PURPOSE: To narrow a transmission band area and to easily perform service and management by every subscriber, by selecting an information signal by a tuner on a center A side, and transmitting the information signal of a selected baseband to respective subscriber.
CONSTITUTION: The same number of plural tuners 6a, 6b, 6c, ... provided in a CATV center A as that of receivers making a contract to use a CATV system, are arranged, and channel selection is indicated by a selection signal being supplied from a receiving house-hold B side. And the demodulation signal of the baseband is set by demodulating the signal of an indicated channel, and is supplied to photoelectric transducers 7a, 7b, 7c... corresponding to each tuner. A main receiver 10, when a supplied demodulation signal being the signal of the channel of a television broadcasting, supplies the demodulation signal to a TV adapter 10a as it is, and the viewing of the television broadcasting can be performed on a television receiver 13.
SUGIYAMA HISAYOSHI
TOYOSHIMA MASAKATSU
FUKAMI TAKESHI
SAKAMOTO AKIRA
TERAUCHI TOSHIRO
SONY CORP