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:
May. 15, 2012
Filed:
Dec. 14, 2009
Koutarou Sasage, Kawasaki, JP;
Koutarou Sasage, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A storage switch includes a first bitmap generator for generating a first bitmap, a controller for controlling copying of data, a first modifier, a second bitmap generator for generating a second bitmap, a second modifier, a merging controller for controlling to generate a third bitmap. When the writing of data is performed during the copying of data, the merging controller modifies a part of the index bits in the third bitmap corresponding to a part of the index bits of the first bitmap modified by the first modifier on account of the copying of data performed before the writing of data, and merges the second bitmap modified by the second modifier and the third bitmap modified by the merging controller. The controller resumes copying of data of any sub-regions on the basis of the merged bitmap.