Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements fo division operations
CA 2502004 C · Owner: Puri, Atul · Inventors: Haskell, Barin, G.; Puri, Atul; Singer, David, W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for performing motion estimation in a digital video system is disclosed (Fig.1). Specifically the present invention discloses a , system that quickly calculates estimated motion vectors in a very efficient manner (Fig.1, item 160). In one embodiment a first multiplicand is , determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value (Fig.1 items 150, 160). This step scales up a numerator for a ratio (Fig.1 item , 120). Next, the system determines a scaled ratio by divi ding that scaled numerator by a second first display time difference between the second video picture and a …
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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.
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- Filed August 7, 2003 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.