In order to respond to the development of the era, the current mobile phone and ipad have more and more functions of the computer, that is, online office can be realized on the mobile phone and ipad. Since the mobile phone and Ipad can achieve most of the functions of the computer, then using the mobile phone and the ipad to control the LED display is also understandable. Then how do they control the LED display? What is the principle? Next, let everyone know about it.
In fact, one of the most important reasons for the mobile phone and ipad to control the LED display is to connect these devices, then the mobile phone and ipad is not the same as the computer needs network cable to connect it? The answer is no, just use WIFI to connect.
A, mobile phone and ipad control led display several ways
1.1, WIFI wireless control
The system uses the mobile terminal (mobile phone, IPAD) as the control terminal. The remote wireless control screen is implemented for the first time. All the functions of the system can be realized by touch screen control, and zero-second switching is not required. Really abandon the traditional keyboard, mouse, software instead of hardware.
How it works: By installing a wireless router or other wireless device, it bridges with the user's existing wireless network, builds a wireless LAN, and easily integrates the network control card into the wireless network for wireless network control.
Features: no wiring, easy installation and debugging, data transmission speed.
Required equipment: bridge, wireless router (preferably the application on the display screen is to choose exchangeable antenna equipment, so that it can effectively receive wireless signals).
Disadvantages: The communication distance mainly depends on the gain capability of the bridge, the communication distance of the wireless route is relatively short, and the signal of the partition wall is weak or not. Suitable for places with wireless signals over short distances. If the area where your display is located is covered by wireless signals, it is even simpler. You only need to bridge the wireless router connected to the LED display control card in the LED display to your wireless network. Any computer controls the display.
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 the serial port.
1.3, GPRS wireless control
Working principle: After the GPRS module is powered up, it completes the process of dial-up and connects to the data center server. The client accesses the server through the client software and the server forwards the information.
1.4ã€4G Full Netcom Wireless Control
Working principle: basically the same as 3G/GPRS.
Features: 4G Netcom (full support of China Mobile, China Unicom, China Telecom), fast transmission rate, complete real-time control, and sending commands can instantly respond to relevant control.
Second, mobile phone and ipad control several functions of LED display
2.1, image preview, visual operation
With IPAD control screen, any function is imaged, at a glance, will play mobile phones, iPad, it will control the LED screen! Before switching, it is possible to preview the content that is about to be played, to prevent misoperations as much as possible, and to be safe and reliable!
2.2, brightness, volume, a key to any adjustment
According to the actual situation at the scene, customers can remotely control the screen brightness (from the brightest to the blackest screen) and volume at any time on the iPad, which is simple and convenient. The most important thing is that any operation will not affect the use of the current screen, without exiting the current playback!
2.3, support list editing
Before or during use, customers can perform file classification, list sorting, file addition and subtraction, and pre-monitoring at any time. Single loop or list loop can be set when playing video.
2.4, PIP, four-screen, nine-screen one-button switching
Single-screen playback mode and picture-in-picture (up to four sub-screens, sub-screen can be drag and drop size), four-screen, nine-screen, one-button switching, zero seconds delay does not pause; multi-screen mode, double-click any The screen can switch between full screen and window (audio synchronization).
2.5, support PPT, Word and other Office file playback
In addition to the above functions, the wireless control screen system also supports normal playback of Office files (including PPT animation), seamless support for switching between Office files, and seamless switching between video and other (ie, cards that can support larger video files. Play). A file can be placed in multiple windows, independent of each other, so as to preview the next screen to ensure security.
2.6, can edit subtitles synchronously, support synchronous, asynchronous video
During use, the user can edit the letters synchronously, one-click video recording, simultaneous video recording and one video recording, and the recorded files can be exported.
2.7, support for multi-screen synchronization
This system can support a single control screen. By switching, the content of each display can be controlled separately, and multi-screen synchronization can be controlled.
2.8, other functions
Power-off continuous broadcast: Even if the iPad is turned off, the screen body will still play according to the original mode without black screen playback;
External devices: Supports direct connection of cameras, DVs, video players, laptops, etc., and can be synchronized with live preview screens, which can be switched at the touch of a button.
Third, mobile phone and ipad combination control LED display
(using the master control box + LED video processor + WIFI) combination program master control memo can also be replaced with the millet box, the following master control box as an example:
3.1 Mainly implemented functions
Through the mobile phone (Android, Apple) system to control the LED display to play the contents of the phone, the content contains regular pictures, video and so on.
3.2 Required Functions Equipment:
1) Android/Apple system mobile phone
2) Master Control Box
3) Wireless router (Internet connection required)
4) A set of LED display
5) LED video processor - support HDMI or related HDMI conversion cable (main control box is HDMI interface)
3.3 Before the control device needs to complete the connection and play file preparation:
1) The LED display and LED video processor are normally connected and debugged
2) Connect the HDMI output of the master secret box to the LED video processor and make appropriate settings
3) The wireless router starts the wireless network and connects the mobile phone and the master control box to the same WIFI network at the same time
4) The mobile phone installs a corresponding version of the LED host system according to the system and connects to the master 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 operating methods:
1) Via the main control system, the video or photo in the mobile phone or shared computer will be directly sent to the master control box through the slicing mode. After the master control box is received, the customized video and picture files will be directly played.
2) It is also possible to play various videos on the Internet through the master control box
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