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Multiple mode real-time multimedia interaction system for long distance teaching

A technology of distance teaching and interactive system, applied in the field of multi-mode real-time multimedia interactive system of distance teaching, can solve the problem of low utilization of network bandwidth resources, the system cannot be deployed on a large scale, and cannot support the transmission of multicast data across network segments, etc. question

Inactive Publication Date: 2004-02-11
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0017] 1. It cannot support the transmission of multicast data across network segments, and the utilization rate of network bandwidth resources is low, which makes the system unable to be deployed on a large scale
[0018] 2. It cannot support handheld mobile devices, and cannot adaptively provide different video data streams for different hardware devices under different network conditions

Method used

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  • Multiple mode real-time multimedia interaction system for long distance teaching
  • Multiple mode real-time multimedia interaction system for long distance teaching
  • Multiple mode real-time multimedia interaction system for long distance teaching

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Embodiment Construction

[0043] In order to understand the present invention more clearly, the technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0044] The remote teaching multi-mode real-time multimedia interactive system of the present invention is a distributed multimedia application system oriented to real-time network teaching. From the physical distribution, it can be divided into three parts: multimedia client, conference service center and multi-point control unit. System structure such as figure 1 as shown, figure 1 Describes the structure of the actual operating system of the present invention and the connection relationship between modules. The conference service center is respectively connected with the multimedia client and the multi-point control unit through network service calls, and the multimedia client and the multi-point control unit are connected through the RTP / RTCP protocol. The conference s...

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Abstract

A remote education multimode real-time multimedia interactive system is composed of a multimedia customer end, conference service center and multipoint control unit. The customer end sends local video, audio and application program shared data to the multipoint control unit, authorized by conference service center, and receives those of other customer terminals from the control unit. The conference service center controls users limit of authority of customer ends and multipoint control unit to be coordinated, the control unit starts video, audio and application program shared data forward module and video conversion code engine according to the information provided by conference service center.

Description

Technical field: [0001] The invention relates to a multi-mode real-time multimedia interactive system for distance teaching, which is oriented to real-time network education / distance education, and involves computer, information transmission and multimedia technology. Background technique: [0002] With the development of information transmission technology, network education / distance education has been generally accepted by people, and the research in this field has also made remarkable achievements. After a novelty search, the applicant retrieved three patents related to the present invention belonging to the field of video conferencing, which are: [0003] 1. (Patent No. US005999525A) Method for video telephony over hybrid network; [0004] 2. (Patent No. US005867494A) System method and article of manufacture within integrated video conference billing in a communication system architecture; [0005] 3. (Patent No. US005867495A) System method and article of manufacture f...

Claims

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Application Information

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IPC IPC(8): H04L12/16H04N7/15H04N7/173
Inventor 申瑞民谢波王加俊
Owner SHANGHAI JIAO TONG UNIV
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