Dynamic information storage or retrieval – With servo positioning of transducer assembly over track... – Optical servo system
Patent
1990-02-13
1991-01-29
Psitos, Aristotelis M.
Dynamic information storage or retrieval
With servo positioning of transducer assembly over track...
Optical servo system
369 4411, 369109, 369111, 3692754, 358342, G11B 709
Patent
active
049891936
ABSTRACT:
The present invention relates to systems for reproducing signals, from a record whose engraved surface contains a recorded track in the form of an embossed print made of diffractive elements, representing the time variation of a pulse time modulated waveform. In accordance with the invention, there is provided a record and an optical read-out device wherein the relief elements carried by the record have a width in the order of the wavelength of the concentrated read-out radiation for determining a spatial variation in the diffracted energy emerging from the illuminated portion of the record, this variation being detected with a photo-electric detector.
REFERENCES:
patent: 3121216 (1964-02-01), Wolfe et al.
patent: 3198880 (1965-08-01), Toulon
patent: 3228015 (1966-01-01), Miyata
patent: 3262122 (1966-07-01), Fleisher et al.
patent: 3283310 (1966-11-01), Hughes et al.
patent: 3287563 (1966-11-01), Clunis
patent: 3328776 (1967-06-01), Hughes et al.
patent: 3381086 (1968-04-01), DeMoss et al.
patent: 3391247 (1968-07-01), Frohbach
patent: 3423698 (1969-01-01), Wilson
patent: 3430966 (1969-03-01), Gregg
patent: 3530258 (1970-09-01), Gregg et al.
patent: 3534166 (1970-10-01), Korpel
patent: 3638185 (1972-01-01), Dell et al.
patent: 3654401 (1972-04-01), Dickopp et al.
patent: 3654624 (1972-04-01), Becker et al.
patent: 3665483 (1972-05-01), Becker et al.
patent: 3687664 (1972-08-01), Broadbent
patent: 3688025 (1972-08-01), Whittemore, Jr.
patent: 3715524 (1973-02-01), Adler
patent: 3798388 (1974-03-01), Dickopp
patent: 3829622 (1974-08-01), Elliott
patent: 3833769 (1974-09-01), Compaan et al.
patent: 3838401 (1974-09-01), Graf et al.
patent: 3855426 (1974-12-01), Bouwhuis
patent: 3956582 (1976-05-01), Bouwhuis
patent: 3999009 (1976-12-01), Bouwhuis
patent: 4041530 (1977-08-01), Kramer et al.
Electronics Review, "Philips TV Disk, Read by Light Beam, Could Shape Market", Sep. 1972.
Crovatto, "Sensing Holes and Marks", 4/71, IBM Technical Disclosure, vol. 13, No. 11.
Tolansky, "Revolution in Optics", 1968.
Hrbek, "An Experimental Optical Videodisk Playback System, Journal of the SMPTE", vol. 83, Jul. 1974, pp. 580-582.
"Thomson-CSF"
Psitos Aristotelis M.
Young W. R.
LandOfFree
Optical arrangement and a reading apparatus 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 arrangement and a reading apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical arrangement and a reading apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-819672