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Expired Canadian patentCanada

Motion and intrustion detecting system

CA 1181163 A · Owner: Beck, Donald · Inventors: Mick, Peter; Beck, Donald

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 motion and intrustion detecting system wherein scanning at two different rates is carried out in order to more reliably detect fast and slow motion in a scene being viewed. Also increased noise immunity is, provided by providing a special scan which generates signals inhibiting generation of alarm indications corresponding to points at which a possible noise situation exists.

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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 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 9, 1981
GrantedJanuary 15, 1985
Term endedJanuary 15, 2002
Patent numberCA 1181163 A
Classification (IPC)H04N7/18 +1 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedJune 9, 1981Patent grantedJan 15, 1985Term endedJan 15, 2002

Sources & verification

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