| 摘要 |
A file retrieval device, operable to retrieve a valid file name for reading a plurality of file main bodies from a recording medium in which the plurality of file main bodies and file related information that includes a file names respectively allocated to the plurality of file main bodies and respectively depending on different file systems are recorded and which is coordinated with one file system in advance, the file retrieval device, including: a first extracting unit, operable to extract the file name depending on the file system identical with the one file system from the file related information; a validity deciding unit, operable to decide validity of the file name depending on the file system other than the one file system; a second extracting unit, operable to extract the file name depending on the file system related to the file name decided to be valid by the validity deciding unit for the file main body the file name of which is not extracted by the first extracting unit; and an output unit, operable to output the file names extracted by the first and second extracting units.
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