公开(公告)号：US6115726A

公开(公告)日：2000-09-05

申请号：US144360

申请日：1998-08-31

Applicant: Aleksandar Ignjatovic

Inventor： Aleksandar Ignjatovic

IPC: G06F17/10 ,  H03F3/217 ,  H03H17/00 ,  H03H17/02 ,  H03H17/06 ,  H03H21/00 ,  H03M1/06 ,  H03M1/08 ,  H03M1/20 ,  H03M1/66

CPC classification number: H03M1/661 ,  G06F17/10 ,  H03F3/217 ,  H03H17/06 ,  H03M1/208

Abstract: A new signal processing method and a signal processing engine which can achieve extremely fast responsiveness to instantaneous changes in the behavior of the signal, and maintain the accuracy of standard harmonic methods. The signal processing engine unifies Nyquist's theorem and Taylor's theorem by means of polynomial approximations using linear operators, e.g. differential and integral operators. The signal processing engine samples the signal at a rate which is n times the band limit of the signal, where n is greater than 2, i.e. greater than the Nyquist rate, produces a digital representation of the sampled signal, and calculates the outputs of linear operators applied to polynomial approximations of the sampled signal. A switch mode power amplifier which incorporates the signal processing method and engine of the overcomes shortcomings of existing switching amplifiers, e.g. class "D" amplifiers. These shortcomings include: poor handling of highly reactive complex loads (e.g., speakers), usually requiring a duty cycle or feed-back adjustment with the change of the load; poor performance in the upper part of the bandwidth, including numerous switching artifacts; and high distortion, especially in the upper part of the spectrum. These shortcomings are all overcome using the local signal behavior signal processing method and engine of the invention.

Abstract translation: 一种新的信号处理方法和信号处理引擎，可以实现对信号行为的瞬时变化的极快响应，并保持标准谐波方法的准确性。 信号处理引擎通过使用线性算子的多项式近似来统一奈奎斯特定理和泰勒定理，例如， 差分和积分算子。 信号处理引擎以n倍于信号的频带限制的速率对信号进行采样，其中n大于2，即大于奈奎斯特速率，产生采样信号的数字表示，并计算线性的输出 运算符应用于采样信号的多项式近似。 一种开关模式功率放大器，其结合了克服现有开关放大器的缺点的信号处理方法和引擎，例如， 类“D”放大器。 这些缺点包括：对高反应性复合负载（例如扬声器）的处理差，通常需要负载周期或负载的改变进行反馈调整; 在带宽的上部表现不佳，包括大量的切换伪影; 并且具有高失真，特别是在光谱的上部。 这些缺点都使用本发明的本地信号行为信号处理方法和引擎来克服。

公开(公告)号：US06727837B2

公开(公告)日：2004-04-27

申请号：US09905322

申请日：2001-07-13

Applicant: Aleksandar Ignjatovic ,  Nicholas A. Carlin

Inventor： Aleksandar Ignjatovic ,  Nicholas A. Carlin

IPC: H03M112

CPC classification number: H03M1/207

Abstract: A method and a system for acquiring local signal behavior parameters (LSBPs) of a band-limited (BL) signa, for representing and processing the signal, wherein the LSBPs encode the signal's local behavior in between Nyquist rate points. Preferably, a section of a BL signal within a sampling window is represented as a truncated series of order n at a sampling moment within the sampling window. The truncated series having n+1 LSBPs as its coefficients, encoding the signal's local behavior between Nyquist rate points. Compared to the conventional approach that encodes a signal's behavior by signal samples taken at Nyquist rate points, the invention encodes more signal behavior. Discrete signal samples are obtained from the signal. The LSBPs are solved numerically such that the interpolated values of the truncated series provide the least-square fit with the discrete signal samples. The LSBPs are repectively the values of chromatic differential operators of order 0 to order n evaluated at the sampling moment.

Abstract translation: 一种用于获取带限制（BL）信号的本地信号行为参数（LSBP）的方法和系统，用于表示和处理信号，其中LSBP对奈奎斯特速率点之间的信号的局部行为进行编码。 优选地，采样窗口内的BL信号的一部分在采样窗口内的采样时刻被表示为阶数为n的截断系列。 截距序列具有n + 1个LSBP作为其系数，对奈奎斯特速率点之间的信号的局部行为进行编码。 与通过在奈奎斯特速率点拍摄的信号样本对信号行为进行编码的常规方法相比，本发明编码更多的信号行为。 从信号获得离散信号样本。 LSBP被数值求解，使得截断序列的插值提供与离散信号样本的最小二乘拟合。 LSBP分别是在采样时刻评估的阶数为0到阶n的色差算子的值。

公开(公告)号：US06313778B1

公开(公告)日：2001-11-06

申请号：US09614886

申请日：2000-07-09

Applicant: Aleksandar Ignjatovic ,  Nicholas A. Carlin

Inventor： Aleksandar Ignjatovic ,  Nicholas A. Carlin

IPC: H03M112

CPC classification number: H03M1/207

Abstract: A method and a system for acquiring signal behavior parameters (LSBPs) of a band-limited (BL) signa, for representing and processing the signal, wherein the LSBPs encode the signal's local behavior in between Nyquist rate points. Preferably, a section of a BL signal within a sampling window is represented as a truncated series of order n at a sampling moment within the sampling window. The truncated series having n+1 LSBPs as its coefficients, encoding the signal's local behavior between Nyquist rate points. Compared to the conventional approach that encodes a signal's behavior by signal samples taken at Nyquist rate points, the invention encodes more signal behavior. Discrete signal samples are obtained from the signal. The LSBPs are solved numerically such that the interpolated values of the truncated series provide the least-square fit with the discrete signal samples. The LSBPs are repectively the values of chromatic differential operators of order 0 to order n evaluated at the sampling moment.

Abstract translation: 一种用于获取频带限制（BL）信号的信号行为参数（LSBP）的方法和系统，用于表示和处理信号，其中LSBP对奈奎斯特速率点之间的信号的局部行为进行编码。 优选地，采样窗口内的BL信号的一部分在采样窗口内的采样时刻被表示为阶数为n的截断系列。 截距序列具有n + 1个LSBP作为其系数，对奈奎斯特速率点之间的信号的局部行为进行编码。 与通过在奈奎斯特速率点拍摄的信号样本对信号行为进行编码的常规方法相比，本发明编码更多的信号行为。 从信号获得离散信号样本。 LSBP被数值求解，使得截断序列的插值提供与离散信号样本的最小二乘拟合。 LSBP分别是在采样时刻评估的阶数为0到阶n的色差算子的值。