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1. 发明授权

US4890102A Visual display for communication network monitoring and troubleshooting 失效
标题翻译：用于通讯网络监控和故障排除的视觉显示
公开(公告)号：US4890102A
公开(公告)日：1989-12-26
申请号：US054311
申请日：1987-05-26
申请人： Christopher J. Oliver
发明人： Christopher J. Oliver
IPC分类号： H04L12/26
CPC分类号： H04L43/00 , H04L12/2602
摘要： A communication network transceiver assembly for interfacing between a communication bus and a host system includes a transceiver circuit for coupling data signals to and from the communication bus, a housing for containing the transceiver circuit and several indicator LED's which indicate the operating status of the assembly. The indicator LED's are an integral part of the transceiver assembly and assist in troubleshooting and maintenance. The indicator LED's display the status of transmit and receive signals, collision presence, heartbeat test enable and power. Those LED's which indicate time varying digital signals are driven by interface circuits which include an asymmetrical difference amplifier for sensing the time varying signal, a pulse stretcher and an LED driver.
摘要翻译：用于在通信总线和主机系统之间接口的通信网络收发器组件包括用于将数据信号耦合到通信总线和从通信总线耦合的收发器电路，用于容纳收发器电路的壳体和指示组件的操作状态的若干指示器LED。指示灯是收发器组件的组成部分，有助于故障排除和维护。指示灯显示发送和接收信号的状态，碰撞存在，心跳测试使能和电源。指示时变数字信号的LED由接口电路驱动，该接口电路包括用于感测时变信号的不对称差分放大器，脉冲展宽器和LED驱动器。

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