| 摘要 |
<p>PROBLEM TO BE SOLVED: To make surely transmittable information in a state where the communications with an external device are recovered by setting the time interval needed for acquiring the information at least to a time longer than the time when the communications become possible if the communications with the external device via a network become impossible. SOLUTION: A CPU 101 inputs an information acquisition request which is outputted from a client 200 and sends the prescribed information to be client 200 based on the inputted request. Also, the CPU 101 gives an instruction to the client 200 to output the information acquisition requests at a prescribed time interval. Furthermore, the CPU 101 sets the prescribed time interval at which the client 200 wants to acquire the information at least to a time longer than the time when the communications become possible if the communications with the client 200 are impossible. The CPU 101 also estimates a state where the communications with the client 200 via a LAN 300 become impossible.</p> |
