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Intensity Control Circuit for Segmented Display Elements

IP.com Disclosure Number: IPCOM000052960D
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Ossowski, R [+details]

Abstract

This article describes a simple logic circuit for controlling the display intensity of optical display elements such as LED (light-emitting diode) matrices or multi-segment LED characters. An N-bit shift register can be loaded under program control to establish a variable width pulse which, when gated to the display element driver gates, can be used to vary the intensity.