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Expired Canadian patentCanada

Method and system for compressing and decompressing digital color video statistically encoded data

CA 1322240 C · Owner: Music, John · Inventors: Music, John; Thomas, James L.; Smith, Gordon H.

CIPO record

Overview

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

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Abstract From the Canadian patent

The method and system for compressing and decompressing digital color video data utilizes a plurality of digitized signals representing combinations of run lengths and compressed color component codes and a look, up table of the digitally compressed color codes. The digitally compressed color component codes are decoded according to the look up table to form a table of the three digital color components for each run length and, the run lengths and corresponding color components are stored in an array in a buffer memory to represent the scan lines in a video picture frame.

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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 September 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 14, 2010.
  • 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 23, 1989
GrantedSeptember 14, 1993
Term endedSeptember 14, 2010
Patent numberCA 1322240 C
Classification (IPC)G06T9/00

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 23, 1989Patent grantedSep 14, 1993Term endedSep 14, 2010

Sources & verification

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