Optical disk apparatus and method capable of compensating...

Details Optical disk apparatus and method capable of compensating... Optical disk apparatus and method capable of compensating...

2006-09-12

2006-09-12

Dinh, Tan (Department: 2627)

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

C369S053290

Reexamination Certificate

active

07106666

ABSTRACT:
During a normal operation, a tracking control signal from a tracking controller is supplied to an adder via a first switch and to a radial deviation component detector. The radial deviation component detector determines a radial deviation component EC of AC caused by radial deviation of an optical disk from the tracking control signal and supplied that component to the adder via another switch. For a track jump, the first switch is turned OFF, cutting off the tracking control signal. Thus, the radial deviation component EC and a jump pulse signal from a jump signal generator are added together by the adder. However, an offset of the tracking control signal TC detected by a DC component detector is further added. To avoid instability, the track jump is compensated so as to be normally carried out even if a DC offset is added to a tracking control signal.

REFERENCES:
patent: 5742568 (1998-04-01), Nakano et al.
patent: 8-161840 (1998-06-01), None
patent: 2000-20967 (2000-01-01), None

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