Optical disk unit for recording or reproducing information

Details Optical disk unit for recording or reproducing information Optical disk unit for recording or reproducing information

2005-08-30

2005-08-30

Huber, Paul W. (Department: 2653)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S047500, C369S053230, C369S112230

Reexamination Certificate

active

06937544

ABSTRACT:
The present invention relates to an optical head device and an optical disk unit using the same. The optical head device includes a relay lens control unit to control at least one of lenses of a relay lens unit based on an output signal outputted from a first optical detector and a power control circuit to control an intensity of a light beam emits from a light source.

REFERENCES:
patent: 6172957 (2001-01-01), Ogasawara
patent: 6381208 (2002-04-01), Abe et al.
patent: 6771584 (2004-08-01), Yamanaka
patent: 0 537 904 (1993-04-01), None
patent: 0 549 488 (1993-06-01), None
patent: 2-304721 (1990-12-01), None
patent: 5-205282 (1993-08-01), None
patent: 6-203412 (1994-07-01), None
patent: 8-306078 (1996-11-01), None
patent: 9-50639 (1997-02-01), None
patent: 9-73666 (1997-03-01), None
patent: 10-269611 (1998-10-01), None
patent: 11-259906 (1999-09-01), None
patent: 2000-315323 (2000-11-01), None
Office Action (English-language translation attached), dated Mar. 30, 2004, from the Japanese Patent Office for Patent Application No. 2001-304571.
Japanese Office Action, dated Jun. 22, 2004 for Patent Application No. 2001-304571.

Affiliated with

Also associated with

Rating

Optical disk unit for recording or reproducing information does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disk unit for recording or reproducing information, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk unit for recording or reproducing information will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3471397