Motion compensation method, picture coding method and picture decoding method
CA 2473897 C · Owner: Godo Kaisha Ip Bridge 1 · Inventors: Kadono, Shinya; Abe, Kiyofumi; Kondo, Satoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The picture coding apparatus (300) includes a motion vector estimation unit (302) that select one of methods for deriving a motion vector of a block to be motion-compensated depending on , a motion vector of a block located in a corner of a decoded macroblock among a group of blocks that compose the decoded macroblock corresponding to the current macroblock to be coded and determines the motion vector derived by the selected method for derivation to be a candidate of the motion vector of the current macroblock to be coded and a motion compensation unit (303) that generates a predictive image of the block to be motion--compensated based on the estimated motion vector.
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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 August 28, 2003 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 28, 2025.
- 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.