Chrominance
Also known as ‘C’, this is the component, or pair of components, of an S-Video or Component Video signal which describes color
difference information.
Cold mirror
A mirror that preferentially reects or transmits infra-red light. In a projector, a cold mirror is used to reect the visible component of the lamp
beam into the illumination optics and transmit the unwanted infrared radiation into an absorber.
Color difference
In S-Video or 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).
ColorMax
A method of accurately color-matching projectors together.
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.
Composite video
A signal line that carries luminance, chrominance, synchronization pulses and blanking.
Notes