Overshoot minimizing tracking servo apparatus

Details Overshoot minimizing tracking servo apparatus Overshoot minimizing tracking servo apparatus

1989-10-10

1992-09-15

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

G11B 2110, G11B 708

Patent

active

051484250

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.

REFERENCES:
patent: 4755977 (1988-07-01), Abed
patent: 4817069 (1989-03-01), Shigemori
patent: 4817073 (1989-03-01), Suzuki
patent: 4876679 (1989-10-01), Mukai
patent: 4890273 (1989-12-01), Takeuchi et al.
patent: 4975895 (1990-12-01), Yanagi

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