| 摘要 |
For improving operability by reducing time for backup of video/audio files through a network, and also for achieving to shorten processing time, as well as, to lower a capacity of a recording medium, by inhibiting unnecessary backup, a file transmission system comprises a file list obtaining means for obtaining a list of files, which are stored in a server, a file transmission controller means for controlling file transmission, a file transmission requesting means for requesting a file transmission to the server, a file receiver means for receiving the file transmitted form the server, and a client file storage means for storing the files therein, wherein control is made on the file transmission requesting means, so that it request a transmission of file(s), excepting the file(s), which is/are stored in the client file storage mean, to the server, upon basis of the list.
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