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:
Jul. 08, 2003
Filed:
Jul. 02, 1999
Robert Paul Kurshan, New York, NY (US);
Kedar Sharadchandra Namjoshi, Westfield, NJ (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A method for checking on cyclicity of a set of definitions employs a simple, non-computational definition of constructivity and a symbolic algorithm based on the new, simple to implement, formulation for variables with arbitrary finite types. This is accomplished by extending variable type to include the “undeterminable” value ⊥ (read as “bottom”). This formulation is non-computational and easily extensible to variables with any finite type. The formulation also handles definitions of indexed variables in the same manner. The set of definitions is then checked to determine whether any of the variables assume the value is ⊥.