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    • 6. 发明授权
    • Multipoint link data-transmission control system
    • 多点链路数据传输控制系统
    • US4888728A
    • 1989-12-19
    • US31576
    • 1987-03-30
    • Masakazu ShirakawaHiroaki YamashitaToshio Nishida
    • Masakazu ShirakawaHiroaki YamashitaToshio Nishida
    • G06F13/00G06F13/42G06F15/16G06F15/177H04L12/403H04L29/06H04L29/08
    • H04L12/403G06F13/423
    • According to a multipoint link data-transmission control system, a master transmission device delivers message data via a bidirectional transmission path to a plurality of slave transmission devices, the data containing a control field for designating control data for setting or resetting a flag. The transmitting of data from the slave transmission device to the master transmission device is allowed when the flag is set, and is inhibited when the flat is reset. Where the transmitting of data from a faulty slave transmission device is to be inhibited, the master transmission device transmits the data to the faculty slave transmission device, by designating flag reset data to the control field of the message data. As a result, a transmission-enable signal, which is delivered in synchronization with a transmission-timing clock signal, is reset, thereby stopping the transmitting of data from the slave transmission device to the master transmission device.
    • 根据多点链路数据传输控制系统,主传输设备经由双向传输路径将消息数据传送到多个从属传输设备,该数据包含用于指定用于设置或重置标志的控制数据的控制字段。 当标志被设置时,允许从从属传输设备向主传输设备发送数据,并且当平面被复位时被禁止。 在要禁止从故障从属传输设备发送数据的情况下,主传输设备通过将标志复位数据指定给消息数据的控制字段来将数据发送给教师从属传输设备。 结果,与发送定时时钟信号同步地发送的发送使能信号被复位,从而停止从从属发送装置向主发送装置发送数据。