Method and system to replace sections of an encoded video bitstream
CA 2202171 C · Owner: Ng, Sheau-Bao · Inventors: Unno, Hiroaki; Mimura, Hideki; Cookson, Christopher J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system (Figs. 34 and lA) in which a section of a previously encoded digital bit stream (Fig. 33A) is replaced with another section of encoded video (Fig. 33D). In order to remove a section of encoded video, it is necessary to determine the beginning and ending points of the encoded video in the digitally encoded bit stream (Fig. 33A). The addresses of the beginning and ending points are calculated by summing the bits consumed by each picture, the number of bits of the sequence header of each picture, the number of bits of each Group of Pictures (GOP) header and all stuff bits. In order to encode the video which is to be inserted in place of the removed video a process is …
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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 April 19, 1996 and granted October 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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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.