Frame sampling scheme for video in video-on-demand system
CA 2342316 C · Owner: International Business Machines Corporation · Inventors: Kandlur, Dilip D.; Yu, Philip S.; Chen, Ming-Syan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method for performing variable speed scanning or by browsing wherein a user controls the playout speed of a movie which does not require additional disk or network bandwidth resources. In a preferred embodiment the method provides for scanning operations for an MPEG video stream. The method satisfies the constraints of the MPEG decoder (in the users set-top box) and require a minimum of additional system resources. The embodiments of the present invention include (a) a storage method (b1) a segment sampling method, (b2) a segment placement method and (c) a playout method, where (b1) and (b2) are two alternatives for segment selection. Thus two sets of solutions are provided to …
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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 February 17, 1995 and granted August 12, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2017.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.