| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance efficiency in managing and providing contents by unit by recording contents in an information recording medium by downloading, copying, or the like. <P>SOLUTION: In constitution to record utilization management contents in data recordable media such as an R/RE type disk, contents certificate of each unit (CPS unit), license information, and unit-based token including signature data based on data including media discrimination information of content recording destination are generated, these management data are recorded in media together with a content management unit. By using this constitution, since management data are set for each unit, when contents are added, unit-based management data can be quickly obtained, generated, or recorded. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
