CN102665116A - Internet-based video-audio transmission system and video-audio stream distribution method thereof - Google Patents
Internet-based video-audio transmission system and video-audio stream distribution method thereof Download PDFInfo
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Abstract
The invention discloses an Internet-based video-audio transmission system and a video-audio stream distribution method thereof. The system comprises a front-end subsystem, a client subsystem, and a central service platform; besides, the central service platform includes a client application server, a service management subsystem, an alarm service subsystem, an authentication, authorization, accounting (AAA) server, a platform management subsystem, a scheduling subsystem, a storage subsystem, a distribution subsystem, a control service subsystem, and a front-end application server. In addition, the invention also discloses a video-audio stream distribution method of the Internet-based video-audio transmission system. The scheduling subsystem carries out reasonable scheduling on videos and audios of the distribution subsystem according to a current using situation of the system; and the distribution subsystem sends video and audio streams to a client terminal having demand; according to scheduling information of the scheduling subsystem. According to the invention, the system and the method thereof have the following advantages: simultaneous access to and use of a same video-audio stream by multiple users is supported; it is convenient to manage the system; and the application range is wide, and so on.
Description
Technical field
The present invention relates to a kind of audio transmission techniques of looking, particularly a kind ofly look audio transmission system and video-voice frequency flow distribution method thereof based on the Internet.
Background technology
Continuous progress along with electronic information technology; People's communication mode is also in continuous progress; Communication modes such as traditional letter, phone can not satisfy the demand of people's communication far away; Looking audio transmission is a kind of communication mode that people's audio-visual obtains information, and it has advantages such as intuitive, accuracy and high efficiency than other communication mode.Look audio transmission techniques and be widely used in every field such as the international commerce and trade service platform of remote visible, real-time video meeting, online live, long-distance education, tele-medicine, network radio station, look the development of audio transmission techniques and all brought great influence for people's live and work.The framework of looking audio transmission system that uses in the prior art all is to adopt the single-mode of front end to client; Client is directly looked closely audio coder in the past and is obtained video-voice frequency flow; Can the network of front end video encoding device and access thereof be posed a big pressure when visiting one road video-voice frequency flow simultaneously for a plurality of clients; Form easily bottleneck, and all relatively sealings of the homogeneous system of using at present, can't be directly and client's dedicated system integrated.
Summary of the invention
The shortcoming that the objective of the invention is to overcome prior art provides a kind of and supplies a plurality of clients to visit, use same road video-voice frequency flow simultaneously, and can not cause the audio transmission system of looking based on the Internet of bottleneck with not enough.
Another object of the present invention with, a kind of video-voice frequency flow distribution method of looking audio transmission system based on the Internet is provided.
In order to reach above-mentioned first purpose, the present invention adopts following technical scheme:
A kind of audio transmission system of looking based on the Internet of the present invention comprises front terminal system, client-end subsystem, the Internet, also comprises center service platform; Said center service platform comprises
Front end application server: be used for safeguards system safety and front terminal system interaction information and forwarding information;
AAA (Authentication, Authorization, Accounting, checking, mandate, book keeping operation) server: be used to receive the message that withdraws from, receive also to handle and charge, after authentication command, return corresponding result from client end application server;
Storage subsystem: be used for the record video recording, and the video recording of record is managed, store the video recording that writes down into hard disk; Processing changes into video-voice frequency flow with video file and is uploaded to distribution subsystem from the playing back videos order of client end application server, is distributed to client-end subsystem by distribution subsystem;
Control service subsystem: be used to accept control information, be transmitted to front end application server then from client end application server; The processing result information that acceptance is returned by front end application server, and be transmitted to client end application server;
Distribution subsystem: be used to handle video/audio signal, be transmitted to corresponding client-end subsystem according to schedule information from the front terminal system; Be used to handle video recording order and timing alarm video recording from client end application server, and the notice storage subsystem, simultaneously video-voice frequency flow is distributed to storage subsystem;
Alerting service subsystem: be used to accept alarm, notify the related personnel, and be distributed to the current online user who possesses corresponding authority with Email, short message way from front end application server; Accept the control of warning information cancellation; The new warning information of not checking is pushed to newly to reach the standard grade has the right to limit the use of the family; And support the inquiry of warning information and browse;
Platform management subsystem: be used to realize network management, log management and system management;
Business management subsystem: be used to handle the business relevant, provide client-end subsystem to look the local storage of audio frequency with the platform management subsystem; Provide user account, password to step on the control of authority interface; The setting of multistage zone, mechanism is provided; Be provided for the service management interface of opening an account and nullifying;
Scheduler subsystem: be used for the video-voice frequency flow of distribution subsystem being carried out rational management according to active client subsystem operating position; Reception is looked audio request order by what client-end subsystem sent to client end application server, and will look the audio request order and send to front end application server; Operating position according to current system requires the front terminal system to upload video-voice frequency flow;
Client end application server: be used to transmit the access authentication request of client-end subsystem, keep watch on the situation that withdraws from that inserts client-end subsystem and produce and withdraw from message; Significant data in client-end subsystem passback extent of competence; Be used to transmit client-end subsystem request, instruction and message and give target device; Return the operating result that instruction is transmitted to the user; Receive and handle operational order, submit the system journal of platform management subsystem operations to from client-end subsystem;
Business management subsystem, alerting service subsystem, platform management subsystem, scheduler subsystem, control service subsystem and aaa server are connected with front end application server, client end application server, distribution subsystem and storage subsystem signal respectively; Said front end application server is connected with the front terminal system signal; The front terminal system is connected with the client-end subsystem signal; Client-end subsystem is connected with the client end application server signal, and said storage subsystem, front terminal system and client-end subsystem are connected with distribution subsystem respectively.
Preferably, said front terminal system is connected with center service platform through the Internet respectively with client-end subsystem, and said client-end subsystem is used to show can provide the front terminal of service system in the respective regions, the front terminal system is carried out control operation.
Preferably, said the Internet is the network that carries based on IP (Internet Protocol, the agreement that interconnects between the network).
Preferably, said front terminal system comprises video camera, The Cloud Terrace, looks audio server and warning input/output unit, is used for the obtaining of audiovisual information, warning information, control information, buffer memory, coding and forwarding.
Preferably; That said client-end subsystem comprises is real-time, decodes and plays device, subscriber administration interface, service fulfillment and administration interface, system maintenance interface and the alarm indication interface of historical video/audio; Be used for browsing video and audio frequency, described client-end subsystem comprises one or more clients.
Preferably, all realize communication between said business management subsystem, alerting service subsystem, platform management subsystem, scheduler subsystem, control service subsystem, aaa server, distribution subsystem, storage subsystem, front end application server and the client end application server through middleware.
In order to reach above-mentioned second purpose, the present invention adopts following technical scheme:
A kind of video-voice frequency flow distribution method of looking audio transmission system of the present invention based on the Internet, concrete step is following:
(1) user proposes to look audio frequency through client and uses request, and client is looked the audio request order through the Internet to the client end application server transmission of center service platform;
(2) scheduler subsystem receives by what client sent to client end application server and looks the audio request order; And will look audio request order and send to front end application server, front end application server will be looked the audio request order through the Internet and will be transmitted to the front terminal system;
(3) the front terminal system receives and to look the audio request order, judges that receive identical look the audio request order and whether have more than 2:
Not, promptly the front terminal system does not receive only one when looking the audio request order, directly video-voice frequency flow is sent to by the front terminal system and sends the client of looking the audio request order;
Be, promptly the front terminal system receives more than 2 identically when looking the audio request order, and the front terminal system uploads the required video-voice frequency flow of client to distribution subsystem;
(4) distribution subsystem receives the video-voice frequency flow from the front terminal system; And according to current system operating position the video-voice frequency flow of distribution subsystem is carried out rational management by scheduler subsystem; Distribution subsystem is transmitted to video-voice frequency flow according to the schedule information of scheduler subsystem and sends all clients of looking the audio request order, and video-voice frequency flow is sent to storage subsystem deposits.
Preferably, said video-voice frequency flow adopts MPEG4/H.264 Streaming Media transmission means.
Preferably, the application program of said video-voice frequency flow adopts SDK (Software Development Kit, SDK) second development interface.
The present invention has following advantage and effect with respect to prior art:
(1) the present invention adopts front end video encoding device to send one road real-time video/audio to central platform; Be responsible for real-time video-voice frequency flow is distributed to the client of a plurality of requests by the distribution subsystem of central platform; Therefore can there be multi-client to visit one road video-voice frequency flow simultaneously at one time, provides jumbo user to insert and request, support to use on a large scale; Can not cause the bottleneck of system, improve the availability of system.
(2) the present invention adopts the SDK second development interface to carry out secondary development to looking audio application; Programming has brought very big convenience to audio-video capture; And the SDK second development interface that adopts has very strong adaptive capacity, can satisfy the various development requirements of looking voice applications, can with the existing information system integration of client-end subsystem; The interaction of the data of realization and client-end subsystem makes up the integrated information application platform.
(3) subsystem of looking the audio transmission system use of the present invention is complete modularized design, can realize complete distributed deployment through network, has improved the extensibility of system greatly.
(4) the present invention has adopted the MPEG4/H.264 streaming media transmission technique; Wherein stream media technology is to be kept at complete image and voice data on the Website server through after the processed compressed, while the user can download the information of obtaining, thereby need not watching after the whole compressed file download again; Saved user's time; MPEG4/H.264 is a kind of high performance video coding and decoding technology, has the very high data compression ratio image smooth with having high-quality, through the video data of MPEG4/H.264 compression; In network transmission process needed bandwidth still less, also more economically.
(5) the present invention has adopted middleware Technology to realize the communication between the whole flat module, and emphasis has solved the cooperation problem between each module, has also reduced the workload of maintenance, operation and the management of system simultaneously.
(6) audio transmission system of looking of the present invention can use on a lot of fields widely; As look the international commerce and trade service system of audio conferencing, online live, long-distance education, tele-medicine, network radio station and remote visible in real time; Wherein on the international commerce and trade service system of remote visible; Look audio transmission system through this, the international buyer can Real-time and Dynamic understand and grasp the actual conditions of domestic production producer, thereby reduces both sides' operation cost greatly.
Description of drawings
Fig. 1 is the composition frame chart that the present invention looks audio transmission system.
Fig. 2 is the logic diagram that the present invention looks audio transmission system.
Fig. 3 is the flow chart of video-voice frequency flow distribution of the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but execution mode of the present invention is not limited thereto.
Embodiment
As shown in Figure 1, a kind of audio transmission system of looking based on the Internet comprises front terminal system, client-end subsystem, the Internet, center service platform; Center service platform comprises
Front end application server: be used for safeguards system safety and front terminal system interaction information and forwarding information;
Aaa server: be used to receive the message that withdraws from, receive and handle charge information from client end application server; After authentication command, return corresponding result, as license to client end application server;
Storage subsystem: after receiving the video recording starting command, start corresponding video recording service, the record video recording; Video recording is stored in the hard disk, the video recording of record is managed, make things convenient for system to find the video recording that needs according to multiple retrieval modes such as time, place, incidents; Processing changes into video-voice frequency flow with video file and is uploaded to distribution subsystem from the playing back videos order of client end application server, is distributed to client-end subsystem by distribution subsystem;
Control service subsystem: be used to accept control information, be transmitted to front end application server then from client end application server; The processing result information that acceptance is returned by front end application server, and be transmitted to client end application server;
Distribution subsystem: be used to handle video/audio signal, be transmitted to corresponding client-end subsystem according to schedule information from the front terminal system; Be used to handle video recording order and timing alarm video recording from client end application server, and the notice storage subsystem, simultaneously video-voice frequency flow is distributed to storage subsystem;
Alerting service subsystem: be used to accept alarm, notify the related personnel, and be distributed to the current online user who possesses corresponding authority with Email, short message way from front end application server; Accept the control of warning information cancellation; The new warning information of not checking is pushed to newly to reach the standard grade has the right to limit the use of the family; And support the inquiry of warning information and browse;
Platform management subsystem: be used to realize network management, log management and system management;
Business management subsystem: be used to handle the business relevant, provide client-end subsystem to look the local storage of audio frequency with the platform management subsystem; Provide user account, password to step on the control of authority interface; The setting of multistage zone, mechanism is provided; Be provided for the service management interface of opening an account and nullifying;
Scheduler subsystem: scheduler subsystem receives by what client-end subsystem sent to client end application server and looks the audio request order; And will look audio request order and send to front end application server, require the front terminal system to upload video-voice frequency flow according to current system operating position through front end application server; According to active client subsystem user demand situation the video-voice frequency flow of distribution subsystem is carried out rational management;
Client end application server: be used to transmit the access authentication request of client-end subsystem, keep watch on the situation that withdraws from that inserts client-end subsystem and produce and withdraw from message; Significant data in client-end subsystem passback extent of competence; Be used to transmit client-end subsystem request, instruction and message and give target device, be provided with like the operation of forwarding The Cloud Terrace, parameter etc.; Operating result to client-end subsystem passback instruction forwarding; Receive and handle various operational orders, submit the system journal of platform management subsystem operations to from client-end subsystem.
Be illustrated in figure 2 as the logic diagram that the present invention looks audio transmission system; Wherein business management subsystem, alerting service subsystem, platform management subsystem, scheduler subsystem, control service subsystem and aaa server are connected with front end application server, client end application server, distribution subsystem and storage subsystem signal respectively; Front end application server is connected with the front terminal system signal; The front terminal system is connected with the client-end subsystem signal; Client-end subsystem is connected with the client end application server signal, and storage subsystem, front terminal system and client-end subsystem are connected with distribution subsystem respectively.
The front terminal system is connected with center service platform through the Internet respectively with client-end subsystem, and client-end subsystem is used to show can provide the front terminal of service system in the respective regions, the front terminal system is carried out control operation.
The network of the Internet of using in the system for carrying based on IP makes the reliability of transmission system and fail safe all guarantee to some extent.
The front terminal system is used for the obtaining of audiovisual information, warning information, control information, buffer memory, coding, forwarding, comprises video camera, The Cloud Terrace, looks audio server and warning input/output unit etc.Wherein important warning information is mainly from the warning of I/O serial ports with look audio server and detect the warning that produces based on image motion.
That client-end subsystem comprises is real-time, decodes and plays device, subscriber administration interface, service fulfillment and administration interface, system maintenance interface and the alarm indication interface of historical video/audio, shows the front terminal system that service can be provided in the respective regions; Video-voice frequency flow to receiving carries out decodes and plays; Support is to control operation, video recording and the playback of front terminal system; Receive the warning message linkage; Provide the state of system equipment to browse, operation interface such as parameter setting, initialization; System event inquiry and browse window are provided; Warning message inquiry and browse window are provided, realize browsing of video and audio frequency.Client-end subsystem comprises one or more clients.
The front terminal system sends the video/audio signal that collects, audio signal to the video encoding device, and the video encoding device is the analog signal sampling that receives, digitlization and processed compressed, and is encapsulated in the IP message frame; The video encoding device will be encapsulated in video/audio in the IP message frame sends center service platform to through an IP tunnel distribution subsystem or client-end subsystem through IP network; Center service platform is distributed to the audiovisual information of front terminal system through IP network the client of request.
All realize communication between business management subsystem in the center service platform of the present invention, alerting service subsystem, platform management subsystem, scheduler subsystem, control service subsystem, aaa server, distribution subsystem, storage subsystem, front end application server and the client end application server through middleware; The middleware Technology emphasis has solved the cooperation problem between each module, has reduced the workload of maintenance, operation and the management of system.
Be illustrated in figure 3 as a kind of video-voice frequency flow distribution method of looking audio transmission system based on the Internet of the present invention, concrete step is following:
(1) user proposes to look audio frequency through client and uses request, and client is looked the audio request order through the Internet to the client end application server transmission of center service platform;
(2) scheduler subsystem receives by what client sent to client end application server and looks the audio request order; And will look audio request order and send to front end application server, front end application server will be looked the audio request order through the Internet and will be transmitted to the front terminal system;
(3) the front terminal system receives and to look the audio request order, judges that receive identical look the audio request order and whether have more than 2:
Not, promptly the front terminal system does not receive only one when looking the audio request order, directly video-voice frequency flow is sent to by the front terminal system and sends the client of looking the audio request order;
Be, promptly the front terminal system receives more than 2 identically when looking the audio request order, and the front terminal system uploads the required video-voice frequency flow of client to distribution subsystem;
(4) distribution subsystem receives the video-voice frequency flow from the front terminal system; And according to current system operating position the video-voice frequency flow of distribution subsystem is carried out rational management by scheduler subsystem; Distribution subsystem is transmitted to video-voice frequency flow according to the schedule information of scheduler subsystem and sends all clients of looking the audio request order, and video-voice frequency flow is sent to storage subsystem deposits.
Video-voice frequency flow of the present invention adopts MPEG4/H.264 Streaming Media transmission means in transmission course; Wherein stream media technology is to be kept at complete image and voice data on the Website server through after the processed compressed; The user can be while downloading the information of obtaining, thereby watch after need not whole compressed file downloaded again, and saved user's time; MPEG4/H.264 has the very high data compression ratio image smooth with having high-quality; Through the video data of MPEG4/H.264 compression, in network transmission process needed bandwidth still less, also more economically.
The application program of video-voice frequency flow adopts the SDK second development interface that it is carried out secondary development; Programming has brought very big convenience to audio-video capture; And the SDK second development interface that adopts has very strong adaptive capacity, can satisfy the various development requirements of looking voice applications, can with the existing information system integration of client-end subsystem; The interaction of the data of realization and client-end subsystem makes up the integrated information application platform.
The foregoing description is a preferred implementation of the present invention; But execution mode of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. the audio transmission system of looking based on the Internet comprises front terminal system, client-end subsystem, the Internet, it is characterized in that: also comprise center service platform; Said center service platform comprises
Front end application server: be used for safeguards system safety and front terminal system interaction information and forwarding information;
Aaa server: be used to receive the message that withdraws from, receive and handle and charge, after authentication command, return corresponding result from client end application server;
Storage subsystem: be used for the record video recording, and the video recording of record is managed, store the video recording that writes down into hard disk; Processing changes into video-voice frequency flow with video file and is uploaded to distribution subsystem from the playing back videos order of client end application server, is distributed to client-end subsystem by distribution subsystem;
Control service subsystem: be used to accept control information, be transmitted to front end application server then from client end application server; The processing result information that acceptance is returned by front end application server, and be transmitted to client end application server;
Distribution subsystem: be used to handle video/audio signal, be transmitted to corresponding client-end subsystem according to schedule information from the front terminal system; Be used to handle video recording order and timing alarm video recording from client end application server, and the notice storage subsystem, simultaneously video-voice frequency flow is distributed to storage subsystem;
Alerting service subsystem: be used to accept alarm, notify the related personnel, and be distributed to the current online user who possesses corresponding authority with Email, short message way from front end application server; Accept the control of warning information cancellation; The new warning information of not checking is pushed to newly to reach the standard grade has the right to limit the use of the family; And support the inquiry of warning information and browse;
Platform management subsystem: be used to realize network management, log management and system management;
Business management subsystem: be used to handle the business relevant, provide client-end subsystem to look the local storage of audio frequency with the platform management subsystem; Provide user account, password to step on the control of authority interface; The setting of multistage zone, mechanism is provided; Be provided for the service management interface of opening an account and nullifying;
Scheduler subsystem: be used for the video-voice frequency flow of distribution subsystem being carried out rational management according to active client subsystem operating position; Reception is looked audio request order by what client-end subsystem sent to client end application server, and will look the audio request order and send to front end application server; Operating position according to current system requires the front terminal system to upload video-voice frequency flow;
Client end application server: be used to transmit the access authentication request of client-end subsystem, keep watch on the situation that withdraws from that inserts client-end subsystem and produce and withdraw from message; Significant data in client-end subsystem passback extent of competence; Be used to transmit client-end subsystem request, instruction and message and give target device; Return the operating result that instruction is transmitted to the user; Receive and handle operational order, submit the system journal of platform management subsystem operations to from client-end subsystem;
Said business management subsystem, alerting service subsystem, platform management subsystem, scheduler subsystem, control service subsystem and aaa server are connected with front end application server, client end application server, distribution subsystem and storage subsystem signal respectively; Said front end application server is connected with the front terminal system signal; The front terminal system is connected with the client-end subsystem signal; Client-end subsystem is connected with the client end application server signal, and said storage subsystem, front terminal system and client-end subsystem are connected with distribution subsystem respectively.
2. the audio transmission system of looking based on the Internet according to claim 1; It is characterized in that: said front terminal system is connected with center service platform through the Internet respectively with client-end subsystem; Said client-end subsystem is used to show can provide the front terminal of service system in the respective regions, and the front terminal system is carried out control operation.
3. the audio transmission system of looking based on the Internet according to claim 1 and 2 is characterized in that, said the Internet is the network that carries based on IP.
4. the audio transmission system of looking based on the Internet according to claim 1; It is characterized in that: said front terminal system comprises video camera, The Cloud Terrace, looks audio server and warning input/output unit, and said front terminal system is used for the obtaining of audiovisual information, warning information, control information, buffer memory, coding and forwarding.
5. the audio transmission system of looking based on the Internet according to claim 1; It is characterized in that: said client-end subsystem comprises decodes and plays device, subscriber administration interface, service fulfillment and administration interface, system maintenance interface and alarm indication interface real-time, historical video/audio, and described client-end subsystem comprises one or more clients.
6. the audio transmission system of looking based on the Internet according to claim 1 is characterized in that: all realize communication through middleware between said business management subsystem, alerting service subsystem, platform management subsystem, scheduler subsystem, control service subsystem, aaa server, distribution subsystem, storage subsystem, front end application server and the client end application server.
7. the video-voice frequency flow distribution method of looking audio transmission system based on the Internet is characterized in that, specifically may further comprise the steps:
(1) user proposes to look audio frequency through client and uses request, and client is looked the audio request order through the Internet to the client end application server transmission of center service platform;
(2) scheduler subsystem receives by what client sent to client end application server and looks the audio request order; And will look audio request order and send to front end application server, front end application server will be looked the audio request order through the Internet and will be transmitted to the front terminal system;
(3) the front terminal system receives and to look the audio request order, judges that receive identical look the audio request order and whether have more than 2:
Not, promptly the front terminal system does not receive only one when looking the audio request order, directly video-voice frequency flow is sent to by the front terminal system and sends the client of looking the audio request order;
Be, promptly the front terminal system receives more than 2 identically when looking the audio request order, and the front terminal system uploads the required video-voice frequency flow of client to distribution subsystem;
(4) distribution subsystem receives the video-voice frequency flow from the front terminal system; And according to current system operating position the video-voice frequency flow of distribution subsystem is carried out rational management by scheduler subsystem; Distribution subsystem is transmitted to video-voice frequency flow according to the schedule information of scheduler subsystem and sends all clients of looking the audio request order, and video-voice frequency flow is sent to storage subsystem deposits.
8. the video-voice frequency flow distribution method of looking audio transmission system based on the Internet according to claim 7 is characterized in that: said video-voice frequency flow adopts MPEG4/H.264 Streaming Media transmission means.
9. the video-voice frequency flow distribution method of looking audio transmission system based on the Internet according to claim 7 is characterized in that: the application program of said video-voice frequency flow adopts the SDK second development interface.
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Application publication date: 20120912 |