| 摘要 |
A user carries out charging processing at the time when he/she downloads or outputs a content, and also carried out the charging processing in accordance with the size, resolution, output method, etc. of the content when the charging is carried out. There are equipped a content server for storing contents, a portal WEB server which a user accesses to use and purchase a content, and a commerce server for managing information on the user and information on content use/purchase of the user, and the content contains sample data of the content, data, etc. of the content, charging information on compensation information of the content, attribute information for control of use of the content, and a unique ID for identifying the content. Charging at the output time is carried out by the processing of setting the above authentication key when the user downloads the content, the processing of transmitting the content to the user terminal in response to use request information of the content indicated and transmitted by the authenticated user, and detecting the attribute information contained in the content at the user terminal, and the processing of decoding the content on the basis of the use request information and outputting the content when the charging processing based on the use request information is authenticated and the content is output, and when the charging processing based on the use request information is not authenticated, the processing of making it impossible to decode and output the content is carried out. |
