Intensity Modulation Effects in Multiparameter Displays

A number of photographs of simulated multiparameter displays are presented, showing the visual effects of several different matrix spot intensity modulation techniques. It is seen that brightening the matrix spots in direct proportion to contents, or height contributes to the 3-dimensional illusion of isometric displays. It is also seen that brightening the matrix spots in approximate logarithmic, rather than linear proportion to contents provides improved highlighting of small picture detail, and prevents "washout" of picture under high ambient light viewing conditions. Conclusions are also drawn concerning the necessary CRT spot resolution for acceptable data picture quality, and minimum frame rate for flicker-free viewing.