Patent ID: 6091857
Filing Date: 2000-07-18
Classification: G06F,G06T,H04L,H04M,H04N

Abstract:
A system for producing a quantized scalable signal during a particular period of time comprising:input means for receiving a time or frequency domain signal X and for sampling and/or partitioning said signal X to an n-dimensional array of subsignals, said signal X decomposable to a two dimensional array of subsignals X.sub.ij ;digitization/quantization means connected to said input means for calculating each of said X.sub.ij subsignals as the polynomial expression X.sub.ij =a.sub.n x.sup.n +a.sub.n-1 x.sup.n-1 +a.sub.n-2 x.sup.n-2 . . . +a.sub.1 x.sup.1 +a.sub.0 ;means for assessing various characteristics of each of said subsignals X.sub.ij allowing each of said subsignals X.sub.ij to be assigned a priority value and a quantization value;decision means for determining the compression requirements for said subsignals X.sub.ij are for computing the overall bit contents for the entire signal X according to said compression requirements;means for transmitting, storing and/or retrieving each of said subsignals X.sub.ij for the signal X in its compressed form based upon said quantization value; andreconstruction means for restoring the input signal X based upon an approximation of each of said subsignals X.sub.ij to restore said polynomial expressions of each of said subsignals X.sub.ij.