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    • 3. 发明授权
    • Control method of asynchronous data communications
    • 异步数据通信的控制方法
    • US5796720A
    • 1998-08-18
    • US597645
    • 1996-02-06
    • Toshiyuki YoshidaTakaharu KajiwaraYushi MurataNaoki SaseMasashi Hirome
    • Toshiyuki YoshidaTakaharu KajiwaraYushi MurataNaoki SaseMasashi Hirome
    • H04J3/08H04L12/26H04L12/28H04L12/42H04L12/43H04L12/437H04L12/46H04Q11/04H04J3/14
    • H04Q11/0478H04J3/085H04L12/4604H04L12/26H04L2012/5612H04L2012/5627H04L2012/5628H04L2012/5636H04L43/00
    • There is provided a communication control method for a network including duplexed ring transmission lines and a plurality of communication controlling devices each accommodating a plurality of terminals and adapted to transmit data sent from any of the terminals and receive data over the ring transmission lines, the communication control method comprising the steps of: causing one communication controlling device to transmit monitoring cells simultaneously over the duplexed transmission lines, the monitoring cells each including a pass indication area for retaining a source address and identification information for identifying a passed communication controlling device; and causing another communication controlling device which receives the monitoring cells respectively from the duplexed transmission lines to relay and circulate the monitoring cells respectively over the duplexed transmission lines after writing in the pass indication area of each of the received monitoring cells data indicative of passage of said each monitoring cell. The communication control method improves the efficiency of the fault monitoring and fault reporting on the transmission lines of the ring LAN.
    • 提供了一种用于包括双工环形传输线的网络的通信控制方法和多个通信控制设备,每个通信控制设备容纳多个终端,并且适于发送从任何终端发送的数据并通过环形传输线路接收数据,通信 所述控制方法包括以下步骤:使一个通信控制装置通过所述双工传输线同时发送监视单元,所述监视单元包括用于保留源地址的通过指示区域和用于识别通过的通信控制装置的识别信息; 并且从另一个通信控制装置接收分别从所述双工传输线路的监视小区,在写入所接收的每个监视小区的通过指示区域中,分别在所述双工传输线路上中继和循环所述监视小区,所述数据指示所述 每个监测单元。 通信控制方法提高了环网LAN传输线路故障监测和故障报告的效率。