Surveillance systems
CA 2098596 C · Owner: Katz, Barry · Inventors: Katz, Barry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for making and reviewing video recordings of transactions occuring at cashier lanes uses a television camera for developing frames of video signals of the transactions at two or more cashier lanes. A register at each lane generates digital signals representing events that occur at the lanes. A computer responsive to the digital signals generates a digital transaction signal. A VCR records the camera video signal and the computer digital transaction signal on a cassette the digital , transaction signal being recorded in a certain relation (e.g. in synchrony) with the camera video signal and in such a manner as to substantially not affect the clarity of each video frame. In a …
Read the whole patent
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
- Filed December 18, 1991 and granted July 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.