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Expired Canadian patentCanada

Special effects apparatus

CA 1312373 C · Owner: Chaplin, Daniel J. · Inventors: Chaplin, Daniel J.

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

Video special effects apparatus comprises both an analog pattern generator and a digital pattern generator. The analog control signal generated by the analog pattern generator and the digital control signal generated by the digital pattern generator are combined to provide a hybrid control signal, and the hybrid control signal is used to control the wipe between two video signals.

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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 January 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 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.
FiledFebruary 29, 1988
GrantedJanuary 5, 1993
Term endedJanuary 5, 2010
Patent numberCA 1312373 C
Classification (IPC)H04N5/26 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedFeb 29, 1988Patent grantedJan 5, 1993Term endedJan 5, 2010

Sources & verification

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