Optical disc apparatus

Details Optical disc apparatus Optical disc apparatus

2011-03-22

2011-03-22

Tran, Thang V (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S112170

Reexamination Certificate

active

07911889

ABSTRACT:
An optical disc apparatus includes a laser diode, a first optical component which branches beams from the laser diode into a first beam and a second beam, an objective lens which focuses the first beam on an optical information recording medium, an actuator which drives the objective lens in an optical axis direction, a reference mirror provided in an optical path of the second beam, an optical path length varying unit which varies an optical path length of the second beam, a first photo detector, a second photo detector, a second optical component which branches beams obtained by combining the first beam which is reflected by the optical information recording medium and the second beam which is reflected by the reference mirror and which makes the branched beams incident on the first and second photo detectors, and a signal processing part.

REFERENCES:
patent: 5115420 (1992-05-01), Finkelstein et al.
patent: 5745265 (1998-04-01), Hasegawa et al.
patent: 5856960 (1999-01-01), Hwangbo et al.
patent: 5859819 (1999-01-01), Miyabe et al.
patent: 6181666 (2001-01-01), Miyazaki et al.
patent: 6567366 (2003-05-01), Kim et al.
patent: 7177260 (2007-02-01), Kim et al.
patent: 2001/0030861 (2001-10-01), Oda et al.
patent: 2003/0185137 (2003-10-01), Horinouchi et al.
patent: 2007/0165510 (2007-07-01), Yamamoto
patent: 0 438 042 (1991-07-01), None
patent: 0 572 981 (1993-12-01), None
patent: 05-135419 (1993-06-01), None
patent: 05-342678 (1993-12-01), None
patent: 06-162552 (1994-06-01), None
patent: 06-223433 (1994-08-01), None

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