Method and apparatus for controlling spherical aberration...

Details Method and apparatus for controlling spherical aberration... Method and apparatus for controlling spherical aberration...

2008-05-12

2010-11-23

Pardo, Thuy N (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044140, C369S112200

Reexamination Certificate

active

07839734

ABSTRACT:
The invention provides a method for controlling spherical aberration correction for an optical disk drive. First, a collimator lens is moved to a first target position for spherical aberration correction. A driving time of motion of the collimator lens is then calculated. A prohibiting time is then determined according to the driving time. The collimator lens is then prevented from moving until the prohibiting time elapses.

REFERENCES:
patent: 6570827 (2003-05-01), Yamamoto et al.
patent: 7706227 (2010-04-01), Nishikawa
patent: 2005/0254394 (2005-11-01), Nishikawa
patent: 2005/0270925 (2005-12-01), Yamamoto et al.
patent: 2007/0268806 (2007-11-01), Yamasaki et al.
patent: 2008/0062391 (2008-03-01), Uchida et al.
patent: 2009/0059745 (2009-03-01), Kikuchi
patent: 10135675 (1998-05-01), None
English language translation of abstract of JP 10135675 (published May 22, 1998).

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