Color uniformity compensation apparatus for cathode ray tubes
CA 1294034 C · Owner: Ashiya, Ryosuke · Inventors: Hosokawa, Hiromu; Momoi, Koichi; Ashiya, Ryosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dynamic uniformity correcting apparatus for color uniformity compensation for a cathode ray tube wherein each incremental area of the face of the cathode ray tube is examined with a photo-sensor and a correcting signal is produced and is supplied to an amplitude modulator to control the amplitude of at least two primary color signals and, thus to correct the color, produced on the picture screen and the correction value is memorized for each field for each incremental area and stored in a field memory so as to correct the white color signal.
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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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2009.
- 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.