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    • 7. 发明公开
    • 네트워크 노드사이에서 신호를 교환하기 위한 회로 및 방법
    • 传输/接收电路,传输/接收方法和记录介质
    • KR1020010015056A
    • 2001-02-26
    • KR1020000034685
    • 2000-06-23
    • 닛본 덴끼 가부시끼가이샤
    • 뉴다까유끼
    • H04L12/40
    • H04L12/40052H04L12/40026
    • PURPOSE: To normally send/receive a packet without propagating an undesired request signal in the case that an inter-node distance exceeds 4.5 m in a network adopting the serial bus IEEE 1394. CONSTITUTION: A counter 8 starts its operation in response to detection of a signal by a Child notify detection circuit 6 and stops its operation in response to the end of signal reception by a Parent notify detection circuit 7. A selector 9 selects a received signal or a generated pseudo Idle signal generated in response to a signal from a Data end detection circuit 6 and the count of the counter 8 and transmits the selected signal to a host layer. Thus, the pseudo Idle signal is transmitted in response to the end of packet transfer so as to prevent propagation of an undesired request signal caused when an inter-node distance exceeds 4.5 m and the packets can normally be transferred.
    • 目的:在采用串行总线IEEE 1394的网络中,在节点间距离超过4.5 m的情况下,不传播不需要的请求信号,以正常发送/接收数据包。构成:计数器8响应于检测到 由儿童通知检测电路6发出的信号,并且响应于父通知检测电路7的信号接收结束而停止其操作。选择器9选择响应于来自一个信号的信号产生的接收信号或产生的伪空闲信号 数据结束检测电路6和计数器8的计数,并将选择的信号发送到主机层。 因此,响应于分组传送的结束,发送伪空闲信号,以防止节点间距离超过4.5m而导致的不希望的请求信号的传播,并且分组可以正常传送。