Wobble signal extraction circuit and optical disk device

Details Wobble signal extraction circuit and optical disk device Wobble signal extraction circuit and optical disk device

2008-01-08

2008-01-08

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S047280

Reexamination Certificate

active

07317667

ABSTRACT:
A wobble signal extraction circuit for extracting a wobble signal from a first optical disk signal containing a wobble signal component caused by a wobble formed on a surface of an optical disk and a second optical disk signal containing a wobble signal component of a reversed phase to that of the first optical disk signal, wherein signal level fixing sections (24a;and24b) fix the first and second optical disk signals to a predetermined level when a discontinuity of the wobble is detected.

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