Balanced synchronous detector circuit
CA 1076220 A · Owner: Sony Corporation · Inventors: Ohsawa, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A balanced synchronous detector circuit for detecting the amplitude of a received signal and for detecting the phase difference between the received signal and a generated signal. A preferred application of this balanced synchronous detector circuit is in a stereo decoder of the type used for receiving and decoding a composite stereo signal. When so used the balanced synchronous detector circuit receives the pilot signal normally included in the composite stereo signal and also receives locally generated signals for the purpose of generating outputs proportional to the amplitude of the received pilot signal and proportional to the phase difference between the pilot signal and the locally …
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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 April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 1997.
- 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.