| 摘要 |
PROBLEM TO BE SOLVED: To easily introduce a latest version to an information processor even if recorded contents are upgraded repeatedly. SOLUTION: In a read-only ROM area where the contents are recorded, RAM area discrimination information 105 for discriminating whether or not a RAM area is a rewritable area for the recorded contents is recorded. In this case, since it is possible to immediately discriminate that the RAM area is the rewritable area for the recorded contents, the contents are upgraded, and when recording the information on the upgrading in the RAM area, old information unnecessary for introducing the contents of the latest version can be eliminated (deleted), it becomes possible to utilize the RAM area effectively. Therefore, even if the contents are upgraded repeatedly, it becomes possible to store the information necessary for newly introducing the latest version of the contents in a single sheet of information recording medium. COPYRIGHT: (C)2006,JPO&NCIPI
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