| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data protection device for a storage device that can prevent data having been transferred to a cache area from disappearing. <P>SOLUTION: There is provided a data protection device for a storage device 13 characterized in: a nonvolatile data storage area 14 which is provided to a controller 10 and stores data; and a cache area 15 which temporarily stores data stored in the nonvolatile data storage area 14; the data protection device for the storage device including an internal power unit 11 which converts the voltage of electric power supplied from an input power supply into a predetermined voltage; a power supply monitoring circuit 12 which monitors the voltage of the electric power supplied from the input power supply and outputs a voltage drop signal when detecting the voltage dropping; a central arithmetic processing circuit 16 which outputs a write command for writing the data stored in the cache area 15 to the nonvolatile data area 14 when the voltage drop signal is received; and writing the data stored in the cache area 15 to the nonvolatile data storage area 14 when the write command is output. <P>COPYRIGHT: (C)2013,JPO&INPIT |
