PAL— Phase Alternating Line. A European broadcast standard for video and broadcasting, with a video format of 625 lines at 25 frames per second.
Reverse Image— Feature that allows you to flip the image horizontally. When used in a normal forward projection environment, text, graphics, etc, are backwards. Reverse image is used for rear projection.
RGB— Red, Green, Blue— typically used to describe a monitor that requires separate signals for each of the three colors.
SECAM— A French and international broadcast standard for video and broadcasting, closely related to PAL but with a different method of sending color information.
SVGA— Super Video Graphics Array,— 800 x 600 pixels count. SXGA— Super Extended Graphics
WUXGA— Widescreen Ultra Extended Graphics
XGA— Extended Graphics Array— 1024 x 768 pixels count.
Zoom Lens— Lens with a variable focal length that allows the operator to move the view in or out thereby making the image smaller or larger.
Zoom Lens Ratio— Is the ratio between the smallest and largest image that a lens can project from a fixed distance. For example, a 1.4:1 zoom lens ratio means that a 10 foot image without zoom would be a 14 foot image with full zoom.
Glossary
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