公开(公告)号：EP2096759A4

公开(公告)日：2012-01-18

申请号：EP08702828

申请日：2008-01-25

Applicant: PANASONIC CORP

Inventor： MURAKAMI HIDEYUKI ,  KAWAI TAKASHI ,  NABETANI KOUJI

IPC: H03M3/02 ,  G01C19/56 ,  G01C19/5614

CPC classification number: G01C19/56 ,  G01C19/5649 ,  H03M3/326 ,  H03M3/368 ,  H03M3/43 ,  H03M3/456 ,  H03M3/474 ,  H03M3/486 ,  H03M3/49

Abstract: An angular velocity sensor with a stable output characteristic using a sigma-delta type analog-to-digital converter comprising an integrator unit (62) for integrating electric charges output from an input switching device (44) and a digital-to-analog converter unit (48) and holding at least two integrated values, a comparator unit (63) for comparing at least the two integrated values output from the integrator unit (62) with a predetermined value, and an arithmetic operation unit (73) for operating an output signal of the comparator unit (63), the arithmetic operation unit (73) provided with a differential operation unit (70) for computing a difference between at least two comparison signals output from comparator unit (63).

Abstract translation: 一种使用Σ-Δ型模数转换器具有稳定输出特性的角速度传感器，包括用于积分从输入开关装置（44）输出的电荷的积分器单元（62）和数模转换器单元 （48）并且保持至少两个积分值;比较器单元（63），用于将从积分器单元（62）输出的至少两个积分值与预定值进行比较;以及算术运算单元（73），用于操作输出 比较器单元（63）的信号，算术运算单元（73），具有用于计算从比较器单元（63）输出的至少两个比较信号之间的差的差分运算单元（70）。

公开(公告)号：EP1876715B1

公开(公告)日：2011-11-30

申请号：EP07111883.0

申请日：2007-07-05

Applicant: Linear Technology Corporation

Inventor： Oprescu, Florin A.

IPC: H03M1/12

CPC classification number: H03M3/49 ,  H03M3/43 ,  H03M3/456

公开(公告)号：EP2064621B1

公开(公告)日：2011-10-26

申请号：EP07804226.4

申请日：2007-09-11

Applicant: GS IP Limited Liability Company

Inventor： MACAULAY, John Duncan Robert ,  COLMER, Morgan

IPC: G06F7/58 ,  H03M3/02

CPC classification number: G06F7/588 ,  H03M3/348 ,  H03M3/43 ,  H03M3/456

Abstract: A random number generator comprising a sigma-delta modulator, the sigma- delta modulator having a modulation unit comprising: a summation unit arranged to receive an analogue input signal that varies due to noise over a first voltage range, the summation unit being arranged to sum the analogue input signal with an adjustment signal to form a summation output signal; a loop filter arranged to receive the summation output signal and form a filtered output signal dependent thereon; and a quantiser arranged to receive the filtered output signal, compare the filtered output signal with a quantiser threshold and form a digital output signal by selecting between one of two predetermined voltage levels for the digital output signal in dependence on the comparison; and the sigma-delta modulator further comprising: a feedback loop arranged to receive the digital output signal and form the adjustment signal in dependence on the digital output signal such that at any given time instant the absolute difference between an amplitude of the summation output signal and the quantiser threshold is less than the first voltage range, the random number generator thereby being capable of forming a digital output signal derived from the analogue input signal and having a high degree of entropy.

Abstract translation: 1.一种包括Σ-Δ调制器的随机数发生器，所述Σ-Δ调制器具有调制单元，所述调制单元包括：求和单元，被配置为接收由于噪声而在第一电压范围上变化的模拟输入信号，所述求和单元被设置为将 所述模拟输入信号与调节信号一起形成求和输出信号; 环路滤波器，用于接收所述求和输出信号并形成与之相关的经滤波的输出信号; 以及量化器，其布置成接收经滤波的输出信号，将经滤波的输出信号与量化器阈值进行比较，并通过依据比较在数字输出信号的两个预定电压电平中的一个之间进行选择而形成数字输出信号; 并且所述西格玛 - 德尔塔调制器还包括：反馈回路，被布置为接收所述数字输出信号并且根据所述数字输出信号形成所述调节信号，使得在任何给定的时刻，所述总和输出信号的幅度与 量化器阈值小于第一电压范围，因此随机数发生器能够形成从模拟输入信号导出并具有高熵度的数字输出信号。

公开(公告)号：EP2351227A2

公开(公告)日：2011-08-03

申请号：EP09740614.4

申请日：2009-10-22

Applicant: Microchip Technology Incorporated

Inventor： QUIQUEMPOIX, Vincent ,  DEVAL, Philippe

IPC: H03M3/00

CPC classification number: H03M3/34 ,  H03M3/424 ,  H03M3/456 ,  H03M3/464

Abstract: A multi-bit digital-to-analog converter has a reference voltage generator generating a reference voltage with an offset voltage; a.switched capacitor stage for generating a plurality of output voltages; and a switching sequencer controlling the switched capacitor stage operable to generate switching patterns for each output voltages, wherein each pattern has a charge phase and a transfer phase, and wherein for at least one output voltage the switching sequencer provides two switching patterns wherein each switching pattern contributes an offset of opposite polarity.

公开(公告)号：EP2343808A2

公开(公告)日：2011-07-13

申请号：EP11161019.2

申请日：2005-10-17

Applicant: Linear Technology Corporation

Inventor： Oprescu, Florin A.

IPC: H03M1/00 ,  H03M3/02

CPC classification number: H03M3/322 ,  H03M3/43 ,  H03M3/456 ,  H03M3/496

Abstract: The invention is directed to a novel sampling system having a sampling device responsive to an analog input signal and a reference signal for providing corresponding charges. A switching circuit is provided to supply the input signal and the reference signal to the sampling device. The switching circuit is controlled to supply the input signal and the reference signal to the sampling device so as provide a substantially zero total charge taken by the sampling device from a source of the input signal. One application of the foregoing is in analog-to-digital conversion.

Abstract translation: 本发明涉及一种具有响应于模拟输入信号的采样装置和用于提供相应电荷的参考信号的新型采样系统。 提供开关电路以将输入信号和参考信号提供给采样装置。 控制切换电路以将输入信号和参考信号提供给采样装置，以便从输入信号的源提供由采样装置采取的基本上零的总电荷。 上述的一个应用是在模数转换中。

公开(公告)号：EP1335532B1

公开(公告)日：2011-05-11

申请号：EP03002972.2

申请日：2003-02-11

Applicant: Broadcom Corporation

Inventor： Lambert, Russell H.

IPC: H03M3/02 ,  H03M7/00 ,  H04W84/12

CPC classification number: H04W88/06 ,  H03M3/332 ,  H03M3/334 ,  H03M3/336 ,  H03M3/43 ,  H03M3/456 ,  H03M3/50 ,  H03M7/3008 ,  H03M7/3028 ,  H03M7/304 ,  H04W84/12

公开(公告)号：EP2096759A1

公开(公告)日：2009-09-02

申请号：EP08702828.8

申请日：2008-01-25

Applicant: Panasonic Corporation

Inventor： MURAKAMI, Hideyuki ,  KAWAI, Takashi ,  NABETANI, Kouji

IPC: H03M3/02 ,  G01C19/56 ,  G01P9/04

CPC classification number: G01C19/56 ,  G01C19/5649 ,  H03M3/326 ,  H03M3/368 ,  H03M3/43 ,  H03M3/456 ,  H03M3/474 ,  H03M3/486 ,  H03M3/49

Abstract: An angular velocity sensor with a stable output characteristic using a sigma-delta type analog-to-digital converter comprising an integrator unit (62) for integrating electric charges output from an input switching device (44) and a digital-to-analog converter unit (48) and holding at least two integrated values, a comparator unit (63) for comparing at least the two integrated values output from the integrator unit (62) with a predetermined value, and an arithmetic operation unit (73) for operating an output signal of the comparator unit (63), the arithmetic operation unit (73) provided with a differential operation unit (70) for computing a difference between at least two comparison signals output from comparator unit (63).

公开(公告)号：EP2088677A1

公开(公告)日：2009-08-12

申请号：EP09151502.3

申请日：2009-01-28

Applicant: O2Micro, Inc.

Inventor： Li, Guo Xing

IPC: H03M3/02

CPC classification number: H03M3/474 ,  H03M3/43 ,  H03M3/456

Abstract: An analog to digital converter (ADC) converts an analog signal to a digital signal. The ADC includes an input channel, a sampling circuit coupled to the input channel, an integrator coupled to the sampling circuit, and a feedback circuit coupled to the integrator. The input channel receives the analog signal. The sampling circuit samples the analog signal. The integrator receives the sampled analog signal and a feedback signal and integrates a superposition of the sampled analog signal and the feedback signal. The feedback circuit generates the digital signal according to an output of the integrator and sends the feedback signal indicative of the digital signal to the integrator.

Abstract translation: 模数转换器（ADC）将模拟信号转换为数字信号。 ADC包括输入通道，耦合到输入通道的采样电路，耦合到采样电路的积分器和耦合到积分器的反馈电路。 输入通道接收模拟信号。 采样电路对模拟信号进行采样。 积分器接收采样的模拟信号和反馈信号，并且对采样的模拟信号和反馈信号的叠加进行积分。 反馈电路根据积分器的输出产生数字信号，并将表示数字信号的反馈信号发送到积分器。

公开(公告)号：EP2027655A1

公开(公告)日：2009-02-25

申请号：EP07733172.6

申请日：2007-06-11

Applicant: GS IP Limited Liability Company

Inventor： COLMER, Morgan, James

IPC: H03M3/02 ,  H03M3/04

CPC classification number: H03M3/484 ,  H03M3/456

Abstract: A sigma-delta modulator for forming a digital output signal representative of the magnitude of an analogue input signal, the modulator comprising a modulation unit comprising: a summation unit for summing the analogue input signal with an adjustment signal to form a summation output signal; an integrator arranged to receive the summation output signal and form an integrator output signal dependent thereon; and a quantiser arranged to receive the integrator output signal and form the digital output signal dependent thereon; the sigma-delta modulator further comprising a feedback loop for generating the adjustment signal and comprising a selection circuit arranged to form the adjustment signal by selecting between one of two boundary values for the adjustment signal, the selection being performed in dependence on the digital output signal.

公开(公告)号：EP1810406A4

公开(公告)日：2009-01-07

申请号：EP05812383

申请日：2005-10-17

Applicant: LINEAR TECHN INC

Inventor： OPRESCU FLORIN A

IPC: H03M1/00 ,  H03M3/02

CPC classification number: H03M3/322 ,  H03M3/43 ,  H03M3/456 ,  H03M3/496

Abstract: A novel sampling system having a sampling device responsive to an analog input signal and a reference signal for providing corresponding charges. A switching circuit is provided to supply the input signal and the reference signal to the sampling device. The switching circuit is controlled to supply the input signal and the reference signal to the sampling device so as provide a substantially zero total charge taken by the sampling device from a source of the input signal. One application of the foregoing is in analog-to-digital conversion.