Apparatus and method for synchronizing presence attribute...

Details Apparatus and method for synchronizing presence attribute... Apparatus and method for synchronizing presence attribute...

2004-03-29

2011-10-11

Avellino, Joseph (Department: 2454)

Electrical computers and digital processing systems: multicomput

Multicomputer synchronizing

C709S227000

Reexamination Certificate

active

08037207

ABSTRACT:
An apparatus and method for synchronizing data between a terminal and a server. The apparatus synchronizes presence attribute data when the terminal and the server are connected to each other to establish a messenger service between them. The client terminal requests presence attribute data to be updated from a server when it is reconnected to the server having been previously connected to the client terminal to perform the messenger service, and updates presence attribute data stored at a time of a previous connection upon receiving the presence attribute data to be updated from the server. The server receives a presence attribute data request to be updated from the client terminal, and transmits only updated presence attribute data, created after releasing the previous connection, from among current presence attribute data to the client terminal.

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