| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a means for preventing an unauthorized reception in a streaming distribution. <P>SOLUTION: A distribution server 5 distributes streaming data to a player 12 authorized in advance at a client terminal 1. The streaming data includes a transmission command for transmitting authentication data to a management server 6 from the player 12. Here, the transmission of the authentication data is performed one or a plurality of times during streaming reproduction. The management server 6 uses the authentication data transmitted on the basis of the transmission command to authenticate the terminal 1. Further, if in authentication using the authentication data fails, the management server 6 stops the distribution of the streaming data from the distribution server 5. <P>COPYRIGHT: (C)2010,JPO&INPIT |
