Epson EMP 7250 Owners Manual - Page 121
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s s s s ss s s s s s s s s s Glossary Brightness. The balance of light and dark shades in an image. Composite video. A type of video signal that encodes colours, luminance and sychronization information so it can be carried in one signal. Contrast. A measure of the luminance 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. NTSC. A 525-line video broadcast format developed by the National Television Standards Committee. NTSC is widely used in North America, Mexico and Japan. PAL (Phase Alternation by Line). A 625-line video broadcast format used in Western Europe, India, China, Australia, New Zealand and parts of Africa. Resolution. A measure of the amount of detail contained in an image. Resolution can be measured in dots per inch or in pixels. Image sharpness and clarity improve as resolution increases. RGB. Red Green Blue S-Video. A type of video signal which transmits luminance and colour separately. SECAM (Système Electronique pour Couleur Avec Mémoire). A 625-line TV system used in France, Eastern Europe, Russia and parts of Africa. s s s s s s 101