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InFocus Genesis P130 Manual De Instrucciones página 63

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Glosario de términos
Term
Description
Full On/Off
Contrast is the ratio between white and black. The larger the contrast
Contrast
ratio the greater the ability of a projector or flat panel to show subtle
colour details and tolerate extraneous room light. There are two
methods used:
1) Full On/Off contrast measures the ratio of the light output of an
all white image (full on) and the light output of an all black (full off)
image.
2) ANSI contrast is measured with a pattern of 16 alternating
black and white rectangles. The average light output from the
white rectangles is divided by the average light output of the black
rectangles to determine the ANSI contrast ratio. When comparing
contrast ratio, make sure you are comparing the same type of
contrast. Full On/Off contrast will always be a larger number than
ANSI contrast for a given product.
Gamma
Relationship between input video voltage and output brightness.
Determines how mid-tones appear as eye sensitivity is non-linear
and display devices use different methods to account for this as well
as their own display characteristics.
Gamma
Adjustment to gamma or how gray levels between black and white
Correction
are displayed as the eye is sensitive to these in a logarithmic manner.
For example, good gamma correction allows subtle shadow detail in
a dark image to be easily perceived.
Gauge
Wire thickness measure. The lower the gauge, the larger the wire.
Geometry
Characteristic of a display to accurately show an image without
distorting it. When a display's geometry is good, it represents square
objects as a square, etc. See pincushioning and barrel distortion.
Geometry
Geometry Correction (sometimes referred to as Image Warping)
Correction
is the process of digitally distorting a projected image so that it
precisely matches a specific projection surface or shape. Image
geometry correction compensates for the distortion created by off-
axis projector or screen placement or non-flat screen surface, by
applying a pre-compensating inverse distortion to that image in the
digital domain.
Ghosting
A faint duplicate image, usually offset from primary image. Can be
caused by multipath, which is a delayed, attenuated duplicate signal
bounced off an object to an antenna or other interference.
Gray Scale
A table of shading devoid of colour, progressing from black to white.
The number of discernible gray levels defines the colour resolution of
the display device and is used to evaluate colour acuity and contrast.
®
HDBaseT
HDBaseT
high-definition video & audio, Ethernet, controls, USB and up to
100W of power over a single cable, for up to 100 meters. HDBaseT
eliminates cable clutter without compromising performance and high
quality. The connector is typically a RJ48 8 pin Ethernet jack.
®
is an international standard for the transmission of ultra-
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®
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Este manual también es adecuado para:

Genesis p131Genesis p132