Other indicators, Inertia, Palette, Problem pixels, Mass dimensions...

Other measures

Inertia

an indicator characterizing the inertia of the appearance of the image on the screen after the video signal is applied. The inertia of the screen is estimated by the minimum time necessary to activate its cell, and in modern CRT and LCD screens is 30-70 μs.

Palette

Flat panel monitors have a limited palette, i.e. characterized by a limited number of colors displayed on the screen. This limitation is due to the fact that the LCD monitor is digital and requires an additional analog-to-digital conversion of the RGB signal of the video adapter before feeding it to the LCD cells. The typical size of the palette of modern LCD monitors is 262,144 or 16,777,216 colors. Obviously, in the first case, True Color mode can not be implemented even when there is enough video memory on the video adapter card. This circumstance should be considered when choosing a monitor and video adapter.

Problem pixels

A distinctive feature of flat-panel monitors is the presence on some LCD screens of problematic, or "jammed" pixels, the brightness of which when changing the image and even when the monitor is turned off remains unchanged. This drawback is due to the imperfection of technology for the production of LCD screens.

Mass dimensions and power consumption

For these characteristics, LCD monitors favorably differ from CRT monitors. LCD monitors have a mass of several kilograms and a thickness of about 20 cm. In many models, it is possible to detach the screen from the stand to hang it on the wall.

There are no high voltage scanners in LCD monitors, so the power they consume does not exceed 35-50 watts in operating mode and 5-8 watts in standby mode.

The overall dimensions and power consumption of CRT monitors depend on the screen size. The monitors with a diagonal of 14 the power consumption must not exceed 60 W.

Anti-glare coating

Monitor screens should have a similar coating designed to absorb the external light flux. To do this, a special chemical substance is applied to the surface of the CRT screen, allowing it to be recognized by a bluish hue.

Radiation and protective screens

The work of the monitor is accompanied by various types of radiation (X-ray, infrared, radio emission, etc.), as well as the presence of an electrostatic field. To prevent them from using absorbing filters in the form of protective screens that are embedded in the monitor.

Power Management

VESA (Association of Video Electronics Standard Association) has developed a special standard for the power management system of the DPMS display (Display Power Management Signaling), which provides the following modes of power consumption:

On - active (normal) work;

Stand-by - turn off video and horizontal scanning; decrease brightness to screen;

Syspend - deactivate horizontal scan, glow and high voltage kinescope (screen extinguished);

Off - disables all monitor circuits.

thematic pictures

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