Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input region
US8576172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2011 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Nov 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0428
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch system comprises overlapping coordinate input sub-regions defining a generally contiguous input surface. Each coordinate input sub-region generates pointer coordinate data in response to pointer contacts thereon. When a pointer contact is made on a region of a coordinate input sub-region that overlaps with an adjacent coordinate input sub-region, each overlapping coordinate input sub-region processes acquired images to derive pointer data and triangulates the position of the pointer using the derived pointer data. Thereafter, the triangulated positions generated by the overlapping coordinate input sub-regions are processed in accordance with defined logic thereby to determine the position of the pointer contact relative to the touch surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.