Overshoot minimizing tracking servo apparatus
US5148425A · kind A · utility
6Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08517
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tracking servo apparatus is disclosed which detects the change in the level of tracking error signal per unit time when the information reading spot passes a position on the track at its center in the converging period of the servo pull-in operation after a decelerating pulse has been generated and, when the amount of the detected change is over reference value, controls such that at least either one of the equalizer characteristic and the gain is changed for a predetermined period of time after the detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.