| 摘要 |
PROBLEM TO BE SOLVED: To improve access speed of digital media data. SOLUTION: A file system is provided per type of data included in the digital media data, and the divided digital media data is stored in a storage region using the corresponding file system. Consequently, a header part only can be updated in a section where updating is frequently performed such as the header part included in the digital media data. As a result, an access speed of the digital media data can be improved.
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