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    Automatic power breaking circuits for communication equipments
    1.
    发明授权
    Automatic power breaking circuits for communication equipments 失效
    自动断电电路，用于通讯设备

    公开(公告)号：US5233645A

    公开(公告)日：1993-08-03

    申请号：US780365

    申请日：1991-10-22

    申请人： Gak J. Choi ,  Ho Y. Kim ,  Young I. Kim ,  Kyung H. No ,  Ki H. Kim

    发明人： Gak J. Choi ,  Ho Y. Kim ,  Young I. Kim ,  Kyung H. No ,  Ki H. Kim

    IPC分类号： H02H1/00 ,  H04B1/16 ,  H04B7/26 ,  H04M1/73

    CPC分类号： H04W52/0241 ,  Y02B60/50

    摘要： An automatic power breaking circuit for a communication equipment, for breaking automatically electric power in the communication equipment when the communication equipment does not perform transmission and reception for talk. The present circuit comprises a call processing tone detector 1 connected to a receiving stage of the communication equipment, for detecting a plurality of predetermined tones provided from a switch board of an exchange, a JK flip-flop 2 connected to said call processing tone detector 1, for receiving a source voltage, a talk terminal 4 for receiving said source voltage and being manually switched to an ON state by the user when transmission or reception is required, a D flip-flop 6 connected to said talk terminal 4, an AND gate 7 connected to output terminals of said JK flip-flop 2 and D flip-flop 6, and a transistor 8 connected to an output terminal of said AND gate 7w for switching power being supplied to a transmitting stage of the communication equipment. In accordance with the present invention, an unnecessary loss of the electric power in the communication equipment can be prevented, so that the life span of a charging battery contained therein and the portable communication period of time can be lengthened, and the power supply can be miniaturized.

    摘要翻译： 一种用于通信设备的自动断电电路，用于当通信设备不进行通话的发送和接收时，在通信设备中自动断电。 本电路包括连接到通信设备的接收级的呼叫处理音检测器1，用于检测从交换机的交换板提供的多个预定音调;连接到所述呼叫处理音检测器1的JK触发器2 用于接收源电压的通话终端4，用于接收所述源电压并且在需要发送或接收时由用户手动切换到ON状态的通话终端4，连接到所述通话终端4的D触发器6，AND门 7连接到所述JK触发器2和D触发器6的输出端子，以及晶体管8，其连接到所述与门7w的输出端子，用于切换供给到通信设备的发送级的电力。 根据本发明，可以防止通信设备中的电力的不必要的损失，使得其中容纳的充电电池的使用寿命和便携通信时间段可以被延长，并且电源可以是 小型化。

    Simultaneous optical compression and decompression apparatus
    3.
    发明授权
    Simultaneous optical compression and decompression apparatus 失效
    同时光学压缩和减压装置

    公开(公告)号：US5574586A

    公开(公告)日：1996-11-12

    申请号：US346919

    申请日：1994-11-23

    申请人： Kwang Uk Chu ,  Byeong H. Kim ,  Seo Y. Shin ,  Ki H. Kim ,  Yong h. Won

    发明人： Kwang Uk Chu ,  Byeong H. Kim ,  Seo Y. Shin ,  Ki H. Kim ,  Yong h. Won

    IPC分类号： H04Q11/00 ,  H04J3/00 ,  H04J14/00 ,  H04J14/02 ,  H04J14/08 ,  H04B10/00

    CPC分类号： H04J14/083

    摘要： A simultaneous optical compression and decompression apparatus having a simple symmetrical arrangement including a plurality of optical splitting/combining units capable of achieving simultaneous splitting and combining of optical signals in opposite directions, a plurality of optical delay units each arranged between adjacent ones of the optical splitting/combining units and adapted to delay the time taken for an optical signal to pass therethrough in each of opposite directions by a predetermined time, so as to reproduce the optical signal in accordance with a predetermined rule. The apparatus also includes a pair of optical isolation units respectively connected to opposite end-side ones of the optical splitting/combining units, each of the optical isolation units being adapted to allow an optical signal to pass therethrough in one direction; a pair of optical switching units respectively connected to opposite end-side ones of the optical splitting/combining units and adapted to switch optical signals output from the optical splitting/combining units in response to control signals, so as to allow predetermined optical signals to pass therethrough; and a pair of control units respectively connected to the optical switching units and adapted to apply the control signals to the optical switching units.

    摘要翻译： 一种具有简单对称布置的同时光学压缩和解压缩装置，包括能够实现相反方向上的光信号的同时分离和组合的多个光分裂/组合单元，多个光学延迟单元，每个光学延迟单元布置在相邻的光学分割 /组合单元，并且适于将每个相反方向上的光信号通过的时间延迟预定时间，以便根据预定规则再现光信号。 该装置还包括一对光隔离单元，其分别连接到光分路/组合单元的相对端侧光隔离单元，每个光隔离单元适于允许光信号在一个方向上通过; 一对光开关单元，分别连接到光分路/组合单元的相对端侧，并且适于响应于控制信号切换从光分路/组合单元输出的光信号，以便允许预定的光信号通过 通过 以及一对控制单元，其分别连接到所述光开关单元并且适于将所述控制信号施加到所述光开关单元。