Filtering strength determination method, moving picture coding method and moving picture decoding method
CA 2448064 E · Owner: Shen, Sheng Mei · Inventors: Kadono, Shinya; Lim, Chong Soon; Shen, Sheng Mei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moving picture coding apparatus includes ( i ) an inter-pixel filter (114) having the following filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries: a filter A114a a filter B114b, a filter , C114c, a filter D114d each having a different filtering strength and , ( ii ) a filter processing control unit (110) for determining a filtering strength of the inter-pixel filter (114).
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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 26, 2003 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 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.