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. 06, 2001
Filed:
Oct. 07, 1997
Ronald H. Hardin, Pataskala, OH (US);
Robert Paul Kurshan, New York, NY (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
Verification systems which employ automata-theoretic formal verification use a model automaton made from a system process (,) representing the system and a task automaton (,) representing the task and use the model automaton to test (,) whether the language of the system process is contained in the language of the task automaton. An improved technique reduces the computational complexity of the language containment testing by producing a model (,) which represents a system which has been automatically localized with regard to a task. Another technique reduces the computational complexity of stepwise refinement (,). In stepwise refinement, the system automaton is refined a step at a time until it reaches the complexity of a practical implementation. The computational complexity of the stepwise refinement is reduced by a technique which permits language containment to be tested using a set of models made from process-automaton pairs rather than process-process pairs.