公开(公告)号：EP2654208A2

公开(公告)日：2013-10-23

申请号：EP13002092.8

申请日：2013-04-22

Applicant: Linear Technology Corporation

Inventor： Steensgaard-Madsen, Jesper

IPC: H03M1/06 ,  H03M1/46

CPC classification number: H03M1/201 ,  H03M1/0641 ,  H03M1/0668 ,  H03M1/462 ,  H03M1/468

Abstract: An analog-to-digital converter (ADC) system and method. The ADC system in accord with one embodiment includes a sampling digital-to-analog converter configured to sample a combination of an analog signal value and an analog dither value, and a control circuit comprising a mismatch-shaping encoder. The control circuit is configured to sequentially apply a plurality of digital codes to the sampling digital-to-analog converter during an analog-to-digital conversion operation to derive a digital code representing the combination of the analog signal value and the analog dither value. Several embodiments are presented.

Abstract translation: 一种模数转换器（ADC）系统和方法。 根据一个实施例的ADC系统包括被配置为对模拟信号值和模拟抖动值的组合进行采样的采样数模转换器，以及包括失配整形编码器的控制电路。 控制电路被配置为在模数转换操作期间将多个数字代码顺序地应用于采样数模转换器，以导出表示模拟信号值和模拟抖动值的组合的数字代码。 呈现了几个实施例。

公开(公告)号：EP2405578A3

公开(公告)日：2012-12-12

申请号：EP11168860.2

申请日：2011-06-07

Applicant: Tanita Corporation

Inventor： Nakada, Masato

IPC: H03M1/06 ,  H03M1/20 ,  H03M1/12

CPC classification number: H03M1/201

Abstract: An AD conversion apparatus includes a shift signal generating portion configured to generate n shift signals ( n is a natural number greater than one) of which amplitudes are different from each other; a shift signal controlling portion configured to control the shift signal generating portion; a compounding portion configured to compound input analog signal and the n shift signals sequentially into n first signals; an AD converting portion configured to execute AD conversion to convert the n first signals into n second signals; and a signal processing portion configured to calculate an average of the n second signals to generate output digital signal.

Abstract translation: AD转换装置包括：移位信号生成部，被配置为生成振幅彼此不同的n个移位信号（n是大于1的自然数）; 移位信号控制部，被配置为控制所述移位信号生成部; 复合部，被配置为将输入模拟信号和所述n个移位信号顺序地复合到n个第一信号中; AD转换部分，被配置为执行AD转换以将n个第一信号转换为n个第二信号; 以及信号处理部，被配置为计算n个第二信号的平均值以产生输出数字信号。

公开(公告)号：EP0898813A4

公开(公告)日：2001-04-18

申请号：EP97952555

申请日：1997-12-18

Applicant: QUANTUM CORP

Inventor： PATAPOUTIAN ARA ,  FISHER KEVIN D ,  BUCH BRUCE D

IPC: G11B5/55 ,  G11B5/596 ,  G11B20/10 ,  G11B20/12 ,  G11B21/08 ,  G11B21/10 ,  H03M1/20 ,  H03M1/48

CPC classification number: G11B5/59605 ,  G11B5/5547 ,  G11B5/59655 ,  G11B20/10009 ,  G11B20/1258 ,  G11B21/085 ,  G11B21/106 ,  H03M1/201

Abstract: An analog to digital converter circuit (20) in a sampling data detection channel of a disk drive synchronously samples user data in a data track areas at a first quantization resolution and samples servo bursts from the spoke areas at a second quantization resolution effectively greater than said first quantization resolution. An offset circuit (60) provides a predetermined analog offset signal to a combining circuit (160, 170) which combines it with an incoming analog signal to provide a composite signal during a servo burst sampling interval. An analog to digital converter (180, 190) samples the composite signal during the servo spoke burst sampling interval, and synchronously samples the analog signal during a user data sampling interval. A digital averaging circuit (210) averages the servo spoke samples over a predetermined averaging interval to provide averaged burst samples having increased bit resolution.

Abstract translation: 磁盘驱动器的采样数据检测通道中的模拟 - 数字转换器电路以第一量化分辨率同步采样数据轨道区域中的用户数据，并且以比第一量化分辨率有效地大的第二量化分辨率从轮辐区域采样伺服脉冲串 量化分辨率。 偏移电路向组合电路提供预定的模拟偏移信号，该组合电路将其与输入模拟信号组合，以在辐射伺服脉冲串采样间隔期间提供复合信号。 模数转换器在伺服轮询突发采样间隔期间对复合信号进行采样，并在用户数据采样间隔期间同步采样模拟信号。 数字平均电路在预定的平均间隔上对伺服轮辐样本进行平均，以提供具有增加的比特分辨率的平均突发样本。

公开(公告)号：EP0898813A1

公开(公告)日：1999-03-03

申请号：EP97952555.0

申请日：1997-12-18

Applicant: QUANTUM CORPORATION

Inventor： PATAPOUTIAN, Ara ,  FISHER, Kevin, D. ,  BUCH, Bruce, D.

IPC: G11B5 ,  G11B20 ,  G11B21 ,  H03M1

CPC classification number: G11B5/59605 ,  G11B5/5547 ,  G11B5/59655 ,  G11B20/10009 ,  G11B20/1258 ,  G11B21/085 ,  G11B21/106 ,  H03M1/201

Abstract: An analog to digital converter circuit (20) in a sampling data detection channel of a disk drive synchronously samples user data in a data track areas at a first quantization resolution and samples servo bursts from the spoke areas at a second quantization resolution effectively greater than said first quantization resolution. An offset circuit (60) provides a predetermined analog offset signal to a combining circuit (160, 170) which combines it with an incoming analog signal to provide a composite signal during a servo burst sampling interval. An analog to digital converter (180, 190) samples the composite signal during the servo spoke burst sampling interval, and synchronously samples the analog signal during a user data sampling interval. A digital averaging circuit (210) averages the servo spoke samples over a predetermined averaging interval to provide averaged burst samples having increased bit resolution.

公开(公告)号：EP0685743A1

公开(公告)日：1995-12-06

申请号：EP95401162.3

申请日：1995-05-19

Applicant: SCHLUMBERGER INDUSTRIES S.A.

Inventor： Dubin, Michel

IPC: G01R21/127 ,  H03M1/20

CPC classification number: G01R15/18 ,  G01R21/133 ,  H03M1/201

Abstract: A current measurement circuit comprising a mutual inductance transformer (3), an integration circuit (2), and a dither circuit (1) which adds a square wave to the signal from the transformer (3) before the input of the integration circuit (2) in order that the integration circuit (2) provides a signal representing the measured current perturbed by a triangular dither signal.

Abstract translation: 一种电流测量电路，包括在积分电路（2）的输入之前将来自变压器（3）的信号加方波的互感变压器（3），积分电路（2）和抖动电路（1） ），以便积分电路（2）提供表示由三角形抖动信号扰动的测量电流的信号。

公开(公告)号：EP0613256A1

公开(公告)日：1994-08-31

申请号：EP93400496.1

申请日：1993-02-26

Applicant: SCHLUMBERGER INDUSTRIES S.A.

Inventor： Morrison, Gary

IPC: H03M1/06 ,  H03M1/20 ,  G01R19/25

CPC classification number: G01R19/25 ,  G01R21/133 ,  H03M1/201

Abstract: A system for analogue to digital conversion comprising a means (4) for receiving an input analogue signal, a dither means for adding a dither signal and an analogue to digital converter (2) for converting the combined input signal and dither signal to a digital value, characterised in that the dither means provides a dither signal of a form comprising a first periodic dither signal having superimposed and being shaped by a second signal having at least one component which varies the first periodic dither signal over at least one quantisation interval of the analogue to digital converter.

Abstract translation: 一种用于模拟到数字转换的系统，包括用于接收输入模拟信号的装置（4），用于添加抖动信号的抖动装置和用于将组合输入信号和抖动信号转换成数字值的模数转换器（2） 其特征在于，所述抖动装置提供包括第一周期性抖动信号的抖动信号，所述第一周期性抖动信号具有叠加并被第二信号整形，所述第二信号具有至少一个分量，所述至少一个分量在模拟信号的至少一个量化间隔上改变第一周期性抖动信号 到数字转换器。

公开(公告)号：EP0550990A2

公开(公告)日：1993-07-14

申请号：EP92311563.8

申请日：1992-12-17

Applicant: Hewlett-Packard Company

Inventor： Hiller, Donald R.

IPC: H03M1/06

CPC classification number: H03M1/0641 ,  H03H21/0012 ,  H03M1/0604 ,  H03M1/1215 ,  H03M1/144 ,  H03M1/201

Abstract: A circuit (40) for analog-to-digital conversion is disclosed comprising multiplexed ADCs (44, 46). Dithering (16) is introduced (20) into the circuit before conversion and subtracted out (26) of the resulting digital output stream. Gain control feedback loops (50, 51, 52, 54) are employed to eliminate non-unity gain error of the dither signal and multiplexed ADC differential gain errors. Correlation (52) between the digital output stream and the dither signal is used to detect a non-unity condition and derive gain control feedback. Correlation with the dither signal is also used to detect gain differences between multiplexed ADCs and generate corrective feedback.

Abstract translation: 公开了一种用于模数转换的电路（40），包括多路复用ADC（44,46）。 将抖动（16）在转换之前引入电路（20）并减去所得数字输出流（26）。 采用增益控制反馈环路（50,51,52,54）来消除抖动信号的非单位增益误差和多路复用的ADC差分增益误差。 使用数字输出流和抖动信号之间的相关（52）来检测非单位条件并导出增益控制反馈。 与抖动信号的相关性也用于检测复用ADC之间的增益差异，并产生校正反馈。

公开(公告)号：EP0520662A2

公开(公告)日：1992-12-30

申请号：EP92305475.3

申请日：1992-06-15

Applicant: TDK Corporation

Inventor： Nakagawa, Shiro ,  Tsuchida, Atsuko ,  Takahashi, Eiji

IPC: H03M1/20

CPC classification number: H03M1/201

Abstract: An A/D converter system has an A/D converter element (10) which provides a first predetermined number of digital output bits for each input analog signal, an addition means (12,70) for adding linear slope potential to said input analog signal, and a calculator (14) for providing an average of a plurality of digital output signals of said A/D converter element so that said average has larger number of bits than said first predetermined number. Said addition means is implemented by a time constant circuit (70) which functions as an integral circuit for an input analog signal, and functions as a differential circuit for a slope potential.

Abstract translation: A / D转换器系统具有A / D转换器元件（10），其为每个输入模拟信号提供第一预定数量的数字输出位;加法装置（12,70），用于将线性斜率电位加到所述输入模拟信号 以及用于提供所述A / D转换器元件的多个数字输出信号的平均值的计算器（14），使得所述平均值具有比所述第一预定数量更大的比特数。 所述加法装置由用作输入模拟信号的积分电路的时间常数电路（70）实现，并且用作斜坡电位的差分电路。

公开(公告)号：EP0184398B1

公开(公告)日：1991-09-18

申请号：EP85308700.5

申请日：1985-11-29

Applicant: RCA LICENSING CORPORATION

Inventor： Willis, Donald Henry

IPC: H03M1/20 ,  H04N9/455

CPC classification number: H03M1/201 ,  H03M1/365 ,  H04N19/90

公开(公告)号：EP0184398A3

公开(公告)日：1988-06-22

申请号：EP85308700

申请日：1985-11-29

Applicant: RCA LICENSING CORPORATION

Inventor： Willis, Donald Henry

IPC: H03M01/20 ,  H04N09/455

CPC classification number: H03M1/201 ,  H03M1/365 ,  H04N19/90

Abstract: a A narrow bandwidth analog-to-digital conversion (ADC) system is described in the context of the color burst processing and burst phase detecting circuitry of a digital color television receiver. The ADC (14) includes a dither generator which adds a dither signal to either the analog input signal (10) or to the reference signal (38) used by the ADC. This dither signal increases in magnitude by 1/16 of an LSB value at a rate one-quarter of the burst frequency and changes in sign at one-half of the burst frequency. This signal passes through a low-pass filter (18) in the chrominance channel providing an increase in sample resolution by averaging the samples in a chroma band-pass filter and in the phase detecting circuitry (30).

Abstract translation: 在数字彩色电视接收机的彩色突发处理和突发相位检测电路的上下文中描述了窄带宽模数转换（ADC）系统。 ADC（14）包括抖动发生器，抖动发生器将抖动信号添加到模拟输入信号（10）或由ADC使用的参考信号（38）。 该抖动信号的幅度以1/4脉冲频率的1/16的幅度增加，速率是脉冲频率的四分之一，并且在脉冲频率的一半处以符号改变。 该信号通过色度通道中的低通滤波器（18），通过对色度带通滤波器和相位检测电路（30）中的采样进行平均来提高采样分辨率。