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. 17, 1998
Filed:
Feb. 07, 1996
Joseph P Kerzman, New Brighton, MN (US);
Duane G Kurth, Wyoming, MN (US);
Douglas A Fuller, Eagan, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A method and apparatus for efficiently performing timing analysis on a circuit design. The present invention essentially provides a hybrid between a path enumeration algorithm and a critical path algorithm. As such, the present invention increases the number and degree of timing violations reported by a Critical Path Analysis (CPA) algorithm, while maintaining a performance advantage over a Path Enumeration (PE) algorithm. This is accomplished by providing a number of 'pseudo' clocks to selected latches within the circuit design database, thereby tricking the CPA algorithm into reporting more timing violations than would otherwise be reported.