Apparatus and method for storing information on and retrieving information from a videodisc
CA 1055157 A · Owner: Mca Disco-Vision · Inventors: Winslow, John S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to reading while writing on an information storage videodisc. Prior art techniques of recording on videodiscs have involved processing procedures producing recorded intelligence information on a disc directly from a corresponding intelligence signal in amplitude varying with time format. Such procedures have definite limitations as to the quality of the reproduced signal. Additionally it has previously not been possible to instantaneously read and check the recorded signal. In accordance with the present invention, a writing system includes an apparatus for recording information on a videodisc having a light responsive coating covering the videodisc substrate …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.