TW202034140A - Touch device and active-passive touch system capable of charging and supplying power to the stylus that the user is using - Google Patents

Abstract

The present invention relates to a touch device and an active-passive touch system having the touch device. The touch device includes a touch interface and a device processing unit. When the touch interface generates a passive touch signal, the device processing unit executes an initial touch function, and continuously sends a charging signal through the touch interface within a first time period. Therefore, in addition to execution of the initial touch function to allow the user to perform touch operations, the device processing unit further continuously sends a charging signal within the first time period, so as to charge and supply power to the active-passive stylus that the user is using, such that, when there is no power storage, the active-passive stylus can receive enough power to be started normally after the user has used it for a period of time.

Description

Touch device and active and passive touch system

The present invention is a touch device and a touch system, in particular a touch device and an active and passive touch system.

Generally speaking, a touch device can be roughly divided into passive touch devices and active touch devices. Passive touch devices use multiple scan lines in a touch area, and send scan signals to the scan lines through a controller to detect whether a passive touch object touches the touch area . The physical position of the scan line is used to determine the position where the passive touch object touches the touch area.

An active touch device generally receives a wireless touch signal sent by an active touch object, and the active touch device determines whether there is a wireless touch signal sent by the active touch object in a scanning area. When the wireless touch signal is scanned, the position of the active touch object is determined according to the wireless touch signal. Generally speaking, the wireless touch signal generated by the active touch object contains a communication data. When the active touch device receives the wireless touch signal, the active touch device must The communication data in the signal is decoded and analyzed to further execute the corresponding touch function according to the communication data in the wireless touch signal. For example, the active touch device can determine whether the current touch function to be executed is a pen function or an eraser function according to the communication data in the wireless touch signal, or judge according to the communication data in the wireless touch signal The current pen pressure size.

However, since the active touch object must be powered by a battery unit to maintain normal operation, when the battery unit is dead, it must be charged or the battery unit must be directly replaced. If the user is running out of power during touch operations , The user must stop to recharge or replace the battery, which is quite inconvenient for the user.

In view of this, the main purpose of the present invention is to provide a touch device and an active and passive touch system, which can avoid the situation that the active and passive stylus is out of power during touch operations.

The touch device includes: a touch interface; a device processing unit electrically connected to the touch interface, and the device processing unit determines whether the touch interface generates a passive touch signal; wherein when the touch interface generates When the passive touch signal is used, the device processing unit executes an initial touch function, and continuously sends a charging signal through the touch interface for a first time.

The active and passive touch system includes: a touch device as described above; an active and passive stylus, which includes: 　　 a housing formed with an internal space and a touch terminal; 　　 a conductive stylus tip , Arranged on the touch terminal of the casing; 　　 a signal transceiver module arranged in the inner space of the casing near the touch terminal; 　　 a processing unit with an active signal output terminal, the active signal output terminal is electrically connected to the signal Transceiver module; 　　 a capacitor unit electrically connected to the processing unit; 　　 a charging circuit unit electrically connected to the signal transceiver module and the capacitor unit; 　　 wherein when the processing unit is activated, the processing unit determines whether a first condition is met; When the first condition is met, the processing unit generates an active signal and transmits it to the signal transceiver module through the active signal output terminal, and the signal transceiver module sends the active signal.

The signal transceiver module can receive electromagnetic energy generated by the scanning signal from the touch device, that is, the electromagnetic signal, as an energy source, and charge the capacitor unit through the charging loop unit.

And when the touch interface generates the passive touch signal, it means that the user is performing a touch operation on the touch device. Therefore, when the device processing unit generates the passive touch signal on the touch interface, in addition to executing the initial In addition to the touch function for the user to perform touch operations, the charging signal is further continuously sent for the first time, thereby charging the active and passive stylus that the user is using to provide power to the active and passive stylus The stylus allows the capacitive unit of the active and passive stylus to be activated normally after the user has used it for a period of time without power storage.

In addition, the active and passive stylus can receive electromagnetic energy generated when the scanning signal is sent from the touch device, that is, the charging signal, as a power source to charge the capacitor unit, even when the capacitor of the active and passive stylus When the unit has no power storage, when the user uses it for a period of time, the active and passive stylus can store enough power to activate the processing unit, and when the processing unit meets the first condition, the active Signal, and sent through the signal transceiver module. In other words, when the capacitor unit is out of power, the user does not need to recharge or replace the battery, and can be used normally, which improves the convenience of use.

The following describes the technical means adopted by the present invention to achieve the predetermined purpose in conjunction with the drawings and preferred embodiments of the present invention.

Please refer to FIG. 1 and FIG. 2, the present invention provides a touch device 10 and an active and passive touch system 100. The touch device 10 includes a touch interface 11 and a device processing unit 12.

The device processing unit 12 is electrically connected to the touch interface 11, and the device processing unit determines whether the touch interface 11 generates a passive touch signal. When the touch interface 11 generates the passive touch signal, the device processing unit 12 executes an initial touch function, and continuously sends a charging signal through the touch interface 11 for a first time.

Since when the touch interface 11 generates the passive touch signal, it means that the user is performing a touch operation on the touch device 10. Therefore, the device processing unit 12 of the touch device 10 generates the passive touch signal on the touch interface 11. When the touch signal is touched, in addition to executing the initial touch function for the user to perform touch operations, the charging signal is further sent continuously for the first time, so as to perform the control on the active and passive stylus that the user is using. Charging is used to provide power to the active and passive stylus, so that the capacitive unit of the active and passive stylus can be activated normally after the user has used it for a period of time without power storage.

In this preferred embodiment, the initial touch function can be click, gesture, or read the coordinate position of the touch point.

In addition, please further refer to FIG. 3, in the first preferred embodiment of the touch device 10, when the device processing unit 12 executes the initial touch function (S302), the device processing unit 12 is first initialized After a timer time (S303), the charging signal is continuously sent through the touch interface 11 during the first time (S304), and it is further determined whether the touch interface 11 receives an active signal (S305).

When the touch interface 11 does not receive the active signal, the device processing unit 12 further determines whether the timing time exceeds a second time (S306). When the timing time does not exceed the second time, the device processing unit 12 re-determines whether the touch interface receives the active signal (S305).

When the timing time exceeds the second time, the device processing unit 12 continues to execute the initial touch function (S308).

Furthermore, when the touch interface 11 receives the active signal, the device processing unit 12 generates a first function switching signal according to the active signal, and executes a first touch according to the first function switching signal. Function (S307).

When the active and passive stylus 20 cannot be activated due to insufficient power, the active signal will not be sent for the touch device 10 to receive. Therefore, the touch device 10 will first perform when the timing time does not exceed the preset time. , Re-determine whether the touch interface 11 receives the active signal, and when the timing time exceeds the preset time, the device processing unit 12 will resend the charging signal. This avoids the situation that the active and passive touch 20 cannot be activated due to insufficient power received.

Please refer to FIG. 4, in the second preferred embodiment of the touch device 10, when the touch interface 11 receives the active signal, the device processing unit 12 executes the corresponding touch function according to the active signal (S408).

In the preferred embodiment, the active signal can be a single fixed frequency signal, a combined frequency signal, a frequency conversion signal, or a data packet signal.

For example, the active signal can be two single fixed-frequency signals with different frequencies, depending on the switching state of an active and passive stylus 20 used in conjunction with the processing control device 10. In other words, the active and passive stylus 20 can generate active signals of different frequencies according to its switching state.

After the touch device 10 receives the active signal, the touch device 10 only needs to determine the frequency of the active signal, and then can perform different touch functions according to the frequency of the active signal. For example, when the frequency of the active signal is the first frequency, the device processing unit 12 executes the first touch function. When the frequency of the active signal is the second frequency, the device processing unit 12 executes the second touch function. In this way, the device processing unit 12 of the touch device 10 does not need to decode and analyze the active signal, and the device processing unit 12 of the touch device 10 can reduce a large amount of processing burden, thereby improving efficiency.

In this preferred embodiment, the first touch function can be a writing function, which displays the movement track of the touch position with black lines, thereby providing the user with the function of writing on the touch interface 11. The second touch function can be an eraser function, which removes the black line displayed on the movement track of the touch position, thereby providing the user with the function of removing handwriting.

Furthermore, when the touch interface generates the touch signal, the device processing unit first determines whether a sensing amount of the touch signal is greater than a threshold (S402), and when the sensing amount of the touch signal is greater than the threshold At this time, the device processing unit executes the initial touch function (S403).

In this way, it is possible to prevent the sensing amount of the touch interface 12 from fluctuating due to noise fluctuations, thereby causing misjudgment of the generation of passive touch signals.

In addition, please refer to FIGS. 2 and 5A. The active and passive touch system 100 includes the above-mentioned touch device 10 and the active and passive stylus 20. The content of the touch device 10 has been described in the above paragraph. , So I won’t repeat it here. The active and passive stylus 20 includes a housing 21, a conductive stylus tip 22, a signal transceiver module 23, a processing unit 24, a capacitor unit 25 and a charging circuit unit 26.

The housing 21 forms an inner space 210 and has a touch terminal 211. The conductive stylus head 22 is disposed on the touch terminal 211 of the casing 21. The signal transceiving module 23 is disposed in the internal space 210 of the housing 21 close to the touch terminal 211. The processing unit 24 has an active signal output terminal, and the active signal output terminal is electrically connected to the signal transceiver module 23. The capacitor unit 25 is electrically connected to the processing unit 24. The charging circuit unit 26 is electrically connected to the signal transceiver unit 23 and the capacitor unit 25.

After the processing unit 24 is activated, the processing unit 24 determines whether a first condition is satisfied. And when the first condition is met, the processing unit 24 generates an active signal and transmits it to the signal transceiver module 23 through the active signal output terminal, and the signal transceiver module 23 sends the active signal.

That is, the active and passive stylus 20 can receive the charging signal sent from the touch device 10 as a power source to charge the capacitor unit 25, even if the capacitor unit 25 of the active and passive stylus 20 has no power storage. In the state, when the user uses for a period of time, the active and passive stylus 20 can store enough power to activate the processing unit 24, and the processing unit 24 will generate the active signal when the first condition is met , And sent by the signal transceiver unit 23. Therefore, when the capacitor unit 25 is out of power, the user does not need to recharge or replace the battery, and only needs to use the touch interface 11 of the touch device 10 for a period of time to obtain sufficient power for The active and passive stylus 20 can be used normally, thereby improving the convenience of using the active and passive stylus 20.

Please further refer to FIG. 5B. In a first preferred embodiment of the active and passive stylus 20, the signal transceiver module 23 of the active and passive stylus 20 includes an antenna unit 231 and a switching unit 232. The antenna unit 231 is disposed in the inner space 210 of the housing 21 close to the touch terminal 211. The switching unit 232 has a common terminal, a first connection terminal, a second connection terminal, and a control terminal. The common terminal is electrically connected to the antenna unit 231, and the common terminal of the switching unit 232 is connected to the second connection end.

The processing unit 24 further includes a control signal output terminal. The active signal output terminal of the processing unit 24 is electrically connected to the first connection terminal of the switch unit 232 of the signal transceiver module 23, and the control signal output terminal is electrically connected to the switch The control end of the unit 232. The charging circuit unit 26 is electrically connected to the second connection terminal of the switching unit 232 of the signal transceiver module 23.

Please also refer to FIG. 6. In this preferred embodiment, after the processing unit 24 is started (S601), the processing unit 24 determines whether the first condition is satisfied (S602). When the first condition is met, the processing unit 24 generates a first signal and transmits it to the control terminal of the switching unit 232 through the control signal output terminal to control the common terminal of the switching unit 232 to switch and connect to the first connection terminal (S603), and the processing unit 24 further generates the active signal to be transmitted to the first connection terminal of the switching unit 232 through the active signal output terminal, and transmits the active signal from the antenna unit 231 through the switching unit 232 (S604) .

When the processing unit 24 sends the active signal from the antenna unit 231 through the switching unit 232, the processing unit 24 stops generating the first signal, so that the common terminal of the switching unit 232 is electrically connected back to the second connection terminal (S605).

In this way, even when the capacitive unit 26 of the active and passive stylus 20 has no power storage, when the user uses it for a period of time, the active and passive stylus 20 can store enough power to activate the processing unit. 25, and when the processing unit 25 satisfies the first condition, it will generate the first signal to control the common terminal of the switching unit 24 to switch and connect to the first connection terminal so that the active signal generated by the processing unit 25 can pass through the The switching unit 24 is transmitted by the antenna unit 23.

In addition, since the active and passive stylus 20 has the conductive stylus tip 22, when the conductive stylus tip 22 of the active and passive stylus 20 contacts the touch interface 11 of the touch device 10, the touch interface 11 can sense the position where the conductive stylus tip 22 of the active and passive stylus 20 touches the touch interface 11 according to the change in capacitance value, thereby identifying the position of the touch to perform corresponding functions, such as clicking or Gesture, or read the coordinate position of the touch point.

Please also refer to FIG. 7. In this preferred embodiment, when the processing unit 24 determines whether the first condition is satisfied, the processing unit 24 first determines whether the voltage of the capacitor unit 25 exceeds a first threshold. (S702). When the voltage of the capacitor unit 25 exceeds the first threshold, the processing unit 24 determines that the first condition is satisfied. Then, the processing unit 24 generates the first signal and transmits it to the control terminal of the switching unit 232 through the control signal output terminal, so as to control the common terminal of the switching unit 232 to switch and connect to the first connection terminal (S703), and the The processing unit 24 further generates the active signal to be transmitted to the first connection terminal of the switching unit 232 through the active signal output terminal, and transmits the active signal from the antenna unit 231 through the switching unit 232 (S704).

After the processing unit 24 sends the active signal from the antenna unit 231 through the switching unit 232, the processing unit 24 further determines whether the voltage of the capacitor unit 25 is lower than a second threshold (S705). And when the voltage of the capacitor unit 25 is lower than the second threshold, the processing unit 24 stops generating the first signal, so that the common terminal of the switching unit is electrically connected back to the second connection terminal.

Please refer to FIG. 8. In another preferred embodiment, when the processing unit is started (S801), the processing unit 24 first initializes a charging time (S802), and determines whether the charging time exceeds a third time (S803), when the charging time exceeds the third time, the processing unit 24 determines that the first condition is satisfied. Then, the processing unit 24 generates the first signal to control the common terminal of the switching unit 232 to connect to the first connection terminal, and the processing unit 24 further generates the active signal to send to the touch device 10 for the touch device 10 generates the function switching signal according to the active signal, thereby switching the touch function executed by the touch device 10. For example, the movement track of the touch position is displayed with a black line to provide the user with the function of writing on the touch interface 11.

Furthermore, referring to FIG. 2, the active touch pen 20 further includes a switch 27, and the switch 27 is electrically connected to the processing unit 24. When the switching state of the switch 27 is in a first state, and when the processing unit 24 is activated, the processing unit 24 generates the active signal with a first frequency. When the switching state of the switch 27 is in a second state, and when the processing unit 24 is activated, the processing unit 24 generates the active signal with a second frequency.

For example, the switch 27 of the active and passive stylus 20 may be a toggle switch provided on the housing 21 of the active and passive stylus 20. When the switch button of the toggle switch is turned to a first position, the switching state of the toggle switch is the first state, and when the toggle switch is turned to a second position, the toggle switch The switching state of the switch is the second state. In this way, the processing unit 24 of the active and passive stylus 20 can generate active signals of different frequencies according to the switching state of the switch 27.

When the touch interface 11 of the touch device 10 receives the active signal, the device processing unit 13 of the touch device 10 can determine the touch function to be switched by determining the frequency of the active signal. For example, when the frequency of the active signal is the first frequency, the device processing unit 13 of the touch device 10 changes to execute the first touch function according to the generated function switching signal. When the frequency of the active signal is the second frequency, the device processing unit 13 of the touch device 10 changes to execute a second touch function according to the generated function switching signal.

Further, please refer to FIG. 5C. In a second preferred embodiment of the active and passive stylus 20, the signal transceiving module 23 of the active and passive stylus 20 includes a first antenna Unit 233 and a second antenna unit 234. The active signal output end of the processing unit 24 is electrically connected to the first antenna unit 233 of the signal transceiver module 23. The charging loop unit 26 is electrically connected to the second antenna unit 234 of the signal transceiver module 23. The processing unit 24 sends the active signal through the first antenna unit 233, and the charging loop unit 26 receives the charging signal sent by the touch device 10 through the second antenna unit 234.

In this preferred embodiment, when the processing unit 24 determines that the first condition is satisfied, the processing unit 24 can directly send the active signal through the first antenna unit 233. In addition, since the second antenna unit 234 can receive the charging signal sent by the touch device 10, the active stylus device 20 can receive the charging signal sent by the touch device 10 to charge the capacitor unit, so that the The active stylus device 20 can have enough power to activate the processing unit 24 and then send the active signal for touch operation.

The above are only the preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed in the preferred embodiments as above, it is not intended to limit the present invention. Anyone familiar with the professional technology Personnel, without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make slight changes or modification into equivalent embodiments with equivalent changes, but any content that does not depart from the technical solution of the present invention, according to the present invention The technical essence of any simple modification, equivalent change and modification made to the above embodiments still fall within the scope of the technical solution of the present invention.

100: Active and passive touch system 10: Touch device 11: Touch interface 12: Device processing unit 20: Active and passive stylus 21: Housing 210: Internal space 211: Touch terminal 22: Conductive stylus tip 23: Signal transceiver module 231: antenna unit 232: switch unit 233: first antenna unit 234: second antenna unit 24: processing unit 25: capacitor unit 26: charging circuit unit 27: switch

FIG. 1 is a schematic diagram of the use of a preferred embodiment of the active and passive touch system of the present invention. 2 is a block diagram of a preferred embodiment of the active and passive touch system of the present invention. FIG. 3 is a flowchart of the execution steps of the first preferred embodiment of the touch device of the present invention. 4 is a flowchart of the execution steps of the second preferred embodiment of the touch device of the present invention. 5A is a block diagram of a preferred embodiment of the active and passive stylus of the present invention. 5B is a block diagram of the first preferred embodiment of the active and passive stylus of the present invention. 5C is a block diagram of the second preferred embodiment of the active and passive stylus of the present invention. 6 is a flowchart of the execution steps of the first preferred embodiment of the active and passive stylus of the present invention. FIG. 7 is a flowchart of execution steps of the second preferred embodiment of the active and passive stylus of the present invention. 8 is a flowchart of the execution steps of the third preferred embodiment of the active and passive stylus of the present invention.

10: Touch device

11: Touch interface

12: Device processing unit

20: Active and passive stylus

23: Signal transceiver module

24: processing unit

25: Capacitor unit

26: Charging circuit unit

27: Toggle switch

Claims (10)

A touch device includes: a touch interface; a device processing unit electrically connected to the touch interface, and the device processing unit determines whether the touch interface generates a passive touch signal; When the interface generates the passive touch signal, the device processing unit executes an initial touch function, and continuously sends a charging signal through the touch interface for a first time. The touch device according to claim 1, wherein when the device processing unit executes the initial touch function, the device processing unit first initializes a timing time, and then continuously sends through the touch interface during the first time The charging signal and further determine whether the touch interface receives an active signal; wherein when the touch interface does not receive the active signal, the device processing unit further determines whether the timing time exceeds a second time; When the timing time does not exceed the second time, the device processing unit re-determines whether the touch interface receives the active signal. The touch device according to claim 2, wherein when the timing time exceeds the second time, the device processing unit continues to execute the initial touch function. The touch device according to claim 2 or 3, wherein when the touch interface receives the active signal, the device processing unit generates a first function switching signal according to the active signal, and according to the first function switching signal Perform a first touch function instead. The touch device according to any one of claim items 1 to 3, wherein when the touch interface generates the touch signal, the device processing unit first determines whether a sensing amount of the touch signal is greater than a threshold, and When the sensing amount of the touch signal is greater than the threshold, the device processing unit executes the initial touch function. An active and passive touch system, comprising: the touch device as described in any one of claim 1 to 5; an active and passive stylus, comprising: 　　 a casing forming an internal space, and It has a touch terminal; 　　 a conductive stylus pen tip is arranged on the touch terminal of the casing; 　　 a signal transceiver module is arranged in the inner space of the casing near the touch terminal; 　　 a processing unit with an active signal output The active signal output terminal is electrically connected to the signal transceiver module; 　　 a capacitor unit, electrically connected to the processing unit; 　　 a charging circuit unit, electrically connected to the signal transceiver module and the capacitor unit; 　　 when the processing unit is activated, The processing unit judges whether a first condition is met; 　　 wherein when the first condition is met, the processing unit generates an active signal and transmits it to the signal transceiver module through the active signal output terminal, and the signal transceiver module sends the signal Active signal. The active and passive touch system according to claim 6, wherein the signal transceiving module of the active and passive stylus includes: an antenna unit disposed in the inner space of the casing near the touch terminal; and a switching unit having A common terminal, a first connection terminal, a second connection terminal, and a control terminal, the common terminal is electrically connected to the antenna unit; wherein the common terminal of the switching unit is connected to the second connection terminal; wherein the processing unit further It includes a control signal output terminal, and the active signal output terminal of the processing unit is electrically connected to the first connection terminal of the switching unit of the signal transceiver module, and the control signal output terminal is electrically connected to the control terminal of the switching unit; The charging loop unit is electrically connected to the second connection terminal of the switching unit of the signal transceiver module; wherein when the first condition is met, the processing unit first generates a first signal and transmits it to the switching unit through the control signal output terminal The control terminal of the switching unit controls the common terminal of the switching unit to switch to the first connection terminal, and the processing unit further generates the active signal through the active signal output terminal and transmits it to the first connection terminal of the switching unit, and passes the The switching unit sends the active signal from the antenna unit; The active and passive touch system according to claim 7, wherein when the processing unit determines whether the first condition is satisfied, the processing unit first determines whether the voltage of the capacitor unit exceeds a first threshold; 　　 is the capacitor unit When the voltage exceeds the first threshold, the processing unit determines that the first condition is satisfied; wherein after the processing unit of the active and passive stylus sends the active signal from the antenna unit through the switching unit, the processing unit further determines Whether the voltage of the capacitor unit is lower than a second threshold; 　　 wherein when the processing unit determines that the voltage of the capacitor unit is lower than the second threshold, the processing unit stops generating the first signal, so that the common terminal of the switching unit Electrically connect back to the second connection end. The active and passive touch system according to claim 7, wherein when the processing unit is started, the processing unit first initializes a charging time, and determines whether the charging time exceeds a third time; 　　 wherein when the charging time exceeds the first time At three times, the processing unit determines that the first condition is satisfied. The active and passive touch system according to claim 6, wherein the signal transceiver module of the active and passive stylus includes: a first antenna unit; wherein the active signal output terminal of the processing unit is electrically connected to the signal The first antenna unit of the transceiver module, and the processing unit sends the active signal through the first antenna unit; and a second antenna unit; wherein the charging loop unit is electrically connected to the second antenna unit of the signal transceiver module An antenna unit, and the charging loop unit receives the charging signal sent by the touch device through the second antenna unit.

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