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.

Date of Patent:
Oct. 18, 2016

Filed:

May. 05, 2011
Applicants:

Steed Zheng, Nanjing, CN;

Chao Fang, Nanjing, CN;

Jan Deng, Nanjing, CN;

Inventors:

Steed Zheng, Nanjing, CN;

Chao Fang, Nanjing, CN;

Jan Deng, Nanjing, CN;

Assignee:

Trend Micro Inc., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/16 (2006.01); H04L 29/06 (2006.01); G06F 21/56 (2013.01);
U.S. Cl.
CPC ...
H04L 63/145 (2013.01); G06F 21/564 (2013.01);
Abstract

Each time a version of a virus pattern is downloaded to a local computer a scanned file cache is generated including all files scanned by that version. A modified file cache is also generated including all files modified while that version is present. After a minimum time interval or after a minimum number of virus pattern versions, a white list is generated by combining the existing white list, versions of the scanned file cache and the modified file cache. The white list (and the other caches) is represented by a single binary digit per file that is indexed by the i-node number of the file's i-node. A bundle of files (or their unique identifiers) on the white list is created and uploaded to a cloud storage service. A local computer sends a request to the storage service for the white list for a particular bundle which is then downloaded to the local computer.


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