A modular current-mode classifier circuit for template matching application

Author

Liu, Bin-Da ; Chen, Chuen-Yau ; Tsao, Ju-Ying

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

47

Issue

2

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

145

Lastpage

151

Abstract

In this work, a current-mode Euclidean distance calculator circuit is proposed to play the role of a classifier. This classifier circuit is designed based on a subtracter circuit, an absoluter circuit, a squarer/divider circuit, and a square-rooter/multiplier circuit. The modular design of this classifier allows it to be easily extended for classification application with more input dimensions by doing some proper signal-scaling work due to the dynamic range limited by the square-rooter/multiplier circuit. This classifier circuit has been fabricated with a 0.6 μm single-polysilicon double-metal CMOS process. Both simulation results and measurements of the implemented chip are presented to confirm the function of this classifier

Keywords

CMOS analogue integrated circuits; analogue processing circuits; current-mode circuits; pattern classification; pattern matching; pattern recognition equipment; 0.6 micron; Euclidean distance calculator circuit; Si; absoluter circuit; current-mode classifier circuit; dynamic range; modular design; signal-scaling; single-poly double-metal CMOS process; square-rooter/multiplier circuit; squarer/divider circuit; subtracter circuit; template matching application; CMOS process; Circuit simulation; Current mode circuits; Dynamic range; Euclidean distance; Hardware; Prototypes; Semiconductor device measurement; Signal design; Voltage;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.823544

Filename

823544