Communication system, information-processing device, and program

摘要

A communication system is configured to include at least one information-processing device (10), at least one information-providing server (20) and a management server (30). The management server (30) manages whether contents to be transmitted to the information-processing device (10), which has been registered with the information-providing server (20), are available in the information-providing server (20). The information-processing device (10) requests the management server (30) to check availability of specified contents at intervals of a transmission period predetermined for each of the specified contents and receives a check result therefrom. If a plurality of transmission services is to be started, the information-processing device (10) requests the management server (30) to check availability of the contents corresponding to the plurality of transmission services at intervals of a single transmission period which is determined based on the transmission periods predetermined for the contents corresponding to respective ones of the plurality of transmission services.