OPTICAL COMMUNICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an optical communication device enabling each terminal to perform signal processing similarly to a conventional metal LAN even on an optical/metal mixed type passive star type network.

SOLUTION: An optical communication device sends out a signal to only an optical fiber 7b when there is an input from only an electric wire 8 and to the electric wire 8 and optical fiber 7b when there is an input from only an optical fiber 7a, and holds both an electric output signal and an optical output signal at H when there are input signals from both the electric wire 8 and optical fiber 7a and one of the electric input signal and optical input signal is at H. Further, when the electric input signal and optical input signal are both at L, the electric input signal and optical input signal are both held at L.

COPYRIGHT: (C)2008,JPO&INPIT