Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2009-02-26
2011-11-29
Shah, Sanjiv (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C714S006100, C714S006200
Reexamination Certificate
active
08069301
ABSTRACT:
A data control apparatus includes a mapping-table managing unit that manages a mapping table that is associated with a corrupted-data recovery function of recording data and error correcting code data as redundant data that is given separately from the data, distributed and stored in units of stripe blocks in the plural nonvolatile semiconductor memory devices, the mapping table containing arrangement information of the data and the error correcting code data; a determining unit that determines whether to differentiate frequencies of writing the data into the semiconductor memory devices; and a changing unit that changes the arrangement information by switching the data stored in units of the stripe blocks managed using the mapping table to differentiate the frequencies of writing the data into the semiconductor memory devices, when the determining unit determines that the frequencies of writing the data into the semiconductor memory devices are to be differentiated.
REFERENCES:
patent: 7496811 (2009-02-01), Kanno
patent: 7865761 (2011-01-01), Chilton
patent: 2007/0130496 (2007-06-01), Kanno
patent: 2007/0174740 (2007-07-01), Kanno
patent: 2008/0205145 (2008-08-01), Kanno et al.
patent: 2008/0276038 (2008-11-01), Tanaka et al.
patent: 2008-40713 (2008-02-01), None
U.S. Appl. No. 12/396,006, filed Mar. 2, 2009, Sato, et al.
U.S. Appl. No. 12/395,811, filed Mar. 2, 2009, Fukutomi, et al.
U.S. Appl. No. 12/398,608, filed Mar. 5, 2009, Fukutomi, et al.
U.S. Appl. No. 12/400,863, filed Mar. 10, 2009, Kanno.
U.S. Appl. No. 12/404,861, filed Mar. 16, 2009, Kanno, et al.
U.S. Appl. No. 12/713,631, filed Feb. 26, 2010, Fukutomi, et al.
U.S. Appl. No. 12/513,860, filed May 7, 2009, Nagadomi, et al.
U.S. Appl. No. 12/555,274, filed Sep. 8, 2009, Kanno, et al.
U.S. Appl. No. 12/566,236, filed Sep. 24, 2009, Yano, et al.
U.S. Appl. No. 12/883,796, filed Sep. 16, 2010, Fukutomi, et al.
David A. Patterson et al., A Case for Redundant Arrays of Inexpensive Disks (RAID), Computer Science Division Department of Electrical Engineering and Computer Sciences, Proceedings of the 1988 ACM SIGMOD, 1988, pp. 109-116.
Asano Shigehiro
Fukutomi Kazuhiro
Kanno Shin-ichi
Sato Hideaki
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Shah Sanjiv
Tsui Daniel
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