| 摘要 |
PROBLEM TO BE SOLVED: To reduce a charge burden even when a user uses contents immediately and even when the expected value of the contents decreases and to make a provider not miss a change to sell in an initial start-up as long as the user recognizes the contents as valuable ones. SOLUTION: In charging processing for contents information purchased from an information center where the contents information is stored, contents distribution actual results are stored while the value when the contents information is provided is related to the user provided with the contents information. At a request to purchase the contents information, the past distribution Result of the user is retrieved and when the past distribution result is found, the value charged for at this time and the current value of the contents are compared with each other to calculate the difference amount, and the value of the contents information which is purchased this time is varied according to the difference amount. Furthermore, even a user who cannot have such a return can select value with no retune and makes a purchase at ease. |
