CN104581036B - Carry out the multi-screen control method and device of video and audio multihead display - Google Patents
Carry out the multi-screen control method and device of video and audio multihead display Download PDFInfo
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- CN104581036B CN104581036B CN201310522621.1A CN201310522621A CN104581036B CN 104581036 B CN104581036 B CN 104581036B CN 201310522621 A CN201310522621 A CN 201310522621A CN 104581036 B CN104581036 B CN 104581036B
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Abstract
The invention discloses the multi-screen control method and device for carrying out video and audio multihead display, wherein, the device includes master control daughter board, exchange and control module, decoding daughter board and video and audio output display daughter board；Master control daughter board receives the outside idsplay order from telecommunication customer end, is sent to exchange and control module；Exchange and control module, receive the outside idsplay order from master control daughter board, and the external data source mark in instruction is sent into decoding daughter board；The video/audio of decoding daughter board feedback is received, video and audio output display daughter board is sent to according to display parameters；Decode daughter board, video encoding data from other multi-screen control devices are received by IP network, receive the external data source mark for coming self-exchange and control module, reception video encoding data corresponding with external data source mark are decoded, decoded video/audio is sent to exchange and control module.The present invention program can realize that the video/audio between two or more multi-screen control device is shared.
Description
Technical field
The present invention relates to video and audio multidisplay technology, more particularly to carry out the multi-screen control method of video and audio multihead display
And device.
Background technology
Referring to Fig. 1, for the multi-screen control device structural representation of existing progress video and audio multihead display, multi-screen control dress
Put including video and audio acquisition module and more screen controller central processing modules, the more connections of screen controller central processing module and display
Wall connects；
The video/audio of Lacal Head End obtains equipment and imaged, by between more screen controller central processing modules
Passage the video/audio of acquisition is sent to video and audio acquisition module；Video and audio acquisition module is by the video/audio of collection
It is sent to more screen controller central processing modules；More screen controller central processing modules are selected, and will be chosen corresponding to passage
Video/audio is sent to video wall and carries out multihead display, and video wall is spliced by polylith display screen.
It is specific such as that the video/audio of front end obtains equipment：Digital hard disc video recorder (DVR, Digital Video
Recorder), web camera (IPC, IP camera) etc. is a variety of, correspondingly, the video and audio number that video and audio acquisition module receives
It is believed that number have it is a variety of, including Video Graphics Array (VGA, Video Graphics Array) signal, digital visual interface (DVI,
Digital Video Interface) signal, Composite Video Baseband Signal (CVBS, Composite Video Broadcast
Signal) etc..
Video and audio multihead display scheme is applied more has a variety of, such as friendship in field of video monitoring, the application scenarios of video monitoring
The scenes such as logical, public place, public security, meeting.
In existing video and audio multihead display scheme, multi-screen control device can only be carried out to the video/audio locally gathered
It has been shown that, limitation are larger.
The content of the invention
The invention provides it is a kind of carry out video and audio multihead display multi-screen control device, the device can realize two with
Video/audio between upper multi-screen control device is shared.
The invention provides it is a kind of carry out video and audio multihead display multi-screen control method, this method can realize two with
Video/audio between upper multi-screen control device is shared.
A kind of multi-screen control device for carrying out video and audio multihead display, the device include master control daughter board, exchange and control mould
Block, decoding daughter board and video and audio output display daughter board；
The master control daughter board, the outside idsplay order from telecommunication customer end is received, be sent to exchange and the control mould
Block, the outside idsplay order include the external data source mark chosen and display parameters；
The exchange and control module, the outside idsplay order from the master control daughter board is received, by outside idsplay order
In external data source mark be sent to the decoding daughter board；The video/audio of the decoding daughter board feedback is received, according to aobvious
Show that parameter is sent to the video and audio output display daughter board；
The decoding daughter board, the video encoding data from other multi-screen control devices are received by IP network, received
External data source from the exchange and control module is identified, and reception video and audio corresponding with external data source mark is compiled
Code data are decoded, and decoded video/audio is sent into the exchange and control module；
The video and audio output display daughter board, the video/audio from the exchange and control module is received, is sent to
Show that wall carries out multihead display, and carry out audio broadcasting；
The multi-screen control device also includes local video and audio collection daughter board, and the local video and audio collection daughter board includes local
Video and audio acquisition module；
The master control daughter board, also receive and instruction is locally displayed from telecommunication customer end, be sent to the exchange and control
Module, local channel mark and the display parameters that instruction is locally displayed and includes choosing；
The exchange and control module, receive and instruction is locally displayed from the master control daughter board, instruction will be locally displayed
In local channel source mark be sent to the local video and audio collection daughter board；Receive the local video and audio acquisition module feedback
Video/audio, be sent to the video and audio output display module according to display parameters；
The local video and audio acquisition module, is acquired to the video/audio from local channel, and reception comes from institute
State to exchange and identified with the local channel of control module, collection is sent to institute with the local channel corresponding video/audio of mark
State exchange and control module.
A kind of multi-screen control method for carrying out video and audio multihead display, this method include：
Master control daughter board receives the outside idsplay order from telecommunication customer end, is sent to exchange and control module, and outside is aobvious
Show that instruction includes external data source mark and the display parameters chosen；
Exchange and control module receives the outside idsplay order from master control daughter board, by the external number in outside idsplay order
Decoding daughter board is sent to according to source mark；
Decode daughter board and the video encoding data from other multi-screen control devices are received by IP network, receive to be selfed
Change and identified with the external data source of control module, reception video encoding data corresponding with external data source mark are carried out
Decoding, decoded video/audio is sent to exchange and control module；
Exchange and control module receives the video/audio that decoding daughter board feeds back, it is defeated to be sent to video and audio according to display parameters
Go out to show daughter board；
Video/audio is sent to display wall and carries out multihead display by video and audio output display daughter board, and is carried out audio and broadcast
Put；
This method also includes：
Master control daughter board receives is locally displayed instruction from telecommunication customer end, is sent to exchange and control module, local aobvious
Show that instruction includes local channel mark and the display parameters chosen；
Exchange and control module receives and instruction is locally displayed from master control daughter board, the local being locally displayed in instruction is led to
Road source mark is sent to the local video and audio acquisition module of local video and audio collection daughter board；
Local video and audio acquisition module is acquired to the video/audio from local channel, is received and is come self-exchange and control
The local channel mark of molding block, collection is sent to exchange and control mould with the local channel corresponding video/audio of mark
Block；
Exchange and control module receives the video/audio that local video and audio acquisition module feeds back, sent according to display parameters
Give video and audio output display daughter board；
Video/audio is sent to display wall and shown by video and audio output display daughter board.
From such scheme as can be seen that being provided with master control daughter board, exchange and control mould in the multi-screen control device of the present invention
Block, decoding daughter board and video and audio output display daughter board；The master control daughter board, receive the outside display from telecommunication customer end and refer to
Order, is sent to the exchange and control module；The exchange and control module, receive the outside display from the master control daughter board
Instruction, the external data source mark in outside idsplay order is sent to the decoding daughter board；Receive the decoding daughter board feedback
Video/audio, be sent to the video and audio output display daughter board according to display parameters；The decoding daughter board, passes through IP network
The video encoding data from other multi-screen control devices are received, receive the external data from the exchange and control module
Source identifies, and reception video encoding data corresponding with external data source mark is decoded, by decoded video and audio
Data are sent to the exchange and control module；The video and audio output display daughter board, video/audio is sent to display wall
Multihead display is carried out, and carries out audio broadcasting.The present invention is extended to multi-screen control device, to be controlled by the multi-screen of local
Device can also check the video/audio of nonlocal multi-screen control device collection, so as to, realize two or more multi-screen control device it
Between video/audio share.
Brief description of the drawings
Fig. 1 is the multi-screen control device structural representation that prior art carries out video and audio multihead display；
Fig. 2 is the multi-screen control system architecture schematic diagram that the present invention carries out video and audio multihead display；
Fig. 3 is the multi-screen control device structural representation that the present invention carries out video and audio multihead display；
Fig. 4 is the multi-screen control device structural representation example that the present invention carries out video and audio multihead display；
Fig. 5 is the method indicative flowchart for the multi-screen control that the present invention carries out video and audio multihead display.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is further described.
With becoming increasingly popular for video monitoring, the scale for implementing video surveillance point constantly expands, the video monitoring dress of setting
Put more and more；More screen controller central processing modules are arranged in different regional extents, when needing to check that different video supervises
, it is necessary to which staff rushes for other video monitoring centers reality from local during the video/audio at control center, i.e. different zones scope
The video monitoring apparatus of respective regions is checked on ground, or carries out telephonic communication to obtain monitoring information, and it implements inconvenience.It is in view of this
Situation, the present invention are extended to multi-screen control device, and nonlocal multi-screen control can be also checked with the multi-screen control device by local
The video/audio of device collection processed, realizes that the video/audio between two or more multi-screen control device is shared；So as to save
Human resources, optimize video monitoring.
Referring to Fig. 2, for the multi-screen control system architecture schematic diagram of present invention progress video and audio multihead display, the system includes
Multiple multi-screen control devices, the exchange of video data is carried out between each multi-screen control device by IP network：In more screen controllers
The video/audio locally gathered is sent to other more screen controller central processing modules by centre processing module by IP network, and
The video/audio from other more screen controller central processing modules is obtained from IP network, display wall is dealt into and is shown.
Referring to Fig. 3, for the structural representation of each multi-screen control device in Fig. 2, it includes master control daughter board, exchange and control mould
Block, decoding daughter board and video and audio output display daughter board；
The master control daughter board, the outside idsplay order from telecommunication customer end is received, be sent to exchange and the control mould
Block, the outside idsplay order include the external data source mark chosen and display parameters；
The exchange and control module, the outside idsplay order from the master control daughter board is received, by outside idsplay order
In external data source mark be sent to the decoding daughter board；The video/audio of the decoding daughter board feedback is received, according to aobvious
Show that parameter is sent to the video and audio output display daughter board；
The decoding daughter board, the video encoding data from other multi-screen control devices are received by IP network, received
External data source from the exchange and control module is identified, and reception video and audio corresponding with external data source mark is compiled
Code data are decoded, and decoded video/audio is sent into the exchange and control module；
The video and audio output display daughter board, the video/audio from the exchange and control module is received, is sent to
Show that wall carries out multihead display, and carry out audio broadcasting.
The backboard of multi-screen control device itself in of the invention, is inserted with exchange and control module also on the slot of backboard
Enter to decode daughter board, master control daughter board and video and audio output display daughter board, display controls from nonlocal multi-screen on display wall to realize
The video/audio of device.
It is preferred that the master control daughter board includes the first communication module and more screen controller central processing modules, the decoding
Daughter board includes the second communication module and video and audio decoder module；As shown in figure 4, it is multi-screen control device structure provided by the invention
Schematic diagram example, the video and audio output display daughter board in figure include multiple video and audio output display modules, and each module is corresponding aobvious
Show one piece of display screen in wall, assume in this example that display wall there are 4 pieces of display screens, each video and audio output display module is received and come from
After exchanging the video/audio with control module, video data therein is sent to corresponding display screen and shown, and will
Voice data is played back by broadcaster；
First communication module, receive the outside idsplay order from telecommunication customer end and instruction is locally displayed, send out
Give more screen controller central processing modules；
More screen controller central processing modules, receive outside idsplay order from first communication module and
Instruction is locally displayed, is sent to the exchange and control module；
Second communication module, the video encoding data from other multi-screen control devices are received by IP network,
It is sent to the video and audio decoder module；
The video and audio decoder module, receives the video encoding data from second communication module, and reception comes from
The external data source of the exchange and control module identifies, video encoding number corresponding with external data source mark to reception
According to being decoded, decoded video/audio is sent to the exchange and control module.
It is preferred that the multi-screen control device also includes local video and audio collection daughter board, the local video and audio collection daughter board
Including local video and audio acquisition module；
The master control daughter board, also receive and instruction is locally displayed from telecommunication customer end, be sent to the exchange and control
Module, local channel mark and the display parameters that instruction is locally displayed and includes choosing；
The exchange and control module, receive and instruction is locally displayed from the master control daughter board, instruction will be locally displayed
In local channel source mark be sent to the local video and audio acquisition module；Receive the local video and audio acquisition module feedback
Video/audio, be sent to the video and audio output display daughter board according to display parameters；
The local video and audio acquisition module, is acquired to the video/audio from local channel, and reception comes from institute
State to exchange and identified with the local channel of control module, collection is sent to institute with the local channel corresponding video/audio of mark
State exchange and control module.
The video/audio of Lacal Head End obtains equipment and imaged, and obtains video/audio, by with local video and audio
The video/audio of acquisition is sent to local video and audio acquisition module by the passage between acquisition module.
It is specific such as that the video/audio of front end obtains equipment：Digital hard disc video recorder (DVR, Digital Video
Recorder), web camera (IPC, IP camera) etc., correspondingly, the video/audio letter that video and audio acquisition module receives
Number have it is a variety of, including Video Graphics Array (VGA, Video Graphics Array) signal, digital visual interface (DVI,
Digital Video Interface) signal, Composite Video Baseband Signal (CVBS, Composite Video Broadcast
Signal) etc..
Not only the insertion on the slot of backboard decodes daughter board, master control daughter board and video and audio output display daughter board to the present invention, also
It is inserted with local video and audio collection daughter board.Decode daughter board, master control daughter board, video and audio output display daughter board and local video and audio collection
Plate, all with exchange and control module connect；Decoding daughter board, master control daughter board, video and audio output display daughter board and local video and audio are adopted
The interaction collected between daughter board is realized by exchanging with control module.
Further, the video/audio locally gathered can be also sent to other places by the present invention, specifically：
The local video and audio collection daughter board also includes video encoding module and the 3rd communication module；
The master control daughter board, the local data output order from telecommunication customer end is received, be sent to the exchange and control
Molding block, the local data output order include the local channel source mark chosen and destination address；
The exchange and control module, the local data output order from the master control daughter board is received, by local data
Output order is sent to the local video and audio acquisition module；
The local video and audio acquisition module, the local data output order from the exchange and control module is received,
It is sent to the video encoding module；And the video/audio of collection is sent to the video encoding module；
The video encoding module, receive the video/audio from the local video and audio acquisition module and local number
According to output order, video/audio is encoded；The local channel included with local data output order after coding is marked
Video/audio corresponding to knowledge is sent to the 3rd communication module, and the destination for simultaneously including local data output order
Location is sent to the 3rd communication module；
3rd communication module, video/audio and destination address from the video encoding module are received, is pressed
According to destination address, video/audio is sent.
Further, multi-screen control device of the present invention can also store to the video/audio locally gathered, with supply and demand
Will when extract：
The multi-screen control device also includes local video and audio save module；
The video encoding module, the video/audio after coding is also sent to the local video and audio save mould
Block；
The local video and audio save module, for storing the video/audio from the video encoding module.
Local video and audio save module can specifically use USB2.0, full digital code card (SD, Secure Digital Memory
) etc. Card realize.
The local video/audio of storage is extracted, can specifically use following scheme：
The master control daughter board, the local cache data idsplay order from telecommunication customer end is received, is sent to the exchange
And control module, the local cache data idsplay order include the local channel source mark chosen and display parameters；
The exchange and control module, the local cache data idsplay order from the master control daughter board is received, from described
Local video and audio save module extracts with local cache data idsplay order includes local channel source mark is corresponding to be regarded
Voice data, it is sent to the decoding daughter board；The video/audio of the decoding daughter board feedback is received, is sent according to display parameters
To the video and audio output display daughter board；
The decoding daughter board, the video/audio from the exchange and control module is received, to video encoding data
Decoded, decoded video/audio is sent to the exchange and control module.
When implementing Fig. 4 multi-screen control device, the first communication module is attached using cable interface with netting twine, is led to
To cross IP network and carry out information exchange with telecommunication customer end, the information exchange includes receiving the various instructions from telecommunication customer end,
Instruction, outside idsplay order, local data output order, local cache data idsplay order is such as locally displayed.User opens
Communication client software on PC, is operated as needed, to be communicated with master control daughter board.Second communication module uses
Cable interface is attached with netting twine, and the video/audio from nonlocal multi-screen control device is obtained by IP network.Threeway
News module is attached using cable interface with netting twine, is sent the video/audio locally gathered by IP network.
Because the input signal source that display wall is arrived on needs is numerous, and the video wall number of screen of giant-screen is less, therefore
Need to exchange and control module selects some input source whether to be output to display wall and is output to which display screen of display.
Exchange and control module realizes that point-to-point exchange is transmitted, that is, it is any one or more aobvious to support that any input source all the way is output to
Display screen.Exchange and control module can use expanding peripherals part interconnection standard (PCIE, Peripheral Component
Interconnect Express) 2.0 grade protocol realizations.
The present invention is extended to multi-screen control device, and nonlocal multi-screen can be also checked with the multi-screen control device by local
The video/audio of control device collection, realizes that the video/audio between two or more multi-screen control device is shared；So as to section
Human resources have been saved, have optimized video monitoring, have improved efficiency.
Referring to Fig. 5, the method indicative flowchart of the multi-screen control of video and audio multihead display is carried out for the present invention, it includes
Following steps：
Step 501, master control daughter board receives the outside idsplay order from telecommunication customer end, is sent to exchange and control mould
Block, outside idsplay order include the external data source mark chosen and display parameters.
The external data source mark, can be specially the IP address for sending video/audio；Display parameters may particularly include
Position that the nonlocal data source each chosen is shown on display wall, the parameter such as size.
Step 502, exchange and control module receives the outside idsplay order from master control daughter board, by outside idsplay order
External data source mark be sent to decoding daughter board.
Step 503, decode daughter board and the video encoding data from other multi-screen control devices are received by IP network, connect
The external data source mark for coming self-exchange and control module is received, to reception and the corresponding video encoding of external data source mark
Data are decoded, and decoded video/audio is sent into exchange and control module.
The second communication module in daughter board is decoded, is received according to ethernet communication agreement from other multi-screen control devices
Video encoding data；Then video encoding Data Data is decoded by the video and audio decoder module in decoding daughter board,
It is converted into uncompressed high resolution video and audio data flow.
Step 504, exchange and control module receives the video/audio that decoding daughter board feeds back, be sent to according to display parameters
Video and audio output display daughter board.
Step 505, video/audio is sent to display wall and carries out multihead display by video and audio output display daughter board, and is carried out
Audio plays.
Specifically, image is carried out on the display screen of display wall by the video data in video/audio to show, meanwhile, by
Voice data in video/audio carries out audio broadcasting.
Further, this method also includes：
Master control daughter board receives is locally displayed instruction from telecommunication customer end, is sent to exchange and control module, local aobvious
Show that instruction includes local channel mark and the display parameters chosen；
Exchange and control module receives and instruction is locally displayed from master control daughter board, the local being locally displayed in instruction is led to
Road source mark is sent to the local video and audio acquisition module in local video and audio collection daughter board；
Local video and audio acquisition module is acquired to the video/audio from local channel, is received and is come self-exchange and control
The local channel mark of molding block, collection is sent to exchange and control mould with the local channel corresponding video/audio of mark
Block；
Exchange and control module receives the video/audio that local video and audio acquisition module feeds back, sent according to display parameters
Give video and audio output display daughter board；
Video/audio is sent to display wall and shown by video and audio output display daughter board.
Local video and audio acquisition module, high definition video collecting, the local audio collection at local video recording scene are realized, according to need
Will, the Voice ＆ Video data after digitlization are sent to exchange and control module.
Carry out output display when, as needed, can an output display other places video/audio, can also an output display
Local video and audio, the acceptable nonlocal and local video/audio of output display simultaneously.
Further, the video/audio locally gathered can be also sent to other places by this method：
Master control daughter board receives the local data output order from telecommunication customer end, is sent to exchange and control module, this
Ground data output instruction includes the local channel source mark chosen and destination address；
Exchange and control module receives the local data output order from master control daughter board, local data output order is sent out
Give local video and audio acquisition module；
Local video and audio acquisition module receives the local data output order for coming self-exchange and control module, is sent to regarding sound
Frequency coding module；And the video/audio of collection is sent to the video encoding module in local video and audio collection daughter board；
Video/audio and local data output of the reception of video encoding module from local video and audio acquisition module refer to
Order, is encoded to video/audio；The local channel included with local data output order mark after coding is corresponding
Video/audio is sent to the 3rd communication module, and the destination address that local data output order includes is sent into the 3rd simultaneously
Communication module；
3rd communication module receives video/audio and destination address from video encoding module, according to destination
Location, video/audio is sent.
Video encoding module realizes the compressed encoding of the digitlization HD video data locally gathered and voice data, greatly
The big data volume for reducing video and audio, is easy to network transmission.Specific compression and coding standard such as H.264, MPEG4.
Further, this method can also store to the video/audio locally gathered, extract during for needing：
After the video encoding module encodes to video/audio, video encoding module is also by after coding
Video/audio is sent to the local video and audio save module and stored.
The local video/audio of storage is extracted, can specifically with the following method：
Master control daughter board receives the local cache data idsplay order from telecommunication customer end, is sent to exchange and control mould
Block, the local cache data idsplay order include the local channel source mark chosen and display parameters；
Exchange and control module receives the local cache data idsplay order from the master control daughter board, regarded from the local
The local channel source that audio storage module extracts with local cache data idsplay order includes identifies corresponding video and audio number
According to being sent to the decoding daughter board；
Decode daughter board and receive the video/audio from the exchange and control module, video encoding data are solved
Code, decoded video/audio is sent to exchange and control module；
Exchange and control module receives the video/audio that decoding daughter board feeds back, it is defeated to be sent to video and audio according to display parameters
Go out to show daughter board；
Video/audio is sent to display wall and carries out multihead display by video and audio output display daughter board, and is carried out audio and broadcast
Put.
Video and audio multihead display scheme provided by the invention, for any one video monitoring center, video conference place
Personnel by the multi-screen control device at the video monitoring center, can obtain the meeting at other video monitoring centers in networking
The high definition compressed video data and audio stream of parliament field, and video/audio can be exported by decoding daughter board, it is shown to local electricity
Depending on wall.So, the staff of local video Surveillance center, by local multi-screen control device, at least two can be known
The video/audio of other video control centres collection.Also, the present invention program is used, daughter board is gathered by local video and audio, can
To realize the real-time record to local video/audio, the nonlocal video that then being stored or being sent by IP network needs is supervised
Control center.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (8)
1. a kind of multi-screen control device for carrying out video and audio multihead display, it is characterised in that the multi-screen control device includes master control
Daughter board, exchange and control module, decoding daughter board and video and audio output display daughter board；
The master control daughter board, the outside idsplay order from telecommunication customer end is received, be sent to the exchange and control module, institute
State external data source mark and display parameters that outside idsplay order includes choosing；
The exchange and control module, the outside idsplay order from the master control daughter board is received, by outside idsplay order
External data source mark is sent to the decoding daughter board；The video/audio of the decoding daughter board feedback is received, is joined according to display
Number is sent to the video and audio output display daughter board；
The decoding daughter board, the video encoding data from other multi-screen control devices are received by IP network, reception comes from
The external data source of the exchange and control module identifies, video encoding number corresponding with external data source mark to reception
According to being decoded, decoded video/audio is sent to the exchange and control module；
The video and audio output display daughter board, the video/audio from the exchange and control module is received, is sent to display
Wall carries out multihead display, and carries out audio broadcasting；
The multi-screen control device also includes local video and audio collection daughter board, and the local video and audio collection daughter board includes locally regarding sound
Frequency acquisition module；
The master control daughter board, also receive and instruction be locally displayed from telecommunication customer end, be sent to the exchange and control module,
Local channel mark and the display parameters that instruction is locally displayed and includes choosing；
The exchange and control module, receive and instruction is locally displayed from the master control daughter board, will be locally displayed in instruction
Local channel source mark is sent to the local video and audio collection daughter board；Receive regarding for the local video and audio acquisition module feedback
Voice data, the video and audio output display module is sent to according to display parameters；
The local video and audio acquisition module, is acquired to the video/audio from local channel, and reception comes from the friendship
Change and identified with the local channel of control module, collection is sent to the friendship with the local channel corresponding video/audio of mark
Change and control module.
2. multi-screen control device as claimed in claim 1, it is characterised in that the master control daughter board include the first communication module and
More screen controller central processing modules, the decoding daughter board include the second communication module and video and audio decoder module；
First communication module, receive the outside idsplay order from telecommunication customer end and instruction is locally displayed, be sent to
More screen controller central processing modules；
More screen controller central processing modules, receive the outside idsplay order from first communication module and local
Idsplay order, it is sent to the exchange and control module；
Second communication module, the video encoding data from other multi-screen control devices are received by IP network, sent
To the video and audio decoder module；
The video and audio decoder module, the video encoding data from second communication module are received, received from described
Exchange and the external data source of control module identifies, reception video encoding data corresponding with external data source mark are entered
Row decoding, the exchange and control module are sent to by decoded video/audio.
3. multi-screen control device as claimed in claim 1, it is characterised in that the local video and audio collection daughter board also includes regarding
Audio coding module and the 3rd communication module；
The master control daughter board, the local data output order from telecommunication customer end is received, be sent to exchange and the control mould
Block, the local data output order include the local channel source mark chosen and destination address；
The exchange and control module, the local data output order from the master control daughter board is received, local data is exported
Instruction is sent to the local video and audio acquisition module；
The local video and audio acquisition module, the local data output order from the exchange and control module is received, is sent
To the video encoding module；And the video/audio of collection is sent to the video encoding module；
The video encoding module, receives video/audio from the local video and audio acquisition module and local data is defeated
Go out instruction, video/audio is encoded；By the local channel included with local data output order the mark pair after coding
The video/audio answered is sent to the 3rd communication module, and the destination address for simultaneously including local data output order is sent out
Give the 3rd communication module；
3rd communication module, video/audio and destination address from the video encoding module are received, according to mesh
Address, video/audio is sent.
4. multi-screen control device as claimed in claim 3, it is characterised in that the multi-screen control device also includes local video and audio
Memory module；
The video encoding module, the video/audio after coding is also sent to the local video and audio save module；
The local video and audio save module, for storing the video/audio from the video encoding module.
5. multi-screen control device as claimed in claim 4, it is characterised in that
The master control daughter board, the local cache data idsplay order from telecommunication customer end is received, be sent to the exchange and control
Molding block, the local cache data idsplay order include the local channel source mark chosen and display parameters；
The exchange and control module, the local cache data idsplay order from the master control daughter board is received, from the local
The local channel source that video and audio save module extracts with local cache data idsplay order includes identifies corresponding video and audio
Data, it is sent to the decoding daughter board；The video/audio of the decoding daughter board feedback is received, institute is sent to according to display parameters
State video and audio output display daughter board；
The decoding daughter board, the video/audio from the exchange and control module is received, video encoding data are carried out
Decoding, the exchange and control module are sent to by decoded video/audio.
6. a kind of device based on described in claim 1 carries out the multi-screen control method of video and audio multihead display, it is characterised in that
This method includes：
Master control daughter board receives the outside idsplay order from telecommunication customer end, is sent to exchange and control module, and outside display refers to
Order includes the external data source mark chosen and display parameters；
Exchange and control module receives the outside idsplay order from master control daughter board, by the external data source in outside idsplay order
Mark is sent to decoding daughter board；
Decode daughter board by IP network receive the video encoding data from other multi-screen control devices, receive come self-exchange and
Reception video encoding data corresponding with external data source mark are solved by the external data source mark of control module
Code, decoded video/audio is sent to exchange and control module；
Exchange and control module receives the video/audio that decoding daughter board feeds back, it is aobvious to be sent to video and audio output according to display parameters
Show daughter board；
Video/audio is sent to display wall and carries out multihead display by video and audio output display daughter board, and carries out audio broadcasting；
This method also includes：
Master control daughter board receives is locally displayed instruction from telecommunication customer end, is sent to exchange and control module, finger is locally displayed
Order includes the local channel mark chosen and display parameters；
Exchange and control module receives and instruction is locally displayed from master control daughter board, the local channel source in instruction will be locally displayed
Mark is sent to the local video and audio acquisition module of local video and audio collection daughter board；
Local video and audio acquisition module is acquired to the video/audio from local channel, is received and is come self-exchange and control mould
The local channel mark of block, collection is sent to exchange and control module with the local channel corresponding video/audio of mark；
Exchange and control module receives the video/audio that local video and audio acquisition module feeds back, be sent to and regard according to display parameters
Audio output shows daughter board；
Video/audio is sent to display wall and shown by video and audio output display daughter board.
7. method as claimed in claim 6, it is characterised in that this method includes：
Master control daughter board receives the local data output order from telecommunication customer end, is sent to exchange and control module, local number
Local channel source mark and the destination address for including choosing according to output order；
Exchange and control module receives the local data output order from master control daughter board, local data output order is sent to
Local video and audio acquisition module；
Local video and audio acquisition module receives the local data output order for coming self-exchange and control module, is sent to video and audio volume
Code module；And the video/audio of collection is sent to the video encoding module in local video and audio collection daughter board；
Video encoding module receives video/audio and local data output order from local video and audio acquisition module, right
Video/audio is encoded；By the corresponding video and audio of the local channel included with local data output order mark after coding
Data are sent to the 3rd communication module, and the destination address that local data output order includes is sent into the 3rd communication mould simultaneously
Block；
3rd communication module receives video/audio and destination address from video encoding module, will according to destination address
Video/audio is sent.
8. method as claimed in claim 7, it is characterised in that the video encoding module encodes to video/audio
Afterwards, this method also includes：
Video/audio after coding is also sent to the local video and audio save module and stored by video encoding module.
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| CN108234817B (en) * | 2016-12-21 | 2020-11-06 | 杭州海康威视数字技术股份有限公司 | Display synchronization method and video display terminal |
| CN109218656B (en) * | 2017-06-30 | 2021-03-26 | 杭州海康威视数字技术股份有限公司 | Image display method, device and system |
| CN112312074B (en) * | 2019-08-02 | 2023-03-24 | 杭州海康威视数字技术股份有限公司 | Audio data output method and audio matrix |
| CN110913158A (en) * | 2019-11-29 | 2020-03-24 | 广州视源电子科技股份有限公司 | Display and audio-video signal processing method |
| CN111629234B (en) * | 2020-06-24 | 2022-09-02 | 上海大因多媒体技术有限公司 | Transmission method, device, equipment and storage medium for coexistence of different types of videos |
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