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Expired Canadian patentCanada

Digital color television system

CA 1084155 A · Owner: Jacobs, Eli S. · Inventors: Russell, James T.

CIPO record

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

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Abstract From the Canadian patent

A digital color television system is described in which only one chrominance component of the video color television signal is transmitted for each television line, and digital delay means is employed for delaying at least one of the two chrominance components I and Q of the color television signal so that the delayed chrominance component can be added to the transmitted television signal to produce output signals having both chrominance components. The system includes a recording apparatus for recording the digital color television signal on a record which may be an optical or magnetic record, and a playback apparatus for playing back the recorded signal to a television receiver or other …

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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 August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 18, 1979
GrantedAugust 19, 1980
Term endedAugust 19, 1997
Patent numberCA 1084155 A
Classification (IPC)H04N5/76

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Application filedDec 18, 1979Patent grantedAug 19, 1980Term endedAug 19, 1997

Sources & verification

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