| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data processor capable of preventing use of data which is stored in a storage medium with expired validity. <P>SOLUTION: In the data processor 101, a removable media detection part 201 detects attachable/detachable removable media which become usable; a validity acquisition part 203 acquires the validity of digital data stored in the removable media from information embedded in the digital data; a present date and time acquisition part 204 acquires date and time information at present; a validity judgment part 202 compares the validity acquired by the validity acquisition part 203 with the present date and time acquired by the present date and time acquisition part 204 to judge whether or not the validity of the digital data is expired; and when it is judged that the validity of the digital data is expired by the validity judgment part 202, a warning part 205 warns that the data whose validity is expired is stored in the removable media. <P>COPYRIGHT: (C)2007,JPO&INPIT |
