| 摘要 |
<P>PROBLEM TO BE SOLVED: To freely distribute digital contents from a mobile network operator. <P>SOLUTION: A commodity such as snack with premium is sold with the usage fee of digital contents added to the price thereof. The address and use right ID of a Web site are printed on the inside of the package of the commodity. A user accesses the site of this address through a cellular phone and inputs the use right ID. A server which stores the digital content has DRM (digital right management) function, and permits the use of a content such as game only to the cellular phone that is a transmitter of the valid use right ID for a predetermined time. If the user wants to continue the use of the content even after the lapse of the predetermined time, the user can enjoy the content again from a state where the content is ended last time by repurchasing the commodity and inputting the use right ID. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
