Title :
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
fDate :
2/1/2000 12:00:00 AM
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;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
