In response to the development of the times, mobile phones and ipads have more and more computer functions, that is, online office can be realized on mobile phones and ipads. Since the mobile phone and Ipad can realize most of the functions of the computer, it is not a problem to use the mobile phone and ipad to control the LED display. Then how do they control the LED display and what is the principle? Let the LED display manufacturers explain to you .
How does the mobile device control the led display?
In fact, one of the most important reasons for mobile phones and ipads to control LED displays is to connect these devices, so do mobile phones and ipads need network cables to connect like computers? The answer is no, just use WIFI to connect.
1. Several ways to control the led display screen with 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 for the first time, and all its functions can be realized by touch screen control, and the switching in zero seconds does not freeze. Really abandon the traditional keyboard, mouse, software instead of hardware.
Working principle: By adding a wireless router or other wireless equipment, it bridges with the user’s original wireless network to build a wireless local area network, and easily integrates the network control card into the wireless network for wireless network control.
Features: no wiring, easy installation and debugging, fast data transmission.
Required equipment: bridge, wireless router (it is best to choose a device with a replaceable antenna for the application on the display screen, so that the wireless signal can be received effectively).
Disadvantages: The communication distance mainly depends on the gain capability of the bridge. The communication distance of the wireless router is relatively short, and the signal of the partition wall is relatively weak or there is no signal. It is suitable for places with short-distance wireless signals. If the area where your display screen is located already has wireless signal coverage, it is even simpler, just bridge the wireless router connected to the LED display control card in the led display screen to your wireless network, and you can use the intranet Control the display from any computer.
1.2. RF wireless control
Working principle: 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 the GPRS module is powered on, it completes the process of dialing up to access the Internet, and connects to the server in the data center. The customer accesses the server through the client software, and the server forwards the information.
1.4, 4G full Netcom wireless control
Working principle: basically the same as 3G/GPRS.
Features: 4G full Netcom (supported by all series of China Mobile, China Unicom, and China Telecom), fast transmission rate, fully realized real-time control, and can instantly respond to related controls when sending commands.
2. Several functions of the mobile phone and ipad to control the led display
2.1. Image preview, visual operation
Use the IPAD to control the screen, and any function can be visualized at a glance. If you can play with your mobile phone or iPad, you can control the large LED screen! Before switching, you can preview the content to be played to prevent misoperation to the greatest extent, safe and reliable!
2.2. Brightness and volume can be adjusted arbitrarily with one key
According to the actual situation on site, customers can remotely control the brightness of the screen (from the brightest to black) and the volume on the iPad at any time, which is simple and convenient. The most important thing is that any operation will not affect the use of the current screen, and there is no need to exit the current playback!
2.3, support list editing
Before or during use, customers can perform file classification, list sorting, file addition and deletion, and pre-monitoring of the broadcast programs at any time. Single loop or list loop can be set when playing video.
2.4. One-key switch between picture-in-picture, four-screen and nine-screen
Single-screen playback mode and picture-in-picture (supports up to four split screens, which can be dragged and enlarged), four-screen, nine-screen, one-click switching, zero-second delay without lag; in multi-screen mode, double-click any The screen can be switched between full screen and windowed (audio sync).
2.5, support PPT, Word and other Office files to play
The wireless control screen system supports normal playback of Office files (including PPT animations), seamless switching between Office files, and seamless switching with videos (that is, it can support large video files without freezing). A file can be placed in multiple windows, independent of each other, so as to preview the next screen and ensure safety.
2.6, can edit subtitles synchronously, support synchronous and asynchronous recording
During use, users can edit letters synchronously, record and record with one click, support synchronous recording and one recording, and the recorded files can be exported.
2.7, support multi-screen synchronization
This system can support multiple screens controlled by one device. By switching, the playback content of each display screen can be controlled separately, and multiple screens can be controlled synchronously.
2.8. Other functions
Resume playback after power failure: Even if the iPad is turned off, the screen will still play in the original mode without black screen;
External equipment: support direct signal connection of cameras, DV, DVD players, laptops and other equipment, and can simultaneously preview the live broadcast screen, and switch with one key.
3. Mobile phone and ipad combination scheme to control the led display
(Using the main control secret box + LED video processor + WIFI) The main control secret box of the combined scheme can also be replaced by a millet box. The following main control secret box is an example:
3.1 Main functions realized
Use the mobile phone (Android, Apple) system to control the led wall screen panels display to play the content in the mobile phone, the content includes regular pictures, videos, etc.
3.2 Required functional equipment:
1) One Android/iOS mobile phone;
2) One master control secret box;
3) One wireless router (need to connect to the Internet);
4) A set of led display;
5) LED video processor [support HDMI or related HDMI conversion cable (the main control box is HDMI interface)];
3.3 Connections that need to be completed by the device before control and preparations for playing files:
1) First connect the LED display and LED video processor normally and complete the debugging;
2) Connect the HDMI output of the main control box to the LED video processor and make corresponding settings;
3) The wireless router turns on the wireless network, and connects the mobile phone and the main control box to the same WIFI network at the same time;
4) The mobile phone installs a corresponding version of the LED main control system according to the system, and connects to the main control secret box through settings,
And back up the content that needs to be played on the LED stage screen to the mobile phone in advance;
3.4 Specific operation methods:
1) Use the main control system to directly send the video or photos in the mobile phone or the shared computer to the main control secret box by swiping up, and the main control secret box will directly play your customized video and picture files after receiving it;
2) You can also play various videos on the Internet through the master control box
