| 摘要 |
PURPOSE:To control the congested state of packets without using a software in fast packet communication. by circulating the packet to be sent in a feedback loop when the congested state is generated on a sending transmission line. CONSTITUTION:When the congested state, that is a state where sending onto a transmission line II to which the packet data of a transmission FIFO memory 3 is to be sent, is impossible, a congestion indicating circuit 5 provided in its own controller receives an alarm signal, and switches a gate 4, and controls the packet in the transmission FIFO memory 3 so as to be transferred to a feedback FIFO memory 6. A timing control circuit 7 receives an output signal from the congestion indication circuit 5, and circulates the packet encountered to the congested state within a feedback circuit including the feedback FIFO memory a, and the loop including the transmission FIFO memory 3, the gate 4, and a packet switch 2, while the output signal represents the congested state, and when the congested state is dissolved, the packet is sent by opening the gate 4.
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