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:
Jun. 01, 2010
Filed:
Jul. 13, 2005
Patrick J. Malloy, Washington, DC (US);
Michael Cohen, Chicago, IL (US);
Alain J. Cohen, Washington, DC (US);
Patrick J. Malloy, Washington, DC (US);
Michael Cohen, Chicago, IL (US);
Alain J. Cohen, Washington, DC (US);
OPNET Technologies, Inc., Bethesda, MD (US);
Abstract
A system/method searches a traffic stream for a sequence of 'matching' packets that exhibit a high degree of correlation or similarity to a sequence of 'reference' packets. The correlation between matching and reference packets is based on a degree of correspondence between individual packets, as well as the sequence-order of the corresponding packets. A variation of the Needleman-Wunsch algorithm is preferably used to select corresponding packets in the traffic stream that provide a sequence-order that best matches the sequence-order of the reference packets, based on a measure of the correspondence for each match, and a penalty associated with each non-match. The algorithm is further modified to reduce the required search-space for finding corresponding packets in the traffic stream.