Image processing device
CA 2215617 C · Owner: Sharp Kabushiki Kaisha · Inventors: Takeda, Yuuki; Yamada, Hideaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an image processing device that can prevent the occurrence of moire patterns when processing a dot image. An image processing device according to the present invention comprises an image memory for storing multi-gradational image data an area-deciding portion for deciding an area of pixels PIX (x y) of a multi-gradational image stored in the memory and outputting a decision signal SEL=0 when the pixel is a character area pixel or a decision signal SEL=1 when the pixel is a halftone area a binarizing portion for character for binarizing a character image pixel PIX (x y) of the multi- gradational image data stored in the memory and outputting a binarized …
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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 September 16, 1997 and granted August 7, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.
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.