Print

Videowalls in general

Smartphone_Icon    Fon: +49 (2937) 969 80 - 100 Weltkugel_Symbol   Web: www.VideoWallShop.de Email an Service   Mail: videowall@novotech.de

 

LED_-_Header_-_01

 

   

At this point we would like to try to answer a few general questions about videowalls.

 

In general, a distinction is made between different types of video walls. One way to build a video wall is to assemble multiple screens. Another is to use an LED video wall consisting of several individual panels mit LEDs . Both technologies have pros and cons, and you have to choose one of them depending on the location and the type of operation

 

ENG_-_Videowand_Allgemein ENG_-_Wand_selbst_bauen ENG_-_Service_Reparatur ENG_-_Recht
   

Screen Walls

Screen walls have the advantage that they usually have a very high resolution. Since individual screens normally work with Full HD (1.920 x 1.080) resolution, such a wall usually has a higher resolution. (In individual cases, this depends on the type of control) Disadvantage of this technique is the weak luminosity compared to the LED technology and the fact that normal screens are not waterproof, and thus unsuitable for outdoor use. The webs between the displays are often perceived as disturbing

With the screen walls one can theoretically use "normal" TV sets and then control them with a special graphic cards. However, one has the problem that the frames are very wide and you have to out of the picture with the graphics card out of the picture. In addition, commercially available televisions are not designed for continuous operation. For most locations, the brightness of about 300cd / m² is not enough. So this is rather a cheap alternative for the hobby user. It is better, you use special videowall screensThese often have a very thin frame (seamless) and are designed for continuous operation. The control for a video wall is almost always integrated in these devices, so that you can loop the video signal from one screen to the next and only on each device, the position within the video wall adjusts.

With such a wall you can work with a normal video signal (HDMI, DVI, DP DisplayPort, VGA or Composite) and need no special graphic cards and they have a much simpler (Daisy Chain) cabling. In addition, these screens are usually designed for 24/7 operation and much brighter than regular TV sets.

 

LED Videowalls

For LED walls, individual LED panels are assembled into a video wall of almost any size. The benefits of LED walls include extreme flexibility in size and format, as well as higher brightness and the ability to use these products outdoors.

There are also screens for outdoor use, but they are much more expensive.

For LED walls, a distinction is made between indoor and outdoor devices, between panels for fixed or rental use and above all in the resolution, the pixel pitch. Modern products have resolutions of 10mm or less. For indoor use, the best products we currently offer are below 2mm pixel pitch. So less than 2mm distance from one pixel to the next. This is still more than with screens, but an LED video wall is designed for greater viewing distances and captivates with its brightness and contrast.

As a rough guideline, you should plan at least one meter viewing distance per millimeter pixel pitch.

On the one hand, outdoor panels are, as one suspects, weather-resistant. But they are also much brighter than the indoor systeme, because you can hardly recognize them in direct sunlight otherwise. Panels for rental use (rental) are usually made of aluminum and thus much lighter. Modern products are fanless and have special closures that allow a very quick and easy installation. These are mostly used for events where it's about the video wall as quickly as possible to build and remove.

 

LED Wall Control

To control an LED video wall either a special PC plug-in card and the appropriate software, or a controller box is required. The individual LED panels are connected in the "daisy-chain" process.

Normally, an LED panel can not process a direct video signal, but is controlled by the controller software and hardware with pure binary data. The input signal is applied to the input of the PC card or controller box and transmitted to the wall via a single data cable. Each LED panel has its own receive controller. The wall is then configured via the software. Using special additional hardware, for example, the brightness of the wall can be automatically adjusted to the ambient brightness so as not to bother anyone and to save electricity.

 

LED Technology

Nowadays the LEDs on the panels are changing from DIP technology (3 individual LEDs [red, green, blue] per pixel) to SMD technology (1 LED per dot). The SMD technology already delivers brightness values ​​of over 6.000 cd/m² and can be integrated much higher (small distances between the pixels). The viewing angles are also better with the SMD LEDs.

DIP technology is most often used for extremely bright, over 7.000 cd/m², or extremely sturdy walls (such as stadium tape advertising), but here, too, the SMD modules are gaining more and more ground.

     

If you want to know more and see our product live, you are welcome to our showroom in Meschede, Germany.
 

>> But please make an appointment in advance. <<


We have always set up some LED and video screens and are happy about anyone interested in watching our products live.