Detecting light to determine position of object
US7839384B2 · kind B2 · utility
1Cited by
6References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2005 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Sep 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Infrared light is emitted towards a surface. The infrared light is redirected by an object positioned on the surface. The infrared light as redirected by the objected is detected. A position of the object on the surface is determined based on the infrared light detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.