| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a communication terminal or the like capable of tracing propagation of contents without requiring a server in the case of disconnection of nodes in a network. <P>SOLUTION: In the network where nodes forward data to propagate information. a part of the whole of nodes constituting the network manages propagation history (a transmission source and a forwarding destination of data) information of data relayed by nodes themselves, in nodes themselves, and the entire propagation history of data can be restored by combining a part or the whole of history information distributed to nodes. <P>COPYRIGHT: (C)2004,JPO |
