Method and apparatus for determining a bit rate need parameter in a statistical multiplexer
CA 2321015 A1 · Owner: On, Hanson · Inventors: Chen, Jing Yang; Lam, Rebecca; Liu, Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group by scaling the complexities of previous pictures of the same and different picture types. Scaling factors based on an activity level motion estimation score, and number of pictures of a certain type in a GOP, may be used. Moreover the, scaling factors may be bounded based on a linear or non-linear operator to prevent large variations in the factors. An encoding bit rate is allocated to each channel based on its need parameter.
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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 September 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2022.
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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.