Method of and system for enhancing distorted graphical information
CA 2134696 C · Owner: Jayant, Nuggehally Sampath · Inventors: Jayant, Nuggehally Sampath; Liu, Tsann-Shyong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for and method of enhancing image/video signals to be decoded is disclosed. The system for and method of post-filtering uses preferably, a, temporal filter (e.g. 110) and a spatial filter (e.g. 112) both of which , are adaptive, but neither is required to be adaptive. However the system for and method of , post-filtering may also be used with only an adaptive spatial post-filter. In this case the, performance is upper-bounded by the performance of systems using both the adaptive temporal and adaptive spatial post-filter.
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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 October 31, 1994 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 2016.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.