Reconnaissance/surveillance system utilizing color signature of target
CA 1091351 A · Owner: The Government Of The United States As Represented By The Secretary Of T He Army · Inventors: Ball, Vincent W.; Levy, Marilyn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photo-reconnaissance/surveillance system in which the landscape to be scanned is photographed on color film. The film is then developed in a high-speed processor and scanned by photosensors. Illuminations for the sensors is provided by a plurality of point sources of light. Colored filters, e.g. a green filter and a blue filter are, alternately interposed between the light sources and the film. A logic circuit compares the transmission through the film for both light conditions and, thus, can detect the presence of a target if the color, signature of the target is known a priori.
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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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 1997.
- 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.