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:
Feb. 15, 2011
Filed:
Nov. 18, 2005
In-ho Moon, Portland, OR (US);
In-Ho Moon, Portland, OR (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
Ordinary minterm counting (OMC) and weighted minterm counting (WMC) are applied as combinational design discriminators to a pair of combinational designs Dand D. OMC assigns the same weight to each minterm, while WMC assigns a weight that can vary. For application of minterm counting, Dand Dcan be converted into BDDs. The size of the BDDs can be reduced by assigning binary values to some of the input variables. If the minterm counts of Dand Dare within a certain tolerance, then Dand Dcannot be distinguished. Even if Dand Dare determined to represent different functionalities, they may still be sufficiently related such that classification of them as differing functionalities is inappropriate. Each such test of relatedness, between a pair of designs Dand D, can be referred to as an 'exception.' Minterm counting can also be applied when don't cares are part of a design specification. Exceptions can apply to such minterm counts.