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34 9. GLOSSARY
9. GLOSSARY
Clock
With the analog input signal display, the analog signal is converted to a digital signal
by the LCD circuitry. To convert the signal correctly, the LCD monitor needs to
produce the same number clock pulse as the dot clock of the graphics system. When
the clock pulse is not correctly set, some vertical bars of distortion are displayed on
the screen.
Temperature
Color Temperature is a method to measure the white color tone, generally indicated
in degrees Kelvin. At high temperatures the white tone appears somewhat blue, while
at lower temperatures it appears somewhat red. Computer monitors generally give
best performance at high temperature settings.
5000 K: Slightly reddish white.
6500 K: Warm-white tone, similar to white paper or daylight.
9300 K: Slightly bluish white.
DVI (Digital Visual Interface)
A digital flat panel interface. DVI can transmit digital data from the PC directly
without loss with the signal transition method “TMDS”.
There are two kinds of DVI connectors. One is DVI-D connector for digital signal
input only. The other is DVI-I connector for both digital and analog signal inputs.
Gain
Adjusts each color parameter for red, green and blue. The color of the LCD monitor
is displayed through the color filter of the LCD panel. Red, green and blue are the
three primary colors. The colors on the monitor are displayed by combining these
three colors. The color tone can change by adjusting the illumination amount passed
through each color’s filter.
Gamma
Generally, the relationship that the light intensity values of a monitor change
nonlinearly to the input signal level is called “Gamma Characteristic”. On the
monitor, low gamma values display the whitish images and high gamma values
display the high contrast images.
Phase
The phase adjustment decides the sampling timing point for converting the analog
input signal to a digital signal. Adjusting the phase after the clock adjustment will
produce a clear screen.
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