Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1983-04-29
1987-10-27
Faber, Alan
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369111, 250202, 360 77, G11B 7095
Patent
active
047034670
ABSTRACT:
A video signal play back device derives video signals from successive tracks formed as a continuous spiral on a video disc using a light source and a lens system, which is carried by a rotatable element at a predetermined spacing from the surface of the disc and which defines a folded optical path. The rotatable element translates the lens system in the radial direction relative to the disc for "coarse" steering of the light beam along the information tracks as the disc is rotated by a turntable. The optical path includes a mirror which is articulated for rotational motion about an axis which shifts the point of impingement of the transmitted light beam upon the disc in the radial direction. The returned beam is directed to a photosensitive pick-up which provides input signals to a circuit which generates a "fine" servo control signal to drive the articulated mirror.
REFERENCES:
patent: 2838683 (1958-06-01), Munro
patent: 3138669 (1964-06-01), Rabinow
patent: 3287563 (1966-11-01), Clunis
patent: 3314075 (1967-04-01), Becker
patent: 3363054 (1968-01-01), Mason
patent: 3381085 (1968-04-01), Johnson
patent: 3381086 (1968-04-01), Moss
patent: 3530258 (1970-09-01), Gregg
patent: 3534166 (1970-10-01), Korpel
patent: 3567855 (1971-03-01), Hamisch
patent: 3612642 (1971-10-01), Dostal
patent: 3638185 (1972-01-01), Dell
patent: 3654624 (1972-04-01), Becker
patent: 3657707 (1972-04-01), McFarland
patent: 3715524 (1973-02-01), Adler
patent: 3737877 (1973-06-01), Feinleib
patent: 3774172 (1973-11-01), Silverman
patent: 3798386 (1974-03-01), Dickopp
patent: 3860766 (1975-01-01), Mori
patent: 3876827 (1975-04-01), Janssen
patent: 3944727 (1976-03-01), Elliott
Laser recording unit by McFarland et al, Fall Joint Computer Conf., .COPYRGT.1968.
"An Experimental Television Recording and Playback System Using Photographic Discs", by Rice et al, pp. 997-1002; Nov., 1970, Journal of the SMPTE, vol. 79; 179-100.3V.
Discovision Associates
Faber Alan
LandOfFree
Video disc read back scanner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video disc read back scanner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video disc read back scanner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1276402