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Industry Terms
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Industry Terms
A B C D E F G H I J K L M N
O P Q R S T U V W X Y Z
PAL
Palette
Parallel
Passive Matrix LCD
Peripheral
Pixel
Polysilicon LCD
Power Lens
PAL [top]
Phase Alternate Line. The PAL television system used extensively in Great Britain and western Europe. It is incompatible with other television standards.
Palette [top]
The number of colors available for use in creating an image.
Parallel [top]
A method of transmitting several bits of data simultaneously through a communications channel.
Passive Matrix LCD [top]
The original LCDs, these are controlled by a single processing system, for the whole screen, unlike active and poly-silicate panels, which have discrete circuits for each "pixel". This results in a panel with less color dynamics and lower contrast ratio. A major drawback of passive matrix LCD is they are very slow. With a passive LCD laptop computer, any moving screen object, such as the cursor, may disappear until you stop moving it. Very few projectors still use a passive matrix display.
Peripheral [top]
External devices controlled by the computer, e.g. printer, keyboard, mouse.
Pixel [top]
Short for picture element. The smallest element of a raster display represented as a point with specified color and intensity.
Polysilicon LCD [top]
The latest LCD technology for LCD projectors. Polysilicon is usually 3 separate layers of LCDs, for red, green and blue light. This results in increased color dynamics, with high contrast ratios around 200:1. Poly silicon is ideal for multimedia applications.
Power Lens
[top]
Typically a motorized lens that allows adjustment of focus and zoom from a remote control.
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