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    • 87. 发明授权
    • Methods for bi-directional signaling
    • 双向信令的方法
    • US06801099B2
    • 2004-10-05
    • US10621146
    • 2003-07-16
    • Donald C. Stark
    • Donald C. Stark
    • G01R3126
    • G01R31/2607
    • Improved methods and apparatuses are provided for conducting bi-directional signaling and testing. The outputs of at least two driver circuits are connected to a resistive network. The output signals from the driver circuits are combined through the resistive network to produce a resultant signal that is an attenuated version of at least one of the output signals. The resistive network and the driver circuits are configured such that the resultant signal is provided to an output node of the resistive network but not to an input node of the resistive network. An input/output node of an external circuit is connected to the input node of the resistive network, wherein the external circuit is configured to receive the resultant signal and output an external signal. An input node of a receiver circuit is connected to the output node of the resistive network. The resultant signal is then simultaneously provided to the external circuit and the external signal to the receiver circuit, bi-directionally through the resistive network.
    • 提供改进的方法和装置用于进行双向信令和测试。 至少两个驱动电路的输出连接到电阻网络。 来自驱动器电路的输出信号通过电阻网络组合以产生作为至少一个输出信号的衰减版本的合成信号。 电阻网络和驱动器电路被配置为使得所得到的信号被提供给电阻网络的输出节点而不是电阻网络的输入节点。 外部电路的输入/输出节点连接到电阻网络的输入节点,其中外部电路被配置为接收所得到的信号并输出​​外部信号。 接收机电路的输入节点连接到电阻网络的输出节点。 结果信号然后同时被提供给外部电路和外部信号到接收器电路,双向地通过电阻网络。
    • 89. 发明授权
    • Methods and apparatus for bi-directional signaling
    • US06617871B2
    • 2003-09-09
    • US09902278
    • 2001-07-09
    • Donald C. Stark
    • Donald C. Stark
    • G01R3126
    • G01R31/2607
    • Improved methods and apparatuses are provided for conducting bi-directional signaling and testing. The outputs of at least two driver circuits are connected to a resistive network. The output signals from the driver circuits are combined through the resistive network to produce a resultant signal that is an attenuated version of at least one of the output signals. The resistive network and the driver circuits are configured such that the resultant signal is provided to an output node of the resistive network but not to an input node of the resistive network. An input/output node of an external circuit is connected to the input node of the resistive network, wherein the external circuit is configured to receive the resultant signal and output an external signal. An input node of a receiver circuit is connected to the output node of the resistive network. The resultant signal is then simultaneously provided to the external circuit and the external signal to the receiver circuit, bi-directionally through the resistive network.