Dynamic information storage or retrieval – Storage medium structure – Optical track structure
Patent
1989-05-23
1990-10-02
Canney, Vincent P.
Dynamic information storage or retrieval
Storage medium structure
Optical track structure
369109, 369111, 369 4441, 358342, G11B 724, G11B 709
Patent
active
049611836
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 photo-electric elements.
REFERENCES:
patent: 3198880 (1965-08-01), Toulon
patent: 3228015 (1966-01-01), Miyata
patent: 3287563 (1966-11-01), Clunis
patent: 3530258 (1970-09-01), Gregg et al.
patent: 3534166 (1970-10-01), Korpel
patent: 3654401 (1972-04-01), Dickopp 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), Elliot
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.
patent: 4868808 (1989-09-01), Tinet
Hrbek, G. W., "An Experimental Optical Videodisk Playback System", Journal of the SMPTE, vol. 83, Jul. 1974, pp. 580-582.
Crovatto, "Sensing Holes and Marks", 4/71, IBM Technical Disclosure, vol. 13, No. 11.
Tolansky, "Revolution in Optics", 1968.
Electronics Review, "Philips TV Disk, Read by Light Beam, Could Shape Market", Sep. 72.
"Thomson-CSF"
Canney Vincent P.
Young W. R.
LandOfFree
Optical disk arrangement with closed contours whose entire exten 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 arrangement with closed contours whose entire exten, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk arrangement with closed contours whose entire exten will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-296114