Patent ID: 6411227
Filing Date: 2002-06-25
Classification: H03M

Abstract:
A method of compressing a data input file to create a compressed data output file, the method comprising steps of:a) sequentially examining the data input file using a sliding window compression scheme to create root items and copy items, the copy items each having a length value and an offset value, the offset values each having a most significant portion and a least significant portion; b) creating an abridged root/copy file, the abridged root/copy file comprising the root items and the. least significant portions of the offset values of the copy items; c) compressing the most significant portions of the offset values of the copy items to create a compressed offset file; d) compressing the length values of the copy items to create a compressed length file; and e) combining the abridged root/copy file, the compressed offset file, and the compressed length file to create the compressed data output file.