Methods and apparatus to extract codes from a plurality of channels
CA 2542151 C · Owner: Nelson, Daniel · Inventors: Nelson, Daniel; Schwerer, Ronald G.; Wright, David H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and apparatus to extract audio codes are disclosed. An example method includes receiving signals on a plurality of channels (101-104) and ranking the signals based on at least one characteristic of the signals via a signal ranker (108). A first channel from the plurality of channels is selected based upon the ranking of the signals via a channel selector (110). The example method further include determining whether a first signal on the first channel includes at least one code and extracting the at least one code from the first signal when the first signal includes the at least one code.
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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 October 7, 2003 and granted March 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2025.
- 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.