Color video system using data compression and decompression
CA 1235533 A · Owner: Real Time Design, Incorporated · Inventors: Campbell, Graham M.; Defanti, Thomas A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of generating a color video display comprises the steps of dividing a color image to be displayed into a matrix of blocks, each block comprising a matrix of pixels storing data identifying a multiplicity m of different colors, the data being stored in a color map memory having a unique address for the data identifying each different color; selecting different pairs of the m colors for different blocks of the color image to be displayed; generating a pixel data bit for each pixel in each of the different blocks the value of each pixel data bit identifying one of the pair of colors selected for the block in which the corresponding pixel is located; generating different pairs of …
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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 April 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 19, 2005.
- 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
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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.