Disk recording system and a method of controlling the rotation o

Details Disk recording system and a method of controlling the rotation o Disk recording system and a method of controlling the rotation o

1998-03-18

2000-01-04

Tran, Thang V.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

G11B 700

Patent

active

06011763&

ABSTRACT:
A method and apparatus are provided for controlling the rotation of a turntable relative to a recording head in a disk recording system. A first, voltage signal is generated corresponding to the radial displacement of the recording head relative to a turntable axis, and a second, frequency signal is generated corresponding to the rate of rotation of the turntable. A further voltage signal is then generated which represents the multiplication product of the radial displacement and the rate of rotation of the turntable based on the first and second signals. The rotation of the turntable is controlled in dependence on a difference between the multiplication product and a reference value.

REFERENCES:
patent: 3637161 (1972-01-01), Baur et al.
patent: 3763863 (1973-10-01), Mesek et al.
patent: 4087095 (1978-05-01), Koda
patent: 4120504 (1978-10-01), Brecht
patent: 4121837 (1978-10-01), Tominari et al.
patent: 4131284 (1978-12-01), Rangabe
patent: 4132414 (1979-01-01), Dinsdale
patent: 4154445 (1979-05-01), Joannou
patent: 4388713 (1983-06-01), Tatsuguchi
patent: 4394667 (1983-07-01), Cheng et al.
patent: 4586593 (1986-05-01), Danelson et al.
patent: 4680746 (1987-07-01), Senso
patent: 4691310 (1987-09-01), Wine
patent: 4922478 (1990-05-01), Verhagen
patent: 4985884 (1991-01-01), Watanabe et al.
patent: 5010540 (1991-04-01), Fuji et al.
patent: 5036508 (1991-07-01), Okano
patent: 5161142 (1992-11-01), Okano
patent: 5193084 (1993-03-01), Christiaens
patent: 5764609 (1998-06-01), Araki et al.
Patent Abstract of Japan, vol. 6, No. 51 (P-108) (929) Apr. 6, 1982 & JP,A,56 165 955 (Rocoh K.K.) Dec. 19, 1981.
Patent Abstracts of Japan, vol. 9, No. 329 (P-416) (2052) Dec. 24, 1985 & JP,a,60 154 356 (Hitachi Seisakusho K.K.) Aug. 14, 1985.

Affiliated with

Also associated with

Rating

Disk recording system and a method of controlling the rotation o does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disk recording system and a method of controlling the rotation o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disk recording system and a method of controlling the rotation o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1077951