| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively use an excessive storage area. <P>SOLUTION: In a management device 10 which has a storage section 22a, a determination section 22c and a deletion section 22d, the storage section 22a stores data in a memory section 21, the determination section 22c determines whether or not the size of the data reaches a threshold value which has been determined for each data type, when the storage period of the stored data reaches a storage period which has been determined for each of the data type, and the deletion section 22d deletes the data of the data type which has reached the threshold value from the memory section 21 so that the size of the data of the data type which has reached the threshold value becomes smaller than the threshold value, when it was determined that the size of the data reaches the threshold value which has been determined for each of the data type. <P>COPYRIGHT: (C)2012,JPO&INPIT |
