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Virtual Pixel vs True Pixel
Some LED display
manufacturers
use "virtual pixel" technology. They claim that
"virtual pixel" doubles the actual resolution of
the screen, i.e., a screen with a physical (true)
resolution of 320x240 pixels in reality is expressed
as the "virtual" resolution of 640x480.
In an attempt to smooth out
the digital image, each pixel of the image corresponds
not to an actual module pixel but to a light/data
source that is part of the group of pixels that
form the “virtual pixel”. By this mode of pixel
sharing, one pixel contains the “virtual group”* of
pixels image information. (The 2 or 4 pixels that
are combined to form the “virtual” effect). Virtual
pixels are also known as “pixel sharing” or “dynamic
pixels”. Some claim that with “virtual pixels” the
displayed image has twice the resolution as the
“physical” resolution. This is not true because one
module pixel cannot memorize or hold and display the
majority of information from the initial pixel. The
majority of the original information vanishes,
resulting in distortion of important details and other
elements such as colors that are part of the initial
image.
In actual,
physical or true pixel technology, the image is
displayed on a display which each pixel of the
original image corresponds to a pixel on the screen. It
takes the actual color in a pixel as it is balanced
in brightness and contrast and no additional
corrections are required. Optec Media only uses true
pixel technology. |
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VIRTUAL
PIXEL
Uses pixel sharing to achieve
“virtual” pitch.
Attempts to achieve equal resolution
using
1/4 the diodes of a true pixel
display. |
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TRUE PIXEL
Each pixel is distinct, using
individual groups
of LEDs. Display has 4x the diode
density of
a virtual pitch, resulting in 4x
brightness,
greater color depth and better color
accuracy. |
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