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Multiple-picture processing system and method for video conference

A technology for video conferencing and processing systems, applied in the field of multi-picture processing systems for video conferencing, can solve problems such as inability to watch video streams and low-quality video streams, and achieve the effect of low cost and quality assurance

Active Publication Date: 2008-09-03
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, a disadvantage of this method is that if some terminals want to watch a single-screen video of a certain terminal, they can only see a lower-quality video stream
Take the above 4-screen synthesis as an example, because all terminals send video in QCIF format, the terminal cannot watch the video stream of another terminal in CIF format

Method used

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  • Multiple-picture processing system and method for video conference

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Embodiment Construction

[0061] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0062] The present invention aims at the problem that in the existing video conferencing, when the MCU performs video format conversion and multi-picture processing, a large amount of calculation is required, resources are consumed, and a terminal cannot watch the high-quality video picture of another terminal, it provides a A multi-picture processing system and method applied to a video conference.

[0063] The ITU-T H.323 standard defines the method for the terminal to support the transmission of two or more video streams. The MCU transmits multiple video streams by opening multiple video channels, and each video stream has the same status. The ITU-TH.239 standard defines the method for H.320 to support multiple video streams. In addition, H.239 also d...

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Abstract

The invention provides a multi-picture processing system and method for video session. The system comprises a plurality of terminals, one or more multi-point control units. The terminals encode the collected video stream into two-way single picture video stream with different resolution, and then transmit respectively to the multi-point control units; the multi-point control units synthesize the single picture video stream with lower resolution transmitted respectively by the terminals into a multi-picture video stream with higher resolution, and transmit the multi-picture video stream and / or a plurality of terminals with higher resolution to another or a plurality of terminals; the terminals encode and display the video stream after receiving the video stream transmitted by the multi-point control units. The invention can reduce the resource requirement of MCU for performing video format conversion and multi-picture process, simultaneously guarantee the quality of single picture video for one terminal to watch another terminal.

Description

technical field [0001] The invention relates to the field of multimedia communication, in particular to a multi-picture processing system and method applied to video conferencing. Background technique [0002] A video conferencing system is a multimedia communication system that supports voice, video and data communication, and it includes a video conference terminal, MCU (Multipoint Control Unit) and other devices. [0003] The video conferencing systems currently on the market generally conform to the ITU-T H.320 or ITU-T H.323 standards, and there are also systems conforming to the IETF SIP standard. The H.323 standard defines the IP network-based video conferencing system and protocol procedures, the H.320 standard defines the circuit-switched network-based video conferencing system and protocol regulations, and the SIP-based video conferencing standard is still in the experimental stage. [0004] The terminal is the device used by the user (such as a camera). The termi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/15G09G5/14H04N5/262
Inventor 吴永明
Owner ZTE CORP
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