LED display controller: Core of LED display

LED display controller is divided into asynchronous control and synchronous control.

LED display asynchronous control system is also known as LED display offline control system, or control card.

The main control PC will need to display the information and various control commands through serial communication into the LED display screen control card, LED display screen control card contains a microcontroller and memory, screen control card will store the information and then display on the LED display following the command.

LED display synchronous control system is also called online control system, computer and control card through the network cable connection, synchronous control can also be transmitted to the LED display in real-time through the signal of the cloud display card.

Asynchronous control system:

The advantages of Asynchronous control system:

1. Easy to operate

2. Good quality and low price

3. Wide range of applications

4. Partition control displays screen content

Connection way: The computer and the control card are connected via a network cable.

Synchronous control system:

The advantages of a Synchronous control system

1. Unlimited storage of playback content

2. Good display effect

3. Easy content editing

Connect way: R232 to 485 connection, WIFI, 4G, U disk.

The two brands of LED display controllers:

The synchronous control system and Asynchronous control system are separate from the LED display, that’s means they have different manufacturers and brands.

Most of us know about is Colorlight and Novastar, these two brands also on sale in UNIT LED.

So the next part is to comprehend more about the two control systems.

Colorlight led controller:

They set up the company in 2007, it’s more than 15 years focusing on image processing, cloud, video and LED control system solutions. In past years, they rely on independent research and development ability, professional service level to win the trust of global customers.

Their products mainly include super master, professional master, broadcast control serve, receiver, transmitter, accessories and software series.

But today we mainly talk about the control system of  Colorlight.

Asynchronous Professional Master:

Colorlight X100 video splicer is a new professional device developed by colorlight for large splicing displays, I believe you have heard of it. This video splicer combines cropping, scaling, splicing and multi-screen display video processing functions in one, can be used as a professional master LED display for high-resolution small pitch LED video wall.

The features of the X100 video splicer:

  • Pure hardware modular design
  • Support multi-video interface input 2K or 4K signal
  • Support multi-layer display, window arbitrary roaming
  • Support for carrying extra-long oversized screens
  • Support power signal redundancy backup
  • Support pre-monitoring back to the display
  • Multi-platform flexible control, like USB, RS232, LAN
  • Multiple custom scenes can be stored and switched freely

Classic

4U

2U

1U

8U

Input

DVI/HDMI,

3G-SDI

VAG

IP decoding for network port

HDMI2.0+DP1.4

 

Output

HDMI, DVI

 

Optical port + backup output card

Network port output card

The Colorlight Cloud Networking support Asynchronous Control System. Every single box is available in different sizes, you just need to choose the control system according to the series of LED displays and the specific application scenario, and then adjust the control system for your nee.

Synchronized Master Control system

Super master of“Z” series:

Standard version

3D version

HDR 4K low latency

HDR high-dynamic picture compared with the conventional display screen:

HDR-high-dynamic-picturea-and-conventional-display-screen

Comparison chart between HDR high dynamic picture and regular display picture

Colorlight LED control system application please turn to another page.

Novastar led controller:

Novastar found in 2008, Beijing Olympic Games main background screen – Pangu Grand View 3400 square, the first case of NOVA Nebula’s first-generation synchronous control system N100 series.

In 2009, Novastar introduced a full control system and point-by-point calibration service and put it into use in Beijing Zhongguancun.

For Fixed LED displayNovastar provide Guangzhou Asian Games an LED control system and point-by-point calibration, and make a great success.

For Rental LED display, for example, large event site set-up may use the rental screen, because the content is not long-term use, not considered fixed content, so it is necessary to synchronize the control system real-time input content, and according to the requirements of on-site activities to change the broadcast content.

Types

K4S

Kau

K6s

K16

Load capacity

230w

230w

390w

1040w

Width-Height Limit

Widest3840
Highest1920

Widest3840
highest1920

Widest4096
highest4096

Widest16384
highest8192

Input Connector

HDMIx1、DVIb1
vGAx2、CVBSx2
DPx1、SDIx1

HDMbx1、DVtx1
vGAx2.CVBSx2
DPx1

HDMIx2、DVx2
SDIx2.USB×1

HDMI2.0x1
DMx4
DP1.2×1

Wireless Casting

×

×

×

Output connector

Web portx4
DVI LOOPx1
SDI LOOPx1
DVI monitorx2

Web portx4
DVI Monitorx2
web portx4
DVI LOOPx1

Web portx6
DVILOOPx1
DVI monitorx1

Web port×16
10G光纤x4
HDMI monitorx1

Splicing tape load

Layer Number

2

2

3

3

No. of scenes

10

10

10

10

Knob brightness adjustment

On-board USB drive playback

×

×

Control ways

USB、TCP/IP

Central docking

TCP/IP

Based on the NovaLCT, you can send the configuration file to the software.

By the way, NovaLCT is the configuration software of LED display, in the application of LED display, matching the receiver card, monitor card and multifunction card, NovaLCT enables intelligent settings brightness adjustment, power control and hardware monitoring of LED display.

Send the configuration file to software by NovaLCT(1)

What is an HDMI connector?

HDMI means high definition multimedia interface, it is a digital video/audio interface technology, a dedicated digital interface suitable for video transmission, which can transmit audio and video signals simultaneously at a maximum data transfer speed of 18 Gbps, while eliminating the need for digital/analogue or analogue/digital conversion before signal transmission.”

HDMI is one of the most commonly used interfaces in the LED display industry, and with the development of the times, there are emerging products that have not been able to completely replace its market share.

HDMI supports sending audio and video signals simultaneously, simplifying the LED screen’s installation.

Which LED display controller could be better?

What I can say is that it’s up to you, we all know that different scenarios have different choices.

For fixed installation LED display, I would recommend you the asynchronous control system, LED displays under asynchronous control system can be controlled by a computer or can be displayed offline.

For rental LED display, I would recommend you the synchronous control system, which is the so-called online control system. Mainly used for indoor or outdoor full-colour large screen display, because the synchronous control system has the characteristics of real-time, the LED rental screen is more suitable for online control.

Conclusion

This article talks about the two ways of controlling LED display controller: Asynchronous control system, Synchronous control system. And in what scenarios to use it, hope this would help you to know more about the led control system.

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