System and method for conducting fast channel change for IPTV
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United States of America Patent
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N/A
Issued Date -
Jul 26, 2007
app pub date -
Jan 25, 2006
filing date -
Jan 25, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system for conducting fast-channel switching of programming delivered as compressed data streams over a unicast channel includes a switch for receiving both fully-compressed and a partially-compressed versions of the data streams corresponding to available programming. Upon receiving a channel change request from a user, the switch switches to a partially compressed data stream of the requested program and delivers this data stream over the unicast channel. The switch then monitors a fully-compressed data stream of the requested program, and upon encountering an anchor frame therein, switches to delivery of the fully-compressed version of the requested program over the unicast channel.
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