All-digital speaker system device
    1.
    发明公开
    All-digital speaker system device 审中-公开
    全数字扬声器系统设备

    公开(公告)号:EP2445228A3

    公开(公告)日:2015-08-26

    申请号:EP11185977.3

    申请日:2011-10-20

    摘要: The present invention disclosed an all-digital speaker system device based on multi-bit Σ-Δ Modulation, comprising an A/D converter, an interpolation filter, a Σ-Δ modulator, a dynamic mismatch regulator, a differential buffer and a speaker array. The present invention takes advantage of the Σ-Δ modulation technique to effectively reduce the cost and complexity of the hardware realization of the speaker system device, thus realizing the full digitalization of the whole sound transmission link and the integration of the system device with low power dissipation and volume. Furthermore, the system device according to the present invention is provided with a better control ability on the local sound field, thus providing a better practicable method for the voice secret transmission.

    Two-stage analog-to-digital converter for high-speed image sensor
    4.
    发明公开
    Two-stage analog-to-digital converter for high-speed image sensor 审中-公开
    Zweistufiger Analog / Digital-WandlerfürHochgeschwindigkeitsbildsensor

    公开(公告)号:EP2696506A1

    公开(公告)日:2014-02-12

    申请号:EP12179815.1

    申请日:2012-08-09

    IPC分类号: H03M3/02

    摘要: The present invention relates to a two- or multiple-stage analog to digital converter (300). The converter preferably includes an incremental ADC (200) in the first stage. The incremental ADC (200) comprises an integrator (210) and a comparator (220). After the predefined number of comparisons performed by the comparator (220), the output of the integrator (210) appropriately scaled (g) is provided to the second stage (310, 320, 330) where it is further sampled (320). In particular, the scaling gain (310) is inversely proportional to the integrator gain (g). The second ADC (330) performs the conversion of the remaining least significant bits (D2) and then the output of both stages (D1, D2) is combined (340, 350). Moreover, a calibration and correction approaches are provided for the multi-stage ADC.

    摘要翻译: 本发明涉及一种二级或多级模数转换器(300)。 转换器优选地包括在第一级中的增量ADC(200)。 增量ADC(200)包括积分器(210)和比较器(220)。 在由比较器(220)执行的预定数量的比较之后,对第二级(310,320,330)进行适当缩放(g)的积分器(210)的输出被提供进一步采样(320)。 特别地,缩放增益(310)与积分器增益(g)成反比。 第二ADC(330)执行剩余的最低有效位(D2)的转换,然后组合两个级(D1,D2)的输出(340,350)。 此外,为多级ADC提供校准和校正方法。

    A/D CONVERTER, IMAGE SENSOR DEVICE, AND METHOD OF GENERATING DIGITAL SIGNAL FROM ANALOG SIGNAL
    5.
    发明公开
    A/D CONVERTER, IMAGE SENSOR DEVICE, AND METHOD OF GENERATING DIGITAL SIGNAL FROM ANALOG SIGNAL 审中-公开
    A / D-WANDLER,BILDSENSORVORRICHTUNG UND VERFAHREN ZUR ERZEUGUNG DIGITALER SIGNALE AUS ANALOGEN SIGNALEN

    公开(公告)号:EP2677661A1

    公开(公告)日:2013-12-25

    申请号:EP12747652.1

    申请日:2012-02-17

    发明人: KAWAHITO Shoji

    IPC分类号: H03M1/14

    摘要: An object of this invention is to realize, with a single-ended configuration, an A/D converter which performs integral A/D conversion, and cyclic A/D conversion of a residual analog signal thereof. According to this A/D converter, a first A/D conversion operation for performing integral A/D conversion and a second A/D conversion operation for performing cyclic A/D conversion are realized based on control of operational procedures in a same circuit configuration. Moreover, in the first A/D conversion operation, since a capacity of a capacitor used in the integration of an output signal is greater than a capacity of a capacitor used for storing an input analog signal and a standard reference voltage, the analog signal that is input in the integral A/D conversion is attenuated according to the capacity ratio and subject to sampling and integration. Consequently, the voltage range of the analog signal that is output in the integral A/D conversion also decreases according to the capacity ratio of the capacitors, and the A/D converter can be therefore constructed with a single-ended configuration.

    摘要翻译: 本发明的目的是通过单端配置来实现进行整合A / D转换的A / D转换器及其残留模拟信号的循环A / D转换。 根据该A / D转换器,通过对相同的电路配置中的操作程序的控制来实现用于执行整合A / D转换的第一A / D转换操作和用于执行循环A / D转换的第二A / D转换操作 。 此外,在第一A / D转换操作中,由于在输出信号的积分中使用的电容器的容量大于用于存储输入模拟信号和标准参考电压的电容器的容量,所以模拟信号 在积分A / D转换中输入根据容量比衰减并进行采样和积分。 因此,在积分A / D转换中输出的模拟信号的电压范围也根据电容器的容量比而减小,因此可以以单端配置构建A / D转换器。

    A/D CONVERTER AND A/D CONVERTING METHOD
    6.
    发明公开
    A/D CONVERTER AND A/D CONVERTING METHOD 有权
    A / D转换器和A / D实施过程

    公开(公告)号:EP2027654A1

    公开(公告)日:2009-02-25

    申请号:EP07715075.3

    申请日:2007-02-22

    发明人: WATANABE, Hikaru

    IPC分类号: H03M1/14 H03M3/02

    CPC分类号: H03M3/35 H03M3/326 H03M3/46

    摘要: Each of plural sigma-delta modulators (M1, M2) having a sampling capacitor (CS11, CS12, CS21, CS22), an integrator (Amp1, Amp2), and a quantizer (Cmp1..Cmp5) are connected to each other in parallel. Each of the sigma-delta modulators conducts parallel oversampling in which an analog input signal (Vin) is sampled by a sampling capacitor, and the sampling result is quantized by the integrator and the quantizer. Then, the quantized values of the sigma-delta modulators are added to obtain MSBs, the residue values of the integrators after quantizing in the respective sigma-delta modulators are added, and the addition result of the residue values is converted analog-to-digital to obtain LSBs.

    Convertisseur analogique-numérique pipeline avec mise en forme de bruit
    8.
    发明公开

    公开(公告)号:EP1156586A1

    公开(公告)日:2001-11-21

    申请号:EP01401228.0

    申请日:2001-05-14

    IPC分类号: H03M1/14 H03M3/02

    CPC分类号: H03M3/46 H03M1/164

    摘要: L'invention concerne un convertisseur analogique/numérique incluant un premier module (100) du type ayant une série d'étages de traitement, ces étages de traitement réalisant chacun deux conversions d'abord analogique/numérique puis numérique/analogique du signal de sortie de l'étage précédent, puis une soustraction du signal ainsi obtenu au signal de sortie de l'étage précédent pour fournir ainsi le signal de sortie analogique dudit étage, ledit premier module (100) comportant en outre des moyens pour assembler les signaux numérisés par chaque étage (S 1 ..., S i ) afin de former un signal numérique (S N (nT)) qui représente sous une forme numérique le signal d'entrée (e(nT)) du convertisseur, caractérisé en ce que le convertisseur inclut en outre un modulateur delta-sigma (210) qui numérise le signal de sortie (b(nT)) d'un desdits étages ainsi que des moyens pour soustraire le signal ainsi numérisé audit signal numérique assemblé (S N (nT)).

    摘要翻译: 模拟数字转换器包括具有一系列双重模式(即模拟数字和数字模拟)处理级的模块(100),其给出表示输入信号e(nT)的数字信号SN(nT),以及 通过在各级中减去前一级的输出信号而获得的误差或噪声信号b(nT)。 该转换器还包括一个Δ-Σ调制器(210),它将噪声信号b(nT)数字化,以及用于从相乘后的数字信号S(nT)中减去数字化噪声信号的相反符号的装置 通过信号传递函数STF(nT)。 Δ-Σ调制器(210)被放置在流水线模块(100)的最后级的误差输出端,并且转换器包括用于去除delta-Σ调制器的装置。 该转换器包括几个Δ-Σ调制器,每个数字化一个级的输出信号,用于切换的装置,以激活该组中的一个Δ-Σ调制器,以及一个放置在下游的十进制滤波器以组合数字化信号 。 包括用于选择用于发送或接收的频带的装置的通信终端包括提出类型的转换器。 用于将输入信号c(nT)的模拟数字转换实现为输出信号yN(nT)的方法包括由Δ-Σ调制器对结果信号bnT进行数字化,以及从数字信号中减去数字化信号 信号SN(nT)乘以信号传递函数STF(nT)。

    ANALOG-TO-DIGITAL CONVERTER WITH NOISE SHAPING
    9.
    发明公开
    ANALOG-TO-DIGITAL CONVERTER WITH NOISE SHAPING 审中-公开
    模拟数字转换器噪声整形

    公开(公告)号:EP3293884A1

    公开(公告)日:2018-03-14

    申请号:EP17190080.6

    申请日:2017-09-08

    申请人: MediaTek Inc.

    发明人: LIU, Chun-Cheng

    IPC分类号: H03M3/02 H03M1/46

    摘要: An analog-to-digital converter (ADC) using an amplifier-based noise shaping circuit. The amplifier-based noise shaping circuit generates a noise shaping signal. A comparator of the ADC has a first input terminal coupled to an output terminal of a capacitive data acquisition converter that captures an analog input, a second input terminal receiving the noise shaping signal, and an output terminal for observation of the digital representation of the analog input. The amplifier-based noise shaping circuit uses an amplifier to amplify a residual voltage obtained from the capacitive data acquisition converter and provides a switched capacitor network between the amplifier and the comparator for sampling the amplified residual voltage and generating the noise shaping signal.

    摘要翻译: 一个模数转换器(ADC),使用基于放大器的噪声整形电路。 基于放大器的噪声整形电路产生噪声整形信号。 ADC的比较器具有耦合到电容数据采集转换器的输出端子的第一输入端子,所述电容数据采集转换器捕获模拟输入,接收噪声整形信号的第二输入端子和用于观测模拟数字表示的输出端子 输入。 基于放大器的噪声整形电路使用放大器来放大从电容数据采集转换器获得的剩余电压,并在放大器和比较器之间提供开关电容器网络,用于采样放大的剩余电压并生成噪声整形信号。