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Expired Canadian patentCanada

Sequential data block address processing circuits

CA 1163723 A · Owner: Sony Corporation · Inventors: Ive, John G.S..

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 sequential data block address processing circuit for deriving address signals in dependence on incoming data which comprises sequential blocks of data each including an address signal representing a number the, numbers changing cyclically from block to block for example where the, incoming data is derived from a video tape recorder and represents video information comprising sequential blocks of data each representing a horizontal line scan of video information and each including a line address signal, the circuit comprising an address counter to generate output address signals corresponding to the incoming address signals and likewise changing cyclically from block to block under control …

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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 March 13, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 22, 1981
GrantedMarch 13, 1984
Term endedMarch 13, 2001
Patent numberCA 1163723 A
Classification (IPC)G06F9/32 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedJan 22, 1981Patent grantedMarch 13, 1984Term endedMarch 13, 2001

Sources & verification

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