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Expired Canadian patentCanada

Image detection system

CA 2177023 C · Owner: Demetriou, Stamatios · Inventors: Donelly, Ross Alexander; Demetriou, Stamatios

CIPO record

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Abstract From the Canadian patent

An image detection system is disclosed for the detection of all image in an input pixel stream. An image is input as a input pixel stream (19) and accumulated and converted (112,113,114) into cells which are formed into cell data portions from regions of a corresponding image of the input pixel stream (19). A template storage ROM (15) stores at least one template that comprises a multiplicity of cell data entries derived from an desired image to be detected. A comparator matrix (115) is connected to the cell converter (112,113,114) and the template ROM (15) for comparing the cell data portions with a multiplicity of cell data entries to derive a template detection signal (215) when a …

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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 21, 1996 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2018.
  • 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 21, 1996
GrantedDecember 25, 2001
Term endedMay 21, 2016
Patent numberCA 2177023 C
Classification (IPC)G06K9/64 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedMay 21, 1996Patent grantedDec 25, 2001Term endedMay 21, 2016

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