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:
Apr. 28, 2009
Filed:
Sep. 01, 2004
Applicants:
Junko Matsumoto, Kanagawa, JP;
Tetsuya Akimoto, Kanagawa, JP;
Inventors:
Junko Matsumoto, Kanagawa, JP;
Tetsuya Akimoto, Kanagawa, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/45 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a method of delay calculation of relative timing paths of an integrated circuit, each of the paths contains at least one stage. The method is achieved by calculating an on-chip variation depending on a systematic component and an on-chip variation depending on a random component; and by carrying out delay calculation of relative timing paths by using the on-chip variation depending on the systematic component and the on-chip variation depending on the random component.