Optical storage apparatus with track seeking control system
US5768229A · kind A · utility
16Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08541
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low speed lens lock control unit detects an amount of an optical axial deviation of an objective lens from an offset of a tracking error signal which is obtained in a low speed seeking mode and drives a carriage actuator so as to set the optical axial deviation of the objective lens to zero. A high speed lens lock control unit detects an amount of an optical axial deviation of the objective lens from an offset of a tracking error signal which is obtained in a high speed seeking mode and drives a lens actuator so as to set the optical axial deviation of the objective lens to zero.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.