Matching hardcopy color to display color
CA 1262286 C · Owner: Tektronix, Inc. · Inventors: Hoffman, Gregory L.; Mcmanus, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
16-, Abstract of the Disclosure, A method for matching hardcopy color to display color for registered-dot ink-jet copiers. Video RGB is converted into chromaticity coordinates in XYZ color space. An explicit solution is achieved by defining a new MSW color space which restricts the hardcopy colors to some percentage of one of the binary Mixtures of inks, some percentage of one of the Single inks, and some percentage of paper White. The color data in XYZ space is converted to MSW space and unreachable colors are mapped into reachable colors. Correction for hardcopy non-linearities is accomplished by considering the interaction among the inks by using a coverage ratio to correct for color …
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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 October 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 10, 2006.
- 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.