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Chapter 6 Reference
6-6. Glossary
Clock
The analog input monitor needs to reproduc e a clock of the same frequency as the dot clock of the
graphics system in use, when the an alog input signal is converted to a digital signal for im age display.
This is called clock adjustment. If the clock pulse is not set cor rectly, some vertical bars appear on the
screen.
DisplayPort
VESA provides the digital interface st andard for the digital display device. DisplayPort can tra nsfer the
video signal up to 16 bits for each channel of RGB, and the audio signal too. (This monitor supp orts the
8-bit video signal only.)
DVI (Digital Visual Interface)
DVI is a digital interface standa rd. DVI allows direct transmission of the PC’s digital data without loss.
This adopts the TMDS tra nsmission system and DVI connectors. There are t wo types of DVI connectors.
One is a DVI-D connector for digital signal input only. The other is a DVI-I connect or for both digital and
analog signal inputs.
DVI DMPM (DVI Digital Monitor Power Management)
DVI DMPM is a digital interface power-saving funct ion. The “Monitor ON (operating mode)” and
“Active Off (power-saving mode)” are indispensable for DVI DMPM as the monitor’s power mode.
Gain
This is used to adjust each color paramet er for red, green and blue. An LCD monitor displays the color
by the light passing through the panel color lter. Red, g reen and blue are the three prima ry colors. All
the colors on the screen are displayed by combining t hese three colors. The color tone can be changed by
adjusting the light intensity (volume) passing through ea ch color’s lter.
Gamma
Generally, the monitor brightness varies non linearly with the input signal level, which is called “Gam ma
Characteristic”. A small gamma value pro duces a low-contrast image, while a large gamma value
produces a highcontrast image.