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Method and device in video conference, multi-point control device and video conference system

A video conferencing and multi-point control technology, which is applied in the direction of video conferencing systems, two-way working systems, digital video signal modification, etc., can solve problems such as retransmission failure, abnormality, and large load of speaking terminals, so as to ensure service quality and reduce load volume effect

Active Publication Date: 2013-02-20
SUZHOU KEDA TECH +1
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  • Abstract
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  • Claims
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Problems solved by technology

If all audience terminals apply for retransmission from the speaking terminal at this time, it will inevitably lead to excessive load on the speaking terminal, which may lead to retransmission failure or other abnormalities

Method used

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  • Method and device in video conference, multi-point control device and video conference system
  • Method and device in video conference, multi-point control device and video conference system
  • Method and device in video conference, multi-point control device and video conference system

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Embodiment Construction

[0034] Hereinafter, preferred embodiments of the present technology will be explained with reference to the accompanying drawings. The examples given are only for explaining the present invention, not for limiting the scope of the present invention.

[0035] refer to figure 1 , in a video conference, three parties are involved in data exchange, that is, a sender terminal (speaker), a data exchange device (for example, a multipoint control unit MCU), and a receiver terminal. Video conference transmission is usually transmitted through the Internet (such as TCP / IP network) based on UDP protocol.

[0036] In the prior art, if a video conference is initiated, the sender terminal will encapsulate audio, video, and data into UDP packets at its source, and then transmit it to the UDP packet used for video conference data exchange through the TCP / IP network. Multipoint Control Unit MCU. After that, the multipoint control unit MCU only checks whether the UDP packets sent by the send...

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Abstract

The invention relates to a method and a device for detecting and automatically retransmitting a user datagram protocol (UDP) packet in a video conference, a multi-point control device and a video conference system. The method comprises the steps of detecting whether the UDP packet received from a transmitter terminal is normal or not, and confirming that the UDP packet is transmitted or requested to be retransmitted according to a detection result, wherein the UDP packet is transmitted to one or more receiver terminals when the UDP packet is detected to be normal, and the UDP packet is abandoned and a UDP packet retransmitting request is transmitted to the transmitter terminal; and storing a retransmitted UDP packet and retransmitting the retransmitted UDP packet to at least one more receiver terminals after the retransmitted UDP packet from the transmitter terminal is received. The method and the device for detecting and automatically retransmitting the UDP packet in the video conference, the multi-point control device and the video conference system can reduce load amount of the transmitter terminal of the video conference, thereby releasing a plurality of network resources to ensure the service quality of the video conference.

Description

technical field [0001] The invention relates to the field of video conference communication systems, in particular to a method and device for detecting UDP packets in a video conference and automatically retransmitting them, a multipoint control device and a video conference system. Background technique [0002] A video conferencing system refers to two or more individuals or groups in different places, through transmission lines and multimedia equipment, to exchange sound, video and document data, to achieve instant and interactive communication, to achieve the purpose of the system equipment for the meeting. Such as figure 1 As shown, the video conferencing system is based on the H.323 protocol standard. Through the TCP / IP network, multiple different terminals are connected to the data exchange device (for example, a multi-point processing unit MCU) for centralized exchange, forming a video conferencing network. The multi-point processing unit MCU is the key equipment of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/15H04N7/64H04L1/18H04N19/89
Inventor 韩炳荣朱曙万春雷许世林
Owner SUZHOU KEDA TECH
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