WO2023206496A1 - 触控系统及触控定位系统 - Google Patents

触控系统及触控定位系统 Download PDF

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Publication number
WO2023206496A1
WO2023206496A1 PCT/CN2022/090605 CN2022090605W WO2023206496A1 WO 2023206496 A1 WO2023206496 A1 WO 2023206496A1 CN 2022090605 W CN2022090605 W CN 2022090605W WO 2023206496 A1 WO2023206496 A1 WO 2023206496A1
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WIPO (PCT)
Prior art keywords
information
display
touch
positioning
signal
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PCT/CN2022/090605
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English (en)
French (fr)
Inventor
房德利
时晓东
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京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2022/090605 priority Critical patent/WO2023206496A1/zh
Priority to CN202280001030.7A priority patent/CN117321551A/zh
Publication of WO2023206496A1 publication Critical patent/WO2023206496A1/zh

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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

Definitions

  • the present disclosure relates to the field of touch technology, and specifically to a touch system and a touch positioning system.
  • the purpose of this disclosure is to provide a touch system and a touch positioning system.
  • a touch system including:
  • a plurality of information collectors used to be fixed on the outer surface of the display, and each of the information collectors is used to collect positioning information when performing a touch operation on the display;
  • An algorithm module is communicatively connected to a plurality of information collectors, and is used to obtain a plurality of positioning information, and determine the position information when a touch operation is performed on the display based on the plurality of positioning information.
  • the information collector is an optical sensor, and the positioning information includes optical positioning information
  • the optical sensor is used to collect optical positioning information and transmit it to the algorithm module.
  • the algorithm module is used to determine the position information based on a plurality of the optical positioning information.
  • the touch system further includes a stylus, the stylus includes a controller and a signal transmitter, and the positioning information includes a positioning signal;
  • the controller is electrically connected to the signal transmitter.
  • the controller is used to control the signal transmitter to transmit a positioning signal when the stylus touches the display.
  • the information collector is a signal receiver, so The signal receiver is used to receive the positioning signal and transmit it to the algorithm module.
  • the algorithm module is used to determine the position information according to the signal attenuation strength of a plurality of the positioning signals.
  • the operating frequency band of the information transmitter and the signal receiver is the same, and is greater than or equal to 2.4 GHz and less than or equal to 2.4835 GHz.
  • the stylus further includes a control switch
  • the control switch is electrically connected to the controller and the signal transmitter respectively.
  • the control switch can be kept in a conductive state when the stylus touches the display.
  • the controller is used to control the When the switch is turned on, the signal transmitter is controlled to transmit a positioning signal.
  • the stylus includes a pen body, and the pen tip position of the pen body has a through hole;
  • the control switch is a pressure sensing switch and has a pressure sensing end.
  • the pressure sensing switch is located inside the pen body, and at least part of the pressure sensing end extends out of the through hole.
  • the algorithm module is configured to:
  • the touch system includes a processor, and the processor includes the algorithm module.
  • a touch positioning system includes:
  • a plurality of information collectors each information collector is used to be fixedly connected to the display, and are all communicatively connected to the first processor;
  • the information collector is used to collect positioning information when performing a touch operation on the display.
  • the first processor includes an algorithm module.
  • the algorithm module is used to obtain a plurality of the positioning information and calculate the positioning information according to a plurality of the positioning information.
  • the positioning information determines the position information of the display when it is touched.
  • the touch positioning system includes a display
  • the display includes the first processor, and the first processor is used to control the display to perform corresponding operations according to the location information.
  • the touch positioning system includes a display
  • the display includes a second processor, the second processor is communicatively connected with the first processor, and the second processor is used to obtain the position information to control the display to perform corresponding operations.
  • the first processor is further configured to determine at least one of the position information and one-to-one corresponding at least one time information based on a plurality of the positioning information, so
  • the second processor is configured to obtain at least one of the position information and at least one of the time information, and control the display to perform corresponding operations based on at least one of the position information and at least one of the time information.
  • the display is rectangular, and the touch positioning system includes two of the information collectors;
  • the two information collectors are fixed at intervals on the same side of the display, and at least one of the two information collectors is located at a corner of the display.
  • the touch positioning system includes three or more information collectors, and the connection between the locations of the multiple information collectors can surround into polygon.
  • the display includes a display panel and a frame covering an edge of the display panel;
  • a plurality of information collectors are fixed on the outer wall of the frame, and the collection end of each information collector protrudes from the display surface of the display panel.
  • the display includes a display panel, and a plurality of the information collectors are fixed on the edge of the display surface of the display panel.
  • the information collector is an optical sensor, and the positioning information includes optical positioning information
  • the optical sensor is used to collect optical positioning information and transmit it to the algorithm module.
  • the algorithm module is used to determine the position information based on a plurality of the optical positioning information.
  • the touch system further includes a stylus, the stylus includes a controller and a signal transmitter, and the positioning information includes a positioning signal;
  • the controller is electrically connected to the signal transmitter.
  • the controller is used to control the signal transmitter to emit a positioning signal when the stylus touches the display.
  • the information collector is used to collect the positioning signal. , and transmitted to the algorithm module, where the algorithm module is used to determine the location information based on the signal attenuation strengths of multiple positioning signals.
  • the operating frequency band of the information transmitter and the signal receiver is the same, and is greater than or equal to 2.4 GHz and less than or equal to 2.4835 GHz.
  • the display further includes a discharge circuit, and the discharge circuit is used to electrically connect with the stylus to charge the stylus.
  • FIG. 1 is a schematic structural diagram of a touch system provided by an embodiment of the present disclosure.
  • FIG. 2 is a schematic structural diagram of another touch system provided by an embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a touch system applied to a display according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another touch system applied to a display according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a touch positioning system provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another touch positioning system provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another touch positioning system provided by an embodiment of the present disclosure.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments.
  • the same reference numerals in the drawings indicate the same or similar structures, and thus their detailed descriptions will be omitted.
  • the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
  • the touch system 10 includes a plurality of information collectors 1 and an algorithm module 2.
  • the plurality of information collectors 1 are used to be fixed on the display 5 (Fig. (not shown), and each information collector 1 is used to collect positioning information when performing a touch operation on the display 5;
  • the algorithm module 2 is communicatively connected with multiple information collectors 1, and is used to obtain multiple positioning information information, and determine the position information when performing a touch operation on the display 5 based on multiple positioning information.
  • the positioning information when performing a touch operation on the display 5, can be collected separately through multiple information collectors 1 and transmitted to the algorithm module 2, and then the algorithm module 2 determines the position on the display 5 based on the multiple positioning information.
  • the position information during the touch operation is used to facilitate the touch operation on the display 5 .
  • the plurality of information collectors 1 can be fixed on the frame 52 of the display 5 by adhesion, or can be fixed on the display panel 51 of the display 5 by suction cups. Of course, it can also be fixed on the frame 52 and/or the display panel 51 of the display 5 in other ways, and the embodiment of the present disclosure does not limit this.
  • the installation position of the information collector 1 on the display 5 may be described with reference to the following disclosed embodiments.
  • the algorithm module 2 is used in conjunction with the display 5, so that after the algorithm module 2 determines the position information when a touch operation is performed on the display 5, the display 5 can obtain the position information, and perform a touch operation corresponding to the position information.
  • the positioning icon is displayed at the control location.
  • the display 5 may simulate a cursor point at the touch position.
  • the algorithm module 2 can be configured as a post-installation device of the display 5 , that is, the algorithm module 2 can be configured on an existing display 5 without a touch function to realize the touch function of the existing display 5 . In this way, compared with the existing display 5, it is possible to avoid replacing the existing display 5 due to the need for touch operations.
  • the algorithm module 2 can also be configured as an initial installation device of the display 5 , that is, the algorithm module 2 is configured during the manufacturing process of the display 5 to realize the touch function of the display 5 . In this way, compared with the existing touch-control integrated machine, the display 5 using the touch-control system 10 can save costs to the greatest extent.
  • the algorithm module 2 may be a carrier implanted with a carrier for performing the above operation process of "determining the position information when performing a touch operation on the display 5 based on multiple positioning information".
  • the algorithm module 2 and multiple information collectors 1 can be wired (for example, connected through USB cables) or wirelessly connected (for example, through radio signals) to achieve communication, thereby realizing communication between the information collectors 1 and the algorithm modules 2 Transmission of positioning information.
  • the touch system 10 further includes a processor 4 , and the processor 4 includes an algorithm module 2 . That is to say, the processor 4 includes a carrier embedded with a calculation process of "determining the position information when performing a touch operation on the display 5 based on multiple positioning information.”
  • the processor 4 may be a processor configured separately for the above operation process, or may be a processor included in the display 5 itself.
  • the processor 4 can be fixed on the display 5 and communicatively connected with the processor of the display 5 itself; it also does not need to be fixedly connected with the processor of the display 5 itself, as long as the processor It is sufficient that communication can be maintained between 4 and the processor of the display 5 itself.
  • the information collector 1 can be an optical sensor.
  • the positioning information collected by the information collector can be optical positioning information, that is, the positioning information includes optical positioning information.
  • the optical positioning information can be collected through the optical sensor and transmitted to the algorithm module 2, and then the algorithm module 2 determines the position information based on the collected multiple optical positioning information; of course, the information collector 1 can also be the signal receiver 11,
  • the positioning information collected by the information collector can be a positioning signal, that is, the positioning information includes the positioning signal.
  • the positioning signal radio positioning signal
  • the algorithm module 2 determines the position information according to the signal attenuation intensity of the multiple positioning signals received.
  • the optical sensor can be an infrared sensor, such as an infrared camera (in this case, the optical positioning information collected by the infrared camera is image positioning information).
  • the optical sensor can also be other sensors, such as an acoustic wave sensor,
  • the beam sensor is sufficient as long as it can collect optical positioning information, and the embodiments of the present disclosure do not limit this.
  • the touch system 10 also includes a stylus 3.
  • the stylus 3 includes a controller 31 and a signal transmitter 32; the controller 31 and the signal transmitter
  • the controller 32 is electrically connected.
  • the controller 31 is used to control the signal transmitter 32 to transmit a positioning signal when the stylus 3 touches the display 5 .
  • the signal receiver 11 is used to receive the positioning signal and transmit it to the algorithm module 2 .
  • the controller 31 can control the signal transmitter 32 to transmit a positioning signal, and then the signal receiver 11 receives the positioning signal, and the received positioning signal is Transfer to algorithm module 2.
  • the signal transmitter 32 and the signal receiver 11 have the same operating frequency band to ensure that the signal receiver 11 can receive the position signal transmitted by the signal transmitter 32.
  • the working frequency bands of the signal transmitter 32 and the signal receiver 11 are the same, and are greater than or equal to 2.4GHz and less than or equal to 2.4835GHz. In this way, it is ensured that the signal wave between the signal transmitter 32 and the signal receiver 11 has the advantages of low frequency and long wavelength.
  • the working frequency bands of the signal transmitter 32 and the signal receiver 11 are both 2.4GHz.
  • the stylus 3 also includes a control switch 33.
  • the control switch 33 is electrically connected to the controller 31 and the signal transmitter 32 respectively.
  • the control switch 33 can control the display when the stylus 3 touches the display. 5 o'clock, the controller 31 is used to control the signal transmitter 32 to transmit the positioning signal when the control switch 33 is turned on.
  • the signal transmitter 32 can transmit the positioning signal only when the control switch 33 is in the on state, thereby ensuring the accuracy of the positioning signal and avoiding the waste of electric energy caused by the continuous operation of the signal transmitter 32 .
  • the control switch 33 may be a button switch, a touch switch or a pressure sensor switch.
  • the control switch 33 can be located at any position on the body of the stylus pen 3; when the control switch 33 is a pressure-sensitive switch, the stylus pen 3 includes a pen body.
  • the pen tip position has a through hole, the pressure sensing switch has a pressure sensing end, the pressure sensing switch is located inside the pen body, and at least part of the pressure sensing end extends out of the through hole.
  • the control switch 33 is a pressure-sensitive switch
  • the pen tip when the user uses the stylus pen 3 to operate the display 5, the pen tip will inevitably touch the display 5. At this time, a force will inevitably be generated between the pen tip and the display 5, and further, the pen tip can be used to operate the display 5.
  • the pressure sensing switch is turned on under the action of the force.
  • the positioning signal emitted by the signal transmitter 32 can better represent the position information of the operating position of the stylus 3 on the display 5, so as to avoid the situation when the stylus 3 does not contact the display. 5. The positioning signal transmitted by the signal transmitter 32 is inaccurate.
  • the stylus 3 also includes a battery pack 36 and a charging circuit 37; the controller 31 is electrically connected to the battery pack 36 and the charging circuit 37 respectively, and the charging circuit 37 is used to electrically connect to an external power supply. Connect to charge the battery pack 36.
  • the battery pack 36 is directly electrically connected to the charging circuit 37 to charge the battery pack 36 directly after the charging circuit 37 is electrically connected to the external power supply, or is electrically connected to the charging circuit 37 through the controller 31 to charge the battery pack 36 when the controller 31 detects
  • the electrical connection between the charging circuit 37 and the battery pack 36 is turned on, thereby charging the battery pack 3616.
  • the charging circuit 37 can be a conventional wired charging circuit 37, such as a USB interface, or a wireless charging circuit 37, such as a magnetic charging circuit 37.
  • the charging circuit 37 may be electrically connected to the display 5 . That is to say, the display 5 has a discharge circuit 54, which will be specifically introduced in the subsequent explanation of the touch positioning system 20.
  • the stylus 3 also includes an option switch 34 and a first communication module 35; the controller 31 is electrically connected to the option switch 34 and the first communication module 35 respectively, and the option switch 34 is used to The trigger signal is generated and sent to the controller 31.
  • the controller 31 is used to generate a control signal when receiving the trigger signal and send it to the display 5 through the communication module.
  • the control signal is used to specify the display 5 to perform a corresponding action.
  • the option switch 34 can be a physical button, such as an open button corresponding to an open command, a close button corresponding to a close command, a confirm button corresponding to a confirm command, etc.
  • the command to be executed can be confirmed by clicking on different buttons. .
  • different commands can also share one button.
  • the number of times the button is pressed the duration and other operations can be detected to confirm the command to be executed. For example, an operation in which a button is pressed twice in a row corresponds to an open command, an operation in which a button is pressed three times in a row corresponds to a close command, and an operation in which a button is pressed for more than 3 seconds corresponds to a confirmation command.
  • a trigger signal corresponding to the command is generated.
  • a trigger signal corresponding to the open command is generated by one press of the button
  • a trigger signal corresponding to the close command is generated by two consecutive presses of the button.
  • the controller 31 generates the control signal to open the control signal, close the control signal, and confirm the control signal according to the trigger signal of the corresponding command, and send them out through the communication module.
  • the display 5 can be controlled.
  • the distance from the signal transmitter 32 to the tip of the stylus 3 is equal to the thickness of the signal receiver 11. In this way, after the signal receiver 11 is installed on the display 5, it can be ensured that the signal transmission path between the signal transmitter 32 and the signal receiver 11 is parallel to the surface of the display 5, thereby ensuring the accuracy of the subsequent position information determined by the display 5. .
  • the distance from the signal transmitter 32 to the tip of the stylus 3 may not be equal to the thickness of the signal receiver 11.
  • the signal transmission path between them only needs to be parallel to the surface of the display 5 .
  • the signal transmission path between the signal transmitter 32 and the signal receiver 11 and the surface of the display 5 may also have a smaller angle, such as 1 degree, 1.5 degrees, etc., which is not limited in the embodiment of the present disclosure.
  • the algorithm module 2 is configured to: obtain positioning information collected by multiple information collectors 1; determine the touch position when performing a touch operation on the display 5 and the multiple information collectors based on the multiple positioning information.
  • location information can also be determined by other methods, and the embodiments of the present disclosure do not limit this.
  • the algorithm module 2 pre-stores the positioning signal transmitted by the signal transmitter 32 of the stylus 3 The initial signal strength.
  • a rectangular coordinate system can be established in advance according to the size of the display 5, and the position coordinates of the multiple signal receivers 11 in the rectangular coordinate system can be determined, that is, the The position coordinates of each signal receiver 11 are stored in the algorithm module 2 in advance.
  • the signal strength of each positioning signal is determined, and the signal strength of each positioning signal is compared with the initial signal strength to obtain a signal strength corresponding to the multiple positioning signals. a corresponding signal attenuation intensity, and then determine the linear distance between the touch position of the stylus 3 on the display 5 and the multiple signal receivers 11 based on the multiple signal attenuation strengths, and then determine the linear distance between the touch position of the stylus 3 on the display 5 and the multiple signal receivers 11 based on the multiple signal attenuation strengths.
  • the position coordinates and multiple straight-line distances are used to determine the position information of the stylus 3 when it performs a touch operation on the display panel 51 .
  • the linear distance between the touch position of the stylus pen 3 on the display 5 and the corresponding signal receiver 11 can be determined through the following formula (1).
  • d refers to the straight-line distance
  • RSSI refers to the signal attenuation intensity
  • abs (RSSI) refers to the absolute value of the signal attenuation intensity
  • A refers to the signal transmitter 32 and the signal receiver 11 when they are separated by unit distance.
  • Signal attenuation strength for example, A is 48
  • n refers to the environmental attenuation factor. Since there is no obstruction between the signal transmitter 32 and the signal receiver 11 and there is only a display screen around, n can be obtained by reversely solving the preset straight line distance.
  • the long side size of the display 5 is preset to a and the wide side size is b, and the first signal receiver 11 is located The lower left corner of the display 5, and the stylus pen 3 is operated at the intersection point O of the diagonal lines of the display 5, that is, the touch position S of the stylus pen 3 on the display 5 is located at the intersection point O of the diagonal lines of the display 5.
  • the straight-line distance d determined according to the size of the long side and wide side of the display 5 is In this way, when A is known, combined with the determined signal attenuation intensity corresponding to the first signal receiver 11, a reverse solution is performed to obtain n as 2.0.
  • the number of signal receivers 11 included in the touch system 10 may be two or more.
  • the two signal receivers 11 When two signal receivers 11 are included, the two signal receivers 11 are fixed on the same side of the display 5 at intervals, and at least one of the two signal receivers 11 is located at a corner of the display 5 . In this way, a set of initial position information can be determined based on the two position coordinates and the two straight-line distances, and then the set of initial position information can be determined as the position information of the touch position.
  • the touch system 10 includes four signal receivers 11. As shown in FIG. The extension direction) is the x-axis, and the vertical direction (the extension of the wide side) is the y-axis to establish a rectangular coordinate system. At this time, the four signal receivers 11 are respectively fixed at the four corners of the display 5. At this time, the position coordinates of the first signal receiver 11 among the four signal receivers 11 are (0, 0), and the position coordinates of the second signal receiver 11 are respectively (0, 0). The position coordinates of 11 are (a, 0), the position coordinates of the third signal receiver 11 are (0, b), and the position coordinates of the fourth signal receiver 11 are (a, b).
  • multiple sets of initial position information can be determined based on the position coordinates of the four signal receivers 11 and the corresponding four straight-line distances, and then the position of the stylus 3 when operating on the display panel 51 can be determined based on the multiple sets of initial position information. information.
  • any three of the four signal receivers 11 can form a triangle, and two adjacent ones of the four signal receivers 11 are located at two corners of the same side of the frame 52. In this way, they can be aligned
  • the four signal receivers 11 are divided to obtain multiple groups of signal receivers 11, and then corresponding multiple groups of position coordinates are obtained. Multiple position coordinates of any two sets of multiple sets of position coordinates are not exactly the same, and at least two sets of position coordinates include at least one identical position coordinate.
  • the first set of position coordinates includes the first signal receiver 11, the second signal receiver 11, the third signal receiver 11, and the third signal receiver 11.
  • Three position coordinates of the receiver 11; the first set of straight-line distances includes the distances between the first signal receiver 11, the second signal receiver 11, and the third signal receiver 11 and the operating positions respectively.
  • the second set of position coordinates includes three position coordinates of the second signal receiver 11, the third signal receiver 11, and the fourth signal receiver 11; the first set of straight-line distances includes the second signal receiver 11, the third signal receiver 11. The distance between the fourth signal receiver 11 and the touch position of the stylus 3 on the display panel 51 .
  • the corresponding first set of initial coordinates is determined according to the following formula (2), formula (3), and formula (4).
  • d 1 , d 2 and d 3 respectively refer to the first signal receiver 11 , the second signal receiver 11 , the third signal receiver 11 and the touch position.
  • the distance between them, X and Y refer to the abscissa and ordinate of the first set of initial position information, X 1 and Y 1 respectively refer to the abscissa and ordinate of the position information of the first signal receiver 11, X 2 , Y 2 respectively refers to the abscissa and ordinate of the position information of the second signal receiver 11 , and X 3 and Y 3 respectively refer to the abscissa and ordinate of the position information of the third signal receiver 11 .
  • the corresponding second set of initial position information is determined through the second set of position coordinates and the second set of straight-line distances.
  • the information collector 1 as an optical sensor, and the optical sensor collects image positioning information as an example
  • multiple markers such as indicator lights
  • multiple markers are installed on the display 5.
  • a rectangular coordinate system can be established in advance according to the size of the display 5, and the position coordinates of multiple optical sensors in the rectangular coordinate system can be determined, and the actual distance between each optical sensor and each marker can be determined, and then The position coordinates of each optical sensor and the actual distance between each optical sensor and each marker are pre-stored in the algorithm module 2.
  • the image positioning information collected by the optical sensor includes touch objects (such as fingers). , stylus 3) and markers.
  • the image positioning information can be binarized, denoised, and other operations to identify the touch objects and target markers in the image positioning information. And determine the image distance between the optical sensor and the touch object and the target marker respectively. Then combined with the actual distance between the optical sensor and the target marker, through proportional calculation, the actual distance between the optical sensor and the touch object can be determined. distance to obtain the straight-line distance between the touch position of the touch object on the display 5 and the multiple optical sensors. Then, based on the position coordinates of each optical sensor and multiple straight-line distances, the position information of the touch position when the touch object performs a touch operation on the display panel 51 is determined.
  • the method of determining the position information of the touch position by combining the position coordinates of multiple optical sensors and the corresponding linear distances can refer to the above-mentioned method of determining the position coordinates of the multiple signal receivers 11 and the multiple linear distances.
  • the method of location information will not be described again in the embodiments of this disclosure.
  • the touch positioning system 20 includes: a first processor 41 and multiple information collectors 1; each information collector 1 is used to be fixedly connected to the display 5, and is connected to the first processor 41 Communication connection.
  • the information collector 1 is used to collect positioning information when performing a touch operation on the display 5.
  • the first processor 41 includes an algorithm module 2.
  • the algorithm module 2 is used to obtain multiple positioning information and determine the positioning information of the display 5 based on the multiple positioning information. Location information when performing touch operations.
  • the positioning information when performing a touch operation on the display 5, can be collected through multiple information collectors 1 and transmitted to the algorithm module 2, and then the algorithm module 2 determines the operation of the display 5 based on the multiple positioning information.
  • the position information during the touch operation facilitates the touch operation on the display 5 .
  • the first processor 41 and the plurality of information collectors 1 can be wired (such as connected through USB cables) or wirelessly connected (connected through radio signals) to achieve communication, thereby realizing the information collector 1 and the third information collector 1. Transmission of positioning information between processors 41.
  • the first processor 41 may be a processor included in the display 5 itself, or a processor configured separately for the above-mentioned algorithm module 2.
  • the touch positioning system 20 further includes the display 5 , and the display 5 includes the first processor 41 .
  • the first processor 41 can control the display 5 to perform corresponding operations according to the determined position information.
  • the first processor 41 can control the display 5 to display the positioning icon at the corresponding position according to the position information, so that the user can determine the actual position of the current touch operation.
  • the information collector 1 when the information collector 1 transmits the positioning information to the first processor 41, it can also transmit the collection time of the positioning information, or when the first processor 41 obtains the positioning information transmitted by the information collector 1, it can also generate a corresponding positioning information at the same time. collection time.
  • the first processor 41 can determine at least one position information based on multiple positioning information within a time period, and determine at least one position information and at least one time information in one-to-one correspondence, and then can determine at least one position information and at least one time information.
  • the time information determines the operation performed by the display 5 (such as an operation corresponding to a single click, an operation corresponding to a double-click, an operation corresponding to multiple fingers, an operation corresponding to a sliding track, etc.).
  • the first processor 41 determines that a piece of location information is obtained within a time period. At this time, the first processor 41 may determine that it is necessary to control the display 5 to perform an operation corresponding to a click; Two position information, the two position information are the same or have a small difference, and the corresponding time information is different. At this time, the first processor 41 can determine that it is necessary to control the display 5 to perform a double-click corresponding operation; the first processor 41 determines that in one Two position information are obtained within the time period. The two position information are different and the corresponding time information is the same.
  • the first processor 41 can determine that it is necessary to control the display 5 to perform an operation corresponding to two fingers; the first processor 41 determines that in a Multiple position information is obtained within a time period (for example, the number is greater than 5, 8 or 10). The multiple position information is different and the corresponding time information is different. At this time, the first processor 41 may determine that it is necessary to control the display 5 to perform sliding trajectory mapping. operation.
  • the display 5 also includes a second processor 42 , and the second processor 42 is communicatively connected to the first processor 41 respectively; the second processor 42 Used to obtain location information to control the display 5 to perform corresponding operations.
  • the first processor 41 may be fixed on the display 5 , or may not be fixedly connected to the display 5 , as long as the first processor 41 and the second processor 42 can maintain communication.
  • the second processor 42 can control the display 5 to display the positioning icon at the corresponding position according to the position information, so that the user can determine the actual position of the current touch operation.
  • the information collector 1 when the information collector 1 transmits the positioning information to the first processor 41, it can also transmit the collection time of the positioning information, or when the first processor 41 obtains the positioning information transmitted by the information collector 1, it can also generate a corresponding positioning information at the same time. collection time.
  • the first processor 41 may determine one or more position information based on multiple positioning information within a time period, and determine one or more time information respectively corresponding to the one or more position information. That is, the first processor 41 is also configured to determine at least one position information and at least one time information in one-to-one correspondence when performing a touch operation on the display 5 based on the plurality of positioning information.
  • the second processor 42 can obtain at least one position information and at least one time information in one-to-one correspondence, and control the display 5 to perform corresponding operations based on the at least one position information and the at least one time information.
  • the second processor 42 controls the display 5 to perform corresponding operations based on at least one position information and at least one time information. Reference may be made to the above-mentioned first processor 41 based on at least one position information and at least one time information. The specific process of controlling the display 5 to perform corresponding operations will not be described in detail in the embodiments of this disclosure.
  • the first processor 41 can be configured as a post-installed device of the display 5, that is, on the existing display 5 without touch function.
  • the first processor 41 is configured to implement the touch function of the existing display 5 . In this way, compared with the existing display 5 , it is possible to avoid replacing the existing display 5 due to the need for touch operations.
  • the first processor 41 is a processor included in the display 5 itself, the first processor 41 can also be configured as an initial installation device of the display 5, that is, the first processor 41 is configured during the manufacturing process of the display 5. To realize the touch function of the display 5. In this way, the touch positioning system 20 can save costs to the maximum extent compared to the existing touch-control integrated machine.
  • the information collector 1 can be an optical sensor.
  • the positioning information collected by the information collector can be optical positioning information, that is, the positioning information includes optical positioning information.
  • the optical positioning information can be collected through the optical sensor and transmitted to the algorithm module 2, and then the algorithm module 2 included in the first processor 41 determines the position of the display 5 when performing a touch operation based on the collected plurality of optical positioning information.
  • the information collector 1 can also be a signal receiver 11.
  • the positioning information collected by the information collector can be a positioning signal, that is, the positioning information includes a positioning signal.
  • the positioning signal (radio positioning signal) can be received through the signal receiver 11, and then the algorithm module 2 included in the first processor 41 determines the positioning signal when performing a touch operation on the display 5 according to the attenuation intensity of the multiple positioning signals received. location information.
  • the optical sensor can be an infrared sensor, such as an infrared camera (in this case, the optical positioning information collected by the infrared camera is image positioning information).
  • the optical positioning information collected by the infrared camera is image positioning information
  • it can also be other sensors, such as sound waves. Sensors and light beam sensors are sufficient as long as they can collect optical positioning information, and the embodiments of the present disclosure are not limited to this.
  • the touch positioning system 20 also includes a stylus 3.
  • the stylus 3 includes a controller 31 and a signal transmitter 32; the controller 31 Electrically connected to the signal transmitter 32, the controller 31 is used to control the signal transmitter 32 to transmit a positioning signal when the stylus 3 touches the display 5.
  • the information collector 1 is a signal receiver 11, and the signal receiver 11 is used to collect positioning. signal and transmitted to algorithm module 2.
  • the operating frequency bands of the signal transmitter 32 and the signal receiver 11 are the same, and are greater than or equal to 2.4 GHz and less than or equal to 2.4835 GHz. In this way, it is ensured that the signal wave between the signal transmitter 32 and the signal receiver 11 has the advantages of low frequency and long wavelength.
  • the signal transmitter 32 and the signal receiver 11 have the same operating frequency band, which is 2.4GHz.
  • the information collector 1 is an optical sensor and a signal receiver 11
  • the specific method of determining the position information of the touch operation on the display 5 can be referred to the above-mentioned embodiments.
  • the embodiments of the present disclosure are I won’t go into details here.
  • the display 5 when the stylus 3 is used with the display 5, in order to ensure the endurance of the stylus 3, as shown in Figure 7, the display 5 also includes a discharge circuit 54, and the discharge circuit 54 is used to communicate with the stylus 3 3 electrical connections to charge the stylus 3. In this way, when the stylus 3 is not in use, the stylus 3 can be electrically connected to the discharge circuit 54 of the display 5 to charge the stylus 3 .
  • the discharge circuit 54 is a wireless discharge circuit 54, such as a magnetic discharge circuit 54.
  • the charging circuit 37 included in the stylus 3 is a magnetic charging circuit 37.
  • the display 5 has a bearing platform, so that the stylus pen 3 can be supported by the bearing platform to avoid the weak magnetic attraction causing the stylus pen 3 to fall off.
  • the display 5 when the stylus pen 3 is used with the display 5, in order to facilitate the control operation of the display 5 through the stylus pen 3, as shown in Figure 7, the display 5 also includes a second communication module 53.
  • the communication module 53 is electrically connected to the processor included in the display 5 itself; the second communication module 53 is used to receive control signals and transmit them to the processor included in the display 5 itself.
  • the processor included in the display 5 itself is used to control the execution and control of the display 5 The corresponding operation of the signal.
  • control signals sent by the stylus pen 3 may be an opening control signal, a closing control signal, and a confirmation control signal.
  • the processor included in the display 5 itself can control the execution of the display 5 by turning on the control signal, closing the control signal, and confirming the control signal according to the control signal. Corresponding operations.
  • the second communication module 53 is electrically connected to the second processor 42 to communicate through The second processor 42 receives the control signal and controls the display 5 to perform operations corresponding to the control signal;
  • the first processor 41 is a processor included in the display 5 itself, the second communication module 53 is electrically connected to the first processor 41 , to receive the control signal through the first processor 41 and control the display 5 to perform operations corresponding to the control signal.
  • the number of information collectors 1 included in the touch positioning system 20 may be two or more.
  • the display 5 is in a rectangular shape, the two information collectors 1 are spaced and fixed on the same side of the display 5, and at least one of the two information collectors 1 is located on the display. 5 corner.
  • the lines connecting the locations of the multiple information collectors 1 can form a polygon.
  • multiple information collectors 1 can be formed into a triangle, a quadrilateral rectangle, a rhombus, a pentagon, etc.
  • the touch positioning system 20 includes four information collectors 1 , and the four information collectors 1 are respectively installed at the four corners of the display 5 .
  • the display 5 includes a display panel 51 and a frame 52 covering the edge of the display panel 51 .
  • the information collector 1 is fixed on the outer wall of the frame 52 , and each information collector 1 The collection end protrudes from the display surface of the display panel 51 .
  • the information collector 1 can be installed externally, while ensuring that the information collector 1 can collect position information, so that it will not affect the production of the display 5; of course, the information collector 1 can also be installed internally, so that the display 5 can be The structure is adjusted to facilitate the installation of the information collector 1 during the manufacturing process of the display 5.
  • the display 5 includes a display panel 51 , and a plurality of information collectors 1 are fixed on the edges of the display surface of the display panel 51 .
  • the information collector 1 may be detachably fixed on the display panel 51 .
  • the display panel 51 can display a fixed mark when displaying the screen to ensure the accuracy of the position and installation of the information collector 1 .

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Abstract

本申请提供了一种触控系统及触控定位系统。该触控系统包括：多个信息采集器(1)，用于固定在显示器(5)的外表面，且各信息采集器(1)用于在对显示器(5)进行触控操作时采集定位信息；算法模块(2)，与多个信息采集器(1)通信连接，且用于获取多个定位信息，并根据多个定位信息确定对显示器(5)进行触控操作时的位置信息。本申请实施方式中，在对显示器(5)进行触控操作时，可通过多个信息采集器(1)分别采集定位信息并传输至算法模块(2)，以便算法模块(2)根据多个定位信息确定位置信息，进而便于实现对显示器(5)的触控操作。

Description

触控系统及触控定位系统 技术领域
本公开涉及触控技术领域，具体而言，涉及一种触控系统及触控定位系统。
背景技术
随着显示技术的快速发展，尺寸较大的显示装置(比如会议白板等)越来越受到用户的青睐。而在显示装置的使用过程中，由于不具备触控的功能，从而无法满足用户的部分需求。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开的目的在于提供一种触控系统及触控定位系统。
根据本公开的第一方面，提供一种触控系统，包括：
多个信息采集器，用于固定在显示器的外表面，且各所述信息采集器用于在对所述显示器进行触控操作时采集定位信息；
算法模块，与多个所述信息采集器通信连接，且用于获取多个所述定位信息，并根据多个所述定位信息确定对所述显示器进行触控操作时的位置信息。
根据本公开任一所述的所述的触控系统，所述信息采集器为光学传感器，所述定位信息包括光学定位信息；
所述光学传感器用于采集光学定位信息，并传输至所述算法模块，所述算法模块用于根据多个所述光学定位信息确定所述位置信息。
根据本公开任一所述的所述的触控系统，所述触控系统还包括触控笔，所述触控笔包括控制器和信号发射器，所述定位信息包括定位信号；
所述控制器与所述信号发射器电连接，所述控制器用于在所述触控笔触控所述显示器时控制所述信号发射器发射定位信号，所述信息采集器为信号接收器，所述信号接收器用于接收所述定位信号并传输至所述算法模块，所述算法模块用于根据多个所述定位信号的信号衰减强度确定所述位置信息。
根据本公开任一所述的所述的触控系统，所述信息发射器和所述信号接收器的工作频段相同，且大于或等于2.4GHz，小于或等于2.4835GHz。
根据本公开任一所述的所述的触控系统，所述触控笔还包括控制开关；
所述控制开关分别与所述控制器、所述信号发射器电连接，所述控制开关能够在所述触控笔触控所述显示器时保持在导通状态，所述控制器用于在所述控制开关导通时控制所述信号发射器发射定位信号。
根据本公开任一所述的所述的触控系统，所述触控笔包括笔身，所述笔身的笔尖位置具有通孔；
所述控制开关为压力感应开关，且具有压力感应端，所述压力感应开关位于所述笔身内部，所述压力感应端的至少部分伸出所述通孔。
根据本公开任一所述的所述的触控系统，所述算法模块被配置为：
获取多个所述信息采集器采集的定位信息；根据多个所述定位信息分别确定对所述显示器进行触控操作时的触控位置与多个所述信息采集器之间的直线距离；根据多个所述直线距离确定所述触控位置的位置信息。
根据本公开任一所述的所述的触控系统，所述触控系统包括处理器，所述处理器包括所述算法模块。
根据本公开的第二方面，提供一种触控定位系统，所述触控定位系统包括：
第一处理器；
多个信息采集器，各所述信息采集器用于与显示器固定连接，且均与所述第一处理器通信连接；
所述信息采集器用于在对所述显示器进行触控操作时采集定位信息，所述第一处理器包括算法模块，所述算法模块用于获取多个所述定位信息，并根据多个所述定位信息确定所述显示器被触控时的位置信息。
根据本公开任一所述的所述的触控定位系统，所述触控定位系统包括显示器；
所述显示器包括所述第一处理器，所述第一处理器用于根据所述位置信息控制所述显示器执行相应操作。
根据本公开任一所述的所述的触控定位系统，所述触控定位系统包括显示器；
所述显示器包括第二处理器，所述第二处理器与所述第一处理器通信连接，所述第二处理器用于获取所述位置信息，以控制所述显示器执行相应操作。
根据本公开任一所述的所述的触控定位系统，所述第一处理器还用于根据多个所述定位信息确定至少一个所述位置信息和一一对应的至少一个时间信息，所述第二处理器用于获取至少一个所述位置信息和至少一个所述时间信息，并根据至少一个所述位置信息和至少一个所述时间信息控制所述显示器执行相应操作。
根据本公开任一所述的所述的触控定位系统，所述显示器呈矩形，所述触控定位系统包括2个所述信息采集器；
两个所述信息采集器间隔固定在所述显示器的同一侧边，且两个所述信息采集器中的至少一者位于所述显示器的角部。
根据本公开任一所述的所述的触控定位系统，所述触控定位系统包括3个或3个以上所述信息采集器，且多个所述信息采集器所在位置的连线能够围成多边形。
根据本公开任一所述的所述的触控定位系统，所述显示器包括显示面板和包覆在所述显示面板边缘的边框；
多个所述信息采集器固定在所述边框的外壁，且各所述信息采集器的采集端凸出所述显示面板的显示面。
根据本公开任一所述的所述的触控定位系统，所述显示器包括显示面板，多个所述信息采集器固定在所述显示面板的显示面的边缘。
根据本公开任一所述的所述的触控定位系统，所述信息采集器为光学传感器，所述定位信息包括光学定位信息；
所述光学传感器用于采集光学定位信息，并传输至所述算法模块，所述算法模块用于根据多个所述光学定位信息确定所述位置信息。
根据本公开任一所述的所述的触控定位系统，所述触控系统还包括触控笔，所述触控笔包括控制器和信号发射器，所述定位信息包括定位信号；
所述控制器与所述信号发射器电连接，所述控制器用于在所述触控笔触控所述显示器时控制所述信号发射器发射定位信号，所述信息采集器用于采集所述定位信号，并传输至所述算法模块，所述算法模块用于根据多个所述定位信号的信号衰减强度确定所述位置信息。
根据本公开任一所述的所述的触控定位系统，所述信息发射器和所述信号接收器的工作频段相同，且大于或等于2.4GHz，小于或等于2.4835GHz。
根据本公开任一所述的所述的触控定位系统，所述显示器还包括放电电路，所述放电电路用于与所述触控笔电连接，以为所述触控笔充电。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施方式提供的一种触控系统的结构示意图。
图2为本公开实施方式提供的另一种触控系统的结构示意图。
图3为本公开实施方式提供的一种触控系统应用在显示器的结构示意图。
图4为本公开实施方式提供的另一种触控系统应用在显示器的结构示意图。
图5为本公开实施方式提供的一种触控定位系统的结构示意图。
图6为本公开实施方式提供的另一种触控定位系统的结构示意图。
图7为本公开实施方式提供的又一种触控定位系统的结构示意图。
附图标记：
10、触控系统；20、触控定位系统；
1、信息采集器；2、算法模块；3、触控笔；4、处理器；5、显示器；
11、信号接收器；
31、控制器；32、信号发射器；33、控制开关；34、选项开关；35、第一通信模块；36、电池组；37、充电电路；
41、第一处理器；42、第二处理器；
51、显示面板；52、边框；53、第二通信模块；54、放电电路。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实 施方式使得本公开将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。
用语“一个”、“一”、“该”、“所述”和“至少一个”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等；用语“第一”、“第二”和“第三”等仅作为标记使用，不是对其对象的数量限制。
本公开实施方式提供了一种触控系统10，如图1所示，该触控系统10包括多个信息采集器1和算法模块2，多个信息采集器1用于固定在显示器5(图中未示出)的外表面，且各信息采集器1用于在对显示器5进行触控操作时采集定位信息；算法模块2与多个信息采集器1通信连接，且用于获取多个定位信息，并根据多个定位信息确定对显示器5进行触控操作时的位置信息。
本公开实施方式中，在对显示器5进行触控操作时，可通过多个信息采集器1分别采集定位信息并传输至算法模块2，进而由算法模块2根据多个定位信息确定在显示器5上进行触控操作时的位置信息，进而便于实现对显示器5的触控操作。
其中，多个信息采集器1可以通过粘接的方式固定在显示器5的边框52上，也可以通过吸盘吸附的方式固定在显示器5的显示面板51上。当然，也可以通过其他方式固定在显示器5的边框52和/或显示面板51上，本公开实施方式对此不做限定。信息采集器1在显示器5上的安装位置可参考下述公开实施方式所述。
其中，算法模块2用于配合显示器5使用，以便在算法模块2确定了在显示器5上进行触控操作时的位置信息后，显示器5能够获取到该位置信息，并在该位置信息对应的触控位置处显示定位图标。示例地，显示器5可在触控位置处模拟出光标点。
需要说明的是，算法模块2可配置为显示器5的后装器件，也即是在现有的无触控功能的显示器5上配置算法模块2，以实现现有显示器5的触控功能。如此，相对于现有的显示器5，能够避免因对触控操作的需求而更换现有显示 器5的情况。当然，算法模块2也可配置为显示器5的初装器件，也即是在显示器5的制作过程中配置有算法模块2，以实现显示器5的触控功能。如此，相对于现有的触控一体机，使用该触控系统10的显示器5能够最大化节省成本。
其中，算法模块2可以为植入有用于执行上述运算过程“根据多个定位信息确定对显示器5进行触控操作时的位置信息”的载体。算法模块2与多个信息采集器1可以为有线连接(比如通过USB线连接)，也可以无线连接(比如通过无线电信号连接)，以实现通信，进而实现信息采集器1与算法模块2之间定位信息的传输。
本公开实施方式中，如图1所示，触控系统10还包括处理器4，处理器4包括算法模块2。也即是，处理器4中包括植入有运算过程“根据多个定位信息确定对显示器5进行触控操作时的位置信息”的载体。
其中，处理器4可以为针对上述运算过程单独配置的处理器，也可以为显示器5自身包括的处理器。
当处理器4为单独配置的处理器时，该处理器4可固定在显示器5上，且与显示器5自身的处理器通信连接；也可不与显示器5自身的处理器固定连接，只要该处理器4与显示器5自身的处理器之间能够保持通信即可。
本公开实施方式中，信息采集器1可以为光学传感器，此时信息采集器采集的定位信息可以为光学定位信息，也即是定位信息包括光学定位信息。如此，可通过光学传感器采集光学定位信息，并传输至算法模块2，进而由算法模块2根据采集到的多个光学定位信息确定位置信息；当然，信息采集器1也可以为信号接收器11，此时信息采集器采集的定位信息可以为定位信号，也即是定位信息包括定位信号。如此，可通过信号接收器11接收定位信号(无线电定位信号)，进而由算法模块2根据接收到的多个定位信号的信号衰减强度确定位置信息。
对于信息采集器1为光学传感器的情况，光学传感器可以为红外传感器，比如红外摄像头(此时红外摄像头采集的光学定位信息为图像定位信息)，当然也可以为其他传感器，比如可以为声波传感器、光束传感器，只要能够采集到光学定位信息即可，本公开实施方式对此不做限定。
对于信息采集器1为信号接收器11的情况，如图2所示，触控系统10还 包括触控笔3，触控笔3包括控制器31和信号发射器32；控制器31与信号发射器32电连接，控制器31用于在触控笔3触控显示器5时控制信号发射器32发射定位信号，信号接收器11用于接收定位信号并传输至算法模块2。
如此，在触控笔3在显示器5上进行触控操作时，即可通过控制器31控制信号发射器32发射定位信号，进而由信号接收器11接收该定位信号，并将接收到的定位信号传输至算法模块2。
其中，信号发射器32、信号接收器11具有相同的工作频段，以保证信号接收器11能够接收到信号发射器32发射的位置信号。可选地，信号发射器32、信号接收器11的工作频段相同，且大于或等于2.4GHz，小于或等于2.4835GHz。如此，以保证信号发射器32与信号接收器11之间的信号波具有频率低、波长长的优点。示例地，信号发射器32、信号接收器11的工作频段均为2.4GHz。
在一些实施方式中，如图2所示，触控笔3还包括控制开关33，控制开关33分别与控制器31、信号发射器32电连接，控制开关33能够在触控笔3触控显示器5时保持在导通状态，控制器31用于在控制开关33导通时控制信号发射器32发射定位信号。
如此，只有在控制开关33处于导通状态时，信号发射器32才能够发射定位信号，从而保证定位信号的准确性，同时避免因信号发射器32持续工作而造成的电能的浪费。
其中，控制开关33可以为按钮开关、触控开关或压力感应开关。当控制开关33为按钮开关或触控开关时，控制开关33可以位于在触控笔3的笔身的任意位置；当控制开关33为压力感应开关时，触控笔3包括笔身，笔身的笔尖位置具有通孔，压力感应开关具有压力感应端，压力感应开关位于笔身内部，压力感应端的至少部分伸出通孔。
对于控制开关33为压力感应开关的情况，在用户使用触控笔3操作显示器5时，必然会通过笔尖触碰显示器5，此时笔尖与显示器5之间必然产生作用力，进而，可在该作用力的作用下促使压力感应开关导通，此时信号发射器32发射的定位信号更能代表触控笔3在显示器5上的操作位置的位置信息，避免在触控笔3未接触到显示器5时信号发射器32发射的定位信号不准确的情况。
本公开实施方式中，如图2所示，触控笔3还包括电池组36和充电电路37；控制器31分别与电池组36、充电电路37电连接，充电电路37用于与外接电源电连接，以为电池组36充电。
其中，电池组36与充电电路37直接电连接，以在充电电路37与外接电源电连接后直接为电池组36充电，或者通过控制器31与充电电路37电连接，以在控制器31检测到充电电路37与外接电源连接时，导通充电电路37与电池组36之间的电连接，从而为电池组3616充电。
其中，充电电路37可以为常规有线充电电路37，比如USB接口，也可以为无线充电电路37，比如磁吸充电电路37。可选地，充电电路37可与显示器5电连接。也即是显示器5具有放电电路54，其具体在后续触控定位系统20的解释中进行介绍。
本公开实施方式中，如图2所示，触控笔3还包括选项开关34和第一通信模块35；控制器31分别与选项开关34、第一通信模块35电连接，选项开关34用于生成触发信号并发送至控制器31，控制器31用于在接收到触发信号时生成控制信号，并通过通信模块发送至显示器5，控制信号用于指定显示器5执行相应的动作。
其中，选项开关34可以为物理按键，比如包括打开命令对应的打开按键、关闭命令对应的关闭按键、确认命令对应的确认按键等，此时可通过对不同按键的单击操作确认所要执行的命令。当然，不同的命令也可共用一个按键，此时可检测按键被按压的次数、持续时长等操作，确认所要执行的命令。比如，按键被连续两次按压的操作对应打开命令，按键被连续三次按压的操作对应关闭命令对应，按键被按压的持续时长大于3秒的操作对应确认命令。
当选项开关34检测到触发操作单击按压、连续按压、持续按压时生成对应命令的触发信号比如生成打开命令对应的触发信号按键的一次按压、生成关闭命令对应的触发信号按键的连续两次按压，并将对应命令的触发信号发送至控制器31，此时控制器31根据该对应命令的触发信号生成控制信号打开控制信号、关闭控制信号、确认控制信号，并通过通信模块外发，如此，能够在确定了触控笔3在显示器5上进行触控操作时的位置信息后，实现对显示器5的控制。
在一些实施方式中，信号发射器32到触控笔3的笔尖的距离等于信号接 收器11的厚度。如此在将信号接收器11安装在显示器5上后，能够保证信号发射器32、信号接收器11之间的信号传输路径与显示器5的表面平行，从而保证后续显示器5确定的位置信息的准确性。
当然，信号发射器32到触控笔3的笔尖的距离也可以不等于信号接收器11的厚度，此时在显示器5上安装信号接收器11时，只要保证信号发射器32、信号接收器11之间的信号传输路径与显示器5的表面平行即可。当然，信号发射器32、信号接收器11之间的信号传输路径与显示器5的表面也可以存在较小的夹角，比如1度、1.5度等，本公开实施方式对此不做限定。
本公开实施方式中，算法模块2被配置为：获取多个信息采集器1采集的定位信息；根据多个定位信息分别确定对显示器5进行触控操作时的触控位置与多个信息采集器1之间的直线距离；根据多个直线距离确定触控位置的位置信息。
接下来分别对算法模块2获取到的定位信息分别为定位信号、光学定位信息的具体方法进行详细解释。当然，除了本公开实施方式所解释的方法外，还可以通过其他方法确定位置信息，本公开实施方式对此不做限定。
以信息采集器1为信号接收器11，且信号接收器11接收到定位信号为例，在一些实施方式中，算法模块2中预先存储有触控笔3的信号发射器32发射的定位信号的初始信号强度，另外在显示器5上安装信号接收器11后，可预先根据显示器5的尺寸建立直角坐标系，并确定多个信号接收器11在该直角坐标系中的位置坐标，也即是可预先在算法模块2中存储每个信号接收器11的位置坐标。
如此，在获取到多个信号接收器11接收到的定位信号后，确定每个定位信号的信号强度，并将每个定位信号的信号强度与初始信号强度作差，得到与多个定位信号一一对应的信号衰减强度，之后再根据多个信号衰减强度分别确定触控笔3在显示器5上的触控位置与多个信号接收器11之间的直线距离，再根据每个信号接收器11的位置坐标和多个直线距离，确定触控笔3在显示面板51上进行触控操作时的位置信息。
其中，对于每个信号衰减强度，可通过如下公式(1)，确定触控笔3在显示器5上的触控位置与相应的信号接收器11之间的直线距离。
d＝10 [(abs(RSSI)-A)/(10*n)]       (1)
上述公式(1)中，d是指直线距离，RSSI是指信号衰减强度，abs(RSSI)是指信号衰减强度的绝对值，A是指信号发射器32与信号接收器11间隔单位距离时的信号衰减强度，示例地，A为48，n是指环境衰减因子。由于信号发射器32到信号接收器11之间没有遮挡物且周围只有显示屏，因此n可以通过预先设定的直线距离进行反向求解得到。
示例地，如图3所示，对于多个信号接收器11中的第一信号接收器11，预先设定显示器5的长边尺寸为a，宽边尺寸为b，第一信号接收器11位于显示器5的左下角，且触控笔3操作在于显示器5的对角线交点O处，也即是触控笔3在显示器5上的触控位置S位于显示器5的对角线交点O处。此时根据显示器5的长边和宽边的尺寸确定的直线距离d为
Figure PCTCN2022090605-appb-000001
如此在A已知的情况下，结合确定的第一信号接收器11对应的信号衰减强度，进行反向求解得到n为2.0。
其中，触控系统10包括的信号接收器11的数量可以为两个或两个以上。
当包括两个信号接收器11时，两个信号接收器11间隔固定在显示器5的同一侧边，且两个信号接收器11中的至少一者位于显示器5的角部。如此，可根据两个位置坐标和两个直线距离，确定一组初始位置信息，再将该组初始位置信息确定为触控位置的位置信息。
当包括两个以上信号接收器11时，示例地，触控系统10包括四个信号接收器11，如图4所示，以显示面板51左下角为坐标原点，并分别以水平方向(长边的延伸方向)为x轴，以竖直方向(宽边的延伸)为y轴建立直角坐标系。此时四个信号接收器11分别固定在显示器5的四个角部，此时四个信号接收器11中第一信号接收器11的位置坐标分别为(0，0)、第二信号接收器11的位置坐标分别为(a，0)、第三信号接收器11的位置坐标分别为(0，b)第四信号接收器11的位置坐标为(a，b)。如此，可根据四个信号接收器11的位置坐标和对应的四个直线距离，确定多组初始位置信息，再根据多组初始位置信息确定触控笔3在显示面板51上进行操作时的位置信息。
其中，四个信号接收器11中的任意三个能够围成一个三角形，且四个信号接收器11中的相邻的两个位于边框52同一侧边的两个角部，如此，可对对四个信号接收器11进行划分，得到多组信号接收器11，进而得到对应的多组 位置坐标。多组位置坐标中任意两组的多个位置坐标不全相同，且存在至少两组位置坐标包括相同的至少一个位置坐标。
示例地，将四个位置坐标和四个直线距离划分为两组位置坐标和对应的两组直线距离，第一组位置坐标包括第一信号接收器11、第二信号接收器11、第三信号接收器11的三个位置坐标；第一组直线距离包括第一信号接收器11、第二信号接收器11、第三信号接收器11分别与操作位置之间的距离。第二组位置坐标包括第二信号接收器11、第三信号接收器11、第四信号接收器11的三个位置坐标；第一组直线距离包括第二信号接收器11、第三信号接收器11、第四信号接收器11分别与触控笔3在显示面板51上的触控位置之间的距离。
如此，通过第一组位置坐标和第一组直线距离，按照如下公式(2)、公式(3)、公式(4)确定对应的第一组初始坐标。
Figure PCTCN2022090605-appb-000002
Figure PCTCN2022090605-appb-000003
Figure PCTCN2022090605-appb-000004
上述公式(2)、(3)、(4)中，d 1、d 2、d 3分别是指第一信号接收器11、第二信号接收器11、第三信号接收器11与触控位置之间的距离，X、Y是指第一组初始位置信息的横坐标和纵坐标，X 1、Y 1分别是指第一信号接收器11的位置信息的横坐标和纵坐标，X 2、Y 2分别是指第二信号接收器11的位置信息的横坐标和纵坐标，X 3、Y 3分别是指第三信号接收器11的位置信息的横坐标和纵坐标。
相似的，通过第二组位置坐标和第二组直线距离，确定对应的第二组初始位置信息。
在得到多组初始位置信息后，对于每组初始位置信息的横坐标进行求平均值，得到触控笔3在显示器5上的触控位置的横坐标，对于每组初始位置信息的纵坐标进行求平均值，得到触控笔3在显示面板51上的触控位置的纵坐标，如此即可得到触控笔3在显示面板51上进行触控操作时的位置信息。
以信息采集器1为光学传感器，且光学传感器采集到图像定位信息为例，在一些实施方式中，显示器5的边缘间隔分布有多个标识物(比如指示灯)，在显示器5上安装多个光学传感器后，可预先根据显示器5的尺寸建立直角坐标系，并确定多个光学传感器在该直角坐标系中的位置坐标，并确定每个光学 传感器与每个标识物之间的实际距离，进而在算法模块2中预先存储有每个光学光学传感器的位置坐标，以及每个光学传感器与每个标识物之间的实际距离，光学传感器采集到的图像定位信息中包含有触控物体(比如手指、触控笔3)和标识物。
如此，在获取到多个光学传感器采集到的图像定位信息后，可对图像定位信息进行二值化处理、去噪处理等操作后，以识别图像定位信息中的触控物体和目标标识物，并确定光学传感器分别与触控物体、目标标识物之间的图像距离，进而结合光学传感器与目标标识物之间的实际距离，通过比例运算，即可确定光学传感器与触控物体之间的实际距离，以得到触控物体在显示器5上的触控位置与多个光学传感器之间的直线距离。再根据每个光学传感器的位置坐标和多个直线距离，确定触控物体在显示面板51上进行触控操作时的触控位置的位置信息。
其中，结合多个光学传感器的位置坐标和对应的多个直线距离确定触控位置的位置信息的方法，可参考上述所述的根据多个信号接收器11的位置坐标和多个直线距离，确定位置信息的方法，本公开实施方式对此不再赘述。
本公开实施方式提供了一种触控定位系统20。如图5或图6所示，触控定位系统20包括：第一处理器41和多个信息采集器1；各信息采集器1用于与显示器5固定连接，且均与第一处理器41通信连接。信息采集器1用于在对显示器5进行触控操作时采集定位信息，第一处理器41包括算法模块2，算法模块2用于获取多个定位信息，并根据多个定位信息确定对显示器5进行触控操作时的位置信息。
本公开实施方式中，在对显示器5进行触控操作时，可通过多个信息采集器1分别采集定位信息并传输至算法模块2，进而由算法模块2根据多个定位信息确定对显示器5进行触控操作时的位置信息，进而便于实现对显示器5的触控操作。
其中，第一处理器41与多个信息采集器1可以为有线连接(比如通过USB线连接)，也可以为无线连接(通过无线电信号连接)，以实现通信，进而实现信息采集器1与第一处理器41之间定位信息的传输。
本公开实施方式中，第一处理器41可以为可以为显示器5自身包括的处 理器，也针对上述算法模块2单独配置的处理器。
当第一处理器41为显示器5自身包括的处理器时，即如图5所示，触控定位系统20还包括显示器5，显示器5包括第一处理器41。此时第一处理器41可根据确定的位置信息控制显示器5执行相应的操作。
其中，第一处理器41可根据位置信息控制显示器5在对应的位置处显示定位图标，以便于用户确定当前触控操作的实际位置。
另外，信息采集器1传输定位信息至第一处理器41时可以同时传输该定位信息的采集时间，或者第一处理器41获取信息采集器1传输的定位信息时，还可以同时生成定位信息对应的采集时间。此时，第一处理器41可根据一个时间段内的多个定位信息确定至少一个位置信息，并确定至少一个位置信息和一一对应的至少一个时间信息，进而可由至少一个位置信息和至少一个时间信息，确定显示器5执行的操作(比如单击对应的操作、双击对应的操作、多指对应的操作、滑动轨迹对应的操作等)。
比如，第一处理器41确定在一个时间段内得到一个位置信息，此时第一处理器41可确定需要控制显示器5执行单击对应的操作；第一处理器41确定在一个时间段内得到两个位置信息，两个位置信息相同或差值较小，且对应的时间信息不同，此时第一处理器41可确定需要控制显示器5执行双击对应的操作；第一处理器41确定在一个时间段内得到两个位置信息，两个位置信息不同，且对应的时间信息相同，此时第一处理器41可确定需要控制显示器5执行双指对应的操作；第一处理器41确定在一个时间段内得到多个位置信息(比如个数大于5、8或10)，多个位置信息不同，且对应的时间信息不同，此时第一处理器41可确定需要控制显示器5执行滑动轨迹对应的操作。
当第一处理器41为单独配置的处理器时，如图6所示，显示器5还包括第二处理器42，第二处理器42分别与第一处理器41通信连接；第二处理器42用于获取位置信息，以控制显示器5执行相应操作。
其中，第一处理器41可固定在显示器5上，也可不与显示器5固定连接，只要第一处理器41与第二处理器42之间能够保持通信即可。
其中，第二处理器42在获取到位置信息后，可根据位置信息控制显示器5在对应的位置处显示定位图标，以便于用户确定当前触控操作的实际位置。
另外，信息采集器1传输定位信息至第一处理器41时可以同时传输该定 位信息的采集时间，或者第一处理器41获取信息采集器1传输的定位信息时，还可以同时生成定位信息对应的采集时间。此时，第一处理器41可根据一个时间段内的多个定位信息确定一个或多个位置信息，并确定一个或多个位置信息分别对应的一个或多个时间信息。也即是，第一处理器41还用于根据多个定位信息确定对显示器5进行触控操作时的至少一个位置信息和一一对应的至少一个时间信息。
如此，第二处理器42可获取至少一个位置信息和一一对应的至少一个时间信息，并根据至少一个位置信息和至少一个时间信息控制所述显示器5执行相应操作。
其中，第二处理器42根据至少一个位置信息和至少一个时间信息控制所述显示器5执行相应操作的具体过程，可参考上述所述的第一处理器41根据至少一个位置信息和至少一个时间信息控制所述显示器5执行相应操作的具体过程，本公开实施方式对此不在赘述。
需要说明的是，对于第一处理器41为单独配置的处理器的情况，第一处理器41可配置为显示器5的后装器件，也即是在现有的无触控功能的显示器5上配置第一处理器41，以实现现有显示器5的触控功能。如此，相对于现有的显示器5，能够避免因对触控操作的需求而更换现有显示器5的情况。当第一处理器41为显示器5自身包括的处理器时，第一处理器41也可配置为显示器5的初装器件，也即是在显示器5的制作过程中配置有第一处理器41，以实现显示器5的触控功能。如此，相对于现有的触控一体机，该触控定位系统20能够最大化节省成本。
本公开实施方式中，信息采集器1可以为光学传感器，此时信息采集器采集的定位信息可以为光学定位信息，也即是定位信息包括光学定位信息。如此，可通过光学传感器采集光学定位信息，并传输至算法模块2，进而由第一处理器41包括的算法模块2根据采集到的多个光学定位信息确定对显示器5进行触控操作时的位置信息；当然，信息采集器1也可以为信号接收器11，此时信息采集器采集的定位信息可以为定位信号，也即是定位信息包括定位信号。如此，可通过信号接收器11接收定位信号(无线电定位信号)，进而由第一处理器41包括的算法模块2根据接收到的多个定位信号的衰减强度确定对显示器5进行触控操作时的位置信息。
其中，对于信息采集器1为光学传感器的情况，光学传感器可以为红外传感器，比如红外摄像头(此时红外摄像头采集的光学定位信息为图像定位信息)，当然也可以为其他传感器，比如可以为声波传感器、光束传感器，只要能够采集到光学定位信息即可，本公开实施方式对此不做限定。
其中，对于信息采集器1为信号接收器11的情况，如图7所示，触控定位系统20还包括触控笔3，触控笔3包括控制器31和信号发射器32；控制器31与信号发射器32电连接，控制器31用于在触控笔3触控显示器5时控制信号发射器32发射定位信号，信息采集器1为信号接收器11，信号接收器11用于采集定位信号，并传输至算法模块2。可选地，信号发射器32和信号接收器11的工作频段相同，且大于或等于2.4GHz，小于或等于2.4835GHz。如此，以保证信号发射器32与信号接收器11之间的信号波具有频率低、波长长的优点。示例地，信号发射器32和信号接收器11具有相同的工作频段，且为2.4GHz。
其中，对于信息采集器1为光学传感器、信号接收器11的两种情况，在确定在显示器5上进行触控操作的位置信息的具体方法，可参考上述实施方式所述，本公开实施方式对此不在赘述。
本公开实施方式中，在触控笔3配合显示器5使用时，为了保证触控笔3的续航能力，如图7所示，显示器5还包括放电电路54，放电电路54用于与触控笔3电连接，以为触控笔3充电。如此，在不使用触控笔3时，可将触控笔3与显示器5的放电电路54电连接，实现对触控笔3的充电。
可选地，放电电路54为无线放电电路54，比如磁吸放电电路54，相应地，结合上述所述，触控笔3包括的充电电路37为磁吸充电电路37。如此，只需要触控笔3的充电电路37包括的磁块与放电电路54包括的磁块进行磁吸，即可实现对触控笔3的充电，从而简化了操作。显示器5具有承载台，如此，可通过承载台承载触控笔3，以避免磁吸力较弱而导致触控笔3脱落的情况。
本公开实施方式中，在触控笔3配合显示器5使用时，为了便于通过触控笔3实现对显示器5的控制操作，如图7所示，显示器5还包括第二通信模块53，第二通信模块53与显示器5自身包括的处理器电连接；第二通信模块53用于接收控制信号，并传输至显示器5自身包括的处理器，显示器5自身包括的处理器用于控制显示器5执行与控制信号相应的操作。
结合上述实施方式所述的示例，触控笔3发送的控制信号可以为打开控制信号、关闭控制信号、确认控制信号。如此，在显示器5的第二通信模块53接收到触控笔3发送的控制信号时，显示器5自身包括的处理器可根据该控制信号打开控制信号、关闭控制信号、确认控制信号控制显示器5执行相应的操作。
结合上述所述，当第一处理器41为单独配置的处理器时，也即是显示器5自身包括第二处理器42，此时第二通信模块53与第二处理器42电连接，以通过第二处理器42接收控制信号，并控制显示器5执行与控制信号相应的操作；当第一处理器41为显示器5自身包括的处理器时，第二通信模块53与第一处理器41电连接，以通过第一处理器41接收控制信号，并控制显示器5执行与控制信号相应的操作。
本公开实施方式中，触控定位系统20包括的信息采集器1的个数可以为2个，也可以为2个以上。
当触控定位系统20包括2个信息采集器1时，显示器5呈矩形，两个信息采集器1间隔固定在显示器5的同一侧边，且两个信息采集器1中的至少一者位于显示器5的角部。
当触控定位系统20包括3个或3个以上信息采集器1时，多个信息采集器1所在位置的连线能够围成多边形。例如，多个信息采集器1能够围成三角形、四边形矩形或菱形、五边形等。
以多个信息采集器1能够围成矩形为例，此时触控定位系统20包括四个信息采集器1，且四个信息采集器1分别安装在显示器5的四个角部。
在一些实施方式中，如图5或图6所示，显示器5包括显示面板51和包覆在显示面板51边缘的边框52，信息采集器1固定在边框52的外壁，且各信息采集器1的采集端凸出显示面板51的显示面。
其中，信息采集器1可以为外置式安装，同时保证信息采集器1能够采集到位置信息，如此不会影响显示器5的制作；当然信息采集器1也可以为内置式安装，如此可对显示器5的结构进行调整，以便于在显示器5的制作过程中完成信息采集器1的安装。
在一些实施方式中，显示器5包括显示面板51，多个信息采集器1固定在显示面板51的显示面的边缘。
其中，信息采集器1可以是可拆卸的固定在显示面板51上。如此，为了便于后续用户对信息采集器1的安装，显示面板51在显示画面时，可显示固定标识，以保证信息采集器1的位置安装的精准性。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由所附的权利要求指出。

Claims (20)

  1. 一种触控系统，其中，包括：
    多个信息采集器，用于固定在显示器的外表面，且各所述信息采集器用于在对所述显示器进行触控操作时采集定位信息；
    算法模块，与多个所述信息采集器通信连接，且用于获取多个所述定位信息，并根据多个所述定位信息确定对所述显示器进行触控操作时的位置信息。
  2. 如权利要求1所述的触控系统，其中，所述信息采集器为光学传感器，所述定位信息包括光学定位信息；
    所述光学传感器用于采集光学定位信息，并传输至所述算法模块，所述算法模块用于根据多个所述光学定位信息确定所述位置信息。
  3. 如权利要求1所述的触控系统，其中，所述触控系统还包括触控笔，所述触控笔包括控制器和信号发射器，所述定位信息包括定位信号；
    所述控制器与所述信号发射器电连接，所述控制器用于在所述触控笔触控所述显示器时控制所述信号发射器发射定位信号，所述信息采集器为信号接收器，所述信号接收器用于接收所述定位信号并传输至所述算法模块，所述算法模块用于根据多个所述定位信号的信号衰减强度确定所述位置信息。
  4. 如权利要求3所述的触控系统，其中，所述信息发射器和所述信号接收器的工作频段相同，且大于或等于2.4GHz，小于或等于2.4835GHz。
  5. 如权利要求3或4所述的触控系统，其中，所述触控笔还包括控制开关；
    所述控制开关分别与所述控制器、所述信号发射器电连接，所述控制开关能够在所述触控笔触控所述显示器时保持在导通状态，所述控制器用于在所述控制开关导通时控制所述信号发射器发射定位信号。
  6. 如权利要求5所述的触控系统，其中，所述触控笔包括笔身，所述笔身的笔尖位置具有通孔；
    所述控制开关为压力感应开关，且具有压力感应端，所述压力感应开关位 于所述笔身内部，所述压力感应端的至少部分伸出所述通孔。
  7. 如权利要求1所述的触控系统，其中，所述算法模块被配置为：
    获取多个所述信息采集器采集的定位信息；根据多个所述定位信息分别确定对所述显示器进行触控操作时的触控位置与多个所述信息采集器之间的直线距离；根据多个所述直线距离确定所述触控位置的位置信息。
  8. 如权利要求1或7所述的触控系统，其中，所述触控系统包括处理器，所述处理器包括所述算法模块。
  9. 一种触控定位系统，其中，所述触控定位系统包括：
    第一处理器；
    多个信息采集器，各所述信息采集器用于与显示器固定连接，且均与所述第一处理器通信连接；
    所述信息采集器用于在对所述显示器进行触控操作时采集定位信息，所述第一处理器包括算法模块，所述算法模块用于获取多个所述定位信息，并根据多个所述定位信息确定对所述显示器进行触控操作时的位置信息。
  10. 如权利要求9所述的触控定位系统，其中，所述触控定位系统包括显示器；
    所述显示器包括所述第一处理器，所述第一处理器用于根据所述位置信息控制所述显示器执行相应操作。
  11. 如权利要求9所述的触控定位系统，其中，所述触控定位系统包括显示器；
    所述显示器包括第二处理器，所述第二处理器与所述第一处理器通信连接，所述第二处理器用于获取所述位置信息，以控制所述显示器执行相应操作。
  12. 如权利要求11所述的触控定位系统，其中，所述第一处理器还用于根据多个所述定位信息确定至少一个所述位置信息和一一对应的至少一个时间信息，所述第二处理器用于获取至少一个所述位置信息和至少一个所述时间信 息，并根据至少一个所述位置信息和至少一个所述时间信息控制所述显示器执行相应操作。
  13. 如权利要求10-12任一所述的触控定位系统，其中，所述显示器呈矩形，所述触控定位系统包括2个所述信息采集器；
    两个所述信息采集器间隔固定在所述显示器的同一侧边，且两个所述信息采集器中的至少一者位于所述显示器的角部。
  14. 如权利要求10-12任一所述的触控定位系统，其中，所述触控定位系统包括3个或3个以上所述信息采集器，且多个所述信息采集器所在位置的连线能够围成多边形。
  15. 如权利要求10-12任一所述的触控定位系统，其中，所述显示器包括显示面板和包覆在所述显示面板边缘的边框；
    多个所述信息采集器固定在所述边框的外壁，且各所述信息采集器的采集端凸出所述显示面板的显示面。
  16. 如权利要求10-12任一所述的触控定位系统，其中，所述显示器包括显示面板，多个所述信息采集器固定在所述显示面板的显示面的边缘。
  17. 如权利要求9-12任一所述的触控定位系统，其中，所述信息采集器为光学传感器，所述定位信息包括光学定位信息；
    所述光学传感器用于采集光学定位信息，并传输至所述算法模块，所述算法模块用于根据多个所述光学定位信息确定所述位置信息。
  18. 如权利要求10-12任一所述的触控定位系统，其中，所述触控系统还包括触控笔，所述触控笔包括控制器和信号发射器，所述定位信息包括定位信号；
    所述控制器与所述信号发射器电连接，所述控制器用于在所述触控笔触控所述显示器时控制所述信号发射器发射定位信号，所述信息采集器用于采集所述定位信号，并传输至所述算法模块，所述算法模块用于根据多个所述定位信号的信号衰减强度确定所述位置信息。
  19. 如权利要求18所述的触控系统，其中，所述信息发射器和所述信号接收器的工作频段相同，且大于或等于2.4GHz，小于或等于2.4835GHz。
  20. 如权利要求18所述的触控定位系统，其中，所述显示器还包括放电电路，所述放电电路用于与所述触控笔电连接，以为所述触控笔充电。
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