EUHT wireless screen projection system

Abstract

The utility model provides an EUHT wireless screen projection system, which is characterized by comprising a plurality of screen projection transmitting terminals, a screen projection center access device and a plurality of screen projection receiving terminals, and is characterized in that the screen projection transmitting terminals compress HDMI audio and video data of a computer or a mobile phone, and send the data to a communication module through a network port to realize data compression and format conversion; the communication module sends a wireless high-frequency signal, converts the network port data into the wireless high-frequency signal and sends the wireless high-frequency signal to the projection screen center access equipment; the projection screen center access equipment gathers the signals of the projection screen transmitting terminal and distributes the signals to the plurality of projection screen receiving terminals through wireless high-frequency signals; and the communication module of the projection screen receiving terminal converts the wireless high-frequency signal into network port data, and converts the network port data into HDMI audio and video data, thereby realizing data decompression and format conversion.

Description

Technical Field

[0001] The present application relates to the fields of communications and videos, and more specifically to a wireless video projection system. Background Art

[0002] Wireless screen projection is also called wireless screen sharing, flying screen, and screen sharing. Specifically, it is to display the screen of mobile device A (such as mobile phone, tablet, notebook, computer) on another device screen B (tablet, notebook, computer, TV, all-in-one machine, projector) in real time through some technical methods. The output content includes various media information and real-time operation screen. Summary of the invention

[0003] The present application provides an EUHT wireless screen projection system, which is characterized by comprising: multiple screen projection transmitting terminals, a screen projection center access device and multiple screen projection receiving terminals, wherein the screen projection transmitting terminal compresses the HDMI audio and video data of the computer or mobile phone, and sends it to the communication module through the network port to realize data compression and format conversion; the communication module sends a wireless high-frequency signal, converts the network port data into a wireless high-frequency signal and sends it to the screen projection center access device; the screen projection center access device aggregates the signals of the screen projection transmitting terminal, and distributes them to multiple screen projection receiving terminals through wireless high-frequency signals; the communication module of the screen projection receiving terminal converts the wireless high-frequency signal into the network port data. Port data, and convert the network port data into HDMI audio and video data to achieve data decompression and format conversion; wherein, the screen projection center access equipment includes: baseband unit, RF module, data interface module, GPS module, screen projection module, wherein the baseband unit performs wireless data transmission with the wireless LAN terminal through the RF module to provide a wireless network; the baseband unit performs wired data transmission with the core network through the data interface module; the GPS module provides a clock signal for the device and a synchronous clock for the wireless screen projection system to avoid mutual interference between multiple wireless screen projection systems, and the screen projection module decompresses the compressed video transmitted by the wireless communication module into an HDMI signal.

[0004] The above system can realize screen projection between many-to-many terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] In order to better describe and illustrate the embodiments of the present application, reference may be made to one or more drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the invention of the present application, any of the currently described embodiments or preferred methods.

[0006] Figure 1 This is the block diagram of the EUHT wireless projection system.

[0007] Figure 2 This is a schematic diagram of the EUHT wireless projection access center equipment. DETAILED DESCRIPTION

[0008] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0009] Figure 1 This is the block diagram of the EUHT wireless projection system. Figure 2 This is a schematic diagram of the EUHT wireless projection access center device. Figure 1 The EUHT wireless screen projection system includes: EUHT screen projection transmitting terminal, EUHT screen projection central access device and EUHT screen projection receiving terminal. A single central access device can connect 250 terminals to achieve multi-input and multi-output wireless screen projection.

[0010] The present application provides a EUHT projection center access device, including an antenna, a housing and a mainboard. The central access device applies the ultra-high-speed wireless LAN EUHT-5G technology. The antenna adopts an omnidirectional rubber stick antenna and an external 2x2 MIMO antenna, which is installed on the rear of the housing. The housing is made of plastic, and the surface is treated with fine spark patterns. The housing includes an upper housing, a lower housing and an antenna. There are heat dissipation holes on the side and bottom for ventilation and heat dissipation of the mainboard. The mainboard is fixed to the lower housing with screws. A USB debugging interface, an Internet port, a reset button and a power interface are provided at the rear of the housing.

[0011] There are 5 LED indicators, namely PWR, SYS, SYNC, LINK, and USR. PWR indicates the power status, always on when powered on, and off when no power is supplied; SYS indicates the system status, flashing for a few seconds when the system is operating normally or when burning, flashing quickly after burning, always on or off when the system is abnormal; SYNC indicates PPS synchronization, always on when there is synchronization, and off when there is no synchronization; LINK indicates the wired network status, always on when connected to a wired network, flashing when data is transmitted, and off when there is no connection; USR indicates the status of the access device of the user access center, always on when a user is connected to the network, and off when no user is connected to the network.

[0012] An EUHT wireless screen projection system, characterized in that it includes: multiple screen projection transmitting terminals, a screen projection center access device and multiple screen projection receiving terminals, wherein the screen projection transmitting terminal compresses the HDMI audio and video data of a computer or mobile phone, and sends it to a communication module through a network port to achieve data compression and format conversion; the communication module sends a wireless high-frequency signal, converts the network port data into a wireless high-frequency signal and sends it to the screen projection center access device; the screen projection center access device aggregates the signals of the screen projection transmitting terminal, and distributes them to multiple screen projection receiving terminals through wireless high-frequency signals; the communication module of the screen projection receiving terminal converts the wireless high-frequency signal into network port data The data is transmitted through the wireless communication module and the data interface module is used to transmit the data via the wireless LAN terminal. The baseband unit performs wireless data transmission with the core network through the data interface module. The GPS module provides a clock signal for the device and a synchronous clock for the wireless projection system to avoid mutual interference between multiple wireless projection systems. The projection module decompresses the compressed video transmitted by the wireless communication module into an HDMI signal.

[0013] Among them, the baseband unit main control chip supports EUHT 20MHz / 40MHz system, MIMO 2X2, and is started through EMMC. The baseband unit main control chip includes IO interface, I2C, SPI, UART and other convenient expansions, runs the Linux system, is responsible for system monitoring, network event reporting, EUHT event interruption, network management, and cooperates with the RF module main chip NR9808 and the RF front-end LNA, PA, SWITCH to form the EUHT system, which is responsible for uplink and downlink wireless data transmission with the EUHT terminal and provides wireless network.

[0014] Among them, the baseband unit is responsible for processing baseband digital signals; the baseband unit receives signals sent by the RF unit, and the baseband unit and the RF unit are in two-way communication. The baseband unit performs analog-to-digital conversion, source coding, encryption, channel coding, IQ modulation and other digital processing on the received signals and then sends them to the RF unit for processing; or performs IQ demodulation, channel decoding, decryption, source decoding and other digital processing on the signals sent by the RF unit. After frequency modulation, signal amplification, filtering and other processing by the RF unit, the RF signal is transmitted through the antenna port and propagated to a distant place through the antenna unit.

[0015] Among them, the RF module, including the main chip NR9808 and the RF front-end LNA, PA, and SWITCH, constitute the EUHT wireless system. The RF module is used to transmit and receive uplink and downlink wireless data with the EUHT projection terminal to provide reliable wireless network coverage; the RF module main chip NR9808 controls the switching of the sending and receiving paths through control signals to complete data interaction with the EUHT projection terminal. The data interface module is responsible for converting Ethernet to a serial gigabit media independent interface (SGMII interface) and then communicating with the baseband unit. The data module can achieve 10 / 100 / 1000Mbps adaptation.

[0016] Among them, the GPS module receives GPS and Beidou signals through the GPS antenna. After demodulation and decoding, the GPS module obtains positioning information and high-precision clock to provide positioning and high-precision synchronization for the projection system.

[0017] The projection module includes IO interface, I2C, UART, SPI, USB and 100M Ethernet port for easy expansion. It runs LINUX system and is responsible for decompressing the compressed video transmitted by the ultra-high-speed wireless communication module into HDMI signal. In addition, it has infrared function, supports remote control, and can change parameters such as resolution, frame rate, volume, etc.

[0018] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0019] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A EUHT wireless screen projection system, characterized in that: include: Multiple screen projection transmitting terminals, a screen projection center access device and multiple screen projection receiving terminals, wherein the screen projection transmitting terminal compresses the HDMI audio and video data of the computer or mobile phone, and sends it to the communication module through the network port to realize data compression and format conversion; the communication module sends a wireless high-frequency signal, converts the network port data into a wireless high-frequency signal and sends it to the screen projection center access device; the screen projection center access device aggregates the signals of the screen projection transmitting terminal and distributes them to multiple screen projection receiving terminals through wireless high-frequency signals; the communication module of the screen projection receiving terminal converts the wireless high-frequency signal into network port data, and converts the network port data into HDMI audio and video data According to, data decompression and format conversion are realized; wherein, the access equipment of the projection center includes: baseband unit, RF module, data interface module, GPS module, projection module, wherein, the baseband unit performs wireless data transmission with the wireless LAN terminal through the RF module to provide wireless network; the baseband unit performs wired data transmission with the core network through the data interface module; the GPS module provides a clock signal for the equipment and a synchronous clock for the wireless projection system to avoid mutual interference between multiple wireless projection systems; the projection module decompresses the compressed video transmitted by the wireless communication module into an HDMI signal, thereby realizing projection between many-to-many terminals.

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