Method and apparatus for lossless encoding and decoding
CA 2883036 C · Owner: Sejong Industry-Academy Cooperation Foundation · Inventors: Lee, Yung-Lyul; Lee, Yung-Ki; Han, Ki-Hoon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lossless moving picture encoding and decoding method and apparatus are provided by which when intra prediction of a block with a predetermined size is performed the compression ratio is increased by using a pixel in a block to be predicted. The lossless moving picture encoding method includes: predicting each of pixel values in an M x N block to be predicted by using a pixel in the M x N block closest to the object pixel value in a prediction direction determined by an encoding mode; and entropy coding a difference between the predicted pixel value and the pixel value to be predicted. According to this method the compression ratio becomes much higher than that of a conventional lossless …
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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 7, 2005 and granted May 29, 2018. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.