| 摘要 |
PROBLEM TO BE SOLVED: To obtain a method and a device for expanding compressed data which reduce a storage area required for expansion and shorten the time required for expansion. SOLUTION: A data rearrangement means 24, which rearranges plural compressed data stored in a data area R2 so that they may be continuous and generates a continuous idle area, and a data expansion means 26 which successively expands compressed data in the idle area R2 and successively deletes compression data of which the expansion is completed are provided. Compressed data of which the expansion is completed is deleted to extend an idle area, and an unnecessary area for expansion is not independently assigned to perform expansion within the data area, and therefore, the storage area required for expansion is reduced. |
