Optical disc reproducing apparatus and tracking servo...

Details Optical disc reproducing apparatus and tracking servo... Optical disc reproducing apparatus and tracking servo...

2006-01-31

2006-01-31

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044370, C369S044290, C369S044350

Reexamination Certificate

active

06992955

ABSTRACT:
At a timing when a spot M of a main beam enters a defective area N of an optical disc, the tracking servo control is stopped, and the position the spot M of the main beam is held to the current position with respect to a radial direction of the optical disc, and, after a spot S2of a rear sub-beam then exits the defective area N, the tracking servo control is resumed.

REFERENCES:
patent: 6819638 (2004-11-01), Sakamoto et al.
patent: 8-55351 (1996-02-01), None

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