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:
Jul. 01, 2003
Filed:
Jun. 11, 2001
Applicant:
Inventors:
Kazuhiko Kobayashi, Kodaira, JP;
Kou Miyazaki, Kokubunji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/500 ;
U.S. Cl.
CPC ...
G06F 1/500 ;
Abstract
A wiring pattern is divided into sets of long wiring (L1) and sets of short wiring (Ls) by comparison to a reference value. Layout rules of the sets of long wiring (L1) are made different from layout rules of the sets of short wiring (Ls) by using an effect of a Levenson type phase shift. Thereby, an interval (S ) between a set of long wiring (L1) and a set of short wiring (Ls) is made relatively narrower than an interval (S ) between a set of long wiring (L1) and a set of long wiring (L1).