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. 20, 1999
Filed:
Mar. 18, 1997
Ronald H Hardin, Pataskala, OH (US);
Robert Paul Kurshan, New York, NY (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A method and apparatus for verifying the behavior of properties or functions of a system by forming a reduced model for each property of the system, and running a given simulation operation on the reduced model to verify the behavior of each said property. When a property or function does not behave as expected, the system model is adjusted, and only those functions having a property affected by the adjustment are rechecked. In one illustrative embodiment, a system model is reduced by eliminating all variables having no effect on the function or property being checked. The resulting reduced model can be further reduced by adjusting the range of each variable therein to a minimum range necessary to check the behavior of that specific property. If it becomes necessary to change the system model in order to fix a problem relative to one property, then only those properties having a reduced model affected by that change or fix are re-verified.