Patent ID: 8595409
Filing Date: 2013-11-26
Classification: G06F

Abstract:
1. An apparatus for reorganizing mapping information in a flash memory comprising a physical unit comprising a plurality of physical sectors having sequential offset numbers, the apparatus comprising: a sector-managing module that secures at least one mapping sector from among the plurality of physical sectors, and determines whether data is recorded up to a predetermined physical sector, among the plurality of sectors, having an offset number immediately below an offset number of a mapping sector among the at least one mapping sector; and a mapping-information-recording module which records, on the mapping sector, mapping information indicating a respective relation of at least one physical sector, having an offset number equal to or less than the offset number of the predetermined physical sector, among the plurality of physical sectors, and at least one logical sector corresponding to the at least one physical sector, if the sector-managing module determines that the data is recorded up to the predetermined physical sector, wherein the at least one physical sector is a sector having an offset number 0 through a sector having an offset number N−1, and the mapping sector is a sector having an offset number N in the physical unit, where N is an integer greater than 1, and a number of the plurality of physical sectors of the physical unit is greater than N, and wherein the mapping sector is used such that, for reorganizing or updating the mapping information during initialization of the flash memory, the mapping sector is referred to without reading all of the plurality of sectors.