Method and apparatus for inputting and outputting color pictures and continually-changing tone pictures
CA 2198670 C · Owner: Tsukuba Software Laboratory Co. Ltd. · Inventors: Haruki, Ryoji; Horiuchi, Takahiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for inputting, compressing memorizing, and regenerating continually-changing tone pictures or color pictures, which allows us to store the image data by a small amount of memory, to output the regenerating picture in a short time and to enlarge the picture in any size with keeping its quality. The apparatus proceeds the inputting steps of reading-in a continually-changing picture, dividing the picture into a plurality of regions of the pixels having similar tones within a width 2W reckoning an average tone of every region producing an, average-tone picture by painting every region with the average tone, extracting boundaries dividing neighboring regions artificially, seeking …
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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 27, 1997 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 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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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.