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Expired Canadian patentCanada

Interactive real-time video processor with zoom, pan and scroll capability

CA 1258912 A · Owner: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty'S Canadian Government · Inventors: King, Stephen J.; Magee, Lochlan E.

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 video processor used in conjunction with commercial video products provides realistic visual imagery and a dynamic interactive capability. The outputs from three video digitizers one for each of, the primary colours red green and blue (RGB) of a composite video signal, are stored in high speed, serial access memory devices. The output of the memory devices is converted to an analog signal for an ordinary RGB monitor. Image content can be transformed in real-time via microprocessor control of selected data in the memory devices encoding, and retrieval circuits permitting a portion of the original video signal to completely fill a normal RGB monitor. As well computer generated, imagery can …

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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 29, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 29, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 20, 1986
GrantedAugust 29, 1989
Term endedAugust 29, 2006
Patent numberCA 1258912 A
Classification (IPC)H04N9/79 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedNov 20, 1986Patent grantedAug 29, 1989Term endedAug 29, 2006

Sources & verification

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