公开(公告)号：US4006955A

公开(公告)日：1977-02-08

申请号：US642967

申请日：1975-12-22

申请人： Melvin L. Johnson

发明人： Melvin L. Johnson

IPC分类号： H01R13/54

CPC分类号： H01R12/7005

摘要： A printed circuit card retainer formed of a unitary elongated ring element having an inwardly projecting tongue at one end and a pair of outwardly projecting hooked tines at the opposite end. Whereby in use the tongue is hooked over the edge of a printed circuit card while the tines are passed around a connector mounting bar onto which they are hooked.

摘要翻译： 由整体式细长环形元件形成的印刷电路卡保持器，其在一端具有向内突出的舌片和在相对端具有一对向外伸出的钩状齿。 在使用中，舌头被钩在印刷电路卡的边缘上，而尖齿绕着它们被钩住的连接器安装杆穿过。

公开(公告)号：US3996539A

公开(公告)日：1976-12-07

申请号：US644279

申请日：1975-12-24

申请人： Man Shek Lee

发明人： Man Shek Lee

IPC分类号： H03H11/46 ,  H03H7/44

CPC分类号： H03H11/46

摘要： The one-port network here includes a pair of terminals and a single differential-input operational amplifier having an output electrically connected through the series combination of a resistor R3 and capacitor C3 to a first input of the amplifier, through a resistor R4 to the second input of the amplifier, and through a resistor R7 to one terminal of the network. The first and second inputs to the amplifier are also electrically connected through an associated resistor R1 and capacitor C2 to the one network terminal. The other network terminal is connected to a ground reference potential and through resistors R5 and R6 to the first and second inputs, respectively, of the amplifier. With normalized values of network elements satisfying prescribed criteria, the impedance presented across the network terminals corresponds to that of the series combination of a super-inductor, an inductor, and a resistor. By proper selection of element values, the impedance simulated across the network port may be adjusted to correspond to that of a resistor alone or in series with an inductor, or these two elements individually in series with a super-inductor.

摘要翻译： 这里的单端口网络包括一对端子和单个差分输入运算放大器，其具有通过电阻器R3和电容器C3的串联组合电连接到放大器的第一输入端的输出端，通过电阻器R4至第二 输入放大器，并通过电阻R7连接到网络的一个终端。 放大器的第一和第二输入端也通过相关联的电阻器R1和电容器C2电连接到一个网络端子。 另一个网络终端分别连接到接地参考电位，并通过电阻R5和R6分别连接到放大器的第一和第二输入端。 通过满足规定标准的网络元件的归一化值，跨网络终端呈现的阻抗对应于超级电感器，电感器和电阻器的串联组合。 通过适当选择元件值，可以将网络端口模拟的阻抗调整为与电感器单独或与电感器串联的阻抗，或者这两个元件与超级电感器串联。

公开(公告)号：US3995120A

公开(公告)日：1976-11-30

申请号：US582321

申请日：1975-05-30

申请人： Alvin L. Pachynski, Jr.

发明人： Alvin L. Pachynski, Jr.

IPC分类号： H04J3/06 ,  H04J3/07 ,  H04J3/12

CPC分类号： H04J3/12 ,  H04J3/07 ,  H04J3/0685

摘要： A time-division multiplexing system wherein N parallel digital signals having an average bit rate of f.sub.1 are interleaved by a multiplexer to form a single composite line signal of bit rate f.sub.2, where f.sub.2 > NF.sub.1. Prior to multiplexing, signal gaps having a predetermined duration and having a fixed repetition rate are inserted into each of the N parallel signals. Adding gaps to each digital signal permits the bit rate between gaps to be increased to f.sub.2 /N, a submultiple of the composite line signal bit rate. The gap duration and their occurrence is such so as to maintain the average bit rate of each digital signal at f.sub.1. Each digital signal with the added gaps is then interleaved to form the composite line signal having the desired bit rate of f.sub.2. The interleaved gaps form empty time slots in the composite signal into which one or more signaling bits are added. Some of the added signaling bits carry framing information to enable the multiplexer and demultiplexer to maintain synchronism during signal transmission. Thus, a composite higher-rate digital line signal, consisting of interleaved information bits and signaling bits, forms the time-division multiplex signal suitable for transmission over a single digital transmission path. The N parallel digital signals are recovered at the demultiplexer by sequentially selecting each information bit associated with a particular digital signal.

摘要翻译： 具有平均比特率f1的N个并行数字信号的时分多路复用系统由多路复用器交织以形成比特率f2的单个复合线路信号，其中f2> NF1。 在复用之前，具有预定持续时间并具有固定重复率的信号间隙被插入到每个N个并行信号中。 向每个数字信号添加间隙允许间隙之间的比特率增加到f2 / N，复合线路信号比特率的倍数。 间隙持续时间和它们的出现使得每个数字信号的平均比特率保持在f1。 然后将具有添加的间隙的每个数字信号交织以形成具有期望的比特率f2的复合线路信号。 交错间隙形成复合信号中的空时隙，一个或多个信令比特被添加到该时隙中。 一些添加的信令位携带成帧信息，以使多路复用器和解复用器在信号传输期间保持同步。 因此，由交织的信息比特和信令比特组成的复合高速数字线路信号形成适合于通过单个数字传输路径传输的时分复用信号。 通过顺序选择与特定数字信号相关联的每个信息位，在解复用器上恢复N个并行数字信号。

公开(公告)号：US3995119A

公开(公告)日：1976-11-30

申请号：US582322

申请日：1975-05-30

申请人： Alvin L. Pachynski, Jr.

发明人： Alvin L. Pachynski, Jr.

IPC分类号： H04J3/07 ,  H04J3/12 ,  H04J3/06

CPC分类号： H04J3/07 ,  H04J3/12

摘要： Disclosed is a digital multiplexer which combines N parallel bit-synchronized digital signals, each of bit rate f.sub.1, into a single composite line signal of bit rate f.sub.2, where f.sub.2 > Nf.sub.1. Before the individual bits are interleaved, each digital signal is converted to a submultiple of the line frequency, f.sub.2. By inserting gaps having a predetermined duration and occurring at a fixed rate into each of the N digital signals, the bit rate f.sub.1 of each bit stream is increased to f.sub.2 /N. This is done without sampling any bit more than once. A multiplexer sequentially interleaves each bit from the N converted bit streams along with the gaps in each bit stream, forming the composite signal of bit rate f.sub.2. The interleaved gaps form empty time slots in the composite signal into which one or more signaling bits are added. Some of the added signaling bits carry framing information to lock the transmitter and receiver together. Thus, a composite higher-rate digital line signal consisting of interleaved information bits and signaling bits forms the time-division multiplex signal suitable for transmission over a single digital transmission path.

摘要翻译： 公开了一种数字多路复用器，其将N个并行位同步数字信号（每个比特率f1）组合成比特率f2的单个复合线路信号，其中f2> Nf1。 在各个比特被交织之前，每个数字信号被转换成线路频率f2的一个分数。 通过将具有预定持续时间并以固定速率出现的间隙插入到每个N个数字信号中，每个比特流的比特率f1增加到f2 / N。 这样做不需要多次采样任何位。 多路复用器顺序地将来自N个转换的比特流的每个比特以及每个比特流中的间隙进行交织，形成比特率f2的复合信号。 交错间隙形成复合信号中的空时隙，一个或多个信令比特被添加到该时隙中。 一些添加的信令位携带成帧信息以将发送器和接收器锁定在一起。 因此，由交错信息比特和信令比特组成的复合高速数字线路信号形成适合于通过单个数字传输路径进行传输的时分复用信号。

公开(公告)号：US3965305A

公开(公告)日：1976-06-22

申请号：US537292

申请日：1974-12-30

申请人： John Ng ,  Melvin A. Jacobs

发明人： John Ng ,  Melvin A. Jacobs

IPC分类号： H04Q3/54 ,  H04Q3/42

CPC分类号： H04Q3/54

摘要： In a communication switching system including a control unit for establishing connections through a switching matrix, the connections being established during a cycle of the control unit and the cycle being divided into a number of sequence states or sub-cycles which established logical functions are to be accomplished before advancing to the next sequence state, an arrangement for making the sequencing of the control unit permissive instead of absolutely controlled by a timer set for worst case operation. With the disclosed arrangement, advance to the next sequence state is permitted as soon as all of the logical functions are accomplished. The control unit also can advance to the next sequence state if the worst case operating time is exceeded, and with a peg count of the occurrence being made. On genuine trouble conditions, the control unit is not permitted to advance to the next sequence state, a trouble record is printed out, and the sequence state counter is reset to its idle state, with the connection being dropped.

摘要翻译： 在包括用于通过交换矩阵建立连接的控制单元的通信交换系统中，在控制单元的周期期间建立连接，并且将周期划分成若干个建立逻辑功能的序列状态或子周期将被设置为 在进行到下一个序列状态之前完成，用于使得控制单元的排序是允许的，而不是由针对最坏情况操作设置的定时器绝对地控制的布置。 利用所公开的布置，一旦完成所有的逻辑功能，就允许前进到下一个顺序状态。 如果超过最坏情况下的操作时间，并且发生的重叠计数，则控制单元还可以进入下一个顺序状态。 在真正的故障情况下，控制单元不允许前进到下一个序列状态，故障记录被打印出来，并且序列状态计数器被复位到其空闲状态，连接被丢弃。

公开(公告)号：US3946291A

公开(公告)日：1976-03-23

申请号：US520400

申请日：1974-11-04

申请人： Edward A. Marheine

发明人： Edward A. Marheine

IPC分类号： G11B15/18 ,  G11B15/22 ,  G11B15/43 ,  H02P7/74

CPC分类号： G11B15/43 ,  G11B15/18 ,  G11B15/22

摘要： Apparatus for remotely controlling the motor tape drive mechanism of an audio tape recorder or the like. In one embodiment, the apparatus comprises a plurality of semiconductors controlled by a low-level logic circuit and a diode switching network for selectively varying the current through the forward drive motor and the rewind motor of the mechanism to properly tension the tape between a take-up reel and a rewind reel and to differentially brake the motors when switching from a particular mode of operation to "stop" or in case of power failure, thereby preventing tape spillage.

摘要翻译： 用于远程控制音频磁带录音机等的电机带驱动机构的装置。 在一个实施例中，该装置包括由低级逻辑电路和二极管开关网络控制的多个半导体，用于选择性地改变通过正向驱动电机和机构的重绕电机的电流， 并且在从特定操作模式切换到“停止”或断电的情况下差动地制动电动机，从而防止磁带溢出。

公开(公告)号：US3941949A

公开(公告)日：1976-03-02

申请号：US446576

申请日：1974-02-27

申请人： Howard R. Miller ,  Leo J. Putchinski, Jr. ,  Kenneth W. Vanderlei

发明人： Howard R. Miller ,  Leo J. Putchinski, Jr. ,  Kenneth W. Vanderlei

IPC分类号： H04Q3/545 ,  H04M3/24

CPC分类号： H04Q3/54591

摘要： A method and apparatus for isolating malfunctions occurring in a communication switching system having a line switching network for establishing communications selectively between calling and called lines under the control of common equipment including a plurality of registers for storing temporarily call processing information received from the calling lines via a plurality of register junctors, a junctor switching network connecting selectively a pool of sending units and receiving units to the junctors, the common equipment including memory, includes establishing a connection between a register junctor and a sender-receiver unit for test purposes, connecting testing circuits to the register junctor via the line switching network, testing the register junctor circuits to determine whether or not they can extend a path from the line switching network to the junctor switching network, testing the sender-receiver unit by means of the testing circuits via the path between the junctor and the sender-receiver unit if the junctor circuit was found to operate properly, and thereafter establishing a new path between a selected different one of the register junctors and the same sender-receiver unit under test so that the new path can be checked for continuity if the sender-receiver unit under test was found to operate properly, whereby a malfunction can be isolated to either a register junctor, sender-receiver unit or the junctor network interconnecting them.

摘要翻译： 一种用于隔离在具有线路交换网络的通信交换系统中发生的故障的方法和装置，用于在公用设备的控制下选择性地建立呼叫线路和被叫线路之间的通信，包括用于存储从主叫线路接收到的临时呼叫处理信息的多个寄存器， 多个寄存器连接器，一个连接器交换网络，用于选择性地连接发送单元池和接收单元到该接口，该公共设备包括存储器，包括建立一个用于测试目的的寄存器接收器单元和发送器 - 接收器单元之间的连接，连接测试 通过线路交换网络向寄存器连接器发送电路，测试寄存器连接器电路以确定它们是否可以扩展从线路交换网络到终端交换网络的路径，通过测试电路通过测试电路测试发送者 - 接收者单元 主持人之间的路径 如果发现接合器电路被正确地操作，然后在所选择的不同的一个寄存器接收器和被测试的同一发送器 - 接收器单元之间建立新的路径，以便可以检查新的路径的连续性，如果 被发现的发送者 - 接收器单元被正确地操作，从而可以将寄存器连接器，发送器 - 接收器单元或连接它们的连接器网络的故障隔离。

公开(公告)号：US3936609A

公开(公告)日：1976-02-03

申请号：US442522

申请日：1974-02-14

申请人： Gary C. Waldeck

发明人： Gary C. Waldeck

IPC分类号： H04J3/06 ,  H04J3/14

CPC分类号： H04J3/0617 ,  H04J3/14

摘要： A time division multiplex system includes a status channel as well as a plurality of information channels and a frame synchronization channel in each frame. A submultiplexer combines a "winking" framing pulse with four different status signals to derive a four-state code. One state of the code contains a "winking" submultiplexer framing signal, and the other states transmit status information to control system alarm and restoral conditions.

摘要翻译： 时分复用系统包括每个帧中的状态信道以及多个信息信道和帧同步信道。 子多路复用器将“闪烁”成帧脉冲与四种不同的状态信号组合以得到四态码。 代码的一个状态包含“眨眼”的多路分解器成帧信号，其他状态传送状态信息以控制系统报警和恢复条件。

公开(公告)号：US4275272A

公开(公告)日：1981-06-23

申请号：US92409

申请日：1979-11-05

申请人： Michael F. Mennino, Jr. ,  Donald J. Coppin

发明人： Michael F. Mennino, Jr. ,  Donald J. Coppin

IPC分类号： H04M15/34 ,  H04M15/12

CPC分类号： H04M15/34

摘要： A remote time and charge system for use in conjunction with a telephone traffic service position system is shown. This system provides each hotel or motel with an automated print out of the duration of a particular call, the identity of the particular caller within the hotel or motel and the charges to be applied to the particular call. As a result, no attendant is required at each hotel or motel to monitor long distance calls and request time and charge information for each of them.

摘要翻译： 示出了与电话交通服务定位系统一起使用的远程时间和收费系统。 该系统为每个酒店或汽车旅馆提供在特定呼叫期间的自动打印，酒店或汽车旅馆内的特定呼叫者的身份以及应用于特定呼叫的费用。 因此，每家酒店或汽车旅馆都不需要任何服务员来监控长途电话，并要求每个电话的时间和费用信息。

公开(公告)号：US4255624A

公开(公告)日：1981-03-10

申请号：US97081

申请日：1979-11-23

申请人： Richard A. Walton ,  John Mocko, Jr.

发明人： Richard A. Walton ,  John Mocko, Jr.

IPC分类号： H04M3/32 ,  H04M3/22

CPC分类号： H04M3/323

摘要： The present invention is a call processing monitor circuit for dynamically verifying the operation of a telephone switching center. This system provides for continuously testing a telephone switching center's ability to process telephone traffic. This is accomplished by placing telephone calls one at a time from various network inlets to various network outlets in the switching center. For the detection of an alternate failure pattern, an output alarm signal is generated by the system.

摘要翻译： 本发明是用于动态地验证电话交换中心的操作的呼叫处理监视电路。 该系统提供连续测试电话交换中心处理电话流量的能力。 这是通过将电话呼叫从各种网络入口一次一个地发送到交换中心的各个网络出口来实现的。 为了检测备用故障模式，系统会产生输出报警信号。