INFORMATION RECORDING MEDIUM, DATA PROCESSOR AND DATA PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an information recording medium effective for defragmentation of data, for example, a data processor and a data processing method that achieve data processing at high speed and prevention of shortening of the life of memory. SOLUTION: The recording medium (100) comprises a logical-physical conversion table (140) for storing correspondence between a logical address and a physical address of each block of a memory area (130). The recording medium (100) further has a function of replacing the correspondence between the logical address and the physical address in the logical-physical conversion table (140) for a group of logical addresses upon receipt of a predetermined replacement command. The data processor (200) issues a replacement command to the recording medium (100) so that data are located at contiguous areas in a logical address space, thereby executing defragmentation on the logical address space. COPYRIGHT: (C)2005,JPO&NCIPI