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:
Feb. 25, 2014
Filed:
Mar. 16, 2012
Applicant:
Kyoko Kato, Tokyo, JP;
Inventor:
Kyoko Kato, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/00 (2006.01); G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30067 (2013.01);
Abstract
A duplicate file detection devicehas a storage unit, a calculation unit, and a detection unit. The storage unitstores calculation information that defines data used in the calculation of the hash values of files in association with the extensions of the files. The calculation unitacquires the calculation information associated with the extension of each file to be examined from the storage unitand uses the acquired calculation information to calculate the hash value of each file to be examined. The detection unitdetects duplicated files by comparing the hash values of the files to be examined that are calculated by the calculation unit