Pulse analyzer
    61.
    发明授权
    Pulse analyzer 失效
    脉冲分析仪

    公开(公告)号:US3678252A

    公开(公告)日:1972-07-18

    申请号:US3678252D

    申请日:1970-07-28

    Inventor: PAYNE ROY DAVID

    CPC classification number: G04F10/04 G06F7/62

    Abstract: A system for taking the difference between the duration of a pulse, and the time between pulses including a reversible binary counter to count up during one interval and to count down during a succeeding interval. The count at the end of the succeeding interval is transferred to a binary digital storage register by a set of gates. The output of the storage register is then impressed upon an indicator.

    Abstract translation: 用于获取脉冲的持续时间与包括可逆二进制计数器的脉冲之间的时间之间的时间的系统在一个间隔期间进行计数并在随后的间隔期间倒计数。 在后续间隔结束时的计数通过一组门传送到二进制数字存储寄存器。 然后将存储寄存器的输出印在指示器上。

    Tape tension checking device for cassette recorders
    62.
    发明授权
    Tape tension checking device for cassette recorders 失效
    TAPE张力检查仪器记录仪

    公开(公告)号:US3677496A

    公开(公告)日:1972-07-18

    申请号:US3677496D

    申请日:1970-04-15

    Inventor: APITZ SIEGFRIED

    CPC classification number: G11B15/43 G01L5/04

    Abstract: This invention relates to a tape tension checking device for cassette type tape recorders. The torques to be measured are simulated by limiting-force clutches which are accommodated in a tape cassette (cartridge). From either the rotation of the simulated tape spools, or the standstill thereof it can be immediately determined whether there exists the necessary tape tension or torque respectively.

    Abstract translation: 本发明涉及盒式磁带录像机的带张力检测装置。 要测量的转矩由容纳在带盒(盒式磁带)中的限制力离合器模拟。 通过模拟磁带卷轴的旋转或其停顿,可以立即确定是否分别存在必需的胶带张力或扭矩。

    Time division multiplex switches
    63.
    发明授权
    Time division multiplex switches 失效
    时分多路开关

    公开(公告)号:US3673336A

    公开(公告)日:1972-06-27

    申请号:US3673336D

    申请日:1970-10-12

    CPC classification number: H04Q11/04

    Abstract: A time division multiplex (TDM) switch is provided which serves a number of highways. Individual subscriber loops are connectd to the TDM switch in place of some of the TDM channels on the highways. This enables the ratio of TDM channels to individual loops to be altered conveniently.

    Abstract translation: 提供了用于多条高速公路的时分复用(TDM)开关。 单个用户环路连接到TDM交换机,代替高速公路上的一些TDM信道。 这样可以方便地改变TDM信道与各个环路的比例。

    Arrangement for the recognition of loop closure in subscriber stations having semiconductor amplifiers fed via the connecting trunk
    64.
    发明授权
    Arrangement for the recognition of loop closure in subscriber stations having semiconductor amplifiers fed via the connecting trunk 失效
    用于识别具有半导体放大器的订户站中的环路闭合的安排通过连接TRUNK

    公开(公告)号:US3671679A

    公开(公告)日:1972-06-20

    申请号:US3671679D

    申请日:1969-11-18

    CPC classification number: H04M19/08

    Abstract: An arrangement is provided for the recognition of call initiating loop closure in telephone subscriber stations employing semi-conductor amplifiers fed over a connecting trunk. On loop-closure, there is first created a virtual short circuit in the supervisory current direction. After recognition, the exchange switches over to the feed current direction for the amplifiers in the subscriber station. In this way the loop closure criterion is made independent of the d-c resistance of the amplifiers.

    Abstract translation: 提供了一种用于在通过连接中继器馈送的半导体放大器的电话用户站中识别呼叫发起环路闭合的装置。 在闭环时,首先在监控电流方向创建虚拟短路。 在识别之后,交换机切换到用户站中的放大器的馈电电流方向。 以这种方式,使闭环标准与放大器的d-c电阻无关。

    Ciphering method and apparatus
    65.
    发明授权
    Ciphering method and apparatus 失效
    加油方法和装置

    公开(公告)号:US3670104A

    公开(公告)日:1972-06-13

    申请号:US3670104D

    申请日:1970-12-03

    CPC classification number: G09C3/10 H04L2209/12

    Abstract: The present invention is related to a method and apparatus to avoid overprinting at the end of teleprinter lines on pageprinting teleprinters when a coding signal is used for enciphering of teleprinter messages. This is accomplished by enciphering the first of three procedure characters (two CARRIAGE RETURN and one LINE FEED) in the normal manner while the next two characters are not enciphered. At the receiving end, the first CARRIAGE RETURN is retrieved as normal, and the next two characters are passed in plain text without deciphering.

    Abstract translation: 本发明涉及一种方法和装置,用于当编码信号用于加密电传打印机消息时,避免在打印传真机上的电传打印机末端的套印。 这是通过以正常方式加密三个过程字符中的第一个(两个运行返回和一个行进给)而在未加密的下两个字符的情况下完成的。 在接收端,正常检索第一个CARRIAGE RETURN,接下来的两个字符以纯文本格式传递而不进行解密。

    Electronic converter
    67.
    发明授权
    Electronic converter 失效
    电子转换器

    公开(公告)号:US3665290A

    公开(公告)日:1972-05-23

    申请号:US3665290D

    申请日:1971-04-28

    Inventor: TROK BENJAMIN

    CPC classification number: G01R19/0023 G01R19/22 G01R19/225

    Abstract: A circuit including an amplifier and a transistor for rectification including a feedback path to maintain the output voltage proportional to the input voltage. The amplifier also may include a feedback resistor to maintain the transistor at cut-off in the absence of an AC input signal.

    Abstract translation: 1,247,766。 晶体管检测电路。 国际标准电气有限公司1969年11月12日[1968年11月15日],第55440/69号。 标题H3T。 [也在G1部分]用于产生与交流电压的幅度成比例的单向输出的电路包括具有电阻反馈回路M1的运算放大器71,连接到放大器的输出的整流装置和第二反馈回路M2。 整流装置包括晶体管T2的基极集电极二极管,第二反馈环连接在该晶体管的发射极和放大器输入端之间。 第二反馈回路允许晶体管T2的偏置改变,使得整流电压与输入电压成正比并且稳定。 该电路具有低阈值和高稳定性。 负反馈M1使直流工作点稳定到关闭晶体管T2的电平。 在输入的正半周期期间,晶体管T1底部和T2保持切断。 在负半周期T2中导通,负反馈电路M2用于将T2收集器的输出电压相对于I处的输入保持线性,T2中的晶体管电流基本上等于T1的输入电流。 输出端的整流交流电压可以由电容器滤波。 如果这与输出负载电阻RO并联,则获得与供电电压的整流平均值成比例的直流电压,而如果连接在T2的集电极和发射极之间,则获得与提供的峰值电压成比例的直流电压。

    Interface circuits for a pcm time multiplex switching center
    68.
    发明授权
    Interface circuits for a pcm time multiplex switching center 失效
    PCM时间多路切换中心的接口电路

    公开(公告)号:US3657483A

    公开(公告)日:1972-04-18

    申请号:US3657483D

    申请日:1970-04-22

    CPC classification number: H04Q11/0407

    Abstract: In a switching center controlled by two computers operating, for example, in the load-sharing mode, each of said computers has an access to each peripherical unit through an interface circuit. This interface has two functions: Retiming between the computer clock and the PCM clock, Preselection of the address concerned, in a peripheral unit, by an instruction sent by the computer and transmission of the data contained in said instruction.

    Abstract translation: 在由例如在负载共享模式中操作的两台计算机控制的交换中心中,每个所述计算机通过接口电路访问每个外围单元。 该界面有两个功能:

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