Apparatus and method for determining the programme to which a digital broadcast receiver is tuned
CA 2428064 A1 · Owner: Lu, Daozheng · Inventors: Lu, Daozheng; Deng, Keqiang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus identifies a program selected for reception on a monitored receiver. The monitored receiver has a receiver output and the selected , program is one of a plurality of receivable programs. The apparatus includes a tuner and demodulator arranged to receive a predetermine done of the programs. A first feature extractor extracts a first set of characteristic features from the receiver output. A second feature extractor extract a second set of characteristic features from the predetermined program. A comparator compares the first and the second sets of characteristic featurs. A code extractor extracts a program identifying code from the predetermined program if the first 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 July 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2023.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.