Patent ID: 8255663

Claim:
A system for processing a read request, the system comprising: a read request receiving unit to receive the read request including logical address information from a host interface; a physical address validity determining unit to determine, based on a logical address included in the logical address information, whether a physical address corresponding to the logical address is valid in a translation table via reference to the translation table; a physical address receiving unit to receive the physical address corresponding to the logical address via reference to the translation table when the physical address corresponding to the logical address is valid in the translation table; a read request unit to request data corresponding to the physical address to be read from a flash memory; and a system activation request receiving unit to receive a system activating request including an address of the translation table, from the processor, wherein the system operates independent of a processor, wherein the physical address in the translation table is set to be invalid while the translation table is being changed by performing an operation in the processor.