Color temperature selection circuitry having color matrix correction
CA 2112996 C · Owner: Lendaro, Jeffery Basil · Inventors: Lendaro, Jeffery Basil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a television receiver including a feature allowing a user to select a color temperature at which whites will be produced on a display screen, circuitry is provided for altering the gain of the red and blue kine driver stages and simultaneously automatically altering the gain of the R-Y and B-Y color difference signal amplifier to correct for errors which would otherwise be introduced by adversely altering the B-Y / R-Y ratio.
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 January 6, 1994 and granted December 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 6, 2016.
- 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.