| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure reliable data writing in a non-volatile storage unit, and suppress delay of startup time of a system. <P>SOLUTION: A non-volatile storage unit 7 comprises a plurality of divided storage areas, and one pair of divided storage areas stores the same divided data as an invalid storage area and a valid storage area. A count unit 15 counts a number of times that data is read out from the storage unit 7. When an operation stop state of a device is detected and the counted number reaches the change attainment number, a storage change control unit 17 performs control to change one pair of divided storage areas other than the divided storage area set as the invalid storage area into an invalid storage area and a valid storage area. In the changed one pair of divided storage areas, the storage change control unit 17 controls and stores the divided data of the valid storage area with respect to the invalid storage area. <P>COPYRIGHT: (C)2013,JPO&INPIT |
