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Logarithmic Analog to Digital Converter

IP.com Disclosure Number: IPCOM000068781D
Original Publication Date: 1978-Feb-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Keillor, RD Lovgren, JL [+details]

Abstract

Video processing and other high-speed applications of analog-to-digital converters (ADCs) frequently require a logarithmic transfer function rather than a linear one. In image processing, for example, the digital output signal should represent the logarithm of the ratio of the light intensity to a background level.