MEMORY SYSTEM FOR PERFORMING AN ASYMMETRY MAPPING ACTION AND AN ADDRESS MAPPING METHOD THEREOF, SPECIFICALLY CONCERNED IN CARRYING OUT THE ASYMMETRY MAPPING ACTION TO REDUCE BLOCK REMOVAL OPERATION AND PAGE COPYING

摘要

PURPOSE: A memory system for performing an asymmetry mapping action and an address mapping method thereof are provided to increase a usage rate of a log block page, thereby improving duration and performance of the memory system.;CONSTITUTION: An FTL(Flash Translation Layer)(320) receives an LA(Logical Address) from a file system(310). The FTL translates the logic address into a PA(Physical Address) through a mapping table. A block mapping table(321) translates an LBN(Logical Block Number) into a PBN(Physical Block Number). A page mapping table(322) performs page mapping of a log block and a data block. A data area(331) stores user data. The FTL leaves the second page area to update data stored in the first page area.;COPYRIGHT KIPO 2010