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:
May. 07, 2013
Filed:
Dec. 30, 2011
Evgueni I. Goldberg, Boston, MA (US);
Panagiotis Manolios, Sharon, MA (US);
Evgueni I. Goldberg, Boston, MA (US);
Panagiotis Manolios, Sharon, MA (US);
Northeastern University, Boston, MA (US);
Abstract
A new method is presented for eliminating existential quantifiers from a Boolean CNF (Conjunctive Normal Form) formula. This new method designs circuits by solving a quantifier elimination problem (QEP) by using derivation of dependency sequents (DDS). This new method begins with a first quantified conjunctive normal form formula, determines dependency sequents for the left branch and the right branch of a branching variable, resolves dependency sequents derived in both branches, and designs a circuit using a current formula having less variables than the first quantified conjunctive normal formula. Utility of this method includes verification, in particular, determining reachability of a state of a design.