| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent unauthorized data recorded on a rewritable recording medium from being executed and reproduced in combination with data on a Read-Only recording medium. <P>SOLUTION: The Local Storage 18 records a plurality of files, merge management information which specifies a file out of the plurality of files to be used in combination with what is recorded on a Read-Only recording medium, and signature information used for determining the authenticity of the merge management information. The Virtual File System unit 38 determines the authenticity of the merge management information based on the signature information. When the merge management information is determined to be authentic, the Virtual File System unit 38 generates package information which indicates a new file structure obtained by adding the file specified by the merge management information to the file structure of the Read-Only recording medium. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
