TRANSMISSION SYSTEM FOR FUSING BROADCASTING/COMMUNICATION SIGNALS TO TRANSMIT DATA COMMUNICATION AND CATV BROADCASTING SIGNALS USING A SINGLE CABLE

摘要

Purpose: for melting, broadcasting/communication signal is arranged to transmit data communication a Transmission system and CATV (cable television) broadcast singals use a single optical cable and reduction equipment cost. Construction: an Ethernet exchanging unit (20) receives the communication of downward optical signal (a1) loop-around data by internet (10). One broadcast/communication shows that optical fusion unit (40) receive fuse and inputted from the downward optical signal and optical signals of Ethernet exchanging unit for CATV broadcast (b1) by a CATV nets (30). Each multiple broadcast/communication sends signal light and divides unit (70a, 70b,..70n) optical signals of fusing (a1+b1) are divided into downward optical signal and for the optical signals of CATV broadcast, for by an ethernet end device (60) broadcast to a television receiver (50) and downward optical signal to the CATV output optical signals of personal computer by. Here, upward optical signal (a2) loop-around data inputted from personal computer communicates and is sent to internet by Ethernet terminal units, broadcast/communication shows light point unit, and broadcast/communication shows optical fusion unit and Ethernet exchanging unit.