Impulse noise suppression circuit
    2.
    发明授权
    Impulse noise suppression circuit 失效
    脉冲噪声抑制电路

    公开(公告)号:US4006307A

    公开(公告)日:1977-02-01

    申请号:US594192

    申请日:1975-07-09

    IPC分类号: H04M3/18 H04Q3/00 H03K17/00

    CPC分类号: H04Q3/00 H04M3/18

    摘要: A circuit for reducing transmitted and radiated impulse noise which is generated by opening and closing connections between a transmission path and a source of potential. In the case of closing such a connection a path is connected to a substantially zero potential and the potential is increased to the operating potential over a preset period of time. In the case of opening such a connection the connected potential is decreased to substantially zero over a preset period of time and the path is opened. A potential control circuit is connected between the battery side of the transmission path and the source of potential and the control thereof is coordinated with the connecting means to achieve the described sequences.

    摘要翻译: 用于减少通过打开和关闭传输路径和电位源之间的连接而产生的传输和辐射脉冲噪声的电路。 在关闭这种连接的情况下,路径连接到基本上为零的电位,并且在预设的时间段内将电位增加到工作电位。 在打开这种连接的情况下,在预设的时间段内将连接的电位降低到基本为零,并且路径被打开。 电位控制电路连接在传输路径的电池侧和电位之间,并且其控制与连接装置协调以实现所描述的顺序。

    Method of transmitting binary information using 3 signals per time slot
    3.
    发明授权
    Method of transmitting binary information using 3 signals per time slot 失效
    每个时隙使用3个信号发送二进制信息的方法

    公开(公告)号:US4253185A

    公开(公告)日:1981-02-24

    申请号:US57179

    申请日:1979-07-13

    申请人: Daniel Danielsen

    发明人: Daniel Danielsen

    IPC分类号: H04L1/00 H04L25/49

    摘要: A self-synchronizing transmission loop consists of a transceiver, a transponder, a data link for transmitting a group of eight binary numbers from the transceiver to the transponder, and a data link for transmitting a group of eight binary numbers from the transponder to the transceiver. Each of the transceiver and the transponder uses a bipolar return-to-zero direct-current signal format where each binary number to be transmitted has its own transmission time slot divided into three substantially equal successive time segments T1, T2 and T3. Time segment T1 provides a change from zero level to a single unit level signal of positive polarity (+1) for binary 1 and of negative polarity (-1) for binary 0, time segment T2 provides a reversal of the single unit level signal of time segment T1, and time segment T3 provides a change back to the zero level of signal. During time segment T3 for the last transmission time slot, the change of signal level is of the same polarity as during time segment T1 of that last time slot. After the start of transmission, each transmission by either the transceiver or the transponder of a successive time segment signal level change is initiated only upon receipt from the other of a corresponding time segment signal change.

    摘要翻译: 自同步传输环路由收发器,应答器,用于从收发器发送到应答器的八个二进制数字组的数据链路,以及用于将来自转发器的一组八个二进制数字发送到收发器的数据链路 。 收发器和应答器中的每一个使用双极返回零直流信号格式,其中要发送的每个二进制数具有其自己的传输时隙,其被划分为三个基本相等的连续时间段T1,T2和T3。 时间段T1提供从零电平到二进制1的正极性(+1)和二进制0的负极性(-1)的单个单位电平信号的变化,时间段T2提供单个电平信号的单个单位电平信号的反转 时间段T1和时间段T3提供回到零电平的信号。 在最后一个传输时隙的时段T3期间,信号电平的改变与最后一个时隙的时间段T1具有相同的极性。 在传输开始之后,由接收机或应答器对连续时间段信号电平变化进行的每次发送仅在从对应的时间段信号变化的另一个接收到时才发起。