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Expired Canadian patentCanada

Image coding system

CA 2068751 C · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Shimada, Toshiaki; Murakami, Tokumichi

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An image coding system determines an amount a data that is output by a coder of the system and also determines a target code produced amount based on the motion of an input image. The coder of the coding system encodes the input image. A record of a data amount of past coded data is used as the inference of the target code amount. Hence, proper coding can be performed in a sending side. Further, by converting the data amount into a value with a condition to be standard, accuracy of the inference may be improved. In addition, an indication of the power amount of the data to be coded is used as a factor for determining a target code produced amount to expedite a combination of a plurality of …

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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 15, 1992 and granted May 19, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2014.
  • 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 15, 1992
GrantedMay 19, 1998
Term endedMay 15, 2012
Patent numberCA 2068751 C
Classification (IPC)G09G5/36 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedMay 15, 1992Patent grantedMay 19, 1998Term endedMay 15, 2012

Sources & verification

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