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Expired Canadian patentCanada

Method and apparatus for motion vector prediction in temporal video compression

CA 2574590 C · Owner: Shi, Fang · Inventors: Raveendran, Vijayalakshmi R.; Oguz, Seyfullah; Shi, Fang

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Abstract From the Canadian patent

A method for motion vector prediction for a current block the current block , having a set of neighboring blocks that includes blocks that do not have an associated motion vector, is disclosed. The method including deriving a candidate motion vector for each block in the set of neighboring blocks that does not have an associated motion vector; and using the candidate motion vector for each block in the set of neighboring blocks that does not have the associated motion vector to predict a current motion vector for the current block. An apparatus for performing the method is also disclosed.

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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 20, 2005 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 20, 2005
GrantedFebruary 19, 2013
Term endedJuly 20, 2025
Patent numberCA 2574590 C
Classification (IPC)H04N19/13 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJuly 20, 2005Patent grantedFeb 19, 2013Term endedJuly 20, 2025

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