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With the development of smart home system, intelligent conference room and intelligent teaching system, the wireless transmission technology in audio and video LAN has always played an important role in these intelligent systems, and has become a hot topic for people’s research and development. In China, the wireless transmission of audio in LAN has been relatively mature, and presents a variety of solutions. There are various forms of hardware: such as point-to-point wireless microphone for teaching, gateway of smart home based on Wi Fi as wireless audio server and other common forms. In addition, there are various media options for audio transmission: Wi Fi, Bluetooth, 2.4G, and even ZigBee.
Compared with wireless audio, the development of wireless video is relatively slow, and the reason is obvious: the development difficulty and cost of wireless video are relatively large. Nevertheless, the demand for wireless video has still become a hot spot in the market. For example, the camera wireless monitoring system dedicated to security, the UAV wireless transmission system dedicated to shooting, the wireless video projection application dedicated to teaching or conference, the wireless transmission application of large screen of advertising machine, the wireless multimedia center in smart home, the wireless transmission application of high radiation and high-definition imaging in high-end medical devices, etc.
At present, most of the wireless video transmission systems are mainly the wireless monitoring system of the camera, and its video source is the camera, which can not meet the pure video to video wireless transmission. Because the wireless monitoring system of the camera is relatively speaking, it omits the part of video acquisition and processing, and replaces the acquisition and coding processing of the camera itself. Therefore, the development of the wireless monitoring system of the camera is less difficult and widely exists in the market. Pure video to video wireless transmission is rare in China, so it can be seen that it is difficult to develop. In order to solve this problem, the “method for realizing wireless transmission of HD video” of the invention mainly refers to designing a pure wireless transmission system from video source end to video output end.
According to the existing technology, the traditional video transmission can not reach the unified standard of “wireless” and “HD”, that is, it can not realize the transmission of HD video through wireless means such as Wi Fi, or the wireless video transmission can not reach the HD standard of 720p and above. In addition, high-definition video transmission often has the problems of delay, jamming and low transmission image quality.