A/D signal conversion in current domain for a visual-to-thermal converter

Author

Carr, L.S. ; Syrzycki, M.J.

Author_Institution

Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC, Canada

fYear

1993

fDate

14-17 Sep 1993

Firstpage

688

Abstract

A prototype thermal scene simulator is being developed to convert a visual scene to thermal image. A single visual-to-thermal converter cell combines a photodetector and a thermal pixel along with a local A/D operating in the current domain and control circuitry. Because thousands of these cells are required to convert an image with proper resolution, this application requires a small, low-powered custom A/D converter design, able to work within a very broad range of visual scene light intensity. Two designs of signal converters operating in the current domain are described and compared for the final application

Keywords

CMOS integrated circuits; analogue-digital conversion; image convertors; image sensors; infrared imaging; photodetectors; simulation; A/D convertor; A/D signal conversion; current domain; low-powered custom ADC design; photodetector; prototype thermal scene simulator; thermal image; thermal pixel; visual-to-thermal converter; Circuit simulation; Digital control; Driver circuits; High speed optical techniques; Image converters; Layout; Optical sensors; Photodetectors; Phototransistors; Thermal engineering;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1993. Canadian Conference on

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-2416-1

Type

conf

DOI

10.1109/CCECE.1993.332389

Filename

332389