FILE-SYNCHRONIZING SYSTEM, FILE SYNCHRONIZATION METHOD, AND FILE SYNCHRONIZATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To improve the efficiency of file synchronization.;SOLUTION: A transfer device 10 includes an actual data splitting unit 11 for splitting data in a file 141 to be transferred into a plurality of blocks; a hash-value creation unit 12 for creating a hash value out of the data for each block; and a transmission unit 13 for transmitting the hash value to the transfer device 20. The transfer device 20 includes an actual data splitting unit 21 for splitting the data in the file 241 into a block of the same size as the blocks split by the actual data splitting unit 11; a hash value creation unit 22 for creating a hash value out of the data for each block; and a transmission unit 23 for comparing for each block number the hash values generated by the hash value creation units 12, 22, and transmitting the block numbers of the unmatched hash values to the transfer device 10. The transmission unit 13 transmits the actual data corresponding to the block number received from the transfer device 20 to the transfer device 20.;COPYRIGHT: (C)2011,JPO&INPIT