| 摘要 |
PROBLEM TO BE SOLVED: To provide a data distribution method and a data distribution system that can automatically impose charging on a user accompanying acquisition and conversion of contents data by the user, in addition to the authentication of the user. SOLUTION: The data distribution system is configured, with at least a user terminal 303 and contents servers 301, 302 being interconnected via a network and the contents servers distributes contents data to the user terminal upon the request of the user terminal 303. The data distribution server is provided with a certificate issue device 305, that is connected to the user terminal and the contents servers via the network and issues digital identification information to the user terminal and the contents servers, with a data converter 304 that converts the content data into data, in a form that can be processed by the user terminal, and a charging device 501 that conducts charging corresponding to the distribution of the contents data and the conversion of the contents data upon the request from the contents servers and the data converter. The user terminal 303, the data converter 304 and the charging device 501 carry out transmission reception, only when mutual authentication on the basis of the digital identification information from the certificate issue device 305 is successful. |
