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:
Mar. 18, 2003
Filed:
Aug. 06, 2001
Hiromi Nanba, Kawasaki, JP;
Tohru Mizutani, Kawasaki, JP;
Makoto Ikeshita, Sapporo, JP;
Masato Takeyabu, Sapporo, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An evaluation circuit repeats processing in which an output VD thereof is reset, there is obtained repeatedly given times a difference between sampled output voltages Vo of a replica circuit R when respective times t and t have elapsed after a voltage Vi is step-inputted to the replica circuit R, and the differences are successively summed. A comparator circuit compares a difference cumulation voltage VD with a reference voltage VS. A bias adjustment circuit steps up the bias currents of the replica circuit R and an adjusted circuit at every this given times if VD>VS, and ceases the adjustment if VD<VS.