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Media control server cascade system as well as method and device for controlling multimedia code streams

A media control and cascading system technology, applied in the field of communication, can solve the problems that the implementation of multimedia code stream application cannot be realized, etc.

Active Publication Date: 2013-06-12
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a multi-point control unit cascade system and its method and device for controlling multimedia code streams, so as to solve various application implementation problems caused by the fact that multimedia code streams can only be transmitted one way at the same time in the prior art. unachievable problem

Method used

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  • Media control server cascade system as well as method and device for controlling multimedia code streams
  • Media control server cascade system as well as method and device for controlling multimedia code streams
  • Media control server cascade system as well as method and device for controlling multimedia code streams

Examples

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example 1

[0059] Figure 5 The cascaded system shown includes multiple MCUs, namely MCU51, MCU52 and MCU53. There are multiple conference sites mounted under MCU51, MCU52 and MCU53, among which the conference sites mounted under MCU51 are T511~T51n, which are mounted under MCU52 The conference sites are T521~T52n, and the conference sites mounted under MCU53 are T531~T53n.

[0060] In this embodiment, the cascading channels between MCU51 and MCU52, and between MCU52 and MCU53 are used to transmit audio code streams, and various MCUs process audio code streams differently, as follows:

[0061] The working process of MCU51 is as follows: receive the audio code streams of the venues T511~T51n, and decode them, select the audio code streams that meet the predetermined conditions from the decoded audio code streams, and pass multiple cascade connections between MCU51 and MCU52 The channel is sent to MCU52.

[0062] The working process of MCU52 is: receive the audio code stream of the venue...

example 2

[0070] In the cascaded system, the video wall on an MCU has multiple display screens, corresponding to the venues mounted under the MCU cascaded with the MCU, such as Image 6 The cascaded system shown includes MCU_A, MCU_B, MCU_C and MCU_D, wherein MCU_A is connected to a multi-screen video wall, and the multi-screen video wall has 4 display sub-pictures (picture 1, picture 2, picture 3 and picture 4), Each sub-screen corresponds to the cascaded venues T1, T2, T3, and T4 respectively. T1 is mounted under MCU_B, T2 is mounted under MCU_C, and T3 and T4 are mounted under MCU_D.

[0071] Among them, each MCU establishes a cascading channel with the upper-level MCU or the lower-level MCU, one cascading channel (channel ab) is established between MCU_A and MCU_B, and three cascading channels (channel ac1, ac2) are established between MCU_A and MCU_C and ac3), there are 2 cascaded channels (channels cd1 and cd2) established between MCU_C and MCU_D.

[0072] Specifically, the worki...

example 3

[0088] The multi-cascade channel structure of the MCU cascade system provided by the embodiment of the present invention can also solve the problem that the existing cascade system cannot support multi-channel point-to-point selection and viewing.

[0089] like Figure 7 As shown, T1, T2, and T3 are mounted under MCU_A, T4, T5, and T6 are mounted under MCU_B, and multiple cascading channels (ab1, ab2, and ab3) are set between MCU_A and MCU_B.

[0090] The above-mentioned MCUs (MCU_A and MCU_B) select an appropriate cascade channel to send corresponding video code streams according to the viewing information sent by the local conference site.

[0091] Assuming that it is necessary to implement T1 to select T4, T2 to select T5, and T3 to select T6 at the same time, the workflows of MCU_A and MCU_B are as follows:

[0092] The workflow of MCU_A is:

[0093] Receive the selection information, the selection information is used to indicate: T1 selects T4, T2 selects T5, and T3 sel...

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Abstract

A method for controlling a multimedia code stream in a media control server cascaded system is disclosed in the present invention. In the cascaded system, multiple cascaded channels are established among all media control servers. The method comprises: sending a plurality of multimedia code streams to other media control servers via the pre-established multiple cascaded channels. A media control server and media control server cascaded system are also disclosed in the present invention. In the embodiments of the present invention, multiple cascaded channels can be established for each of the media control servers. Therefore when audio code streams are being forwarded, the operations such as mixing, encoding and the like may not to be performed on the audio code streams, but some audio code streams can be selected from them and can be sent directly to the next equipment in the transmitting path. Thus, a transmission time delay, caused by performing the operations such as mixing, encoding and the like on the audio data by the equipments of each of the middle stages on the transmission path, is reduced. And the multiple video code streams are transmitted simultaneously through multiple cascaded channels, all kinds of the application implements are extended, and the requirements of users are satisfied.

Description

technical field [0001] The present invention relates to the technical field of communications, and more specifically, to a media control server system and a method and device for controlling multimedia streams. Background technique [0002] With the continuous development of network technology and broadband construction, multimedia conference systems have been widely used in work and life. The multimedia conferencing system is a communication method between two or more locations through a transmission channel using video conferencing technology and equipment. [0003] In video conference applications, multi-point control units can be cascaded with each other, and by holding a cascaded conference, terminal sites under different multi-point control units (Multi Control Unit, MCU) can be scheduled in the same conference. [0004] However, only one cascading channel is set between the MCUs, that is to say, only one multimedia code stream can be transmitted between the MCUs, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/15
CPCH04N7/152
Inventor 林永琪陈庆丰徐凌峰王恩奎陈显义
Owner HUAWEI DEVICE CO LTD