BROADCASTING SYSTEM, TRANSMISSION DEVICE, AND RECEPTION QUALITY DETECTION AND NOTIFICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To select the best transmission power control and the best transmission system for reception devices at all points by totally taking the reception quality of the reception devices at the respective points into account. SOLUTION: A transmission device 1 sends a radio wave 101 for broadcasting with pre set transmission power by a preset transmission system and a reception device 2 receives the radio wave 101 and displays the broadcast contents. At this time, a reception quality detection and notification device 3 receives the radio wave 101 and notifies a transmission controller 4 of reception quality information 102. The transmission controller 4 determines the best transmitting method by using reception quality information 102 from multiple points and informs the transmission device 1 of the information as transmission control information 103 and the transmission device 1 changes the transmitting method according to the transmission control information 103.