Method and apparatus for reducing the unwanted effects of noise present in a three dimensional color imaging system
CA 2197410 C · Owner: National Research Council Of Canada · Inventors: Rioux, Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is provided that lessens the unwanted effects of noise present at the input of an imaging system. By tapping a small portion of a laser input signal containing wavelengths of light corresponding to red blue, and green of light used to scan, the surface to be imaged the tapped signal is used to generate three beams that correspond to the red, blue, and green content of the laser input signal. Signals generated at the output of the system that correspond to the color of the scanned surface are normalized with the signals that correspond to the three beams generated by the tapped signal. The normalized output signal indicative of the color of the surface is noise …
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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
- Filed February 12, 1997 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.