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AssigneeRenesas Technology Corp.
InventorsHajime Yamagami, Kouichi Terada, Yoshihiro Hayashi, Takashi Tsunehiro, Kunihiro Katayama, Kenichi Kaki, Takeshi Furuno
Estimating the term…
A semiconductor disk wherein a flash memory into which data is rewritten in block unit is employed as a storage medium, the semiconductor disk including a data memory in which file data are stored, a substitutive memory which substitutes for blocks of errors in the data memory, an error memory in which error information of the data memory are stored, and a memory controller which reads data out of, writes data into and erases data from the data memory, the substitutive memory and the error memory. Since the write errors of the flash memory can be remedied, the service life of the semiconductor disk can be increased.
A storage device employing a flash memory which is divided into a plurality of physical sectors identified by physical addresses, wherein said flash memory carries out a write operation of a write data into a selected one of said plurality of physical sectors in response to a logical address accompanied with said write data from a host system, said storage device including:
Dependencies are inferred from the claim text.