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Methods and apparatus for context selection of block transform coefficients

CA 2326785 A1 · Owner: Yang, Kyeong Ho · Inventors: Faryar, Alireza Farid; Sen, Moushumi; Yang, Kyeong Ho

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Abstract From the Canadian patent

A method for use in a block transform-based coding system of processing (e.g. encoding and/or decoding) one or more block transform coefficients associated with at least, one block of visual data (e.g. an image and/or video sequence) comprises the following, steps. First, one or more previously reconstructed block transform coefficients associated, with the visual data are identified. Then a context selection value is , computed for use in processing a block transform coefficient associated with the at least one block, the context, selection value being based on the one or more previously reconstructed block transform, coefficients. The context selection value may be computed as a …

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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 November 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 22, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 22, 2000
GrantedNo grant recorded
Term endedNovember 22, 2020
Patent numberCA 2326785 A1
Classification (IPC)H04N7/30 +2 more

Timeline

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2001200320052007200920112013201520172019Application filedNov 22, 2000Term endedNov 22, 2020

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.