Motion encoder
US7183536B2 · kind B2 · utility
0Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Sep 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/363
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A motion encoder for use with a rotating key. The motion encoder allows the direction of rotation to be determined by providing elements having different characteristics for the transmission of a IR beam. These elements are arranged in a pattern that allows an IR beam impinging on the elements to trace a path detected as the rotating key turns. The beam being detected after changes in the reflected or transmitted beam indicating the direction of rotation of the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.