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1. 发明授权

US06639893B1 Communication network system including ring network that performs communication through multiple switching devices 失效
标题翻译：通信网络系统，包括通过多个交换设备进行通信的环网
公开(公告)号：US06639893B1
公开(公告)日：2003-10-28
申请号：US09280057
申请日：1999-03-29
申请人： Takamitsu Chikenji , Michiaki Eri
发明人： Takamitsu Chikenji , Michiaki Eri
IPC分类号： G06F1116
CPC分类号： H04L1/22
摘要： Two between-ring connection node devices are placed between ring networks A and B, these are connected by between-ring transmission lines for which it is possible for each of the items that face each other to switch between current use lines and spare lines, and for each ring network, the two between-ring connection node devices are operated to switch between being a current use system or a spare system. While being able to avoid communication interruptions between ring networks due to faults of the between-ring connection node device itself, it is also possible to avoid communication interruption when line switching fails between-ring transmission lines, and thus to increase fault resistance.
摘要翻译：两个环形连接节点设备放置在环网A和B之间，它们通过环形传输线连接，对于这些传输线，可以使彼此面对的每个项目在当前使用线路和备用线路之间切换，以及对于每个环形网络，两个环形间连接节点设备被操作以在当前使用系统或备用系统之间切换。由于环形连接节点设备本身的故障能够避免环网之间的通信中断，因此当线路交换在环形传输线路之间发生故障时也可以避免通信中断，从而增加故障电阻。

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