Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1990-08-02
1992-03-03
Envall, Jr., Roy N.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369189, 369280, 358342, G11B 509, G11B 1552, G11B 2010, G11B 2722
Patent
active
050938207
ABSTRACT:
An optical disk recording/reproducing device in accordance with the present invention has a controller that, during recording, performs the rotation control of the optical disk in Constant Linear Velocity according to reproduced signals of pre-recorded information that was pre-recorded on the optical disk, during reproduction, performs the rotation control according to reproduced signals of recorded information, and when the rotation control based on the reproduced signals of the recorded information is infeasible, switches the rotation control and performs the rotation control based on the reproduced signals of the pre-recorded information during reproduction also. As a result, a suitable and appropriate CLV control may be executed during recording and during reproduction.
REFERENCES:
patent: 4439849 (1984-03-01), Nabeshima
patent: 4530083 (1985-07-01), Ishihara
patent: 4757488 (1988-07-01), Nagai
patent: 4866695 (1989-09-01), Suzuki
patent: 4896221 (1990-01-01), Mashimo
"Zukai Compact Disk Dokuhon" (Illustrative Compact Disk Handbook) 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; pp. 1 and 441 to 487.
Deguchi Toshihisa
Fuji Hiroshi
Maeda Shigemi
Terashima Shigeo
Chevalier R.
Envall Jr. Roy N.
Sharp Kabushiki Kaisha
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