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1. 发明授权

US5680397A Multi-port LAN switch for a token-ring network 失效
标题翻译：令牌环网络的多端口LAN交换机
公开(公告)号：US5680397A
公开(公告)日：1997-10-21
申请号：US402740
申请日：1995-03-13
申请人： Kenneth J. Christensen , Francis E. Noel , Rudolf E. Rehquate , Thomas Stammely , Jerry Dagher , Beymer Bevill, Jr.
发明人： Kenneth J. Christensen , Francis E. Noel , Rudolf E. Rehquate , Thomas Stammely , Jerry Dagher , Beymer Bevill, Jr.
IPC分类号： H04L12/42 , H04L12/44 , H04L12/16
CPC分类号： H04L12/44 , H04L12/42
摘要： A multi-port LAN switch is provided that enables attached network devices to both communicate directly and to insert into a token-ring network through an attached concentrator. Each port of the multi-port LAN switch has a first transformer, a second transformer, and a switching system. The first transformer has a first winding connected to a first connection of the port. The second transformer has a first winding connected to a second connection of the port. The switching system switches to a port mode or an adapter mode as a function of a mode signal transmitted to the port. In the adapter mode, the switching system connects a second winding of the first transformer to a transmitter circuit in the port, and its connects a second winding of the second transformer to a receiver circuit in the port. In the port mode, the switching system connects the second winding of the first transformer to the receiver circuit in the port, and it connects the second winding of the second transformer to the transmitter circuit in the port. Each port of the multi-port LAN switch further includes a DC voltage source that is switchably connected to the first connection of the port through a first switch. Each port further includes a second switch that connects the second connection of the port to a DC return-path in a first position, and connects the second connection to the first connection when in a second position.
摘要翻译：提供了一种多端口LAN交换机，使连接的网络设备能够直接通信，并通过附加的集中器插入令牌环网络。多端口LAN交换机的每个端口具有第一变压器，第二变压器和开关系统。第一变压器具有连接到端口的第一连接的第一绕组。第二变压器具有连接到端口的第二连接的第一绕组。交换系统根据发送到端口的模式信号切换到端口模式或适配器模式。在适配器模式中，开关系统将第一变压器的第二绕组连接到端口中的发射器电路，并且将第二变压器的第二绕组连接到端口中的接收器电路。在端口模式下，开关系统将第一变压器的第二绕组连接到端口中的接收器电路，并将第二变压器的第二绕组连接到端口中的发射器电路。多端口LAN交换机的每个端口还包括直流电压源，其通过第一开关可切换地连接到端口的第一连接。每个端口还包括第二开关，该第二开关将端口的第二连接连接到第一位置的直流回路，并且当处于第二位置时将第二连接连接到第一连接。

2. 发明授权

US06278695B1 Multi-port LAN switch for a token-ring network 失效
标题翻译：令牌环网络的多端口LAN交换机
公开(公告)号：US06278695B1
公开(公告)日：2001-08-21
申请号：US08871164
申请日：1997-06-09
申请人： Kenneth J. Christensen , Frances E. Noel , Rudolf E. Rehquate , Thomas Stammely , Jerry Dagher , Beymer Bevill, Jr.
发明人： Kenneth J. Christensen , Frances E. Noel , Rudolf E. Rehquate , Thomas Stammely , Jerry Dagher , Beymer Bevill, Jr.
IPC分类号： H04L1228
CPC分类号： H04L12/44 , H04L12/42
摘要： A multi-port LAN switch is provided that enables attached network devices to both communicate directly and to insert into a token-ring network through an attached concentrator. Each port of the multi-port LAN switch has a first transformer, a second transformer, and a switching system. The first transformer has a first winding connected to a first connection of the port. The second transformer has a first winding connected to a second connection of the port. The switching system switches to a port mode or an adapter mode as a function of a mode signal transmitted to the port In the adapter mode, the switching system connects a second winding of the first transformer to a transmitter circuit in the port, and its connects a second winding of the second transformer to a receiver circuit in the port. In the port mode, the switching system connects the second winding of the first transformer to the receiver circuit in the port, and it connects the second winding of the second transformer to the transmitter circuit in the port. Each port of the multi-port LAN switch further includes a DC voltage source that is switchably connected to the first connection of the port through a first switch. Each port further includes a second switch that connects the second connection of the port to a DC return-path in a first position, and connects the second connection to the first connection when in a second position.
摘要翻译：提供了一种多端口LAN交换机，使连接的网络设备能够直接通信，并通过附加的集中器插入令牌环网络。多端口LAN交换机的每个端口具有第一变压器，第二变压器和开关系统。第一变压器具有连接到端口的第一连接的第一绕组。第二变压器具有连接到端口的第二连接的第一绕组。交换系统根据发送到端口的模式信号切换到端口模式或适配器模式在适配器模式下，开关系统将第一变压器的第二绕组连接到端口中的发送器电路，并且其连接第二变压器的第二绕组到端口中的接收器电路。在端口模式下，开关系统将第一变压器的第二绕组连接到端口中的接收器电路，并将第二变压器的第二绕组连接到端口中的发射器电路。多端口LAN交换机的每个端口还包括直流电压源，其通过第一开关可切换地连接到端口的第一连接。每个端口还包括第二开关，该第二开关将端口的第二连接连接到第一位置的直流回路，并且当处于第二位置时将第二连接连接到第一连接。

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