| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressed data structure which can be processed at a high speed and has a higher compression rate. SOLUTION: When direct data 22 and the other part of the inputted data are coincident with each other or a prepared fixed dictionary and data are coincident with each other, indirect data 23 composed of a position data and a length data, which are replaced so as to show the coincident position and length have a preset bit length in the compressed data structure. The indirect data 23 are provided with coincident depth data 24 in which a ratio between the position data and the length data is variable and which show a ratio between the position data and the length data in the bit length of the indirect data 23. COPYRIGHT: (C)2006,JPO&NCIPI |
