Tracking servo system for an information recording disc player
US4817073A · kind A · utility
29Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Jun 4, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S358/907
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tracking servo system for use in an information recording disc player including an equalizing circuit for compensating a frequency characteristic of a tracking error signal generated at a pickup of the disc player. The equalizing characteristic of the equalizing circuit is changed for a predetermined time period after the servo loop is closed during a track jump operation of the disc player. By this feature the servo loop is locked in when a decelerating force is exerted on the actuator of the tracking servo system, thereby to increase the stability of the lock in of the tracking servo system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.