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Expired Canadian patentCanada

Data transfer method, display driving circuit using the method, and image display apparatus

CA 2174903 C · Owner: Mizutome, Atsushi · Inventors: Ina, Kenzo; Mizutome, Atsushi; Murayama, Kazuhiko

CIPO record

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Abstract From the Canadian patent

A data transfer method for transferring data to an information-side driver for driving a display apparatus is provided. Wherein driver circuits each comprises a chip address/video data discrimination circuit and a unit driver are mounted around said display apparatus. A unique chip address is set for each of the unit drivers by means of a hardware pattern. And data exchange with the driver circuits is performed so that chip address information and video data information are time-divisionally transferred to the target unit driver using a chip address/video data common bus line and a chip address/video data discrimination control signal.

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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 April 24, 1996 and granted September 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 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.
FiledApril 24, 1996
GrantedSeptember 10, 2002
Term endedApril 24, 2016
Patent numberCA 2174903 C
Classification (IPC)G09G5/00 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedApril 24, 1996Patent grantedSep 10, 2002Term endedApril 24, 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.