Information recording/reproducing apparatus
US5090001A · kind A · utility
27Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1989 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Jun 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/0953
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording/reproducing apparatus includes an optical head for projecting a light spot onto an optical disk, a fine actuator for causing a light spot to track a track of the optical disk, a coarse actuator for moving the light spot over a recording region of the optical disk, a movement detector for detecting a moving distance of the fine actuator and outputting a detection signal, and a driving circuit for adding the output signal from the movement detector and a drive signal for driving the fine actuator and forming a drive signal for driving the coarse actuator on the basis of the sum signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.