A system controlling an operation of an information processing device mounted on a mobile apparatus such as a motor vehicle to cause it to efficiently receive data, while ensuring economy of the resources of the mobile apparatus, is provided. According to the device control system (10), even when the motor vehicle (1) is switched from the ON state to the OFF state, the first information processing device (11) is maintained in the ON state exceptionally when the device is set to receive data through a high-speed broadcast channel. As such, the first information processing device (11) is maintained in the ON state, while the motor vehicle (1) is in the OFF state, to allow it to receive designated data through the high-speed broadcast channel. Further, since the designated data is broadcast at high speed by the information center (20), the time required for the first information processing device (11) to complete reception of the designated data is reduced.