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:
May. 16, 1995
Filed:
Sep. 04, 1990
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364488 ; 364578 ;
Abstract
In verifying an LSI layout pattern, the whole layout pattern is converted into circuit data and a subcircuit to be verified is picked up and subjected to simulation. After converting the layout pattern into the transistor level circuit data, the transistor level circuit data is transformed into a logic gate level circuit data while judging a clocked gate included in the subcircuit. After picking up a subcircuit in a predetermined manner, an approximate load is connected to the interface port of the picked-up subcircuit.