Electrical computers and digital processing systems: multicomput – Distributed data processing – Client/server
Reexamination Certificate
2006-08-01
2006-08-01
Pwu, Jeffrey (Department: 2143)
Electrical computers and digital processing systems: multicomput
Distributed data processing
Client/server
C709S227000, C709S230000, C709S232000, C370S352000, C713S375000
Reexamination Certificate
active
07085809
ABSTRACT:
There is provided a data synchronization system, data synchronization method, data center, and client terminal that allow a client terminal to determine whether data held by the client terminal is up-to-date and allow synchronization between a server and the client to be maintained at low costs in a case where synchronization between data in the server and data in the client terminal is provided.The data synchronization system for keeping the sameness between data in a client terminal10and data in a data server20through a communication link comprises a synchronization data transmitter25for sending to the client terminal10data to be kept same as data in the client terminal10, a synchronization signal output module33for sending a synchronization signal for checking the sameness to the client terminal10at predetermined timing, and a synchronization signal transmission controller23for controlling the transmission of the synchronization signal by the synchronization signal output module33based on the result of the synchronization signal transmission by the synchronization signal output module33.
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Mori Shinichiro
Ogawa Ai
Greer Burns & Crain Ltd.
Pwu Jeffrey
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