Image processing and method
CA 2015381 C · Owner: International Business Machines Corporation · Inventors: Itoh, Masaharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure relates to high-speed image processing apparatus and a method for rotating two dimensional original images. Image processing apparatus as described includes a scaling means for responding to scaling values decided by a rotation angle to generate each pel row of a scaled image of the original image; means for responding to values of horizontal and vertical shears decided by the rotation angle to perform horizontal shear and vertical shear operations to generate an address in an output image memory into which the first pel of the pel row of the scaled image is stored; a line generator means for responding to the value of vertical shear and the address of the first pel to …
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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 April 25, 1990 and granted June 7, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2012.
- 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.