| 摘要 |
PURPOSE:To constitute a ring-shaped repeater transmission path of a remote repeater, by blocking and deleting only a transmission signal returned after one circulation. CONSTITUTION:The envelope signal of a transmission signal is generated by an outgoing signal (c) from a modulation transmission circuit by using a one-shot circuit PG enabled by a detection signal DR from a reception detection circuit which detects a reception from a bus transmission path. A reception prohibiting section signal P is generated by delaying the signal by a TD time by using a delay circuit DS. The signal P is inputted to a gate circuit, and only a returned transmission signal is not received and is deleted.
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