Touchpad including non-overlapping sensors

• US 7,825,910 B2
• Filed: 02/02/2007
• Issued: 11/02/2010
• Est. Priority Date: 06/20/2006
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Won, Jong Sung
• Primary Examiner(s): Hjerpe; Richard
• Assistant Examiner(s): Sheng; Tom V
• Application Number:
  US11/670,617
• Publication Number:
  US 20070291013A1
• Time in Patent Office: 1,369 Days
• Field of Search: 345/173, 345/174, 345/175, 178 1801- 1809
• US Class Current: 345/173
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touchpad in which a user input is received includes at least first through third zones, with the first zone and the third zone being non-adjacent. The touchpad further includes at least first and second non-overlapping sensors, with the first sensor disposed in at least a portion of the first and the second zones and configured to transmit a first electrical signal in response to a user input, and the second sensor disposed in at least a portion of the first and the third zones and configured to transmit a second electrical signal in response to a user input. Moreover, the touchpad includes a controller configured to generate first information in response to receiving the first electrical signal but not the second electrical signal, second information in response to receiving both the first electrical signal and the second electrical signal, and third information in response to receiving the second electrical signal but not the first electrical signal. The first information, the second information, and/or the third information are output.

Claims

1. A device comprising:

a touchpad including at least first through third zones, the first zone and the third zone being non-adjacent;

at least first and second non-overlapping sensors, with the first sensor disposed in at least a portion of the first and the second zones and configured to transmit a first electrical signal in response to a user input, the second sensor disposed in at least a portion of the second and the third zones and configured to transmit a second electrical signal in response to a user input, and a boundary separating the first and second sensors in the second zone; and

a controller configured to generate;

first information in response to receiving the first electrical signal but not the second electrical signal,

second information in response to receiving both the first electrical signal and the second electrical signal, and

third information in response to receiving the second electrical signal but not the first electrical signal,

wherein the first and second sensors are oriented such that each of the first sensor and the second sensor are intersected by a first linear axis, which is perpendicular to a second linear axis that intersects each of a centroid of the first sensor and a centroid of the second sensor.

2. The device of claim 1, wherein the first zone and the second zone are adjacent.

3. The device of claim 1, wherein the first and the second non-overlapping sensors are capacitive sensors.

4. The device of claim 1, wherein the first and the second non-overlapping sensors are resistive sensors.

5. The device of claim 1, wherein the first zone, the second zone, and the third zone are associated with a media player function.

6. The device of claim 5, wherein the first, second, or third electrical signal is indicative of a Cartesian coordinate system movement.

7. The device of claim 5, wherein the first, second, or third electrical signal is indicative of a polar coordinate system movement.

8. The device of claim 1, wherein the boundary is a saw-tooth shaped boundary.

9. The device of claim 1, wherein the boundary is at least 0.2 millimeters wide.

10. The device of claim 1, wherein the second zone is in a center region of the touchpad.

11. The device of claim 1, wherein the first information corresponds to a function associated with the first zone.

12. The device of claim 1, wherein the second information corresponds to a function associated with the second zone.

13. The device of claim 1, wherein the third information corresponds to a function associated with the third zone.

14. The device of claim 1, wherein the user input includes a finger touch.

15. The device of claim 1 wherein the first and second sensors are oriented such that at least one of the first sensor and the second sensor is intersected by the first linear axis more than once.

16. A device comprising:

a touchpad having a circular shape and including a center zone and at least first through fourth zones formed around the center zone, with the first zone and the second zone being non-adjacent;

at least first and second non-overlapping sensors, with the first sensor being disposed in at least a portion of the first zone and the center zone and configured to transmit a first electrical signal in response to a user input, and the second sensor being disposed in at least a portion of the second zone and the center zone and configured to transmit a second electrical signal in response to a user input; and

a controller configured to detect the user input and to generate;

first information in response to receiving the first electrical signal but not the second electrical signal,

second information in response to receiving both the first electrical signal and the second electrical signal, and

third information in response to receiving the second electrical signal but not the first electrical signal.

17. The device of claim 16 wherein the touchpad is further surrounded by an outer touchpad having a circular shape, and the outer touchpad includes at least fifth through eight zones, wherein the fifth and sixth zones are non-adjacent.

18. The device of claim 17 further comprising third and fourth non-overlapping sensors, with the third sensor being disposed in at least a portion of the fifth zone and the center zone and configured to transmit a third electrical signal in response to the user input, and the fourth sensor being disposed in at least a portion of the sixth zone and the center zone and configured to transmit a fourth electrical signal in response to the user input.

19. The device of claim 18, wherein the controller is further configured to generate:

fourth information in response to receiving the third electrical signal but not the fourth electrical signal,

fifth information in response to receiving both the third electrical signal and the fourth electrical signal, and

sixth information in response to receiving the fourth electrical signal but not the third electrical signal.

20. The device of claim 18, wherein the first sensor and the second sensor are separated by a boundary in the center zone and the third sensor and the fourth sensor are separated by the boundary in the center zone.

21. The device of claim 20, wherein the boundary is a saw-tooth shaped boundary.

22. The device of claim 17, wherein the third zone and the fourth zone are associated with a media player function.

23. The device of claim 16, wherein the first zone and the second zone are based on a polar coordinate system and include radial input areas for processing input from a radial motion of the user input.

24. The device of claim 16, wherein the first zone and the second zone are based on a polar coordinate system and include angular input areas for processing input from a swirl motion of the user input.

25. The device of claim 16, wherein the first zone and the second zone are associated with a cursor acceleration or scrolling function.

26. The device of claim 25, wherein the user input includes rotation of an input tool on a surface of the first touchpad in a clockwise or a counterclockwise direction.

27. The device of claim 25, wherein the user input includes a finger touch.

28. The device of claim 16, wherein the first information is a menu manipulation signal.

29. The device of claim 16, wherein the first information is a navigation signal.

30. The device of claim 16, wherein the first information is an audio signal.

31. The device of claim 16, wherein the central zone is a button which is part of the touchpad and indistinct from the touchpad.

32. A method comprising:

receiving a user input on a touchpad, the touchpad including;

at least first through third zones, with the first zone and the third zone being non-adjacent,

at least first and second non-overlapping sensors, with the first sensor disposed in at least a portion of the first and the second zones and configured to transmit a first electrical signal in response to a user input, the second sensor disposed in at least a portion of the first and the third zones and configured to transmit a second electrical signal in response to the user input, and a boundary separating the first and second sensors in the second zone, and

a controller configured to generate;

first information in response to receiving the first electrical signal but not the second electrical signal,

second information in response to receiving both the first electrical signal and the second electrical signal, and

third information in response to receiving the second electrical signal but not the first electrical signal,

wherein the first and second sensors are oriented such that each of the first sensor and the second sensor are intersected by a first linear axis, which is perpendicular to a second linear axis that intersects each of a centroid of the first sensor and a centroid of the second sensor; and

outputting the first information, the second information, and/or the third information.

33. A device comprising:

a touchpad including a center zone and at least first through fourth zones positioned around the center zone, with the first zone and the second zone being non-adjacent;

at least first and second non-overlapping sensors, with the first sensor being disposed in at least a portion of the first zone and the center zone and configured to transmit a first electrical signal in response to a user input, and the second sensor being disposed in at least a portion of the second zone and the center zone and configured to transmit a second electrical signal in response to a user input; and

a controller configured to detect the user input and to generate differing information signals based on whether the first electrical signal, the second electrical signal, or the first and the second electrical signals are received.

34. The device of claim 33, wherein the touchpad has a circular shape.

35. The device of claim 33, wherein the controller is further configured to generate:

first information in response to receiving the first electrical signal but not the second electrical signal,

second information in response to receiving both the first electrical signal and the second electrical signal, and

third information in response to receiving the second electrical signal but not the first electrical signal.