公开(公告)号：US20020190886A1

公开(公告)日：2002-12-19

申请号：US09905322

申请日：2001-07-13

Applicant: Kromos Technology, Inc.

Inventor： Aleksandar Ignjatovic ,  Nicholas A. Carlin

IPC: H03M001/12

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 nnull1 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。