| 摘要 |
PROBLEM TO BE SOLVED: To synchronize a dynamically varying buddy list among terminals when one person uses a plurality of the terminals on a presence system. SOLUTION: A presence notification message is transmitted to all of the user's terminals. The transmission is timed to, for example, update of presence information of a buddy, setting of a new buddy, update of display attribute information, cancellation of the buddy and presence notification of unknown presentity. By this, the buddy list is synchronized among the dynamically varying terminals when the person uses a plurality of the terminals on the presence system, and further the buddy list is displayed in the same form with no variation in display form among the terminals. COPYRIGHT: (C)2004,JPO
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