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:
Jul. 16, 2013
Filed:
Feb. 21, 2008
Kazuhiko Ikeuchi, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
According to an aspect of an embodiment, a method of storing user data (UD) with parity data (PD) for correcting the UD in a storage apparatus comprising disk units, each of the disk units storing data in data blocks(DBs), each of the DBs storing the UD or associated PD and position information(PI) indicative of the location of the DBs, comprising: obtaining the UD, dividing the UD into UD blocks (UDBs) which are adapted to be stored in the DBs, and determining which UDBs are to be stored into which DBs, respectively; determining PI of the DBs for storing the UDBs; generating PD for a group of UDBs and associated PI by parity operation using a weighting function to the UDBs and the PI; determining PI for the PD for said group by modifying a part of the PD; and storing the group of the UDBs, associated PI, and the PD.