CN104601932B - The method of satellite video conference system and satellite video meeting - Google Patents
The method of satellite video conference system and satellite video meeting Download PDFInfo
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- CN104601932B CN104601932B CN201510017615.XA CN201510017615A CN104601932B CN 104601932 B CN104601932 B CN 104601932B CN 201510017615 A CN201510017615 A CN 201510017615A CN 104601932 B CN104601932 B CN 104601932B
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Abstract
The present invention provides a kind of methods of satellite video conference system and satellite video meeting, wherein, satellite video conference system, including main meeting-place system and multiple branch's field systems, main meeting-place system is communicated with multiple branch's field systems by satellite delivery system, main meeting-place system includes main meeting-place video processing component and the first input-output equipment, the first input-output equipment and main meeting-place video processing component data connection；Main meeting-place system further includes satellite bandwidth administrative unit；Branch's field system includes sub-venue video processing component and the second input-output equipment, second input-output equipment and sub-venue video processing component data connection, the second input-output equipment carry out obtaining the media information of sub-venue and are sent to sub-venue video processing component.Satellite video conference system of the present invention and the method for satellite video meeting can make the wide coverage of video conference, transmission rate high.
Description
Technical field
The present invention relates to fields of communication technology, more particularly to the side of satellite video conference system and satellite video meeting
Method.
Background technology
Video conferencing system is a kind of novel means of communication, it multi-multipoint can also be led to point-to-point communication
Letter.It carries media information on same transmission line：Video, audio and data etc. realize multiple spot real-time, interactive communications, together
When the activity condition of different location participant, conference content and various files can also be presented in the form of visual news
Each sub-venue.Video conferencing system is generally transmitted by general wide area network or LAN into row information, by the shadow of network
Sound is larger, and transmission rate is low, and it is also very limited by network to be limited its coverage area.
Invention content
It is an object of the present invention to provide a kind of to make the wide coverage of video conference, transmission rate are high to defend
The method of star video conferencing system and satellite video meeting.
According to an aspect of the present invention, a kind of satellite video conference system, including main meeting-place system and multiple points are provided
Meeting place system, the main meeting-place system are communicated with multiple branch's field systems by satellite delivery system, wherein described
Main meeting-place system includes main meeting-place video processing component and the first input-output equipment, first input-output equipment with it is described
Main meeting-place video processing component data connection, first input-output equipment obtain media information and the transmission of main meeting-place
To the main meeting-place video processing component, and receive the media information from the main meeting-place video processing component, the master
Meeting-place video processing component and the satellite delivery system data transmission；The main meeting-place system further includes that satellite bandwidth management is single
Member is used for：According to the band data of satellite and scheduled priority policy, determine that satellite transfers the media of the sub-venue feedback
The sequencing of information；Branch's field system includes sub-venue video processing component and the second input-output equipment, and described
Two input-output equipment and the sub-venue video processing component data connection, second input-output equipment, which obtain, to be divided
The media information in meeting-place is simultaneously sent to the sub-venue video processing component, and receives and come from the sub-venue video processing section
The media information of part, the sub-venue video processing component and the satellite delivery system data transmission.
Further, the main meeting-place video processing component includes：First satellite communication end, with the satellite delivery system
Data connection；Multipoint controller is electrically connected with first satellite communication end；First data conversion device, with the multiple spot control
Device electrical connection processed, first data conversion device and the mutual media information of the multipoint controller.
Further, the sub-venue video processing component includes：Second satellite communication end, with the satellite delivery system
Data connection；Second data conversion device is electrically connected with second satellite communication end, the second data conversion device and described the
The two mutual media informations in satellite communication end.
Further, first data conversion device and second data conversion device include codec
Multimedia signal processing machine, the codec are connect with the satellite data to receive signal and be decoded, or by matchmaker
It is transmitted after body information coding.
Further, the multipoint controller includes：It is Network Interface Unit, Call Control Unit, multiplexer unit, more
Road demultiplexing unit, audio processor, data processor, control processor, key handling distributor and call control processor；
First input-output equipment and second input-output equipment include：Colour picture monitor, sound system, camera shooting
Machine, video recorder and display.
According to another aspect of the present invention, a kind of method of satellite video meeting is provided, is regarded using above-mentioned satellite
Frequency conference system, including：The media information of main meeting-place is sent to multiple sub-venues by satellite delivery system；Described point of detection
Meeting-place whether to the main meeting-place feed back media information；It, will be described point in the case where the sub-venue has feedback media information
The media information of meeting-place feedback is sent to the main meeting-place by satellite delivery system；Media letter is not fed back in the sub-venue
In the case of breath, the media information of the main meeting-place is only transmitted to multiple sub-venues.
Further, it according to the media information of multiple sub-venue feedbacks, is selected according to the priority of above-mentioned sub-venue
One of highest sub-venue of priority level, the media information transmission fed back give the main meeting-place, Duo Gezhong
Other sequences of sub-venue according to priority from high to low, one by one by its media information transmission give the main meeting-place.
Further, multiple sub-venues are set into different Permission Levels from high to low；According to the sub-venue
Permission Levels determine the sequence of the priority from high to low.
Further, the feedback moment for detecting multiple sub-venues arranges sequencing according to the feedback moment；Root
The sequence of the priority is determined according to the feedback time sequencing of the sub-venue.
Further, the satellite transmission bandwidth that the media information of multiple sub-venue feedbacks occupies is detected；When multiple institutes
When stating the satellite transmission bandwidth of the media information occupancy of sub-venue feedback less than predetermined value, then simultaneous transmission gives the main meeting-place；
When the satellite transmission bandwidth that the media information of multiple sub-venue feedbacks occupies is more than predetermined value, then one of institute is reduced
Continue to detect the satellite transmission bandwidth of media information occupancy after stating the media information of sub-venue feedback, make a reservation for until it is less than
Value.
Satellite video conference system has the following advantages：
1 wide coverage saves running cost
Satellite video conference system has a wide range of covering, not by region, landform especially suitable in, remote transmission
And terrestrial broadcast networks, terrestrial communication networks limitation the characteristics of.And communications cost is with apart from unrelated, and the remoter advantage of distance is more
Obviously, Internet resources can be made full use of, operating cost is saved.
2 transmission rates are high, high stability
The system transmits the advanced technology being combined using DVB broadcast and IP data double-ways, supports video standards, can
The transmission of mass file (speech, data, video image etc.) is carried out, high clarity is had more, is high-speed datacasting system
System.The system also has high safety confidentiality and stability.
3 transmission modes are flexible
Unidirectional, two-way satellite communication can be provided, provide multiple business service, and there is extremely strong autgmentability and retractility,
Bandwidth expansion is simple, and web construction and resettlement are flexibly, conveniently.Satellite video conference system is flat in the transmission of " aerial " by structure
Platform can extremely flexibly transmit interactive video information, and ground network is had more in terms of the video conference of medium and long distance
Incomparable performance advantage.Satellite video conference system can be widely applied to government, finance, the energy, traffic, medical treatment, religion
Equal industry-by-industries are educated, typical field of application includes broadcast conference, corporate training and comprehensive multimedia programming etc..
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Description of the drawings
Some specific embodiments that the invention will be described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic diagram of satellite video conference system according to an embodiment of the invention；
Fig. 2 is the schematic diagram of the method for satellite video meeting according to an embodiment of the invention；
Fig. 3 be Fig. 2 Satellite video conferences method in part steps schematic diagram；
Fig. 4 is the schematic diagram according to the method for the satellite video meeting of another embodiment of the present invention.
Specific implementation mode
Fig. 1 is the schematic diagram of satellite video conference system according to an embodiment of the invention.The satellite of the present embodiment regards
Frequency conference system includes main meeting-place system and multiple branch's field systems, and main meeting-place system is thrown with multiple branch's field systems by satellite
Delivery system 30 is communicated.
Main meeting-place system includes main meeting-place video processing component and the first input-output equipment 11, the first input-output equipment
11 with main meeting-place video processing component data connection, and the media information that the first input-output equipment 11 obtain main meeting-place is concurrent
Main meeting-place video processing component is given, and receives the media information from main meeting-place video processing component, at the video of main meeting-place
Manage component and 30 data transmission of satellite delivery system.And main meeting-place system further includes satellite bandwidth administrative unit, satellite bandwidth
Administrative unit is used for the band data according to satellite and scheduled priority policy, determines that satellite transfers the media of sub-venue feedback
The sequencing of information can transfer sub-venue and main meeting-place media-comunication in this way.
Branch's field system includes sub-venue video processing component and the second input-output equipment 21, the second input-output equipment
21 with sub-venue video processing component data connection, and the media information that the second input-output equipment 21 obtain sub-venue is concurrent
Sub-venue video processing component is given, and receives the media information from sub-venue video processing component, at sub-venue video
Manage component and 30 data transmission of satellite delivery system.
For satellite video conference system, in code encoding/decoding mode, video and audio processing etc. and ordinary video meeting
Conference system is identical, but due to the transmission mode of satellite delivery system is with terrestrial transmission, there is prodigious difference, satellites
Delivery system wide coverage, transmission rate are high, safety is good and cost-effective.Meanwhile the satellite bandwidth management of main meeting-place is single
Member can select the media information of sub-venue feedback and main meeting-place to interact, selection can in this way according to the amount of bandwidth of satellite
To carry out the transmission of high speed using the maximum bandwidth of satellite, it ensure that conference system to image sharpness, sound articulation etc.
High request.
Meanwhile satellite video conference system has further the advantage that：
1 wide coverage saves running cost
Satellite video conference system has a wide range of covering, not by region, landform especially suitable in, remote transmission
And terrestrial broadcast networks, terrestrial communication networks limitation the characteristics of.And communications cost is with apart from unrelated, and the remoter advantage of distance is more
Obviously, Internet resources can be made full use of, operating cost is saved.
2 transmission rates are high, high stability
The system transmits the advanced technology being combined using DVB broadcast and IP data double-ways, supports video standards, can
The transmission of mass file (speech, data, video image etc.) is carried out, high clarity is had more, is high-speed datacasting system
System.The system also has high safety confidentiality and stability.
3 transmission modes are flexible
Unidirectional, two-way satellite communication can be provided, provide multiple business service, and there is extremely strong autgmentability and retractility,
Bandwidth expansion is simple, and web construction and resettlement are flexibly, conveniently.Satellite video conference system is flat in the transmission of " aerial " by structure
Platform can extremely flexibly transmit interactive video information, and ground network is had more in terms of the video conference of medium and long distance
Incomparable performance advantage.Satellite video conference system can be widely applied to government, finance, the energy, traffic, medical treatment, religion
Equal industry-by-industries are educated, typical field of application includes broadcast conference, corporate training and comprehensive multimedia programming etc..
It is further preferred that referring to Fig. 1, main meeting-place video processing component includes the first satellite communication end 12, multiparty control
Device 13 and the first data conversion device 14, the first satellite communication end 12 and 30 data connection of satellite delivery system, multiparty control
Device 13 is electrically connected with the first satellite communication end 12, and the first data conversion device 14 is electrically connected with multipoint controller 13, the first data
Conversion equipment 14 and 13 mutual media information of multipoint controller.Sub-venue video processing component includes the second satellite communication end
22 and second data conversion device 23, the second satellite communication end 22 and 30 data connection of satellite delivery system, the second data conversion
Device 23 is electrically connected with the second satellite communication end 22, the second data conversion device 23 and the second satellite communication end 22 mutually transmission matchmaker
Body information.
First satellite communication end 12 and the second satellite communication end 22 are the reception sending device being transmitted with satellite.First
Data conversion device 14 and the second data conversion device 23 include the multimedia signal processing machine of codec, codec
It is connect with satellite data to receive signal and be decoded, or is transmitted after media information is encoded.
Multipoint controller 13, i.e. MCU, are only installed at main meeting-place, it is the key equipment of video conferencing system, main work(
Can be switched over to video, voice and data-signal.Such as it can cut the picture signal for being transmitted to the meeting-place MCU spokesman
Change to all meeting-place.For voice signal, if there are several speeches simultaneously, mixed processing can be carried out to them, selected highest
Audio signal is switched to other meeting-place.Multipoint controller 13 includes：Network Interface Unit, Call Control Unit, multiplexing are single
At member, demultiplexing unit, audio processor, data processor, control processor, key handling distributor and Call- Control1
Manage device.In addition, multipoint controller 13 also starts the number of meeting point, the bandwidth of digital communication, the control model of meeting, system
Intervened and be arranged with fault diagnosis parameter etc..
In order to make satellite video conference system be equipped with the video effect of high standard, so the first input-output equipment 11 and the
Two input-output equipment 21 include colour picture monitor, sound system, video camera, video recorder and display.
Satellite video conference system based on the present embodiment has broadband, Mulit-point Connection, real-time continuous transmission, at times etc.
Feature, the system make full use of the adjustable broadcast of satellite communication, bandwidth, frequency band multiplexing, the directly characteristics such as foundation connection, make video
Conference system was not only reliable and stable, but also made full use of transmission bandwidth, greatly reduced the operating cost of video conference.It is passed according to user
The difference of defeated demand may be used three kinds of networking plans, meet users on diversity：
(1) broadcast mode
The video conferencing of broadcast mode is multicast.Under normal conditions, hair station is the main meeting-place of video conferencing, receiving station
For sub-venue.But it is not necessarily the main meeting-place of satellite system, one in hair station or each sub-venue.This networking
Form can save satellite communication bandwidth resources to the greatest extent, save the multipoint control unit equipment in TV conference system,
Not only greatly reduce rent on leased satellite channel, but also saves original equipment cost.
(2) interactive mode
In this networking model, all meeting points fully achieve the Interactive function of full duplex.In such a mode, each point
Between can be real-time interaction with link up, the synergetic office work being really achieved between the user of different location.Interactive mode overcomes
The obstruction of time and space make user know from experience the superiority of " face-to-face " meeting.
(3) aggregative model
This pattern has both the group of broadcast mode and interactive mode by being researched and developed on the basis of fully considering user demand
Web frame and preferred networking model.On the one hand there is the characteristics of satellite network covers extensively, while can be according to the feelings of certain points
Condition sets up two-way video conferencing, completes interactive television meeting, and avoids fund input high in interactive mode.Specifically
For, Heterosis exists：All meeting-place facts are all uploaded to the main meeting-place with multipoint controller, are controlled by main meeting-place all
The camera angle of sub-venue, and can be arbitrarily decided and be talked by which sub-venue.Or according to the band data of satellite and predetermined
Priority policy, determine the media information for transferring which sub-venue to main meeting-place.Both be not in order in interactive mode in this way
The phenomenon of sequence confusion, and the occupancy to satellite channel is greatly saved.Also by MCU with progress video signal processing in TV programme
The studio of Shi Caiyong is combined together, and image is made to be more clear, and manifestation mode is more abundant.
The present invention also provides a kind of embodiments of the method for satellite video meeting to use above-described embodiment referring to Fig. 2
Satellite video conference system, this method include：
S10：The media information of main meeting-place is sent to multiple sub-venues by satellite delivery system；
S20：Detect sub-venue whether to main meeting-place feed back media information；
S31：In the case where sub-venue has feedback media information, the media information that sub-venue is fed back is delivered by satellite
System is sent to main meeting-place；
S32：In the case where sub-venue does not feed back media information, the media information of main meeting-place is only transmitted to multiple branches
.
The method of the present embodiment, it is contemplated that the bandwidth of satellite is limited, so whether setting feeds back matchmaker by detection sub-venue
Body information, to optimize the transmission of media information, this avoid the sub-venue occupancy that some do not need media information feedback
Limited bandwidth maximization is applied in the resource for needing to transmit by the problem of resource.Pass through interconnection in compared with the prior art
Net is transmitted for the mode of media information, it is ensured that the meeting-place of video conference carries out fine definition, high voice quality
Video conference.
During actually carrying out video conference, each sub-venue will appear different demands, such as：It is in certain sub-venue
The meeting-place of very important person, sub-venue needs are preferentially transmitted；Some other sub-venues may not be the main of participation meeting
Personnel are only to carry out audit Deng personnel, and priority is not important.So the method for the present embodiment, in advance demarcates sub-venue
Priority, and select according to the height of priority the sequence of media information.
Specifically, in this method, referring to Fig. 3, further include after step S31：
S40：According to the media information that multiple sub-venues are fed back, one of those is selected according to the priority of above-mentioned sub-venue
The highest sub-venue of priority level, the media information transmission fed back to main meeting-place, it is multiple in other sub-venues according to excellent
The sequence of first grade from high to low, one by one by its media information transmission to main meeting-place.
Set priority preset rules can there are many, the method in the present embodiment is different by being set to sub-venue
Permission Levels carry out setting the priority, e.g., high-grade Permission Levels can will be arranged in the meeting important persons of sub-venue,
Hearing people or other meetings personnel are arranged to lower Permission Levels, the sub-venue of high-grade claim grade preferentially into
Row media information.Specifically, priority is set in this method to include the following steps：
Multiple sub-venues are set to different Permission Levels from high to low.
Determine the sequence of priority from high to low according to the Permission Levels of sub-venue.
Referring to Fig. 4, show another embodiment of the method for satellite video meeting, the step of the present embodiment with above-mentioned step
Rapid S10, S20, S31, S32, it should be noted that S32 steps are not shown in Fig. 4.It is further preferred that step S31 it
This method further includes afterwards：
S51：Detect the satellite transmission bandwidth that the media information of multiple sub-venue feedbacks occupies；
S52：When the satellite transmission bandwidth that the media information of multiple sub-venues feedback occupies is less than predetermined value, then pass simultaneously
It is defeated by main meeting-place；
S53：When the satellite transmission bandwidth that the media information of multiple sub-venues feedback occupies is more than predetermined value, then it is reduced
In continue to detect the satellite transmission bandwidth of media information occupancy after the media information that feeds back of a sub-venue, until its be less than it is pre-
Definite value.
Above-mentioned steps are for example：When the maximum value that the media information occupancy of multiple sub-venues is less than bandwidth (can also be predetermined
Value) when, due to that will not be caused the problems such as not smooth the media information of multiple sub-venues is carried out at the same time transmission, so can
The media information of multiple sub-venues is directly carried out at the same time transmission.If alternatively, the media information occupancy of four sub-venues
When having had been above the maximum value or preset value of bandwidth, simultaneous transmission is certain to that image quality is caused to be damaged slack problem, institute
After the media information for reducing one of meeting-place with selection, then step S51 is carried out, if the media information of three sub-venues occupies
Amount is still more than maximum value bandwidth or preset value, then continues to reduce branch number, until less than bandwidth maximum value or
Predetermined value.
In other examples, the time that media information can also be fed back according to each sub-venue carries out setting priority,
The feedback moment, more early sub-venue was then preferentially transmitted, feedback moment later sub-venue according to respective feedback time one by one
It is transmitted, it is also ensured that efficiently use bandwidth, ensure the high-quality transmission of meeting.Specifically, the method for other embodiment
It include step：The feedback moment for detecting multiple sub-venues arranges sequencing according to the feedback moment；According to the feedback of sub-venue
Chronological order determines the sequence of priority.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (9)
1. a kind of satellite video conference system, which is characterized in that including main meeting-place system and multiple branch's field systems, the main meeting
Field system is communicated with multiple branch's field systems by satellite delivery system (30), wherein
The main meeting-place system includes main meeting-place video processing component and the first input-output equipment (11), and first input is defeated
Go out equipment (11) and the main meeting-place video processing component data connection, first input-output equipment (11) carries out acquisition master
The media information in meeting-place is simultaneously sent to the main meeting-place video processing component, and receives and come from the main meeting-place video processing section
The media information of part, the main meeting-place video processing component and satellite delivery system (30) data transmission；
The main meeting-place system further includes satellite bandwidth administrative unit, is used for：According to the band data of satellite and scheduled preferential
Grade strategy determines that satellite transfers the sequencing of the media information of the sub-venue feedback；
Branch's field system includes sub-venue video processing component and the second input-output equipment (21), and second input is defeated
Go out equipment (21) and the sub-venue video processing component data connection, second input-output equipment (21), which obtain, divides
The media information in meeting-place is simultaneously sent to the sub-venue video processing component, and receives and come from the sub-venue video processing section
The media information of part, the sub-venue video processing component and satellite delivery system (30) data transmission, described first is defeated
Enter output equipment (11) and second input-output equipment (21) includes：Colour picture monitor, sound system, camera shooting
Machine, video recorder and display.
2. satellite video conference system according to claim 1, which is characterized in that the main meeting-place video processing component packet
It includes：
First satellite communication end (12), with satellite delivery system (30) data connection；
Multipoint controller (13) is electrically connected with first satellite communication end (12)；
First data conversion device (14) is electrically connected with the multipoint controller (13), first data conversion device (14)
With the multipoint controller (13) mutual media information.
3. satellite video conference system according to claim 2, which is characterized in that the sub-venue video processing component packet
It includes：
Second satellite communication end (22), with satellite delivery system (30) data connection；
Second data conversion device (23) is electrically connected with second satellite communication end (22), the second data conversion device (23)
With second satellite communication end (22) mutual media information.
4. satellite video conference system according to claim 3, which is characterized in that first data conversion device (14)
Include the multimedia signal processing machine of codec, the codec and institute with second data conversion device (23)
Satellite data connection is stated to receive signal and be decoded, or is transmitted after media information is encoded.
5. satellite video conference system according to claim 2, which is characterized in that the multipoint controller (13) is installed on
Main meeting-place, including：Network Interface Unit, Call Control Unit, multiplexer unit, demultiplexing unit, audio processor,
Data processor, control processor, key handling distributor and call control processor.
6. a kind of method of satellite video meeting, using the satellite video conference system described in any one of claim 1 to 5,
It is characterised in that it includes：
The media information of main meeting-place is sent to multiple sub-venues by satellite delivery system；
Detect the sub-venue whether to the main meeting-place feed back media information；
In the case where the sub-venue has feedback media information, the media information that the sub-venue is fed back is delivered by satellite
System is sent to the main meeting-place；
Detect the satellite transmission bandwidth that the media information of multiple sub-venue feedbacks occupies；
When the satellite transmission bandwidth that the media information of multiple sub-venue feedbacks occupies is less than predetermined value, then simultaneous transmission is given
The main meeting-place；
When the satellite transmission bandwidth that the media information of multiple sub-venue feedbacks occupies is more than predetermined value, then wherein one is reduced
Continue to detect the satellite transmission bandwidth of media information occupancy after the media information of a sub-venue feedback, until it is less than in advance
Definite value；
In the case where the sub-venue does not feed back media information, the media information of the main meeting-place is only transmitted to multiple described
Sub-venue.
7. a kind of method of satellite video meeting, using the satellite video conference system described in any one of claim 1 to 5,
It is characterised in that it includes：
The media information of main meeting-place is sent to multiple sub-venues by satellite delivery system；
Detect the sub-venue whether to the main meeting-place feed back media information；
In the case where the sub-venue has feedback media information, the media information that the sub-venue is fed back is delivered by satellite
System is sent to the main meeting-place；
According to the media information of multiple sub-venue feedbacks, select one of those preferential according to the priority of above-mentioned sub-venue
The highest-ranking sub-venue, the media information transmission fed back give the main meeting-place, it is multiple in other described branches
Sequence of the field according to priority from high to low, gives its media information transmission to the main meeting-place one by one；
In the case where the sub-venue does not feed back media information, the media information of the main meeting-place is only transmitted to multiple described
Sub-venue.
8. the method for satellite video meeting according to claim 7, which is characterized in that
Multiple sub-venues are set into different Permission Levels from high to low；
Determine the sequence of the priority from high to low according to the Permission Levels of the sub-venue.
9. the method for satellite video meeting according to claim 7, which is characterized in that
The feedback moment for detecting multiple sub-venues arranges sequencing according to the feedback moment；
The sequence of the priority is determined according to the feedback time sequencing of the sub-venue.
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| CN105553941A (en) * | 2015-12-07 | 2016-05-04 | 成都视达科信息技术有限公司 | Satellite video sharing service method and system based on user-generated content |
| CN106713820B (en) * | 2016-11-29 | 2020-02-07 | 苏州科达特种视讯有限公司 | Broadcast frequency switching method and device for satellite video conference |
| CN108696720B (en) * | 2018-05-08 | 2020-04-07 | 熊猫电子集团有限公司 | Video scheduling system and method suitable for satellite communication |
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| CN2481094Y (en) * | 2001-06-15 | 2002-03-06 | ***电子第五十四研究所 | Satellite conference television apparatus |
| CN102209230A (en) * | 2011-05-31 | 2011-10-05 | 浙江中烟工业有限责任公司 | Video conference system with main venue control module |
| CN204316652U (en) * | 2015-01-13 | 2015-05-06 | 航天数字传媒有限公司 | Satellite video conference system |
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