PAL

Phase Alternation by Line. A 625-line video

 

broadcast format used in Western Europe,

 

India, China, Australia, New Zealand, and parts

 

of Africa.

Point

A measurement of drawn or printed objects.

 

One point equals 1/72 inch.

Rear Projection

Projecting the image from behind the screen.

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

A type of color scheme that defines color as

 

percentages of red, green, and blue.

S-Video

A type of video signal used in S-VHS videotape

 

formats. It transmits luminance and color

 

separately.

SECAM

System Electronique pour Couleur Avec

 

Memoire. A 625-line TV system used in

 

France, Eastern Europe, Russia, and parts of

 

Africa.

Sleep mode

A power-saving feature in which the projector’s

 

lamp is turned off when the projector has not

 

been used for 30 minutes. In sleep mode, only a

 

minimum amount of the projector’s circuitry

 

remains on.

156Glossary