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, 2003
Filed:
Aug. 20, 1997
Applicant:
Inventors:
Shigeru Kuriyama, Hyogo, JP;
Michio Komoda, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/48 ; G06F 1/750 ; G06F 7/60 ;
U.S. Cl.
CPC ...
G06G 7/48 ; G06F 1/750 ; G06F 7/60 ;
Abstract
A gate delay calculation apparatus includes an R parameter storage file for prestoring a parameter for expressing a source resistance value of an RC model as a continuous time function, an R determination portion for selectively extracting the parameter prestored in the R parameter storage file from the amount of input waveform gradient and output load model and a gate delay determination portion for calculating gate delay based on the source resistance value expressed by the parameter extracted by R determination portion and the output load model.