公开(公告)号：US4490692A

公开(公告)日：1984-12-25

申请号：US382067

申请日：1982-05-26

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H04B3/14 ,  H03H11/06

CPC classification number: H04B3/145

Abstract: An equalization network is disclosed combining negative slope equalization with low pass filtering and low frequency compensation. The network is for use on electrical lines transmitting electrical signals in the voice frequency range and includes circuitry for inputting and equalizing the electrical signal on an incoming line. A circuit for reverse equalizing the electrical signal, first and second circuits for equalizing the signal, circuits for low pass filtering the signal followed by a supplemental equalization circuit and then a circuit for outputting the signal to the outgoing electrical line are provided.

Abstract translation: 公开了一种均衡网络，其结合负斜率均衡与低通滤波和低频补偿。 该网络用于在语音频率范围内发送电信号的电线上，并且包括用于在输入线路上输入和均衡电信号的电路。 提供了用于使电信号反向均衡的电路，用于均衡信号的第一和第二电路，用于低通滤波信号的电路，然后是补充均衡电路，然后用于将信号输出到输出电线。

公开(公告)号：US4160945A

公开(公告)日：1979-07-10

申请号：US833765

申请日：1977-09-16

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H02M3/156 ,  H02M3/337 ,  G05F1/56

CPC classification number: H02M3/156 ,  H02M3/3378

Abstract: A switching regulator generates controllable pulses from a primary d-c. voltage source and then smooths the pulses to form a d-c. output that varies according to the changes in the pulses. A reference voltage source establishes a d-c. reference signal that varies in magnitude with any variations in the magnitude of the d-c. output but with a substantially constant differential in magnitude between the reference signal and the d-c. output. A voltage or current sensor generates a signal that varies in accordance with changes in the voltage or current level of the d-c. output, and a comparator detects the difference between the reference signal and the signal from the sensing means to produce a control signal that varies according to changes in the difference between the two signals. The pulses that form the d-c. output are adjusted in response to the control signal to maintain the output at a regulated voltage or current level. An auxiliary internal power supply is provided for the reference voltage source and the comparator and the current flow is returned through the reference voltage source and the comparator to the auxiliary internal power supply to minimize power losses in the reference voltage source and the comparator. A predetermined d-c. dry voltage is superimposed on the d-c. voltage from the primary source and floats with respect to the reference signal and the d-c. output.

Abstract translation: 开关稳压器从主d-c产生可控脉冲。 电压源，然后平滑脉冲以形成d-c。 输出根据脉冲的变化而变化。 参考电压源建立d-c。 参考信号随着d-c幅度的任何变化而在幅度上变化。 输出，但是在参考信号和d-c之间具有基本恒定的幅度差。 输出。 电压或电流传感器产生根据d-c的电压或电流电平的变化而变化的信号。 输出，并且比较器检测参考信号和来自感测装置的信号之间的差异，以产生根据两个信号之间的差异的变化而变化的控制信号。 形成d-c的脉冲。 响应于控制信号调节输出，以将输出保持在稳定的电压或电流水平。 为参考电压源和比较器提供辅助内部电源，电流通过参考电压源和比较器返回到辅助内部电源，以最小化参考电压源和比较器中的功率损耗。 预定的d-c。 干电压叠加在d-c上。 相对于参考信号和d-c浮动的来自主源的电压。 输出。

公开(公告)号：US4587437A

公开(公告)日：1986-05-06

申请号：US590400

申请日：1984-03-19

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H03H11/48

CPC classification number: H03H11/483

Abstract: The invention discloses an improved capacitor multiplier which can be applied in both floating coupling and in grounded decoupling applications.

Abstract translation: 本发明公开了一种改进的电容器倍增器，其可以应用于浮动耦合和接地去耦应用中。

公开(公告)号：US4354159A

公开(公告)日：1982-10-12

申请号：US230215

申请日：1981-02-02

Applicant: Ian A. Schorr ,  Mark J. Beegle

Inventor： Ian A. Schorr ,  Mark J. Beegle

IPC: H03H7/24 ,  H03H11/24

CPC classification number: H03H11/24 ,  H03H7/24

Abstract: A prescription attenuator comprising a plurality of cascaded L-pad sections coupled together to form an attenuator network wherein each cascaded section includes a single pole switch for activating its respective section. The network impedance values are selected so that single L-pad section activations produce actual attenuations slightly more than an ideal level of attenuation wherein multiple section activations tend to keep the error evenly distributed about the ideal level of attenuation.

Abstract translation: 一种处方衰减器，包括耦合在一起以形成衰减器网络的多个级联L焊盘部分，其中每个级联部分包括用于激活其相应部分的单极开关。 选择网络阻抗值，使得单个L焊盘部分激活产生稍微大于理想衰减水平的实际衰减，其中多个部分激活倾向于使误差保持在理想衰减水平附近均匀分布。

公开(公告)号：US4853949A

公开(公告)日：1989-08-01

申请号：US173228

申请日：1988-03-24

Applicant: Ian A. Schorr ,  Gregory P. Pucci ,  John P. Dorth ,  Bruce R. Miller

Inventor： Ian A. Schorr ,  Gregory P. Pucci ,  John P. Dorth ,  Bruce R. Miller

IPC: H04Q11/04

CPC classification number: H04Q11/0428

Abstract: A fail safe voice system and method for digital telephone networks. The system provides for operation of voice telephone equipment at a customer location when a fault occurs at the customer location. The system has a central office with an analog line termination/digital transceiver connected to subscriber loop lines. The customer location has a digital transceiver/analog station set interface connected to the subscriber loop lines and to the voice telephone equipment. In response to a fault at the customer location the voice telephone equipment is connected directly to the subscriber loop lines thereby eliminating the digital transceiver/analog station set interface.

Abstract translation: 一种用于数字电话网络的故障安全语音系统和方法。 当在客户位置发生故障时，系统提供在客户位置处的语音电话设备的操作。 该系统具有连接到用户环路线的模拟线路终端/数字收发器的中心局。 客户位置具有连接到用户回路线和语音电话设备的数字收发器/模拟站设置接口。 响应于客户位置处的故障，语音电话设备直接连接到用户环路线，从而消除数字收发器/模拟站设置接口。

公开(公告)号：US4607140A

公开(公告)日：1986-08-19

申请号：US586532

申请日：1984-03-05

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H04M19/00 ,  H04B1/76

CPC classification number: H04M19/006

Abstract: This disclosure depicts a build out capacitor for use with a voice frequency loaded pair having tip and ring terminals. The circuit comprises means for providing a virtual impedance between the tip terminal and ground and between the ring terminal and ground. The means has a first input connected to the tip terminal and a second input connected to the ring terminal. The means for providing also has first and second outputs. A first fixed capacitor is connected between the first output and the tip terminal and a second fixed capacitor connected between the second output and the ring terminal. The first capacitor is equal in value to the second capacitor.

Abstract translation: 本公开描述了用于具有尖端和环形端子的话音频率加载对的内置电容器。 电路包括用于在尖端端子和地之间以及在环形端子和地之间提供虚拟阻抗的装置。 该装置具有连接到尖端端子的第一输入端和连接到环形端子的第二输入端。 提供的手段还具有第一和第二输出。 第一固定电容器连接在第一输出端和尖端端子之间，第二固定电容器连接在第二输出端和环形端子之间。 第一电容器的值与第二电容器相等。

公开(公告)号：US5528688A

公开(公告)日：1996-06-18

申请号：US314101

申请日：1994-09-28

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H04M19/00

CPC classification number: H04M19/005

Abstract: A circuit and method minimizes undesired noise signals associated with the battery utilized in a telephone battery feed circuit. In one embodiment, the noise voltage is amplified and inverted in phase and added back to a location on the ring line in order to provide substantial cancellation of the original noise voltage which would have appeared at the same location. In another embodiment, the noise voltage coupled to the ring line is reproduced as a replica signal. The replica signal is added in series with the tip line so as to provide equal phase and magnitude relationships relative to earth ground, thereby effectively canceling the noise current which would have flowed from the original noise source.

Abstract translation: 电路和方法使与电池电池馈送电路中使用的电池相关联的不期望的噪声信号最小化。 在一个实施例中，噪声电压被放大并相位反相并且加回到环线上的位置，以便提供将在同一位置出现的原始噪声电压的实质性消除。 在另一个实施例中，耦合到环线的噪声电压被再现为复制信号。 复制信号与尖端线串联添加，以便相对于接地面提供相等的相位和幅度关系，从而有效地消除了从原始噪声源流出的噪声电流。

公开(公告)号：US5020102A

公开(公告)日：1991-05-28

申请号：US387732

申请日：1989-08-01

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H04M3/00 ,  H04M19/00

CPC classification number: H04M19/005 ,  H04M3/005

Abstract: A semi-floating AC/DC active termination circuit with current sink. A voice frequency transmission line termination circuit has at least tip and ring terminals and provides an AC termination impedance and a DC termination resistance. The circuit has at least a first resistance element connected between the tip and ring terminate which forms the DC termination resistance. A first resistor/capacitor series circuit, having at least a resistor and capacitor connected in series, is connected between the tip terminals and a first virtual ground terminal, and a second resistor/capacitor series circuit, having at least a resistor and capacitor connected in series, is connected between the ring terminal and a second virtual ground terminal. The first resistance element and the first and second resistor/capacitor series circuits form the AC termination impedance. A first operational amplifier has an output connected to the first virtual ground terminal and a second operational amplifier has an output connected to the second virtual ground terminal. The first and second operational amplifiers provide a virtual ground for voltages and currents appearing at the tip and ring terminals. In a preferred embodiment the first operational amplifier has a negative input operationally connected to a voltage source and has a positive input connected to a signal receiving line. The second operational amplifier has a negative input operationally connected to the signal receiving line and has a positive input connected to a circuit ground.

Abstract translation: 具有电流吸收器的半浮动AC / DC有源终端电路。 语音频率传输线终端电路至少具有尖端和环形端子，并提供AC终端阻抗和DC终端电阻。 电路至少具有连接在尖端和环端之间的第一电阻元件，形成DC终端电阻。 具有串联连接的至少一个电阻器和电容器的第一电阻器/电容器串联电路连接在尖端端子和第一虚拟接地端子之间，第二电阻器/电容器串联电路至少连接有电阻器和电容器 串联连接在环形端子和第二虚拟接地端子之间。 第一电阻元件和第一和第二电阻/电容器串联电路形成AC端接阻抗。 第一运算放大器具有连接到第一虚拟接地端子的输出端，第二运算放大器具有连接到第二虚拟接地端子的输出端。 第一和第二运算放大器提供出现在尖端和环形端子处的电压和电流的虚拟接地。 在优选实施例中，第一运算放大器具有可操作地连接到电压源的负输入，并且具有连接到信号接收线的正输入。 第二运算放大器具有可操作地连接到信号接收线的负输入端，并具有连接到电路地的正输入端。

公开(公告)号：US4607141A

公开(公告)日：1986-08-19

申请号：US586531

申请日：1984-03-05

Applicant: Ian A. Schorr

Inventor： Ian A. Schorr

IPC: H04M19/00 ,  H04B1/76

CPC classification number: H04M19/006

Abstract: This disclosure depicts an active network for providing a virtual impedance to a voice frequency loaded pair having tip and ring terminals. The network comprises means for providing a predetermined capacitance between the tip terminal and ground and between the ring terminal and ground and has a variable resistive means. The means has a first input operatively connected to the tip terminal and a second input operatively connected to the ring terminal and also has first and second outputs. First and second fixed resistive means are operatively connected between the first output and the tip terminal and the second output and the ring terminal, respectively. The value of the predetermined capacitance is determined by the first and second fixed resistive means and the variable resistive means in the means for providing a predetermined capacitance.

Abstract translation: 该公开描述了用于向具有尖端和环形终端的语音加载对提供虚拟阻抗的活动网络。 网络包括用于在尖端端子与地之间以及环形端子与地之间提供预定电容并具有可变电阻装置的装置。 所述装置具有可操作地连接到所述尖端端子的第一输入端和可操作地连接到所述环形端子的第二输入端，并且还具有第一和第二输出端。 第一和第二固定电阻装置分别可操作地连接在第一输出端和尖端端子与第二输出端和环形端子之间。 预定电容的值由用于提供预定电容的装置中的第一和第二固定电阻装置和可变电阻装置确定。