Tiled touch system

• US 8,120,596 B2
• Filed: 05/21/2004
• Issued: 02/21/2012
• Est. Priority Date: 05/21/2004
• Status: Active Grant

• Current Assignee: PixArt Imaging Incorporated
• Original Assignee: Smart Technologies ULC (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Popovich, David Gregory, Hill, Douglas Blair, Vdovine, Serguei
• Primary Examiner(s): Sim, Yong H
• Application Number:
  US10/850,431
• Publication Number:
  US 20050259084A1
• Time in Patent Office: 2,832 Days
• Field of Search: 345/1.1, 345/173, 345156-158, 345/178, 345/1.3
• US Class Current: 345/178
• CPC Class Codes: G06F 3/04886 by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus

Abstract

A tiled touch system comprises a display on which a computer-generated image is presented. The image is formed of an array of image segments. A digitizer is mapped to the display and senses pointer contacts made thereon.

Claims

1. A tiled touch system comprising:

a display on which a computer-generated image is presented, said display comprising an array of display panels, each display panel having an active display area on which a segment of said computer-generated image is presented, the display areas of adjacent display panels being interrupted by physical gaps, said gaps defining non-active display regions;

at least one digitizer disposed on said display and providing a generally continuous contact surface overlying the active display areas and the non-active display regions corresponding to said gaps, said at least one digitizer being mapped to both said active display areas and said non-active display regions, said at least one digitizer comprising at least two imaging devices looking generally across said contact surface from different vantages and acquiring image frames to detect pointer contacts made on said contact surface over active display areas and on said contact surface over non-active display regions; and

at least one processing unit responsive to pointer data received from said at least one digitizer and updating said computer-generated image in response to detected pointer contacts on said contact surface, wherein mapping of said at least one digitizer to both said active display areas and said non-active display regions is performed during an orientation procedure, and wherein during said orientation procedure, said at least one processing unit updates the computer-generated image so that each display panel displays a plurality of orientation points.

2. A tiled touch system according to claim 1 wherein said image segments form portions of a generally continuous image presented over said display.

3. A tiled touch system according to claim 1 wherein said image segments are discrete.

4. A tiled touch system according to claim 1 wherein each display panel is a high resolution display panel.

5. A tiled touch system according to claim 1 wherein each image segment is projected onto the active display area of an associated display panel.

6. A tiled system according to claim 1 wherein said at least one processing unit processes received pointer data to recognize pointer contacts on the contact surface starting and/or stopping at locations that are mapped to the non-active display regions corresponding to the gaps as input commands.

7. A tiled touch system according to claim 1 wherein said at least one processing unit recognizes pointer contacts on said contact surface beginning and/or ending at locations that are mapped to the non-active display regions corresponding to said gaps as input command events.

8. A tiled touch system according to claim 1 further comprising selectable icons at locations that are mapped to the non-active display regions corresponding to said gaps.

9. A tiled touch system according to claim 1 wherein said at least one digitizer comprises a generally transparent, rigid pane overlying said display and having an upper surface defining said contact surface.

10. A tiled touch system according to claim 1 wherein said at least one processing unit tracks pointer movements along said contact surface traversing the non-active display regions corresponding to the gaps.

11. A tiled touch system according to claim 1 wherein each display panel displays at least four orientation points.

12. A tiled touch system according to claim 4 wherein said display panels are liquid crystal displays.

13. A tiled touch system according to claim 5 wherein said computer-generated image is formed of overlapping image segments.

14. A tiled touch system according to claim 13 wherein each display panel is a high resolution display panel.

15. A tiled touch system according to claim 6 wherein each display panel is a high resolution display panel.

16. A tiled touch system according to claim 14 wherein said display panels are liquid crystal displays.

17. A tiled touch system according to claim 14 wherein said at least one digitizer comprises a generally transparent, rigid pane overlying said display and having an upper surface defining said contact surface.

18. A tiled touch system according to claim 15 wherein said display panels are liquid crystal displays.

32. A tiled touch system according to claim 7 wherein said at least one processing unit executes an associated function in response each recognized input command event.

33. A tiled touch system according to claim 8 wherein said at least one processing unit executes an associated function in response to selection of one of said selectable icons.

35. A tiled touch surface according to claim 9 wherein said pane is formed of glass.

36. A tiled touch surface according to claim 17 wherein said pane is formed of glass.

49. A tiled touch system according to claim 10 further comprising selectable icons at locations that are mapped to the non-active display regions corresponding to the gaps.

19. A tiled touch system comprising:

a display comprising a plurality of display panels, each of said display panels comprising a matrix of display pixels defining an active display area and a border surrounding said display area thereby to interrupt said display and define non-active display regions, each display area presenting a portion of an image;

a digitizer comprising a continuous, generally transparent rigid pane on said display and defining a contact surface overlying both said active display areas and said non-active display regions, the contact surface of said transparent pane being mapped to said active display areas and said non-active display regions, said digitizer further comprising at least two imaging devices looking generally across said contact surface and capturing image frames from different vantages; and

at least one processing unit responsive to pointer data output by said digitizer and updating the image presented by said display in response to detected pointer contacts on said contact surface, contacts on said contact surface initiating at locations that are mapped to non-active display areas corresponding to the borders being recognized by said at least one processing unit as input command events, wherein the contact surface of the transparent pane is mapped to the active display areas and the non-active display regions during an orientation procedure, said mapping compensating for at least some of positional, scaling, rotation and keystone errors, and wherein during said orientation procedure, said at least one processing unit updates the computer-generated image so that each display panel displays a plurality of orientation points.

20. A tiled touch system according to claim 19 wherein said at least one processing unit further tracks pointer movements along said contact surface traversing borders between adjacent display panels.

21. A tiled touch system according to claim 19 wherein said at least one processing unit is at least one computer coupled to said display.

22. A tiled touch system according to claim 19 further comprising selectable icons at locations that are mapped to the non-active display corresponding to said borders.

23. A tiled touch system according to claim 19 wherein each display panel displays at least four orientation points.

24. A tiled touch system according to claim 20 wherein each display panel is a high resolution display panel.

25. A tiled touch system according to claim 20 wherein said at least one processing unit is at least one computer coupled to said display.

26. A tiled touch system according to claim 24 wherein said display panels are liquid crystal displays.

27. A tiled touch system according to claim 21 wherein said at least one computer is a single computer coupled to said display.

28. A tiled touch system according to claim 21 wherein said at least one computer is a plurality of computers coupled to said display, each computer being associated with a respective one of said display panels, each display panel presenting a different portion of said image in response to image data received from said associated computer.

29. A tiled touch system according to claim 25 wherein said at least one computer tracks pointer movements along said contact surface traversing borders between adjacent display panels.

30. A tiled touch system according to claim 29 wherein said at least one computer is a single computer coupled to said display.

31. A tiled touch system according to claim 29 wherein said at least one computer is a plurality of computers coupled to said display, each computer being associated with a respective one of said display panels, each display panel presenting a different portion of said image in response to image data received from said associated computer.

34. A tiled touch system according to claim 22 wherein said at least one processing unit executes an associated function in response to selection of one of said selectable icons.

37. A tiled touch system comprising:

a display on which a computer-generated image is presented, said display comprising an array of display panels, each display panel having an active display area on which a segment of said computer-generated image is presented, the display areas of adjacent display panels being physically separated by gaps, said gaps defining non-active display regions;

a digitizer disposed on said display and providing a generally continuous contact surface overlying both said active display areas and said non-active display regions corresponding to said gaps, the contact surface being mapped to both said active display areas and said non-active display regions, said digitizer comprising at least two imaging devices looking generally across said contact surface from different vantages and acquiring image frames to detect pointer contacts made on said contact surface over active display areas and on said contact surface over non-active display regions, said digitizer tracking pointer movements on and across the non-active display regions between adjacent display panels; and

at least one processing unit responsive to pointer data received from said digitizer and updating said computer-generated image in response to detected pointer contacts on said contact surface, wherein mapping of said contact surface to both said active display areas and non-active display regions corresponding to said gaps is performed during an orientation procedure, and wherein during said orientation procedure, said at least one processing unit updates the computer-generated image so that each display panel displays a plurality of orientation points.

38. A tiled touch system according to claim 37 wherein said image segments form portions of a generally continuous image presented on said display.

39. A tiled touch system according to claim 37 wherein each display panel is a high resolution display panel.

40. A tiled touch system according to claim 37 wherein said at least one processing unit tracks pointer movements along said contact surface traversing the non-active display regions corresponding to the gaps.

41. A tiled touch system according to claim 37 wherein said at least one processing unit recognizes pointer contacts on said contact surface beginning and/or ending at locations that are mapped to the non-active display regions corresponding to gaps as input command events.

42. A tiled touch system according to claim 37 further comprising selectable icons at locations that are mapped to the non-active display regions corresponding to the gaps.

43. A tiled touch system according to claim 37 wherein said digitizer comprises a generally transparent, rigid pane overlying said display and having an upper surface defining said contact surface.

44. A tiled touch system according to claim 37 wherein each display panel displays at least four orientation points.

45. A tiled touch system according to claim 39 wherein said display panels are liquid crystal displays.

46. A tiled touch system according to claim 40 wherein said at least one processing unit detects pointer contacts on said contact surface starting and/or stopping at locations that are mapped to the non-active display regions corresponding to the gaps as input command events.

47. A tiled touch system according to claim 41 wherein said at least one processing unit executes an associated function in response each recognized input command event.

48. A tiled touch system according to claim 42 wherein said at least one processing unit executes an associated function in response to selection of one of said selectable icons.