Patent ID: 7126968
Filing Date: 2006-10-24
Classification: H03M

Abstract:
1. A data compression system for compressing original time series data with a various waveform, comprising: a compression unit configured to generate a compression code by compressing the original time series data without damaging characteristics of waveform information in the various waveform, the waveform information including a signal with a various change including one of a step-like signal change and a local signal average value; a transmitting unit configured to transmit the compression code through a network; and a decompression unit being intercommunicated through the network with the transmitting unit; wherein said compression unit is configured to perform a wavelet transform to the original time series data by using a mother wavelet function to decompose the original time series data into a predetermined level number of component waveforms, each of the waveforms of each level having local peak value data, to extract at least one of the local peak value data of each of the component waveforms, to refer to a mother wavelet code transform table by using a mother wavelet function code corresponding to the mother wavelet function to extract a transform code, wherein the compression code includes the extracted local peak value data, one of the component waveforms having a low frequency of a final level, the transform code, and a number of decomposition levels, and the extracted local peak value data includes a peak value which is not less than a predetermined threshold value thereof and a position in a data-frame of each level thereof; said decompression unit comprising: