Patent ID: 7516296

Claim:
A memory storage device is adapted to read/write data with an external system, comprising: a flash memory adapted to store the read/written data, the flash memory having a plurality of memory blocks, each of the memory blocks having a plurality of memory pages, and the memory blocks distinguished into at least one particular data management area and at least one common data management area in logical block address; and a control unit, further comprising: an area map table adapted to map the logical block address and physical block address of the memory blocks; and a plurality of page map tables produced by each of the memory blocks and adapted to relate the logical block address and the physical block address of the memory pages; wherein the control unit writing data to the memory pages of the memory blocks in the particular data management area according to the area map table and the corresponding page map tables by using a method of dynamic deviation value, and updating the corresponding area map table and the page map tables to be read and written later.