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    • 6. 发明申请
    • EQUALIZER CIRCUIT AND RECEPTION APPARATUS
    • 均衡器电路和接收装置
    • US20110068847A1
    • 2011-03-24
    • US12876880
    • 2010-09-07
    • Takayuki HAMADAHirotaka Tamura
    • Takayuki HAMADAHirotaka Tamura
    • G06G7/19
    • G06G7/19
    • An equalizer circuit includes: a plurality of amplifiers that convert a voltage signal into a current; a plurality of capacitive loads that are charged and discharged in accordance with respective outputs of the plurality of amplifiers; a charge discharge circuit provided for each of the plurality of capacitive loads to charge or discharge one of the plurality of capacitive loads; and a reset circuit provided for each of the capacitive loads to initialize the charge stored in the one of the plurality of capacitive loads, wherein a current according to the voltage signal is integrated in different periods for each of the plurality of capacitive loads and the capacitive load is discharged through the current in a first period and the capacitive load is charged through the current in a second period following the first period.
    • 均衡器电路包括:将电压信号转换为电流的多个放大器; 根据所述多个放大器的相应输出充电和放电的多个电容性负载; 为所述多个电容性负载中的每一个提供充电或放电所述多个电容性负载中的一个的充电放电电路; 以及为每个容性负载提供的复位电路,以初始化存储在所述多个电容性负载中的一个电容负载中的电荷,其中根据所述电压信号的电流针对所述多个容性负载中的每一个和所述电容负载的不同周期被积分 负载在第一周期内通过电流放电,并且在第一周期之后的第二周期中通过电流对电容负载进行充电。
    • 7. 发明授权
    • Method for analyzing a digital-to-analog converter with a nonideal
analog-to-digital converter
    • 用非理想模数转换器分析数模转换器的方法
    • US4335373A
    • 1982-06-15
    • US264928
    • 1981-05-18
    • Edwin A. Sloane
    • Edwin A. Sloane
    • H03M1/10G06G7/19H03M1/00H03K13/02
    • G06G7/19H03M1/1071
    • A method for statistically calibrating a digital-to-analog converter with an electronic test system. The digital-to-analog converter is excited with two state signals at each input bit which together represent a single signal with uniform amplitude probability with respect to time, and wherein each excitation signal is orthogonal with respect to all other excitation signals. The output of the digital-to-analogconverter is detected by an analog-to-digital converter which has been calibrated by premeasured weighting coefficients with respect to two-state orthogonal signals. The digital time domain output signals are then mapped into a transform domain to obtain weighting coefficients of each bit of the output response. Finally the transform domain weighting coefficients are weighted by the reciprocal of the premeasured weighting coefficients to obtain the unbiased weight of each bit of the digital-to-analog converter under test. A preferred set of excitation signals is a set of Walsh function signals representing the digital equivalent of a linear ramp function.
    • 一种用电子测试系统对数模转换器进行统计校准的方法。 数模转换器在每个输入比特处的两个状态信号被激励,它们一起表示相对于时间具有均匀振幅概率的单个信号,并且其中每个激励信号相对于所有其它激励信号是正交的。 数模转换器的输出由已经通过相对于两状态正交信号的预先测量的加权系数校准的模数转换器来检测。 然后将数字时域输出信号映射到变换域中,以获得输出响应的每个位的加权系数。 最后,通过预先测量的加权系数的倒数对变换域加权系数进行加权,以获得待测数字模拟转换器的每个位的无偏置权重。 优选的一组激励信号是表示线性斜坡函数的数字等价物的沃尔什函数信号的集合。
    • 8. 发明申请
    • ANALOG IMPLEMENTATION OF LINEAR TRANSFORMS
    • 线性变换的模拟实现
    • WO2004066080A2
    • 2004-08-05
    • PCT/US2004001448
    • 2004-01-21
    • TINKER FRANK A
    • TINKER FRANK A
    • H04L27/26G06F
    • G06G7/19H04L27/263
    • Analog phase-shift elements (10) connect each of a plurality of input nodes (1-M) to each of a plurality of output nodes (1-N), wherein each component is adapted to produce a phase shift in a periodic signal processed therethrough. A linear transformation of a data set of discrete values of a given function provided as a set of analog signals to the input nodes is achieved by judiciously adjusting the signal amplitude produced at the output of the phase-shift components and summing the resulting output signals as required to simulate the transformation of interest.
    • 模拟相移元件(10)将多个输入节点(1-M)中的每一个连接到多个输出节点(1-N)中的每一个,其中每个分量适于在处理的周期信号中产生相移 穿过。 通过明智地调整在相移分量的输出处产生的信号幅度并将所得到的输出信号相加,从而获得作为一组模拟信号提供给输入节点的给定功能的离散值的数据集的线性变换, 需要模拟兴趣的转变。
    • 10. 发明申请
    • ANALOG COMPUTATION
    • 模拟计算
    • US20130080497A1
    • 2013-03-28
    • US13482112
    • 2012-05-29
    • Eric NestlerVladimir Zlatkovic
    • Eric NestlerVladimir Zlatkovic
    • G06F17/14
    • H03H15/02G01D5/24G01R27/2605G01R31/028G06F17/14G06G7/19
    • Some general aspects of the invention relate to a circuit and to a method for analog computation, for example, using switched capacitor integrated circuits. In some examples, a circuit includes a first group of capacitors and a second group of capacitors that may store charges during circuit operation. The first and/or the second group of capacitors may include multiple disjoint subsets of capacitors. An input circuit is provided for receiving a set of input signals and for inducing a charge on each of some or all capacitors in the first group of capacitors according to a corresponding input signal. Switches, for example, transistors controlled by a sequence of clock signals, are used to couple different sets of capacitors. Different configurations of the switches are used to form different sets of the capacitors among which charge can redistribute.
    • 本发明的一些一般方面涉及电路和模拟计算的方法,例如使用开关电容器集成电路。 在一些示例中,电路包括第一组电容器和可在电路操作期间存储电荷的第二组电容器。 第一和/或第二组电容器可以包括电容器的多个不相交的子集。 提供输入电路,用于根据相应的输入信号接收一组输入信号并用于在第一组电容器中的一些或全部电容器的每一个上感应电荷。 开关,例如,由一系列时钟信号控制的晶体管,用于耦合不同组的电容器。 开关的不同配置用于形成不同的电容器组,其中电荷可重新分布。