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Expired Canadian patentCanada

Method and apparatus for sorting corner points in a visual image processing system

CA 1197595 A · Owner: General Electric Company · Inventors: Tomlinson, Harold W. Jr.; Beall, Donald L.

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Abstract From the Canadian patent

Method and apparatus is disclosed for, automatically processing visual images electronically so as to permit intelligent machine analysis of the image content. A special distributed logic system architecture facilitates rapid real time image analysis and the production of reaction control signals in a high speed production line environment for example. Dedicated decision logic is employed to determine in but a single micro-instruction cycle whether a detected corner point of the image should be linked to another already linked chain of such corner points so as to define part of a closed edge contour of the image under examination. This ability to so rapidly classify encoded corner points as …

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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 December 3, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1983
GrantedDecember 3, 1985
Term endedDecember 3, 2002
Patent numberCA 1197595 A
Classification (IPC)G06T9/20

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 31, 1983Patent grantedDec 3, 1985Term endedDec 3, 2002

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