Directional input device with a light directing shaft
US7544924B2 · kind B2 · utility
1Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2006 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Jun 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A directional input device with a light directing shaft that avoids wear and tear caused by physical contact between a shaft and a sensor surface. A directional input device according to the present teachings includes a light emitter and a shaft having a surface that reflects light from the light emitter. A directional input device according to the present teachings further includes a set of light sensing elements that are positioned to detect a position of the shaft by sensing light reflected from the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.