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:
May. 11, 1999
Filed:
Mar. 03, 1997
Applicant:
Inventors:
Satyamurthy Pullela, Austin, TX (US);
Timothy J Edwards, Austin, TX (US);
Joseph Norton, Austin, TX (US);
Abhijit Dharchoudhury, Austin, TX (US);
David Blaauw, Austin, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364490 ; 364488 ; 364489 ; 364490 ; 364491 ; 364578 ;
Abstract
A slack time, based on a required and actual delay time, is calculated for each node in a circuit (302). For each element in the circuit, a sensitivity (304) and a figure of merit (306) is calculated. A variance is determined for the calculated figure of merits (308). The circuit element having the smallest absolute figure or merit is optimized when the variance is smaller than a predefined threshold (310, 312).