Optical seeking apparatus with track crossing signal generation

Details Optical seeking apparatus with track crossing signal generation Optical seeking apparatus with track crossing signal generation

1995-06-07

1997-08-19

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4434, 369 54, G11B 709

Patent

active

056595263

ABSTRACT:
An apparatus for moving an optical head from an initial track to a target track on a storage medium and generating a track crossing signal is disclosed. The apparatus comprises a sensor for measuring the reflectivity level from a storage medium, a preamplifier for generating a data signal, a tracking error signal generator responsive to the reflectivity level for deriving a tracking error signal, a track/hold selector to direct the tracking error signal generator to generate a corrected tracking error signal of a constant amplitude for a predetermined period of time based on the data signal, and a track crossing signal generator based on the corrected tracking error signal for deriving a track crossing signal indicating the crossing of an information track by the optical head.

REFERENCES:
patent: Re32574 (1988-01-01), Ceshkovsky et al.
patent: 4375091 (1983-02-01), Dakin et al.
patent: 4536863 (1985-08-01), Giddings
patent: 4701898 (1987-10-01), Giddings
patent: 4774699 (1988-09-01), Giddings
patent: 4845697 (1989-07-01), Giddings
patent: 5146440 (1992-09-01), Yamaguchi et al.
patent: 5191566 (1993-03-01), Yamaguchi et al.
patent: 5311490 (1994-05-01), Matoba et al.
patent: 5459705 (1995-10-01), Matoba et al.

Affiliated with

Also associated with

Rating

Optical seeking apparatus with track crossing signal generation 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 seeking apparatus with track crossing signal generation , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical seeking apparatus with track crossing signal generation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1110004