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热词
    • 3. 发明授权
    • System for detecting the transmission direction of a signal on a two-way
transmission line
    • 用于检测双向传输线上的信号的传输方向的系统
    • US3974401A
    • 1976-08-10
    • US431980
    • 1974-01-09
    • Hisashi Eguchi
    • Hisashi Eguchi
    • H04M1/654H04M1/82H03K17/00
    • H04M1/82H04M1/654
    • A system for detecting the transmission direction of a signal on a two-say transmission line, in which a switch is inserted in the two-way transmission line while a signal detector is connected to the two-way transmission line at one side of the switch. Two signal detectors may be connected to the two-way transmission line at both sides of the switch respectively. If the switch has two selected contacts, the two signal detectors are connected to the selected contacts respectively. The switch is switched in response to the output of the signal detector or the outputs of the two signal detectors. The transmission direction of the signal on the two-way transmission line is detected in accordance with the state of the signal detector and the states of the two signal detector after the switching of the switch.
    • 一种用于检测双向传输线路上的信号的传输方向的系统,其中开关插入双向传输线路中,同时信号检测器连接到开关一侧的双向传输线路 。 两个信号检测器可以分别连接到开关两侧的双向传输线。 如果开关具有两个选择的触点,则两个信号检测器分别连接到所选择的触点。 响应于信号检测器的输出或两个信号检测器的输出来切换开关。 根据信号检测器的状态和开关切换后的两个信号检测器的状态来检测双向传输线上的信号的传输方向。