Touch system and method for determining pointer contacts on a touch surface
US6947032B2 · kind B2 · utility
83Cited by
18References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2003 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Feb 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0488
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for determining pointer contacts on a touch surface includes a touch surface to be contacted by a pointer. At least one imaging device having a field of view looks generally along the touch surface. At least one processor communicates with the at least one imaging device and analyzes images acquired by the at least one imaging device to detect the relative positions of a pointer and a reflection of the pointer therein and thereby determine if a pointer contact with the touch surface has been made.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.