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Expired Canadian patentCanada

Image predictive coding apparatus and method, image predictive decoding apparatus and method and recording medium

CA 2228166 C · Owner: Panasonic Corporation · Inventors: Tan, Thiow Keng; Boon, Choong Seng; Shen, Sheng Mei

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Abstract From the Canadian patent

The present invention is directed to an image predictive coding apparatus and method image predictive, decoding apparatus method and recording medium which stores therein the image predictive coding method or the image predictive decoding method, of which the transform efficiency is remarkably improved in comparison with known prior art. According to the above image predictive coding apparatus and method, when dividing inputted image data to be coded into image data of a plurality of small regions which are adjacent to each other and coding the image data of an objective small region to be processed among the image data of the plurality of divided small regions which are adjacent to each …

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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 May 28, 1997 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 28, 1997
GrantedApril 30, 2002
Term endedMay 28, 2017
Patent numberCA 2228166 C
Classification (IPC)G06T9/00

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1998200020022004200620082010201220142016Application filedMay 28, 1997Patent grantedApril 30, 2002Term endedMay 28, 2017

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