Control circuit of optical storage device and method thereof

Details Control circuit of optical storage device and method thereof Control circuit of optical storage device and method thereof

2008-05-20

2008-05-20

Ro, Bentsu (Department: 2837)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C318S621000, C369S044110, C369S053180

Reexamination Certificate

active

07376063

ABSTRACT:
A control circuit of an optical storage device includes a loop phase calculation unit for calculating a closed loop phase of a servo system according to at least one error signal of the servo system and a system control unit coupled to the loop phase calculation unit for generating an optimized control parameter according to the closed loop phase to perform compensation control, wherein the servo system comprises a tracking servo control system or a focusing servo control system, the compensation control is radial tilt control or focus balance adjustment, and the optimized control parameter is at least one optimized control parameter determined according to a plurality of closed loop phases calculated by the loop phase calculation unit.

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patent: 5663942 (1997-09-01), Ishibashi et al.
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patent: 6947359 (2005-09-01), Yokoyama et al.
patent: 2003/0147315 (2003-08-01), Iwazawa, et al.

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