Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
CA 2820164 C · Owner: Apple Computer, Inc. · Inventors: Dumitras, Adriana; Puri, Atul; Haskell, Barin G.
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 variable accuracy inter-picture timing specification for , digital video encoding is disclosed. The display time difference between a current video , picture and a nearby video picture is determined and encoded into a digital representation of , the video picture. For error resilience the display time difference is , transmitted several times within the picture in slice headers of MPEG or H.264 standard.
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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 July 11, 2003 and granted August 23, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 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.