CN102316276A - Signal switching matrix system - Google Patents
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Abstract
The invention discloses a signal switching matrix system, which comprises multiple signal collecting servers, multiple signal distributing servers, an exchange board and a management server, wherein the management server is used for indicating the signal collecting servers to transmit signal to the signal distributing servers, the signal collecting servers are respectively used for receiving the input signal and decapsulating to obtain video/voice frequency coded data stream, the video/voice frequency coded data stream can be transmitted to the signal distributing servers through the exchange board, the signal distributing servers are respectively used for receiving the video/voice frequency coded data stream transmitted by the signal collecting servers to carry out the recoding for the video/voice frequency and the output after being capsulated again. According to the invention, the matrix switching for multiple signals can be carried out.
Description
Technical field
The present invention relates to the multimedia field, be specifically related to a kind of signal switching matrix system.
Background technology
Along with the fast development of multimedia technology and IT technology, related multi-media signal form and the agreement in traditional media and new media field constantly increases.As typical case representative, the multiple Streaming Media signal in the sdi signal of traditional broadcast television industry, new media field and various formatted file in every field all in occupation of the share of different proportion.Form, agreement are all inequality separately owing to these signals; Also there is limitation in the signal that the employed equipment of each link of every field can receive and export; So the signal transformation that exists multiple signal in the field of business is arrived the mutual conversion equipment of Streaming Media, the switching software between Streaming Media etc. such as SDI.
Simultaneously; Inner at the traditional tv platform, the signal routing device that generally uses is cut bank and total control equipment, and these equipment all are with between a plurality of input and output devices; Accomplish the switching and the route of signal according to the mode of matrix; But these equipment are generally all only supported the signal input and output of SDI or CVBS, in today of new media fast development, switch lack scope for their abilities to the route of new media signal.
Summary of the invention
The technical problem that the present invention will solve is how multiple signal to be carried out matrix form to switch.
In order to address the above problem, the invention provides a kind of signal switching matrix system, comprising:
A plurality of signals collecting servers, a plurality of signal distribution service device and switch;
Management server is used to indicate the signal distribution service device forward signal of said signals collecting server to appointment;
Each said signals collecting server is respectively applied for receiving inputted signal, and decapsulation obtains the video encoding data flow; Transmit said video encoding data flow through said switch to the signal distribution service device of said management server appointment;
Each said signal distribution service device is respectively applied for the video encoding data flow that receives the signals collecting server forwards, looks audio frequency recodification and heavily encapsulation back output.
Further, said management server comes the forwarding of control signal acquisition server according to the request of client.
Further, said signals collecting server comprises:
Signal forwarding control module, a plurality of signaling protocol card module and a plurality of forwarding output module;
Said signaling protocol card module directly connects with signal source, is used for carrying out the agreement decapsulation from the signal source receiving inputted signal and to input signal, forms the video encoding data flow;
Said signal forwarding control module is used for according to the instruction of said management server the video encoding data flow of said signaling protocol card module output being forwarded to through said forwarding output module the signal distribution service device of appointment;
Said forwarding output module is set up privately owned connection through said switch with corresponding signal distribution service device, sends to the signal distribution service device of having set up privately owned connection after will coming from the video encoding data flow encapsulation of said signal forwarding control module.
Further, said signaling protocol card module also is used for the base-band data stream that obtains after the decapsulation is encoded.
Further, said signaling protocol card module adopts dongle configuration with the forwarding output module, by said signal forwarding control module institute's dynamic creation and release;
Said signal forwarding control module is meant data flow through the signal distribution service device that said forwarding output module is forwarded to appointment:
Said signal forwarding control module in the time need the video encoding data flow being sent to the signal distribution service device of appointment, forwarding output module of dynamic creation corresponding to the signal distribution service device of this appointment; After setting up privately owned connection between the signal distribution service device of the forwarding output module of completion to be created and correspondence, the video encoding data flow after the decapsulation of said signaling protocol card module is transferred to this forwarding output module send.
Further, said management server comprises:
The SIGNALS MANAGEMENT unit is used for the input signal of current all signals collecting servers is managed;
The server admin unit is used for the configuration information of the target device of passive configuration of devices information of supervisory signal acquisition server and signal distribution service device; The action message of supervisory signal acquisition server and signal distribution service device; When there being many signals collecting servers, number of signals, the processor/Memory Load of these signals collecting servers are kept watch on;
Transmit control unit, be used for instruction or pre-defined rule according to client, the index signal acquisition server is forwarded to the video encoding data flow signal distribution service device of appointment;
The client-side interface unit is used to provide standard interface to supply client call.
Further, said signal distribution service device comprises:
Separate a plurality of passages;
Each said passage comprises an input submodule, one or more output sub-module;
Said input submodule is used to receive the video encoding data flow that the signals collecting server is transmitted through switch; Video encoding data flow to receiving is carried out decapsulation; And to after the decapsulation look audio frame number according to or flow data carry out Base-Band Processing, form and to look the audio base-band data flow;
Said output sub-module is used for input submodule output looked the audio base-band data flow; According to the needed media formats of target device of this signal switching matrix system with the signaling protocol encapsulation format is recoded and heavily encapsulation, with recode and heavily the data flow branch after the encapsulation send out.
Further; Said signals collecting server also was used for before transmitting the video encoding data flow, earlier the pairing metadata information of this video encoding data flow was reached the timestamp information of wherein looking the audio frame number certificate and was sent to the signal distribution service device through said switch; Said metadata information comprises the media coding format information of this video encoding data flow.
Further, said input submodule comprises:
Signal receives decapsulation unit, looks audio decoding unit and frame losing compensation and sound picture lock unit;
Said signal receives the video encoding data flow after decapsulation unit is used to receive the encapsulation that comes from the signals collecting server; And the video encoding data flow after this encapsulation carried out decapsulation, and the media coding format information in the metadata information that receives exported to look audio decoding unit;
The said audio decoding unit of looking is used for making up video-audio decoder according to said media coding format information; The video encoding data flow that said signal is received decapsulation unit output is looked the audio base-band data through the decoder output of decoding, and is sent to frame losing compensation and sound picture lock unit;
Said frame losing compensation and sound are drawn lock unit and are used to provide a video single frames buffering area and an audio frequency streaming buffer that carries out the instance counting for each output sub-module respectively; Video single frames buffering area is preserved the last frame video requency frame data according to looking audio base-band data-signal frame per second; And receive decapsulation unit from signal and read the timestamp information of looking the audio frame number certificate; Receive the decoded audio base-band data of looking from looking audio decoding unit, supply said output sub-module extraction audio frame number certificate according to the consistent principle of timestamp information of the video requency frame data of the timestamp information of audio frame number certificate and current extraction.
Further, said output sub-module comprises:
Frame per second timer, frame per second converter unit, video encoding unit, output adaptation unit and output inserter unit;
Said frame per second converter unit module is used for being provided with according to the media formats of target device the frequency of trigger frame rate timer, reads the last frame video requency frame data from said video single frames buffering area when every frame per second timer triggers;
Said video encoding unit carries out breadth convergent-divergent and recodification according to the media formats of target device to video requency frame data, and the audio frame number certificate is resampled and recodes;
Said output adaptation unit is used to the employed signaling protocol encapsulation format of target device and searches suitable output inserter unit and instantiation and parameter is set, will come from simultaneously video encoding unit output look audio compression data, or the audio base-band data of looking that come from the frame per second converter unit deliver to the output inserter unit;
The corresponding a kind of target device in said each output inserter unit is used for looking the audio base-band data or looking and export to pairing target device after audio compression data heavily encapsulates through corresponding signaling protocol encapsulation format.
Technical scheme of the present invention can realize that various signals (Streaming Media signal, sdi signal, file, proprietary protocol signal etc.) are carried out matrix form to be switched; The input and output of matrix are disposed according to clustered, can increase according to cluster member quantity geometric ratio within the specific limits; Can substitute the total control cut bank in the traditional tv platform, realize the signal routing function, be applicable to application scenarioss such as signal transformation and signal route, remedy the technological gap of legacy equipment in the multimedia field.
Description of drawings
Fig. 1 is the structural representation of the signal switching matrix system of embodiment one;
Fig. 2 is the structural representation of signals collecting server among the embodiment one;
Fig. 3 is the structural representation of signal distribution service device among the embodiment one;
Fig. 4 is a structural representation of importing submodule among the embodiment one in the signal distribution service device;
Fig. 5 is the structural representation of output sub-module in the signal distribution service device among the embodiment one;
Fig. 6 is the structural representation of management server among the embodiment one.
Embodiment
To combine accompanying drawing and embodiment that technical scheme of the present invention is explained in more detail below.
Need to prove that if do not conflict, each characteristic among the embodiment of the invention and the embodiment can mutually combine, all within protection scope of the present invention.
Embodiment one, a kind of signal switching matrix system, as shown in Figure 1, comprising:
A plurality of signals collecting servers, a plurality of signal distribution service device and switch;
Management server is used to indicate the signal distribution service device forward signal of said signals collecting server to appointment;
Each said signals collecting server is respectively applied for receiving inputted signal, and decapsulation obtains the video encoding data flow; Transmit said video encoding data flow through said switch to the signal distribution service device of said management server appointment;
Each said signal distribution service device is respectively applied for the video encoding data flow that receives the signals collecting server forwards, looks audio frequency recodification and heavily encapsulation back output.
In the present embodiment; Said management server is except transmitting the control said signals collecting server; The server admin request that can also send according to said signals collecting server and said signal distribution service device is configured management to them respectively and signal is managed; Said management server can also come the forwarding of control signal acquisition server according to the request of extraneous client according to the forwarding of pre-configured regular control signal acquisition server.
In the present embodiment; Said signals collecting server is as the signal input part point of said signal switching matrix system; Each signals collecting server can insert the signal source of some at synchronization, and this quantity receives condition restriction such as the management server hardware processor performance and the network bandwidth.All signals collecting servers can be considered a signals collecting server cluster, and in Fig. 1, signals collecting server 1 forms M input signal of said signal switching matrix system to the input signal summation of signals collecting server M in this cluster.
In the present embodiment; Said signal distribution service device is as the signal output part point of said signal switching matrix system; According to the type of target device signal being looked audio frequency recodes; And carry out agreement according to the protocol type of target device support and heavily encapsulate, the output signal after the mode of supporting according to target device then will heavily encapsulate sends to target device; All signals collecting servers can be considered a signal distribution service device cluster, and in Fig. 1, signal distribution service device 1 is exported to the N road that the output signal synthesis of signal distribution service device N constitutes said signal switching matrix system in this cluster.
Signal switching matrix system among Fig. 1 is the matrix of a M * N; Input and output are disposed according to clustered, and end points quantity (M and N value) (is subject to the condition restriction such as disposal ability and the network bandwidth of management server) within the specific limits and can increases according to cluster member quantity geometric ratio.
Generally speaking, said management server can be used with administrative client, and in order to realize standardization, management server can provide unified management interface; Use the operation system (such as performance broadcasting system etc.) of signal switching matrix system can customize the administrative client that meets own requirement; Perhaps client is built in operation system inside; Carry out alternately with management server through management interface, thereby realize control whole signal switching matrix system.
In the present embodiment; Said signals collecting server can also be used for before transmitting the video encoding data flow, earlier with the pairing metadata information of this video encoding data flow and the timestamp information of wherein looking the audio frame number certificate through said switch be sent to the signal distribution service device that will be forwarded to; Said metadata information comprises the media coding format information of this video encoding data flow etc.
In the present embodiment, the modular structure of said signals collecting server is as shown in Figure 2, specifically can comprise signal forwarding control module, a plurality of signaling protocol card module and a plurality of forwarding output module.
(1.1) signaling protocol card module.
Said signaling protocol card module directly connects with signal source, is used for from the signal source receiving inputted signal, and input signal is carried out the agreement decapsulation, forms original video encoding data flow; The confession flow is used.If obtain base-band data stream such as SDI after the decapsulation; Said signaling protocol card module need be encoded to base-band data stream; Look audio compression data stream and can in network, transmit (base-band data stream generally can directly not transmitted because bandwidth is too high) on network to guarantee coding formation.
The function that said signaling protocol card module is mainly accomplished is following:
(a) input signal agreement decapsulation converts various input signals to unified video encoding data flow;
(b) base-band data stream that obtains after the decapsulation is encoded, form the video encoding data flow.
This signaling protocol card module can adopt dongle configuration, to guarantee the extended capability to the signal format that increases newly;
According to the type of signal, this signaling protocol card module can comprise the two kinds of forms of data that " push away (PUSH) " from the signal source data of " pulling out (PULL) " and acknowledge(ment) signal source, and concrete form is relevant with the actual input signal form.
There is higher limit in the quantity of said signaling protocol card module according to disposal ability and the network bandwidth and the package types of server.In this higher limit, said signaling protocol card module quantity can be according to the quantity dynamic change of input signal, and equals the quantity of input signal.When signal source was broken off, its pairing said signaling protocol card module discharged shared system resource with auto-destruct.
(1.2) signal forwarding control module.
Said signal forwarding control module is accepted the control of said management server, according to the indication of said management server, data flow is forwarded to the signal distribution service device of appointment through said forwarding output module; Receiving the operated data flow of signal forwarding control module all is through the video encoding data flow after the decapsulation of signaling protocol card module.
Every signals collecting server only comprises a signal forwarding control module, between signaling protocol card module and forwarding output module, forms function served as bridge.If the employing dongle configuration, then said signaling protocol card module can be by this institute's dynamic creation of signal forwarding control module and release with the forwarding output module.
(1.3) transmit output module.
Said forwarding output module is set up privately owned connection through said switch with corresponding signal distribution service device, sends to the signal distribution service device of having set up privately owned connection after will coming from the video encoding data flow encapsulation of said signal forwarding control module.
The major function of said forwarding output module comprises:
(a) by of the instruction institute dynamic creation of said signal forwarding control module according to said management server; And set up privately owned connection according to the signal distribution service device parameter information (server ip address, port numbers) that comprises in the instruction with the signal distribution service device, can but to be not limited to be that Socket (socket) connects;
(b) receive the video encoding data flow that the signal forwarding control module sends, and be packaged into the reliable network data flow that carries the signal number certificate;
(c) network data flow is sent to the signal distribution service device through Socket, realize the forwarding capability of signal.
In the present embodiment, above-mentioned Socket connects the following target of assurance:
(A) before the formal transmission of beginning video encoding data flow, earlier the pairing metadata information of this video encoding data flow is sent to the echo signal Distributor; Said metadata information comprises the media coding format information of this video encoding data flow;
(B) transmission comes from the timestamp information of looking the audio frame number certificate of signal source simultaneously, to guarantee that information such as frame losing that the echo signal Distributor can go out original video encoding data flow through the video encoding data-flow analysis that receives are to accomplish subsequent operation.
(C) Network Transmission must use TCP etc. to have the transmission means of reliable connection and data check, guarantees that the echo signal Distributor does not need to sort again to wait the integrality of operation and assurance data after receiving the video encoding data flow.
If employing dongle configuration; Then should transmit output module can be by the instruction institute dynamic creation of signal forwarding control module according to said management server; When said management server notification signal acquisition server need arrive certain signal specific Distributor (commencing signal route) with certain road signal forwarding, then need forwarding output module of new establishment and it is carried out parameter configuration.When said management server notification signal acquisition server end signal route or echo signal Distributor initiatively break off connection (server delay machine, network connect break off or the signal distribution service device is initiatively kicked situations such as input signal off); Transmit output module and break off connection with the echo signal Distributor; And notification signal forwarding control module, delete this forwarding output module and discharge the resource that it occupies by the signal forwarding control module.
If the employing dongle configuration, said signal forwarding control module can be meant data flow through the signal distribution service implement body that said forwarding output module is forwarded to appointment:
Said signal forwarding control module in the time need the video encoding data flow being sent to the signal distribution service device of appointment, forwarding output module of dynamic creation corresponding to the signal distribution service device of this appointment; After setting up privately owned connection between the signal distribution service device of the forwarding output module of completion to be created and correspondence, the video encoding data flow after the decapsulation of said signaling protocol card module is transferred to this forwarding output module send.
In the present embodiment, said signal distribution service device is as shown in Figure 3, specifically can comprise:
Separate one or more passages are such as the passage among Fig. 31 to passage n; Each said passage is accomplished the video encoding data flow that will come from the signals collecting server forwards and is decoded, handles all flow processs up to output.The number of active lanes upper limit of the said signal distribution service device of separate unit can be limited by the disposal ability of actual signal Distributor and each passage target device type and quantity jointly; And in the actual deployment environment, the output configuration information of the number of active lanes of every signal distribution service device and each passage is fixed.
Each said passage specifically can comprise an input submodule, one or more output sub-module, such as the output sub-module among Fig. 31 to output sub-module x.
(2.1) input submodule.
Said input submodule is mainly used in and receives the video encoding data flow that the signals collecting server is transmitted through switch; Video encoding data flow to receiving is carried out decapsulation; And to looking audio frame number is decoded according to (perhaps flow data), Base-Band Processing such as synchronous are drawn in frame losing compensation, sound after the decapsulation; Make it to form the standardized audio base-band data flow of looking that meets the source signal media formats, use for said output sub-module.
(2.2) output sub-module:
Said output sub-module is mainly used in looks the audio base-band data flow with input submodule output; According to the needed media formats of the target device of this signal switching matrix system (just will from the equipment of this signal switching matrix system receiving data stream) with the signaling protocol encapsulation format is recoded and heavily encapsulation, with recode and heavily the output signal branch after the encapsulation send out; Target device just can receive said output signal after connecting this output sub-module.
When operate as normal, each passage has and has only an input submodule, and accomplishing the current input signal preliminary treatment is the process of looking the audio base-band data flow.Said passage can also comprise a control submodule, is used for setting up an auxiliary input submodule at handoff procedure, is used to accomplish pre decoding and the preliminary treatment work to new incision signal.After new incision Signal Pretreatment is accomplished, old input submodule before passage will discharge, and newly-established input submodule is linked into each output sub-module, realize the seamless switching of input signal.
Said input submodule is as shown in Figure 4, specifically can comprise: signal receives decapsulation unit, looks audio decoding unit and frame losing compensation and sound picture lock unit.
(2.1.1) signal receives decapsulation unit.
Said signal receives decapsulation unit and is used to receive and comes from the video encoding data flow of signals collecting server after through the encapsulation that Socket connects or other connection sends over; And the video encoding data flow after this encapsulation carried out decapsulation, form with signal forwarding control module output in the signals collecting server reciprocity video encoding data flow; Simultaneously, this signal receives decapsulation unit and is used to receive metadata information, looks audio decoding unit so that the media coding format information in the metadata information is exported to, and makes up the video-audio decoder of coupling;
(2.1.2) look audio decoding unit.
The said audio decoding unit of looking is used for making up video-audio decoder according to said media coding format information; The video encoding data flow that said signal is received decapsulation unit output is looked the audio base-band data through the decoder output of decoding, and is sent to frame losing compensation and sound picture lock unit;
(2.1.3) frame losing compensation and sound are drawn lock unit.
Said frame losing compensation and sound are drawn lock unit and are used to provide a video single frames buffering area and an audio frequency streaming buffer that carries out instance (Sample) counting for each output sub-module respectively; Video single frames buffering area is preserved the last frame video requency frame data according to looking audio base-band data frame per second; Supply output sub-module to extract up-to-date video requency frame data; And cooperate the frame per second timer of output sub-module to accomplish frame rate conversion, realize frame losing compensation video data.Simultaneously; In processing procedure; Receive decapsulation unit from signal and read the timestamp information of looking the audio frame number certificate, receive the decoded audio base-band data of looking from looking audio decoding unit, output sub-module extract audio frame number according to the time; According to the consistent principle of timestamp information of the video requency frame data of the timestamp information of audio frame number certificate and current extraction, realize extracting the sound of the video/audio of output sub-module and draw synchronous correction.
Said output sub-module is as shown in Figure 5, specifically can comprise: frame per second timer (not shown among Fig. 5), frame per second converter unit, video encoding unit, output adaptation unit and output inserter unit.
(2.2.1) frame per second converter unit.
Said frame per second converter unit is used for being provided with according to the media formats of target device the frequency of trigger frame rate timer; Video single frames buffering area from said frame losing compensation and sound picture lock unit when every frame per second timer triggers reads the last frame video requency frame data; Thereby accomplishing the frame per second mapping function (when low frame-rate video is transformed to high frame per second, employs current nearest frame data certainly and mends frame; High frame per second is transformed to when hanging down frame per second, abandons partial frame automatically); When looking the audio base-band data when frame losing occurring, also can realize that frame losing compensates automatically simultaneously according to the mode that low frame per second is transformed to high frame per second.
(2.2.2) video encoding unit.
Said video encoding unit carries out breadth convergent-divergent and recodification according to the media formats of target device to video requency frame data, and audio frame number according to resampling and recoding, is obtained looking audio compression data.If the data after having any one to encode in the output inserter unit then need initialization and the video encoding unit is set, thereby make the audio compression data of looking that it can be behind output adaptation unit output encoder; Otherwise do not need the video encoding unit.
(2.2.3) output adaptation unit.
Said output adaptation unit is used for the output inserter module is managed.In order to guarantee the extensibility of signal distribution service device, convection current output (stating the output inserter unit promptly) can adopt dongle configuration, when the needs increase is supported new agreement, only needs the new output inserter unit of exploitation to get final product.This output adaptation unit promptly is to search suitable output inserter unit and instantiation and parameter is set for the employed signaling protocol encapsulation format of target device, and the audio base-band data of looking of looking audio compression data (if the data after need encoding in the output inserter unit) or directly coming from the frame per second converter unit that will come from video encoding unit output are simultaneously delivered to the output inserter unit.
(2.2.4) output inserter unit.
Said output inserter unit is a dongle configuration; The corresponding a kind of target device in each output inserter unit (the signaling protocol encapsulation format and the media formats that just use corresponding to this target device) is used for looking the audio base-band data or looking and export to corresponding target device after audio compression data heavily encapsulates through corresponding protocol.
The modular structure of management server is as shown in Figure 6, specifically can comprise:
(3.1) SIGNALS MANAGEMENT module is used for the input signal of current all signals collecting servers is managed, and the signal source of signals collecting server can be divided into two types according to the equipment difference: active devices and passive equipment.Active devices just initiatively connects the signals collecting server by this equipment; Passive equipment is meant that the configuration information (function of following server management module) that is issued according to management server by the signals collecting server initiatively gets in touch this equipment.But which kind of mode no matter; After equipment and signals collecting server connect; All a signal source for the signals collecting server; The signals collecting server is notified the SIGNALS MANAGEMENT module to management server with the metadata information of this signal correction, thereby this signal can be by client retrieves and use as a signal of management server, also can be as a signal object through signals collecting server forwards (route) to the signal distribution service device.
(3.2) server management module is used to carry out following management:
(1) configuration information management: the configuration information (the signal distribution service device can be confirmed target code form, target protocol, destination device address information etc. through these configuration informations) of the target device of passive configuration of devices information (the signals collecting server can be related to passive equipment through these configuration informations, obtains signal) and signal distribution service device in the main supervisory signal acquisition server.Management server can be issued to appropriate signal collection/signal distribution service device with relevant configuration information again through the interface interchange of client.
(2) server admin: the action message of supervisory signal acquisition server and signal distribution service device; And can the signals collecting server and the signal distribution service device of current active be returned to client, supply client that these servers are configured management and transmit control.
(3) load balancing management: when there being many signals collecting servers (when constituting cluster); Can monitor the number of signals of these signals collecting servers, processor/Memory Load etc.; When new signal source inserts; Search the lightest signals collecting server of present load and supply to use, guarantee excellent Performance And Reliability.
(3.3) transmit control module; Be used for instruction or pre-defined rule according to client; Indicate said signals collecting server that the video encoding data flow is forwarded to the signal distribution service device of appointment, the signal distribution service device of this appointment is exactly the echo signal Distributor in this is transmitted.
(3.4) client-side interface module is used to provide series of standards interface (such as Web Service interface), supplies client call, accomplishing specific function, these interfaces can comprise following any or appoint several:
Signal is enumerated interface: enumerate all signals of current all signals collecting servers and retrieve the metadata information of these signals;
Signal query interface: search satisfactory signal tabulation according to the keyword (such as information such as title, description, time, places) of metadata information;
Connect the passiveness server interface: find the signals collecting server of an optimum according to the load balancing principle, dispose the parameter information of passive equipment;
Configuration export target interface: find the signal distribution service device of an optimum, the parameter information of configuration purpose marking device according to complicated homeostatic principle;
Signal routing interface: through signal parameter, find the signals collecting server at this signal place, notify this signals collecting server, forward a signal to the echo signal Distributor.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of claim of the present invention.
Claims (10)
1. a signal switching matrix system is characterized in that, comprising:
A plurality of signals collecting servers, a plurality of signal distribution service device and switch;
Management server is used to indicate the signal distribution service device forward signal of said signals collecting server to appointment;
Each said signals collecting server is respectively applied for receiving inputted signal, and decapsulation obtains the video encoding data flow; Transmit said video encoding data flow through said switch to the signal distribution service device of said management server appointment;
Each said signal distribution service device is respectively applied for the video encoding data flow that receives the signals collecting server forwards, looks audio frequency recodification and heavily encapsulation back output.
2. signal switching matrix as claimed in claim 1 system is characterized in that:
Said management server comes the forwarding of control signal acquisition server according to the request of client.
3. signal switching matrix as claimed in claim 1 system is characterized in that said signals collecting server comprises:
Signal forwarding control module, a plurality of signaling protocol card module and a plurality of forwarding output module;
Said signaling protocol card module directly connects with signal source, is used for carrying out the agreement decapsulation from the signal source receiving inputted signal and to input signal, forms the video encoding data flow;
Said signal forwarding control module is used for according to the instruction of said management server the video encoding data flow of said signaling protocol card module output being forwarded to through said forwarding output module the signal distribution service device of appointment;
Said forwarding output module is set up privately owned connection through said switch with corresponding signal distribution service device, sends to the signal distribution service device of having set up privately owned connection after will coming from the video encoding data flow encapsulation of said signal forwarding control module.
4. signal switching matrix as claimed in claim 3 system is characterized in that:
Said signaling protocol card module also is used for the base-band data stream that obtains after the decapsulation is encoded.
5. signal switching matrix as claimed in claim 3 system is characterized in that:
Said signaling protocol card module adopts dongle configuration with the forwarding output module, by said signal forwarding control module institute's dynamic creation and release;
Said signal forwarding control module is meant data flow through the signal distribution service device that said forwarding output module is forwarded to appointment:
Said signal forwarding control module in the time need the video encoding data flow being sent to the signal distribution service device of appointment, forwarding output module of dynamic creation corresponding to the signal distribution service device of this appointment; After setting up privately owned connection between the signal distribution service device of the forwarding output module of completion to be created and correspondence, the video encoding data flow after the decapsulation of said signaling protocol card module is transferred to this forwarding output module send.
6. signal switching matrix as claimed in claim 1 system is characterized in that said management server comprises:
The SIGNALS MANAGEMENT unit is used for the input signal of current all signals collecting servers is managed;
The server admin unit is used for the configuration information of the target device of passive configuration of devices information of supervisory signal acquisition server and signal distribution service device; The action message of supervisory signal acquisition server and signal distribution service device; When there being many signals collecting servers, number of signals, the processor/Memory Load of these signals collecting servers are monitored;
Transmit control unit, be used for instruction or pre-defined rule according to client, the index signal acquisition server is forwarded to the video encoding data flow signal distribution service device of appointment;
The client-side interface unit is used to provide standard interface to supply client call.
7. like each described signal switching matrix system in the claim 1 to 6, it is characterized in that said signal distribution service device comprises:
Separate a plurality of passages;
Each said passage comprises an input submodule, one or more output sub-module;
Said input submodule is used to receive the video encoding data flow that the signals collecting server is transmitted through switch; Video encoding data flow to receiving is carried out decapsulation; And to after the decapsulation look audio frame number according to or flow data carry out Base-Band Processing, form and to look the audio base-band data flow;
Said output sub-module is used for input submodule output looked the audio base-band data flow; According to the needed media formats of target device of this signal switching matrix system with the signaling protocol encapsulation format is recoded and heavily encapsulation, with recode and heavily the data flow branch after the encapsulation send out.
8. signal switching matrix as claimed in claim 7 system is characterized in that:
Said signals collecting server also was used for before transmitting the video encoding data flow, earlier the pairing metadata information of this video encoding data flow was reached the timestamp information of wherein looking the audio frame number certificate and was sent to the signal distribution service device through said switch; Said metadata information comprises the media coding format information of this video encoding data flow.
9. signal switching matrix as claimed in claim 8 system is characterized in that said input submodule comprises:
Signal receives decapsulation unit, looks audio decoding unit and frame losing compensation and sound picture lock unit;
Said signal receives the video encoding data flow after decapsulation unit is used to receive the encapsulation that comes from the signals collecting server; And the video encoding data flow after this encapsulation carried out decapsulation, and the media coding format information in the metadata information that receives exported to look audio decoding unit;
The said audio decoding unit of looking is used for making up video-audio decoder according to said media coding format information; The video encoding data flow that said signal is received decapsulation unit output is looked the audio base-band data through the decoder output of decoding, and is sent to frame losing compensation and sound picture lock unit;
Said frame losing compensation and sound are drawn lock unit and are used to provide a video single frames buffering area and an audio frequency streaming buffer that carries out the instance counting for each output sub-module respectively; Video single frames buffering area is preserved the last frame video requency frame data according to looking audio base-band data-signal frame per second; And receive decapsulation unit from signal and read the timestamp information of looking the audio frame number certificate; Receive the decoded audio base-band data of looking from looking audio decoding unit, supply said output sub-module extraction audio frame number certificate according to the consistent principle of timestamp information of the video requency frame data of the timestamp information of audio frame number certificate and current extraction.
10. signal switching matrix as claimed in claim 9 system is characterized in that said output sub-module comprises:
Frame per second timer, frame per second converter unit, video encoding unit, output adaptation unit and output inserter unit;
Said frame per second converter unit module is used for being provided with according to the media formats of target device the frequency of trigger frame rate timer, reads the last frame video requency frame data from said video single frames buffering area when every frame per second timer triggers;
Said video encoding unit carries out breadth convergent-divergent and recodification according to the media formats of target device to video requency frame data, and the audio frame number certificate is resampled and recodes;
Said output adaptation unit is used to the employed signaling protocol encapsulation format of target device and searches suitable output inserter unit and instantiation and parameter is set, will come from simultaneously video encoding unit output look audio compression data, or the audio base-band data of looking that come from the frame per second converter unit deliver to the output inserter unit;
The corresponding a kind of target device in said each output inserter unit is used for looking the audio base-band data or looking and export to pairing target device after audio compression data heavily encapsulates through corresponding signaling protocol encapsulation format.
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