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Chapter 5 Reference
5-4 Glossary
Clock
The analog input monitor needs to reproduce a clock of the same frequency as the dot clock of the graphics system in
use, when the analog input signal is converted to a digital signal for image display.
This is called clock adjustment. If the clock pulse is not set correctly, some vertical bars appear on the screen.
DVI (Digital Visual Interface)
DVI is a digital interface standard. DVI allows direct transmission of the PC’s digital data without loss.
This adopts the TMDS transmission system and DVI connectors. There are two types of DVI connectors. One is
a DVI-D connector for digital signal input only. The other is a DVI-I connector for both digital and analog signal
inputs.
DVI DMPM (DVI Digital Monitor Power Management)
DVI DMPM is a digital interface power-saving function. 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 parameter for red, green and blue. An LCD monitor displays the color by the light
passing through the panel color filter. Red, green and blue are the three primary colors. All the colors on the screen
are displayed by combining these three colors. The color tone can be changed by adjusting the light intensity (volume)
passing through each color’s filter.
Gamma
Generally, the monitor brightness varies nonlinearly with the input signal level, which is called “Gamma Characteristic”.
A small gamma value produces a low-contrast image, while a large gamma value produces a high-contrast image.
Phase
Phase means the sampling timing to convert the analog input signal to a digital signal. Phase adjustment is made to
adjust the timing. It is recommended that phase adjustment be made after the clock is adjusted correctly.
Range Adjustment
Range adjustment controls the signal output levels to display every color gradation. It is recommended that range
adjustment be made before color adjustment.
Resolution
The LCD panel consists of numerous pixels of specified size, which are illuminated to form images. The display
panel of this monitor consists of 1280 horizontal pixels and 1024 vertical pixels. At a resolution of 1280 x 1024,
images are displayed as a full screen (1:1).
sRGB (Standard RGB)
International standard for “color reproduction and color space” among peripheral devices (such as monitors, printers,
digital cameras, scanners). sRGB allows Internet users to closely match colors as a simple color matching means for
the Internet use.
Temperature
Color temperature is a method to measure the white color tone, generally indicated in degrees Kelvin. The screen
becomes reddish at a low temperature, and bluish at a high temperature, like the flame temperature.
5000K: Slightly reddish white
6500K: Warm white like paper white
9300K: Slightly bluish white
TMDS (Transition Minimized Differential Signaling)
A signal transmission system for digital interface.
VESA DPMS (Video Electronics Standards Association - Display Power Management Signaling)
VESA provides the standardization of signals from PC (graphics board) for power saving of PC monitors. DPMS
defines the signal status between PC and monitor.
