| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that it is impossible to acquire a satisfactory broadcast signal from a receiving set which is arranged at an unfavorable position where receiving sensitivity is poor depending on an installed position, the direction and the like of an antenna. SOLUTION: An AV system is connected by a plurality of receiving sets and amplifying devices via a network. While outputting a broadcast signal received by an electric wave, the receiving sets detect the receiving sensitivity of the broadcast signal, and output the detected receiving sensitivity as receiving sensitivity information to the network. The amplifying devices output broadcast signals transmitted from the receiving sets which output the highest receiving sensitivity information from an outputting part, in comparison with the receiving sensitivity information acquired from the plurality of receiving sets connected to the network and the output part for amplifying and outputting a signal received by the amplifying device network interface. COPYRIGHT: (C)2007,JPO&INPIT
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