公开(公告)号：US09219493B1

公开(公告)日：2015-12-22

申请号：US14550525

申请日：2014-11-21

申请人： FREESCALE SEMICONDUCTOR, INC.

发明人： George R. Kunnen ,  Mark A. Lancaster

IPC分类号： H03M1/10 ,  H03M3/00

CPC分类号： H03M3/388 ,  H03M3/332 ,  H03M3/35 ,  H03M3/468 ,  H03M3/496

摘要： A system includes an analog-to-digital converter (ADC) for converting an analog input signal to a digital signal output and a nonlinearity corrector for correcting nonlinear error in the digital signal output to produce a corrected digital signal output. A source of the nonlinear error is associated with the ADC, wherein an analog calibration signal is introduced to the source of the nonlinear error during conversion of the analog calibration signal to a digital calibration output having the nonlinear error. After conversion of the analog calibration signal to the digital calibration output, a calibration circuit calculates expected values of correlation sums in response to the digital calibration output and determines correction coefficients using the expected values of the correlation sums. The calibration circuit provides correction data based upon the correction coefficients to the nonlinearity corrector.

摘要翻译： 一种系统包括用于将模拟输入信号转换为数字信号输出的模拟 - 数字转换器（ADC）和用于校正数字信号输出中的非线性误差的非线性校正器，以产生经校正的数字信号输出。 非线性误差的源与ADC相关联，其中在将模拟校准信号转换为具有非线性误差的数字校准输出期间，将模拟校准信号引入非线性误差源。 在将模拟校准信号转换为数字校准输出之后，校准电路响应于数字校准输出来计算相关和的预期值，并使用相关和的期望值来确定校正系数。 校准电路基于对非线性校正器的校正系数提供校正数据。

公开(公告)号：US09209829B2

公开(公告)日：2015-12-08

申请号：US14567496

申请日：2014-12-11

申请人： Syntropy Systems, LLC

发明人： Christopher Pagnanelli

IPC分类号： H03M3/00

CPC分类号： H03M3/468 ,  H03M3/422 ,  H03M3/436

摘要： Provided are, among other things, systems, apparatuses, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. One such apparatus includes an input line for accepting an input signal that is continuous in time and continuously variable, multiple processing branches coupled to the input line, and an adder coupled to outputs of the processing branches. Each of the processing branches includes a continuous-time quantization-noise-shaping circuit, a sampling/quantization circuit coupled to an output of the continuous-time quantization-noise-shaping circuit, a digital bandpass filter coupled to an output of the sampling/quantization circuit, and a line coupling an output of the digital-to-analog converter circuit back into the continuous-time quantization-noise-shaping circuit. A center frequency of the digital bandpass filter in each the processing branch corresponds to a minimum in a quantization noise transfer function for the continuous-time quantization-noise-shaping circuit in the same processing branch.

摘要翻译： 尤其提供了用于将连续时间连续可变信号转换成采样和量化信号的系统，装置，方法和技术。 一种这样的装置包括用于接受在时间上连续且连续可变的输入信号的输入线，耦合到输入线的多个处理分支以及耦合到处理分支的输出的加法器。 每个处理分支包括连续时间量化噪声整形电路，耦合到连续时间量化噪声整形电路的输出的采样/量化电路，耦合到采样/量化噪声整形电路的输出的数字带通滤波器， 量化电路和将数模转换器电路的输出耦合回连续时间量化噪声整形电路的线路。 每个处理分支中的数字带通滤波器的中心频率对应于相同处理分支中连续时间量化噪声整形电路的量化噪声传递函数中的最小值。

公开(公告)号：US20150171890A1

公开(公告)日：2015-06-18

申请号：US14629442

申请日：2015-02-23

申请人： Syntropy Systems, LLC

发明人： Christopher Pagnanelli

IPC分类号： H03M3/00 ,  H03M1/08 ,  H03M1/12

CPC分类号： H03M3/468 ,  H03M1/0836 ,  H03M1/121

摘要： Provided is an apparatus for converting a continuous-time, continuously variable signal into a sampled and quantized signal, which includes an input line for accepting an input signal, multiple processing branches coupled to the input line, and an adder coupled to outputs of the plurality of processing branches. Each of the processing branches includes a sampling/quantization circuit and a digital bandpass interpolation filter having an input coupled to an output of the sampling/quantization circuit. The digital bandpass interpolation filters in different ones of the processing branches have frequency responses that are centered at different frequencies. The digital bandpass interpolation filter in at least one of the processing branches includes: (i) a quadrature downconverter, (ii) a first lowpass filter and a second lowpass filter, (iii) a first interpolator and a second interpolator, each having an input for inputting a variable interpolant value, and (iv) a quadrature upconverter.

摘要翻译： 提供了一种用于将连续时间连续可变信号转换为采样和量化信号的装置，其包括用于接受输入信号的输入线，耦合到输入线的多个处理分支和耦合到多个输出的输出的加法器 的处理分支机构。 每个处理分支包括具有耦合到采样/量化电路的输出的输入的采样/量化电路和数字带通内插滤波器。 不同处理分支中的数字带通插值滤波器具有以不同频率为中心的频率响应。 至少一个处理分支中的数字带通插值滤波器包括：（i）正交下变频器，（ii）第一低通滤波器和第二低通滤波器，（iii）第一内插器和第二内插器，每个具有输入 用于输入可变内插值，和（iv）正交上变频器。

公开(公告)号：US20140177887A1

公开(公告)日：2014-06-26

申请号：US14131760

申请日：2011-07-14

申请人： Hans-Ueli Roeck

发明人： Hans-Ueli Roeck

IPC分类号： H04R25/00

CPC分类号： H04R25/353 ,  H03M3/468 ,  H03M3/472 ,  H04R25/00 ,  H04R25/505 ,  H04R2225/43 ,  H04R2460/03

摘要： The present invention is directed to a method and a hearing device for extending a usable frequency range of an analog input signal (i) being processed by a hearing device, the method comprising the steps of converting the analog input signal (i) to a first output signal (o1) and to an intermediate signal (om), the first output signal (o1) having a final sampling rate and the intermediate signal (om) having an intermediate sampling rate that is greater than the final sampling rate, applying a band-pass filter unit (31) to the intermediate signal (om) in order to obtain a filtered intermediate signal (omf), a lower cut-off frequency of the band-pass filter unit (31) being above half the final sampling rate, an upper cut-off frequency of the band-pass filter unit (31) being below half the intermediate sampling rate, and shifting a spectrum of the filtered intermediate signal (omf) to a frequency range being below the final sampling rate to obtain an intermediate output signal (om2).

摘要翻译： 本发明涉及一种用于扩展由听力装置处理的模拟输入信号（i）的可用频率范围的方法和听力装置，所述方法包括以下步骤：将模拟输入信号（i）转换成第一 输出信号（o1）和中间信号（om），所述第一输出信号（o1）具有最终采样率，并且所述中间信号（om）具有大于所述最终采样速率的中间采样率， 通过滤波器单元（31）到中间信号（om）以获得滤波的中间信号（omf），带通滤波器单元（31）的下限截止频率高于最终采样率的一半， 带通滤波器单元（31）的上限截止频率低于中间采样率的一半，并且将滤波的中间信号（omf）的频谱移动到低于最终采样率的频率范围，以获得中间采样率 输出信号（om2）。

公开(公告)号：US08416111B2

公开(公告)日：2013-04-09

申请号：US12985214

申请日：2011-01-05

申请人： Christopher Pagnanelli

发明人： Christopher Pagnanelli

IPC分类号： H03M3/00

CPC分类号： H03M3/468 ,  H03M3/38 ,  H03M3/414 ,  H03M3/436

摘要： Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one implementation, an apparatus includes multiple processing branches, each including: a continuous-time quantization-noise-shaping circuit, a sampling/quantization circuit, and a digital bandpass filter. A combining circuit then combines signals at the processing branch outputs into a final output signal. The continuous-time quantization-noise-shaping circuits include adjustable circuit components for changing their quantization-noise frequency-response minimum, and the digital bandpass filters include adjustable parameters for changing their frequency passbands.

摘要翻译： 尤其提供了用于将连续时间连续可变信号转换为采样和量化信号的系统，方法和技术。 根据一个实现，一种装置包括多个处理分支，每个分支包括：连续时间量化噪声整形电路，采样/量化电路和数字带通滤波器。 然后，组合电路将处理分支输出处的信号组合成最终的输出信号。 连续时间量化噪声整形电路包括用于改变其量化噪声频率响应最小值的可调节电路部件，并且数字带通滤波器包括用于改变其频率通带的可调参数。

公开(公告)号：US20110095927A1

公开(公告)日：2011-04-28

申请号：US12985238

申请日：2011-01-05

申请人： Christopher Pagnanelli

发明人： Christopher Pagnanelli

IPC分类号： H03M1/50

CPC分类号： H03M3/468 ,  H03M3/414 ,  H03M3/422 ,  H03M3/436

摘要： Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one representative embodiment, an apparatus includes multiple continuous-time quantization-noise-shaping circuits, each in a separate processing branch and having an adder that includes multiple inputs and an output; an input signal is coupled to one of the inputs of the adder; the output of the adder is coupled to one of the inputs of the adder through a first filter; and the output of a sampling/quantization circuit in the same processing branch is coupled to one of the inputs of the adder through a second filter, with the second filter having a different transfer function than the first filter.

摘要翻译： 尤其提供了用于将连续时间连续可变信号转换为采样和量化信号的系统，方法和技术。 根据一个代表性实施例，一种装置包括多个连续时间量化噪声整形电路，每个电路分开处理分支并具有包括多个输入和输出的加法器; 输入信号耦合到加法器的一个输入端; 加法器的输出通过第一滤波器耦合到加法器的一个输入端; 并且相同处理支路中的采样/量化电路的输出通过第二滤波器耦合到加法器的一个输入端，第二滤波器具有与第一滤波器不同的传递函数。

公开(公告)号：US20080100482A1

公开(公告)日：2008-05-01

申请号：US11965337

申请日：2007-12-27

申请人： Aurel Lazar

发明人： Aurel Lazar

IPC分类号： H03M1/02

CPC分类号： H03M1/121 ,  H03M1/125 ,  H03M1/50 ,  H03M1/662 ,  H03M1/82 ,  H03M3/432 ,  H03M3/468 ,  H03M3/504

摘要： Analog signals can be fully encoded as an asynchronous time sequence generated by a time encoding machine. With knowledge of the parameters of the time encoding machine, the asynchronous time sequence can be decoded using a non-linear time decoding machine. Such a system can be extended into an encoder/decoder in which a signal is processed in M separate channels. An input signal is applied to the encoder where the signal is provided to an M channel encoder circuit including a filter bank having a total bandwidth partitioned among M adjacent or overlapping filters. Each of the M filters are coupled to a corresponding one of M time encoding machines. The encoder output is represented by M sets of time encoded trigger values. The input signal can be recovered from the M sets of time encoded trigger values by applying the trigger signals to a corresponding M channel decoder which includes M TDMs and filters. The TDMs recover the continuous signal from each channel. The filter outputs xm are then amplitude scaled sm and are combined to recover the input signal. By partitioning the signal bandwidth into M channels, the average pulse rate from each TDM is substantially reduced.

摘要翻译： 模拟信号可以被完全编码为由时间编码机产生的异步时间序列。 利用时间编码机的参数知识，可以使用非线性时间解码机对异步时序进行解码。 这样的系统可以扩展到编码器/解码器，其中在M个独立的信道中处理信号。 输入信号被施加到编码器，其中信号被提供给M通道编码器电路，该M通道编码器电路包括具有在M个相邻或重叠滤波器之间划分的总带宽的滤波器组。 M个滤波器中的每一个耦合到M个时间编码机中相应的一个。 编码器输出由M组时间编码的触发值表示。 可以通过将触发信号施加到包括M个TDM和滤波器的相应M信道解码器，从M组的时间编码触发值中恢复输入信号。 TDM从每个通道恢复连续信号。 滤波器输出xm然后是幅度缩放的sm并被组合以恢复输入信号。 通过将信号带宽划分为M个信道，来自每个TDM的平均脉冲速率显着降低。

公开(公告)号：US06701297B2

公开(公告)日：2004-03-02

申请号：US09796493

申请日：2001-03-02

申请人： Geoffrey Layton Main

发明人： Geoffrey Layton Main

IPC分类号： G10L1900

CPC分类号： H03M3/41 ,  H03M3/468 ,  H03M3/50

摘要： A direct intermediate frequency sampling analog-to-digital and digital-to-analog converter comprised of (1) a bank of precision analog wavelet generator circuits, (2) synchronization circuits and calibration circuits, and (3) digital measurement circuits. In combination these circuits provide high dynamic range and high sample rate direct intermediate frequency sampling conversion between the discrete-time and continuous-time domains.

摘要翻译： 一种直接中频采样模数和数模转换器，包括（1）一组精密模拟小波发生器电路，（2）同步电路和校准电路，以及（3）数字测量电路。 结合这些电路在离散时间域和连续时域之间提供高动态范围和高采样率直接中频采样转换。

公开(公告)号：US20030132870A1

公开(公告)日：2003-07-17

申请号：US10106990

申请日：2002-03-25

发明人： Kameran Azadet

IPC分类号： H03M001/12 ,  H03M003/00

CPC分类号： H03M3/50 ,  H03M1/12 ,  H03M1/121 ,  H03M1/662 ,  H03M3/468

摘要： A method and apparatus are disclosed for converting a signal between the analog and digital domains using frequency interleaving. The disclosed frequency interleaving techniques can be similarly applied to convert analog signals to the digital domain or vice-versa. An analog-to-digital converter decomposes the input broadband signal into N frequency bands that are separately sampled (quantized) before a Fourier transform is applied to convert the signal into the digital domain. Each of the frequency bands can be sampled in the corresponding narrow passband using narrow-band converters, such as passband Sigma-Delta converters, or can be returned to baseband prior to sampling. The various analog samples are then converted to the digital domain using an inverse Fourier transform, or another combining technique. Both sampling and analog-to-digital conversion can be performed at a speed that is N times slower than the input frequency. The disclosed frequency interleaving technique decomposes the input signal into frequency bands that are digitized separately at a slower rate. A disclosed calibration scheme corrects for phase and gain mismatches.

摘要翻译： 公开了一种用于使用频率交织来在模拟和数字域之间转换信号的方法和装置。 公开的频率交织技术可以类似地应用于将模拟信号转换成数字域，反之亦然。 模数转换器将输入宽带信号分解为在应用傅里叶变换以将信号转换成数字域之前被单独采样（量化）的N个频带。 可以使用诸如通带Σ-Δ转换器之类的窄带转换器在相应的窄通带中对每个频带进行采样，或者可以在采样之前返回到基带。 然后，使用傅立叶逆变换或其他组合技术将各种模拟样本转换为数字域。 采样和模数转换都可以以比输入频率慢N倍的速度进行。 所公开的频率交织技术将输入信号分解成以较慢速率单独数字化的频带。 公开的校准方案校正相位和增益失配。

公开(公告)号：US06525682B2

公开(公告)日：2003-02-25

申请号：US09848499

申请日：2001-05-03

申请人： Daniel Yap ,  Robert H. Walden

发明人： Daniel Yap ,  Robert H. Walden

IPC分类号： H03M112

CPC分类号： H03M3/468 ,  G02F7/00

摘要： A photonically sampled analog-to-digital converter using parallel channels of sampling and quantizing. The parallel combination achieves cancellation of the spurs that result from the nonlinear transfer function of the samplers. The samplers feed a dual-detector optoelectronic receiver that has differential inputs for suppression of laser intensity noise. The outputs of the multiple photonic samplers are averaged to reduce the effects of shot or thermal noise from the optoelectronic receiver of a sampler. The errors produced by the quantization process can be reduced by using a delta-sigma modulator-based analog-to-digital convertor as the quantizer which provides noise-spectrum shaping and filtering.

摘要翻译： 采用并行通道采样和量化的光子采样模数转换器。 并行组合实现了取样器的非线性传递函数所产生的杂散的消除。 采样器馈送双检测器光电接收器，其具有用于抑制激光强度噪声的差分输入。 对多个光子采样器的输出进行平均，以减少来自采样器的光电接收器的射击或热噪声的影响。 可以通过使用基于Δ-Σ调制器的模数转换器作为提供噪声谱整形和滤波的量化器来减少量化处理产生的误差。