CN100366080C - Method of implementing switching of single picture and multi-pictures in conference television system - Google Patents
Method of implementing switching of single picture and multi-pictures in conference television system Download PDFInfo
- Publication number
- CN100366080C CN100366080C CNB2003101167719A CN200310116771A CN100366080C CN 100366080 C CN100366080 C CN 100366080C CN B2003101167719 A CNB2003101167719 A CN B2003101167719A CN 200310116771 A CN200310116771 A CN 200310116771A CN 100366080 C CN100366080 C CN 100366080C
- Authority
- CN
- China
- Prior art keywords
- mcu
- pictures
- video
- image
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
Images
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Telephonic Communication Services (AREA)
Abstract
The present invention discloses a method for realizing switches of a single picture and multiple pictures in a conference television system. The method comprises the steps that an MCU transmits capability exchange request to all terminals which are in conference according to a picture switching command; the terminals respectively carry out capability exchanges with the MCU again; the MCU and the terminals mutually transmit audio and video media flows according to capabilities after exchanges.
Description
Technical field
The present invention relates to the video conferencing technology, relate in particular to a kind of method that realizes that in TV conference system single-image and many pictures switch.
Background technology
In video conferencing, in existing single-image and the four picture hand-off process, mainly contain following two kinds of ways:
1, the MCU side does not realize codec functions, but after holding a meeting, can not directly carry out handover operation, if want to switch, then must hold corresponding meeting again.Therefore, say definitely that this scheme can not be referred to as the dynamic switching on the practical significance.
2, realize codec functions in the MCU side, when the user watched four pictures, MCU must carry out decode operation to each meeting-place in four pictures earlier, again the code stream in four meeting-place is made unified coding, generates one road code stream, sends to each terminal meeting-place at last.Though this scheme also can be implemented in the dynamic switching of single-image and four pictures in the meeting, need carry out coding-decoding operation, and the present invention is not dynamically needing to carry out coding-decoding operation in the handoff procedure;
In the prior art, for first kind of implementation, its does not have function of dynamically switching fundamentally, so just be difficult to satisfy user's demand yet.And for second kind of implementation, though can realize dynamic switching, owing to need on MCU, realize coding-decoding operation, therefore, will inevitably take the ample resources of MCU, increase the cost of MCU, simultaneously, owing to need carry out coding-decoding operation, also will inevitably strengthen the delay of image.
The present invention can not carry out under the situation of coding-decoding operation, realizes the dynamic handoff functionality of single-image/four pictures.It neither can take the ample resources of MCU, also can not strengthen the delay of image.Thereby remedied the defective of prior art.
Summary of the invention
The object of the present invention is to provide a kind of method that realizes that in TV conference system single-image and many pictures switch, realize in the prior art that to solve there are the problem that takies ample resources and picture delay in single-image and the switching of many pictures.
For addressing the above problem, the invention provides following technical proposals:
A kind of method that realizes that in TV conference system single-image and many pictures switch, described TV conference system is made up of multipoint control unit (MCU), MCU turnkey console, terminal and communication network, and MCU and terminal send and receive audio-video frequency media stream and realize video conferencing by communication network; The method comprising the steps of:
Issue the switching command of single-image and four pictures to the MCU that carries out video conferencing by the MCU turnkey console;
MCU is according to each the terminal transmitting capacity exchange request in meeting of described switching command;
Described each terminal is carried out capabilities exchange again with MCU respectively; And
Send audio-video frequency media stream by the ability after exchanging again between MCU and the terminal.
Wherein:
Described many pictures are four pictures.
When video conferencing switches to four pictures from single-image, MCU state its only have H.261QCIF the video reception ability and video transmitting capacity H.261CIF, statement simultaneously is maximum, and to receive bandwidth be that 1/4th and maximum transmission bandwidth of meeting video bandwidth is the meeting video bandwidth.MCU at first preserves the active conference ability before the transmitting capacity collection is arranged, so that recover single-image.
When video conferencing switches to single-image from four pictures, provide single-image Video processing ability by the MCU turnkey console to MCU, MCU sends out capability set according to this Video processing ability to each terminal.
When in the cascade video conferencing, carrying out switching between single-image and four pictures, unify control, only require to carry out capabilities exchange with this from each terminal on the MCU again according to the switching of main MCU from MCU by main MCU.
The present invention carries out under the situation of coding and decoding video not needing, and just can realize H.261 video at single-image and many pictures, the especially dynamic switching between four pictures, and it neither needs to take a large amount of MCU resources, also can not increase slowed-down video; Simultaneously in the process of the switching of single-image and four pictures, can customize effect after the dynamic switching.
Description of drawings
Fig. 1 is the TV conference system networking diagram;
Fig. 2 is the main flow chart that dynamically switches between single-image and four pictures;
Fig. 3 dynamically switches to the process chart of four pictures for single-image;
Fig. 4 is the process chart that four pictures dynamically switch to single-image;
Fig. 5 is the networking diagram of cascade video conferencing.
Embodiment
Consult shown in Figure 1ly, generally speaking, the user can use this system group network figure to use video conferencing.Conference system is by multipoint control unit (MCU), MCU turnkey console, terminal and communication network.The user can pass through turnkey console/terminal and hold a H.261 meeting, flows to guild's view TV by sending and receive audio-video frequency media by communication network between MCU and the terminal.In the process that meeting is held, can carry out the dynamic switching of single-image/four pictures by turnkey console or terminal.
Consult shown in Figure 2ly, in a meeting H.261, realize that dynamically the main flow process of switching is as follows between single-image and four pictures:
1, MCU and terminal room carry out the single-image video conferencing;
2, issue the picture switching command by the MCU turnkey console to MCU;
3, MCU is by sending corresponding capability set to each terminal;
4, each terminal and MCU carry out capabilities exchange;
5, send by the result of capabilities exchange again between MCU and the terminal and the sound Media Stream is looked in reception.
MCU is by carrying out the actual code stream that capabilities exchange comes control terminal to send again with terminal, thereby reaches the dynamic switching of single-image/four pictures.
Consult shown in Figure 3ly, the handling process that the single-image meeting switches to four frame sessions is as follows:
1, MCU and terminal room carry out the single-image video conferencing.
2, issue the order that switches to four pictures from single-image to MCU by the MCU turnkey console.
3, the terminal transmitting capacity exchange request of MCU in meeting.
In capability set, MCU requires to state that it only has video reception ability H.261QCIF, and video transmitting capacity H.261CIF states that simultaneously the maximum reception of MCU video bandwidth is 1/4 of a meeting video bandwidth, and maximum transmission bandwidth is the meeting video bandwidth.
MCU at first preserves the ability of active conference before the transmitting capacity collection, so that the user recovers original single-image.
4, terminal is carried out capabilities exchange again after receiving the capability set that MCU sends over, and adjusts the transmitting-receiving strategy to video, to adapt to the needs that the MCU capability set changes.
5, send by the result of capabilities exchange again between MCU and the terminal and look audio medium stream, thereby realize that single-image switches to four pictures.
Consult shown in Figure 4ly, the handling process that four frame sessions switch to the single-image meeting is as follows:
1, MCU and terminal room carry out four frame session TVs.
In four frame sessions, H.261CIF the code stream that MCU sends over receiving terminal H.261QCIF to send code stream to terminal.
2, issue the order that switches to single-image from four pictures to MCU by the MCU turnkey console.
Carry out of the switching of four pictures, then need the user to import corresponding single-image Video processing ability (mainly being agreement) to single-image.
3, MCU according to the input video capability to terminal transmitting capacity collection, to require to carry out again capabilities exchange.
4, terminal is carried out capabilities exchange again after receiving the capability set that MCU sends over, and adjusts the transmitting-receiving strategy to video, to adapt to the needs that the MCU capability set changes.
5, send by the result of capabilities exchange again between MCU and the terminal and look audio medium stream, thereby realize that four pictures switch to single-image.
Consult shown in Figure 5, concerning the cascade meeting, because four pictures are finished on main MCU, so switching to single-image and four pictures, also unify control by main MCU, from MCU single-image and four picture switching processing processes, only according to the switching requirement of main MCU, again with this MCU on each terminal carry out capabilities exchange procedure again, concrete processing is identical with process among Fig. 3 or Fig. 4.Therefore, in the cascade meeting, serving as the role who transmits from MCU.
In addition, when switching, the user can also be according to the actual needs, actual effect (on turnkey console, being provided with) after determine switching, when switching to four pictures at single-image, can clear and definite four pictures in the actual meeting-place of each sprite correspondence, equally, when then four pictures switch to single-image, also can clearly switch the back and the time broadcast certain meeting-place or enter operation such as acoustic control switching state, thereby reach real dynamic effect.
More than with four pictures for the present invention is had been described in detail, for other many pictures, its changing method is in like manner.
Claims (6)
1. method that realizes that in TV conference system single-image and many pictures switch, described TV conference system is made up of multipoint control unit MCU, MCU turnkey console, terminal and communication network, and MCU and terminal send and receive audio-video frequency media stream and realize video conferencing by communication network; It is characterized in that the method comprising the steps of:
MCU is according to each the terminal transmitting capacity exchange request in meeting of picture switching command;
Described each terminal is carried out capabilities exchange again with MCU respectively; And
Send audio-video frequency media stream by the ability after exchanging again between MCU and the terminal.
2. the method for claim 1 is characterized in that, described many pictures are four pictures.
3. method as claimed in claim 2, it is characterized in that, when video conferencing switches to four pictures from single-image, MCU states the video reception ability that only has H.261QCIF and video transmitting capacity H.261CIF in capability set, statement simultaneously is maximum, and to receive bandwidth be that 1/4th and maximum transmission bandwidth of meeting video bandwidth is the meeting video bandwidth.
4. method as claimed in claim 3 is characterized in that, MCU at first preserves the ability of active conference before the transmitting capacity collection, so that recover single-image.
5. method as claimed in claim 2 is characterized in that, when video conferencing switches to single-image from four pictures, provides single-image Video processing ability by the MCU turnkey console to MCU, and MCU sends out capability set according to this Video processing ability to each terminal.
6. method as claimed in claim 2, it is characterized in that, when in the cascade video conferencing, carrying out switching between single-image and four pictures, unify control, only require to carry out capabilities exchange with this from each terminal on the MCU again according to the switching of main MCU from MCU by main MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101167719A CN100366080C (en) | 2003-11-21 | 2003-11-21 | Method of implementing switching of single picture and multi-pictures in conference television system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101167719A CN100366080C (en) | 2003-11-21 | 2003-11-21 | Method of implementing switching of single picture and multi-pictures in conference television system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1620133A CN1620133A (en) | 2005-05-25 |
| CN100366080C true CN100366080C (en) | 2008-01-30 |
Family
ID=34760764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101167719A Expired - Fee Related CN100366080C (en) | 2003-11-21 | 2003-11-21 | Method of implementing switching of single picture and multi-pictures in conference television system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100366080C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901668B (en) * | 2005-07-19 | 2012-05-23 | 腾讯科技（深圳）有限公司 | Multiple person video frequency data display processing method and system |
| CN100583985C (en) * | 2007-04-27 | 2010-01-20 | 华为技术有限公司 | Method, apparatus and system for switching pictures in video service |
| CN102006450A (en) | 2009-09-01 | 2011-04-06 | 华为终端有限公司 | Method, equipment and system for displaying video conference virtual meeting place |
| CN101707714B (en) * | 2009-11-18 | 2011-08-10 | 华为终端有限公司 | Image processing method and device of multi-picture video session |
| CN102316301B (en) | 2010-06-29 | 2014-05-07 | 华为终端有限公司 | Method, system and device for switching conferences |
| TW201215848A (en) * | 2010-10-07 | 2012-04-16 | Novatek Microelectronics Corp | Navigational operation method |
| CN104219484B (en) * | 2013-06-01 | 2019-05-31 | 中兴通讯股份有限公司 | The long-range ability exchange method and device that endpoint is presented |
| CN104219483B (en) * | 2013-06-01 | 2019-10-25 | 中兴通讯股份有限公司 | The long-range ability exchange method and device that endpoint is presented |
| CN104253969B (en) * | 2013-06-28 | 2017-12-05 | 华为技术有限公司 | The rendering method and device of more picture compositions |
| CN105323532B (en) * | 2014-06-30 | 2019-10-15 | 中兴通讯股份有限公司 | A kind of adaptive display method and device of mobile terminal image |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08317366A (en) * | 1995-05-22 | 1996-11-29 | Nec Eng Ltd | Multi-spot video conference system |
| JPH11150712A (en) * | 1997-11-17 | 1999-06-02 | Mitsubishi Electric Corp | Multi-point video conference system |
| CN1404311A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Method for providing opened video message meeting |
| CN1433222A (en) * | 2002-01-08 | 2003-07-30 | 华为技术有限公司 | Multiple-picture display method in video conference system |
-
2003
- 2003-11-21 CN CNB2003101167719A patent/CN100366080C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08317366A (en) * | 1995-05-22 | 1996-11-29 | Nec Eng Ltd | Multi-spot video conference system |
| JPH11150712A (en) * | 1997-11-17 | 1999-06-02 | Mitsubishi Electric Corp | Multi-point video conference system |
| CN1404311A (en) * | 2001-09-13 | 2003-03-19 | 华为技术有限公司 | Method for providing opened video message meeting |
| CN1433222A (en) * | 2002-01-08 | 2003-07-30 | 华为技术有限公司 | Multiple-picture display method in video conference system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1620133A (en) | 2005-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6018360A (en) | Method of switching a call to a multipoint conference call in a H.323 communication compliant environment | |
| US6986158B1 (en) | System and method for distributing video information over network | |
| US5898457A (en) | TV conference communication device and method of controlling the same | |
| CN101895718B (en) | Video conference system multi-image broadcast method, and device and system thereof | |
| CN103327287B (en) | A kind of conference signal playing method and device, video conference terminal, mobile device | |
| EP2704355B1 (en) | Method, device and system for establishing multi-cascade channel | |
| CN102387338B (en) | Distributed type video processing method and video session system | |
| WO2011088656A1 (en) | Method and system for implementing three-party call of videophone by mobile terminals | |
| CN100366080C (en) | Method of implementing switching of single picture and multi-pictures in conference television system | |
| CN101931783A (en) | Double-flow transmitting system and method for video session | |
| CN101098244A (en) | Method and system for media process in multi-point conference | |
| CN101656864A (en) | Method for realizing selection and watching of video and video session system | |
| WO2014095671A1 (en) | Method and a device for optimizing large scaled video conferences | |
| CN100454821C (en) | Method for resource sharing among MCUs in videoconference system | |
| CN103595950A (en) | Method for carrying out video communication based on cable digital television set top box | |
| EP1994744A2 (en) | System and method for configuring devices to facilitate video telephony | |
| CN101350908A (en) | Video data transmission system and method for network video conference | |
| CN108156413B (en) | Video conference transmission method and device and MCU | |
| CN104869347B (en) | Video call method and device | |
| WO2012062153A1 (en) | Method, system and mcu for achieving multipicture in cascade conference | |
| JP5579660B2 (en) | Multipoint video conferencing equipment | |
| CN101635822A (en) | Method for realizing double stream automatic transmission of conference television terminal | |
| CN101321259B (en) | Multimedia equipment control system, control data transmission and processing equipment and method thereof | |
| CN100502295C (en) | Terminal dynamic access method based on multi-point control unit | |
| CN101179691B (en) | Method of extending multi-point control cell capability in session television system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170920 Address after: 061000, No. 20 Xiao Zhuang village, Yang Jia temple, Wuqiao County, Cangzhou, Hebei Patentee after: Jin Shuping Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: Huawei Technologies Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20171121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |