Low power operation of an optical touch-sensitive device for detecting multitouch events
US9524060B2 · kind B2 · utility
3Cited by
52References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2013 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Mar 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04104
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device includes multiple emitters and detectors. Each emitter produces optical beams which are received by the detectors. Touch events disturb the optical beams. Detection schemes define the operation of the touch capability. Different detection schemes consume different amounts of power and may be used in combination to reduce overall power consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.