Terminology
UHB
Ultra High Brightness. A projector lamp type.
UHF
Ultra High Frequency. The 300MHz to 3GHz band of radio frequencies used for broadcast television among other things including Wi-Fi.
UHP
Ultra High Pressure. An acronym attributed to projector lamps with an internal pressure of over 3000 lbs per square inch. Usually a mercury arc lamp. Also stands for Ultra High Performance.
Unbalanced
A type of wiring using ground as a shielding method. More susceptible to interference than balanced wiring.
Uniformity
A measurement of the evenness of the brightness of white or a particular color across a display indicated as a percentage. A measurement of 80% means the brightness of an image is 20% less at its dimmest point compared to its brightest.
Unity Gain
A projection screen with a gain rating of one that reflects light with a wide viewing angle back to the viewer. See Gain.
Universal Remote
A remote control capable of running multiple components of multiple brands.
Upconvert
To convert a lower resolution signal to a higher resolution. For example, 480i to 720p.Â
UXGA
UXGA is a display resolution measuring 1600 pixels horizontally and 1200 pixels vertically giving a total display resolution of 1,920,000 individual pixels. UXGA has an aspect ratio of 4:3.
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