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Expired Canadian patentCanada

Media stream scheduling for hiccup-free fast-channel-change in the presence of network chokepoints

CA 2480909 C · Owner: Microsoft Corporation · Inventors: Green, Dustin L.

CIPO record

Overview

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Abstract From the Canadian patent

An implementation, as described herein facilitates fast start-up of a new media stream while avoiding temporal interruption (i.e. "hiccups") of the presentation of that new media stream. At least one implementation described herein, coordinates the delivery of multiple simultaneous media streams on a media-stream network. Its coordination accounts for traversal of bandwidth- restricted chokepoints; quickly stopping delivery of one or more media streams from the set of streams; quickly initiating delivery and presentation of one or more new media streams not previously in the set (i.e. a "channel change"); and producing clean playback of all of the streams in the set despite their different …

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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 8, 2004 and granted August 23, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 8, 2004
GrantedAugust 23, 2016
Term endedSeptember 8, 2024
Patent numberCA 2480909 C
Classification (IPC)H04L29/02 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedSep 8, 2004Patent grantedAug 23, 2016Term endedSep 8, 2024

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.