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Glossary
Brightness. The balance of light and dark shades in an image.
Component video. The recording and transmission of video using
separate red, green, blue and synchronization signals.
Composite video. A type of video signal that encodes picture,
luminance, and synchronization information so it can be carried in one
signal.
Contrast. A measure of the tonal differences between the highlights
and shadows of an image. In a high-contrast image, light areas are very
bright and dark areas are very dark, with relatively few levels of gray
between white and black. Contrast is decreased by adding grays.
NTSC. A 525-line video broadcast format developed by the National
Television Standards Committee. NTSC is widely used in North
America, Mexico, and Japan.
5300.book Page 139 Tuesday, April 13, 1999 4:19 PM