The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2015
Filed:
Oct. 05, 2012
Applicant:
Fujitsu Limited, Kawasaki-shi, JP;
Inventors:
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/00 (2006.01); G06F 11/10 (2006.01); G06F 12/02 (2006.01); G06F 12/08 (2006.01);
U.S. Cl.
CPC ...
G06F 11/108 (2013.01); G06F 12/0246 (2013.01); G06F 12/0866 (2013.01); G06F 2212/214 (2013.01); G06F 2212/7209 (2013.01);
Abstract
A write DMA includes a write unit, a read unit and a parity generation unit. The read unit reads parity data from one of two NAND flashes storing the parity data therein. The parity generation unit generates parity data based on the read parity data and a plurality of stripes obtained by dividing user data. The write unit writes a stripe into any of a plurality of NAND flashes storing stripes therein, and writes generated parity data into the other NAND flash from which parity data is not read.