教育學習

A video wall is Box PCalso referred to as a data wall。 It comprises a number of display panels tiled together so as to create one large screen。 A data wall is connected to a video-wall processor that functions aspanel PC the brain of the data wall。 The processor enables the user to control the data wall using command and input devices such as a keyboard and mouse。

Data walls are a better alternative to a single large screen because they allowdigital signage users to customize active display areas and are also more cost effective than a single largeFanless pc screen。 Modern video walls with Digital Light Processing (DLP)， Light Emitting Diodes (LED)， and Liquid Crystal Display (LCD) technologies are widely used in control rooms and command centers。

Some common features that are expected from modern video walls are: high performance， compatibility with advanced processors， reliability， and low cost of ownershipsunlight readable。 This articletouch screen monitor elucidates the types of modern video walls seen in command centers and control rooms:

DLP - TheseIndustrial pc comprise rear projection cubes and a video processor/controller。 The projection cubes rely on lamps for displaying images。 As long as the lamp is in working condition， the projection cubes continue to perform。 Lamps used in modern project cubes have aIndustrial monitor life of around 9，000 hours。 Rear projector cubes provide a small footprint - the smaller the screen size the lower the depth， and vice versa。 The DLP technology is also considered to be reasonable as compared to LCD technology。 High resolution andVideo wall thin frames are two of the greatest advantages of DLP video walls。

LED - The LED technology is similar to the DLP technology。 It comprises interlocking rear projection cubes and a video processor。 The light sources are the only difference between the LEDIP66 and DLP technology。 LED cubes are relatively more expensive than their DLP counterpart。 However， LED illumination provides a sharper image and more brightness。 It is also low on maintenance。 For 7/24 applications in command centers and control rooms， the new LED-illuminated DLP technology is becoming a popular choice。

LCD - This display technology makes use of the light-altering ability of liquid crystal toAll in one computer display images。 An LCD comprises flat display panels tiled together and connected to a video processor。 Backlighting is required for LCD video walls， as liquid crystal doesn´t emit light by itself。 An LCD video wall could either be mounted directly on the wall or it could be integrated into a free-standing cabinet。 LCD panels are available in ultra-thin and ultra-light versions reducing space usage。 The only drawback of LCD panels is that they might need to be replaced after a certain period。