Patent ID: 11882340
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The content distribution method according to claim 10, wherein
the multicast-unicast conversion device determines whether the multicast-unicast conversion device participates in a multicast group corresponding to the content corresponding to the request from the terminal,
when the multicast-unicast conversion device participates, the demand is made on the multicast group in which the multicast-unicast conversion device participates for the content corresponding to the request from the terminal,
when the multicast-unicast conversion device does not participate, the demand is made on the unicast-multicast conversion device for a content using unicast communication, and
when having received the demand for a content using unicast communication, the unicast-multicast conversion device transmits, to the multicast-unicast conversion device by using unicast communication, the content corresponding to the request from the terminal.