Record/reproduce apparatus having means for switching automatically between different types of audio processing
CA 2019081 C · Owner: Shirochi, Yoshiki · Inventors: Shirochi, Yoshiki; Takaoka, Hirokazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus is provided for recording and reproducing video and audio signals on a record medium wherein the audio, signal may be of at least two different types subjected to respectively different types of audio processing. A recording section produces frequency modulated audio signal components and selectively adjusts the level of at least one FM audio signal component during the video blanking intervals as a function of the type of audio signal being modulated. Then the FM audio, signal components and the video signal are combined and recorded. A reproducing section separates the reproduced FM audio signal components from the reproduced video signal and detects the level of at least one …
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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
- Filed June 15, 1990 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2012.
- 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.