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Expired Canadian patentCanada

Parallel rendering of smoothly shaded color triangles with anti-aliased edges for a three dimensional color display

CA 1309198 C · Owner: Evangelisti, Carlo J. · Inventors: Pavicic, Mark J.; Lumelsky, Leon; Evangelisti, Carlo J.

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Abstract From the Canadian patent

Abstract of the Disclosure The present invention comprises a method for utilizing an SIMD computer architecture in conjunction with a host processor and coordinate processor to render quality, three-dimensional, anti-aliased shaded color images into the frame buffer of a video display system. The method includes a parallel algorithm for rendering an important graphic primitive for accomplishing the production of a smoothly shaded color three-dimensional triangle with anti-aliased edges. By taking advantage of the SIMD architecture and said parallel algorithm the very, time consuming pixel by pixel computations are broken down for parallel execution. A single coordinate processor computes …

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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 October 20, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 20, 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.
FiledSeptember 16, 1988
GrantedOctober 20, 1992
Term endedOctober 20, 2009
Patent numberCA 1309198 C
Classification (IPC)G06T15/50

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 16, 1988Patent grantedOct 20, 1992Term endedOct 20, 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.