquisition system 100. The touch input signal acquisition system 100 can be implemented as an infrared touch device, and the infrared touch device includes a touch pen 10, an infrared touch screen 20, The control board 30 (not shown in FIG. 8 ) and the device body 40 , the first signal output interface 51 , the second signal output interface 52 , the signal switch 53 and the infrared touch screen 20 are arranged on the device body 40 , the control board 30 is arranged in the main body 40 of the device, the touch pen 10 is arranged in the accommodating cavity 41 of the main body 40 of the device, and the touch pen 10 can be taken out from the accommodating cavity 41 and A touch operation is performed on the infrared touch screen 20 to input a corresponding touch input signal to the infrared touch screen 20, and the signal switch 53 is used to switch the touch input signal from the infrared touch screen 20 to the infrared touch screen 20. The first signal output interface 51 or the second signal output interface 52 outputs, and the control board 30 is used for receiving touch input signals from the infrared touch screen 20 to perform corresponding operation control according to the touch input signals.

FIG. 9 is a schematic diagram of an application scenario of the method for acquiring a touch input signal provided by an embodiment of the present invention. As shown in FIG. 9 , the first signal output interface 51 can be connected to the terminal device A by a USB connection, and the second signal output interface 52 It can be connected to the terminal device B by a USB connection. The pressure-sensitive signal receiving and processing module 22 receives the pressure-sensitive value detection information from the touch pen 10, and the touch signal processing module 21 synchronously receives the infrared optical path scanning information of the infrared touch screen and analyzes and analyzes it. The touch input signal is obtained by integration. The touch input signal is input to the switch 53 and the control board 30. At this time, the signal switch 53 can be manually controlled to switch and output the touch input signal to the terminal device A or the terminal device B; The pin (control signal output pin) sends a control signal to the signal switch 53, and the control signal switch 53 switches and outputs the touch input signal to terminal device A or terminal device B. Device A or device B can input HDMI signals to control Motherboard 30 .

Wherein, the infrared touch screen 20 can be a touch screen without a display function, and the infrared touch device can be a handwriting input board, a handwriting control board, etc.; it can also be an infrared touch display screen with a display function, and the infrared touch device can be a mobile phone , tablet computer, etc., the touch pen 10, the signal switch 53 and the control board 30 are all connected to the infrared touch screen 20 for communication, and the infrared touch screen 20 includes a touch signal processing module 21 and a pressure-sensitive signal receiving and processing module 22, specifically Yes, the touch pen 10 can establish a wireless communication connection with the pressure-sensitive signal receiving and processing module 22, and the method is executed by the application software installed in the infrared touch screen 20 and the touch pen 10 to realize the corresponding touch input signal acquisition method described above. The touch pen 10 can perform touch operations on the infrared touch screen 20, the pressure-sensitive signal receiving and processing module 22 receives the pressure-sensitive value detection information from the touch pen 10, and the touch signal processing module 21 simultaneously receives the infrared optical path scanning information of the infrared touch screen. And analyze and integrate to obtain the touch input signal, which can be simultaneously connected to two other terminals (terminal device A and terminal device B in FIG. 9 ) through the first signal output interface 51 and the second signal output interface 52, and the signal The switch 53 switches and controls the output of the touch input signal to other terminals, and the other terminals may be terminal devices such as notebook computers, desktop computers, smart TVs, large-screen displays, monitors, or interactive electronic whiteboards.

As shown in FIG. 1, the method includes steps S110-S160.

S110. If the touch pen detects that the pen tip is pressed, perform real-time detection on the pressure sensitivity value of the pen tip to obtain pressure sensitivity value detection information, and send the detection information to the pressure sensitivity signal receiving and processing module.

If the touch pen detects that the pen tip is pressed, the pressure-sensitive value of the pen-tip is detected in real time to obtain pressure-sensitive value detection information and sent to the pressure-sensitive signal receiving and processing module. Specifically, the touch pen includes a pen tip and a pressure sensor for sensing the pressure value of the pen tip. If the user writes with the touch pen, the front end of the pen tip is pressed and the rear end of the pen tip presses the pressure sensor, and the back end of the pen tip presses the pressure sensor. For the pressure sensor, the pressure sensitivity value of the pressure sensor is greater than zero at this time. If the pressure sensitivity value of the pressure sensor changes from zero to a value greater than zero, it means that the pen tip is pressed at this time, and the pressure sensitivity value of the pen tip can be affected. Real-time detection is performed to obtain pressure-sensitive value detection information, and the pressure-sensitive value detection information is a series of pressure-sensitive values collected according to the interval sequence.

Sending the pressure-sensitive value detection information to the pressure-sensitive signal receiving and processing module. Specifically, the touch pen is also provided with a communication module, which can establish a wireless communication connection with the pressure-sensitive signal receiving and processing module through the communication module, and send the pressure-sensitive value detection information to the pressure-sensitive signal receiving and processing module through the established wireless communication connection. , where the communication module can be a Bluetooth module

Step S110 may further include judging whether the pressure sensitivity value in the pressure sensitivity value detection information changes; if the pressure sensitivity value in the pressure sensitivity value detection information changes, sending the pressure sensitivity value detection information to the The pressure-sensitive signal receiving and processing module.

It is judged whether the pressure sensitivity value in the pressure sensitivity value detection information changes, and if there is a change, the pressure sensitivity value detection information is sent to the pressure sensitivity signal receiving and processing module. After the touch pen obtains the pressure sensitivity value detection information, it is necessary to judge whether the pressure sensitivity value has changed. If it changes, the stylus is used correctly at this time, and the pressure-sensitive value detection information can be sent to the pressure-sensitive signal receiving and processing module for further processing. Specifically, the pressure sensitivity values corresponding to two consecutive collection times in the pressure sensitivity value detection information can be obtained, and it can be judged whether the pressure sensitivity values of the two consecutive collection times are equal. If they are equal, it means that the pressure sensitivity values have not changed. It indicates that the pressure sensitivity value has changed.

S120. If the infrared touch screen detects that the infrared light path is blocked, transmit infrared light path scanning information including the blocked infrared light path to the touch signal processing module.

If the infrared touch screen detects that the infrared light path is blocked, the infrared light path scanning information including the blocked infrared light path is transmitted to the touch signal processing module. The infrared touch screen is a rectangular or square area. The infrared touch screen includes transmitting lamps and receiving lamps. The number of transmitting lamps and receiving lamps is equal. The receiving lamps are located on either side, left or right side of the upper or lower side of the infrared touch screen. On either side of the IR touch screen, the transmitting light and the receiving light are facing each other, and the user can use the hand, touch pen or other parts to perform touch operations on the infrared touch screen. FIG. 2 is a schematic diagram of a use state of the method for acquiring a touch input signal provided by an embodiment of the present invention. As shown in FIG. 2 , in this embodiment, the receiving lights are located on the upper and left sides of the infrared touch screen, and the transmitting lights are located directly opposite to the receiving lights. Right and underside of the pair. Figure 2 shows the working process of the infrared signal emitted by the lower side emitting lamp of the infrared touch screen to scan the longitudinal optical path. Taking the emitting lamp T9 as an example, the infrared signal emitted by the emitting lamp is received by the receiving lamp R9, and the receiving lamp R9 obtains the vertical The voltage value of the optical path V9, the infrared signal emitted by the emitting lamp is received by the receiving lamp R5, and the receiving lamp R5 obtains the voltage value of the inclined optical path L9.

According to the scanning rules, turn on the emitting lamps in sequence and obtain the received infrared voltage value of the receiving lamp corresponding to the lit emitting lamp, so as to obtain the voltage value of the scanned infrared light path, wherein the infrared light path may include a horizontal light path and a vertical light path, The horizontal light path includes horizontal light paths and inclined light paths, and the longitudinal light paths include vertical light paths and inclined light paths. When the user performs touch operation on the infrared touch screen, the infrared rays in the infrared light path covered by the touch point in the infrared touch screen will be blocked, and the receiving light corresponding to the blocked infrared light path cannot receive part of the infrared rays, resulting in the infrared light received by the receiving light. When the voltage value drops, the blocked infrared light path can be obtained through the change of the intensity of the infrared signal received by the lamp. Scan all infrared light paths included in the infrared touch screen once to obtain the scanning information of the infrared touch screen. By judging whether the voltage value of each receiving lamp in the scanning information is not less than the preset voltage threshold, it is possible to check whether the infrared light path is blocked. Judging, if there is at least one receiving lamp whose voltage value is less than the voltage threshold, obtain the judgment result that the infrared light path is blocked; otherwise, obtain the judgment result that the infrared light path is not blocked.

Sending infrared light path scanning information including the blocked infrared light path to the touch signal processing module. If the infrared touch screen detects that a certain infrared light path is blocked, the infrared light path scanning information including the blocked infrared light path is sent to the touch signal processing module. The infrared receiving lamp in the infrared touch screen can establish a wired communication connection with the touch signal processing module, and the infrared optical path scanning information of the infrared receiving lamp can be sent to the touch signal processing module through the wired communication connection.

Specifically, the step of transmitting the infrared light path scanning information including the blocked infrared light path to the touch signal processing module further includes S1210. S1210. Determine whether the blocked infrared light path matches the range of the pen tip according to a preset range of the pen tip; if the blocked infrared light path matches the range of the pen tip, execute the process that will include the blocked infrared light path The step of transmitting the scanning information of the infrared optical path to the touch signal processing module.

If the infrared light path in the infrared touch screen is blocked, the scanning information can be further analyzed to determine whether the blocked infrared light path in the scanning information matches the range of the pen tip. The preset range of the pen tip is an area range corresponding to the size of the pen tip.

In one embodiment, as shown in FIG. 3 , step S1210 includes sub-steps S1211 , S1212 , S1213 and S1214 .

S1211. Acquire a blocked infrared light path and an unblocked infrared light path adjacent to the blocked infrared light path; S1212. Determine the distance between the blocked infrared light path and the unblocked infrared light path. S1213, combine all the touch boundaries corresponding to the blocked infrared light paths to obtain a touch range; S1214, determine whether the touch range is included in the range of the pen tip, and obtain the blocked range The judgment result of whether the infrared light path matches the range of the pen tip.

Specifically, in the process of analyzing the scanning information, the blocked infrared light paths and an unblocked infrared light path that is closest and parallel to each blocked infrared light path can be obtained, and the middle line of the two infrared light paths can be obtained as the touch The touch range is obtained by combining all the touch boundaries, and it is judged whether the touch range is included in the range of the pen tip, so as to obtain the judgment result of whether the blocked infrared light path matches the range of the pen tip. The range of the pen tip can be slightly larger than the cross-sectional area of the pen tip. If the touch range is included in the range of the pen tip, it means that the user is using the touch pen to perform touch operations; if the touch range is not included in the range of the pen tip, it means that the user is not using Touch pen for touch operation.

S130. The pressure-sensitive signal receiving and processing module receives the pressure-sensitive value detection information, and the touch signal processing module synchronously receives the infrared optical path scanning information.

Each pressure sensitivity value in the pressure sensitivity value detection information is collected according to the sequence, that is, each pressure sensitivity value corresponds to a collection time, and the interval between collection times can be 10-60ms (milliseconds). The optical path scanning information includes the information obtained by scanning the infrared optical path of the infrared touch screen multiple times. Each scan of the infrared optical path corresponds to a scanning time, and the scanning time is the infrared voltage value received by the receiving lamp in the infrared touch screen. The time when the collection took place. Since the touch signal processing module and the pressure-sensitive signal receiving and processing module are both set in the infrared touch screen, the pressure-sensitive value detection information and the infrared optical path scanning information can be simultaneously received in real time through the pressure-sensitive signal receiving and processing module and the touch signal processing module. That is, the pressure-sensitive value detection information and the infrared optical path scanning information corresponding to the same collection time can be obtained through the pressure-sensitive signal receiving and processing module and the touch signal processing module, respectively, to ensure that the pressure-sensitive value detection information and the infrared optical path scanning information are in time. Keep it in sync to facilitate subsequent integrated output.

In addition, it can also judge whether the touch signal processing module and the pressure-sensitive signal receiving and processing module receive the pressure-sensitive value detection information and the infrared optical path scanning information at the same time. If only the pressure-sensitive value detection information is received, it means that the touch pen has not The touch operation is performed on the infrared touch screen, and the corresponding prompt information can be sent to the user at this time; if only the infrared light path scanning information is received, it indicates that the user is performing the touch operation without using the touch pen (for example, using a finger to touch control operation). Only when the pressure sensitive value detection information and the infrared optical path scanning information are received at the same time, the touch input signal is obtained by analyzing the pressure sensitive value detection information and the infrared optical path scanning information.

S140, the touch signal processing module analyzes the infrared optical path scanning information according to a preset touch signal analysis rule to obtain the coordinates of the touch point.

The touch signal analysis rule is the specific rule for analyzing the infrared light path scanning information. The coordinates of the touch point can be obtained by analyzing the infrared light path scanning information, that is, when the user uses a stylus to perform a touch operation on the infrared touch screen the center coordinates of .

In one embodiment, as shown in FIG. 4 , step S140 includes sub-steps S141 , S142 , S143 and S144 .

S141. Acquire a blocked infrared light path and an unblocked infrared light path adjacent to the blocked infrared light path in the infrared light path scanning information; S142, compare the blocked infrared light path with the unblocked infrared light path. Block the middle line between the infrared light paths as the touch boundary; S143, obtain the minimum circumscribed circles corresponding to all the touch boundaries according to the touch signal analysis rule; S144, obtain the coordinate position of the center of the minimum circumscribed circle as the corresponding coordinates of the touch point.

After further analysis of the blocked infrared light path in the infrared light path scanning information, the coordinate position of the touch operation of the touch pen can be accurately positioned. The analysis rule is the calculation rule for calculating the minimum circumscribed circle corresponding to the touch boundary. Through the analysis rule, the minimum circumscribed circle formed by all the touch boundaries can be calculated, and the touch point can be obtained by obtaining the coordinate position of the center of the minimum circumscribed circle in the infrared touch screen. The coordinates of the touch point, the coordinates of the touch point can be represented by (x, y).

S150. The pressure-sensing signal receiving and processing module analyzes the pressure-sensing value detection information according to a preset pressure-sensing value analysis rule to obtain a pressure-sensing width value.

The pressure-sensing value analysis rule is a specific rule for analyzing the pressure-sensing value detection information. The corresponding pressure-sensing width value can be obtained by analyzing the pressure-sensing value detection information, and the pressure-sensing width value can be used to simulate the user's use of a touch pen. The actual handwriting width when writing and other touch operations.

In one embodiment, as shown in FIG. 5 , step S150 includes sub-steps S151 , S152 , S153 and S154 .

S151. Determine whether the pressure-sensing value is within the pressure-sensing value interval; S152. If the pressure-sensing value is within the pressure-sensing value interval, obtain one corresponding to the pressure-sensing value in the width interval The width value is used as the pressure-sensitive width value; S153, if the pressure-sensitive value is less than the minimum value of the pressure-sensitive value interval, the minimum width value of the width interval is used as the pressure-sensitive width value; S154, if the pressure-sensitive value is The sensitivity value is greater than the maximum value of the pressure sensitivity value interval, and the maximum width value of the width interval is used as the pressure sensitivity width value.

Specifically, the pressure sensitivity value analysis rule includes a pressure sensitivity value interval and a width interval. The pressure sensitivity value interval is the interval information used to indicate the pressure range, such as [50mN, 1000mN], and the width interval is the interval used to indicate the width of the handwriting Information, such as [1px, 20px], the pressure sensitivity value interval and the width interval are interrelated, that is, each pressure sensitivity value in the pressure sensitivity value interval corresponds to a width value in the width interval. When obtaining the pressure-sensing width value, first determine whether the pressure-sensing value is within the pressure-sensing value range, and if the pressure-sensing value is within the pressure-sensing value range, obtain a width value corresponding to the pressure-sensing value as the pressure-sensing width value, For example, if the pressure sensitivity value is 100 mN, and a width value corresponding to the pressure sensitivity value is 2px (2-pixel width), the obtained pressure sensitivity width value is 2px. If the pressure sensitivity value is less than the minimum value of the pressure sensitivity value interval, take the minimum width value (1px) of the width interval as the pressure sensitivity width value; if the pressure sensitivity value is greater than the maximum value of the pressure sensitivity value interval, take the maximum width value of the width interval ( 20px) as the pressure-sensitive width value.

S160, the infrared touch screen generates a touch input signal according to the touch point coordinates and the pressure-sensing width value, and outputs the signal to the signal switch and the control mainboard at the same time.

In one embodiment, as shown in FIG. 6 , step S160 includes sub-steps S161 and S162.

S161. Acquire the touch point coordinates and the pressure-sensitive width value corresponding to each collection time, and use the touch point coordinates as a center point to generate a virtual handwriting corresponding to the pressure-sensitive width value as the touch input signal; S162, output the touch input signal to the signal switch and the control mainboard simultaneously.

Since the pressure-sensing signal receiving and processing module and the touch signal processing module receive the pressure-sensing value detection information and the infrared optical path scanning information synchronously in real time, the pressure-sensing value detection information and the infrared optical path scanning information at the same collection time can be directly obtained, and correspondingly analyzed Obtain a touch point coordinate and a pressure-sensitive width value at the same acquisition time, use the touch point coordinate as the center point, and use the corresponding pressure-sensitive width value as the handwriting width to generate a virtual handwriting point, The virtual handwriting obtained by smooth connection of virtual handwriting points is used as a touch input signal. Then the width of the virtual handwriting can change with the pressure of the user pressing the touch pen during the writing process, and because the pressure-sensitive signal receiving and processing module and the touch-sensitive signal processing module receive the pressure-sensitive value detection information and the infrared optical path scanning information synchronously, and integrate and integrate them. The processing ensures that the two signals can be synchronized in time, thereby improving the quality of the obtained touch input signal. The touch input signal including the pressure sensitive value detection information and the infrared optical path scanning information can be uploaded to the signal switch and the control board at the same time, which can ensure the synchronous output of the touch input signal. Specifically, the signal switch is used to switch the touch input signal from the infrared touch screen to the first signal output interface or the second signal output interface for output, which can make the switching output of the touch input signal more flexible , convenient, the first signal output interface or the second signal output interface can be connected to other terminal equipment (such as notebook computers, desktop computers, smart TVs, large-screen displays, monitors or interactive whiteboards and other terminal equipment) and touch The input signal is output, and the touch input signal is also synchronously transmitted to the control board (such as the Android control board), and the control board is used to receive the touch input signal and perform corresponding operation control (such as the Android operating system) according to the touch input signal. control accordingly).

A method for acquiring a touch input signal provided in an embodiment of the present invention includes: if the touch pen detects that the pen tip is pressed, performing real-time detection on the pressure sensitivity value of the pen tip to obtain pressure sensitivity value detection information and sending it to the pressure sensitivity signal receiving and processing module ; If the infrared touch screen detects that the infrared light path is blocked, it transmits the infrared light path scanning information including the blocked infrared light path to the touch signal processing module; the pressure-sensitive signal receiving and processing module receives the pressure-sensitive value detection information and the touch signal processing module synchronizes Receive infrared light path scanning information; the touch signal processing module analyzes the infrared light path scanning information according to the preset touch signal analysis rules to obtain the coordinates of the touch point; the pressure-sensitive signal receiving and processing module analyzes the The pressure-sensitive value detection information is analyzed to obtain a pressure-sensitive width value; the infrared touch screen generates a touch input signal according to the touch point coordinates and the pressure-sensitive width value, and outputs the signal to the signal switch and the control board at the same time. Through the above method, the pressure sensitive value detection information and the infrared optical path scanning information are received synchronously and integrated and processed, so that the two signals can be synchronized in time to improve the quality of the obtained touch input signal. The signal is uploaded to the signal switch and the control board at the same time to ensure the synchronous output of the touch input signal.

An embodiment of the present invention further provides a touch input signal acquisition system 100, and the touch input signal acquisition system 100 is configured to execute any embodiment of the aforementioned touch input signal acquisition method. Specifically, please refer to FIG. 7 , which is a schematic block diagram of a system for acquiring a touch input signal provided by an embodiment of the present invention. The touch input signal acquisition system 100 includes a touch pen 10 , an infrared touch screen 20 , a signal switch 53 and a control motherboard 30 .

As shown in FIG. 7 , the touch pen 10 includes a pressure-sensitive value detection unit 11 and a wireless transmission unit 12 , and the infrared touch screen 20 includes a touch signal processing module 21 , a pressure-sensitive signal receiving and processing module 22 , and a touch input signal output unit 23 . and scan information output unit 24 .

The pressure-sensitive value detection unit 11 is configured to perform real-time detection on the pressure-sensitive value of the pen-tip to obtain pressure-sensitive value detection information if the touch pen detects that the pen tip is pressed;

The wireless sending unit 12 is configured to send to the pressure-sensitive signal receiving and processing module;

The scanning information output unit 24 is configured to transmit infrared light path scanning information including the blocked infrared light path to the touch signal processing module if the infrared touch screen detects that the infrared light path is blocked;

The touch signal processing module 21 is configured to receive the infrared light path scanning information and analyze the infrared light path scanning information according to a preset touch signal analysis rule to obtain touch point coordinates;

The pressure-sensing signal receiving and processing module 22 is configured to receive the pressure-sensing value detection information and analyze the pressure-sensing value detection information according to a preset pressure-sensing value analysis rule to obtain a pressure-sensing width value;

The touch input signal output unit 23 is configured to generate a touch input signal according to the coordinates of the touch point and the pressure-sensing width value, and output the signal to the signal switch and the control mainboard at the same time.

The above touch input signal acquisition method is applied to the touch input signal acquisition system provided by the embodiment of the present invention. The method includes: if the touch pen detects that the pen tip is pressed, performing real-time detection on the pressure sensitivity value of the pen tip to obtain pressure sensitivity value detection information and send it to the pressure-sensitive signal receiving and processing module; if the infrared touch screen detects that the infrared light path is blocked, it transmits the infrared light path scanning information including the blocked infrared light path to the touch signal processing module; the pressure-sensitive signal receiving and processing module receives the pressure-sensitive value The detection information and the touch signal processing module synchronously receive the infrared light path scanning information; the touch signal processing module analyzes the infrared light path scanning information according to the preset touch signal analysis rules to obtain the coordinates of the touch point; the pressure-sensitive signal receiving and processing module according to The preset pressure-sensing value analysis rule analyzes the pressure-sensing value detection information to obtain the pressure-sensing width value; the infrared touch screen generates the touch input signal according to the touch point coordinates and the pressure-sensing width value, and outputs it to the signal switch and the control board at the same time. . Through the above method, the pressure sensitive value detection information and the infrared optical path scanning information are received synchronously and integrated and processed, so that the two signals can be synchronized in time to improve the quality of the obtained touch input signal. The signal is uploaded to the signal switch and the control board at the same time to ensure the synchronous output of the touch input signal.

In another embodiment of the present invention, an infrared touch device includes an infrared touch screen and a touch pen, wherein the infrared touch screen includes a first memory, a first processor, and is stored on the first memory and can be stored at any location. A first computer program running on the first processor, the touch pen including a second memory, a second processor, and a second computer stored on the second memory and executable on the second processor A program, wherein the first processor executes the first computer program and the second processor executes the second computer program to jointly implement the above-mentioned method for acquiring a touch input signal.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, for the specific working process of the above-described devices, devices and units, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here. Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. Interchangeability, the above description has generally described the components and steps of each example in terms of function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only logical function division. In actual implementation, there may be other division methods, or units with the same function may be grouped into one Units, such as multiple units or components, may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solutions in the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or a part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a computer can The read storage medium includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned computer-readable storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), magnetic disk or optical disk and other media that can store program codes.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalents within the technical scope disclosed by the present invention. Modifications or substitutions should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A touch input signal acquisition method, characterized in that the touch input signal acquisition method is applied to a touch input signal acquisition system, and the touch input signal acquisition system includes an infrared touch screen, a touch pen, a signal switch and a control The main board, the touch pen, the signal switch and the control main board are all connected in communication with the infrared touch screen, and the infrared touch screen includes a touch signal processing module and a pressure-sensitive signal receiving and processing module, and the touch input Signal acquisition methods include:

   If the touch pen detects that the pen tip is pressed, the pressure-sensitive value of the pen-tip is detected in real time to obtain pressure-sensitive value detection information and sent to the pressure-sensitive signal receiving and processing module;

   If the infrared touch screen detects that the infrared light path is blocked, transmit infrared light path scanning information including the blocked infrared light path to the touch signal processing module;

   The pressure-sensitive signal receiving and processing module receives the pressure-sensitive value detection information, and the touch signal processing module simultaneously receives the infrared optical path scanning information;

   The touch signal processing module analyzes the infrared optical path scanning information according to a preset touch signal analysis rule to obtain the coordinates of the touch point;

   The pressure-sensing signal receiving and processing module analyzes the pressure-sensing value detection information according to a preset pressure-sensing value analysis rule to obtain a pressure-sensing width value;

   The infrared touch screen generates a touch input signal according to the coordinates of the touch point and the pressure-sensitive width value, and outputs the signal to the signal switch and the control main board at the same time.
2. The method for acquiring a touch input signal according to claim 1, wherein the real-time detection of the pressure-sensitive value of the pen tip to obtain pressure-sensitive value detection information and send it to the pressure-sensitive signal receiving and processing module, comprising: :

   judging whether the pressure sensitivity value in the pressure sensitivity value detection information has changed;

   If the pressure-sensing value in the pressure-sensing value detection information changes, the pressure-sensing value detection information is sent to the pressure-sensing signal receiving and processing module.
3. The method for acquiring a touch input signal according to claim 1, wherein before transmitting the infrared light path scanning information including the blocked infrared light path to the touch signal processing module, the method further comprises:

   According to the preset range of the pen tip, determine whether the blocked infrared light path matches the range of the pen tip;

   If the blocked infrared light path matches the range of the pen tip, the step of transmitting the infrared light path scanning information including the blocked infrared light path to the touch signal processing module is performed.
4. The method for acquiring a touch input signal according to claim 1, wherein the touch input signal is generated according to the coordinates of the touch point and the pressure-sensitive width value, and is output to the signal switch and the signal switch at the same time. The control board described above, including:

   Obtain the touch point coordinates and the pressure-sensitive width value corresponding to each collection time, and use the touch point coordinates as a center point to generate a virtual handwriting corresponding to the pressure-sensitive width value as the touch input signal ;

   The touch input signal is simultaneously output to the signal switch and the control motherboard.
5. The method for acquiring a touch input signal according to claim 1, wherein the analyzing the infrared optical path scanning information according to a preset touch signal analysis rule to obtain the coordinates of the touch point, comprising:

   Obtaining a blocked infrared light path and an unblocked infrared light path adjacent to the blocked infrared light path in the infrared light path scanning information;

   Taking the middle line between the blocked infrared light path and the unblocked infrared light path as a touch boundary;

   Obtain the minimum circumscribed circles corresponding to all the touch boundaries according to the touch signal analysis rule;

   The coordinate position where the center of the minimum circumscribed circle is located is obtained as the corresponding touch point coordinates.
6. The method for acquiring a touch input signal according to claim 1, wherein the pressure sensitivity value analysis rule includes a pressure sensitivity value interval and a width interval, and the pressure sensitivity value analysis rule is based on a preset pressure sensitivity value analysis rule. The value detection information is parsed to obtain the pressure-sensitive width value, including:

   judging whether the pressure sensitivity value is within the pressure sensitivity value interval;

   If the pressure-sensing value is within the pressure-sensing value interval, acquiring a width value corresponding to the pressure-sensing value in the width interval as the pressure-sensing width value;

   If the pressure sensitivity value is smaller than the minimum value of the pressure sensitivity value interval, the minimum width value of the width interval is used as the pressure sensitivity width value;

   If the pressure sensitivity value is greater than the maximum value of the pressure sensitivity value interval, the maximum width value of the width interval is used as the pressure sensitivity width value.
7. The method for acquiring a touch input signal according to claim 3, wherein the determining whether the blocked infrared light path matches the range of the pen tip according to a preset range of the pen tip comprises;

   Acquiring a blocked infrared light path and an unblocked infrared light path adjacent to the blocked infrared light path;

   Taking the middle line between the blocked infrared light path and the unblocked infrared light path as the touch boundary;

   Combining the touch boundaries corresponding to all the blocked infrared light paths to obtain a touch range;

   It is determined whether the touch range is included in the range of the pen tip, and a determination result of whether the blocked infrared light path matches the range of the pen tip is obtained.
8. A touch input signal acquisition system, characterized in that, the touch input signal acquisition system includes an infrared touch screen, a touch pen, a signal switch and a control motherboard, and the infrared touch screen includes a touch signal processing module, a pressure-sensitive signal receiver a processing module, a touch input signal output unit and a scan information output unit, the touch pen includes a pressure sensitivity value detection unit and a wireless transmission unit;

   the pressure-sensing value detection unit, configured to perform real-time detection on the pressure-sensing value of the pen-tip to obtain pressure-sensing value detection information if the touch pen detects that the pen tip is pressed;

   the wireless sending unit, configured to send to the pressure-sensitive signal receiving and processing module;

   The scanning information output unit is configured to transmit infrared light path scanning information including the blocked infrared light path to the touch signal processing module if the infrared touch screen detects that the infrared light path is blocked;

   The touch signal processing module is configured to receive the infrared light path scanning information and analyze the infrared light path scanning information according to a preset touch signal analysis rule to obtain touch point coordinates;

   The pressure-sensing signal receiving and processing module is configured to receive the pressure-sensing value detection information and analyze the pressure-sensing value detection information according to a preset pressure-sensing value analysis rule to obtain a pressure-sensing width value;

   The touch input signal output unit is configured to generate a touch input signal according to the coordinates of the touch point and the pressure-sensitive width value, and output the touch input signal to the signal switch and the control motherboard at the same time.
9. An infrared touch device is characterized in that it comprises an infrared touch screen, a touch pen, a control board and a device main body, a first signal output interface, a second signal output interface, the signal switch and the infrared touch screen are arranged on the On the main body of the device, the infrared touch screen includes a touch signal processing module and a pressure-sensitive signal receiving and processing module, the control board is arranged in the main body of the device, and the touch pen is arranged in the accommodating cavity of the main body of the device, The touch pen can be taken out from the accommodating cavity and a touch operation can be performed on the infrared touch screen to input corresponding touch input signals to the infrared touch screen. The touch input signal of the touch screen is switched to the first signal output interface or the second signal output interface for output, and the control board is used to receive the touch input signal from the infrared touch screen to execute according to the touch input signal Corresponding operation control, the infrared touch device is used to implement the touch input signal acquisition method according to any one of claims 1 to 7 .
10. An infrared touch device, characterized in that it includes an infrared touch screen and a touch pen, the infrared touch screen includes a first memory, a first processor, and is stored on the first memory and can be accessed on the first processor a first computer program running, the touch pen including a second memory, a second processor, and a second computer program stored on the second memory and executable on the second processor, the first The processor executes the first computer program and the second processor executes the second computer program to jointly implement the touch input signal acquisition method according to any one of claims 1 to 7 .

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