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.

Date of Patent:
Jul. 15, 2008

Filed:

Apr. 15, 2005
Applicants:

Kenichi Ushiyama, Kawasaki, JP;

Hisayoshi Oba, Kawasaki, JP;

Inventors:

Kenichi Ushiyama, Kawasaki, JP;

Hisayoshi Oba, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01); G06F 9/45 (2006.01);
U.S. Cl.
CPC ...
Abstract

A timing analysis apparatus includes a data extracting unit that extracts objective circuit data concerning an objective circuit to become an objective of a timing analysis from layout data indicating circuits on a large-scale-integration chip; a time calculating unit that calculates a delay time of the objective circuit based on the objective circuit data; a parameter calculating unit that calculates a parameter indicating a size of an arrangement area of the objective circuit based on the objective circuit data; an information calculating unit that calculates variation information concerning a variation of the delay time; and a timing analyzing unit that performs the timing analysis of the objective circuit using the delay time and the variation information.


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