Optical disk apparatus and an optical disk recording and...

Details Optical disk apparatus and an optical disk recording and... Optical disk apparatus and an optical disk recording and...

2008-04-29

2008-04-29

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044350

Reexamination Certificate

active

07366065

ABSTRACT:
An optical disk apparatus and an optical disk recording and reproducing method are provided in which an actuator can be controlled in stable fashion at the time of high-speed recording operation. Before performing the high-speed recording operation under servo control of average type, the learning of a servo signal of average type by application of a disturbance signal is carried out for both the servo control of continuous servo type for reproduction and the servo control of sample-and-hold type for low-speed recording operation. Based on the result of the learning, the gain is set for a servo loop of average servo type for high-speed recording operation.

REFERENCES:
patent: 5757748 (1998-05-01), Kiyoura et al.
patent: 6798606 (2004-09-01), Tang et al.
patent: 7046600 (2006-05-01), Matsumoto
patent: 7088665 (2006-08-01), Ogawa et al.
patent: 7215606 (2007-05-01), Yonezawa
patent: 2003-051128 (2003-02-01), None
patent: 2003-099925 (2003-04-01), None
patent: 2003-157554 (2003-05-01), None

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