System for the simultaneous coding a number of television signals and for decoding thereof in radiofrequency
CA 2079514 A1 · Owner: Diez Follente, Emilio · Inventors: Diez Follente, Emilio; Fernandez Vinuesa, Jesus Javier; Carmona Garcia, Jose Luis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for the simultaneous coding of a number of television signals and for decoding thereof in radiofrequency. The radiofrequency TV signal or signals to be distributed undergo remodulation on at least one channel by a signal which does not alter the synchronism pedestal and which varies in accordance with an established sequence resident in the memory of the coder, offering differentiated application to each individual channel or to the whole range thereof. A data channel is also installed to include a channel identification code, an algorithmic code and a synchronisation code these, being the determinants for interpretation of the codes by a decoder at the subscriber's terminal and …
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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 September 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2014.
- 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
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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.