公开(公告)号：US06608516B1

公开(公告)日：2003-08-19

申请号：US10061007

申请日：2002-01-30

申请人： Paul A. Lennous

发明人： Paul A. Lennous

IPC分类号： G06G719

CPC分类号： G06G7/186 ,  H03H11/04

摘要： A variable time constant integrator includes an amplifier configured to generate an output signal, a capacitor coupled to provide feedback to the amplifier, and a variable gain element coupled to the output of the amplifier and to the capacitor. The variable gain element is configured to provide the product of a gain and the output signal to the capacitor. The variable gain element is also configured to receive an indication of a new value of the gain and to responsively set the gain equal to the new value of the gain. Adjusting the gain of the variable gain element adjusts the integrator's time constant.

摘要翻译： 可变时间常数积分器包括被配置为产生输出信号的放大器，被耦合以向放大器提供反馈的电容器，以及耦合到放大器和电容器的输出的可变增益元件。 可变增益元件被配置为向电容器提供增益和输出信号的乘积。 可变增益元件还被配置为接收增益的新值的指示并且响应地设置增益等于增益的新值。 调整可变增益元件的增益可调整积分器的时间常数。

公开(公告)号：US06570432B2

公开(公告)日：2003-05-27

申请号：US10133682

申请日：2002-04-26

申请人： Timothy J. Denison

发明人： Timothy J. Denison

IPC分类号： G06G719

CPC分类号： G06G7/1865

摘要： Provided are integrator circuit topologies that enable continuous integration without reset of the integrator circuit. One such integrator circuit includes a first integrator and a second integrator, each of the two integrators having a non-inverting terminal. Each of the non-inverting terminals is connected to an input node to alternately receive an input current for continuous integrator circuit integration without integrator circuit reset. The inverting terminal of the second integrator can be connected to an inverting terminal of the first integrator. The non-inverting terminal of the second integrator can be connected to an output of the first integrator through a first capacitor, and an output of the second integrator can be connected to a non-inverting terminal of the first integrator through a second capacitor. With such a capacitor connection, the capacitors alternately charge and discharge, based on integrator input current that is alternately directed between the non-inverting terminals of the integrators.

公开(公告)号：US06445239B1

公开(公告)日：2002-09-03

申请号：US09214199

申请日：2000-01-31

申请人： Hermann Zierhut

发明人： Hermann Zierhut

IPC分类号： G06G719

CPC分类号： H04L25/0286 ,  H04L25/0272

摘要： A bus coupling includes an amplitude-controlled transmission circuit for generating a substantially rectangular active pulse for a transmission pulse including an active pulse and an equalizer pulse for a bus system which guides alternating voltage data and direct voltage in order to prepare a vehicle wiring system voltage for user terminals, in particular for the bus of the European Installation Bus Association. The transmission circuit operates with a transmission circuit operates with a transmission stage which includes as a transmission transistor, a transmission valve functioning as a transistor in the transmission circuit. Depending on the function, the selection line of this transmission circuit is reduced in terms of the control signal by a transistor of the inverse type to the transistor in the collector circuit as reducing transistor. A capacitor, as a separating filter for the direct voltage, is connected, on the one hand, to a connection for a bus conductor; and, on the other, to a voltage divider which is also connected to a reference voltage, a tap of the voltage divider being connected to the base of the reducing transistor.

摘要翻译： 总线耦合包括幅度控制传输电路，用于为包括用于引导交流电压数据和直流电压的总线系统的有效脉冲和均衡器脉冲的传输脉冲产生基本上矩形的有源脉冲，以便准备车辆接线系统电压 用于用户终端，特别是用于欧洲安装总线协会的总线。 发送电路以传输电路工作，其中传输电路包括作为传输晶体管的传输级，在传输电路中包括用作晶体管的传输阀。 根据该功能，该发送电路的选择线根据作为还原晶体管的集电极电路中的反相型晶体管的控制信号而减少。 作为用于直流电压的分离滤波器的电容器一方面连接到总线导体的连接; 另一方面，也连接到参考电压的分压器，分压器的抽头连接到还原晶体管的基极。

公开(公告)号：US06188974B1

公开(公告)日：2001-02-13

申请号：US09046229

申请日：1998-03-23

申请人： Jane Grace Kehoe Cullum ,  Albert Emil Ruehli

发明人： Jane Grace Kehoe Cullum ,  Albert Emil Ruehli

IPC分类号： G06G719

CPC分类号： G06F17/5036

摘要： A method comprising a computational procedure for obtaining reduced-order models of partial element equivalent circuit (PEEC) models of very large scale integrated (VLSI) interconnects. The methodology is not limited to PEEC applications, and can be used for generating reduced-order models of other systems which can be modeled with linear, time-invariant systems of ordinary differential equations with time delays.

摘要翻译： 一种包括用于获得非常大规模集成（VLSI）互连的部分元件等效电路（PEEC）模型的缩减模型的计算程序的方法。 该方法不限于PEEC应用，并且可用于生成可以用具有时间延迟的普通微分方程的线性时不变系统建模的其他系统的低阶模型。

公开(公告)号：US06456141B1

公开(公告)日：2002-09-24

申请号：US09922764

申请日：2001-08-07

申请人： Kazunori Nishizono ,  Tatsuo Kumano

发明人： Kazunori Nishizono ,  Tatsuo Kumano

IPC分类号： G06G719

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.

公开(公告)号：US06429719B1

公开(公告)日：2002-08-06

申请号：US09450070

申请日：1999-11-29

申请人： Junji Nakatsuka

发明人： Junji Nakatsuka

IPC分类号： G06G719

CPC分类号： G01L9/08

摘要： A signal processing circuit for a charge generation type detection device of the present invention includes a charge-voltage conversion circuit for converting a charge generated in the charge generation type detection device to a voltage. The charge-voltage conversion circuit includes: a first capacitor for storing the charge generated in the charge generation type detection device; an operational amplifier connected to the first capacitor to form a feed-back loop; and a first switch connected in parallel with the first capacitor for discharging the charge stored in the first capacitor. The first switch includes a first transistor for generating a first clock feed-through and a second transistor for generating a second clock feed-through, the first switch being configured so that at least a portion of the first clock feed-through is canceled by the second clock feed-through.

摘要翻译： 本发明的电荷产生型检测装置的信号处理电路包括：电荷电压转换电路，用于将电荷产生型检测装置中产生的电荷转换为电压。 电荷电压转换电路包括：第一电容器，用于存储在电荷产生型检测装置中产生的电荷; 连接到第一电容器的运算放大器以形成反馈回路; 以及与第一电容并联连接的第一开关，用于对存储在第一电容器中的电荷进行放电。 第一开关包括用于产生第一时钟馈通的第一晶体管和用于产生第二时钟馈通的第二晶体管，第一开关被配置为使得第一时钟馈通的至少一部分被 第二时钟馈通。

公开(公告)号：US06384590B1

公开(公告)日：2002-05-07

申请号：US09437155

申请日：1999-11-10

申请人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G06G719

CPC分类号： G01R13/347

摘要： In a light receiving circuit for use in electro-optic sampling oscilloscope which receives first and second optical, photodiodes 51 and 52 are connected in series between a positive bias power supply 50P and a negative bias power supply 50N. The photodiodes 51 and 52 receive optical signals whose polarization state correspond to the voltage of a signal to be measured and convert the thus-received optical signals into electric signals. An amplifier 53 amplifies an electric current appearing in a point of connection P between the photodiodes 51 and 52. A current monitor 54 detects the electric signal converted by the photodiode 51, and a current monitor 57 detects the electric signal converted by the photodiode 52. The electric signal detected by the current monitor 54 is subjected to analog-to-digital conversion by an analog-to-digital converter 55, and the electric signal detected by the current monitor 57 is subjected to analog-to-digital conversion by an analog-to-digital converter 58. A control section formed from a subtraction circuit 60 controls a ratio of polarization between the optical signals such that the difference between the value of the current detected by the current monitor 54 and the value of the current detected by the current monitor 57 becomes smaller.

摘要翻译： 在接收第一和第二光学电光采样示波器的光接收电路中，光电二极管51和52串联连接在正偏压电源50P和负偏压电源50N之间。 光电二极管51和52接收光信号，其偏振状态对应于待测信号的电压，并将所接收的光信号转换为电信号。 放大器53放大出现在光电二极管51和52之间的连接点P处的电流。电流监视器54检测由光电二极管51转换的电信号，电流监视器57检测由光电二极管52转换的电信号。 由电流监视器54检测的电信号由模数转换器55进行模数转换，由电流监视器57检测的电信号经模拟数字转换 数字转换器58.由减法电路60形成的控制部分控制光信号之间的偏振比，使得由电流监视器54检测的电流值与由电流检测器检测到的电流值之差 电流监视器57变小。

公开(公告)号：US06437638B1

公开(公告)日：2002-08-20

申请号：US09724854

申请日：2000-11-28

申请人： Charles Coles ,  Jon R. Roman

发明人： Charles Coles ,  Jon R. Roman

IPC分类号： G06G719

CPC分类号： G05F1/618

摘要： The present invention provides an apparatus and method for regulating an output to stabilize the output without limiting an output current. The regulator includes a stabilizing circuit coupled to a source circuit and a sink circuit. The source circuit is configured to source the output current to the output, and the sink circuit is configured to sink the output current from the output. The stabilizing circuit is configured to transition the source circuit and the sink circuit between a conductive state and a nonconductive state to stabilize the output based on the voltage difference between the output and a reference voltage. The source and sink circuits each include at least one N-channel MOSFET transistor to source and sink output current. The stabilizing circuit includes a first and second amplifier, where the first amplifier couples with the sink circuit to transition the sink circuit between the conductive and nonconductive states, and the second amplifier coupled with the source circuit to transition the source circuit between the conductive and nonconductive states.

摘要翻译： 本发明提供一种用于调节输出以稳定输出而不限制输出电流的装置和方法。 调节器包括耦合到源电路和吸收电路的稳定电路。 源极电路被配置为将输出电流输出到输出，并且吸收电路被配置为从输出端吸收输出电流。 稳定电路被配置为在导通状态和非导通状态之间转换源电路和吸收电路，以基于输出和参考电压之间的电压差来稳定输出。 源极和吸收电路各自包括至少一个N沟道MOSFET晶体管，用以对输出和吸收输出电流。稳定电路包括第一和第二放大器，其中第一放大器与吸收电路耦合，以使宿电路在导电和 非导通状态，并且第二放大器与源电路耦合以在导电状态和非导通状态之间转换源电路。

公开(公告)号：US06295547B1

公开(公告)日：2001-09-25

申请号：US09263484

申请日：1999-03-08

申请人： Xiaomang Zhang ,  Naoyuki Fukuda

发明人： Xiaomang Zhang ,  Naoyuki Fukuda

IPC分类号： G06G719

CPC分类号： G06J1/00

摘要： A Fourier transform apparatus includes: a signal generating section for generating a plurality of sine-wave signals and a plurality of cosine-wave signals; a plurality of analog circuits each having a respective circuit parameter corresponding to a respective Fourier coefficient, and each receiving the respective sine-wave signal and the respective cosine-wave signal which are generated by the signal generating section; and an operation section for performing an operation on each of outputs of the respective analog circuits and outputting the resultant respective analog signals.

摘要翻译： 傅立叶变换装置包括：信号产生部分，用于产生多个正弦波信号和多个余弦波信号; 多个模拟电路各自具有对应于相应的傅立叶系数的各个电路参数，并且各自接收由信号产生部分生成的相应的正弦波信号和各自的余弦波信号; 以及操作部分，用于对各个模拟电路的每个输出执行操作，并输出所得到的各个模拟信号。

公开(公告)号：US06294945B1

公开(公告)日：2001-09-25

申请号：US09496566

申请日：2000-02-02

申请人： Christopher G. Regier ,  Clayton Daigle

发明人： Christopher G. Regier ,  Clayton Daigle

IPC分类号： G06G719

CPC分类号： G06G7/1865

摘要： A system and method, wherein the dielectric absorption of a capacitor is cancelled by a compensating circuit. One embodiment uses a compensation circuit comprising a compensating capacitor with substantially identical characteristics as the capacitor to be compensated in an integrator circuit. The effects of the dielectric absorption of the capacitor in the integrator circuit are reduced or eliminated because the dielectric absorption of the compensating capacitor cancels the dielectric absorption of the capacitor in the integrator circuit. Another embodiment uses compensation circuitry to reduce or eliminate the effects of dielectric absorption in any particular capacitor. The compensation capacitor in the compensation circuitry has a higher rate of dielectric absorption and a lower capacitance value than the capacitor whose dielectric absorption effects are to be reduced or eliminated. In another embodiment, the effects of the dielectric absorption of a capacitor are reduced or eliminated by choosing a compensation capacitor in the compensation circuitry with the same dielectric absorption as the capacitor to be compensated. The dielectric absorption of the compensation capacitor is scaled by the resistors in the compensation circuitry which determine the gain of the amplifier in the compensation circuitry.

摘要翻译： 一种系统和方法，其中电容器的介电吸收由补偿电路消除。 一个实施例使用补偿电路，其包括具有基本相同特性的补偿电容器作为要在积分器电路中补偿的电容器。 由于补偿电容器的电介质吸收抵消积分电路中的电容器的介电吸收，所以减小或消除了积分器电路中电容器的介电吸收的影响。 另一实施例使用补偿电路来减少或消除任何特定电容器中介质吸收的影响。 补偿电路中的补偿电容器具有比电介质吸收效应要降低或消除的电容器更高的介电吸收率和较低的电容值。 在另一个实施例中，通过在具有与要补偿的电容器相同的介电吸收的补偿电路中选择补偿电容来减小或消除电容器的电介质吸收的影响。 补偿电容器的介电吸收由补偿电路中的电阻器来确定放大器在补偿电路中的增益。