File-level synchronization method based on mobile storage devices
A mobile storage device and file-level technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as data loss, poor convenience of use, and impact on data security, so as to improve work efficiency, The effect of ensuring safety
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[0027] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0028] The method of the present invention is characterized in that:
[0029] Assume that the user folder F to be synchronized on the source computer device contains m files, which are represented as f 1 , f 2 ,...,f m , and the hash values corresponding to each file are denoted as h 1 、h 2 ,...,h m ;Set removable storage device c, synchronized folder F * All files included in
[0030] When the user inserts or ejects the removable storage device c on the computer device, for The synchronization program is file f in folder F in the computer i Generate a hash value h i , and with the file f stored in c i Compare the hash values of each historical version, if the same hash value is not found, it means that the file f on the computer device i is the latest version, with file f i Replace the old version file on c Simultaneous hash value h i Save i...
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