DATA TRANSMISSION/RECEPTION SYSTEM, SERVER SYSTEM, AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a system for enabling a device for reception to receive and utilize transmission data obtained from the measurement data of a sensor device. ! SOLUTION: A sensor device 2 transmits measurement data obtained from a sensor 20 to a relay device 3, and the relay device 3 uploads M2M data including the measurement data collected from the sensor device 2 to a server system 5. The server system 5 generates transmission data based on the uploaded M2M data, and encrypts the transmission data by the encryption key of an undertaker permitted to use the transmission data, and broadcasts the transmission data through a broadcast wave by using a broadcast wave base station 5. A device 4 for reception which has received the transmission data decrypts the transmission data by using a decryption key stored in the device 4 for reception, and when the transmission data are normally decrypted, outputs a control signal based on the transmission data to equipment to which the device 4 for recept