T.v. receiver with selection of broadcast or external video signal
CA 1084157 A · Owner: Sony Corporation · Inventors: Hosoya, Mitsuru; Iida, Mikio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A television receiver for reproducing a picture of a television signal or an external video signal selectively, having, a television tuner using a signal controlled reactance device as a tuning element, a video detector coupled to said television tuner and producing a television video signal at a television video signal output terminal, a channel selector having a plurality of channel selecting switches and supplying a tuning signal corresponding to a selected channel to said signal controlled reactance device of said television tuner, an external video signal input terminal, a gate circuit selecting one video signal from said television video signal input terminal or said external video …
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 August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 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.