Portable video conference terminal adopting adaptive network coding method and implementation method

Abstract

The invention provides a portable video conference terminal adopting an adaptive network coding method and an implementation method. According to the terminal, an audio and video acquisition module, an audio and video digital processing module, a power module and the like are integrated into a portable terminal box. The terminal is connected with a personal computing device through a USB, a client software of the video conference terminal is run automatically on the personal computing device, and a multi-party video conference can be joined as long as the personal computing device can be connected to the internet. According to the terminal, by perceiving the current communication network state, a coding controller adaptively selects a coding method and dynamically adjusts the video coding strategy according to the real-time network status to enable users at a receiving side to get the best possible real-time video image in the current network state. The terminal operates automatically and is plug-and-play after being connected with the personal computing device, because the underlying driver and the client software of the terminal both reside in the terminal. The terminal has advantages of good portability, simple operation, flexible construction, and good reliability. A low-power consumption design is adopted to realize a long standby time, so that a users can use the terminal whenever and wherever possible.

Description

technical field [0001] The invention relates to a video conferencing terminal and a realization method, in particular to a portable video conferencing terminal and a realization method of adaptive network coding. Background technique [0002] At present, video conferencing systems are mainly divided into software video conferencing and hardware video conferencing. Although the cost of the conference software itself is not high by using a PC-based pure software solution, each conference room must be equipped with a dedicated PC, a separate video and audio acquisition device (such as a USB camera, headset) and related basic software such as an operating system. In addition to installation, maintenance and other aspects of expenses, combined, its cost is relatively high. The pure hardware solution can not only achieve high-quality conference effects, but also complete all functions through highly integrated integrated terminal equipment, without additional hardware and softwar...

AI Technical Summary

Problems solved by technology

[0004] The use of personal computing devices to realize mobile video conferencing has the following problems: 1. The downlink rate of the network is relatively high, and the personal computing device has sufficient soft decoding capability when receiving the downlink video stream, while the uplink rate of the network is relatively small, and the uploading of the video stream is affected. The bottleneck of video conferencing quality; 2. The network environment used by personal computing devices is complex, with the characteristics of limited channel bandwidth and unstable bandwidth; 3. Personal computing devices usually have video capture devices, but the video encoding is software coding , can not meet the requirements of real-time encoding of video conferencing; 4. The encoder of the traditional video encoding standard compresses the video to a fixed bit rate, so that it has a fixed frame rate, resolution and video quality. Only when the bandwidth of the transmission network is high enough , so that it can be decoded and displayed normally at the receiving end

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