How do mobile devices wirelessly control LED screens?

- Nov 28, 2019-

In response to the development of The Times, mobile phones and ipads now have more and more computer functions, that is, mobile phones and ipads can achieve online office. Since mobile phones and ipads can perform most of the functions of a computer, it is not difficult to use them to control the led display. So how do they control the led display screen and how does it work?


In fact, one of the important reasons for controlling the led display of mobile phone and ipad is to connect these devices. So do mobile phone and ipad need network cable to connect like computers? The answer is no, just WIFI.


I. several methods for controlling led display on mobile phone and ipad


1.1 WIFI wireless control


The system takes the mobile terminal (mobile phone, IPAD) as the control terminal, and realizes the remote wireless control screen. All its functions can be controlled by the touch screen. Really abandon the traditional keyboard, mouse, software instead of hardware.


Working principle: by adding wireless router or other wireless devices, bridge with the user's original wireless network, set up the wireless LAN, and conveniently integrate the network control card into the wireless network for wireless network control.


Features: no wiring, easy installation and debugging, fast data transmission.


Required equipment: network bridge, wireless router (the application on the led display screen is to choose the device with changeable antenna, so as to effectively receive the wireless signal).


Disadvantages: the communication distance mainly depends on the gain capacity of the network bridge, the communication distance of the wireless route is short, the partition signal is weak or no signal. It is suitable for short distance places with wireless signal. If the area where your display is located already has wireless signal coverage, it's even easier. Just bridge the wireless router connected to the led control card in the led display screen to your wireless network, and you can control the display from any computer on the Intranet.


1.2 RF wireless control


How it works: one end of the RF module is connected to the control computer, and the other end is connected to the serial port of the control card. After the driver is installed on the computer, a virtual serial port is generated and data is sent through this serial port.


1.3 GPRS wireless control


Working principle: after GPRS module is electrified, it completes the process of dial-up Internet access and connects to the data center server. The client accesses the server through the client software, and the server forwards the information.


1.4 4G full network wireless control


Working principle: basically the same as 3G/GPRS.


Features: 4G full netcom (supported by China mobile, China unicom and China telecom), fast transmission rate, fully realized real-time control, and able to instantly respond to relevant control when sending instructions.


Ii. Several functions of mobile phone and ipad controlling led display screen


2.1 graphical preview and visualization operation


With IPAD control led display screen, any functions are graphical, at a glance, will play mobile phone, IPAD, will control the LED display screen! Before the switch, it is possible to preview the content to be played, to prevent misoperation to the maximum extent, safe and reliable!


2.2 brightness and volume can be adjusted arbitrarily with one key


Depending on the actual situation on site, customers can remotely control the brightness (from brightest to black) and volume of the screen with one click on the iPad at any time, which is simple and convenient. Importantly, any action will not affect the use of the current screen body, do not exit the current play!


2.3 list editing is supported


Before or during use, customers can categorize, sort lists, increase or decrease files and pre-monitor the program at any time. Single loop or list loop can be set when playing video.


2.4. One-key switch for picture-in-picture, four-screen and nine-screen


Single-screen playback mode and picture-in-picture (up to four sub-screen, sub-screen drag-and-drop size), four-screen, nine-screen, you can switch with one key, zero-second delay can not stick; In multi-screen mode, double-click any screen to switch to full screen and window (audio synchronization).


2.5. Support PPT, Word and other Office files to play


In addition to the above functions, the wireless control screen system also supports normal playing of Office files (including PPT animation), seamless switching between Office files, and seamless switching with video (that is, it can support non-catton playing of large video files). A file can be placed in multiple Windows, independent of each other, thus previewing a screen, to ensure security.


2.6. Subtitles can be edited synchronously, and synchronous and asynchronous video recording is supported


In the process of use, the user can edit the letter synchronously, one key can be recorded video recording, support synchronous video recording and a video recording, recorded files can be exported.


2.7. Support multi-screen synchronization


This system can support a multi - screen control. Through switching, the display content of each screen can be controlled separately, and multi-screen synchronous control can be achieved.


2.8 other functions


Continue playing after power failure: even if the iPad is turned off, the screen will still play in the original mode without black screen.


External equipment: it supports direct connection of camera, DV, DVD player, laptop and other equipment signals, and can synchronously monitor live images, which can be switched with one key.


3. Mobile phone and ipad combined control led display


(main control box +LED video processor +WIFI) combination scheme main control box can also be replaced by millet box. The following main control box is an example:


3.1 main realized functions


Through the mobile phone (android, apple) system to control the led display screen to play the content of the phone, including regular pictures, videos and so on.


3.2 required functional equipment:


1) one android/ios phone

2) one master control box

3) one wireless router (need to connect to the Internet)

4) one set of LED display screen

5) LED video processor - supports HDMI or related HDMI converter (main control box is HDMI interface)


3.3 equipment connection and preparation for playing files before control:


1) first, connect the led display screen and led video processor normally and finish debugging

2) connect the HDMI output of the main control box to the LED video processor and set the corresponding Settings

3) the wireless router opens the wireless network and connects the phone and the main control box to the same WIFI network

4) according to the system, the phone is installed with a corresponding version of LED main control system, and connected to the main control box through Settings


And backup the content of the LED stage screen to the phone in advance


3.4 specific operation methods:


1) through the master control system, the video or photo in the mobile phone or Shared computer can be directly sent to the master control box by up stroke, and the master control box will directly play the video and picture files you have selected after receiving

2) it can also play various videos in the Internet through the main control box