Program transmission system and method
CA 2015546 C · Owner: Sony Corporation · Inventors: Takano, Masayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a broadcast program transmission control apparatus and method using a scheduling computer to produce program scheduling signals representing a schedule of programs to be generated at predetermined times by respective ones of a plurality of program generation devices; each program generation device is provided with a corresponding controller into which the respective program scheduling signals are downloaded from the scheduling computer; and a switching device is operative to switch the programs generated by the program generation devices to a master broadcast output.
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
- Filed April 26, 1990 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2012.
- 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.