| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging technique in the case of using an electronic catalogue in another service. SOLUTION: An electronic catalogue server 20 retrieves catalogue data meeting a retrieval condition from a user terminal 10, draws up charging data and charging reference data, and transmits the catalogue data and charging data to the user terminal 10. Subsequently, in the case of using the catalogue data to use the service provided by a secondary use server 30, the user terminal 10 transmits a use start notice to the electronic catalogue server 20 and transmits the catalogue data and charging data to the secondary use server 30. The secondary use server 30 transmits a transmit request for the charging reference data containing the same processing ID as the processing ID contained in the charging data to the electronic catalogue server 20. The catalogue server 20 transmits the charging reference data containing the same processing ID to the secondary use server 30. The secondary use server 30 transmits charging ascertain data to the electronic catalogue server 20 when the value of received check sum agrees. |
