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:
Dec. 05, 2006
Filed:
Dec. 10, 2004
Toshitaka Mizuguchi, Kawasaki, JP;
Jun Funakoshi, Kawasaki, JP;
Seiji Yamagata, Kawasaki, JP;
Tsuyoshi Higuchi, Kawasaki, JP;
Toshitaka Mizuguchi, Kawasaki, JP;
Jun Funakoshi, Kawasaki, JP;
Seiji Yamagata, Kawasaki, JP;
Tsuyoshi Higuchi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A differential comparator which outputs positive and/or negative logic signals to an output terminal according to the coincidence/non-coincidence of first and second input signal levels inputted to first and second input terminals, respectively, comprises an offset cancel function composed of an offset capacitor device provided on the differential comparator side of the first and second terminals, a first switch for short-circuiting the first and second input terminals in such a way as to form a closed loop including the offset capacitor device, and a second switch for short-circuiting both the connection point between the offset capacitor device and the differential comparator, and the output terminal.