Wobble detection circuit corresponding to a plurality of...

Details Wobble detection circuit corresponding to a plurality of... Wobble detection circuit corresponding to a plurality of...

2006-05-16

2006-05-16

Tran, Thang V. (Department: 2653)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S047250, C369S059150

Reexamination Certificate

active

07046615

ABSTRACT:
A wobble detection circuit detects a signal by a common photodetector (light receiving) element from several kinds of media having different pre-formats. Further, the wobble detection circuit changes a gain for amplifying the signal in a wobble signal detection process depending on the pre-format of a reproducing or recording medium to obtain a wobble signal.

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