Video processing apparatus
CA 2037909 C · Owner: Nishiumi, Satoshi · Inventors: Nishiumi, Satoshi; Miyoshi, Michitaka; Takahashi, Toyofumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A video processing apparatus includes a VRAM in which image data of an original background picture is stored. An address of the VRAM in a case where the original background picture is rotated and enlarged or reduced is calculated by a background picture address control circuit on the basis of constants set by a CPU. Color data of the background picture at the time of rotation processing and enlargement or reduction processing is read from the address of the VRAM and a, video signal is generated by the color data.
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
- Filed July 26, 1990 and granted February 1, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 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.