Logarithmic Analog to Digital Converter
Original Publication Date: 1978-Feb-01
Included in the Prior Art Database: 2005-Feb-20
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.