Network teaching method and system

Abstract

The invention provides a network teaching method and a system. The system comprises multiple user terminals and a server. The user terminals communicate with the server via the network. The method comprises a data acquisition step, a synchronous display step, a real-time recording step and a broadcasting and replaying step. In the data acquisition step, image data, application data and / or audio data in the network teaching processes are acquired and are used for synchronous display and real-time recording. In the synchronous display step, the acquired data are automatically synchronously displayed or transmitted on student user terminals. In the real-time recording step, the acquired data are separately stored into a database, so users can download the data. In the broadcasting and replaying step, according to the users' requests, the recorded and stored data are transmitted to the users and are combined and redisplay the teaching processes on the user terminals.

Description

technical field [0001] The invention relates to a network-based teaching method and system. The method and system have the functions of synchronous display, real-time recording and on-demand playback of network teaching activities. Background technique [0002] In recent years, with the popularization of the mobile Internet and the rapid development of the network teaching system, the traditional teaching mode has gradually been unable to meet the needs of users for multimedia information teaching methods. In the online teaching process, the real-time synchronous display of the teaching process, the real-time recording of the teaching process, and the fast and effective on-demand playback are more and more concerned by the majority of users. In the prior art, in order to meet the above needs, many solutions have been proposed in terms of synchronous display and recording: [0003] Prior Art 1 ("Chinese Journal of Image and Graphics", Volume 8, No. 9, September 2003, Zhang L...

AI Technical Summary

Problems solved by technology

This is because most of the existing network teaching systems use video streams and manual screenshots by teachers according to their own judgments in the process of transmitting data on the same screen. Concurrent network transmission often has slow speed, unsmooth display, and data freezes, which affect the students' experience in class, and teachers have to consider timely screenshots while lecturing, and sometimes forget to take screenshots and send them to students. Students can't judge whether they have obtained timely screenshots, which affects the teaching effect

[0012] Specifically, the shortcomings include: 1. The recording process is cumbersome, and some require special personnel to record on-site; 2. The video file is huge, and the quality of the courseware needs to be sacrificed for multiple format conversions to reduce the file size; 3. The server storage system requires high requirements; 4. Local recording requires high configuration and performance of the client machine, slow upload speed, and difficult playback; 5. The role of the simulation system consumes high server resources, which cannot meet the large concurrent network recording requirements of the classroom; 6. The performance of streaming media server clusters for on-demand playback High requirements; 7. On-demand playback requires high server bandwidth; 8. On-demand playback requires users to have high bandwidth (the file is too large); 9. When using 2G / 3G / 4G wireless networks to watch, serious freezes, not smooth enough, and costly high traffic

[0013] Furthermore, when a user downloads a file to watch locally, it not only takes up a lot of storage space, but also fails to protect the copyright of the teaching resource provider, resulting in the wanton dissemination of teaching resources, and complex encryption processing will occupy network bandwidth resources and resources. Device processor resources, affecting user experience

[0014] In addition, the existing commercial software in the prior art can record every action of the screen operation and save it as AVI or Microsoft RealNetworks data stream format, but this will occupy a large amount of storage space and the data format it provides is also streaming media

[0015] However, prior art 6 proposes some ideas for recording the teaching process, but it does not give a specific way to achieve it, nor does it disclose the separate acquisition and access of various systematic data, especially without considering the unified generation time of the teaching system. Stamp, the concept of managing various data streams through unified time stamp and unified identifier storage and reading of courseware

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