Codec mode decoding using a priori knowledge
CA 2341879 C · Owner: Bruhn, Stefan · Inventors: Bruhn, Stefan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communication system supports multiple source coding/channel coding schemes. A mode indicator can be transmitted with payload data to inform the receiver of the particular scheme currently being employed. The mode indicator may be encoded using a relatively weak channel coding to minimize extraneous overhead transmissions. To enhance the likelihood of successfully decoding the mode indicator, which has information that is highly important in successfully decoding the payload data, various value likelihood parameters can be calculated and combined to identify a most likely mode. Included in the likelihood (soft) parameters is one parameter which can be calculated based on a model …
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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 27, 1999 and granted October 9, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2021.
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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.