Tiled touch system

• US 20050259084A1
• Filed: 05/21/2004
• Published: 11/24/2005
• 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
• Granted Patent: US 8,120,596 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• 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 image being formed of an array of image segments; and

a digitizer mapped to said display and sensing pointer contacts made thereon.

2. A tiled touch system according to claim 1 wherein each image segment is mapped to a corresponding segment of the active area of said digitizer.

3. A tiled touch system according to claim 2 further comprising at least one processing unit responsive to said digitizer and updating said computer-generated image in response to sensed contacts on said display.

4. A tiled touch system according to claim 3 wherein said image segments form portions of a generally continuous image presented over said display surface.

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

6. A tiled touch system according to claim 3 wherein said display is constituted by an array of display panels each presenting one of said image segments.

7. A tiled touch system according to claims 6 wherein each display panel is of a high resolution.

8. A tiled touch system according to claim 7 wherein said display panels are liquid crystal displays.

9. A tiled touch system according to claim 3 wherein each image segment is projected onto an associated portion of said display by a projector.

10. A tiled touch system according to claim 9 wherein adjacent project image segments overlap.

11. A tiled touch system according to claim 6 further including gaps between said display panels.

12. A tiled touch system according to claim 11 wherein mapping of each image segment to a corresponding segment of the active area of said digitizer is performed during an orientation procedure.

13. A tiled touch system according to claim 12 wherein said at least one processing unit tracks pointer movements traversing gaps between adjacent display panels.

14. A tiled system according to claim 13 wherein said at least one processing unit detects pointer contacts starting and/or stopping at locations corresponding to gaps between adjacent display panels.