| 摘要 |
PROBLEM TO BE SOLVED: To apply a file system of a write once type to a storage device. SOLUTION: The memory unit includes first and second logical areas 41, 42 being logically formatted by different standards, and a memory area 40 constituted of a nonvolatile semiconductor memory. The first logical area 41 includes a first program storage area 41B storing a first program for accessing the second logical area 42. COPYRIGHT: (C)2008,JPO&INPIT
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