Tuner for receiving television signals in two different systems
CA 1313255 C · Owner: Satoh, Ken · Inventors: Satoh, Ken
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tuner for use in two systems utilizes a determining circuit. To determine whether or not a baseband signal, after demodulation includes a sound carrier. If a sound carrier is present, the determining circuit determines that the received television signal is a television signal in the NTSC system, or if a sound carrier is not present a, television signal in the MUSE system. When the received television signal is a television signal in the NTSC system switches are activated such that the baseband signal is applied to a signal processing circuit for video and a signal processing circuit for sound which are compatible with the NTSC system. An averaging AFC is selected by these switches. On …
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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 January 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 26, 2010.
- 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.