Image processing apparatus
CA 1314639 C · Owner: International Business Machines Corporation · Inventors: Miyazawa, Atsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, In an image processing device for performing image protective transformation in which uncoded source image information defined in a rectangular area on a plane is projected on a quadrangular area delimited by any four points on the same plane, the hyperbola generated by, mapping of a conventional linear fractional function which expresses x and y data constituting the co-ordinates for source image pixels, is incrementally generated by use of a recurrence formula to simplify the projective transformation. JA9-88-006
Read the whole patent
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 March 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 16, 2010.
- 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.