Open AccessA Low Power Analog CMOS Vision Chip for Edge Detection Using Electronic Switches
Author(s) -
Kim JungHwan,
Kong JaeSung,
Suh SungHo,
Lee Minho,
Shin JangKyoo,
Park Hong Bae,
Choi Chang Auck
Publication year - 2005
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.05.0905.0008
Subject(s) - cmos , chip , electronic circuit , electrical engineering , enhanced data rates for gsm evolution , analogue switch , electronic engineering , engineering , computer science , telecommunications , voltage
An analog CMOS vision chip for edge detection with power consumption below 20 mW was designed by adopting electronic switches. An electronic switch separates the edge detection circuit into two parts: one is a logarithmic compression photocircuit, and the other is a signal processing circuit for edge detection. The electronic switch controls the connection between the two circuits. When the electronic switch is off, it can intercept the current flow through the signal processing circuit and restrict the magnitude of the current flow below several hundred nA. The estimated power consumption of the chip, with 128 × 128 pixels, was below 20 mW. The vision chip was designed using 0.25 µm 1‐poly 5‐metal standard full custom CMOS process technology.