Optical disk recording/reproducing device utilizing a constant a

Details Optical disk recording/reproducing device utilizing a constant a Optical disk recording/reproducing device utilizing a constant a

1990-08-16

1993-01-26

Richardson, Robert L.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369133, 369240, 369 58, G11B 700

Patent

active

051827417

ABSTRACT:
An optical disk recording/reproducing device for recording or reproducing information on or from an optical disk while rotatively driving the optical disk at a constant angular velocity. The disk has pre-recorded information cyclically formed along a track so as to provide rotation control at a constant linear velocity. The device, which includes a clock generating circuit for generating a clock signal for recording or reproducing in accordance with a recording frequency of the pre-recorded information derived from signals reproduced by an optical head, is designed to perform recording or reproducing operations with a recording frequency according to the clock signal. The device further includes a magnetic filed control circuit and a recording light power control circuit whereby a magnetic field and light power to be applied to the optical disk is varied according to the recording frequency during recording operations.

REFERENCES:
patent: 4190860 (1980-02-01), Somers et al.
patent: 4228326 (1980-10-01), Dakin et al.
patent: 4761775 (1988-08-01), Murakami
patent: 4766502 (1988-08-01), Mashimo
patent: 4907216 (1990-03-01), Rijnsburger
patent: 4918677 (1990-04-01), Ashinuma et al.
patent: 5063552 (1991-11-01), Shigemori
Zukai Compact Disk Dokuhon (Illustrative Compact Disk Handbook) Date of Issue: The second edition Apr. 25, 1988.
The English Abstract of Japanese No. 63-222379; Sony Corp.
The Art of Digital Audio; John Watkinson; Jan. 1988; p. 1 and pp. 441 to 487.

Affiliated with

Also associated with

Rating

Optical disk recording/reproducing device utilizing a constant a 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 recording/reproducing device utilizing a constant a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk recording/reproducing device utilizing a constant a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1416974