Abstract
Increased use of computer output for decision-making has led to the need for effective computer-generated displays of symbols and lines in various formats. Two key functions involved in display generation are digital-to-image conversion, and image storage for projection. Symbol generation can be performed by use of logical and electron beam devices to create dot patterns, intensity modulated scans, mixtures of waveforms or shaped electron beams. Lines are generated as dots, line segments, or vectors. Large, bright displays are obtained by optically projecting images using CRT, photographic, electrostatic, oil film, or thermoplastic techniques. Many new developments show promise for application in computer-generated displays.
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