Device and method for controlling multi-image compounding in video conference system

A technology for a video conference system and a control device, which is applied to video conference systems, components of TV systems, two-way working systems, etc., to achieve the effects of reducing costs, saving network bandwidth, and reducing code streams

Inactive Publication Date: 2010-02-03
SHANGHAI LINGSHI COMM TECH DEV
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  • Abstract
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Problems solved by technology

[0006] In view of the defect that the conference terminal in the video conferencing system in the prior art sends a video signal to the multipoint control unit with a fixed resolution, so that the multipoint control unit has to decode the vide

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  • Device and method for controlling multi-image compounding in video conference system
  • Device and method for controlling multi-image compounding in video conference system
  • Device and method for controlling multi-image compounding in video conference system

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Embodiment Construction

[0025] The present invention provides a new technical solution for controlling multimedia communication in a video conferencing system. To be precise, it controls the parameters and specifications of the video signal sent by the terminal, so that the terminal can control the video signal before sending the video signal. It is compressed, preferably, at least can be compressed according to the resolution and / or image bit index, and preferably, the control method provided by the present invention directly compresses each video signal to a multi-point control unit (MCU, Multi-point Control Unit) to effectively save bandwidth. Therefore, the present invention minimizes the redundancy of the video signal while ensuring the quality of the video conference, thus effectively reducing the calculation burden of the multipoint control unit on image decoding and image compression.

[0026] specifically, figure 1 A network topology diagram of a video conferencing system for controlling mu...

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Abstract

The invention provides a control method for processing the multimedia communication in a control device of a video conference system, which comprises the step c of sending format control signal commands to a plurality of terminals respectively, wherein the format control signal commands are used for indicating the terminals to send parameter specification indexes of video signals to the control device. The method is characterized in that the parameter specification index contained in the format control signal command sent to the first terminal is different from the parameter specification indexes contained in the format control signal commands sent to other terminals. The invention also provides a controller for processing the multimedia communication in the control device of the video conference system, and an auxiliary control method and a corresponding auxiliary controller for processing the multimedia communication in terminal devices of the video conference system. A video terminal adjusts the video signals according to conditions and compresses the video signals to have the most appropriate resolution ratio so that a multi-point control unit decodes the video signals with theminimum data volume to save the processing capacity of the multi-point control unit and the network bandwidth.

Description

technical field [0001] The present invention relates to a video conference control system, especially a multipoint control unit, in particular to a control method and a corresponding control device for controlling each terminal in the multipoint control unit to send video signals to the multipoint control unit. Background technique [0002] With the development of computer science and technology, multimedia technology and network communication technology have become the focus of computer industry research. The integration of multimedia and network communication technology forms multimedia communication technology, which breaks through the boundaries of traditional fields such as computers, communications, and electronics, and integrates the interactivity of computers, the distribution of communication networks, and the comprehensiveness of multimedia information. Brand-new information services have had a profound impact on the way people live and work. Videoconferencing is ...

Claims

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Application Information

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IPC IPC(8): H04N7/15H04N7/26H04N5/265
Inventor 聂际敏刘建荣
Owner SHANGHAI LINGSHI COMM TECH DEV
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