| 摘要 |
PROBLEM TO BE SOLVED: To provide a data compression and/or decompression technology by which character compression is improved. SOLUTION: A data decompression apparatus is configured so as to act on compressed data which includes an ordered stream of references to groups of previously decoded data items, an ordered stream of direct representations of data items to be decoded, and an ordered stream of flags indicating whether each successive decompression operation should act on the reference or on the direct representation. The apparatus includes an output memory area, a detector to detect n pieces of consecutive flags indicating that a decompression operation should act on the direct representation, and a data copying machine for copying to the output memory area either a next referenced group of previously decoded data or the group of n pieces of consecutive direct representations from the ordered stream of the direct representations. COPYRIGHT: (C)2010,JPO&INPIT |
