| 摘要 |
An information-processing device for communicating with a communication device includes a RTT measurement unit configured to measure a round trip time between the information-processing device and the communication device, a RTT judgment unit configured to determine whether the round trip time exceeds a predetermined upper limit value, a unit-type information acquiring unit configured to acquire an identification of the communication device when the round trip time is not greater than the upper limit value, a limit value judgment unit configured to measure amount of cumulative information accumulated during content is transmitted to the communication device, a cumulative information storage unit configured to store the measured amount of cumulative information, and a cumulative information management unit configured to control to store the cumulative information in the cumulative information storage unit when the amount of cumulative information exceeds a given limit value.
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