Matsushita Electric Industrial Co., Ltd.

Kazuhiro Takasao

Toshiaki Tsuji

A digital broadcast transmission/reception system includes a transmission posting apparatus for performing a communication call through a telephone line network before a broadcast transmission apparatus starts transmitting individual information. The system also includes a distributor having a register which stores a transmitter ID signal of the transmission posting apparatus. The distributor compares a transmitter ID signal at the communication call with the transmitter ID signal stored in the register, outputs a power control signal when these ID signals match, and connects the telephone line network with a telephone when these ID signals do not match. The system also includes a power control apparatus for tuning ON power to a broadcast reception apparatus according to the power control signal. Therefore, the power to the broadcast reception apparatus can be controlled through the telephone line network.

Power control apparatus, digital broadcast reception system, transmission posting apparatus, power state identification apparatus, communication cutoff decision apparatus, state posting apparatus, state recognition apparatus, state recognition system, and digital broadcast transmission/reception system using them

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Kyoto, Japan

Kazuhiro Takasao