Patent ID: 6701471
Filing Date: 2004-03-02
Classification: G06F

Abstract:
A storage device comprising:a system interface unit which carries out interface with a host system via an external bus; a controller coupled with said system interface which analyzes commands received by said system interface unit from said host system and controls operations to be performed within said storage device; a non volatile semiconductor memory coupled with said controller; and an error correction unit, coupled with said non-volatile semiconductor memory, which performs an error detection and error correction operation for data stored in said non-volatile semiconductor memory; wherein said non-volatile semiconductor memory is electrically erasable and electrically programmable and stores data from said host system via said system interface unit, wherein in response to a read command received by said system interface unit, said controller carries out concurrent operations of data transferring of data after the error detection and error correction operation by said error correction unit to said host system via said system interface unit and of data transferring of subsequent data for the error detection and error correction operation from said non-volatile semiconductor memory to said error correction unit.