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Digital Projection E-Vision Laser 7500 & 8500 Series
Reference Guide
APPENDIX C: GLOSSARY OF TERMS
Rev B September 2016
Chrominance
Also known as ‘C’, this is the component, or pair of components, of a Component Video signal which describes color difference information.
Color difference
In Component Video signals, the difference between specied colors and the luminance component. Color difference is zero for
monochrome images.
Color gamut
The spectrum of color available to be displayed.
Color temperature
The position along the black body curve on the chromaticity diagram, normally quoted in Kelvin. It takes into account the preset values for
color balance in the service set-up to take up the variations in the prism. The projector allows you to adjust this temperature (i.e. adjust the
picture color temperature).
Component video
A three-wire or four-wire video interface that carries the signal split into its basic RGB components or luminance (brightness) and two-color-
difference signals (YUV) and synchronization signals.
Contrast (electronic control)
The adjustment of the white point of the image without affecting the black point. This increases the intensity range of the displayed image.
Contrast (optical)
The intensity difference between the darkest and lightest areas of the screen.
Cr, Cb
Color difference signals used with ‘Y’ for digital Component Video inputs. They provide information about the signal color. Not to be
confused with Pr, Pb.
Notes
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