| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable broadcast communication between members in group to be performed by automatically grouping users based on the presence information. <P>SOLUTION: If the state of a client X changes to a certain state (i), a group management unit 104 forms a group agent Xi corresponding to the state (i), and registers with a server S. A presence issuing unit 1022 issues the state (i) and the group agent's Xi identifier. The member of initial state which member management unit 112 of the group agent Xi is only the client X. When other clients, such as clients B, C who observe the state of the client X transmit an instant message (IM) to the group agent Xi identified by the issued identifier, the IM distributing unit 111 of the group agent Xi adds the clients B, C, etc. of the IM transmitters to the member managed by the member managing unit 112, and transmits the received IM to all the members. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
