Optical disc drive

Details Optical disc drive Optical disc drive

2005-02-08

2005-02-08

Hindi, Nabil (Department: 2655)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044260, C369S053280

Reexamination Certificate

active

06853609

ABSTRACT:
The present invention relates to loop gain adjustment of a focus/tracking servo in an optical disk apparatus, and provides an optical disk apparatus which can make the loop gain adjustment converge normally even in an optical disk in which prerecorded areas and recorded areas are mixed, and further which always has a stable servo system even when a gain is significantly varied due to changes in the disk state.When an inserted optical disk is determined to be a recordable optical disk by an optical disk type determination means22, an optical pickup1is made seek a previously set area, thereby performing the loop gain adjustment. Further, when a gain is varied during the operation, a gain adjusting means10changes over a gain adjustment value.

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