Fm/fmx stereophonic receiver
CA 1287115 C · Owner: Ishikawa, Tsutomu · Inventors: Ishikawa, Tsutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An FMX stereophonic receiver for receiving an FMX stereophonic broadcast signal, which includes a stereo sum signal, a stereo difference signal and a compressed stereo difference signal, is disclosed. When multipath interference takes place, noise signal will be produced which, adversely affects on a level control of an added signal of the stereo difference signal and the compressed stereo difference signal. The disclosed receiver includes a detector for detecting the multipath noise signal contained in the FMX stereophonic broadcast signal. When the multipath noise signal is detected, FMX receiving mode is automatically changed to FM receiving mode by a selecting means so as to reduce the …
Read the whole patent
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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
- 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.