Method and system for reducing latency in a multi-channel multicast streaming environment in content-delivery networks
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United States of America Patent
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Aug 9, 2011
Grant Date -
Jan 31, 2008
app pub date -
Jul 31, 2006
filing date -
Jul 31, 2006
priority date (Note) -
In Force
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Abstract
Methods, systems and apparatus for reducing apparent latency in content-delivery networks are provided. Sources multicast certain ‘preview multicast streams’ to multiple subscribers. These preview multicast streams provide pre-recorded content of multicast streams. When a subscriber switches to a desired multicast stream, pre-recorded content of the desired multicast stream is reconstructed from a preview multicast stream. Thereafter, the pre-recorded content is played during the setup of the new multicast distribution tree to minimize latency. Once the distribution tree is setup, live content of the desired multicast stream is made available to the subscriber.
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