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. 09, 2022
Filed:
Dec. 28, 2020
Apparatus and method for constructing aho-corasick automata for detecting regular expression pattern
Somansa Co., Ltd., Seoul, KR;
SOMANSA CO., LTD., Seoul, KR;
Abstract
An apparatus for constructing Aho-Corasick automata according to the present invention includes a concatenative normal form transforming unit configured to receive a regular expression that is expressed using an operator including a concatenation and an alternation and transform the regular expression into concatenative normal forms (wherein each concatenative normal form is defined as a form in which character alternations are connected by concatenation); a trie generating unit configured to generate a trie from the concatenative normal forms by updating states and transitions of the trie (wherein each transition corresponds to a set of characters) while processing each concatenative normal form in order; and a failure link creating unit configured to create a failure link for each state of the trie by using a set of characters corresponding to each transition of the trie.