Force-based input device having an elevated contacting surface

• US 20080030482A1
• Filed: 07/31/2007
• Published: 02/07/2008
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: QSI Incorporated (Quanta Services Incorporated)
• Original Assignee: QSI Incorporated (Quanta Services Incorporated)
• Inventors: Mullins, James, Soss, David, Elwell, James, Stanley, Karen
• Application Number:
  US11/888,673
• Publication Number:
  US 20080030482A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/04142 the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate

Abstract

A projected force-based input device comprising a projected or elevated contacting element configured to receive an applied force, a sensing element located in a different plane with respect to the contacting element, and a sensing portion operably supported to displace in response to the applied force. The sensing element further comprises a plurality of sensors operable to output sensor data corresponding to the applied force, wherein the sensor data facilitates the determination of a location of the applied force occurring about the contacting element, as well as the profile of the applied force over time (e.g., waveform), otherwise known as the force profile. One or more transfer elements may also be present, which function to relate the contacting element to the sensing portion of the sensing element so as to transfer substantially all of the applied force from the contacting element to the sensing element. Adequate rigidity between the elevated contacting element, and transfer elements, and the sensing element is intended to be maintained in order to prevent interference with any mounting or other structures or objects, and to permit the input device to operate properly.

Claims

1. A projected force-based input device comprising:

a sensing element having a mounting portion and a sensing portion operable to detect and measure an applied force;

a plurality of force sensors operable within said sensing portion to measure a resultant characteristic of said applied force, and to output sensor data corresponding to said resultant characteristic;

a contacting element elevated at least partially from said sensing element and having a contacting surface operable to initially receive said applied force;

means for projecting substantially all of said applied force from said contacting element to said sensing portion of said sensing element to cause said resultant characteristic be detected and measured by said sensors as if said applied force were acting directly on said sensing element; and

processing means operable to receive and process said sensor data, and to determine a location or other characteristic of said applied force as acting on said contacting surface of said contacting element.

2. The projected force-based input device of claim 1, wherein said means for projecting comprises a force transfer element configured to relate said contacting element to said sensing portion, and to position these in a spaced apart configuration.

3. The projected force-based input device of claim 1 or 2, wherein said sensing element, said contacting element and, optionally, said force transfer element are assembled with sufficient rigidity so as to prevent interference of either of said contacting and sensing elements and said force transfer element with a mounting object.

4. The projected force-based input device of claim 1, wherein said means for projecting comprises said contacting element and said sensing element being in direct contact with one another such that said applied force is transferred from said contacting element directly to said sensing element.

5. The projected force-based input device of claim 1, wherein said sensing element comprises:

a base support having a mounted periphery and a plurality of apertures formed near said periphery to define said periphery and said sensing portion, said sensing portion being operable to displace under said applied force acting on said contacting element as transferred to said sensing portion; and

a plurality of isolated beam segments defined by said plurality of apertures and operable to receive resultant forces distributed to said isolated beam segments by the displacement of said sensing portion.

6. The projected force-based input device of claim 5, wherein said force sensors are operable with said isolated beam segments to measure a resultant characteristic of said applied force in the form of strain acting within a respective isolated beam segment, said strain occurring as a result of various stresses being induced within said isolated beam segment as a result of said projection of said applied forces to said sensing portion.

7. The projected force-based input device of claim 1, wherein said sensing element comprises:

a first structural element supported in a fixed position;

a second structural element operable with said first structural element, and dynamically supported to be movable with respect to said first structural element to define a sensing portion configured to displace under said applied force as transferred to said sensing portion; and

a plurality of isolated beam segments joining said first and second structural elements, said isolated beam segments being operable to transfer forces between said first and second structural elements, and to receive resultant forces distributed to said isolated beam segments upon displacement of said sensing portion.

8. The projected force-based input device of claim 7, wherein said first structural element comprises an outer mounting portion, and said second structural element comprises said sensing portion as circumscribed by said outer mounting portion and optionally an inner mounting portion.

9. The projected force-based input device of claim 7, wherein said first structural element comprises an inner mounting portion, and said second structural element comprises said sensing portion as positioned about said periphery of said sensing element, wherein said inner mounting portion is circumscribed by said sensing portion.

10. The projected force-based input device of claim 1, wherein said sensing element comprises a non-planar, multi-elevational configuration.

11. The projected force-based input device of claim 1, wherein said sensing element comprises at least one cut-out portion.

12. The projected force-based input device of claim 1, wherein said sensing and contacting elements are each able to receive an applied force.

13. The projected force-based input device of claim 1, further comprising a plurality of contacting elements operable with said sensing element, wherein each of said plurality of contacting elements is capable of receiving an applied force subsequently projected to said sensing element.

14. The projected force-based input device of claim 1, wherein said contacting element comprises a configuration selected from the group consisting of a non-planar, multi-elevational configuration, a flat, planar configuration, an arbitrarily shaped geometric configuration, a standard geometric configuration, and any combination of these.

15. The projected force-based input device of claim 1, wherein said contacting element comprises portions located at different elevational distances from said sensing element.

16. The projected force-based input device of claim 1, wherein said contacting element is formed of multiple different materials, each one operating to provide a functional contacting surface.

17. The projected force-based input device of claim 1, wherein said contacting element comprises at least one cut-out portion.

18. The projected force-based input device of claim 1, wherein said contacting element comprises a periphery that at least partially extends beyond an x-y boundary of said force sensors, said force sensors measuring inverse measurements caused by different applied forces acting on said contacting element within and without said x-y boundary.

19. The projected force-based input device of claim 1, wherein said contacting element is oriented on an incline or in a non-parallel position with respect to said sensing element.

20. The projected force-based input device of claim 1, wherein said contacting element comprises multiple contacting surfaces, each one operable to receive an applied force for subsequent projection to said sensing element.

21. The projected force-based input device of claim 20, wherein said multiple contacting surfaces are oriented so as to face in opposing directions.

22. The projected force-based input device of claim 2, wherein said force transfer element comprises different sizes to accommodate various multi-elevational configurations of at least one of said contacting and sensing elements.

23. The projected force-based input device of claim 2, wherein said force transfer element comprises a protruding member formed from said sensing element.

24. The projected force-based input device of claim 2, wherein said force transfer element is mounted to said sensing and contacting elements using one or more fastening means.

25. The projected force-based input device of claim 2, wherein said force transfer element comprises a structural configuration selected from the group consisting of a solid structure and a structure having a hollow interior, each one of these being sufficiently rigid so as to facilitate proper transfer of said applied force from said contacting element to said sensing element.

26. The projected force-based input device of claim 2, wherein said force transfer element comprises a spring having a spring constant of sufficient stiffness so as to facilitate proper transfer of said applied force from said contacting element to said sensing element.

27. The projected force-based input device of claim 2, wherein said force transfer element is oriented on an incline with respect to said sensing and contacting elements.

28. The projected force-based input device of claim 1, further comprising lighting means positioned about at least one of said contacting and sensing elements, said lighting means providing one or more lighting functions to said input device.

29. The projected force-based input device of claim 28, wherein said lighting means is disposed between said contacting element and said sensing element.

30. The projected force-based input device of claim 1, further comprising a partition disposed between said contacting element and said sensing element, said partition operating with said contacting and sensing elements, and any force transfer elements, to conceal said sensing element, and to provide one or more aesthetic or utility functions to said input device.

31. The projected force-based input device of claim 30, wherein said at least a fixed part of said sensing element is mountable to said partition for support.

32. The projected force-based input device of claim 1, further comprising one or more user interface objects supported about at least one of said contacting and sensing elements, said user interface object providing one or more interface functions.

33. A projected force-based input device comprising:

a contact plane having a contact surface for receiving an applied force;

a sensing plane offset from said contact plane, and comprising a sensing element having a sensing portion;

a plurality of sensors operable within said sensing portion to output sensor data corresponding to said applied force, wherein said sensor data facilitates the determination of a location or other characteristic of said applied force as occurring about said contact plane; and

at least one force transfer element that transfers substantially all of said applied force occurring about said contact plane to said sensing portion of said sensing plane.

34. The projected force-based input device of claim 33, wherein said contact plane is parallel to said sensing plane.

35. The projected force-based input device of claim 33, wherein said contact plane is oriented on an incline with respect to said sensing plane.

36. A projected force-based input device comprising:

a contacting element contained within a contact plane, and having a contacting surface configured to receive an applied force;

a sensing element contained within a sensing plane, and having a plurality of sensors operable therewith to output sensor data corresponding to said applied force, wherein said sensor data facilitates the determination of a location or other characteristic of said applied force about said contacting element; and

a transfer element configured to project said contacting plane away from said sensing plane, and to transfer substantially all of said applied force from said contacting element to said sensing element.

37. Within a projected force-based input device, a method for determining a location or other characteristic of an applied force and for performing one or more operations, said method comprising:

receiving an applied force about a contacting surface of an elevated contacting element;

transferring said applied force to a sensing portion of a sensing element supported in a different elevation with respect to said contacting element, said sensing element having a plurality of sensors operable to output sensor data corresponding to said applied force;

measuring a characteristic of said applied force;

generating sensor data based on said measured characteristic; and

processing said sensor data to determine a location or other characteristic of said applied force occurring about said contacting element.

38. The method of claim 37, further comprising executing a command causing said input device to perform an intended operation upon receiving said applied force and determining said location or other characteristic of said applied force about said contacting element.

39. A method for constructing a projected force-based input device, said method comprising:

providing a sensing element having a mounting portion and a sensing portion operable to detect an applied force;

securing said mounting portion of said sensing element;

supporting said sensing portion of said sensing element so as to be movable with respect to said mounting portion;

providing a plurality of force sensors operable within said sensing portion to measure a resultant characteristic of said applied force, and to output sensor data corresponding to said resultant characteristic;

positioning a contacting element in a different elevation with respect to said sensing element, said contacting element having a contacting surface operable to initially receive said applied force;

relating said sensing element to said contacting element with sufficient rigidity so as to effectuate transfer of substantially all of said applied force from said contacting element to said sensing element, said contacting element projecting substantially all of said applied force to said sensing portion of said sensing element to cause said resultant characteristic be detected and measured by said sensors as if said applied force were occurring directly about said sensing element; and

providing processing means operable to receive and process said sensor data, and to determine a location or other characteristic of said applied force as acting on said contacting surface of said contacting element.

40. The method of claim 39, further comprising concealing said sensing element behind a partition, said partition being disposed between said contacting element and said sensing element.

41. The method of claim 40, further comprising sealing said partition with respect to at least one component of said input device.