Fast channel change
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United States of America Patent
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Jul 14, 2009
Grant Date -
Apr 14, 2005
app pub date -
Oct 10, 2003
filing date -
Oct 10, 2003
priority date (Note) -
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Abstract
In an exemplary server implementation, a server is configured to retain at least one independent frame for each video channel of multiple video channels that are being distributed using multicast communications and is adapted to respond to channel change requests from clients by transmitting the retained at least one independent frame of a requested video channel to a requesting client using a unicast communication. In an exemplary method implementation, a method for fast channel changing in a multicast video distribution architecture includes: detecting a channel change request that indicates a requested channel, the requested channel corresponding to a multicast group; and transmitting a retained intra frame for the requested channel as a unicast communication.
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