| 摘要 |
<p>PROBLEM TO BE SOLVED: To synchronize the databases of an application server always to the Internet and an information terminal connected through a packet communication channel, whose power source is not always turned on. SOLUTION: When the database 101a of the application server is renewed, renewed information of the database is reported to a packet conversion server 102a and packet communication equipment 102b transmits the renewed information as packets to the packet communication equipment 103. The packet communication equipment 103 directly reports the renewal of data in the case that the power source 104c of the information terminal is turned on and stores the packets in a data buffer 103a, turns on the power source of the information terminal 104 in a power source control part 103b and then transmits the database renewal information in the case that the power source is not turned on.</p> |
