AUTOMATIC DETECTION AND RECOVERY TOUCH SYSTEM AND RESET APPARATUS THEREOF

• US 20110234531A1
• Filed: 09/26/2010
• Published: 09/29/2011
• Est. Priority Date: 01/29/2010
• Status: Abandoned Application

• Current Assignee: TVM Corp.
• Original Assignee: TVM Corp.
• Inventors: Hsieh, Fu-Fa, Chien, Ta-Wen
• Application Number:
  US12/890,665
• Publication Number:
  US 20110234531A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 1/24 Resetting means
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: H03K 5/04 by increasing duration; by decreasing duration

Abstract

The present invention is directed to a reset apparatus adaptable to an automatic detection and recovery touch system, which primarily includes an environment sensor and a reset control circuit. The environment sensor detects touch environment surrounding a touch device, and generates an environment change signal corresponding to a change of the touch environment. The reset control circuit directs the touch device to reset according to the environment change signal.

Claims

1. A reset apparatus, comprising:

an environment sensor configured to detect touch environment surrounding a touch device and generate an environment change signal corresponding to a change of the touch environment; and

a reset control circuit configured to direct the touch device to reset according to the environment change signal.

2. The reset apparatus of claim 1, wherein the environment change signal indicates an open or close state of a chassis enclosing the touch device.

3. The reset apparatus of claim 1, wherein the environment change signal indicates a change of an electrical field of the touch device.

4. The reset apparatus of claim 1, wherein the touch device comprises a touch panel.

5. The reset apparatus of claim 4, wherein the touch panel is a capacitive touch panel.

6. The reset apparatus of claim 1, wherein the reset control circuit comprises a power switch controlled by the environment change signal, whereby when the environment change signal is active, the power switch grounds the touch device, and when the environment change signal is passive, the power switch provides power supply to the touch device to perform resetting.

7. The reset apparatus of claim 6, wherein the reset control circuit comprises an invert buffer.

8. A reset apparatus, comprising:

a state detector configured to detect an open or close state of a chassis, enclosing a touch device, and generate a state signal according to the open or close state;

a control signal generating circuit configured to generate a control signal according to the state signal; and

a reset control circuit configured to direct the touch device to reset according to the control signal.

9. The reset apparatus of claim 8, wherein the chassis is of a material protecting the touch device from being exposed.

10. The reset apparatus of claim 8, wherein the chassis is a metal chassis.

11. The reset apparatus of claim 8, wherein the touch device comprises a touch panel.

12. The reset apparatus of claim 11, wherein the touch panel is a capacitive touch panel.

13. The reset apparatus of claim 8, wherein the state signal is an open state signal or close state signal indicating open or close state of the chassis, respectively.

14. The reset apparatus of claim 8, further comprising a voltage divider configured to clamp the state signal to a default voltage value.

15. The reset apparatus of claim 8, wherein the state detector is coupled to a chassis switch, when the chassis is opened or closed, the state detector generates a positive-edge state signal or a negative-edge state signal according to a changed state of the chassis switch.

16. The reset apparatus of claim 15, wherein the control signal generating circuit comprises at least one edge-triggered one-shot circuit which generates a one-shot signal after receiving the state signal.

17. The reset apparatus of claim 16, wherein the control signal generating circuit comprises a positive edge-triggered one-shot circuit and a negative edge-triggered one-shot circuit for receiving the positive-edge state signal and the negative-edge state signal respectively.

18. The reset apparatus of claim 17, further comprising a logic OR circuit coupled to outputs of the positive edge-triggered one-shot circuit and the negative edge-triggered one-shot circuit for passing the outputs through the logic OR gate.

19. The reset apparatus of claim 8, wherein the reset control circuit comprises a power switch controlled by the control signal, whereby when the control signal is active, the power switch grounds the touch device, and when the control signal is passive, the power switch provides power supply to the touch device to perform resetting.

20. The reset apparatus of claim 19, wherein the reset control circuit comprises an invert buffer.

21. The reset apparatus of claim 8, wherein an output of the reset control circuit is coupled to and controls a reset input node of a touch controller of the touch device for performing resetting.

22. A detection and recovery touch system, comprising:

a chassis which is capable of being opened or closed;

a touch device enclosed by the chassis;

a state detector configured to detect an open or close state of the chassis and generate a state signal according to the open or close state;

a control signal generating circuit configured to generate a control signal according to the state signal; and

a reset control circuit configured to direct the touch device to reset according to the control signal.

23. The system of claim 22, wherein the chassis is a metal chassis.

24. The system of claim 22, wherein the touch device comprises a touch panel.

25. The system of claim 24, wherein the touch panel is a capacitive touch panel.

26. The system of claim 22, wherein the state signal is an open state signal or close state signal indicating open or close state of the chassis, respectively.

27. The system of claim 22, further comprising a voltage divider configured to clamp the state signal to a default voltage value.

28. The system of claim 22, wherein the state detector is coupled to a chassis switch, whereby when the chassis is opened or closed, the state detector generates a positive-edge state signal or a negative-edge state signal according to a changed state of the chassis switch.

29. The system of claim 28, wherein the control signal generating circuit comprises at least one edge-triggered one-shot circuit which generates a one-shot signal after receiving the state signal.

30. The system of claim 29, wherein the control signal generating circuit comprises a positive edge-triggered one-shot circuit and a negative edge-triggered one-shot circuit for receiving the positive-edge state signal and the negative-edge state signal respectively.

31. The system of claim 30, further comprising a logic OR circuit coupled to outputs of the positive edge-triggered one-shot circuit and the negative edge-triggered one-shot circuit for passing the outputs through the logic OR gate.

32. The system of claim 22, wherein the reset control circuit comprises a power switch controlled by the control signal, whereby when the control signal is active, the power switch grounds the touch device, and when the control signal is passive, the power switch provides power supply to the touch device to perform resetting.

33. The system of claim 32, wherein the reset control circuit comprises an invert buffer.

34. The system of claim 22, wherein an output of the reset control circuit is coupled to and controls a reset input node of a touch controller of the touch device for performing resetting.

35. The system of claim 22, wherein the touch device comprises a touch panel and a touch controller, with the reset control circuit directing the touch panel to reset.

36. The system of claim 22, wherein the touch device comprises a touch panel and a touch controller, the reset control circuit directing the touch controller to reset.

37. A system, comprising:

a touch controller;

a sensor;

a circuit; and

means for resetting the touch controller such that the changing environment condition does not affect an operation of the touch controller.

38. The system of claim 37, wherein the sensor is configured to detect a changing environment condition surrounding the touch controller, and the circuit is configured to generate an environment change signal corresponding to the changing environment condition.

39. The system of claim 38, wherein the environment change signal indicates an open or close state of a chassis.

40. The system of claim 38, wherein the resetting means comprises a power switch which is controlled by the environment change signal, when the environment change signal is active, the touch controller is grounded via the power switch, when the environment change signal is passive, the touch controller is provided power supply via the power switch to perform resetting.

41. The system of claim 38, wherein the resetting means couples to control a reset input node of the touch controller for performing resetting.