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公开(公告)号：US07705615B2
公开(公告)日：2010-04-27
申请号：US11999161
申请日：2007-12-04
申请人： Zinovy Tyves , Gary D. Bree , Brent T. Repp , Seyed R. Zarabadi
发明人： Zinovy Tyves , Gary D. Bree , Brent T. Repp , Seyed R. Zarabadi
CPC分类号： H03K17/955 , H03K2217/96015
摘要： An extruded capacitive sensor assembly includes multiple sense conductors of unequal length disposed in an upper section of a non-conductive jacket, and a ground conductor disposed in a lower section of the jacket adjacent a panel or carrier to which the strip is affixed. A sensor strip with three sense conductors is formed by extruding a non-conductive jacket having first and second sense conductors in the upper section of the jacket, and severing the first sense conductor to create three unequal length sense conductor segments. Electrical termination to the sense and ground conductors can be made at the point where the first sense conductor is severed, or at the end of the sensor strip. In cases where only two sense conductor segments are needed, the third sense conductor segment is removed or simply un-used.
摘要翻译： 挤出的电容式传感器组件包括设置在非导电护套的上部中的不等长度的多个感测导体，以及布置在护套的下部中的接地导体，邻近贴片所附着的面板或载体。 具有三个感测导体的传感器带通过在夹套的上部中挤出具有第一和第二感测导体的非导电套管而形成，并且切断第一感测导体以产生三个不等长度的感测导体段。 可以在第一感测导体断开的点处或传感器带的末端处对感测和接地导体的电终端进行。 在仅需要两个感测导体段的情况下，第三感测导体段被去除或者简单地不被使用。
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公开(公告)号：US5561426A
公开(公告)日：1996-10-01
申请号：US311999
申请日：1994-09-26
摘要： A converter for converting an analog signal into a digital representation having a most significant bit (MSB), upper-significant bits (USBs), and lower-significant bits (LSBs) with a least significant bit being a predetermined incremental voltage value. The converter is responsive to external signals and is adapted to receive a supply voltage. The analog-to-digital converter provides for a determination of the most significant bit (MSB) that does not rely on the ratio factor between the capacitors of the charge-storage capacitor bank nor on the accuracy of the ratio factor of the resistors of the voltage-scale resistive ladder network. Further, the converter comprises a charge-storage capacitor bank, a voltage-scale resistive ladder network, first and second comparators, an output stage amplifier, and an arrangement of electronically controlled switches and capacitors that cancel the DC offset conditions within the analog-to-digital converter in such a way that the DC offset conditions do not jeopardize the accuracy of the converter.
摘要翻译： A转换器，用于将模拟信号转换成具有最高有效位（MSB），高有效位（USB）和低有效位（LSB））的数字表示，其中最低有效位是预定的增量电压值。 转换器响应于外部信号并且适于接收电源电压。 模数转换器提供了不依赖于电荷存储电容器组的电容器之间的比率因子的最高有效位（MSB）的确定以及电容器的电阻器的比率因子的精度 电压级电阻梯形网络。 此外，转换器包括电荷存储电容器组，电压级电阻梯形网络，第一和第二比较器，输出级放大器和电子控制开关和电容器的布置，其抵消模拟到 数字转换器，使得DC偏移条件不会危及转换器的精度。
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公开(公告)号：US5073975A
公开(公告)日：1991-12-17
申请号：US399948
申请日：1989-08-28
CPC分类号： H03J1/0091
摘要： A Stop On Station (SOS) circuit for a AM and FM radio receivers evaluates field strength of a received station signal and in addition measures and evaluates the frequency of the IF signal so as to assure that the received signal is essentially centered at the IF frequency to identify candidate stations signals which are suitable for listening. The IF frequency for a received candidate station signal is evaluated for an evaluation period of time (e.g., for 40 milliseconds). During each 40 millisecond period, fifteen samples of the frequency of the IF signal are counted and evaluated. If the frequency of the measured signal falls within acceptable limits, a four stage binary persistence counter is incriminated. If a count of 12 or more out of the 15 possible counts is accumulated therein during a 40 ms evaluation period, a station signal is considered to be suitable from a standpoint of received frequency and a "frequency pass" signal is generated. The SOS circuit, in turn, generates a "Stop" signal if the AGC signal is above a predetermined threshold at the time the pass signal occurs. In this case of FM signals, the magnitude of ultrasonic noise (noise in the range of 100 kHz to 200 kHz) in the output of the FM detector is measured and used to identify acceptable station signals. Noise above a threshold value eliminates a station signal from consideration.
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公开(公告)号：US4996499A
公开(公告)日：1991-02-26
申请号：US407842
申请日：1989-09-15
申请人： Seyed R. Zarabadi , Linh N. Pham
发明人： Seyed R. Zarabadi , Linh N. Pham
CPC分类号： H03F1/308
摘要： An inverting amplifier useful in an oscillator circuit includes complementary serially connected first and second metal-oxide-semiconductor field effort transistor (MOSFETS) and first and second resistors, two capacitors, a first feedback circuit having two MOSFETS in series with a third resistor and a second feedback circuit having two MOSFETS and a fourth resistor in series. Each feedback circuit provides a feed back path from the drain of one of the output transistors to the gate thereof. The resistors are polysilicon type resistors and have a negative thermal coefficient. The amplifier has a very stable output signal amplitude which is essentially independent of integrated circuit manufacturing processing variations and operating temperature variations within useful ranges.
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公开(公告)号：US08643333B2
公开(公告)日：2014-02-04
申请号：US13221942
申请日：2011-08-31
IPC分类号： H02J7/00 , H01M10/46 , G01N27/416
CPC分类号： G01R31/3658
摘要： A battery monitor system for determining a cell voltage between a low side contact and a high side contact of a cell in situ as one of a plurality of cells connected in series to form a battery. The system uses an arrangement of switches and capacitors to shift relatively high absolute voltages of a battery stack to a relative low voltage level so lower voltage electronics can be used to monitor cell voltages. The system may be configured to provide a single ended measurement or a differential measurement indicative of a cell voltage. The differential measurement may be advantageous to correct or offset signal noise caused by electromagnetic interference (EMI).
摘要翻译： 一种电池监视器系统，用于确定作为串联连接的多个单元之一的原位的低端接触和高侧接触之间的电池电压以形成电池。 该系统使用开关和电容器的布置来将电池堆的相对较高的绝对电压移动到相对低的电压水平，因此可以使用较低电压的电子元件来监测电池电压。 该系统可以被配置为提供指示单元电压的单端测量或差分测量。 差分测量可能有利于校正或抵消由电磁干扰（EMI）引起的信号噪声。
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公开(公告)号：US06486661B2
公开(公告)日：2002-11-26
申请号：US09781048
申请日：2001-02-12
IPC分类号： G01N2772
CPC分类号： G01C25/005 , G01D3/022 , G01D3/0365
摘要： A method of removing bias drift from the output signal of a sensor is provided. The method includes sensing a condition with a sensor and generating an output signal, differentiating the output signal, and comparing the differentiated output signal with a threshold change. The method also includes the steps of determining the presence of bias drift based on the comparison, generating a bias adjustment command signal based on the determined presence of bias drift, and adjusting the sensed signal generated by the sensor in accordance with the bias adjusted command signal so as to remove bias drift from the output signal.
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公开(公告)号：US5450042A
公开(公告)日：1995-09-12
申请号：US257259
申请日：1994-06-08
申请人： Brian K. Good , Seyed R. Zarabadi
发明人： Brian K. Good , Seyed R. Zarabadi
CPC分类号： H03K3/3545 , H03L3/00 , H03B5/364
摘要： A crystal oscillator circuit that provides a low distortion clocking signal. The oscillator circuit incorporates an inverter circuit in combination with a diode connected transmission gate circuit. The transmission gate circuit includes two MOSFETs connected between input and output nodes of the inverter circuit. When the current at the input node goes high and the current at the output node goes low, one of the two transmission gate circuit MOSFETs will begin conducting such that current at the input node will be transferred to the output node, thus decreasing the voltage difference between the two nodes. Likewise, when the current at the output node goes high and the current at the input node goes low, the other MOSFET of the transmission gate circuit will begin to conduct such that current is transferred from the output node to the input node, again reducing the voltage difference between the input and output node. Additionally, the transmission gate circuit provides the impedance necessary to generate oscillation of the oscillator circuit at start-up to regulate the output voltage swing of the oscillator circuit.
摘要翻译： 提供低失真时钟信号的晶振电路。 振荡器电路包括与连接的二极管连接的传输门电路的逆变器电路。 传输门电路包括连接在逆变器电路的输入和输出节点之间的两个MOSFET。 当输入节点处的电流变高并且输出节点处的电流变为低电平时，两个传输门电路MOSFET中的一个将开始导通，使得输入节点处的电流将被传送到输出节点，从而降低电压差 在两个节点之间。 类似地，当输出节点处的电流变高并且输入节点处的电流变低时，传输门电路的另一个MOSFET将开始导通，使得电流从输出节点传送到输入节点，再次减少 输入和输出节点之间的电压差。 此外，传输门电路提供在启动时产生振荡电路的振荡所必需的阻抗以调节振荡器电路的输出电压摆幅。
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公开(公告)号：US5337021A
公开(公告)日：1994-08-09
申请号：US75941
申请日：1993-06-14
申请人： Seyed R. Zarabadi , Mohammed Ismail
发明人： Seyed R. Zarabadi , Mohammed Ismail
摘要： A circuit apparatus suitable for use as a basic building block of very small geometry integrated circuits (on the order of 1 micron and smaller) comprising (i) a current mirror circuit with a cascode output, comprising a first transistor and a second transistor connected in series, the first transistor coupled between a ground and the second transistor, and (ii) a single stage gain loop comprising a transresistance amplifier coupled between a control input of the second transistor and the series connection of the first and second transistors, wherein the circuit apparatus provides an output with high impedance output and with maximum swing capability.
摘要翻译： 一种适合用作非常小几何集成电路（大约1微米或更小）的基本构建块的电路装置，包括：（i）具有共源共栅输出的电流镜像电路，包括第一晶体管和连接在其中的第二晶体管 串联，耦合在地和第二晶体管之间的第一晶体管，以及（ii）单级增益环，包括耦合在第二晶体管的控制输入端和第一和第二晶体管的串联连接之间的跨阻放大器，其中电路 设备提供具有高阻抗输出和最大摆幅能力的输出。
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公开(公告)号：US4866779A
公开(公告)日：1989-09-12
申请号：US218636
申请日：1988-07-13
摘要： An audio processor for adaptively rejecting undesired noise and interference in an audio input which includes a variable Q, 10 kHz switched capacitor notch filter. The Q of the notch filter is varied by a control loop responsive to the 10 kHz content of the audio signal. The notch filter includes a summer section that is clocked at a predetermined frequency, and an integrator section which is clocked at a multiple of the predetermined frequency in order to prevent center frequency variation with changes in Q of the notch filter.
摘要翻译： 一种音频处理器，用于自适应地拒绝包括可变Q，10kHz开关电容器陷波滤波器的音频输入中的不期望的噪声和干扰。 通过响应于音频信号的10kHz内容的控制环来改变陷波滤波器的Q。 陷波滤波器包括以预定频率计时的加法器部分和以预定频率的倍数计时的积分器部分，以便防止随着陷波滤波器Q的变化的中心频率变化。
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公开(公告)号：US07616011B2
公开(公告)日：2009-11-10
申请号：US11784036
申请日：2007-04-05
IPC分类号： G01R27/26
CPC分类号： H03K17/955
摘要： A switched capacitance detection circuit is responsive to changes in the fringing capacitance of a capacitive proximity sensor having at least one capacitive sensor element. In cases where the sensor has a single sensor element, the switching frequency of the detection circuit is controlled to maintain measurement accuracy in the presence of sensor moisture while minimizing power consumption and electromagnetic radiation. In cases where the sensor has multiple sensor elements, the capacitance values for each sensor element are differenced, absolute-valued and summed to form an output in which common-mode effects due to sensor moisture, temperature and sensor aging are canceled out.
摘要翻译： 开关电容检测电路响应于具有至少一个电容式传感器元件的电容式接近传感器的边缘电容的变化。 在传感器具有单个传感器元件的情况下，检测电路的开关频率被控制以在传感器湿度的存在下保持测量精度，同时最小化功率消耗和电磁辐射。 在传感器具有多个传感器元件的情况下，每个传感器元件的电容值被差分，绝对值和相加，以形成其中由于传感器湿度，温度和传感器老化而导致的共模效应被抵消的输出。
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