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. 04, 2000
Filed:
Nov. 17, 1997
Applicant:
Inventor:
Hideharu Koike, Kawasaki, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330253 ; 330301 ;
Abstract
Two pairs of differential input voltages are converted into two pairs of differential voltages through voltage converters whose output voltages are determined only by the input voltage amplitudes. Of the two pairs of differential input voltages, a voltage across the positive terminals and a voltage across the negative terminals of the voltage converters are converted into two pairs of differential currents through voltage-to-current converters. An output voltage proportional to the difference between the two pairs of differential currents is obtained with improved linearity through a current-to-voltage converter.