| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a content reproduction system capable of prohibiting content reception and reproduction control to content reproduction apparatuses installed abroad. <P>SOLUTION: When a mobile phone 5 transmits an authentication request including a mobile phone type number to an authentication server, an authentication server 2 refers to a mobile phone type number table to judge whether authentication is possible or not, In the mobile phone type number table, a fact that a type number available only domestically can be authenticated is registered and a fact that a type number also available abroad can not be authenticated is registered. The authentication server 2 authenticates the type number available only domestically but does not authenticate the type number available abroad. Therefore, when the mobile phone 5 connects to the authentication server 2 and transmits an authentication request in a state where the mobile phone 5 and a content reproduction apparatus 4 are located abroad, since the mobile phone 5 available abroad is not authenticated, the content reproduction apparatus 4 can be prevented from being controlled by the mobile phone 5 abroad. <P>COPYRIGHT: (C)2008,JPO&INPIT |
