| 摘要 |
A dual media network interface module for interconnecting optical and electrical local area networks (LAN) includes an electrical network interface (3) and an optical network interface (5) each having a transmit port (9, 15) to which signals to be transmitted on the associated network are applied and a receiver port (11, 17) at which signals received on the network are generated. The receiver port of each interface is connected to the transmitter port of the other interface so that signals received on either network are retransmitted on the other network. Blocking circuits (61, 63) block the receiver signal of a LAN which is transmitting during the transmitting interval plus an interval which exceeds the worst case propagation time for the associated network to prevent endless repetition of a signal. |
