Optical disc device

Details Optical disc device Optical disc device

2011-08-16

2011-08-16

Bibbins, Latanya (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S112230

Reexamination Certificate

active

08000187

ABSTRACT:
An optical disc device includes: a first searching part which searches a condition where amplitude level of a TE signal is made maximum by changing either one of position of a movable lens and a focus balance value in a state where a focus servo control is performed based on a FE signal; an adjusting line setting part which sets an adjusting line that has an inclination α which is preliminarily stored in a memory portion and that passes the position of the movable lens and the focus balance value both of which are searched by the first searching part; and a second searching part which changes the position of the movable lens and the focus balance value to plural values on the adjusting line in a state where the focus servo control is performed consecutively to search a condition where the amplitude level of the tracking error signal is made maximum.

REFERENCES:
patent: 2008/0181088 (2008-07-01), Okamoto
patent: 2009/0122664 (2009-05-01), Ichihara
patent: 2006-134498 (2006-05-01), None
patent: 2007-265578 (2007-10-01), None

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