| 摘要 |
PROBLEM TO BE SOLVED: To provide a hierarchical coding video distribution system where there is no limitation on a processing capability of a user terminal when the user terminal at a receiver side applies reception, synthesis and display processing to IP multicast channels that are hierarchically divided. SOLUTION: The hierarchical coding video distribution system is provided with: a server that hierarchically separates a 1st video stream into m-sets of 2nd video streams and uses a 1st multicast channel to distribute them, a gateway that uses m-sets of 1st multicast channels to receive the 2nd video streams, integrates and processes the m-sets of the 2nd video streams into 3rd video streams for n-sets of 3rd video streams on the basis of a desired integral hierarchy number indicated by user terminals and distributes them to the user terminals, and the user terminals each of which receives the 3rd video stream, decodes it and displays the signal. |
