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1. 发明授权

US06657476B1 AC-coupled sensor signal conditioning circuit 有权
标题翻译：交流耦合传感器信号调理电路
公开(公告)号：US06657476B1
公开(公告)日：2003-12-02
申请号：US10192455
申请日：2002-07-09
申请人： Robert E. Bicking
发明人： Robert E. Bicking
IPC分类号： G06G718
CPC分类号： G01R33/09
摘要： A method and apparatus for minimizing errors in a sensor device due to signal amplitude variation are disclosed herein. A signal output from the sensor device is amplified and, thereafter, AC-coupled to a comparator such that the amplification and AC-coupling of the signal minimize offset shift-related errors associated with the sensor device. The signal can be coupled to eliminate offset shifts due to component mismatches, calibration, aging and/or temperature associated with the sensor device. An AC-coupled sensor signal conditioning circuit is utilized to amplify the signal through an amplifier and then AC-couple the signal to a comparator.
摘要翻译：本文公开了一种用于使由于信号幅度变化引起的传感器装置中的误差最小化的方法和装置。从传感器装置输出的信号被放大，然后被AC耦合到比较器，使得信号的放大和AC耦合使与传感器装置相关联的偏移偏移有关的误差最小化。可以将信号耦合以消除由于与传感器装置相关联的部件不匹配，校准，老化和/或温度引起的偏移偏移。 AC耦合传感器信号调理电路用于通过放大器放大信号，然后将信号交流耦合到比较器。

2. 发明授权

US06380789B1 Switched input circuit structure 失效
标题翻译：开关输入电路结构
公开(公告)号：US06380789B1
公开(公告)日：2002-04-30
申请号：US09060617
申请日：1998-04-15
申请人： Andrea Baschirotto , Guido Brasca , Rinaldo Castello , Giampiero Montagna
发明人： Andrea Baschirotto , Guido Brasca , Rinaldo Castello , Giampiero Montagna
IPC分类号： G06G718
CPC分类号： G06G7/12 , H03F3/72 , H03F2203/7215
摘要： A switched input circuit structure of the type which includes an input terminal receiving an input voltage and an output terminal connected to an input capacitor. An operational amplifier is included having a non-inverting terminal connected to a ground reference terminal, an inverting input terminal, and an output terminal feedback connected to the inverting input terminal and held in a virtual ground condition by a parallel of first and second charge paths which are connected between the input terminal of the switched input circuit structure and the inverting input terminal of the operational amplifier and connected to the supply voltage reference and the ground reference, respectively.
摘要翻译：一种切换输入电路结构，其类型包括接收输入电压的输入端和连接到输入电容的输出端。包括运算放大器，其具有连接到接地参考端子的非反相端子，反相输入端子和连接到反相输入端子的输出端子反馈，并且通过第一和第二充电路径的并联保持在虚拟接地状态它们连接在开关输入电路结构的输入端和运算放大器的反相输入端之间，分别连接到电源电压基准和接地基准。

3. 发明授权

US06344767B1 Switched-opamp technique for low-voltage switched capacitor circuits 有权
标题翻译：低压开关电容电路的开关运算放大技术
公开(公告)号：US06344767B1
公开(公告)日：2002-02-05
申请号：US09493264
申请日：2000-01-28
申请人： Sin-Luen Cheung , Howard Cam Luong
发明人： Sin-Luen Cheung , Howard Cam Luong
IPC分类号： G06G718
CPC分类号： H03F3/3023 , G11C27/026 , H03F3/005 , H03F3/45183 , H03F3/72 , H03F2203/45711
摘要： A switched capacitor circuit is described that uses two switchable operational amplifiers that operate in parallel and in alternate clock phases. In a preferred embodiment of the invention, the two operational amplifiers may be implemented by a single two-stage operational amplifier having a common input stage and two switchable output pairs. The novel switched capacitor circuit may be used in any application that uses a conventional switched capacitor circuit, such as an integrator and a filter means.
摘要翻译：描述了一种开关电容器电路，其使用两个并联和交替时钟相位的可切换运算放大器。在本发明的优选实施例中，两个运算放大器可以由具有公共输入级和两个可切换输出对的单个两级运算放大器来实现。新颖的开关电容器电路可以用于使用常规开关电容器电路的任何应用中，例如积分器和滤波器装置。

4. 发明授权

US06714063B2 Current pulse receiving circuit 有权
公开(公告)号：US06714063B2
公开(公告)日：2004-03-30
申请号：US10214149
申请日：2002-08-08
申请人： Kazunori Nishizono
发明人： Kazunori Nishizono
IPC分类号： G06G718
CPC分类号： H04B10/6933 , H03F3/087 , H03F3/45973 , H03K3/02337 , H03K5/007 , H03K5/086 , H04B10/6911 , H04B10/6931
摘要： A current pulse receiving circuit suitable for converting a current pulse converted by a photodetector from a light pulse received in optical communications and outputting a logic level voltage pulse with an accurate pulse width is disclosed. When an output signal from a current-to-voltage converter circuit is detected to have a large amplitude by a large signal detection circuit, an amount of offset cancellation of a DC cancellation circuit is decreased to limit the amplitude of the output signal from the current-to-voltage converter circuit. Since the amplitude of an input signal of an amplifier circuit is limited, tail characteristics at a trailing edge of a pulse are small and an output is provided at an output terminal with an accurate pulse width.

5. 发明授权

US06392465B1 Sub-threshold CMOS integrator 有权
标题翻译：子阈值CMOS积分器
公开(公告)号：US06392465B1
公开(公告)日：2002-05-21
申请号：US09740296
申请日：2000-12-18
申请人： Don Sauer
发明人： Don Sauer
IPC分类号： G06G718
CPC分类号： G06G7/186
摘要： An integrator circuit having a relatively large RC time constant includes a resistive element implemented with a field effect transistor operated in a sub-threshold mode. The size of the field effect transistor is selected, in addition to the sub-threshold gate voltage, to achieve a desired resistance value in a small area and without using bipolar devices. A differential integrator circuit includes two field effect transistors operated in a sub-threshold mode, with a capacitor connected between the output terminals of the two field effect transistors. A bulk drive circuit can be optionally used to reduce high frequency in the bulk.
摘要翻译：具有相对大的RC时间常数的积分器电路包括用以亚阈值模式操作的场效应晶体管实现的电阻元件。除了亚阈值栅极电压之外，选择场效应晶体管的尺寸以在小面积中实现期望的电阻值，并且不使用双极器件。差分积分电路包括以亚阈值模式操作的两个场效应晶体管，其中电容器连接在两个场效应晶体管的输出端之间。大容量驱动电路可以任选地用于降低体积中的高频率。

6. 发明授权

US06239643B1 Offset correction circuit and DC amplification circuit 失效
标题翻译：偏移校正电路和直流放大电路
公开(公告)号：US06239643B1
公开(公告)日：2001-05-29
申请号：US09159121
申请日：1998-09-23
申请人： Tatsuhiko Takatsu
发明人： Tatsuhiko Takatsu
IPC分类号： G06G718
CPC分类号： H03F1/30
摘要： An offset correction circuit containing an integrator is provided between an output of a first DC amplifier and an input of a second DC amplifier, and the integrator corrects not only an offset error caused by an input signal in the first DC amplifier, but also an offset error caused by an input signal in the second DC amplifier. Thus, the effect of the offset error proportional to the integral value of the input signal strength, occurring depending on the temperature stability or power supply voltage variation rate resulting from the input signal in the two DC amplifiers can be canceled.
摘要翻译：包含积分器的偏移校正电路设置在第一DC放大器的输出和第二DC放大器的输入之间，积分器不仅校正由第一DC放大器中的输入信号引起的偏移误差，而且还校正偏移由第二直流放大器中的输入信号引起的误差。因此，可以消除与根据两个DC放大器中的输入信号产生的温度稳定性或电源电压变化率而发生的输入信号强度的积分值成比例的偏移误差的影响。

7. 发明授权

US06566933B1 Switched capacitor transmitter pre-driver 有权
标题翻译：开关电容变送器预驱动器
公开(公告)号：US06566933B1
公开(公告)日：2003-05-20
申请号：US09621964
申请日：2000-07-21
申请人： Bill Lye
发明人： Bill Lye
IPC分类号： G06G718
CPC分类号： H04L25/028
摘要： A transmitter pre-driver utilizing discrete-time charge sharing between multiple capacitors to create intermediate voltages. The intermediate voltages are fed into an output driver to produce Class AB and Class A output current flow.
摘要翻译：发射机预驱动器利用多个电容器之间的离散时间电荷共享来产生中间电压。中间电压被馈送到输出驱动器以产生AB类和A类输出电流。

8. 发明授权

US06388500B1 Gain controller using switched capacitors 失效
公开(公告)号：US06388500B1
公开(公告)日：2002-05-14
申请号：US09575994
申请日：2000-05-23
申请人： Jin-kuk Lee , Dong-young Chang , You-jin Cha , Geun-soon Kang , Seung-hoon Lee
发明人： Jin-kuk Lee , Dong-young Chang , You-jin Cha , Geun-soon Kang , Seung-hoon Lee
IPC分类号： G06G718
CPC分类号： H03G1/0094 , G06G7/06 , G06J1/00
摘要： A gain controller using switched capacitors is provided. The gain controller is operable in a sampling mode or an amplifying mode and controls the gain of an analog input signal. The gain controller includes an operational amplifier, input capacitors, a feedback capacitor, and switches. The operational amplifier controls the gain of the analog input signal and generates an output signal having the controlled gain. The input capacitors are connected to the input side of the operational amplifier in parallel. The feedback capacitor is connected between the input side and the output side of the operational amplifier. The switches connect at least one of the input capacitors to the input signal or a reference voltage, in response to the kinds of operation modes and a predetermined externally applied digital gain control signal. According to the gain controller using switched capacitors, it is possible to automatically control the gain of an input signal at high speed and to reduce power consumption since the time required for settling the gain of the input signal to a desired value is short.

9. 发明授权

US06380790B1 Integrator topplogy for continuous integration 失效
标题翻译：用于连续集成的积分器地形学
公开(公告)号：US06380790B1
公开(公告)日：2002-04-30
申请号：US09502134
申请日：2000-02-11
申请人： Timothy J. Denison
发明人： Timothy J. Denison
IPC分类号： G06G718
CPC分类号： G06G7/1865
摘要： An apparatus includes a switching circuit, an integrator circuit having an input for receiving a first signal from the switching circuit, a sensing circuit having an input for receiving a second signal from the integrator circuit, and a control circuit having an input for receiving a third signal from the sensing circuit and an output for sending a fourth signal to the switching circuit. In certain applications, the integrator circuit includes a first integrator and a second integrator having an inverting terminal connected to an inverting terminal of the first integrator. The second integrator also includes a non-inverting terminal connected to an output of the first integrator through a first capacitor, and an output connected to a non-inverting terminal of the first integrator through a second capacitor.
摘要翻译：一种装置包括开关电路，具有用于接收来自开关电路的第一信号的输入端的积分器电路，具有用于从积分电路接收第二信号的输入端的感测电路，以及具有用于接收第三信号的输入端的控制电路来自感测电路的信号和用于向切换电路发送第四信号的输出。在某些应用中，积分器电路包括第一积分器和第二积分器，其具有连接到第一积分器的反相端子的反相端子。第二积分器还包括通过第一电容器连接到第一积分器的输出的非反相端子，以及通过第二电容器连接到第一积分器的非反相端的输出端。

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