Focusing servo in an optical disk drive

Details Focusing servo in an optical disk drive Focusing servo in an optical disk drive

1994-02-04

1995-01-24

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4429, 369 32, G11B 700

Patent

active

053847628

ABSTRACT:
An optical disk drive includes a gain control for controlling the gain of a focus servo loop in response to the seek velocity of an optical head. At a low seek velocity, the focus servo gain is reduced to minimize the influence of beam scattering on the groove of an optical disk onto a focusing error signal (FES) and a tracking error signal (TES).

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