| 摘要 |
PROBLEM TO BE SOLVED: To compress/expand data at good compressibility by a data processor performing data processing. SOLUTION: This data processor is provided with a data processing means 11 having a function for data compression processing, a compressed data storage means 13 storing compressed data, a transfer performance information storage means storing information about data transfer performance between the data processing means and the compressed data storage means, and a processing performance information storage means storing information about processing performance of the data processing means. Based on the information about the transfer performance and the information about the processing performance, a compressibility decision means decides compressibility, and the data processing means carries out data compression processing at the decided compressibility. COPYRIGHT: (C)2006,JPO&NCIPI
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