Helical scanning type recording/reproducing apparatus
CA 1209252 A · Owner: Sony Corporation · Inventors: Takahashi, Takao; Shimada, Keiichiro; Moriwaki, Hisayoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for recording and reproducing an information signal comprised of a video signal and two channels of audio signals from an audio signal source in a plurality of successive tracks on a record medium each track, being divided into at least two sections comprising circuitry, for generating the two channels of audio signal from the output of the audio signal source; an A/D for converting the audio signals into digital form; a compressor for compressing the digitized audio signal; first recorder for recording the compressed digitized audio signal in the plurality of successive tracks such that one field interval of the video signal is recorded in at least one of the sections of each …
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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 August 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.