Control apparatus and optical disk apparatus

Details Control apparatus and optical disk apparatus Control apparatus and optical disk apparatus

2007-08-14

2007-08-14

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S053280, C369S044250

Reexamination Certificate

active

10358642

ABSTRACT:
A tracking control apparatus comprises an signal processing section, a lens characteristic measuring section and an optimum lens position searching section. The lens characteristic measuring section acquires a first address and second address of an optical disk. The lens characteristic measuring section successively generates offset set values so that the position of a converging lens is moved by an actuator at predetermined spatial intervals and counts the number of times both the first address and the second address are acquired. The optimum lens position searching section searches for a maximum value of the acquisition count and moves the converging lens using the actuator based on the offset set value when the acquisition count reaches a maximum value.

REFERENCES:
patent: 5878007 (1999-03-01), Matsumoto et al.
patent: 6240055 (2001-05-01), Takamine et al.
patent: 6345021 (2002-02-01), Belser et al.
patent: 6381201 (2002-04-01), Shihara et al.
patent: 7016272 (2006-03-01), Enokihara
patent: 2000-315327 (2000-11-01), None

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