Motor drive circuit with reduced coil crosstalk in a feedback signal indicative of mirror motion in light scanning arrangements
US7126734B1 · kind B1 · utility
3Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Oct 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2207/1016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Crosstalk between a drive coil and a feedback coil is eliminated by a motor drive circuit operative for generating the drive coil as a square wave, and by removing the crosstalk which occurs at zero transitions of a feedback signal. The drive coil is used to oscillate a scan mirror employed in an image projection arrangement or an electro-optical reader.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.