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    • 5. 发明授权
    • Data flow control arrangement for local area network
    • 局域网的数据流控制布置
    • US4787082A
    • 1988-11-22
    • US890262
    • 1986-07-24
    • Robert H. DelaneyAlexander G. FraserCharles R. Kalmanek, Jr.Robert C. Restrick, III
    • Robert H. DelaneyAlexander G. FraserCharles R. Kalmanek, Jr.Robert C. Restrick, III
    • H04L12/46H04L12/56H04J3/02
    • H04L47/10H04L12/46
    • In a local data distribution network configuration a plurality of bidirectional data distribution busses are each connected to a bus master control circuit at a terminal end of the bus. Connected to each of the data distribution busses are a plurality of passive outlets to which intelligent connectors or stations may be connected. Each station has a unique address and is utilized for individually coupling data processing devices to the bus. Grouped pluralities of the bus master control circuits are included within a bus termination hub facility. Data from any of the bus master control circuits may be transferred by the bus termination hub via a data trunk as part of a star type configuration, to a central switching circuit such as a virtual circuit switch. Direction of data flow on each of the bidirectional busses and periodic temporary synchronization of the stations is controlled in response to signals transmitted to the bus by the bus master control circuitry associated with that bus. A bus termination hub switching facility cooperates with the included group of bus master control circuits to interconnect data processing stations on the various busses with the virtual circuit switch via the trunk line and with each other.The bus termination hub facility further includes bus monitoring, status polling and maintenance facilities. A faulty bus will be disconnected if a fault is discovered during monitoring intervals. It will remain disconnected until the fault is corrected.
    • 在本地数据分配网络配置中,多个双向数据分配总线各自连接到总线终端处的总线主控制电路。 连接到每个数据分发总线的是多个可以连接智能连接器或站的被动出口。 每个站具有唯一的地址,并用于将数据处理设备单独耦合到总线。 总线主控制电路的分组多个被包括在总线终端集线器设备内。 来自任何总线主控制电路的数据可以由总线终端集线器经由作为星型配置的一部分的数据中继线传送到诸如虚拟电路交换机的中央交换电路。 响应于与总线相关联的总线主控制电路发送到总线的信号,来控制各个双向总线上的数据流的方向和站的周期性暂时同步。 总线终端集线器交换设备与所包括的总线主控制电路组合配合,以便通过主干线和彼此将各种总线上的数据处理站与虚拟电路交换机互连。 巴士终点枢纽设施还包括巴士监控,状态查询和维护设施。 如果在监控期间发现故障,故障总线将断开。 它将保持断开,直到故障得到纠正。