| 摘要 |
PURPOSE:To provide an information delivery method capable of preventing the leakage of transmission at the time of switching without reducing a transmission speed in an asynchronous dual system. CONSTITUTION:Information obtained by allocating serial numbers to information units is received by transmission servers 1a, 1b connected so as to be mutually asynchronously driven and having the same constitution, processing information from an I/O processing means 10 is transmitted from one transmitting server connected to a transmitted destination 5 through a switching device 4. The processing information is stored also in a storage means 20, and when a connection state with the destination 5 is switched to the other transmitting server, a monitoring means 30 mutually compares the newest serial numbers (processing numbers) transmitted by both the managed servers 1a, 1b and a restoring means 40 reads out omitted information due to switching from the means 20 and transmits the read information to the destination 5. |
