| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an information processor generating a recording medium where electronic data usable, only when recorded on a specified recording medium are recorded, the recording medium capable of limiting movement of the electronic data to another recording medium which is different from the specified recording medium. <P>SOLUTION: The information processor which records electronic data on a recording medium has a signature information generating means of generating signature information of the electronic data, based on medium identification information for identifying the recording medium and the electronic data, a recording means of recording the generated signature information, the electronic data, and duplication permit information showing whether the electronic data can be duplicated on the recording medium, and a validating/invalidating means of validating or invalidating the electronic data. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
