Patent ID: 6629278
Filing Date: 2003-09-30
Classification: G01R,H03M

Abstract:
A compressed data restoration apparatus designed to restore a plurality of compressed data rows obtained by a compression process for a plurality of source data rows, to generate a plurality of restored data rows, said compressed data restoration apparatus comprising:a first storage unit for storing therein a main file composed of a plurality of unit files each including a compressed data row and control data required for restoration thereof, each unit file being provided for each compressed data row, said main file containing dummy data in place of dynamic control data to be acquired after generation of the compressed data rows; a second storage unit for storing therein a sub-file containing the dynamic control data acquired from the control data for the compressed data rows after generation of the compressed data rows; a substituted control data generation unit which, upon generation of the restored data rows by restoration of said compressed data rows, reads out said unit files from said first storage unit and said dynamic control data from said second storage unit so as to substitute said dummy data of said control data with said dynamic control data in said sub-file for each of said unit files to thereby generate substituted control data; and a restoration processor which accepts said compressed data row and said substituted control data from said control data generation unit for each of said unit files so as to restore said compressed data rows with use of said substituted control data to thereby generate restored data rows.