CN111142695B - touch system - Google Patents

Abstract

A touch control system includes: a touch panel; an active pen for generating a signal; and a touch controller electrically connected to the touch panel for detecting the signal. When the touch controller supports at least two protocols, one of the protocols of the touch controller is automatically switched to one of the at least two protocols, and the active pen automatically detects the one of the touch controller protocol, one of the protocols of the active pen is switched to the one of the protocols of the touch controller.

Description

touch system

technical field

The disclosure relates to the field of touch technology, in particular to a touch system.

Background technique

The protocol of the active pen (active pen) and the protocol of the touch controller of the touch panel (Touch Panel, TP) must be consistent to be compatible. However, due to various factors, such as new products, price or performance, etc., existing active pens and touch controllers have many different protocols, and active pens and touch controllers with different protocols are not compatible, making active The application of the pen is limited.

In addition, manufacturers will produce active pens with different protocols according to requirements, which is inconvenient for manufacturers to maintain active pens with different protocols.

Although there are currently active pens and touch controllers that support multiple different protocols, the touch controller cannot determine which protocol to use for better performance. When the active pen and the touch controller can communicate through multiple protocols, the active pen needs to use the button to switch the protocol, and the touch controller needs to use the software or the button to switch the protocol. The protocol of the active pen and the protocol of the touch controller are incompatible due to the possibility of switching errors or accidental key presses. In short, the touch controller may only communicate with the protocol that was successfully connected for the first time, and the touch controller cannot choose the protocol with the best performance from a variety of available protocols to communicate.

Therefore, it is necessary to propose a solution to the above-mentioned problems in the prior art.

Contents of the invention

The disclosure provides a touch control system, which can solve the problems in the prior art.

The touch control system disclosed in the present disclosure includes: a touch panel; an active stylus for generating a signal; and a touch controller electrically connected to the touch panel for detecting the signal. When the touch controller supports at least two protocols, one of the protocols of the touch controller is automatically switched to one of the at least two protocols, and the active pen automatically detects the one of the touch controller protocol, one of the protocols of the active pen is switched to the one of the protocols of the touch controller.

The touch control system disclosed in the present disclosure includes: a touch panel; an active stylus for generating a signal; and a touch controller electrically connected to the touch panel for detecting the signal. When the touch controller supports at least two protocols, one of the protocols of the touch controller automatically switches to one of the at least two protocols to connect with the active pen.

In the touch system of the present disclosure, the active pen and the touch controller can automatically detect the protocol of the other and switch to the protocol of the other. In addition, when the touch controller supports at least two bidirectional protocols, the touch controller can automatically switch to one of the at least two bidirectional protocols.

In order to make the above content of this disclosure more obvious and understandable, the preferred embodiments are specifically cited below, together with the attached drawings, and are described in detail as follows:

Description of drawings

FIG. 1 shows a schematic diagram of a touch system according to an embodiment of the disclosure.

FIG. 2 shows a schematic diagram of a touch panel and a touch controller.

FIG. 3 shows a schematic diagram of a coupling capacitor formed between a driving electrode and a sensing electrode of the touch panel.

FIG. 4 shows a timing diagram of a one-way protocol for the active pen detection touch controller.

FIG. 5 shows a timing diagram of a two-way protocol for the active pen detection touch controller.

FIG. 6 shows a timing diagram of the touch controller detecting that the protocol of the active pen is a one-way protocol.

FIG. 7 shows a timing diagram of the touch controller detecting that the protocol of the active pen is a bidirectional protocol.

Detailed ways

In order to make the purpose, technical solutions and effects of the present disclosure more clear and definite, the present disclosure will be further described in detail below with reference to the drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present disclosure, and the word "embodiment" used in the present disclosure specification is meant to be used as an example, illustration or illustration, and is not intended to limit the present disclosure. Furthermore, the article "a" as used in this disclosure and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from the context in the singular. Moreover, in the accompanying drawings, components with similar or identical structures and functions are denoted by the same component numbers.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 shows a schematic diagram of a touch control system according to an embodiment of the present disclosure. FIG. 2 shows a schematic diagram of a touch panel 10 and a touch controller 20 .

The touch system includes the touch panel 10 , the touch controller 20 and an active stylus 30 .

The active pen 30 is used to generate a signal. The touch controller 20 is electrically connected to the touch panel 10 and used for detecting the signal. The signal is, for example, generated by the active pen 30 touching the touch panel 10 , that is, the signal is a touch signal. Alternatively, the signal is generated by the active pen 30 floating on the touch panel 10 , that is, the signal is a floating signal.

Please refer to FIG. 1 to FIG. 3 . FIG. 3 shows a schematic diagram of a coupling capacitor Cm formed between a driving electrode 12 and a sensing electrode 14 of the touch panel 10 .

As shown in FIG. 2 , the touch panel 10 generally includes a plurality of electrodes arranged in a matrix and wires connecting the plurality of electrodes. The plurality of electrodes are made of indium tin oxide (Indium Tin Oxide, ITO). The shape of the plurality of electrodes is usually bar or diamond. In a mutual capacitance (Mutual Capacitance) architecture, the plurality of electrodes include a plurality of driving electrodes 12 (as shown in FIG. 3 ) and a plurality of sensing electrodes 14 (as shown in FIG. 3 ), and correspondingly, the wires also include a plurality of A driving wire 16 and a plurality of sensing wires 18 , the plurality of driving wires 16 are individually connected to the plurality of driving electrodes 12 , and the plurality of sensing wires 18 are individually connected to the plurality of sensing electrodes 14 . The driving method of the mutual capacitance structure is to sequentially apply a panel driving signal TP_TX (TP stands for TouchPanel, that is, a touch panel) to the plurality of driving electrodes 12 through the plurality of driving wires 16. The panel driving signal TP_TX is usually Correspondingly, a pulse signal reads the sensing signal TP_RX from the sensing electrodes 14 sequentially through the sensing wires 18 .

As shown in FIG. 1, the active stylus 30 (also known as an active stylus or a capacitive stylus) can produce an effect similar to touching the touch panel 10 in FIG. The capacitance value of the coupling capacitance Cm between the electrodes 14 is measured. Alternatively, the suspension signal of the active pen 30 can change the capacitance value of the coupling capacitor Cm between the driving electrode 12 and the sensing electrode 14 in FIG. 3 .

The active pen 30 includes a casing 32 , a sending part 34 , a receiving part 36 , a pressure sensing component 38 and a control unit 40 .

The casing 32 has a hollow structure. The transmitting portion 34 is disposed at an outward extension of one end of the casing 32 . The receiving portion 36 is disposed inside the end of the housing 32 . The pressure sensing component 38 extends outward from the transmitting portion 34 . The control unit 40 is disposed inside the housing 32 and is electrically connected to the sending part 34 , the receiving part 36 and the pressure sensing component 38 .

It should be noted that the positions of the sending unit 34 and the receiving unit 36 are not limited to those shown in FIG. 1 , and the sending unit 34 and the receiving unit 36 can be set at appropriate positions according to requirements.

Please refer to FIG. 1 to FIG. 5 . FIG. 4 shows a timing diagram of the active pen 30 detecting that the protocol of the touch controller 20 is a one-way protocol. FIG. 5 shows a timing diagram of the active pen 30 detecting that the protocol of the touch controller 20 is a bidirectional protocol.

A feature of the present disclosure is that the active pen 30 can automatically detect the protocol of the touch controller 20 and switch the protocol of the active pen 30 to the protocol of the touch controller 20 . More specifically, the active pen 30 can automatically detect whether the protocol of the touch controller 20 is a one-way protocol (FIG. 4) or a two-way protocol (FIG. 5). When the protocol of the touch controller 20 is a one-way protocol, it means that the touch controller 20 only receives the active pen signal sent by the sending part 34 of the active pen 30 and does not send the controller signal. When the protocol of the touch controller 20 is a two-way protocol, it means that the touch controller 20 sends a controller signal with a two-way protocol and receives the active pen signal sent by the sending part 34 of the active pen 30 .

In FIG. 4 , the protocol of the touch controller 20 is a one-way protocol, so no controller signal is sent. When the receiving part 36 of the active pen 30 does not receive the controller signal, the transmitting part 34 of the active pen 30 sends an active pen signal with a one-way protocol to the touch point via the plurality of sensing electrodes 14 during the period T1. The controller 20, and then the receiving part 36 of the active pen 30 detects whether the touch controller 20 sends a controller signal during the period T2. Since the protocol of the touch controller 20 is a one-way protocol, it means that the touch controller 20 will not send a controller signal, so the receiving part 36 of the active pen 30 does not receive the controller signal, and the control of the active pen 30 The device 40 judges that the protocol of the touch controller 20 is a one-way protocol.

In FIG. 5 , the protocol of the touch controller 20 is a bidirectional protocol, so the touch controller 20 will send controller signals with a bidirectional protocol. It should be noted that when the protocol of the touch controller 20 is a two-way protocol, the touch controller 20 will first send a signal (that is, a controller signal).

When the receiving part 36 of the active pen 30 receives the controller signal with the bidirectional protocol sent by the touch controller 20 through the plurality of drive electrodes 12 during the period T3, the controller 40 of the active pen 30 judges that the touch The protocol of the touch controller 20 is a two-way protocol. The active pen 30 will automatically switch to the bidirectional protocol during the period T4.

As can be seen from FIG. 4 , the active pen 30 can constantly send an active pen signal of a specific one-way protocol, so the active pen 30 can detect (support) a touch controller of a one-way protocol. It can be seen from FIG. 5 that the active pen 30 can send active pen signals of different bidirectional protocols, so the active pen 30 can support touch controllers of various bidirectional protocols. In short, the active pen 30 can support a touch controller with one-way protocol and touch controllers with multiple two-way protocols.

In addition, another feature of the present disclosure is that when the touch controller 20 supports at least two protocols (a unidirectional protocol and at least two of multiple bidirectional protocols), the touch controller 20 automatically switches to the at least two One of two protocols. After the touch controller 20 automatically switches to one of the at least two protocols, the active pen 30 automatically detects the protocol of the touch controller 20 adaptively and switches the protocol of the active pen 30 to One of the protocols of the touch controller 20 .

More specifically, the touch controller 20 automatically switches to one of the at least two protocols in response to a specific rule. The specific rule includes but not limited to at least one of the report rate, the pressure level of the pressure sensing component 38 of the active pen 30 , the tilt angle and the power saving level. For example, the touch controller 20 automatically switches to a protocol with a higher reporting rate. Alternatively, the touch controller 20 automatically switches to a protocol with higher pressure sensitivity. Alternatively, the touch controller 20 automatically switches to a protocol that supports tilt angles. Alternatively, the touch controller 20 automatically switches to a protocol with a higher degree of power saving.

Please refer to FIG. 1 to FIG. 3 and FIG. 6 to FIG. 7 . FIG. 6 shows a timing diagram of the touch controller 20 detecting that the protocol of the active pen 30 is a one-way protocol. FIG. 7 shows a timing diagram of the touch controller 20 detecting that the protocol of the active pen 30 is a bidirectional protocol.

A feature of the present disclosure is that the touch controller 20 can automatically detect whether the protocol of the active pen 30 is a one-way protocol ( FIG. 6 ) or a two-way protocol ( FIG. 7 ). More specifically, when the protocol of the active pen 30 is a one-way protocol, it means that the active pen 30 only sends the active pen signal and does not receive the controller signal with the two-way protocol sent by the touch controller 20 . When the protocol of the active pen 30 is a two-way protocol, it means that the active pen 30 sends the active pen signal and receives the controller signal with the two-way protocol sent by the active pen 30 .

In FIG. 6 , the protocol of the active pen 30 is a one-way protocol, so it will not receive the controller signal with the two-way protocol sent by the touch controller 20 . The touch controller 20 sends a controller signal with a bidirectional protocol (eg, bidirectional protocol N0 ) during the period T5 , and as mentioned above, the active pen 30 will not receive the controller signal.

The touch controller 20 detects whether the sending part 34 of the active pen 30 sends an active pen signal with a one-way protocol or a two-way protocol during the period T6. Since the sending part 34 of the active pen 30 did not send an active pen signal with a one-way protocol or a two-way protocol during T6, the touch controller 20 did not detect that the sending part 34 of the active pen 30 sent a signal during T6. Active pen signaling with one-way protocol or two-way protocol.

The touch controller 20 sends a controller signal with a bidirectional protocol (eg, bidirectional protocol N1 ) during the period T7 , and as mentioned above, the active pen 30 does not receive the controller signal.

The touch controller 20 detects whether the sending part 34 of the active pen 30 sends an active pen signal with a one-way protocol or a two-way protocol during the period T8. Since the sending part 34 of the active pen 30 sends the active pen signal with the one-way protocol during the period T8, the touch controller 20 detects that the sending part 34 of the active pen 30 sends the active pen signal with the one-way protocol during the period T8 signal, and the touch controller 20 automatically switches to the one-way protocol during the period T8.

In FIG. 7, the protocol of the active pen 30 is a two-way protocol, so the sending part 34 of the active pen 30 will send an active pen signal with a two-way protocol and the receiving part 36 of the active pen 30 will receive the signal sent by the active pen 30. The controller signal with two-way protocol.

The touch controller 20 sends a controller signal with a bidirectional protocol (eg bidirectional protocol N0 ) during the period T9 , and as mentioned above, the receiving part 36 of the active pen 30 receives the controller signal.

The touch controller 20 detects whether the sending part 34 of the active pen 30 sends an active pen signal with a one-way protocol or a two-way protocol during the period T10 . Since the two-way protocol N0 is not a two-way protocol compatible with the active pen 30, the sending part 34 of the active pen 30 will not send the active pen signal, and the touch controller 20 does not detect the transmission of the active pen 30 during T10. Section 34 transmits an active pen signal with a one-way protocol or a two-way protocol.

The touch controller 20 sends a controller signal with a bidirectional protocol (eg bidirectional protocol N1 ) during the period T11 , and as mentioned above, the receiving part 36 of the active pen 30 receives the controller signal.

The touch controller 20 detects whether the sending part 34 of the active pen 30 sends an active pen signal with a one-way protocol or a two-way protocol during the period T12. Since the bidirectional protocol N1 is not a bidirectional protocol compatible with the active pen 30, the sending part 34 of the active pen 30 will not send the active pen signal, and the touch controller 20 does not detect the transmission of the active pen 30 during the period T12. Section 34 transmits an active pen signal with a one-way protocol or a two-way protocol.

The touch controller 20 sends a controller signal with a bidirectional protocol (eg bidirectional protocol N2 ) during the period T13 , and as mentioned above, the receiving part 36 of the active pen 30 receives the controller signal.

The touch controller 20 detects whether the sending part 34 of the active pen 30 sends an active pen signal with a one-way protocol or a two-way protocol during the period T14. Since the bidirectional protocol N2 is a bidirectional protocol compatible with the active pen 30, the sending part 34 of the active pen 30 will send an active pen signal with the bidirectional protocol N2, and the touch controller 20 detects the active pen 30 during the period T14. The sending part 34 sends the active pen signal with two-way protocol.

It can be seen from FIG. 6 that the touch controller 20 can detect active pen signals of various one-way protocols, so the touch controller 20 can support active pens of various one-way protocols. It can be seen from FIG. 7 that the touch controller 20 can send active pen signals of different bidirectional protocols, so the touch controller 20 can support active pens of various bidirectional protocols. In short, the touch controller 20 can support touch controllers of various unidirectional protocols and touch controllers of various bidirectional protocols.

In addition, another feature of the present disclosure is that when the touch controller 20 supports at least two protocols, the touch controller 20 automatically switches to one of the at least two protocols to connect with the active pen 30 .

More specifically, the touch controller 20 automatically switches to one of the at least two protocols (at least two of the one-way protocols and the two-way protocols) in response to a specific rule. The specific rule includes but not limited to at least one of the report rate, the pressure sensitivity of the pressure sensing component 38 of the active pen 30 , the tilt angle and the power saving degree. For example, the touch controller 20 automatically switches to a protocol with a higher reporting rate. Alternatively, the touch controller 20 automatically switches to a protocol with higher pressure sensitivity. Alternatively, the touch controller 20 automatically switches to a protocol that supports tilt angles. Alternatively, the touch controller 20 automatically switches to a protocol with a higher degree of power saving.

In the touch system of the present disclosure, the active pen and the touch controller can automatically detect the protocol of the other and switch to the protocol of the other. In addition, when the touch controller supports at least two bidirectional protocols, the touch controller can automatically switch to one of the at least two bidirectional protocols.

In summary, although the present disclosure has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present disclosure, and those skilled in the art can make various modifications without departing from the spirit and scope of the present disclosure. Changes and retouches, so the protection scope of the present disclosure shall be subject to the scope defined by the claims.

Claims (10)

1. A touch system, comprising:

a touch panel;

an active pen for generating a signal; and

a touch controller electrically connected to the touch panel for detecting the signal,

wherein when the touch controller supports at least two protocols, and the touch controller responds to a specific rule, one protocol of the touch controller is automatically switched to one of the at least two protocols, the active pen automatically detects the one protocol of the touch controller, and one protocol of the active pen is switched to the one protocol of the touch controller, wherein the specific rule comprises at least one of a point reporting rate, a pressure sensing degree, a tilt angle and a power saving degree of the active pen.

2. The touch system of claim 1, wherein the touch controller automatically detects whether the touch controller has a unidirectional protocol or a bidirectional protocol, and when the touch controller has the unidirectional protocol, the touch controller only receives the active pen signal transmitted by the active pen and does not transmit the controller signal, and when the touch controller has the bidirectional protocol, the touch controller transmits the controller signal having the bidirectional protocol and receives the active pen signal transmitted by the active pen.

3. The touch system of claim 2, wherein the active pen transmits an active pen signal of a particular one of the unidirectional protocols and transmits an active pen signal of a different bidirectional protocol.

4. The touch system of claim 3, wherein the active pen sends an active pen signal with a unidirectional protocol to the touch controller, the active pen does not receive the controller signal, and the active pen determines that the protocol of the touch controller is the unidirectional protocol.

5. The touch system of claim 3, wherein the active pen determines that the protocol of the touch controller is bi-directional after the active pen receives the controller signal with bi-directional protocol sent by the touch controller.

6. A touch system, comprising:

a touch panel;

an active pen for generating a signal; and

a touch controller electrically connected to the touch panel for detecting the signal,

when the touch controller supports at least two protocols, and the touch controller responds to a specific rule, one protocol of the touch controller is automatically switched to one of the at least two protocols to be connected with the active pen, wherein the specific rule comprises at least one of a point reporting rate, a pressure sensing degree, an inclined angle and a power saving degree of the active pen.

7. The touch system of claim 6, wherein the touch controller automatically detects that the protocol of the active pen is a unidirectional protocol or a bidirectional protocol, and when the protocol of the active pen is a unidirectional protocol, the active pen only transmits the active pen signal without receiving the controller signal with the bidirectional protocol transmitted by the touch controller, and when the protocol of the active pen is a bidirectional protocol, the active pen transmits the active pen signal and receives the controller signal with the bidirectional protocol transmitted by the active pen.

8. The touch system of claim 7, wherein the touch controller transmits active pen signals of different bi-directional protocols.

9. The touch system of claim 8, wherein the touch controller sends an active pen signal with a unidirectional protocol to the touch controller, and the touch controller determines that the active pen has a unidirectional protocol.

10. The touch system of claim 8, wherein the active pen sends an active pen signal with a bi-directional protocol after the active pen receives a controller signal with a bi-directional protocol sent by the touch controller, and the touch controller determines that the protocol of the active pen is a bi-directional protocol.

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