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. 14, 2009
Filed:
Feb. 22, 2006
Applicant:
Yuji Yamamoto, Yokohama, JP;
Inventor:
Yuji Yamamoto, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system for designing a semiconductor integrated circuit includes an extraction module for extracting through wiring tracks linearly passing through each of area priority cells and yield priority cells, a layout data generator for generating second layout data from first layout data by replacing the area priority cells with the yield priority cells; and a calculator for calculating a ratio of the number of intersections at which through wiring cannot be laid to the number of all of the intersections defined in the semiconductor integrated circuit.