Apparatus with one or more capacitive touchpads as interface

• US 20050162404A1
• Filed: 01/04/2005
• Published: 07/28/2005
• Est. Priority Date: 01/08/2004
• Status: Abandoned Application

• Current Assignee: Elan Microelectronics Corporation
• Original Assignee: Elan Microelectronics Corporation
• Inventors: Chiu, Yen-Chang, Chien, Yung-Lieh, Tang, Cheng-Hao
• Application Number:
  US11/028,210
• Publication Number:
  US 20050162404A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/03543 Mice or pucks G06F3/03541 takes precedence
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

An apparatus comprises a case, one or more capacitive touchpads mounted on the case for serving as the input interface of the apparatus, and a microprocessor within the case connected to the capacitive touchpads. Each of the capacitive pads generates a signal representative of capacitance change in response to a touch thereon, and the microprocessor determines the displacement, moving speed, relative position, or continuing and discontinuing time of the touch from the signal representative of capacitance change, to accordingly generate corresponding output as a button, Z-axis or scrolling signal.

Claims

1. An apparatus comprising:

a mouse case;

a capacitive touchpad mounted on the mouse case, and for generating a signal representative of capacitance change in response to a touch thereon; and

a microprocessor within the mouse case, and connected to the capacitive touchpad for generating a Z-axis signal in response to the signal representative of capacitance change.

2. The apparatus of claim 1, wherein the Z-axis signal comprises an information of displacement, moving speed, relative position, or continuing and discontinuing time of the touch.

3. The apparatus of claim 1, wherein the Z-axis signal comprises an information of scrolling on a window.

4. The apparatus of claim 1, wherein the Z-axis signal comprises an information of acceleration of scrolling on a window.

5. The apparatus of claim 1, wherein the Z-axis signal comprises an information of button.

6. The apparatus of claim 5, wherein the information of button defines a function key or hot key.

7. The apparatus of claim 1, wherein the capacitive touchpad comprises a saw structure thereon.

8. An apparatus comprising:

a mouse case;

a first capacitive touchpad mounted on the mouse case, and for generating a first signal representative of capacitance change in response to a first touch thereon;

a second capacitive touchpad mounted on the mouse case, and for generating a second signal representative of capacitance change in response to a second touch thereon; and

a microprocessor within the mouse case, and connected to the first and second capacitive touchpads for generating a first Z-axis signal in response to the first signal representative of capacitance change and a second Z-axis signal in response to the second signal representative of capacitance change, respectively.

9. The apparatus of claim 8, wherein the first Z-axis signal comprises a first information of displacement, moving speed, relative position, or continuing and discontinuing time of the first touch, and the second Z-axis signal comprises a second information of displacement, moving speed, relative position, or continuing and discontinuing time of the second touch.

10. The apparatus of claim 8, wherein the first Z-axis signal comprises a first information of scrolling on a window in a first direction, and the second Z-axis signal comprises a second information of scrolling on the window in a second direction.

11. The apparatus of claim 10, wherein the first and second directions are defined to be a vertical direction and a horizontal direction of the window, respectively.

12. The apparatus of claim 8, wherein the first Z-axis signal comprises a first information of acceleration of scrolling on a window in a first direction, and the second Z-axis signal comprises a second information of acceleration of scrolling on the window in a second direction.

13. The apparatus of claim 12, wherein the first and second directions are defined to be a vertical direction and a horizontal direction of the window, respectively.

14. The apparatus of claim 8, wherein the first Z-axis signal comprises an information of button.

15. The apparatus of claim 14, wherein the information of button defines a function key or hot key.

16. The apparatus of claim 8, wherein the second Z-axis signal comprises an information of button.

17. The apparatus of claim 16, wherein the information of button defines a function key or hot key.

18. The apparatus of claim 8, wherein the first capacitive touchpad comprises a saw structure thereon.

19. The apparatus of claim 8, wherein the second capacitive touchpad comprises a saw structure thereon.

20. An apparatus comprising:

a keyboard case;

a capacitive touchpad mounted on the keyboard case, and for generating a signal representative of capacitance change in response to a touch thereon; and

a microprocessor within the keyboard case, and connected to the capacitive touchpad for generating a scrolling signal in response to the signal representative of capacitance change.

21. The apparatus of claim 20, wherein the scrolling signal comprises an information of displacement, moving speed, relative position, or continuing and discontinuing time of the touch.

22. The apparatus of claim 20, wherein the scrolling signal comprises an information of scrolling on a window.

23. The apparatus of claim 20, wherein the scrolling signal comprises an information of acceleration of scrolling on a window.

24. The apparatus of claim 20, wherein the scrolling signal comprises an information of button.

25. The apparatus of claim 24, wherein the information of button defines a function key or hot key.

26. The apparatus of claim 20, wherein the capacitive touchpad comprises a saw structure thereon.

27. An apparatus comprising:

a keyboard case;

a first capacitive touchpad mounted on the keyboard case, and for generating a first signal representative of capacitance change in response to a first touch thereon;

a second capacitive touchpad mounted on the keyboard case, and for generating a second signal representative of capacitance change in response to a second touch thereon; and

a microprocessor within the keyboard case, and connected to the first and second capacitive touchpads for generating a vertical scrolling signal in response to the first signal representative of capacitance change and a horizontal scrolling signal in response to the second signal representative of capacitance change, respectively.

28. The apparatus of claim 27, wherein the vertical scrolling signal comprises a first information of displacement, moving speed, relative position, or continuing and discontinuing time of the first touch, and the horizontal scrolling signal comprises a second information of displacement, moving speed, relative position, or continuing and discontinuing time of the second touch.

29. The apparatus of claim 27, wherein the vertical scrolling signal comprises a first information of scrolling on a window in a vertical direction, and the horizontal scrolling signal comprises a second information of scrolling on the window in a horizontal direction.

30. The apparatus of claim 27, wherein the vertical scrolling signal comprises a first information of acceleration of scrolling on a window in a vertical direction, and the horizontal scrolling signal comprises a second information of acceleration of scrolling on the window in a horizontal direction.

31. The apparatus of claim 27, wherein the vertical scrolling signal comprises an information of button.

32. The apparatus of claim 31, wherein the information of button defines a function key or hot key.

33. The apparatus of claim 27, wherein the horizontal scrolling signal comprises an information of button.

34. The apparatus of claim 33, wherein the information of button defines a function key or hot key.

35. The apparatus of claim 27, wherein the first capacitive touchpad comprises a saw structure thereon.

36. The apparatus of claim 27, wherein the second capacitive touchpad comprises a saw structure thereon.

37. An apparatus comprising:

a mouse case;

a first capacitive touchpad mounted on the mouse case, and for generating a first signal representative of capacitance change in response to a first touch thereon;

a second capacitive touchpad mounted on the mouse case, and for generating a second signal representative of capacitance change in response to a second touch thereon; and

a microprocessor within the mouse case, and connected to the first and second capacitive touchpads for generating a first button signal in response to the first signal representative of capacitance change and a second button signal in response to the second signal representative of capacitance change, respectively.

38. The apparatus of claim 37, wherein the first capacitive touchpad is defined to be a left button of a mouse, and the second capacitive touchpad is defined to be a right button of the mouse.

39. The apparatus of claim 38, further comprising a third capacitive touchpad between the first and second capacitive touchpads, and defined to be a middle button of the mouse for generating a third signal representative of capacitance change in response to a third touch thereon, to further generate a third button signal by the microprocessor.

40. The apparatus of claim 39, wherein the third button signal defines a function key or hot key.

41. A apparatus comprising:

a mouse case;

a capacitive touchpad mounted on the mouse case, and having one or more patterns thereon, each of the patterns defined to be a button or a Z-axis for generating a signal representative of capacitance change in response to a touch thereon; and

a microprocessor within the mouse case, and connected to the capacitive touchpad for generating a button signal or a Z-axis signal in response to the signal representative of capacitance change.

42. The apparatus of claim 41, wherein the patterns comprise a left button and a right button of a mouse.

43. The apparatus of claim 42, wherein the patterns further comprises a middle button of the mouse.

44. The apparatus of claim 43, wherein the middle button defines a function key or hot key.

45. The apparatus of claim 41, wherein the patterns comprise a Z-axis of a mouse.

46. The apparatus of claim 45, wherein the Z-axis signal comprises an information of scrolling on a window.

47. The apparatus of claim 45, wherein the Z-axis signal comprises an information of acceleration of scrolling on a window.

48. The apparatus of claim 45, wherein the capacitive touchpad comprises a saw structure thereon.

49. An apparatus comprising:

a keyboard case;

a capacitive touchpad mounted on the keyboard case, and having one or more patterns thereon, each of the patterns defined to be a scrolling mechanism for generating a signal representative of capacitance change in response to a touch thereon; and

a microprocessor within the keyboard case, and connected to the capacitive touchpads for generating a scrolling signal in response to the signal representative of capacitance change.

50. The apparatus of claim 49, wherein the patterns further comprises a left button and a right button of a mouse.

51. The apparatus of claim 50, wherein the patterns further comprises a middle button of the mouse.

52. The apparatus of claim 49, wherein the patterns further comprises one or more function keys or hot keys.

53. The apparatus of claim 49, wherein the scrolling signal comprises an information of scrolling on a window.

54. The apparatus of claim 49, wherein the scrolling signal comprises an information of acceleration of scrolling on a window.

55. The apparatus of claim 49, wherein the capacitive touchpad comprises a saw structure thereon.

56. An apparatus comprising:

a case;

a capacitive touchpad mounted on the case, and serving as an input interface of the apparatus for generating a signal representative of capacitance change in response to a touch thereon; and

a microprocessor within the case, and connected to the capacitive touchpad for generating a Z-axis signal in response to the signal representative of capacitance change.

57. The apparatus of claim 56, wherein the Z-axis signal comprises an information of scrolling on a window in a vertical direction.

58. The apparatus of claim 56, wherein the Z-axis signal comprises an information of scrolling on a window in a horizontal direction.

59. The apparatus of claim 56, wherein the Z-axis signal comprises an information of acceleration of scrolling on a window in a vertical direction.

60. The apparatus of claim 56, wherein the Z-axis signal comprises an information of acceleration of scrolling on a window in a horizontal direction.

61. The apparatus of claim 56, wherein the microprocessor further generates a button signal in response to a second signal representative of capacitance change resulted from a second touch.