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Expired Canadian patentCanada

Image processing apparatus

CA 1306296 C · Owner: Asada, Haruo · Inventors: Tsujimoto, Shuichi; Asada, Haruo

CIPO record

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

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Abstract From the Canadian patent

An image processing apparatus comprises an input image memory for storing input image data obtained by coding original image data with run length codes for a first direction, a reading circuit for sequentially reading from the input image memory the data of every two lines which are adjacent to each other in a second direction orthogonal to the first direction, an exclusive OR processing circuit for carrying out an exclusive OR operation on the data of the every two lines read by the reading circuit to detect second directional endpoint positions of the original image data without decoding the input image data into the original image data, and a second directional processing circuit for …

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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

  • Granted August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
  • 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 11, 1988
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306296 C
Classification (IPC)H04N1/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJuly 11, 1988Patent grantedAug 11, 1992Term endedAug 11, 2009

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