| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need for backup management by completing backup operation only by letting a user send a contents list and a user ID to a contents supplier. SOLUTION: A list of pieces of downloaded music is generated by a contents list generator 103 and the contents list and the user ID are sent to a backup controller 102. The contents supplier stores the pieces of music corresponding to the contents list in a contents server. When music is restored by using backup contents, they are downloaded from the contents server 101. |
