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. 13, 2001
Filed:
Dec. 14, 1999
Applicant:
Inventors:
Hideyuki Hagino, Kumagaya, JP;
Susumu Hoshino, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/556 ;
U.S. Cl.
CPC ...
G06F 7/556 ;
Abstract
The computational circuit adds a drain current of a first MIS transistor which is driven by inputting a signal obtained by superimposing an AC signal to a DC voltage, and a drain current of a second MIS transistor which is driven by inputting a signal obtained by superimposing the same AC signal as above but reversal in phase to the DC voltage, and subtracts a drain current of a third MIS transistor driven by supplying the DC voltage to the gate thereof so as to erase DC components of the outputs of the first and second MIS transistors. Thereby, it is possible to produce a current in proportional to square of the AC signal.