Encoding method and system, and decoding method and system
CA 2197329 C · Owner: Ryu, Tadanori · Inventors: Tokuda, Masashi; Ryu, Tadanori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Image data which is to be compressed (to-be-compressed image data) is encoded repeatedly using a respective one of a plurality of templates. The compression rates of encoded data of each template are compared with each other. The encoded data with the highest compression rate is used and the corresponding template identification is output with the encoded data. The encoding comprises entropy coding. To-be-compressed data comprises video game software programs.
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 June 17, 1996 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 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
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.