Video stream switching
CA 2451956 A1 · Owner: Jacobs, Richard James · Inventors: Miras, Dimitrios; Jacobs, Richard James; Walker, Matthew David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A technique is described for providing a client on a packet based network with a stream of encoded video data. The system is able to maximise the bit-rate of the video stream by adapting to fluctuations in network capacity. The technique is characterised in that adaptation of the bit-rate of the transmitted encoded video data is timed to occur upon a scene change in the video sequence. In this way the interruption to the viewer when the perceived quality of the video sequence increases or decreases is minimised as it is 'hidden' in the scene change. The technique is described as applied to hierarchically encoded video data but equally may be applied to other encoding techniques …
Read the whole patent
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 19, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2024.
- 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
Timeline From CIPO dates
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.