Method and apparatus for evaluating color transparencies and the like
Abstract
Abstract EQUIPMENT FOR EVALUATING COLOR TRANSPARENCIES UTILIZING A COLOR KINESCOPE WHOSE INTENSITY AND COLOR MIX ARE READILY ADJUSTABLE. THE TRANSPARENCY BEING EVALUATED IS COMPARED AGAINST "STANDARD" TRANSPARENCIES, WHEREBY THE GRID BIAS VOLTAGES OF THE THREE-GUN KINESCOPE ARE ADJUSTED TO ACHIEVE FAVORABLE COMPARISON BETWEEN THE TRANSPARENCY BEING EVALUATED AND THE "STANDARD." THE VALUES OF THE THREE KINESCOPE BEAM CURRENT NECESSARY TO OBTAIN THE PROPER COLOR BALANCE AND LUMINANCE ARE EMPLOYED IN MATHEMATICAL RELATIONSHIPS TO DETERMINE THE PREPARATION OF COLOR SEPARATIONS (FOR EXAMPLE) FROM THE TRANSPARENCY BEING EVALUATED, WHICH CALCULATIONS MAY BE PERFORMED BY COMPUTER MEANS, WHICH MAY EITHER BE ANALOG OR DIGITAL IN NATURE.
Inventors
- 👤 Nathaniel I Korman
Bibliographic Details
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