KEYPAD AND SENSOR COMBINATION TO PROVIDE DETECTION REGION THAT OVERLAYS KEYS

• US 20070247431A1
• Filed: 04/20/2006
• Published: 10/25/2007
• Est. Priority Date: 04/20/2006
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Skillman, Peter, Liu, Eric
• Application Number:
  US11/379,552
• Publication Number:
  US 20070247431A1
• Time in Patent Office: Days
• US Class Current: 345/169
• CPC Class Codes: G06F 3/023 Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
• CPC Class Codes: H01H 13/705 characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
• CPC Class Codes: H01H 2215/036 Metallic disc
• CPC Class Codes: H01H 2219/016 programmable
• CPC Class Codes: H01H 2219/02 programmable
• CPC Class Codes: H01H 2221/05 Force concentrator; Actuating dimple
• CPC Class Codes: H01H 2239/006 Containing a capacitive switch or usable as such
• CPC Class Codes: H01H 2239/074 Actuation by finger touch

Abstract

A computing device is provided comprising a keypad having a plurality of key structures, and a sensor mechanism. The sensor mechanism is positioned with respect to the keypad to provide a sensor detection region that overlays at least a portion of the keypad. The sensor mechanism is configured to detect an object in the sensor detection region and provide an output indicating the detected. The computing device further includes one or more processors that are programmed, instructed or otherwise configured to (i) receive an input signal that corresponds to the output of the sensor mechanism; and (ii) perform an operation in response to the input signal.

Claims

1. A computing device comprising:

a keypad having a plurality of key structures;

a sensor mechanism that is positioned with respect to the keypad to provide a sensor detection region that overlays at least a portion of the keypad, wherein the sensor mechanism is configured to detect an object in the sensor detection region and provide an output indicating the detected object; and

one or more processors configured to;

receive an input signal that corresponds to the output of the sensor mechanism; and

perform an operation in response to the input signal.

2. The computing device of claim 1, wherein the sensor mechanism underlies at least a portion of the keypad.

3. The computing device of claim 2, wherein the computing device comprises:

an electrical contact layer comprising a plurality of electrical contacts; and

wherein individual key structures of the keypad are aligned with a corresponding electrical contact in the electrical contact layer, and wherein the individual key structures are configured to travel inward to actuate the corresponding electrical contact layer; and

wherein the sensor mechanism is provided as a layer between the keypad and the electrical contact layer.

4. The computing device of claim 3, wherein individual key structures of the key pad are provided actuation members that pierce through the layer of the sensor mechanism in order to actuate the corresponding electrical contact.

5. The computing device of claim 4, wherein individual key structures of the key pad are provided actuation members that push against the layer of the sensor mechanism in order to actuate the corresponding electrical contact.

6. The computing device of claim 1, wherein the sensor mechanism is a capacitive field sensor.

7. The computing device of claim 1, wherein the processor interprets the output of the sensor mechanism to correspond to at least one of (i) a presence of an object in the sensor detection region, (ii) a position of the object in the sensor detection region, (iii) a direction of movement of the object in the sensor detection region, (iv) a velocity of acceleration of the movement of the object in the sensor detection region, or (v) a proximity of the object to individual key structures in the keypad.

8. The computing device of claim 1, wherein the sensor detection region overlays at least a portion of the keypad so that the sensor mechanism detects an object in the sensor detection region only when the object contacts one or more key structures in the keypad.

9. The computing device of claim 1, wherein the operation performed by the one or more processors include one or more operations selected from a group of operations consisting of:

(i) an operation for altering a lighting state of one or more components of the computing device, (ii) an operation for altering an operating state of the computing device, (iii) an operation for altering the operating state of one or more components of the computing device, (iv) an operation for altering a mode of operation of the computing device or one or more components of the computing device, (v) a scrolling operation, or (vi) a navigation operation.

10. The computing device of claim 9, wherein the one or more components include a component selected from a group consisting of (i) a battery module, (ii) a display, (iii) a wireless radio, (iv) a speaker, and (v) a microphone.

11. A computing device comprising:

an electrical contact layer comprising a plurality of electrical contacts;

a key structure layer comprising a plurality of key structures, wherein each of the plurality of key structures is configured to travel inward to cause a switching event with an electrical contact of the electrical contact layer; and

a sensor mechanism provided at least in part between the key structure layer and the electrical contact layer, wherein the sensor mechanism is configured to generate an output that indicates a change in a field property of the sensor mechanism; and

one or more processors configured to;

receive an input signal that corresponds to the output of the sensor mechanism; and

perform an operation in response to the input signal

12. The computing device of claim 11, wherein the sensor mechanism is configured to produce the change in the field property in response to an object'"'"'s presence a distance away from a contact surface of one or more of the plurality of key structures.

13. The computing device of claim 11, wherein the processor is configured to change a state of one or more components of the computing device in response to the input signal.

14. The computing device of claim 13, wherein the processor is configured to change one or more of a (i) a lighting state of a backlight of the key layer, (ii) a power state of a display of the computing device, (iii) a display state of the display of the computing device, (iv) an operational mode of a user-interface feature, and (v) a wake state of the computing device.

15. The computing device of claim 11, wherein the sensor mechanism is configured to generate the output when an object makes contact with the contact surface of one or more of the plurality of key structures, wherein the object making contact does not cause inward travel sufficient to cause the switching event.

16. The computing device of claim 11, wherein the sensor mechanism is capable of producing a capacitive change in response to an object being brought into a range of the pad.

17. The computing device of claim 16, wherein the sensor mechanism is capable of producing the capacitive change in response to the object being moved within the range of the pad.

18. The computing device of claim 16, wherein the sensor mechanism is configured to generate the output that is indicate of a proximity of the object to the contact surface of the one

19. The computing device of claim 11, further comprising a display, and wherein the processor is configured to perform the operation that affects what is displayed on the display.

20. The computing device of claim 11, further comprising a plurality of input/output components, and wherein the operation performed by the processor affects an operation status of one or more of the plurality of input/output components.

21. The computing device of claim 11, wherein the sensor mechanism is configured to generate the output to indicate a lateral direction of a movement of an object within a range of the sensor mechanism, and wherein the processor performs the operation based in part on the lateral direction.

22. The computing device of claim 21, wherein the operation performed by the processor corresponds to one or more of (i) a scrolling operation, (ii) a navigation operation, or (iii) a selection operation.

23. The computing device of claim 21, wherein the sensor mechanism is configured to generate the output to indicate a speed of the lateral movement.

24. The computing device of claim 11, wherein the sensor mechanism is configured to process the input signal as a gross input.

25. A key structure assembly comprising:

a key structure layer comprising a plurality of key structures, wherein each of the plurality of key structures is configured to travel inward to cause a switching event with an electrical contact layer; and

a sensor layer provided at least in part between the key layer and the electrical contact layer; and

wherein the sensor layer is configured to generate an output that indicates a capacitive change in the sensor layer.

26. The key structure of assembly of claim 25, wherein the sensor layer is configured to produce the capacitive change in response to an object'"'"'s presence a distance away from a contact surface of one or more of the plurality of key structures.

27. The key structure assembly of claim 25, wherein the sensor layer is configured to generate the output in response to contact of the object with the contact surface of one or more of the plurality of key structures, wherein the contact does not cause inward travel sufficient to cause the switching event.

28. The key structure assembly of claim 25, wherein the capacitive later is configured to generate the output to indicate a proximity of the object to the contact surface of the one or more key structures.

29. The key structure assembly of claim 25, wherein the sensor layer is configured to produce the capacitive change in response to the object having a lateral movement that spans an area that overlays multiple key structures.

30. The key structure assembly of claim 29, wherein the sensor layer is configured to generate the output to indicate a direction of the lateral movement.

31. The key structure assembly of claim 29, wherein the sensor layer is configured to generate the output to indicate a speed of the lateral movement.

32. The key structure assembly of claim 25, further comprising an actuation member layer, wherein the actuation member layer includes an actuation member for each key structure in the plurality of key structures, and wherein each actuation member (i) extends from a bottom region of a corresponding key structure in the plurality of key structures and (ii) is aligned with an electrical contact of the electrical contact layer, wherein the inward travel of the corresponding key structure causes the switching event.

33. The key structure assembly of claim 32, wherein at least some of the actuation members of the actuation member layer are merged or joined with the bottom region of the corresponding key structure.

35. The key structure assembly of claim 32, wherein at least some of the actuation members of the actuation member layer extend against, but not through the sensor layer.

36. The key structure assembly of claim 35, wherein the sensor layer is provided on a matrix, and wherein the matrix is deflectable, by one or more individual actuation members in the actuation member layer, into the electrical contact aligned with that individual actuation member.

34. The key structure assembly of claim 322, wherein at least some of the actuation members of the actuation member layer extend through the sensor layer to make connect with the electrical contact of the electrical contact layer.

37. A method for operating a computing device, the method comprising:

detecting a presence of an object, either in contact with or within a designated range from, a contact surface of one or more key structures of the computing device;

processing the detected presence as an input, independent of inward travel of any of the one or more key structures.

38. The method of claim 37, wherein detecting a presence includes detecting one or more of (i) a position of the object, (ii) a movement of the object, or (iii) a proximity of the object, to the contact surface of the one or more key structures.

39. The method of claim 37, further comprising performing a navigation operation in response to processing the input.

40. The method of claim 37, further comprising performing a scrolling operation in response to processing input.

41. The method of claim 37, further comprising changing a state of one or more components of the computing device in response to processing the input.

42. The method of claim 40, wherein the one or more components include (i) a display component, (ii) a backlight for the one or more key structures, (iii) a wireless communication component, or (iv) an audio component.

43. The method of claim 37, further comprising changing a mode of the computing device in response to processing the input.