System and method for adjusting tilt angle of light beam
US7729220B2 · kind B2 · utility
0Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Oct 23, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0945
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for adjusting a tilt angle of a light beam emitted by an optical pickup unit of an optical disc drive, the method includes steps of adjusting the tilt angle of the light beam according to test parameters preinstalled in the optical disc drive; detecting focusing error signals, the focusing error signals being generated based on the light beam reflected from an optical disc; generating current parameters based on the focusing error signals; storing the current parameters; adjusting the tilt angle of the light beam according to the current parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.