Apparatus and method for tracking control

Details Apparatus and method for tracking control Apparatus and method for tracking control

2007-12-11

2007-12-11

Korzuch, William R. (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044360

Reexamination Certificate

active

10664719

ABSTRACT:
A tracking controller includes a tracking error detecting section and a tracking control section. The tracking error detecting section generates and outputs a tracking error signal that represents how much the focal point of a light beam has shifted from a target track on a storage medium. The tracking control section generates a drive signal in response to the tracking error signal so as to move the light beam such that the focal point of the light beam is located right on the target track. The gain of at least one of the tracking error signal and the drive signal is switched depending on whether or not the focal point of the light beam is located on a recorded area of the storage medium on which data has already been written.

REFERENCES:
patent: 4700334 (1987-10-01), Shinkai
patent: 4890273 (1989-12-01), Takeuchi et al.
patent: 5175719 (1992-12-01), Iimura
patent: 5442609 (1995-08-01), Yanagawa
patent: 5526329 (1996-06-01), Bish et al.
patent: 5559770 (1996-09-01), Hiroki et al.
patent: 6556525 (2003-04-01), Takiguchi
patent: 6704263 (2004-03-01), Nijboer et al.
patent: 2002/0105865 (2002-08-01), Kusumoto et al.
patent: 2002/0150005 (2002-10-01), Nishiuchi
patent: 60-138740 (1985-07-01), None
patent: 04-061034 (1992-02-01), None
patent: 06-333248 (1994-12-01), None

Affiliated with

Also associated with

Rating

Apparatus and method for tracking control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for tracking control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for tracking control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3876414