| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a network system, in which a special communication band limitation does not occur when performing broadcast communication and further, lowering of communication efficiency is suppressed by suppressing a data communication quantity in the broadcast communication to a minimum. SOLUTION: This communication network is provided with switch means 1152 and 1151, which are connected through input terminals 1101-1104 to parallel plural channels, for outputting signals inputted from the respective channels through output terminals 1171-1174 to any one of plural channels, selection parts 1161-1164 of separation means, which are connected to each of plural channels, for separating a specified signal from the connected channels or outputting that signal to the channels as well simultaneously with separation and terminals connected through terminal signal input/output ports 1181-1184 to all the plural channels, and a parallel ring transmission line is constituted by connecting the plural channels through the switch means 1152 and 1151 of the respective nodes in the shape of ring.</p> |
