| 摘要 |
PURPOSE:To enable the content of a file to be restored to the content before update anytime when file transfer is completed in the middle way or a user designates an incorrect reception file, etc., by automatically saving the content of a reception file before update before starting the file transfer. CONSTITUTION:When the file transfer is requested by the user or an opposite computer, a file transfer request judging means 3 receives the request and judges the content, and informs a reception file saving request to a reception file saving means 4, also, informs a file transfer execution request to a file transfer execution means 5. The reception file saving means 4 saves the content before update in a saving file 8, and informs an execution result. The file transfer execution means 5 executes the file transfer, and informs abnormal completion such as the incompletion of execution, etc., when it occurs to a reception file restoration requesting file restoring means 6. In such a way, it is possible to improve operation and operability for a case when the file transfer is completed abnormally by automatically performing the saving and the restoration of the content of the reception file.
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