CN117369668A - Infrared touch screen scanning method and device and infrared touch screen system - Google Patents
Infrared touch screen scanning method and device and infrared touch screen system Download PDFInfo
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- 238000004891 communication Methods 0.000 description 7
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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Abstract
The application relates to a scanning method and device of an infrared touch screen, the infrared touch screen, computer equipment and a computer readable storage medium; the method comprises the following steps: presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode, wherein the scanning period and the scanning direction are used for carrying out scanning control on the infrared touch screen; detecting that the interference signals transmitted by the transmitting lamps of the adjacent infrared touch screens received by the receiving lamps of the current infrared touch screens meet a first preset condition, entering a synchronous scanning mode, and adjusting the scanning period and the scanning direction of the current infrared touch screens to be preset values; and in the synchronous scanning process, adjusting the scanning starting time of the current infrared touch screen until the interference signal is lower than a preset threshold value. According to the technical scheme, the influence of mutual interference between two adjacent infrared touch screens used side by side to scan and identify can be avoided, the accuracy of scanning received signals is ensured, and the infrared touch screens can conduct accurate touch identification.
Description
Technical Field
The present disclosure relates to the field of touch technologies, and in particular, to a method and an apparatus for scanning an infrared touch screen, an infrared touch screen system, a computer device, and a computer readable storage medium.
Background
The infrared touch screen generally adopts an infrared touch frame to detect touch operation, each receiving lamp on the edge of the infrared touch frame is scanned to respectively receive infrared light emitted by the emitting lamp, and touch calculation is performed according to the shielding condition of the infrared light.
In some application scenarios, it is often desirable toTo use the infrared touch screen system by arranging a plurality of infrared touch screens side by side, as shown in fig. 1, fig. 1 is a schematic diagram of the infrared touch screen system by side, in the figure, two infrared touch screens are arranged side by side, and in the figure, it is assumed that the infrared touch screens (1) and the infrared touch screens (2) are respectively corresponding to each other, because the two are adjacent, the receiving lamp is scanned for one time in advance due to the scanning flow of the infrared touch frame, and then the number of points is calculated according to whether shielding exists after the scanning is completed, because the number of points calculated by each frame is not fixed, the scanning frame rate is lower when two are scanned in a certain range of adjacent positions, the infrared signals of the two adjacent infrared touch screens are easy to generate mutual interference due to different scanning frame rates, and the distance in the figure isdThe existence of the interference area in the range of the dashed line frame influences the accuracy of scanning the received signal, so that the infrared touch screen cannot accurately recognize the touch.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method and apparatus for scanning an infrared touch screen, an infrared touch screen system, a computer device, and a computer readable storage medium.
A scanning method of an infrared touch screen, comprising:
presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode, wherein the scanning period and the scanning direction are used for carrying out scanning control on the infrared touch screen;
detecting that the interference signals transmitted by the transmitting lamps of the adjacent infrared touch screens received by the receiving lamps of the current infrared touch screen meet a first preset condition, entering a synchronous scanning mode, and adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values;
and in the synchronous scanning process, adjusting the scanning starting time of the current infrared touch screen until the interference signal is lower than a preset threshold value.
A scanning device for an infrared touch screen, comprising:
the setting module is used for presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode and carrying out scanning control on the infrared touch screen;
the detection module is used for detecting that the interference signals transmitted by the transmitting lamps of the adjacent infrared touch screens received by the receiving lamps of the current infrared touch screen meet a first preset condition, entering a synchronous scanning mode and adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values;
and the scanning module is used for adjusting the scanning starting time of the current infrared touch screen in the synchronous scanning process until the interference signal is lower than a preset threshold value.
An infrared touch screen system, comprising: the first infrared touch screen and the second infrared touch screen are used side by side;
the first infrared touch screen and the second infrared touch screen enter a synchronous scanning mode at the same time;
the first infrared touch screen adjusts the scanning starting time, and the second infrared touch screen keeps the scanning starting time unchanged;
stopping adjusting the scanning starting time when the interference signal detected by the first infrared touch screen is lower than a preset threshold value;
the first infrared touch screen and the second infrared touch screen are configured to execute the steps of the scanning method of the infrared touch screen.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the method of scanning an infrared touch screen when the computer program is executed.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method of scanning an infrared touch screen.
The scanning method and device of the infrared touch screen, the infrared touch screen system, the computer equipment and the computer readable storage medium; in a side-by-side use scene of the infrared touch screen, firstly presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode, detecting that an interference signal emitted by a transmitting lamp of the adjacent infrared touch screen is received by a receiving lamp of the current infrared touch screen when the infrared touch screen is scanned and meets a first preset condition, entering a synchronous scanning mode, and adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values; and adjusting the scanning starting time of the current infrared touch screen until the interference signal is lower than a preset threshold value. According to the technical scheme, after adjustment, the interference signals in the received signals of the current infrared touch screen and the adjacent infrared touch screens are lower than the preset threshold value when the current infrared touch screen and the adjacent infrared touch screens are scanned at any time, so that the influence of mutual interference generated between the two adjacent infrared touch screens used side by side on scanning identification can be avoided, the accuracy of the received signals is ensured, and the infrared touch screens used side by side can be used for accurate touch identification.
Drawings
FIG. 1 is a schematic diagram of a side-by-side infrared touch screen system
FIG. 2 is a schematic diagram of an exemplary infrared touch frame;
FIG. 3 is a schematic scanning view of an example;
FIG. 4 is a flow chart of a method of scanning an infrared touch screen in accordance with one embodiment;
FIG. 5 is a flow chart of an example preset scan period;
FIG. 6 is a schematic diagram of the same scan direction for one example;
FIG. 7 is a flowchart of a scanning algorithm for an example infrared touch screen;
FIG. 8 is a schematic diagram of a scanning device structure of an infrared touch screen according to an embodiment;
FIG. 9 is a schematic diagram of an exemplary computer device architecture.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
For the application scene of the scanning method of the infrared touch screen, the screen of the infrared touch screenFIG. 2 is a schematic diagram of an example infrared touch frame, in which an array of transmitting lamps and an array of receiving lamps, in which a transmitting lamp T, are arranged 1 、T 2 、……T n Receiving lamp R 1 、R 2 、……R m The method comprises the steps of carrying out a first treatment on the surface of the The transmitting lamp array and the receiving lamp array are connected with a control module, wherein the control module can generally comprise a control module and related signal processing circuits; when scanning, the control module connected with the infrared touch frame controls the emitting lamp to emit infrared light, the infrared light is received by the receiving lamp, and the positioning position is calculated by shielding light in the receiving lamp. As shown in FIG. 1, when two infrared touch screens are used side by side, the adjacent areas are separated by a distance ofdThus, when the infrared touch frames of two adjacent infrared touch screens are scanned, the distance between the two scanning positions is smaller thandAnd interference signals can be generated between the infrared touch recognition devices to influence the infrared touch recognition accuracy.
In order to eliminate the influence of the interference signals, the scanning method of the control module connected with the infrared touch frame of the infrared touch screen is improved, and the two synchronously scanned infrared touch screens (1) and (2) shown in fig. 1 are taken as examples, so that the current infrared touch screen refers to one infrared touch screen, and the adjacent infrared touch screen refers to the other infrared touch screen for convenience of description. Aiming at the current infrared touch screen and the adjacent infrared touch screen, any one transmitting lamp tube on the current infrared touch screen can not generate interference signals in the receiving signals of the receiving lamp tubes on the adjacent infrared touch screen at the same time when the transmitting lamp tube is controlled to transmit; as in fig. 2, each of the transmitting and receiving light pipes on the current infrared touch screen and the adjacent infrared touch screen has its number on the infrared touch frame.
Referring to fig. 3, fig. 3 is a schematic diagram of an example of scanning, which can determine that when the current infrared touch screen controls any numbered transmitting lamp to transmit an infrared signal, the corresponding infrared touch screen has a coverage area of an interference area, a state of frequent up-down oscillation is generated when the receiving lamp scans at the same time in the coverage area of the interference area, and an interference signal appears in the receiving signal.
Therefore, the two adjacent infrared touch screens are provided with the same scanning direction and scanning period, and when in synchronous scanning, the scanning starting time of the two infrared touch screens is adjusted, so that the scanning positions of the two infrared touch screens at the same time keep a certain distance, and signal interference between the adjacent infrared touch screens is avoided.
A method for scanning an infrared touch screen of base Yu Benshen, referring to fig. 4, fig. 4 is a flowchart of a method for scanning an infrared touch screen of one embodiment, which may be performed by a control module as shown in fig. 2, comprising the steps of:
step S11, presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screens are in a synchronous scanning mode, and performing scanning control on the infrared touch screens.
In order to eliminate interference signals in the synchronous scanning mode, a synchronous scanning mode is preset on the infrared touch screen, and a consistent scanning direction and a scanning period of the current infrared touch screen and the adjacent infrared touch screen are set, so that when the current infrared touch screen and the adjacent infrared touch screen scan at the same moment, the scanned receiving lamps are not in the coverage range of an interference area, and the interference signals cannot appear in the receiving signals.
In one embodiment, the scan period in the synchronous scan mode includes a scan period and a non-scan period; wherein the scanning time period is the time of scanning the receiving lamp, and the non-scanning time period is the waiting time.
Because the original scanning periods of different infrared touch screens are different, after the scanning periods in the synchronous scanning mode are unified, setting a scanning time period as the time for scanning the receiving lamp and setting a non-scanning time period as the waiting time; for example, for an infrared touch screen, the scanning period is 10ms, the scanning period is 7ms, and the non-scanning period is 3ms.
In one embodiment, referring to fig. 5, fig. 5 is a flowchart of an exemplary preset scan period, which may specifically include the following steps:
s101, presetting a synchronous scanning mode, and setting the scanning directions of the current infrared touch screen and the adjacent infrared touch screens to be consistent.
S102, acquiring a first scanning frame rate of the current infrared touch screen and a second scanning frame rate of an adjacent infrared touch screen.
For example, assume that the frame rate of the current infrared touch screen is 7 ms/frame and the frame rate of the adjacent infrared touch screen is 10 ms/frame.
And S103, determining the same scanning period of the current infrared touch screen and the adjacent infrared touch screen according to the first scanning frame rate and the second scanning frame rate.
Specifically, by setting the same scanning period and taking a low frame rate as the synchronization period, if the infrared touch screen defaults to scan at a faster frame rate, the infrared touch screen can wait for the arrival of a periodic signal after one frame of scanning is finished, so that the scanning synchronization can be ensured.
As shown in fig. 6, fig. 6 is a schematic view of the same scanning direction for one example; when the infrared touch screen (1) and the infrared touch screen (2) scan in the same direction, if the two infrared touch screens take the same scanning period at the moment, if the receiving lamp scanned by the current infrared touch screen is not in the interference area, the receiving lamp scanned at the same moment can be prevented from being in the interference area, and interference signals in the receiving signals are prevented from being generated.
Step S12, detecting that the interference signals transmitted by the transmitting lamps of the adjacent infrared touch screens received by the receiving lamps of the current infrared touch screen meet a first preset condition, entering a synchronous scanning mode, and adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values.
In this step, the following may be specifically included:
s201, in the normal scanning process, when the receiving lamp of the current infrared touch screen is detected to receive the interference signal emitted by the emitting lamp of the adjacent infrared touch screen and meets a first preset condition, triggering to enter a synchronous scanning mode.
S202, adjusting the scanning direction and the scanning period of the current infrared touch screen consistent with those of the adjacent infrared touch screens; and synchronously scanning the receiving lamps of the current infrared touch screen according to the set scanning starting time, the scanning direction and the scanning period, wherein the receiving lamps are consistent with the adjacent infrared touch screens.
For example, when the infrared touch screen (1) and the infrared touch screen (2) are scanned side by side, detecting that a receiving lamp of the infrared touch screen (1) receives an interference signal emitted by a transmitting lamp of the infrared touch screen (2), and if the received interference signal meets a first preset condition, namely, when the infrared touch screen (1) and the infrared touch screen (2) are scanned to adjacent edge positions, the received interference signal meets a certain condition; and controlling the infrared touch screen to start a synchronous scanning mode, adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values, and performing scanning control on the current infrared touch screen (1) according to the preset scanning period and the scanning direction, namely scanning the receiving lamp of the current infrared touch screen according to the set scanning starting time, the scanning direction and the scanning period in the synchronous scanning mode.
In one embodiment, as described in the first preset condition in the above step, it may be measured whether a state of frequent up-down oscillation occurs in the received signal of the current infrared touch screen, and if the state of frequent up-down oscillation occurs, the received interference signal is considered to satisfy the first preset condition, that is, it is determined that the infrared touch screen (1) and the infrared touch screen (2) have side-by-side scanning interference.
And step S13, in the synchronous scanning process, adjusting the scanning start time of the current infrared touch screen until the interference signal is lower than a preset threshold value.
In the step, if the current infrared touch screen and the adjacent infrared touch screen are in side-by-side scanning interference, an interference elimination processing flow is started in synchronous scanning, the influence of interference signals is reduced by adjusting the scanning starting time of the current infrared touch screen, after the scanning starting time is adjusted, when the interference signals are lower than a preset threshold, the preset threshold is a threshold which does not generate side-by-side scanning interference, and when the infrared touch screen reaches a stable state, the interference signals received by the infrared touch screen cannot influence the infrared touch screen to perform normal touch recognition.
In the above scheme, after the interference signal is controlled to the preset threshold, the side-by-side scanning interference is eliminated, the current infrared touch screen and the adjacent infrared touch screen control the transmitting lamp tube to transmit and the receiving lamp to scan according to the preset scanning period, and the accurate infrared receiving signal can be obtained under the condition that the current infrared touch screen and the adjacent infrared touch screen are mutually independent.
According to the technical scheme of the embodiments, the defect that the infrared signals between two adjacent infrared touch screens used side by side are mutually interfered and cannot be scanned accurately can be avoided, the accuracy of scanning received signals is ensured, and the infrared touch screens can be used for carrying out accurate touch recognition.
For the sake of better clarity of the technical solutions of the present application, further embodiments are described below with reference to the accompanying drawings.
In one embodiment, to achieve synchronization of the reference of the scan start times and the scan periods of two adjacent infrared touch screens, a synchronized timer may be employed to provide time information.
Accordingly, a first timer and a second timer which are synchronous are respectively configured in the current infrared touch screen and the adjacent infrared touch screen; the current infrared touch screen can acquire first time information from the first timer, and the adjacent infrared touch screen acquires second time information from the second timer. The current infrared touch screen can determine the scanning starting time and the scanning period used according to the first time information; the adjacent infrared touch screen can determine the scanning starting time and the scanning period used according to the second time information.
Because the two infrared touch screens are operated independently of each other and the synchronous timer is utilized to provide time information of the current infrared touch screen and the adjacent infrared touch screen, the current infrared touch screen and the adjacent infrared touch screen can be ensured to be synchronous in each scanning period.
In one embodiment, in consideration of the requirement of calibrating the synchronous timer in application, a data interaction channel between the current infrared touch screen and the adjacent infrared touch screen can be established, and then the first timer and the second timer are synchronized according to the data interaction channel. For the data interaction channel, a wired mode, such as an SP interface mode, an I2C interface mode, etc., may be used for communication, and in addition, the current infrared touch screen may also be used for communication with an infrared remote controller of an adjacent infrared touch screen to perform synchronization of the timer.
According to the technical scheme of the embodiment, the timer counting is completed by adopting a mode of fixing the scanning period, the scanning period is fixed and is not influenced by point calculation in each frame of scanning, and the interference areas of the two infrared touch screens can be just staggered.
For example, the current infrared touch screen actually completes all one-frame scanning in 7ms, the adjacent infrared touch screen actually completes all one-frame scanning in 10ms, the scanning period set by two timers is 10ms, and the fault tolerance range is 3ms; the current infrared touch screen and the adjacent infrared touch screen can normally stagger the interference area within 3ms.
In one embodiment, because the amount of infrared data collected during scanning of the current infrared touch screen or the adjacent infrared touch screen is different, the number of points to be calculated in each frame is also different, and an interrupt mechanism is further designed to avoid that the current infrared touch screen and the adjacent infrared touch screen are out of synchronization in the scanning process.
Accordingly, in the scanning period, when the scanning process of the current infrared touch screen or the adjacent infrared touch screen is not completed, the scanning operation of the current scanning period is interrupted, the corresponding infrared receiving signals are discarded, and the next scanning period is entered for continuous scanning; specifically, if the number of calculation points is too large in one scanning period, and the scanning process cannot be completed, the current scanning operation can be interrupted, the next scanning period can be restarted, and the scanning data of the next frame can be acquired.
According to the technical scheme of the embodiment, the synchronization is ensured through the interrupt mechanism, the scanning starting time is not controlled by calculating the number of points, and the time synchronization of the current infrared touch screen or the adjacent infrared touch screens can be ensured. The current infrared touch screen or the adjacent infrared touch screen executes a flow on the algorithm, as shown in fig. 7, fig. 7 is a flowchart of a scanning algorithm of an example infrared touch screen, as shown in the diagram, after an infrared touch frame of the infrared touch screen is powered on, scanning one frame of data is started according to the count of a timer, the corresponding point number is calculated after one frame of scanning is completed, meanwhile, the counting of the timer is waited, and after the next scanning period is started, the scanning of the next scanning period is started.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a scanning device of the infrared touch screen for realizing the above related scanning method of the infrared touch screen. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the scanning device for one or more infrared touch screens provided below may be referred to the limitation of the scanning method for the infrared touch screen hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 8, fig. 8 is a schematic structural diagram of a scanning device of an infrared touch screen according to one embodiment, including:
the setting module 11 is used for presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode, and is used for carrying out scanning control on the infrared touch screen;
the detection module 12 is configured to detect that an interference signal emitted by a transmitting lamp of the current infrared touch screen and received by a receiving lamp of the adjacent infrared touch screen meets a first preset condition, enter a synchronous scanning mode, and adjust a scanning period and a scanning direction of the current infrared touch screen to preset values;
and the scanning module 13 is used for adjusting the scanning starting time of the current infrared touch screen in the synchronous scanning process until the interference signal is lower than a preset threshold value.
The above-mentioned various modules in the scanning device of the infrared touch screen may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or independent of the processor, or may be stored in software in a memory, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, the present application further provides an infrared touch screen system, as in fig. 1 to 6, comprising: the first infrared touch screen and the second infrared touch screen are used side by side; the first infrared touch screen and the second infrared touch screen are configured to perform the steps of the method of scanning an infrared touch screen of any of the embodiments described above.
In use, the first infrared touch screen and the second infrared touch screen enter a synchronous scanning mode at the same time; the first infrared touch screen adjusts the scanning starting time, and the second infrared touch screen keeps the scanning starting time unchanged; and stopping adjusting the scanning starting time when the interference signal detected by the first infrared touch screen is lower than a preset threshold value.
After the scanning starting time is adjusted, when the first infrared touch screen and the second infrared touch screen reach a stable state, interference signals received by the infrared touch screens cannot influence the normal touch recognition of the infrared touch screens.
According to the infrared touch screen system, when the adjacent first infrared touch screen and the second infrared touch screen scan at any moment, the interference signals in the received signals are lower than the preset threshold, so that the influence of mutual interference between the two adjacent infrared touch screens used side by side on scanning identification can be avoided, the accuracy of the received signals is ensured, and the infrared touch screens used side by side can perform accurate touch identification.
In an embodiment, the present application further provides a computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor performs the steps of the method of scanning an infrared touch screen of any of the above embodiments. With reference to fig. 9, fig. 9 is a schematic diagram of an exemplary computer device architecture that may include a processor, memory, communication interface, etc., coupled via a system bus. The processor of the computer device is configured to provide computing and control capabilities, where the memory includes a nonvolatile storage medium, and an internal memory, where the nonvolatile storage medium stores an operating system and a computer program, and the internal memory provides an environment for the operating system and the computer program in the nonvolatile storage medium to run, and the communication interface may be configured to perform wired or wireless communication with an external device, where the wireless communication may be implemented by WIFI, a mobile cellular network, NFC (near field communication), or other technologies, and the computer program when executed by the processor implements the steps of the method for scanning an infrared touch screen in any of the above embodiments.
It will be appreciated by those skilled in the art that the structures shown in the figures are block diagrams of only some of the structures associated with the present application and are not limiting of the control modules to which the present application may be applied, and that a particular control module may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, the present application also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto. The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (11)
1. A method for scanning an infrared touch screen, comprising:
presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode, wherein the scanning period and the scanning direction are used for carrying out scanning control on the infrared touch screen;
detecting that the interference signals transmitted by the transmitting lamps of the adjacent infrared touch screens received by the receiving lamps of the current infrared touch screen meet a first preset condition, entering a synchronous scanning mode, and adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values;
and in the synchronous scanning process, adjusting the scanning starting time of the current infrared touch screen until the interference signal is lower than a preset threshold value.
2. The method of claim 1, wherein the scanning period in the synchronous scanning mode includes a scanning period and a non-scanning period; the scanning time period is the time for scanning the receiving lamp, and the non-scanning time period is the waiting time.
3. The method for scanning an infrared touch screen according to claim 1, wherein the preset current infrared touch screen and the adjacent infrared touch screen have a consistent scanning period and scanning direction when in a synchronous scanning mode, and the method comprises the following steps:
presetting a synchronous scanning mode, and setting the scanning directions of the current infrared touch screen and the adjacent infrared touch screens to be consistent;
acquiring a first scanning frame rate of the current infrared touch screen and a second scanning frame rate of an adjacent infrared touch screen;
and determining the same scanning period of the current infrared touch screen and the adjacent infrared touch screen according to the first scanning frame rate and the second scanning frame rate.
4. The method for scanning an infrared touch screen according to claim 3, wherein the detecting that the interference signal emitted by the emitting lamp of the adjacent infrared touch screen received by the receiving lamp of the current infrared touch screen satisfies a first preset condition, entering a synchronous scanning mode, and adjusting the scanning period and the scanning direction of the current infrared touch screen to preset values comprises:
in the normal scanning process, triggering to enter a synchronous scanning mode when detecting that an interference signal emitted by a transmitting lamp of a current infrared touch screen receives from a transmitting lamp of an adjacent infrared touch screen meets a first preset condition;
adjusting the scanning direction and the scanning period of the current infrared touch screen consistent with those of the adjacent infrared touch screens; and synchronously scanning the receiving lamps of the current infrared touch screen according to the set scanning starting time, the scanning direction and the scanning period, wherein the receiving lamps are consistent with the adjacent infrared touch screens.
5. The method of scanning an infrared touch screen as in claim 4, further comprising:
and in the scanning period, when the fact that the scanning process of the current infrared touch screen is not finished is detected, interrupting the scanning operation of the current scanning period, discarding the corresponding infrared receiving signal, and entering the next scanning period to continue scanning.
6. The method of scanning an infrared touch screen as in claim 4, further comprising:
reading first time information from a first timer configured in a current infrared touch screen; the adjacent infrared touch screens are provided with second timers which are synchronous with the first timers;
determining the scanning starting time and the scanning period used by the current infrared touch screen according to the first time information; the adjacent infrared touch screen acquires the scanning start time and the scanning period used according to the second time information read from the second timer.
7. The method of scanning an infrared touch screen of claim 6, further comprising:
and establishing a data interaction channel between the current infrared touch screen and the adjacent infrared touch screen, and synchronizing the first timer and the second timer according to the data interaction channel.
8. A scanning device for an infrared touch screen, comprising:
the setting module is used for presetting a consistent scanning period and scanning direction when the current infrared touch screen and the adjacent infrared touch screen are in a synchronous scanning mode and carrying out scanning control on the infrared touch screen;
the detection module is used for detecting that the interference signals transmitted by the transmitting lamps of the adjacent infrared touch screens received by the receiving lamps of the current infrared touch screen meet a first preset condition, entering a synchronous scanning mode and adjusting the scanning period and the scanning direction of the current infrared touch screen to be preset values;
and the scanning module is used for adjusting the scanning starting time of the current infrared touch screen in the synchronous scanning process until the interference signal is lower than a preset threshold value.
9. An infrared touch screen system, comprising: the first infrared touch screen and the second infrared touch screen are used side by side;
the first infrared touch screen and the second infrared touch screen enter a synchronous scanning mode at the same time;
the first infrared touch screen adjusts the scanning starting time, and the second infrared touch screen keeps the scanning starting time unchanged;
stopping adjusting the scanning starting time when the interference signal detected by the first infrared touch screen is lower than a preset threshold value;
the first and second infrared touch screens are configured to perform the steps of the method of scanning an infrared touch screen of any one of claims 1 to 7.
10. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of scanning an infrared touch screen as claimed in any one of claims 1 to 7.
11. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the scanning method of an infrared touch screen as claimed in any one of claims 1 to 7.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106055177A (en) * | 2016-07-04 | 2016-10-26 | 青岛海信电器股份有限公司 | Scanning method and device of infrared touch screen |
| CN106557209A (en) * | 2016-10-28 | 2017-04-05 | 青岛海信电器股份有限公司 | The processing method of infrared touch panel touching signals, device and terminal device |
| CN116483224A (en) * | 2022-01-14 | 2023-07-25 | 广州众远智慧科技有限公司 | Control method of infrared touch device and infrared touch system |
| CN116860125A (en) * | 2023-08-01 | 2023-10-10 | 广州众远智慧科技有限公司 | Processing method and device of infrared touch scanning data and infrared touch equipment |
-
2023
- 2023-11-20 CN CN202311546724.1A patent/CN117369668A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106055177A (en) * | 2016-07-04 | 2016-10-26 | 青岛海信电器股份有限公司 | Scanning method and device of infrared touch screen |
| CN106557209A (en) * | 2016-10-28 | 2017-04-05 | 青岛海信电器股份有限公司 | The processing method of infrared touch panel touching signals, device and terminal device |
| CN116483224A (en) * | 2022-01-14 | 2023-07-25 | 广州众远智慧科技有限公司 | Control method of infrared touch device and infrared touch system |
| CN116860125A (en) * | 2023-08-01 | 2023-10-10 | 广州众远智慧科技有限公司 | Processing method and device of infrared touch scanning data and infrared touch equipment |
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