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:
Apr. 05, 2011

Filed:

Dec. 12, 2007
Applicant:

Yusuke Yamaguchi, Chiba, JP;

Inventor:

Yusuke Yamaguchi, Chiba, JP;

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

Standard cell libraries and methods of designing semiconductor integrated circuits are provided. At least one of delay-adjusting cell data and load-capacitor cell data is stored in the cell library for a specified type standard cell in addition to the standard cell data. The specified type standard cell may be utilized as a delay-adjusting cell or a load-capacitor cell. Accordingly, precise adjustment of delay times during designing a semiconductor integrated circuit is enabled without requiring registering a new standard cell in the cell library. Semiconductor integrated circuits are also provided that are configured to allow precise adjustment of delay times in the semiconductor integrated circuits.


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