| 摘要 |
PROBLEM TO BE SOLVED: To temporarily preserve various digital data contents of a customer to accurately charge for these contents in accordance with the actual preservation size and the preservation time. SOLUTION: A service provider side 2 takes in digital data contents, which a customer side 1 possesses, through a network 6 in response to a request from the customer side. Taken-in digital contents ate temporarily preserved by a large-scale storage 21. When the customer requests digital data contents thereafter, temporarily preserved digital data contents are delivered to the customer through the network 6. The charge for preservation is charged in consideration of the total information volume of digital data contents stored in the large-scale storage 21 and the time for which digital data contents have been stored. |
