Closed-loop control system and servo device of optical disk unit

Details Closed-loop control system and servo device of optical disk unit Closed-loop control system and servo device of optical disk unit

1995-02-08

1996-05-28

Hindi, Nabil Z.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4425, 369 4429, G11B 700

Patent

active

055218920

ABSTRACT:
In a closed-loop control system and a servo device of an optical disk unit, a loop gain can be suitably corrected by a simplified structure. A signal is added to a closed loop and a value having a correlation with a gain of the closed loop is measured in accordance with the added signal. The loop gain is changed such that the measured value is equal to a predetermined value. Therefore, it is possible to suitably correct the loop gain.

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