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1.发明授权
公开(公告)号：US4285572A
公开(公告)日：1981-08-25
申请号：US134366
申请日：1980-03-27
CPC分类号： G02B6/4292
摘要： An optical cable connector includes a fiber connector plug and a mating connector receptacle.The plug, which receives an assembly including sheath and optical fiber, includes a generally cylindrical optical pin, a copression spring, a spring retainer nut, and a pin housing.The mating connector receptacle includes a housing, a circular shim, a photodiode housing assembly, and a retainer cap.
摘要翻译： 光缆连接器包括光纤连接器插头和配合连接器插座。 接收包括护套和光纤的组件的插头包括大致圆柱形的光学销，压缩弹簧，弹簧保持螺母和销壳体。 配合连接器插座包括壳体，圆形垫片，光电二极管壳体组件和保持盖。
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公开(公告)号：US3999084A
公开(公告)日：1976-12-21
申请号：US598610
申请日：1975-07-24
申请人： Richard A. Beaudette
发明人： Richard A. Beaudette
摘要： A limiting amplifier includes an operational amplifier with three feedback loops. One loop controls the gain of the amplifier when the output signal is between the upper and lower limit. Each of the other two feedback loops comprises the high gain summing amplifier in series with a diode, each summing amplifier comparing the output signal with one of the limit signals. The summing amplifiers insure hard limiting when the output signal tends to exceed the upper or lower limit.
摘要翻译： 限幅放大器包括具有三个反馈回路的运算放大器。 当输出信号在上限和下限之间时，一个环路控制放大器的增益。 其他两个反馈回路中的每一个包括与二极管串联的高增益求和放大器，每个求和放大器将输出信号与限制信号之一进行比较。 当输出信号趋于超过上限或下限时，求和放大器确保硬限制。
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公开(公告)号：US4184056A
公开(公告)日：1980-01-15
申请号：US948850
申请日：1978-10-05
CPC分类号： H04B10/0771 , H04B10/07 , H04B17/404
摘要： A fault locating system for optical telecommunications includes a central office and means associated therewith for generating a tone signal. Analog to digital conversion means convert the tone signal to a digital signal. Cable driving means, receiving the digital signal, provide a driving output to an optical cable. The optical cable output is coupled to an input of a repeater which reforms the received digital signal before retransmission thereof. The repeater is coupled to an input of a filter which passes signals at a frequency f.sub.1. The output of the first repeater is coupled to an input of a second optical cable. The output of the second optical cable is coupled to an input of a second repeater which reforms the received digital signal before retransmission thereof. The second repeater is coupled to an input of a second filter which passes signals at a frequency f.sub.2. The output of the (n-1)st repeater is coupled to the input of an nth optical cable. The output of the nth optical cable is coupled to an input of an nth repeater which reforms the received digital signal before retransmission thereof. The nth repeater is coupled to an input of an nth filter which passes signals at a frequency f.sub.n ( n is an integer greater than 1). A pair of wires couples the outputs of all the filters to the central office. The analog to digital conversion means can include a delta modulator which can include a comparator having a first input adapted to receive a tone signal. It can further include a quantizer having a first input coupled to the comparator output, a second input adapted to receive clock pulses, a first output for providing a digital output therefrom and a second output coupled to an input of an audio filter whose output is coupled to the comparator second input.
摘要翻译： 用于光通信的故障定位系统包括中心局和与其相关联的装置，用于产生音调信号。 模数转换装置将音调信号转换为数字信号。 接收数字信号的电缆驱动装置向光缆提供驱动输出。 光缆输出耦合到中继器的输入，该中继器在其重传之前重新接收数字信号。 中继器耦合到以频率f1传递信号的滤波器的输入。 第一中继器的输出耦合到第二光缆的输入端。 第二光缆的输出耦合到第二中继器的输入，该第二中继器在重传之前重新接收数字信号。 第二中继器耦合到以频率f2传递信号的第二滤波器的输入。 第（n-1）个中继器的输出耦合到第n个光缆的输入端。 第n个光缆的输出耦合到第n个中继器的输入端，该第n个中继器的重传之前重新接收数字信号。 第n个中继器耦合到以频率fn（n是大于1的整数）传递信号的第n个滤波器的输入。 一对电线将所有滤波器的输出耦合到中心局。 模数转换装置可以包括增量调制器，其可以包括具有适于接收音调信号的第一输入的比较器。 它还可以包括量化器，其具有耦合到比较器输出端的第一输入端，适于接收时钟脉冲的第二输入端，用于提供数字输出的第一输出端和耦合到音频滤波器输入的第二输出端，输出端耦合 到比较器第二输入。
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