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1. 发明授权

US5544197A Cutover apparatus and methods for switching a signal between two transmission media 失效
标题翻译：切换装置和用于在两个传输介质之间切换信号的方法
公开(公告)号：US5544197A
公开(公告)日：1996-08-06
申请号：US224048
申请日：1994-04-07
申请人： Carl J. Baumgaertner , Robert M. McKaughan
发明人： Carl J. Baumgaertner , Robert M. McKaughan
IPC分类号： G06F11/20 , H04L1/22 , H01P5/00
CPC分类号： H04L1/22
摘要： A system and methods are provided for switching a signal from a first transmission media having a characteristic impedance to a second transmission media. The system includes a driver for driving a signal, the driver having a driver input having a high impedance relative to a characteristic impedance of the first transmission media and the driver having a driver output having an impedance equal to the characteristic impedance of the first transmission media. A first switch couples the driver output either to the first transmission media or to the second transmission media and couples a signal from the first transmission media, which is coupled to the driver input, either to the first transmission media or to the second transmission media. A first switch controller controls the first switch to either simultaneously couple the driver output to the first transmission media and the signal from the first transmission media coupled to the driver input to the second transmission media or simultaneously coupling the driver output to the second transmission media and the signal from the first transmission media coupled to the driver input to the first transmission media. A terminator having an impedance equal to the characteristic impedance of the first transmission media for terminating a signal from either the first or the second transmission media is switched by a second switch to terminate either the first or second transmission media.
摘要翻译：提供了一种用于将具有特征阻抗的第一传输介质的信号切换到第二传输介质的系统和方法。该系统包括用于驱动信号的驱动器，该驱动器具有相对于第一传输介质的特性阻抗具有高阻抗的驱动器输入，并且驱动器具有驱动器输出，该驱动器输出的阻抗等于第一传输介质的特性阻抗。第一开关将驱动器输出耦合到第一传输介质或第二传输介质，并将耦合到驱动器输入的第一传输介质的信号耦合到第一传输介质或第二传输介质。第一开关控制器控制第一开关以同时将驱动器输出耦合到第一传输介质和耦合到驱动器输入到第二传输介质的第一传输介质的信号，或者同时将驱动器输出耦合到第二传输介质，以及耦合到驱动器的第一传输介质的信号输入到第一传输介质。具有等于第一传输介质的特性阻抗的阻抗的端接器用于终止来自第一或第二传输介质的信号，由第二开关切换以终止第一或第二传输介质。

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