Signal processing method and related circuit
By designing a touch control system containing backup processing circuits in the electronic circuit, the circuit failure problem caused by the failure of some key components is solved, and the effect of still being able to operate normally in the event of a failure is achieved.
Patent Information
- Application Number
- CN202410817161.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-10-02
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-04
AI Technical Summary
The existing electronic circuit cannot operate normally when some key components fail, resulting in the failure of the entire circuit.
A circuit including N touch signal processing circuits, a backup processing circuit and a controller is designed. The controller determines whether the touch signal processing circuit is faulty, and switches the use of the backup processing circuit according to the judgment results to ensure the normal operation of the system.
When the touch signal processing circuit fails, the backup processing circuit can effectively replace the faulty circuit to ensure that the entire touch system can still operate normally in some fault conditions.
Smart Images
Figure CN119759221A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a signal processing method and a related circuit, in particular to a signal processing method and a related circuit with a backup processing circuit. Background Art
[0002] Electronic circuits may be affected by various factors, such as electrostatic discharge, semiconductor process yield, etc. These factors may not cause the entire circuit to fail, but may cause the failure of key components, making the entire circuit unable to operate normally. Therefore, the industry is working hard to find ways to restore the function of the entire electronic circuit when only some key components fail. Summary of the invention
[0003] One of the main objectives of the present invention is to provide a touch signal processing method and related circuits to solve the above-mentioned problem.
[0004] The present invention provides a circuit for a touch panel, comprising N touch signal processing circuits; a standby processing circuit; and a controller coupled to the N touch signal processing circuits and the standby processing circuit, for determining whether one of the N touch signal processing circuits is faulty and generating a determination result, and for controlling the N touch signal processing circuits and the standby processing circuit to process N touch signals received by the touch panel according to the determination result to obtain N digital signals.
[0005] The present invention provides a touch signal processing method for a circuit of a touch panel, comprising determining whether one of N touch signal processing circuits is faulty and generating a determination result; controlling the N touch signal processing circuits and a standby processing circuit of the circuit to process N touch signals received by the touch panel according to the determination result to obtain N digital signals. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 A simplified schematic diagram of a conventional touch control system.
[0007] Figure 2 FIG. 1 is a schematic diagram of a touch control system according to an embodiment of the present invention.
[0008] Figure 3 and Figure 4 FIG. 1 is a schematic diagram of a touch control system according to an embodiment of the present invention.
[0009] Figure 5 FIG. 4 is a schematic diagram of a touch control system according to another embodiment of the present invention.
[0010] Figure 6 The figure is a flow chart of a touch signal processing method according to an embodiment of the present invention.
[0011] The reference numerals are described as follows:
[0012] 1, 2, 3, 4: Touch system,
[0013] 6: Process
[0014] 10, TS, TS1~TSN, TSGroup1~TSGroupN: touch signal processing circuit
[0015] 102: Analog-to-digital converter
[0016] 104: Digital Filter
[0017] 20: Touch multiplexer
[0018] 30: Touch panel
[0019] 40: Controller
[0020] SW, SW1~SWN: Switching circuit
[0021] BU, BUGroup: backup processing circuit
[0022] S600, S602, S604, S606: Steps DETAILED DESCRIPTION
[0023] Certain words are used in the specification and subsequent claims to refer to specific components. It should be understood by those with ordinary knowledge in the field that hardware manufacturers may use different terms to refer to the same component. This specification and subsequent claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. The word "including" mentioned throughout the specification and subsequent claims is an open-ended term and should be interpreted as "including but not limited to". In addition, the word "coupled" here includes any direct and indirect electrical connection means. Therefore, if the text describes a first device coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.
[0024] Please refer to Figure 1 , Figure 1It is a simplified schematic diagram of a conventional touch control system 1. The touch control system 1 includes a plurality of touch signal processing circuits 10, a plurality of touch multiplexers 20 and a touch panel 30. The touch panel 30 is used to receive analog touch signals such as touches and gestures of a user on a touch interface of the touch panel 30. The plurality of touch signal processing circuits 10 are coupled to the touch panel 30 through the plurality of touch multiplexers 20 to receive and process analog touch signals. Specifically, each touch signal processing circuit 10 includes an analog to digital converter (ADC) 102 and a digital filter 104. The analog touch signal is input to the analog to digital converter 102 of the plurality of touch signal processing circuits 10 and converted into a digital touch signal. Finally, the digital filter 104 of the plurality of touch signal processing circuits 10 filters out noise in the digital touch signal for subsequent operations.
[0025] It should be noted that the conventional touch control system 1 may not work properly as long as one of the multiple touch signal processing circuits 10 fails or short-circuits, for example, when one of the analog-to-digital converter 102 and the digital filter 104 fails, or when the connection between the analog-to-digital converter 102 and the digital filter 104 or various components such as the touch multiplexer is short-circuited. In order to improve the shortcomings of the conventional touch control system 1, the present invention adds a backup processing circuit that is the same as or matches any one of the multiple touch signal processing circuits 10.
[0026] For details, please refer to Figure 2 , Figure 2 FIG. 2 is a schematic diagram of a touch control system 2 according to an embodiment of the present invention. The touch control system 2 is derived from the conventional touch control system 1, so the same elements are represented by the same symbols. Figure 2 A touch signal processing circuit TS of the touch control system 2 is shown as a representative circuit of multiple touch signal processing circuits for processing analog touch signals from the touch panel 30. In addition, the touch control system 2 also includes a backup processing circuit BU and a controller 40 that are the same as the touch signal processing circuit TS. The controller 40 can determine whether the touch signal processing circuit TS is faulty and generate a judgment result, and the controller 40 can control the touch signal processing circuit TS and the backup processing circuit BU to process the analog touch signal according to the judgment result. In one embodiment, when the judgment result indicates that the touch signal processing circuit TS is not faulty, the controller 40 disables the backup processing circuit BU and controls the touch signal processing circuit TS to process the analog touch signal to obtain a digital signal. In another embodiment, when the judgment result indicates that the touch signal processing circuit TS is faulty, the controller 40 disables the touch signal processing circuit TS and controls the backup processing circuit BU to process the analog touch signal to obtain a digital signal.
[0027] In short, in the touch control system 2, when the touch signal processing circuit TS fails, the backup processing circuit BU can replace the touch signal processing circuit TS to process the analog touch signal. In order to achieve the above replacement operation, the touch control system 2 can also include a switching circuit SW to switch the touch signal processing circuit TS and the backup processing circuit BU. It should be noted that the touch multiplexer can add a switching function, such as Figure 2 The switching circuit SW is shown in FIG.
[0028] In a detailed embodiment, please refer to Figure 3 and Figure 4 , Figure 3 and Figure 4 FIG. 4 is a schematic diagram of a touch control system 3 according to an embodiment of the present invention. The touch control system 3 includes N touch signal processing circuits TS1 to TSN, a backup processing circuit BU, N switching circuits SW1 to SWN, a controller 40, and a touch panel 30. The controller 40 can determine whether one of the N touch signal processing circuits TS1 to TSN is faulty and generate a determination result. Figure 3 As shown, when the judgment result indicates that the N touch signal processing circuits TS1-TSN have no faults, the controller 40 disables the backup processing circuit BU and controls the N touch signal processing circuits TS1-TSN to receive N analog touch signals through the N switching circuits SW1-SWN respectively, and processes the N analog touch signals to obtain N digital signals. On the other hand, Figure 4 As shown, when the judgment result indicates that an Mth touch signal processing circuit TSM among N touch signal processing circuits is faulty, the controller 40 disables the Mth touch signal processing circuit TSM and enables the backup processing circuit BU, and controls the backup processing circuit Bu and the N touch signal processing circuits TS1~TSN except the Mth touch signal processing circuit TSM to receive N analog touch signals through N switching circuits SW1~SWN respectively, and then processes the N analog touch signals to obtain N digital signals.
[0029] Specifically, the controller 40 controls an Mth switching circuit SWM among the N switching circuits SW1 to SWN to switch to connect to an Mth touch signal processing circuit TSM among the N touch signal processing circuits TS1 to TSN or an (M+1)th touch signal processing circuit TS(M+1), and controls an Nth switching circuit SWN among the N switching circuits to switch to connect to an Nth touch signal processing circuit TSN among the N touch signal processing circuits TS1 to TSN or a backup processing circuit BU, where M is less than N. Figure 3As shown, when the judgment result indicates that the N touch signal processing circuits TS1-TSN have no faults, the controller 40 controls the Mth switching circuit SWM to connect to the Mth touch signal processing circuit TSM, and controls the Nth switching circuit SWN to connect to the Nth touch signal processing circuit TSN, and the controller 40 controls the N touch signal processing circuits TS1-TSN to receive N analog touch signals from the touch panel 30 through the N switching circuits SW1-SWN, and processes the N analog touch signals to obtain N digital signals. On the other hand, as Figure 4 As shown, when the judgment result indicates that an i-th touch signal processing circuit TSi among the N touch signal processing circuits fails, if M is less than N and greater than or equal to i, the controller 40 controls the M-th switching circuit SWM to connect to an (M+1)-th touch signal processing circuit TS(M+1), or, if M is less than i, controls the M-th switching circuit SWM to connect to the M-th touch signal processing circuit TSM, and controls the N-th switching circuit SWN to connect to the backup processing circuit BU. The controller 40 controls the backup processing circuit BU and the N touch signal processing circuits TS1-TSN except the i-th touch signal processing circuit TSM to receive N analog touch signals through the N switching circuits SW1-SWN, respectively, and processes the N analog touch signals to obtain N digital signals.
[0030] Figure 3 and Figure 4 This is only a possible implementation of the touch control system of the present invention. The touch control system of the present invention may include an additional backup circuit. A person skilled in the art may change the connection between the switch circuit, the touch signal processing circuit and the backup circuit, but is not limited thereto. In this way, when more touch signal processing circuits fail, the touch control system can still operate normally. For example, Figure 5 As shown, a touch control system 4 includes N touch signal processing circuit groups TSGroup1-TSGroupN and a backup processing circuit group BUGroup. When any of the N touch signal processing circuit groups TSGroup1-TSGroupN fails, the backup processing circuit group BUGroup can replace the failed touch signal processing circuit group, so that the touch control system 4 can operate normally.
[0031] The operation of the touch control systems 2 to 4 can be summarized as a touch control signal processing method 6, such as Figure 6 The touch signal processing method 6 comprises the following steps:
[0032] Step S600: Start.
[0033] Step S602: Determine whether one of the N touch signal processing circuits is faulty and generate a determination result.
[0034] Step S604: according to the determination result, controlling the N touch signal processing circuits and the backup processing circuit to process the N analog touch signals received by the touch panel to obtain N digital signals.
[0035] Step S606: End.
[0036] For detailed description of the touch signal processing method 6 and its derivative changes, please refer to the above description, which will not be repeated here.
[0037] In summary, the touch control system and touch signal processing method of the present invention utilize a backup processing circuit to replace a failed touch signal processing circuit, so as to ensure that the touch control system can still operate normally when part of the touch signal processing circuit fails.
[0038] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the claims of the present invention should fall within the scope of the present invention.
Claims
1. A circuit for a touch panel, comprising: N touch signal processing circuits; a backup processing circuit; and A controller is coupled to the N touch signal processing circuits and the standby processing circuit, and is used to determine whether one of the N touch signal processing circuits is faulty and generate a determination result, and is used to control the N touch signal processing circuits and the standby processing circuit to process the N touch signals received by the touch panel according to the determination result to obtain N digital signals.
2. The circuit as claimed in claim 1, wherein when the determination result indicates that the N touch signal processing circuits have no faults, the controller turns off the standby processing circuit and controls the N touch signal processing circuits to process the N touch signals to obtain the N digital signals.
3. The circuit as claimed in claim 1, wherein when the judgment result indicates that an Mth touch signal processing circuit among the N touch signal processing circuits is faulty, the controller turns off the Mth touch signal processing circuit among the N touch signal processing circuits and turns on the standby processing circuit, and controls the standby processing circuit and the N touch signal processing circuits to process the N touch signals to obtain the N digital signals.
4. The circuit as claimed in claim 1, further comprising: N switching circuits are coupled to the touch panel and the controller, wherein an Mth switching circuit among the N switching circuits is switched to be connected to an Mth touch signal processing circuit or an (M+1)th touch signal processing circuit among the N touch signal processing circuits, and an Nth switching circuit among the N switching circuits is switched to be connected to an Nth touch signal processing circuit or the standby processing circuit among the N touch signal processing circuits; in, M is less than N.
5. The circuit of claim 4, wherein when the judgment result indicates that the N touch signal processing circuits have no faults, the controller controls the Mth switching circuit among the N switching circuits to be connected to the Mth touch signal processing circuit among the N touch signal processing circuits, and controls the Nth switching circuit among the N switching circuits to be connected to the Nth touch signal processing circuit among the N touch signal processing circuits, and the controller controls the N touch signal processing circuits to receive the N touch signals from the touch panel through the N switching circuits, and processes the N touch signals to obtain the N digital signals.
6. The circuit of claim 4, wherein when the judgment result indicates that an i-th touch signal processing circuit among the N touch signal processing circuits fails, if M is less than N and greater than or equal to i, the controller controls the M-th switching circuit among the N switching circuits to be connected to an (M+1)-th touch signal processing circuit among the N touch signal processing circuits, or if M is less than i, the controller controls the M-th switching circuit among the N switching circuits to be connected to the M-th touch signal processing circuit among the N touch signal processing circuits, and controls the N-th switching circuit among the N switching circuits to be connected to the standby processing circuit, and the controller controls the N touch signal processing circuits and the standby processing circuit to receive the N touch signals from the touch panel through the N switching circuits and process the N touch signals to obtain the N digital signals. 7 . The circuit as claimed in claim 1 , wherein each of the N touch signal processing circuits and the standby processing circuit are the same circuit and include an analog-to-digital converter and a digital filter.
8. A touch signal processing method, used in a circuit of a touch panel, comprising: Determine whether one of the N touch signal processing circuits is faulty and generate a determination result; The N touch signal processing circuits and a standby processing circuit of the control circuit process the N touch signals received by the touch panel according to the determination result to obtain N digital signals.
9. The touch signal processing method as claimed in claim 8, further comprising: When the determination result indicates that the N touch signal processing circuits have no faults, the standby processing circuit is turned off, and the N touch signal processing circuits process the N touch signals to obtain the N digital signals.
10. The touch signal processing method as claimed in claim 8, further comprising: When the judgment result indicates that an Mth touch signal processing circuit among the N touch signal processing circuits is faulty, the Mth touch signal processing circuit among the N touch signal processing circuits is turned off, and the standby processing circuit is turned on, and the N touch signals are processed by the standby processing circuit and the N touch signal processing circuits to obtain the N digital signals.