The video wall controller plays an important role in the LCD video wall. Video wall controllers may be less concerned by everyone.
Video wall controllers are generally only frequently contacted by technical installers.
But just as the host needs a CPU, the LCD video wall also needs a similar CPU, which is a video wall controller. If there is no video wall controller, the LCD video wall is just a pure display screen.
Generally speaking, embedded video wall controllers rarely appear in the scheme, and only technical installers can be contacted.
Next, I will share with you the introduction of advanced technologies to embedded video wall controllers.
Embedded video wall controller are also called "video wall processor ", "LCD video wall processor ", "large screen video wall processor ", "built-in video wall processor ".
It is based on the operation segmentation technology added on the LCD signal drive board.
Its working principle first transmits a complete original picture to the signal operation processor, and the operation processor starts to lock each in the mother picture by means of an ID address encoder.
The positions are arranged in the order of binary BCD code (BCD horizontal coordinate: from left to right, and BCD vertical coordinate: from top to bottom) to start the calculation and cut into multiple sub-pictures, and the processor will directly send the calculated data to the LCD driver board.
The driver board adjusts the color, brightness, contrast and other parameters and transmits it to the LCDIC imager in LVDS mode to form an image.
The embedded video wall uses digital graphics processing technology.
Only one signal is processed at a time, and a powerful CPU core is not required to calculate many signals.
The TV wall provides convenience for some customers who only need a large-screen display.
Up to now, it has an irreplaceable position when configuring an LCD video wall.
However, this type of internal video wall device is only the processing of the display pixels inside the unit, and the result is a composite display image, which cannot solve the signal processing of high-resolution video walls and any size and multi-window signal at any position.
More applications are in a single signal.
Propaganda display screens and simple multi-screen processing applications per unit or adjacent unit video walls are used in high-end multi-window signal control rooms, or combined with a generation of PCI industrial control video wall controllers.
Because the embedded video wall controller is a pure hardware architecture, it has no Windows operating system, no crashes, no black screens, and no screens.
It adopts an original motherboard bus design;
The single unit supports up to 144 high-definition signal inputs and 144 display unit outputs without cascading; supports RGB, high-definition video YpbPr, DVI, composite video and other video signal source inputs, and supports ultra-high-definition DVI signal input (4Kx2K) ; The bus bandwidth can reach 180G;
Adopts original motherboard bus design, supports superimposition of input signal characters, convenient to identify each window on the large screen;
at least supports one-to-many, many-to-one, many-to-many display modes and zoom, roaming, brightness, contrast, saturation , Hue, sharpness, still frame and other display effects control;
Support RS232 serial port and network TCP/IP control, support BSV-PDU processor control software, and fully open control protocol (with cascade control BSV-PDU matrix and other third-party matrix functions);
support RGB and DVI simultaneous output, support output Channel dual backup, support output channel logic secondary programming, support multiple video input modes;
Moreover, the embedded video wall controller control system application has good stability and reliability, the mean time between failures is greater than 50,000 hours, and has a power supply redundancy backup.
Certain protection schemes must be adopted for the key components of the control system to ensure the normal operation of the system ;
The switching time between any display modes of the embedded video wall controller system is not more than 2 seconds, and each scene mode can be switched regularly.
Embedded video wall controllers are mainly used for general display requirements and are currently the most popular LCD video wall configuration devices.
Of course, it can still be replaced by an external image processor, and it cannot support LCD video wall picture-in-picture and window roaming. However, it is necessary to understand the embedded video wall controller before buying an LCD video wall.
iSEMC's LCD video wall products can all have a built-in video wall controller, which supports image roaming, superposition, and stretching; any unit splits to display multiple images, no external matrix is required, and all digital and analog signals are compatible.
