| 摘要 |
PROBLEM TO BE SOLVED: To improve data capacity efficiency by overlapping or eliminating data to which different codes are allocated for the respective data.SOLUTION: A storage device includes a flash memory controller in which one or a plurality of flash memory modules is incorporated. Each of the flash memory modules comprises: at least one flash memory chip providing a storage region; and a controller controlling write/read of data including user data and a guarantee code annexed to the user data to/from the storage region of the flash memory chip. The controller divides each of a plurality of pieces of the data to which the user data is common into the user data and the guarantee code, stores one of the user data in a predetermined unit region of the storage region, and stores the respective guarantee codes annexed to a plurality of the user data in a predetermined unit region of the storage region by coupling the guarantee codes. |
