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:
Aug. 24, 1999

Filed:

Nov. 19, 1996
Applicant:
Inventors:

Masahiro Fukui, Osaka, JP;

Noriko Shinomiya, Osaka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
3955001 ; 39550013 ;
Abstract

Elements such as a transistor having a terminal corresponding to a wire junction are abstracted by using rectangles, and a spit penetrating these rectangles is introduced in a layout area where the rectangles are disposed. On the spit, a wire junction for allocating a wire is provided. The terminals of the rectangles corresponding to the wire junctions and the wire junctions on the spit are set as net targets, and connection information on these net targets is generated. A scan line for scanning the layout area from its left end to its right end and a front for tracing the net targets are introduced. While conducting rightward scanning by the scan line, the front is proceeded from one net target to the other net target. The trace of the front is provided as a wire element.


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