TWI743534B - Touch system, its touch device and input device, and its signal transmission method - Google Patents

Abstract

The present invention relates to a touch system and its signal transmission method. The touch system has a touch device and an input device. The touch system executes a first mode and a second mode at different times. In the first mode, the touch device transmits a modulation signal to drive the touch electrodes and to be used as an uplink signal. The input device receives the modulation signal. In the second mode, the touch device receives the downlink signal from the input device. Thus, the touch device do not have to transmit the driving signal and the uplink signal at different times. Then the time is saved for the rest work periods so that every work periods get longer length of time.

Description

Touch control system, its touch control device and input device, and its signal transmission method

The present invention relates to a touch control system and a signal transmission method thereof, in particular to a touch control system with a two-way communication touch device and an input device.

In the prior art touch control system, the touch device and the input device cooperate with each other, so that the user can control the touch device through the finger or the input device. In the prior art, the input device can be one-way sending of messages or two-way Receive and send messages.

Taking a two-way stylus with a touch device as an example, the touch device executes the detection of the finger and the two-way stylus in a time-sharing manner. When performing finger detection, the touch device sends a driving signal to the electrode unit, and then samples the electrode unit to perform capacitive sensing to detect the touch information of the finger; when performing a two-way stylus detection, the touch device The electrode unit sends the uplink signal first, and then the electrode unit detects the downlink signal of the bidirectional stylus. When the bidirectional stylus receives the uplink signal, the bidirectional stylus returns the downlink signal to synchronize with the touch device . Therefore, for the electrode unit, the work cycle must be divided into different work periods for detecting the finger and the two-way stylus, and the work cycle time is fixed, so the more work periods are divided, the more work periods will make each work period The time that can be allocated becomes shorter, which leads to insufficient detection time, which in turn affects the user experience.

In view of this, the present invention aims to improve the signal transmission method of the prior art in order to improve the user experience.

In order to achieve the objective of the present invention, the present invention provides a signal transmission method of a touch control system, wherein the touch control system includes a touch control device and an input device, and the touch control device has a touch operation area and a plurality of A first electrode unit, a plurality of second electrode units, and a control unit. The method includes the following steps: the touch device executes a first mode and a second mode in time sharing, and in the first mode, the touch The control unit of the device drives the first electrode unit with a modulation signal, and at the same time, the control unit also sends the modulation signal as an uplink signal to the input device through the first electrode unit, in the second mode The touch control device receives the downstream signal sent from the input device through the first electrode unit and the second electrode unit.

On the other hand, the present invention also provides a touch system, which includes: a touch device including a touch operation area, a plurality of first electrode units, a plurality of second electrode units, and a control unit. An electrode unit and a second electrode unit are arranged under the touch operation area along different directions, and are electrically connected to the control unit; and an input device including a controller and an electrode group, the electrode group and the The controller forms an electrical connection; wherein the touch device has a first mode and a second mode. In the first mode, the control unit of the touch device drives the first electrode unit with a modulated signal, and at the same time The control unit also sends the modulated signal as an uplink signal to the input device through the first electrode unit. In the second mode, the touch device receives data from the first electrode unit and the second electrode unit. The input device transmits the downstream signal through the electrode group.

On the other hand, the present invention also provides a signal transmission method for a touch device, wherein the touch device includes a touch operation area, a plurality of first electrode units, a plurality of second electrode units, and A control unit for the touch device to execute a first mode. In the first mode, the control unit of the touch device drives the first electrode unit with a modulated signal, and transfers the first electrode unit through the first electrode unit The modulated signal is sent as an uplink signal.

On the other hand, the present invention also provides a touch device, which includes a plurality of first electrode units, a plurality of second electrode units, and a control unit. The first electrode unit and the second electrode unit are arranged in different directions along different directions. The touch operation area is underneath and is electrically connected to the control unit; wherein the touch device has a first mode. In the first mode, the control unit of the touch device drives the touch control unit with a modulation signal. The first electrode unit, and the modulation signal is sent as an uplink signal through the first electrode unit.

Therefore, the present invention uses the modulated signal as the driving signal and the uplink signal. The touch device does not need to send the driving signal and the uplink signal time-sharing, so it frees up time for other working phases, and thus has a limited working cycle time. , So that each different work stage can be allocated more time to execute.

10: Touch device

11: Touch operation area

111: District 1

112: Second District

12: The first electrode unit

13: The second electrode unit

14: Control unit

20, 20A: input device

21: Controller

22, 22A: Electrode group

220: Sending and receiving electrode unit

221A: third electrode unit

222A: Fourth electrode unit

1A is a schematic diagram of the touch system of the present invention; FIG. 1B is a block diagram of some elements of the input device of the present invention; FIG. 2A is a schematic diagram of another embodiment of the touch system of the present invention; FIG. 2B is a schematic diagram of another embodiment of the touch system of the present invention The block diagram of some components of another embodiment of the input device; FIG. 3 is a diagram of the modulation signal sent by the touch system of the present invention.

4 is a schematic diagram of signal transmission in the first embodiment of the signal transmission method of the present invention; FIG. 5 is a schematic diagram of signal transmission in the second embodiment of the signal transmission method of the present invention; FIG. 6 is the third embodiment of the signal transmission method of the present invention Schematic diagram of signal transmission of the embodiment; FIG. 7 is a schematic diagram of signal transmission in the fourth embodiment of the signal transmission method of the present invention; FIG. 8 is a schematic diagram of signal transmission in the fifth embodiment of the signal transmission method of the present invention; FIG. 9 is the sixth embodiment of the signal transmission method of the present invention Fig. 10 is a schematic diagram of signal transmission in the seventh embodiment of the signal transmission method of the present invention; Fig. 11 is a schematic diagram of signal transmission in the eighth embodiment of the signal transmission method of the present invention; Fig. 12 is a schematic diagram of signal transmission in the eighth embodiment of the signal transmission method of the present invention FIG. 13 is a schematic diagram of the second embodiment of the signal transmission method of the present invention; FIG. 14 is a schematic diagram of the third embodiment of the signal transmission method of the present invention.

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

Please refer to FIG. 1A. The touch control system of the present invention includes a touch device 10 and an input device 20.

The aforementioned touch device 10 includes a touch operation area 11, a plurality of first electrode units 12, a plurality of second electrode units 13 and a control unit 14. The first electrode unit 12 and the second electrode unit 13 are arranged under the touch operation area 11 along different directions, and the control unit 14 respectively forms the first electrode unit 12 and the second electrode unit 13 connect.

Please refer to FIG. 1A and FIG. 1B. The aforementioned input device 20 includes a controller 21 and an electrode group 22. The electrode group 22 is electrically connected to the controller 21. In this embodiment, the input device 20 uses a stylus as an example, but it is not limited to this. In one embodiment (as shown in FIG. 1A and FIG. 1B), the electrode set 22 includes a transmitting and receiving electrode unit 220, and the transmitting and receiving electrode unit 220 respectively performs the transmission and a modulation of a downstream signal in a time-sharing manner. The reception of a variable signal; in another embodiment (as shown in FIG. 2A and FIG. 2B) the electrode group 22A includes a third electrode unit 221A and a fourth electrode unit 222A. The input device 20A transmits the downstream signal through the third electrode unit 221A, and receives the modulation signal through the fourth electrode unit 222A.

The touch control system executes two modes in a time-sharing manner. In a first mode, the touch device 10 uses the modulated signal as a driving signal to drive the first electrode unit 12, and the modulated signal also serves as an uplink signal through the first electrode unit 12 Send to the input device 20, and receive the sensing signal through the second electrode unit 13, and sense whether a finger touches the touch operation area 11 through the capacitance change, so as to know the position of the finger or other senses. In addition, the input device 20 receives the modulation signal from the touch device 10 through the electrode set 22; and in a second mode, the touch device 10 uses the first electrode unit 12 The second electrode unit 13 receives the downstream signal from the input device 20, thereby knowing the position of the input device 20 or other auxiliary information.

In one embodiment, when the touch device 10 sends the modulation signal, all the first electrode units can be driven by the same modulation signal. However, in another embodiment, in order to distinguish the modulation signals sent by the different first electrode units 12, the modulation signals sent by each of the first electrode units 12 have different modulation characteristics, and are Orthogonal modulation signals, the aforementioned different modulation characteristics are, for example, different spreading codes, but not limited to this. As shown in Figure 3, the spreading code of the modulation signal sent by the _{first electrode unit T x_i} in the i-th row _{is Code N} , and the modulation signal sent by the _{first electrode unit T x_i-1 in the i-1th row} The spreading code of is Code _N-1 , the spreading code of the modulation signal sent by the _{first electrode unit T x_i-2} of the i-2 row _{is Code N-2} , and the spreading code of the first electrode unit of the i+1 row The spreading code of the modulation signal sent by T _{x_i+1 is Code N+1} , and the spreading code of the modulation signal sent by the first electrode unit T _{x_i+2 in the i+2th row is Code N+2} . In one embodiment, the touch device 10 uses the modulation signals with different modulation characteristics to drive the first electrode units 12 in a specific number of rows, without driving all the aforementioned first electrode units 12. For example, the modulation signals with different modulation characteristics can be used to drive the odd-numbered or even-numbered first electrode units 12 on the touch device 10, or the modulation signals with different modulation characteristics The signal drives two or more first electrode units 12 at intervals, and the remaining first electrode units 12 can be inactive. In this case, the first electrode units 12 that send the aforementioned modulation signal can also cover Most areas of the touch operation area 11 are so that the input device 20 can receive the modulation signal as the aforementioned uplink signal when the input device 20 approaches or touches the touch device 10. In addition, the different modulation features may include on-off keying (OOK), Manchester coding (Manchester coding), Square and other modulation methods, but are not limited thereto.

The signal transmission method of the touch control system of the present invention has the following multiple implementation modes, but it is not limited thereto.

Please refer to FIG. 4 in conjunction with FIGS. 1A and 1B. The touch device 10 interactively executes the first mode and the second mode twice in a cycle, and the input device 20 receives the touch For example, the device 10 starts to send the downlink signal in the second mode after the modulated signal. In the first mode, the touch device 10 to the modulated signal S ₁ of the first electrode driving unit 12, the modulated signal S ₁ at the same time as the driving signal and an uplink signal S ₁₁ S _12, the second electrode unit 13 The sensing signal is received, and the transmitting and receiving electrode unit 210 of the input device 20 receives the modulation signal S ₁ ; in the second mode, the first electrode unit 12 and the second electrode unit 13 of the touch device 10 are used _{To receive the downlink signal S 2} sent by the sending and receiving electrode unit 210 of the input device 20. In the present embodiment, when the first half of the period P _1, the input device 20 is not in contact with or near the touch operation area 10 of the touch device 11, and to the end of the period P _1, only the input means 20 It is close to or in contact with the touch operation area 11 of the touch device 10, but at this time the transmitting and receiving electrode unit 210 of the input device 20 fails to receive the second modulation signal S ₁ completely in time, so until P _{At the} beginning of the second cycle, the transmitting and receiving electrode unit 210 of the input device 20 completely receives the modulation signal S ₁ sent by the first electrode unit 12 for the first time, and then the input device 20 is subsequently used every time the touch device 10 When entering the second mode, the downlink signal S ₂ is sent until the input device 20 is far away from the touch device 10 and cannot receive the modulation signal S ₁ .

Please refer to FIG. 5 in conjunction with FIGS. 2A and 2B. The touch device 10 interactively executes the first mode and the second mode twice in a cycle, and the input device 20A receives the touch The modulated signal of the device 10 corresponds to an example in which the downlink signal starts to be sent only when the touch device 10 is switched to the second mode. In the first mode, the touch device 10 to the modulated signal S ₁ of the first electrode driving unit 12, the modulated signal S ₁ at the same time as the driving signal and an uplink signal S ₁₁ S _12, the second electrode unit 13 The sensing signal is received, and the fourth electrode unit 212A of the input device 20A receives the modulation signal S ₁ ; in the second mode, the first electrode unit 12 and the second electrode unit 13 of the touch device 10 are used _{The downstream signal S 2} sent by the third electrode unit 211A of the input device 20A is received, and the fourth electrode unit 212A of the input device 20A can continue to receive the signal or switch off. In the present embodiment, when the first half of the period P _1, the input unit 20A is not in contact with the touch or near touch control device 10 of the operation area 11, and to the end of the period P _1, the input means 20A Is approaching or touching the touch operation area 11 of the touch device 10, but at this time, the fourth electrode unit 212A of the input device 20A fails to receive the second modulation signal S ₁ completely in time, so until P _{At the} beginning of the second cycle, the fourth electrode unit 212A of the input device 20A completely receives the modulation signal S _{1 sent by the first electrode unit 12 in the P 2} cycle, and then the third electrode unit of the input device 20A _{211A then sends the downlink signal S 2} every time the touch device 10 enters the second mode, until the input device 20A is far away from the touch device 10 and cannot receive the modulation signal S ₁ .

Please refer to FIG. 6 in conjunction with FIG. 1A and FIG. 1B. As an example, the input device 20 does not receive a modulation signal, but sends a beacon message at a fixed time interval as an example. In the first mode, the touch device 10 to the modulation signal S ₃ of the first electrode driving unit 12, the modulation signal S ₃ at the same time as the drive signal and the upstream signal S ₃₁ S _32, the second electrode unit 13 receiving the sensing signal, and transmits cum receiving electrode unit 20 of the input device 210 receives the modulated signal S _3; in the second mode, the touch device 10 of the first electrode and the second electrode unit 12 with a unit 13 _{To receive the beacon message S 4} from the transmitting and receiving electrode unit 210 of the input device 20. In the present embodiment, the apparatus 20 does not receive the input modulated signal S _3, the receiving cum transmitting electrode unit 20 of the input device 210 is fixed transmits the beacon message S ₄ at the beginning of each cycle, followed by receive messages; cum receiving electrode when the transmission unit period P _x of the input device 20 of the first electrode 210 receiving unit 12 transmits the modulated signal S _3, the input device 20 should be switched to the touch device 10 An execution time of the second mode interrupts the original P _x cycle ahead of time, and enters the next P _x+1 cycle, which means that the input device 20 interrupts the time that was originally supposed to receive messages and corresponds to the touch device 10 _{The beacon message S 4 is} sent at the start time of the second mode, but the input device 20 _{shortens the time for receiving the message in the P x} period, and the time allocation for sending and receiving messages in other subsequent periods remains unchanged. The input device 20 starts to send the lighthouse message S ₄ in advance to enable the input device 20 to synchronize with the touch device 10 in advance, thereby effectively improving the response between the input device 20 and the touch device 10 speed.

Please refer to FIG. 7 in conjunction with FIG. 2A and FIG. 2B. As an example, the input device 20A does not receive the modulation signal, but sends the lighthouse message at a fixed time interval as an example. In the first mode, the touch device 10 to the modulation signal S ₃ of the first electrode driving unit 12, the modulation signal S ₃ at the same time as the drive signal and the upstream signal S ₃₁ S _32, the second electrode unit 13 Receiving a sensing signal, and the fourth electrode unit 212A of the input device 20A receives the modulating signal S ₃ ; in the second mode, the first electrode unit 12 and the second electrode unit 13 of the touch device 10 are used _{The beacon message S 4} from the third electrode unit 211A of the input device 20A is received, and the fourth electrode unit 212A of the input device 20A can continuously receive the signal or be switched off. In this embodiment, when the input device 20A does not receive the modulation signal S ₃ , the third electrode unit 211A of the input device 20A sends the lighthouse message S _{4 at the} beginning of each cycle, and then the fourth electrode unit 212A to receive messages; P _x period when the input means 20A of the fourth electrode unit 212A receives the transmission 12 of the first electrode unit modulation signal S ₃ when the touch input apparatus 20A should The device 10 switches to the next execution time of the second mode, interrupts the original P _x cycle ahead of time, and enters the next P _x+1 cycle, which means that the input device 20 shortens the P _x cycle and starts sending the beacon message earlier S ₄ , except that the input device 20A shortens the P _x period, the other subsequent periods remain unchanged. The input device 20 starts to send the lighthouse message S ₄ in advance, so that the input device 20A can synchronize with the touch device 10 in advance, thereby effectively improving the response of the input device 20 relative to the touch device 10 speed.

Please refer to FIG. 8 in conjunction with FIG. 1A and FIG. 1B. Take the example that the input device 20 does not receive the modulation signal, but sends the lighthouse message at a fixed time interval and a fixed time length. In the first mode, the touch device 10 to the modulation signal S ₅ for driving the first electrode unit 12, the modulation signal S ₅ simultaneously as the drive signal and the uplink signal S ₅₁ S _52, the second electrode unit 13 receiving the sensing signal, and transmits cum receiving electrode unit 20 of the input device 210 receives the modulated signal S _5; in the second mode, the touch device 10 of the first electrode and the second electrode unit 12 with a unit 13 _{To receive the lighthouse messages S 60} and S ₆₁ from the transmitting and receiving electrode unit 210 of the input device 20. In the present embodiment, when the apparatus 20 does not receive the input modulated signal S _5, receiving cum transmitting electrode unit 20 of the input device 210 is fixed transmits the beacon message S ₆₀ at the beginning of each cycle, followed by receive messages; cum when transmitting reception period P _y electrode unit 20 of the input device 210 receives the transmitted tone 12 of the first electrode unit variation signal S _5, the input device 20 should be switched to the touch device 10 An execution time of the second mode interrupts the original P _y cycle ahead of time, and enters the next P _y+1 cycle, which means that the input device 20 interrupts the time that was supposed to receive the message and starts to send the lighthouse message S ₆₁ and increases the beacon transmission time or the number of times the message S _{61 is} in the P _{y +} cycle _1, but the input means 20 in addition to shortening the received messages in P _y cycle time, and increases the beacon message S is P _{y +} cycle _{1 Except} for the sending time or times of 61, the time allocation for sending and receiving messages in the rest of the subsequent periods remains unchanged. The input device 20 starts sending the beacon message S ₆₁ in advance and increases the time or number of sending the beacon message S ₆₁ to enable the input device 20 to synchronize with the touch device 10 early and obtain sufficient synchronization information.

Please refer to FIG. 9 in conjunction with FIG. 2A and FIG. 2B. Take the example that the input device 20A does not receive the modulation signal, but sends the lighthouse message at a fixed time interval and a fixed time length. In the first mode, the touch device 10 to the modulation signal S ₅ for driving the first electrode unit 12, the modulation signal S ₅ simultaneously as the drive signal and the uplink signal S ₅₁ S _52, the second electrode unit 13 receiving the sensing signal, and the fourth electrode unit 20A of the input device 212A receives the modulated signal S _5; in the second mode, the touch device 10 of the first electrode and the second electrode unit 12 to unit 13 _{The beacon message S 60} from the third electrode unit 211A of the input device 20A is received, and the fourth electrode unit 212A of the input device 20A can continuously receive the signal or be switched off. In the present embodiment, when the input device 20A does not receive the modulated signal S _5, the input device unit 211A of the third fixed electrode 20A transmits the beacon message S ₆₀ at the beginning of each cycle, followed by a the fourth electrode unit 212A to receive messages; P _y in the period when the input means 20A of the fourth electrode unit 212A receives the first electrode unit 12 transmits the modulated signal S _5, the input means 20A of the touch should The device 10 switches to the next execution time of the second mode, interrupts the original P _y cycle ahead of time, and enters the next P _y+1 cycle, which means that the input device 20 shortens the P _y cycle and starts sending the beacon message earlier S _61, but the input means 20A except shortened receive messages in P _y cycle time, and increases the beacon message S ₆₁ in P _{y +} cycle ₁ in the transmission time or the number of subsequent of the rest period to send and receive messages of The time allocation is unchanged. The input device 20 starts sending the beacon message S ₆₁ in advance and increases the _{time or number of times the beacon message S 61} is sent, so that the input device 20A can synchronize with the touch device 10 early and obtain sufficient synchronization information.

Please refer to FIG. 10 in conjunction with FIG. 1A and FIG. 1B. When the input device 20 does not receive the modulation signal, it sends a beacon message at a fixed time interval, and then sends an auxiliary message (recording such as the pressure information of the input device 20, battery Information and other information) as an example. In the first mode, the touch device 10 to the modulation signal S ₇ of the first electrode driving unit 12 transmits modulated signal S _7, S ₇ of the modulation signal as a drive signal S ₇₁ while and an uplink signal S _72, the second electrode unit 13 receives the sensing signal, and transmits cum receiving electrode unit 20 of the input device 210 receives the modulated signal S _7; in the second mode, the first electrode 10 of the touch device 12 and the unit The second electrode unit 13 is used to receive the lighthouse message S ₈ and the auxiliary message S ₉ from the sending and receiving electrode unit 210 of the input device 20. In the present embodiment, the apparatus 20 does not receive the input modulated signal _{S. 7,} the receiving cum transmitting electrode unit 20 of the input device 210 is fixed beacon transmission and auxiliary information _{message. 8} S S at the beginning of each cycle _9, and then subsequently receive messages; P _z period when the input means cum transmitting unit 20 of the receiving electrode 210 receives the transmission 12 of the first electrode unit modulation signal S _7, the input device 20 of the apparatus should touch 10 Switch to the next execution time of the second mode and interrupt the original P _z cycle ahead of time, and enter the next P _z+1 cycle, which means that the input device 20 interrupts the time that was originally supposed to receive messages and corresponds to the touch The device 10 starts to send the lighthouse message S ₄ at the start time of the second mode, but the input device 20 _{shortens the time of receiving the message in the P z} period, and the time allocation for sending and receiving messages in other subsequent periods remains unchanged . By starting to send the beacon message S ₈ in advance, the input device 20 can be synchronized with the touch device 10 in advance, thereby effectively improving the response speed of the input device 20 relative to the touch device 10.

Please refer to FIG. 11 in conjunction with FIG. 2A and FIG. 2B. The input device 20A does not receive the modulation signal, but sends a beacon message at a fixed time interval, and then sends an auxiliary message after receiving the touch device (recording as input The pressure information, battery information and other information of the device 20) are taken as an example. In the first mode, the touch device 10 to the modulation signal S ₇ of the first electrode driving unit 12, the modulation signal S ₇ simultaneously as a drive signal and an uplink signal S ₇₁ S _72, the second electrode unit 13 receiving the sensing signal, and the fourth electrode unit 20A of the input device 212A receives the modulated signal S _7; in the second mode, the touch device 12 and the first electrode unit 1310 of the second electrode unit for receiving _{The lighthouse message S 8} and the auxiliary message S ₉ from the third electrode unit 211A of the input device 20A, and the fourth electrode unit 212A of the input device 20A can continuously receive the signal or switch to off. In the present embodiment, the input device 20A does not receive the modulation signal _{S. 7,} the third electrode of the input means 20A of the fixing unit 211A transmits the beacon _{message. 8} S S and the auxiliary information at the beginning of each cycle _9, followed by the message 212A receives the fourth electrode unit; when the input means 20A of the fourth electrode unit period P _z in the received modulated signal ₇ transmitted S 12 of the first electrode unit 212A, the input means 20A corresponds to the execution time of the touch device 10 switching to the next second mode and interrupts the original P _z period ahead of time, and enters the next P _z+1 period, which means that the input device 20A shortens the P _z period and starts sending earlier The beacon message S ₈ and the auxiliary message S ₉ , but the input device 20A shortens the P _z period, and other subsequent periods remain unchanged. By starting to send the beacon message S ₈ in advance, the input device 20A can be synchronized with the touch device 10 in advance, thereby effectively improving the response speed of the input device 20 relative to the touch device 10.

Furthermore, in one embodiment, when the touch device 10 has not received the beacon message from the input device 20, the modulation signal sent by the touch device 10 in the first mode has a modulation Feature A; and when the touch device 10 has received a lighthouse message from the input device 20, the modulation signal sent by the touch device 10 in the first mode has a modulation feature B, the modulation feature A and the modulation feature B are different modulation features, so that the input device 20 that has been synchronized with the touch device 10 will not receive the modulation signal with the modulation feature A and synchronize again.

On the other hand, in order to improve the noise interference when the input device 20 is used in the touch device 10 (for example, when the input device 20 is held by hand, the palm of the user accidentally touches other parts of the touch operation area 11, resulting in The uplink signal sent by these parts affects the input device 20) via the palm part. In view of this, when the touch device 10 detects that the input device 20 is present, the touch device 10 may float or touch the touch operation area 11 adjacent to the input device 20 via the first electrode unit 12 The original modulation signal is sent in the area, but the auxiliary signal is sent in other areas to effectively eliminate noise interference. In different embodiments, the modulation signal and the auxiliary signal can be separated in different ways. The following are several embodiments, but not limited thereto.

Please refer to FIG. 12 in conjunction with FIG. 1A. When the input device 20 is hovering or touching the touch device 10, the touch device 10 determines what the input device 20 is hovering or touching according to the downstream signal of the input device 20 The position O, and the area adjacent to the position O defined on the touch operation surface 11 is a first area 111, and the remaining area is a second area 112. In the first mode, for the first area 111, the touch device 10 transmits the modulation signal through the first electrode unit 12 in the first area 111, and can transmit the modulation signal through all or part of the first area 111 A portion of the first electrode unit 12 sends the modulation signal. The modulation signals may all have the same modulation characteristics or have different modulation characteristics but are orthogonal to each other. For the second area 112, the touch device 10 transmits All or part of the first electrode unit 12 in the second area 112 The auxiliary signal is sent, wherein the auxiliary signal is a ground signal, and the ground signal refers to providing a fixed potential to the first electrode units 12 or grounding the first electrode units 12.

Please refer to FIG. 13 in conjunction with FIG. 1A. When the input device 20 is hovering or touching the touch device 10, the touch device 10 determines what the input device 20 is hovering or touching according to the downstream signal of the input device 20 The position P and the area adjacent to the position P defined on the touch operation surface 11 is the first area 111, and the remaining areas are the second area 112. In the first mode, for the first area 111, the touch device 10 transmits the modulation signal with a first spreading code or a first encoding method through the first electrode unit 12 in the first area 111 , And can send the modulation signal through all or part of the first electrode unit 12 in the first area 111, the modulation signal can all have the same modulation characteristics or have different modulation characteristics but are orthogonal to each other. The second area 112, all or part of the first electrode unit 12 in the second area 112 of the touch device 10 transmits an auxiliary signal with a second spreading code or a second encoding method.

Please refer to FIG. 14 in conjunction with FIG. 1A. When the input device 20 is hovering or touching the touch device 10, the touch device 10 determines what the input device 20 is hovering or touching according to the downstream signal of the input device 20 The position Q, and the area adjacent to the position Q defined on the touch operation surface 11 is the first area 111, and the remaining areas are the second area 112. In the first mode, for the first area 111, the touch device 10 transmits a modulation signal as a sine wave through the first electrode unit 12 in the first area 111, and can pass through the first area 111 All or part of the first electrode unit 12 transmits, the modulation signal may all have the same modulation characteristics or have different modulation characteristics but are orthogonal to each other. For the second area, the touch device 10 transmits through the first The auxiliary signal sent by the first electrode unit 12 in the second area 112 is a square wave. In another embodiment, before the touch device 10 receives the downlink signal from the input device 20, the touch device 10 transmits data having two different waveforms or different modulations through the first electrode unit 12 A characteristic hybrid modulation signal, such as a hybrid modulation signal having a sine wave and a square wave waveform, and after receiving the downstream signal, the touch device 10 is sent through the first electrode unit 12 in the first area 111 That The first electrode unit in the second area 112 transmits a modulation signal of another waveform (square wave) or modulation characteristic.

The above are only the embodiments of the present invention and do not limit the present invention in any form. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field, 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 is based on the technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (29)

A signal transmission method for a touch system, wherein the touch system includes a touch device and an input device. The touch device has a touch operation area, a plurality of first electrode units, and a plurality of second electrode units And a control unit, the method includes the following steps: the touch device executes a first mode and a second mode in time sharing, and in the first mode, the control unit of the touch device drives the The first electrode unit, and at the same time, the control unit also sends the modulation signal as an uplink signal to the input device through the first electrode unit, and in the second mode, the touch device transmits through the first electrode unit And the second electrode unit receives the downstream signal sent from the input device. The signal transmission method of the touch control system according to claim 1, wherein when the touch control device transmits the modulation signal in the first mode, the modulation signal is transmitted through at least two of the first electrode units , The modulation signal sent by one of the first electrode units has a first modulation feature, and the modulation signal sent by the other first electrode unit has a second modulation feature, wherein the first The modulation feature is different from the second modulation feature, and they are orthogonal signals to each other. The signal transmission method of the touch control system according to claim 2, wherein the aforementioned at least two first electrode units are adjacent to or spaced apart from each other by n rows of first electrode units, where n is greater than or equal to 1. The signal transmission method of the touch control system according to claim 1, wherein when the touch control device receives the downstream signal from the input device, the control unit of the touch control device will perform the touch control according to the position of the input device. The touch operation area of the device is divided into a first area and a second area. The first area is the area where the input device floats or touches the touch device, and the second area is the area other than the first area. In the subsequent first mode, the modulation signal is sent to the first electrode unit in the first area, and an auxiliary signal is sent to the first electrode unit in the second area, the modulation signal Different from the auxiliary signal. The signal transmission method of the touch control system according to claim 4, wherein the auxiliary signal is a fixed potential. The signal transmission method of the touch control system according to claim 4, wherein the modulation signal and the auxiliary signal have different waveforms, have different spreading codes, have different encoding methods, or have signals with different phases. The signal transmission method of the touch control system according to claim 1, wherein the input device sends a beacon message according to a preset time interval, and when the input device receives the modulation signal sent by the touch device, The input device ends the original work cycle and enters a synchronous work cycle, and sends the beacon message during the synchronous work cycle. The signal transmission method of the touch control system according to claim 7, wherein the time or number of times the input device sends the beacon message in the synchronization work cycle is greater than the time or number of times the beacon message is sent in the original work cycle. The signal transmission method of the touch control system according to claim 7, wherein when the touch control device does not receive a beacon message from the input device, the modulation sent by the touch control device in the first mode The signal has a third modulation feature; after the touch device receives the beacon message from the input device, the modulation signal sent by the touch device in the subsequent first mode has a fourth modulation feature , The third modulation feature is different from the fourth modulation feature. The signal transmission method of the touch control system according to claim 9, wherein the third modulation characteristic of the modulation signal is different from the fourth modulation characteristic means that the modulation characteristics of the two have different spreads. Frequency codes or encoded in different ways. A touch control system includes a touch control device including a touch operation area, a plurality of first electrode units, a plurality of second electrode units, and a control unit, the first electrode unit and the second electrode unit Are arranged under the touch operation area in different directions, and are electrically connected with the control unit; and An input device includes a controller and an electrode group, the electrode group is electrically connected to the controller; wherein the touch device has a first mode and a second mode, and in the first mode, the touch The control unit of the control device drives the first electrode unit with a modulation signal, and at the same time, the control unit also sends the modulation signal as an uplink signal to the input device through the first electrode unit, in the second mode The touch control device receives, through the first electrode unit and the second electrode unit, the downstream signal sent from the input device through the electrode group. The touch system according to claim 11, wherein the electrode group is a transmitting and receiving electrode unit, and the transmitting and receiving electrode unit respectively performs the transmission of the downlink signal and the reception of the modulation signal in a time-sharing manner. The touch system according to claim 11, wherein the electrode group of the input device includes a third electrode unit and a fourth electrode unit, wherein the input device is used to send the downstream signal through the third electrode unit, the The input device is used for receiving the modulation signal through the fourth electrode unit. The touch system according to claim 11, wherein when the touch device sends the modulation signal in the first mode, the modulation signal is sent through at least two of the first electrode units, and the The modulation signal sent by one of the first electrode units has a first modulation characteristic, and the modulation signal sent by the other first electrode unit has a second modulation characteristic, wherein the first modulation characteristic is different In the second modulation feature, they are orthogonal signals to each other. A signal transmission method for a touch device, wherein the touch device includes a touch operation area, a plurality of first electrode units, a plurality of second electrode units, and a control unit. The touch device executes a first mode and a control unit. The second mode; in the first mode, the control unit of the touch device drives the first electrode unit with a modulation signal, and sends the modulation signal as an uplink signal through the first electrode unit In the second mode, the touch device simultaneously performs capacitive sensing through the first electrode unit and the second electrode unit. The signal transmission method of a touch device according to claim 15, wherein when the touch device sends the modulation signal in the first mode, the modulation signal is sent through at least two of the first electrode units , The modulation signal sent by one of the first electrode units has a first modulation feature, and the modulation signal sent by the other first electrode unit has a second modulation feature, wherein the first The modulation feature is different from the second modulation feature, and they are orthogonal signals to each other. The signal transmission method of a touch device according to claim 16, wherein the aforementioned at least two first electrode units are adjacent to or spaced apart from each other by n rows of first electrode units, where n is greater than or equal to 1. The signal transmission method of a touch device according to claim 15, wherein when the touch device receives a downstream signal from an input device, the control unit of the touch device will touch the touch device according to the position of the input device. The control operation area is divided into a first area and a second area. The first area is the area where the input device floats or touches the touch device, and the second area is the area other than the first area. In the first mode, the first electrode unit in the first area transmits the modulation signal, and the first electrode unit in the second area transmits an auxiliary signal, and the modulation signal is different from the auxiliary signal . The signal transmission method of the touch device according to claim 18, wherein the auxiliary signal is a fixed potential. The signal transmission method of a touch device according to claim 18, wherein the modulation signal and the auxiliary signal have different waveforms, have different spreading codes, have different encoding methods, or have signals with different phases . A touch device includes a plurality of first electrode units, a plurality of second electrode units, and a control unit. The first electrode unit and the second electrode unit are arranged under the touch operation area along different directions, and Respectively form an electrical connection with the control unit; The touch device has a first mode and a second mode; in the first mode, the control unit of the touch device drives the first electrode unit with a modulated signal and passes through the first electrode The unit sends the modulated signal as an uplink signal; in the second mode, the touch device simultaneously performs capacitive sensing through the first electrode unit and the second electrode unit. The touch device according to claim 21, wherein when the touch device transmits the modulation signal in the first mode, the modulation signal is transmitted through at least two of the first electrode units, and by the The modulation signal sent by one of the first electrode units has a first modulation characteristic, and the modulation signal sent by the other first electrode unit has a second modulation characteristic, wherein the first modulation characteristic is different In the second modulation feature, they are orthogonal signals to each other. A signal transmission method for an input device, wherein the input device includes a controller and an electrode group, the method includes the following steps: the input device sends a beacon message at a preset time interval, when the input device passes through the electrode group When receiving an uplink signal from a touch device, the controller of the input device ends the original work cycle and enters a synchronous work cycle, and sends the beacon message through the electrode group during the synchronous work cycle. The signal transmission method of the input device according to claim 23, wherein the time for the input device to send the beacon message in the synchronization duty cycle is longer than the time to send the beacon message in the original duty cycle. The signal transmission method of the input device according to claim 23 or 24, wherein the input device only sends the beacon message during the synchronization duty cycle. The signal transmission method of the input device according to claim 23 or 24, wherein the input device sends an accompanying information after sending the beacon message in the synchronization work cycle. An input device includes a controller and an electrode group, the electrode group is electrically connected to the controller; wherein the input device sends a beacon message at a preset time interval, when When the input device receives a modulation signal from a touch device through the electrode group, the controller of the input device ends the original work cycle and enters a synchronous work cycle, and sends the beacon message through the electrode group. The input device according to claim 27, wherein the electrode group is a transmitting and receiving electrode unit, and the electrode group respectively performs the transmission of the downlink signal and the reception of the modulation signal in a time-sharing manner. The input device according to claim 27, wherein the electrode group includes a third electrode unit and a fourth electrode unit, wherein the input device is used to send the downstream signal by the third electrode unit, and the input device is used by the The fourth electrode unit is used for receiving the modulation signal.

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