Blanking (video signal)
The section of the video signal where there is no active video data.
Not to be confused with blanking (projection).
Brightness (electronic control)
A control which adds a xed intensity value to every pixel in the display, moving the entire range of displayed intensities up or down, and is
used to set the black point in the image (see Contrast). In S-Video and Component Video signals, brightness is the same as luminance.
Brightness (optical)
Describes how ‘bright’ an image that is projected onto a screen appears to an observer.
C
See Chrominance.
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.
Notes
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