Apparatus for processing mixed yuv and color palettized video signals
CA 2179784 C · Owner: Amano, Richard S. · Inventors: Amano, Richard S.; Butler, Donald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus processes mixed YUV and color palettized video signals, where "Y" of YUV is the luminance signal and "U" and "V" are the color difference signals, B-Y and R-Y respectively for, display on an interlaced NTSC or PAL television receiver by storing first and second fields of one or more sprites in a graphic memory. The sprites are stored as YUV or color palettized data and each sprite is given a priority. A higher priority sprite overwrites pixel data of sprites of a lower priority when sprites overlap. First and second adjacent horizontal lines of pixel data in the first and second fields respectively, are concurrently stored in respective first and second double buffers of a pixel …
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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 June 24, 1996 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2018.
- 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
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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.