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1. 发明授权

US5345118A Precision MOS resistor 失效
标题翻译：精密MOS电阻
公开(公告)号：US5345118A
公开(公告)日：1994-09-06
申请号：US873948
申请日：1992-04-23
申请人： Bert White , Mehrdad Negahban-Hagh
发明人： Bert White , Mehrdad Negahban-Hagh
IPC分类号： H03G3/10 , H03F3/345 , H03H11/24 , H03H11/46 , H03K3/353
CPC分类号： H03H11/245 , H03F3/345 , H03H11/46 , H01L2924/0002
摘要： A precision resistor using MOS devices. The present invention utilizes an NMOS resistive element to simulate the resistor. A pair of PMOS source followers are implemented to control the value of the resistor and cancel the non-linearity due to the drain-source voltage V.sub.ds. A pair of NMOS source followers serve to eliminate non-linear distortions due to the "body effect" that can exist in the resistive element. The resistor circuit of the present invention provides higher precision, linearity and high value resistors in a smaller area than prior art MOS resistors.
摘要翻译：使用MOS器件的精密电阻器。本发明利用NMOS电阻元件来模拟电阻器。实现一对PMOS源极跟随器来控制电阻值并消除由于漏 - 源电压Vds引起的非线性。一对NMOS源极跟随器用于消除可能存在于电阻元件中的“体效应”引起的非线性失真。本发明的电阻器电路在比现有技术的MOS电阻器更小的面积中提供更高精度，线性和高值的电阻器。

2. 发明授权

US5289115A Electronic watt-hour meter with selection of time base signals 失效
标题翻译：电子电度表，可选择时基信号
公开(公告)号：US5289115A
公开(公告)日：1994-02-22
申请号：US660986
申请日：1991-02-27
申请人： Warren R. Germer , Mehrdad Negahban-Hagh
发明人： Warren R. Germer , Mehrdad Negahban-Hagh
IPC分类号： G01R15/09 , G01R21/133 , G01R22/00 , G01R19/00 , G01R21/06
CPC分类号： G01R15/09 , G01R21/133 , G01R22/00
摘要： An electronic watthour meter is digitally configurable to operate as several different types of watthour meters for metering electrical energy from a variety of different electric utility services. Automatic scaling of line input currents is provided to scale the voltage input to an analog to digital converter over selected ranges such that low level and high level input signals are measured in an optimum range. A digital signal processor is employed to calculate values for metered electrical energy and output pulses, each proportional to a quantum of energy flowing in the circuit being metered. The processor calculates the value of DC offset errors inherent in the various analog circuits of the meter and uses that value in the calculation of metered electrical energy to compensate for such offset errors. The meter employs automatic and manually initiated test functions for testing the operation of the processor and other critical circuits in the meter.
摘要翻译：电子电度表是数字可配置的，可以作为几种不同类型的电度表来测量来自各种不同电力公用事业的电能。提供线路输入电流的自动缩放以在所选范围内缩放对模数转换器的电压输入，使得在最佳范围内测量低电平和高电平输入信号。采用数字信号处理器来计算计量的电能和输出脉冲的数值，每个与计量的电路中流过的能量的量子成比例。处理器计算仪表各种模拟电路中固有的直流偏移误差的值，并在计算计量的电能中补偿该值以补偿这种偏移误差。仪表采用自动和手动启动的测试功能，用于测试仪表中处理器和其他关键电路的操作。

3. 发明授权

US5325051A Electronic watthour meter 失效
标题翻译：电子电度表
公开(公告)号：US5325051A
公开(公告)日：1994-06-28
申请号：US953703
申请日：1992-09-30
申请人： Warren R. Germer , Maurice J. Ouellette , Mehrdad Negahban-Hagh , Bertram White
发明人： Warren R. Germer , Maurice J. Ouellette , Mehrdad Negahban-Hagh , Bertram White
IPC分类号： G01R15/09 , G01R21/133 , G01R22/00
CPC分类号： G01R21/133 , G01R15/09 , G01R22/00
摘要： An electronic watthour meter is digitally configurable to operate as several different types of watthour meters for metering electrical energy from a variety of different electric utility services. Automatic scaling of line input currents is provided to scale the voltage input to an analog to digital converter over selected ranges such that low level and high level input signals are measured in an optimum range. A digital signal processor is employed to calculate values for metered electrical energy and output pulses, each proportional to a quantum of energy flowing in the circuit being metered. The processor calculates the value of DC offset errors inherent in the various analog circuits of the meter and uses that value in the calculation of metered electrical energy to compensate for such offset errors. The meter employs automatic and manually initiated test functions for testing the operation of the processor and other critical circuits in the meter.
摘要翻译：电子电度表是数字可配置的，可以作为几种不同类型的电度表来测量来自各种不同电力公用事业的电能。提供线路输入电流的自动缩放以在所选范围内缩放对模数转换器的电压输入，使得在最佳范围内测量低电平和高电平输入信号。采用数字信号处理器来计算计量的电能和输出脉冲的数值，每个与计量的电路中流过的能量的量子成比例。处理器计算仪表各种模拟电路中固有的直流偏移误差的值，并在计算计量的电能中补偿该值以补偿这种偏移误差。仪表采用自动和手动启动的测试功能，用于测试仪表中处理器和其他关键电路的操作。

4. 发明授权

US5168179A Balanced modulator for auto zero networks 失效
标题翻译：用于自动零网络的平衡调制器
公开(公告)号：US5168179A
公开(公告)日：1992-12-01
申请号：US769338
申请日：1991-10-01
申请人： Mehrdad Negahban-Hagh
发明人： Mehrdad Negahban-Hagh
IPC分类号： H03F3/00
CPC分类号： H03F3/005
摘要： A balanced modulator for use with auto-zero networks is described. The present invention is a switched capacitor balanced modulator suitable for use in auto-zero networks where a valid input signal is available only at one phase. The present invention changes the polarity of the input signal by adjusting a switched feedback capacitor, making it possible for the switched input capacitor to sample only at one (valid) phase. The balanced modulator of the present invention may be utilized with first order auto-zero low pass filters or other switched capacitor blocks, such as gain blocks, first order high pass filters, etc.
摘要翻译：描述了一种用于自动归零网络的平衡调制器。本发明是适用于自动调零网络的开关电容平衡调制器，其中有效输入信号仅在一个相位可用。本发明通过调节开关反馈电容器来改变输入信号的极性，使得开关式输入电容器只能在一个（有效）相位进行采样。本发明的平衡调制器可以与一阶自动归零低通滤波器或其它开关电容器块一起使用，例如增益块，一阶高通滤波器等。

5. 发明授权

US5017860A Electronic meter digital phase compensation 失效
标题翻译：电子表数字相位补偿
公开(公告)号：US5017860A
公开(公告)日：1991-05-21
申请号：US542668
申请日：1990-06-25
申请人： Warren R. Germer , Maurice J. Ouellette , Mehrdad Negahban-Hagh
发明人： Warren R. Germer , Maurice J. Ouellette , Mehrdad Negahban-Hagh
IPC分类号： G01R21/133
CPC分类号： G01R21/133
摘要： An electronic watthour meter for metering the consumption of electrical energy on power lines includes phase compensation means for compensating for leading and lagging phase differences between line current and voltage, whereby sampling times of the current and voltage are shifted to compensate for phase errors between the current and voltage by controlling timing signals provided to current and voltage analog to digital converters. Digital output signals from the analog to digital converters proportional to current and voltage are multiplied to provide an accurate representation of energy consumption as a result of the compensation.
摘要翻译：用于测量电力线上电能消耗的电子电度表包括用于补偿线路电流和电压之间的前导和滞后相位差的相位补偿装置，由此电流和电压的采样时间被移位以补偿电流之间的相位误差并通过控制提供给电流和电压模数转换器的定时信号来控制电压。与模拟电流和数字转换器成比例的数字输出信号与电流和电压成正比，从而提供了由于补偿而导致的能量消耗的精确表示。

6. 发明授权

US4763088A Switching scheme for switched capacitor filters 失效
标题翻译：开关电容滤波器的开关方案
公开(公告)号：US4763088A
公开(公告)日：1988-08-09
申请号：US857926
申请日：1986-04-30
申请人： Mehrdad Negahban-Hagh
发明人： Mehrdad Negahban-Hagh
IPC分类号： H03H19/00 , G11C27/02
CPC分类号： H03H19/002
摘要： A filter for second order signals in the frequency domain. A novel switching system is described which permits a single capacitor to serve as both a termination capacitor and a sampling capacitor. A capacitor which has a value equal to the desired value of a sampling capacitor is coupled in a feedback loop of an operational amplifier. This capacitor is summed with another capacitor to result in the desired value of the termination capacitor. The present invention permits the fabrication of second order filters in a smaller silicon area than prior art methods.
摘要翻译：用于频域中二阶信号的滤波器。描述了一种新颖的开关系统，其允许单个电容器用作终端电容器和采样电容器两者。具有等于采样电容器的期望值的值的电容器被耦合在运算放大器的反馈环路中。该电容器与另一个电容相加以产生终端电容器的期望值。本发明允许在比现有技术方法更小的硅面积中制造二阶滤光器。

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