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Expired Canadian patentCanada

Image processing apparatus and method of same

CA 2298081 C · Owner: Sony Corporation · Inventors: Kurose, Yoshikazu

CIPO record

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Abstract From the Canadian patent

An image processing apparatus which can perform a variety of graphic processing using a video signal obtained by an image pickup apparatus. A system comprising a DDA set-up circuit for generating first image data and first z-data a triangle circuit, a texture engine circuit and a memory I/F circuit for writing the first image data and the first z-data respectively in a display buffer memory and a z-buffer memory and for writing the second image data and the second z-data respectively to the display buffer memory and the z-buffer memory when second image data corresponding to image pickup results of an image pickup apparatus and second z-data corresponding to the second image data are input …

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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 February 3, 2000 and granted November 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 3, 2000
GrantedNovember 15, 2011
Term endedFebruary 3, 2020
Patent numberCA 2298081 C
Classification (IPC)G06T15/00 +1 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedFeb 3, 2000Patent grantedNov 15, 2011Term endedFeb 3, 2020

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