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:
Jan. 21, 1992
Filed:
Nov. 23, 1988
Nobuo Yoshida, Ohme, JP;
Kazuo Koide, Hamura, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a gate array including a plurality of output buffer circuits whose output levels change simultaneously with one another, a power source voltage or a reference voltage is supplied to the plurality of output buffer circuits whose output levels change simultaneously with one another by the same and exclusive power source voltage wiring or reference voltage wiring and is separated from power source voltage wirings or reference voltage wirings connected to other output buffer circuits and this wiring design is made by DA (Design Automation) combining fixed patterns with connection patterns. This designing method can prevent any adverse influences of the operations of the output buffer circuits whose output levels change simultaneously with one another on the other output buffer circuits and on input buffer circuits.