Patent ID: 8031536
Filing Date: 2011-10-04
Classification: G06F,G11C

Abstract:
1. An apparatus having a storage device, comprising: an information equipment serving as a host system for the storage device, wherein the storage device comprises: a plurality of flash memory chips each of which are electronically erasable in units of erasure blocks; and a controller for accessing one or more of the flash memory chips in response to an access from the host system, wherein each of the flash memory chips comprises a data area that stores data corresponding to an access from the host system and a buffer that temporally stores the data corresponding to the access from the host system before the data is stored in the data area, wherein the buffer is different from the data area, wherein a capacity of the buffer corresponds to a plurality of the erasure blocks, and wherein one or more of the flash memory chips transfers data between an erasure block having a first erasure frequency to an erasure block having a second erasure frequency, wherein the first erasure frequency is greater than the second erasure frequency.