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:
Nov. 30, 2010

Filed:

Nov. 18, 2005
Applicant:

Yuuichi Nakamura, Tokyo, JP;

Inventor:

Yuuichi Nakamura, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01); H03K 19/003 (2006.01); H01L 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A wiring design system for semiconductor integrated circuit which realizes a low power consumption in a grid-shaped clock wiring within a semiconductor integrated circuit is provided. A wiring design systemfor semiconductor integrated circuit which designs the gird-shaped clock wiring for uniformly distributing the clock signals to the flip flop circuits arranged within the semiconductor integrated circuit, wherein, of the clock wiring lines forming the grid-shaped clock wiring, a clock wiring line having a smaller effect on the distribution operation of the clock signals in the grid-shaped clock wiring is selected and thinned out as a less necessary clock wiring line.


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