| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to continue communication by flexibly using a plurality of interface circuits even if one or more signal paths connected with one interface circuit get interrupted.SOLUTION: A transmission device 601 transmits a signal to multiple signal paths in a communication line 603 by means of an interface circuit 612 and an interface circuit 613, and a reception device 602 receives the signal by means of an interface circuit 622 and an interface circuit 623. The interface circuit 612 and the interface circuit 622 are connected with one or more signal paths 631 in the communication line 603, and the interface circuit 613 and the interface circuit 623 are connected with the remaining signal paths 632. If the signal paths 631 got interrupted, a control circuit 614 controls the transmission circuit 611 to transmit a signal via the signal paths 632, and a control circuit 624 controls the reception circuit 621 to receive the signal from the signal paths 632. |
