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公开(公告)号：US4240042A
公开(公告)日：1980-12-16
申请号：US027237
申请日：1979-04-05
申请人： Thomas J. Robe
发明人： Thomas J. Robe
CPC分类号： H03F1/083
摘要： An amplifier stage is disclosed having junction capacitors for by-passing high frequency signals without introducing substantial signal nonlinearities. A pair of similar serially connected diodes are reverse biased between the amplifier supply potentials. The mid-point connection of the diodes is connected to the amplifier node to be by-passed paralleling the junction capacitances of the diodes with respect to a-c potential excursions. Typical diode capacitance variations resulting from changes in the reverse bias potential across a pn junction is minimized by this arrangement.
摘要翻译： 公开了具有用于旁路高频信号的结电容器的放大器级，而不引入实质的信号非线性。 一对类似的串联二极管在放大器电源电位之间被反向偏置。 二极管的中点连接连接到放大器节点，以相对于a-c电位偏移平行地与二极管的结电容并联。 通过这种布置，通过pn结上的反向偏置电位的变化引起的典型的二极管电容变化被最小化。
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公开(公告)号：US4819226A
公开(公告)日：1989-04-04
申请号：US118898
申请日：1987-11-10
CPC分类号： H04J3/1682 , H04J3/247
摘要： A framer circuit which may be implemented as a single chip is disclosed. The framer circuit performs a number of functions in a DTDM network including generating trains of empty DTDM frames, enabling the writing of data packets into specific DTDM frames and the examination of header data in specific DTDM frames to generate signals for the control of peripheral circuits. The framer circuit comprises an input serial/parallel converter, a frame detection circuit, an output parallel/serial converter and a control unit comprising one or more finite state machines for generating proper control signals such as read and write strobes for data insertion and extraction.
摘要翻译： 可以实现为单个芯片的成帧器电路被公开。 成帧器电路在DTDM网络中执行多个功能，包括生成空DTDM帧的列，使得能够将数据分组写入特定的DTDM帧中，并且检查特定DTDM帧中的报头数据以产生用于外围电路控制的信号。 成帧器电路包括输入串行/并行转换器，帧检测电路，输出并行/串行转换器和包括一个或多个有限状态机的控制单元，用于产生用于数据插入和提取的适当的控制信号，例如读和写选通。
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公开(公告)号：US4644437A
公开(公告)日：1987-02-17
申请号：US794166
申请日：1985-11-01
申请人： Thomas J. Robe
发明人： Thomas J. Robe
摘要： An overvoltage protection circuit for communications systems for protecting equipment from power crosses on electric utility lines. A timed latch circuit is used to activate a plurality of steering SCR's which crowbar the overvoltage. The utilization of a latch circuit to activate the steering arrangement, instead of the conventional technique of using actual overvoltage line current, allows smaller devices to be used, thus reducing both circuit size and circuit power dissipation.
摘要翻译： 用于保护设备免受电力线上电力交叉的通信系统的过电压保护电路。 定时锁存电路用于激活撬开过电压的多个转向SCR。 使用闩锁电路来激活转向装置，而不是使用实际过电压线路电流的常规技术，允许使用更小的器件，从而减小电路尺寸和电路功率耗散。
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公开(公告)号：US4074205A
公开(公告)日：1978-02-14
申请号：US775863
申请日：1977-03-09
申请人： Thomas J. Robe
发明人： Thomas J. Robe
IPC分类号： H03F3/45
CPC分类号： H03F3/45071
摘要： Each half of a differential-input amplifier stage has an input terminal connected to the emitter electrode of a transistor. Resistances are provided for sensing the flow of current through the principal conduction path of each transistor. Output signal current for the stage is taken from the collector of at least one of the transistors and applied to the input of a following one of a cascade connection of amplifier stages. Voltage comparator means sense the drop in potential across one of the resistances caused by reduction of current in one half of the diffferential-input amplifier to increase the current available to the other half. This increases the output signal current available to charge or to discharge capacitance in the stage(s) cascaded after the diffferential-input amplifier, increasing the slew rate of the cascade.
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公开(公告)号：US4151484A
公开(公告)日：1979-04-24
申请号：US878999
申请日：1978-02-17
申请人： Thomas J. Robe
发明人： Thomas J. Robe
CPC分类号： H03F3/45094 , H03F1/22 , H03F3/45089 , H03F3/45587 , H03F2203/45096 , H03F2203/45702
摘要： An amplifier transistor has its base-to-collector voltage maintained substantially zero, and its collector-base junction has in inverse-parallel connection therewith an auxiliary semiconductor junction exposed to the same transient ionizing radiation environment. Photo-currents generated in the collector-base junction of the amplifier transistor responsive to transient ionizing radiation are counteracted by the photo-currents concurrently generated in the auxiliary semiconductor junction, so amplification can continue without being unduly hampered by such radiation.
摘要翻译： 放大器晶体管的基极到集电极电压保持基本上为零，并且其集电极 - 基极结与反向并联连接，暴露于相同的瞬态电离辐射环境的辅助半导体结。 响应于瞬态电离辐射而在放大器晶体管的集电极 - 基极结中产生的光电流由在辅助半导体结中同时产生的光电流抵消，因此放大可以继续而不会受到这种辐射的不适当的阻碍。
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公开(公告)号：US4151483A
公开(公告)日：1979-04-24
申请号：US878993
申请日：1978-02-17
申请人： Thomas J. Robe
发明人： Thomas J. Robe
CPC分类号： H03F3/50 , H03F3/45089 , H03F3/45094
摘要： The transient photo-currents generated in the collector-base junction of an amplifier transistor responsive to transient ionizing radiation are counteracted by those similarly generated in an auxiliary p-n semiconductor junction in inverse-parallel connection with the emitter base junction of the amplifier transistor. To provide more perfect counteraction of these photo-currents, this auxiliary semiconductor junction, operated in reverse-bias, is matched in characteristics with the collector-base junction of the amplifier transistor, and the base-to-collector potential of the amplifier transistor is arranged to be substantially the same as the reverse-bias potential across the auxiliary semiconductor junction.
摘要翻译： 响应于瞬态电离辐射的放大器晶体管的集电极 - 基极结中产生的瞬态光电流在与放大器晶体管的发射极基极并联连接的辅助p-n半导体结中类似地产生的那些相反。 为了提供这些光电流的更完美的对抗，以反向偏置工作的辅助半导体结与放大器晶体管的集电极 - 基极结的特性相匹配，放大器晶体管的基极 - 集电极电位为 被布置成与跨越辅助半导体结的反向偏置电位基本相同。
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公开(公告)号：US4151482A
公开(公告)日：1979-04-24
申请号：US878883
申请日：1978-02-17
申请人： Thomas J. Robe
发明人： Thomas J. Robe
CPC分类号： H03F3/45094 , H03F1/22
摘要： A folded-cascode amplifier conventionally comprises an "input" transistor of a first conductivity type receiving input signals at its base electrode, an "output" transistor of a second conductivity type, complementary to the first, connected in common-base amplifier configuration with its base electrode connected to receive fixed bias potential, and a current source supplying the combined "input" transistor collector current and "output" transistor emitter current to an interconnection between the "input" transistor collector electrode and "output" transistor emitter electrode. In the folded-cascode amplifiers herein disclosed the base electrode of the "output" transistor has the input-signal-responsive emitter potential of the "input" transistor applied to it.
摘要翻译： 折叠共源共栅放大器通常包括在其基极处接收输入信号的第一导电类型的“输入”晶体管，第二导电类型的“输出”晶体管，与第一导通类型的第一连接的共基极放大器配置互补 基极连接以接收固定偏置电位，以及电流源，将组合的“输入”晶体管集电极电流和“输出”晶体管发射极电流提供给“输入”晶体管集电极和“输出”晶体管发射极之间的互连。 在本文公开的折叠共源共栅放大器中，“输出”晶体管的基极具有施加到其的“输入”晶体管的输入信号响应发射极电位。
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公开(公告)号：US06625270B1
公开(公告)日：2003-09-23
申请号：US09392403
申请日：1999-09-09
申请人： Thomas C. Banwell , Ariel Dori , Keku M. Mistry , Thomas J. Robe
发明人： Thomas C. Banwell , Ariel Dori , Keku M. Mistry , Thomas J. Robe
IPC分类号： H04M342
摘要： A method and system for restricting telephone access to a predetermined set of telephone numbers. The method includes comparing the output of a caller ID signal decoder to telephone numbers stored in memory and allowing the telephone call to be completed if there is match between the calling party's number and a number stored in memory. The system consists of connection circuitry to which is connected a caller ID decoder, a number comparator, and an off hook detector. These components interact to restricts calls to only those stored in the number comparator.
摘要翻译： 一种用于限制电话接入预定的一组电话号码的方法和系统。 该方法包括：将呼叫者ID信号解码器的输出与存储在存储器中的电话号码进行比较，并且如果主叫方的号码和存储在存储器中的号码之间存在匹配，则允许完成电话呼叫。 该系统由连接有来电显示解码器，数字比较器和摘机检测器的连接电路组成。 这些组件相互作用，仅将呼叫限制在数字比较器中的那些。
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