Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Reexamination Certificate
2005-01-18
2005-01-18
Tran, Thang V. (Department: 2653)
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
C369S044290, C369S044250
Reexamination Certificate
active
06845068
ABSTRACT:
In a focus control for following a focus position of light beam to be radiated to an optical disk to an optical disk surface, the technique is for shorten the memory length in the learning controller. The learning controller is provided to a focus feedback control system and updates the memory comprised of N numbers of memory cells with a shorter sample period than a time obtained by dividing the time required for one rotation of the disk by N numbers and outputs the learning results in the memory with the shorter sample period.
REFERENCES:
patent: 6628576 (2003-09-01), Watanabe et al.
patent: 6628579 (2003-09-01), Watanabe et al.
patent: 6721247 (2004-04-01), Watanabe
patent: 6724695 (2004-04-01), Kumagami et al.
patent: 6-301996 (1994-10-01), None
patent: 7-302426 (1995-11-01), None
patent: 8-077589 (1996-03-01), None
patent: 8-235621 (1996-09-01), None
patent: 9-320070 (1997-12-01), None
patent: 10-021571 (1998-01-01), None
patent: 10-241170 (1998-09-01), None
patent: 11-086309 (1999-03-01), None
patent: 2000-155953 (2000-06-01), None
patent: 2000-339729 (2000-12-01), None
Greer Burns & Crain Ltd.
Tran Thang V.
LandOfFree
Optical disk apparatus and focus control method thereof 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 apparatus and focus control method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk apparatus and focus control method thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3433972