Method and apparatus to detect land/groove switch position...

Details Method and apparatus to detect land/groove switch position... Method and apparatus to detect land/groove switch position...

2011-05-31

2011-05-31

Agustin, Peter Vincent (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

07952964

ABSTRACT:
A land/groove switch position detecting method includes measuring information about a land/groove switch generation timing of a disc, using a first signal having a frequency that varies in proportion to a rotation speed of the disk in a normal playback mode, and a second signal having a predetermined frequency higher than the frequency of the first signal, and calculating a predicted land/groove switch generation position in the seek mode, using the information about the land/groove switch generation timing.

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