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. 16, 2003
Filed:
Nov. 13, 2002
Applicant:
Inventors:
Assignee:
Winbond Electronics Corporation, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/100 ;
U.S. Cl.
CPC ...
H02M 1/100 ;
Abstract
The current controlled sigmoid neural circuit is used for approximating sigmoid function and is simple constructed, current controlled and gain adjustable circuit with highly precision. The present invention comprises a voltage generator for converting a current input into a voltage, a pair of differential amplifier for generating sigmoid-like function and few pairs of current mirrors for providing reference currents. By using adjustable reference current and gain factor, the circuit has a large range and high noise immunity and can approximate sigmoid function with insignificant error.