| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide configuration for effectively performing content usage control using content usage control information. <P>SOLUTION: The content usage control information to be set in accordance with contents (a CPS unit) is divided into basic control information and extension control information, for example, a basic reproducing device having no network connecting function performs content usage according to the basic control information and an extension reproducing device having the network connecting function performs the content usage according to the extension control information. Furthermore, an extension format flag, CPU unit identification data, etc. are set in the content usage control information, decision of use propriety of the contents according to the aspect of a device and content discrimination are easily performed on the basis of the flag and the identification data, etc. and exact content is used. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
