| 摘要 |
<P>PROBLEM TO BE SOLVED: To dynamically change the presence information of a presentity inside a presence service client with the change of the presence information in the other one, two or more presentities as a trigger. <P>SOLUTION: The presentity service client 101 has the presentity 106 that issues the presence information to a presence service 103 and a watcher 107 which observes the presence information of the other presentities 102. A presence change rule holding part 105 holds a presence change rule. A presence calculating part 104 changes the presence information of the presentity 106, using as the trigger the change in the presence information of the other presentities 102, according to the presence information of the other presentity 102 acquired by the watcher 107 and the presence change rule held by the presence change rule holding part 105. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
