Apparatus for concealing error of moving pictures transform coding
CA 2084037 C · Owner: Hyodo, Masaaki · Inventors: Noguchi, Yoji; Hyodo, Masaaki; Katata, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for concealing an error of a moving pictures transform coding includes the first concealment circuit (19) for analyzing data according to a type of the data the data, being error-detected but not corrected by an error correction decoding by the decoder (12), for replacing the data with a specific data according to the analyzed result by using a predetermined method, and for outputting a specific signal therefrom, and the second concealment circuit (22) connected to the first concealment circuit (19) for replacing reproduced pixel values of an error-occurred block with reproduced pixel values of a previous frame according to the signal output from the first concealment circuit …
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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 November 27, 1992 and granted April 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 2014.
- 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.