Programme selection means in a programme transmission and reception system
CA 2228474 C · Owner: Fisk, Donald · Inventors: Fisk, Donald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multichoice programme transmission and reception system comprises a pluraliy of programme sources (1) coupled to a plurality of receivers (11) via a transmission path (3, 5, 7, 9). Further outputs (12) of the sources (1) supply identifications of the programmes they are currently transmitting to a processor (15). The processor (15) includes a database of the ratings users of the receivers (11) have previously given to various programmes and the , processor (15) uses these to estimate the order of preference which the user of each receiver (11) has for the programmes currently being transmitted. The processor (15) sends the corresponding order of the sources (1) to a data input …
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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 August 9, 1996 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2018.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.