Information transmission method for remote teaching system and remote teaching system

Abstract

The invention relates to an information transmission method for a remote teaching system and a remote teaching system. A plurality of channels of remote videos can be viewed on one terminal. The information transmission method comprises the steps of respectively copying video data to child windows, corresponding to terminals, in a current video template according to the video channel numbers of the terminals, coding the video data of the whole current video template and transmitting the coded video data to the terminals. The video data sent by the terminals is received, and whether the resolution of each channel of video data fits the video size of the corresponding child window in the current video template is judged. By the adoption of the information transmission method and the remote teaching system of the invention, the video data sent by the terminals can be displayed in the video template, the network bandwidth can be effectively and fully utilized, and a plurality of channels of remote videos can be viewed on one terminal.

Description

technical field [0001] The invention relates to a data transmission method of a distance teaching system and the distance teaching system. Background technique [0002] With the development of video coding and network technology, the application of network video is becoming more and more extensive. One of the application methods of network video is the distance teaching system. When in use, each user terminal sends the video data collected locally to the server. After receiving it, the server forwards it to all terminals in the distance teaching system or other designated terminals, and these terminals display it after receiving it. Due to the powerful performance of virtual reality provided by high-definition video, high-definition video has gradually become the mainstream of today's distance learning systems, and most of its video resolution supports 720P / 1080P. At the same time, the requirements for network bandwidth are also higher. Using the communication capacity of t...

AI Technical Summary

Problems solved by technology

Due to the powerful performance of virtual reality provided by high-definition video, high-definition video has gradually become the mainstream of today's distance learning systems, and most of its video resolution supports 720P / 1080P. At the same time, the requirements for network bandwidth are also higher. Using the communication capacity of the existing distance learning system, based on the current general bandwidth of domestic public networks, it is assumed that each terminal has an uplink bandwidth of 2Mb / S and Downlink bandwidth, then, using the H264 encoding method to achieve 720P 30fpS encoding transmission, each terminal can only watch one remote video, and it will be very difficult to watch more than two channels of video, and it is impossible to realize multiple channel Remote video viewing

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