| 摘要 |
The invention relates to a multicast router (8) of a content distribution system and a associated method adapted on the one hand, for receiving from an upper level of a network (1) multiplexed, in scalable video compression encoded, television channel bit-streams (14) and on the other hand, adapted to multicast said multiplexed, in scalable video compression encoded, television channel bit-streams (14) to a lower level of said network (1), comprising:
- a demultiplexer (16) of said multiplexed, in scalable video compression encoded, television channel bit-streams (14) into different in scalable video compression encoded, television channel bit-streams (24),
- encoded video layer extractors (18), able to select with respect to a television channel, different layers of said in scalable video compression encoded, television channel bit-streams (24),
- a statistical multiplexer controller (20) for controlling said encoded video layer extractors (18) to truncate selected layers of associated in scalable video compression encoded, television channel bit-streams (24) obtaining truncated, in scalable video compression encoded, television bit-streams (27), in order to adapt the output bit-rate to the allowable bandwidth (25) of the lower level of the network (1),
- a multiplexer (22) of said truncate, in scalable video compression encoded, television channel bit-streams (27), into multiplexed, in scalable video compression encoded, television channel bit-streams (29).
This invention relates also to a multicast system (31) and a network (1) comprising such a multicast router (8).
|
