| 摘要 |
PROBLEM TO BE SOLVED: To provide a data storage method allowing random access in block units of compression data, and allowing reduction of an error while suppressing a compression rate. SOLUTION: In the data storage method, compression block data wherein block data are compressed are obtained, and it is decided whether or not a compression block size of the compression block data exceeds an expectation compression block size. As the result of the decision, when it is decided that it does not exceed the expectation compression block size, flag information indicating that it does not exceed the expectation compression block size, and the compression block data are stored in a compression block. When it is decided that it exceeds the expectation compression block size, flag information indicating that it exceeds the expectation compression block size, pointer information for designating a place of the compression block for storing the compression block data exceeding the expectation compression block size, and the compression block data are stored in the compression block. COPYRIGHT: (C)2011,JPO&INPIT
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