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:
Aug. 04, 2015
Filed:
Aug. 27, 2012
Liwei Ren, Sunnyvale, CA (US);
Qiuer Xu, Jiangsu, CN;
Trend Micro Incorporated, Tokyo, JP;
Abstract
Difference data is generated between a reference file and a target file that are orderly dependent having common blocks that appear in the same order in both the reference and target files. The difference data is generated by comparing hash values of chunks of the reference file against hash values of parts of the target file to identity copy operations between the reference and target files. Chunks of the reference file and parts of the target file are loaded into main memory to create hashes for comparison and unloaded from the main memory after exhaustion. The difference data is included in a difference file, which is provided to one or more endpoint computers. In an endpoint computer, the target file is reconstructed using a copy of the reference file and the difference data from the difference file.