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Expired Canadian patentCanada

System for transmitting a digital video signal including time code signals

CA 2015614 C · Owner: Kani, Tetsuo · Inventors: Inoue, Takao; Kani, Tetsuo

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

In the transmission of digital video data signals for, example, in a digital video tape recorder a luminance signal and, first and second chrominance signals such as R-Y and B-Y, are, individually sampled to provide respective digital luminance data signals and first and second digital chrominance data signals for forming a high-definition video picture. Time code data signals representing the corresponding frame including the sampled signals are provided as individual sets of identical signals. The digital luminance data signals and the first and second digital chrominance data signals are divided into respective sets thereof which each consist of two successive data signals. The sets of …

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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 27, 1990 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2012.
  • 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 27, 1990
GrantedNovember 2, 1999
Term endedApril 27, 2010
Patent numberCA 2015614 C
Classification (IPC)H04N7/08 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedApril 27, 1990Patent grantedNov 2, 1999Term endedApril 27, 2010

Sources & verification

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