CN101068346A - Non-far end ground network video and audio frequency signal satellite direct broadcasting device and method - Google Patents
Non-far end ground network video and audio frequency signal satellite direct broadcasting device and method Download PDFInfo
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- CN101068346A CN101068346A CNA2007100229881A CN200710022988A CN101068346A CN 101068346 A CN101068346 A CN 101068346A CN A2007100229881 A CNA2007100229881 A CN A2007100229881A CN 200710022988 A CN200710022988 A CN 200710022988A CN 101068346 A CN101068346 A CN 101068346A
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Abstract
A audio-video signal satellite live telecast device without far-end ground network is prepared as connecting communication satellite to outdoor antenna in satellite sending unit through radio transmission, connecting satellite modem in satellite sending unit to multimedia device in auxiliary unit through network line and connecting audio-video receiving terminal in master station to computer terminal in audio-video collection/treatment unit through video line. Its live telecasting method is also disclosed.
Description
Technical field
The present invention relates to a kind of signal propagation device and method, under especially a kind of situation that does not have terrestrial network at far-end, far-end is looked audio frequency carry out device and method live on line via satellite.
Background technology
Because the many regional ground communication bandwidth resources of present stage China are not enough, can't support the transmission of Streaming Media.Obviously existing terrestrial interconnection net can not support well that channel then can address the above problem just via satellite: distant-end node can be set up with the center and directly be connected, and jumbo multi-medium data directly transmission puts in place; Information uploadings such as the image in mutual, sound, literal, general terrestrial interconnection net still can be supported well.The characteristics that have distance and covering face width based on satellite communication, it is vast in territory to be fit to very much China, underdeveloped remote districts of ground communication particularly, These characteristics has remedied the cost problem of using the long-distance broadband connections in ground on a large scale at a distance simultaneously, makes IP-based satellite transmits also can transmit all multi-medium datas simultaneously.Make things convenient for the netizen to watch the picture and the sound of far-end from network in addition, well solved under the situation of no any network, the problem of remote rating.
Existing technology is used two-way satellite modem, makes and can carry out the mutual audio transmission of looking between distant-end node and the center.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of video and audio frequency signal satellite direct broadcasting device and method of non-far end ground network, do not have at far-end under the situation of terrestrial network, far-end is looked audio frequency carry out live on line via satellite.
Technical scheme: the present invention utilizes satellite-signal that distal view picture and sound are sent to earth main website, the equipment of earth main website inserts INTERNET, thereby satellite network and terrestrial network are combined,, image and sound are carried out network direct broadcasting again by image pick-up card and server.
The video and audio frequency signal satellite direct broadcasting device of non-far end ground network of the present invention comprises main station unit, satellite sending unit, looks audio collection processing unit, auxiliary unit; In main station unit, satellite receive center is connected with communications satellite by wireless transmission, satellite receive center by netting twine with look the audio frequency receiving terminal and be connected;
In satellite sending unit, power amplifier is connected with satellite modem by coaxial cable, and the input of power amplifier is connected with exterior aerial; In looking the audio collection processing unit, computer server is connected with INTERNET network, terminal respectively by netting twine, is provided with video frequency collection card in terminal; In auxiliary unit, be provided with multimedia equipment; Wherein, communications satellite is connected with exterior aerial in the satellite sending unit by wireless transmission, satellite modem in the satellite sending unit is connected with multimedia equipment in the auxiliary unit by netting twine, and the audio frequency receiving terminal of looking in the main station unit is connected with terminal in looking the audio collection processing unit by the video line line.
Its direct broadcasting satellite method is: adopt satellite transmits far-end video/audio signal, by video terminal, capture card and server, it is live to utilize terrestrial network to carry out at last, makes network direct broadcasting not have region again, and concrete grammar is:
The first step: deployable antenna also makes antenna and satellite successful connection;
Second step: judge whether satellite signal quality can satisfy the transmission needs of video, audio frequency, under the 512K bandwidth situation, the passback quality reaches about 10dB, picture quality can guarantee smoothness substantially, and then signal quality is enough good, looks audio collection by the multimedia equipment of far-end, convert the signal that collects to digital signal through satellite modem, send on the satellite by electromagnetic mode, receiving center receives this signal via satellite, is forwarded to satellite receive center; If signal quality is good inadequately, then wait for operation;
The 3rd step: the digital signal that receives is separated be pressed into video/audio signal by looking the audio frequency receiving terminal,, put through the IP of satellite receive center video terminal, carry out video and audio communication with it by ICP/IP protocol; If can't be connected, then wait for operation with the satellite receive center video terminal;
The 4th step: utilize existing " Media encoder " software to receive on the terminal of video frequency collection card to consider oneself as audio interface to receive the signal of terminal being equipped with, look audio collection, shorten the signal pressure that receives into " H.263 " or " H.264 " form, see that on this software IMAQ effect, video/audio smoothness get final product;
The 5th step: will compress good video/audio signal and utilize computer server to send to the INTERNET port of appointment by netting twine; If video/audio signal can't send to the INTERNET port of appointment, then wait for operation;
The 6th step: the user logs on the INTERNET port described in the 5th step can carry out the network program request.
The present invention is by two-way communication, and the employing downlink channel direct construction network mode reaches the purpose of high speed data transfer.So-called direct construction network mode be meant the electromagnetic wave that gets off from satellite via satellite receiving element convert to can be in the general data of transmission over networks.Data flow among the present invention, promptly the IP packet is converted to DVB-S via the main website end
Standard (the standard of China Broadcast ﹠ Television trade information transmission, be Digital Video Broadcasting-Satellite, the digital broadcasting satellite system standard) data, after modulating, be sent to satellite with the electromagnetic wave form, by the satellite receiving element electromagnetic wave denoising that receives is amplified then and be reduced into the initial IP packet, carry out IMAQ by video line and capture card again, will look audio frequency by server at last and carry out network direct broadcasting.
Described main station unit comprises communications satellite, and satellite receive center is looked the audio frequency receiving terminal; Satellite receive center receives the Radio Satellite signal that sends from communications satellite, and satellite receive center is connected with netting twine with video and audio terminal.
Described satellite sending unit comprises satellite modem, exterior aerial, feed and power amplifier; This three is connected in series successively by the wire signal feeder line.
The described audio collection processing unit of looking comprises video frequency collection card, terminal, computer server, INTERNET; Video frequency collection card is inserted in the terminal PCI groove, and terminal carries out network with computer server and is connected, and computer server inserts INTERNET by netting twine.
Described auxiliary unit comprises video-audio repeating equipment, also finally is connected with satellite modem with netting twine by recombination line or the interconnection of S terminal line.
Beneficial effect: beneficial effect of the present invention specifically is included under the condition that does not have terrestrial network, adopts the satellite transmits video/audio signal, by video terminal, capture card and server, makes network direct broadcasting not have region again; The communication mode of world looped network makes that the network direct broadcasting mode is more complete, and is wider, freer.
Description of drawings
Fig. 1 is a structure drawing of device of the present invention.Wherein have: main station unit 1, communications satellite 11, satellite receive center 12 is looked audio frequency receiving terminal 13; Satellite sending unit 2, satellite modem 21, exterior aerial 22, feed and power amplifier 23; Look audio collection processing unit 3, video frequency collection card 31, terminal 32, computer server 33, INTERNET network 34; Auxiliary unit 4, multimedia equipment 41.
Fig. 2 is a direct broadcasting satellite method flow diagram of the present invention.
Embodiment:
This specific embodiment combination technology scheme and accompanying drawing describe in further detail practical application of the present invention.
As shown in Figure 1: this device comprises main station unit 1, satellite sending unit 2, looks audio collection processing unit 3, auxiliary unit 4; In main station unit 1, satellite receive center 12 is connected with communications satellite 11 by wireless transmission, satellite receive center 12 by netting twine with look audio frequency receiving terminal 13 and be connected; In satellite sending unit 2, power amplifier 23 is connected with satellite modem 21 by coaxial cable, and the input of power amplifier 23 is connected with exterior aerial 22; In looking audio collection processing unit 3, computer server 33 is connected with INTERNET network 34, terminal 32 respectively by netting twine, is provided with video frequency collection card 31 in terminal 32; In auxiliary unit 4, be provided with multimedia equipment 41; Wherein, communications satellite 11 is connected with exterior aerial 22 in the satellite sending unit 2 by wireless transmission, satellite modem 21 in the satellite sending unit 2 is connected with multimedia equipment 41 in the auxiliary unit 4 by netting twine, and the audio frequency receiving terminal 13 of looking in the main station unit 1 is connected with terminal 32 in looking audio collection processing unit 3 by the video line line.Wherein satellite sending unit 2 is carried out satellite-signal transmission to main station unit 1, and main station unit 1 is by looking tone frequency channel wire and looking audio collection processing unit 3 and link to each other, and auxiliary unit 4 links to each other with satellite sending unit by netting twine;
Practical application hardware environment of the present invention is as follows:
Main station unit 1 is specially: the A9780 main station unit of Alcatel company, adopt the electromagnetic wave of Ku wave band between this unit and the satellite, the agreement of abideing by DVB-S communicates, and uses the Internet between this unit and the message transmission center simultaneously, abides by ICP/IP protocol and communicates;
Communications satellite 11: No. four satellites in Asia;
The satellite-transmission gear that satellite receive center overlaps based on DVB-S at 12: one;
Video and audio terminal 13:Polycom7000;
Satellite modem 21:EMS 4100;
1.2 meters antennas of exterior aerial 22:Andrew;
Power amplifier 23:zinwell 2W power amplifier;
Video frequency collection card 31: adopt Osprey-100;
Terminal 32: the Windows 2000 Professional component computers that Media encoder is housed;
Computer server 33: Windows 2003 Server component computers are housed,
INTERNET 34: the network of public network port address,
Multimedia equipment 41:polycom7000.
Its direct broadcasting satellite method is to adopt satellite transmits far-end video/audio signal, and by video terminal, capture card and server, it is live to utilize terrestrial network to carry out at last, makes network direct broadcasting not have region again, and concrete grammar is:
The first step: deployable antenna also makes antenna and satellite successful connection;
Second step: judge whether satellite signal quality can satisfy the transmission needs of video, audio frequency, under the 512K bandwidth situation, the passback quality reaches about 10dB, picture quality can guarantee smoothness substantially, then signal quality is enough good, multimedia equipment 41 by far-end is looked audio collection, convert the signal that collects to digital signal through satellite modem 21, send on the satellite by electromagnetic mode, receiving center receives this signal via satellite, is forwarded to satellite receive center; If signal quality is good inadequately, then wait for operation;
The 3rd step: the digital signal that receives is separated be pressed into video/audio signal by looking audio frequency receiving terminal 13,, put through the IP of satellite receive center video terminal, carry out video and audio communication with it by ICP/IP protocol; If can't be connected, then wait for operation with the satellite receive center video terminal;
The 4th step: on the terminal 32 that video frequency collection card 31 is housed, utilize existing " Mediaencoder " software to receive to consider oneself as audio interface to receive the signal of terminal, look audio collection, shorten the signal pressure that receives into " H.263 " or " H.264 " form, see that on this software IMAQ effect, video/audio smoothness get final product;
The 5th step: will compress good video/audio signal and utilize computer server 33 to send to the INTERNET port of appointment by netting twine; If video/audio signal can't send to the INTERNET port of appointment, then wait for operation;
The 6th step: the user logs on the INTERNET port described in the 5th step can carry out the network program request.
Claims (2)
1. the video and audio frequency signal satellite direct broadcasting device of a non-far end ground network is characterized in that this device comprises main station unit (1), satellite sending unit (2), looks audio collection processing unit (3), auxiliary unit (4); In main station unit (1), satellite receive center (12) is connected with communications satellite (11) by wireless transmission, satellite receive center (12) by netting twine with look audio frequency receiving terminal (13) and be connected; In satellite sending unit (2), power amplifier (23) is connected with satellite modem (21) by coaxial cable, and the input of power amplifier (23) is connected with exterior aerial (22); In looking audio collection processing unit (3), computer server (33) is connected with INTERNET network (34), terminal (32) respectively by netting twine, is provided with video frequency collection card (31) in terminal (32); In auxiliary unit (4), be provided with multimedia equipment (41); Wherein, communications satellite (11) is connected with exterior aerial (22) in the satellite sending unit (2) by wireless transmission, satellite modem (21) in the satellite sending unit (2) is connected with multimedia equipment (41) in the auxiliary unit (4) by netting twine, and the audio frequency receiving terminal (13) of looking in the main station unit (1) is connected with terminal (32) in looking audio collection processing unit (3) by the video line line.
2. the direct broadcasting satellite method of the video and audio frequency signal satellite direct broadcasting device of non-far end ground network as claimed in claim 1, it is characterized in that adopting satellite transmits far-end video/audio signal, again by video terminal, capture card and server, it is live to utilize terrestrial network to carry out at last, make network direct broadcasting not have region, concrete grammar is:
The first step: deployable antenna also makes antenna and satellite successful connection;
Second step: judge whether satellite signal quality can satisfy the transmission needs of video, audio frequency, under the 512K bandwidth situation, the passback quality reaches about 10dB, picture quality can guarantee smoothness substantially, then signal quality is enough good, multimedia equipment (41) by far-end is looked audio collection, convert the signal that collects to digital signal through satellite modem (21), send on the satellite by electromagnetic mode, receiving center receives this signal via satellite, is forwarded to satellite receive center; If signal quality is good inadequately, then wait for operation;
The 3rd step: the digital signal that receives is separated be pressed into video/audio signal by looking audio frequency receiving terminal (13),, put through the IP of satellite receive center video terminal, carry out video and audio communication with it by ICP/IP protocol; If can't be connected, then wait for operation with the satellite receive center video terminal;
The 4th step: on the terminal that video frequency collection card (31) are housed (32), utilize existing " Mediaencoder " software to receive to consider oneself as audio interface to receive the signal of terminal, look audio collection, shorten the signal pressure that receives into " H.263 " or " H.264 " form, see that on this software IMAQ effect, video/audio smoothness get final product;
The 5th step: will compress good video/audio signal and utilize computer server (33) to send to the INTERNET port of appointment by netting twine; If video/audio signal can't send to the INTERNET port of appointment, then wait for operation;
The 6th step: the user logs on the INTERNET port described in the 5th step can carry out the network program request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100229881A CN101068346A (en) | 2007-05-29 | 2007-05-29 | Non-far end ground network video and audio frequency signal satellite direct broadcasting device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100229881A CN101068346A (en) | 2007-05-29 | 2007-05-29 | Non-far end ground network video and audio frequency signal satellite direct broadcasting device and method |
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| CN101068346A true CN101068346A (en) | 2007-11-07 |
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| CNA2007100229881A Pending CN101068346A (en) | 2007-05-29 | 2007-05-29 | Non-far end ground network video and audio frequency signal satellite direct broadcasting device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657699A (en) * | 2016-10-10 | 2017-05-10 | 河南省地矿信息中心 | Satellite communication system for remote working area |
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2007
- 2007-05-29 CN CNA2007100229881A patent/CN101068346A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106657699A (en) * | 2016-10-10 | 2017-05-10 | 河南省地矿信息中心 | Satellite communication system for remote working area |
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