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Expired Canadian patentCanada

Motion vector coding method and motion vector decoding method

CA 2438295 C · Owner: Hagai, Makoto · Inventors: Kondo, Satoshi; Hagai, Makoto; Kadono, Shinya

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Abstract From the Canadian patent

A motion vector coding unit 117 executes processing including a neighboring block specification step (S100) of specifying a neighboring block which is located in the neighborhood of a current block; a judgment step (Steps S102 S104) of judging , whether or not the neighboring block has been coded using a motion vector of another block; a prediction step (S106 S108) of , deriving a predictive motion vector of the current block using a motion vector calculated from the motion vector of the other block as a motion vector of the neighboring block; and a coding step (S110) of coding the motion vector of the current block using the predictive motion vector.

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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 January 8, 2003 and granted September 25, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 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.
FiledJanuary 8, 2003
GrantedSeptember 25, 2012
Term endedJanuary 8, 2023
Patent numberCA 2438295 C
Classification (IPC)H04N19/52

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2004200620082010201220142016201820202022Application filedJan 8, 2003Patent grantedSep 25, 2012Term endedJan 8, 2023

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