CN101917415B - Digital court system for remote court trial - Google Patents
Digital court system for remote court trial Download PDFInfo
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Abstract
The invention provides a digital court system for remote court trial. Digital media resource management systems (RMS), streaming multimedia servers (SMS), multimedia coding and decoding equipment DVC and digital media control hosts MCP are respectively arranged at the request end and the receiving end of the system; the request end is connected with the receiving end through network; and a remote centralized control server (RCS) is arranged between the request end and the receiving end. By using the invention, the remote court trail can be realized without adding other peripheral equipment and systems, the cost of users can be reduced, the work efficiency of the user can be improved and the quality of the recorded image can be improved.
Description
Technical field
The present invention is used to relate to automatic field, particularly a kind of digital court system that is used for long-range court's trial.
Background technology
In original digital court system; Basically all be by video conference rooms equipment, as shown in Figure 1 before the trial beginning, set up a cover video conferencing system earlier; Comprising MCU (multipoint control unit) 11, local conference room terminal 12, terminal, teleconference chamber 13 several sections; Various terminal is all inserted MCU and is exchanged, and forms a video conference network, inserts digital court system 14 again behind the audio/video decoding with the video conference terminal reception again and gathers; Audio-video signal sends to MCU11 through remote terminal 13 codings; Send local terminal 12 to by MCU11 again and decode, more decoded audio frequency and video are used for local display device 15 displayings and record, realize long-range court's trial thus with inserting digital court system 14.
In realizing process of the present invention, find that there is following problem at least in prior art:
Video conferencing system can not set up usually in digital court when building; If realize long-range court's trial; Will build video conference environment temporarily, reduced the professional efficient of trial, and the video conferencing system cost be higher; Audio-video signal is through after coding-decoding-three steps of coding, and the picture quality of recording can decline to a great extent.
Summary of the invention
The technical problem that the present invention will solve is a kind of digital court system that is used for long-range court's trial, need not increase other ancillary equipment and system, realizes long-range court's trial, reduces user's cost, improves user's operating efficiency, improves the picture quality of recording.For solving the problems of the technologies described above, technical scheme of the present invention is following:
A kind of digital court system that is used for long-range court's trial has all comprised digital media resource management system RMS, stream media server S MS, multi-media decoding and encoding equipment DVC, the main control system MCP of Digital Media at the request end and the receiving terminal of system; The request end is connected through network with receiving terminal, between request end and receiving terminal, is laid with remote centralized Control Server RCS; It is characterized in that the audio-video signal in the request end flows to and is:
The external equipment of request end MCP sends request end DVC coding module to after audio, video data is passed through interior video matrix and audio mix resume module;
After request end DVC coding module passes through compressed encoding with the audio-video signal that sends; Send the receiver module of request end SMS to through Ethernet; The decoder module of request end DVC can be obtained from the audio-video signal of receiving terminal from the SMS receiver module of request end through Ethernet and decode simultaneously, and decoded audio-video signal is exported to external display device and power amplifying device through request end MCP;
The receiver module of request end SMS is transmitted to it forwarding module and preserves module after receiving audio-video signal; Preserve module and audio-video signal is saved as the audio/video flow file that supply to play; And store in the local hard drive; Forwarding module is responsible for audio-video signal is sent to the SMS of receiving terminal, so that the audio/video flow that receiving terminal can the playing request end; The receiver module of request end SMS also can send the audio-video signal of receiving terminal to the DVC decoder of request end simultaneously through Ethernet;
Request end RMS is responsible for the SMS to the request end, DVC, and the control of MCP and management provide access rights to request end equipment, and to file management data base querying are provided, and download deletion; RMS can also generate the URL path of direct broadcast band for audio/video flow, and the user can pass through this path access audio/video flow;
The audio-video signal of receiving terminal is at RMS, DVC, and MCP, the signal flow among the SMS is to identical with the request end;
RCS is responsible for request end and the running status of receiving terminal in the monitoring network in network, for the both sides of system provide real-time configuration parameter and running state information.
The digital court system that is used for long-range court's trial also comprises digital court's trial control system COS, is used to the user man-machine interface is provided, and when the user clicks respective keys, sends the associative operation order to RMS; When the user began to start long-range court's trial, described request end was a local side, and receiving terminal is a remote port, it is characterized in that:
COS is as the triggering source of the long-range court's trial of local side, and when clicking respective keys and start long-range court's trial operation, COS sends starting command through Ethernet and gives local RMS;
RMS sends to local side SMS after receiving starting command immediately, and it is live to start audio/video flow, simultaneously starting command is sent to remote port RMS, after remote port RMS receives starting command, issues remote port SMS, and it is live that notice remote port SMS starts audio/video flow;
Long-range SMS starts live back and sends the unlatching success command to long-range RMS, and transmits local RMS by long-range RMS; Also can send after local SMS startup is live and open success command to local RMS;
After the RMS of this locality receives that long-range RMS and local SMS open successful order; Send the order that connects sound audio frequency and video source and give long-range RMS and local SMS; After long-range RMS receives to connect the order of audio frequency and video source, can this order be sent to long-range SMS;
Long-range SMS connects success back, audio frequency and video source and sends the successful connection order to long-range RMS, and is transmitted to local RMS by long-range RMS; Local SMS also can send the successful connection order to local RMS after connecting the success of audio frequency and video source;
After the RMS of this locality receives that long-range RMS and local SMS successful connection are ordered, can return one to COS and open successful affirmation information, accomplish the flow process of opening long-range court's trial.
After starting long-range court's trial, the signal flow that is used to switch long-range audio frequency and video source is to being:
COS connects the triggering source as long-range court's trial signal source, and when clicking the long-range court's trial of startup connection to local the demonstration, COS orders the RMS to this locality through the long-range audio frequency and video of Ethernet transmission connection source;
After local RMS receives and connects the order of long-range audio frequency and video source; Audio frequency and video source with this locality stops to record immediately; Thereupon can with all current audio/video flow files cut apart be packaged into one complete can be for behind the audio/video flow file of playing; And open recording of long-range audio frequency and video source; And the live audio frequency and video source in the live module among the local SMS changed to long-range live audio frequency and video source, and local SMS notice starts the decoder module of DVC, and the remote image of decoding output supplies display device and power amplifying device use with audio frequency;
Local RMS is after above flow processing is intact; Can send the long-range audio frequency and video of disconnection connection source orders to long-range RMS; Long-range RMS switches to local audio frequency and video source with live URL after receiving orders, with notifying long-range SMS to stop decoding, remote port just cannot see the signal in local audio frequency and video source like this; Local then RMS returns one to COS and breaks off successful affirmation information, accomplishes the flow process of breaking off long-range court's trial.
The digital court system that is used for long-range court's trial, said digital media resource management system RMS comprises:
The message event administration module is used to show all long-range court's trial message event and equipment alarm message event; Show and also do not handle long-range court's trial message event and the equipment alarm message event of not reading; Show the long-range court's trial message event and the equipment alarm message event of having checked;
Content managing module is used for by year inquiring about and showing the case trial information of opening the front yard; Show the case trial information of opening the front yard by case type; Show the case trial information of opening the front yard by court's title; And the user provides flexible inquiry mode, provides the condition of inquiry to have: case number, case type, court's trial mode, court time, court's trial numbering, court's title, judge;
The waiting administration module is used to provide the maintenance to case information; Maintenance and long-range court's trial to court's trial waiting information are provided; Set up case waiting on the same day; Provide case long-range open the court session and adjudicate the case function; Long-range information request and the native court of opening a court session that can receive that the other side law court sends initiated long-range court's trial request to other law court, and a remote interaction trial platform is provided;
System management module is used to show that the essential information of native court reaches its maintenance of information; Management maintenance trial department information; The management maintenance forensic information; The management maintenance case is by information; Management maintenance post information; Management maintenance trial font size information; Management maintenance case type information; Explicit representation is institute-level not by different level, and law courts at different levels information is safeguarded; Management maintenance party type information.
Authority management module is used to provide keeper's administering and maintaining user role and associated rights; The keeper is provided administering and maintaining user and relevant information;
Statistical analysis module, by time and measurement type statistics case, providing intuitively, chart shows; Program request and live situation are analyzed, and provided chart to show;
The Broadcast Control administration module is used for server group, server, publishing point are managed; The stored parameter setting of using native system is provided for the keeper; Configuration flow media server parameter is provided with live publishing point parameter;
Log management module is used to provide the operation of checking the user and derives journal function; Be used for search, check log-on message and court's trial information; The inquiry of program request live information is provided and derives journal function;
Centralized control module is used to the long-range adapter court's trial control of administrative staff and uses;
The monitoring of tools module is used for equipment control, the device parameter management, and monitor message is checked and is disposed; But be used to provide the warning message of management equipment.
The main control system MCP of Digital Media comprises:
Main control module: be used for total control module, be responsible for each module in the equipment is controlled as whole Digital Media main control system, configuration, and state-detection, and be responsible for handling process of commands and the parsing that miscellaneous equipment is sent in the local area network (LAN);
Middle control module: be used for the supplementary module of main control module, be mainly used in and be responsible for the control external equipment;
Video matrix: be used for realizing that any input of SD vision signal can switch to any output port, its input can external DVD, and it is first-class to make a video recording, and output connects monitor;
The VGA matrix: be used for realizing that any input of high-definition video signal can switch to any output port, its input can external computer, or the high definition camera; Output connects television set, display, or projector;
The audio mixing matrix: be used for each audio signal of input is carried out audio mixing, and switch to local power amplifying device according to demand, or the DVC coding/decoding apparatus; It is input as computer, DVD, or recording pen, and output connects power amplifying device, audio/video conference terminal, or backstage audiomonitor;
Can beg for main frame: be used to handle the open and close of the pickup of external audio input source microphone, and the volume of regulating every microphone;
Synthesizer: be used for realizing multiway images is dwindled and synthetic image by a certain percentage, make the signal that in a picture, can watch a plurality of angle cameras;
Upconverter: be mainly used in when the SD signal is imported, through after the digital processing and amplifying, it can be shown in the high definition display device image;
Frequency demultiplier: be used to be mainly used in when high-definition signal is imported, through after numeral dwindles processing, it can be shown in the SD display device image.
The said main control system MCP of Digital Media can integrated a plurality of DVC, and perhaps DVC can be used as independent equipment and is present in the digital court system.
Said SMS comprises:
Synchronous recording module: be used for synchronous recording video, audio frequency and computer dynamic screen content VGA signal, can computer screen be attend institute's content displayed synchronous recording;
Live module: be used on network, carrying out through clean culture or multicast mode video, audio frequency, computer dynamic screen that meeting is on-the-spot live, the user can receive live video, audio frequency and computer dynamic screen content in real time through IE browser logon server; When live module is used to handle real-time when live, audio and video data streams is from receiver module; When being used for process points sowing time, be used for VOD program request resume module good flow to network direct broadcasting or multicast is gone out;
VOD point broadcasting module: SMS system built-in VOD point multicast function, the user can record the file that is stored on the streaming media server through the mode program request of IE browser; The content that program request can be watched comprises video, audio frequency and computer screen content; And support multistage program request user right control;
Main control module: be used for total control module, be responsible for each module in the software is carried out thread scheduling as whole software, control, configuration, and state-detection, and the communication of intermodule is handled;
The command analysis processing module: and be responsible for handling RMS in the local area network (LAN), process of commands that DVC sends and parsing;
File is uploaded download module: be used for handling that the file of recording on the DVC is uploaded to the SMS server, also be applied to simultaneously uploading and downloading of file between the SMS server, be used to solve the data centralization storage;
Audio/video flow receiver module: the audio/video flow data that are used for handling automatic network DVC, SMS.
Said DVC comprises:
Coding unit: after being used for SD or high resolution audio and video signal with input and carrying out compressed encoding H.264, and form audio/video flow and pass to network and local memory cell;
Decoding unit: be used for that network is uploaded the audio/video flow that compresses and carry out decompress(ion), and the audio/video flow behind the decompress(ion) is formed the simulation shows signal supply to connect display device and watch;
Local memory cell can be with file storage to local hard drive; And can the present encoding audio/video flow be stored as the transport stream TS file, comprise a high definition and four tunnel high definitions, and storing process do not influence live and download function, files stored can be play with the standard multimedia player;
Query unit can be inquired about stored information, according to storage time started, label; Passage inquiry stored information, the stored information that inquires comprises: time started, concluding time, file size; Store path, timestamp pts, totalframes; Document time length, and the integrality of file, and can control the bar number that inquiry storage multimedia application is served;
The power down process unit, under the situation that DVC breaks down, the data that guarantee after it restarts to be inquired about are not made mistakes;
Interface unit can provide outside SMS to carry out the mutual interface of relevant information; Said relevant information is the start and end time label information, and the multimedia of application service size and frame number information; Interface unit can also provide mutual with the multi-medium data of external module;
The file division unit is used for audio/video flow is carried out file division;
Control unit, beginning that can control store and stopping; And the time started and the concluding time of record storage, and stamp corresponding time tag, make things convenient for query unit and stream media server S MS inquiry; The DVC control unit can be controlled hard disk and cover; And can or cover threshold values according to the scheduled time circulates to file and covers or remove; Control unit can also be realized the stored information deletion, promptly can delete specified file and catalogue; And according to the storage time started, label, passage deletion stored information;
The disk state control unit can obtain the carry state of hard disk, gross space, usage space, remaining space;
Download unit can use http to download the recording multi-media data file, 4 road functions downloaded simultaneously that provide support, and when requiring downloading to live, storage is influence not, can support breakpoint transmission; Speed of download is set;
Local hard drive is used to store audio-video document.
When adopting digital court system of the present invention to realize long-range court's trial, can reduce user's cost, improve user's operating efficiency, improve the multi-media image quality of recording.
Description of drawings
Fig. 1 is for having now in the digital court system based on the video conference terminal sketch map
Fig. 2 is the system applies general diagram of the long-range court's trial of the present invention
Fig. 3 is the non-law court in a long-range audio frequency and video source flow chart
Fig. 4 is that law court does not have the RCS sequence chart for long-range audio frequency and video source
Fig. 5 is a law court for long-range audio frequency and video source: the RCS sequence chart is arranged
Fig. 6 is the long-range court's trial sequence chart of beginning
Fig. 7 is the dynamic switching sequence figure of long-range court's trial audio frequency and video
Fig. 8 is newly-built case surface chart
The newly-built waiting surface chart of Fig. 9
Figure 10 is courts across the country's structure chart
Figure 11 is for sending long-range court's trial request figure
Figure 12 is long-range court's trial court and personnel's surface chart for receiving terminal distributes
Figure 13 agrees party in request's request surface chart for receiving terminal
The audio-video signal resource that Figure 14 passes for the request end configuration mutually
Figure 15 is a M CP module relation diagram
Figure 16 is the SMS module relation diagram
Figure 17 is the DVC module relation diagram
Embodiment
The Chinese of the english abbreviation that defines among the present invention is:
RMS: digital media resource management system
MCP: Digital Media main control system
SMS: streaming media server
DVC: multi-media decoding and encoding equipment
RCS: remote centralized Control Server
COS: digital court's trial control system
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail according to the system applies general diagram below:
Fig. 2 is the complete total figure of system applies, and the request end and the receiving terminal of long-range court's trial system all have RMS, SMS, DVC, MCP equipment, and between two sides, are furnished with RCS;
Wherein after the audio, video data of the external equipment of MCP such as DVD, camera, computer process interior video matrix and the audio mixing module, be defeated by the DVC encoder;
After the DVC encoder passes through compressed encoding with the audio-video signal of bringing; Send the receiver module of SMS to through Ethernet; Simultaneously; The decoder module of DVC can be obtained the other side through Ethernet and pass the audio/video flow signal come and decode from the receiver module of SMS, decoded analog audio-video signal is exported to external display device and power amplifying device through the matrix of MCP;
After the receiver module of SMS is handled code stream is passed to forwarding module and preserved module; Preserving module is responsible for audio/video flow is preserved the audio/video flow file that can supply play; Be stored in the local hard drive; Forwarding module is responsible for code stream is sent to the SMS in a distant place, supplies receiving terminal can see the image of request end, and receiver module also can be passed to the other side's audio/video flow the decoder of DVC simultaneously through Ethernet;
RCS is responsible for all devices in the monitoring network in network, running statuses such as request end and the DVC of party in request, SMS, MCP, RMS are the configuration parameter that real-time both sides are provided and the running status of system.
RMS is responsible for the only SMS of responsible folk prescription, DVC, MCP control and management; To system access right, file management etc. provide data base querying, download; Operations such as deletion, RMS can also generate the URL path of direct broadcast band for audio/video flow in addition, and the user can pass through this path access audio/video flow.
In practical application,, can there be following three kinds of different applicable cases: the non-court system in long-range audio frequency and video source according to the difference of using; Long-range audio frequency and video source is a court system but it does not dispose remote centralized Control Server RCS; Long-range audio frequency and video source is law court and disposes RCS.Concrete following three specify as follows:
The non-law court in long-range audio frequency and video source is as shown in Figure 3: select to want the waiting of long-range court's trial, import the IP address of long-range audio-video collection equipment DVC, connect long-range DVC.Successful connection or obtain the effective audio frequency and video passage of long-range SMS, the user disposes the respective channel that local DVC audio frequency and video passage is gathered far-end DVC.
It is as shown in Figure 4 that long-range audio frequency and video source is that law court does not have the flow process of RCS:
1. select to want the waiting of long-range court's trial, from courts across the country's structure of local system, select long-range law court to submit long-range court's trial application to.
2. after long-range court's trial is agreed by the other side law court, arrange court.
3. obtain effective audio frequency and video passage of DVC in the arranged court of the other side law court.
4. dispose local DVC and gather the corresponding audio frequency and video passage of long-range DVC.
Long-range audio frequency and video source is that law court has RCS as shown in Figure 5:
1. select to want the waiting of long-range court's trial, from RCS obtains law court's structure of current management, select long-range law court and court to submit long-range court's trial application to.
2. the other side law court receives the back long-range court's trial of agreement automatically.
3. obtain effective audio frequency and video passage of DVC in the arranged court of the other side law court.
4. dispose local DVC and gather the corresponding audio frequency and video passage of long-range DVC.
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, below be described in detail according to the digital court system operation sequential chart that is used for long-range court's trial:
It is as shown in Figure 6 to begin long-range court's trial sequence chart: can find out in the sequential chart of Fig. 6 that when starting long-range court's trial the flow direction explanation between each module by signal as follows.
COS triggers the source as long-range court's trial, and when clicking the long-range court's trial of startup, COS will send starting command through Ethernet and give local RMS;
It is live send to start local SMS after RMS receives orders immediately, also can send a starting command simultaneously and give long-range RMS, when long-range RMS open receive orders after, will send order immediately and give long-range SMS, it is live to notify long-range SMS to start;
Long-range SMS starts live back and sends the unlatching success command to long-range RMS, and transmits local RMS by long-range RMS; Also can send after local SMS startup is live and open success command to local RMS
After the RMS of this locality receives that long-range RMS and local SMS open success command, the order that connects the audio frequency and video source be will send and long-range RMS and local SMS are given to, after long-range RMS receives to connect the order of audio frequency and video source, can order be given to long-range SMS;
Long-range SMS connects success back, audio frequency and video source and sends the successful connection order to long-range RMS, and is transmitted to local RMS by long-range RMS; Local SMS also can send the successful connection order to local RMS after connecting the success of audio frequency and video source;
After the RMS of this locality receives that long-range RMS and local SMS successful connection are ordered, can return one to COS and open the successful affirmation information of long-range court's trial.So far the long-range court's trial flow process of complete unlatching is accomplished.
Dynamic switching sequence figure is as shown in Figure 7 for long-range court's trial audio frequency and video: in Fig. 7, can find out, after starting long-range court's trial, be used to switch the signal flow graph of remote signal sources.
COS connects the triggering source as long-range court's trial signal source, and when clicking the long-range court's trial of startup connection to local the demonstration, COS will order the RMS to this locality through the long-range audio frequency and video of Ethernet transmission connection source;
After local RMS receives and connects the order of long-range audio frequency and video source; Audio frequency and video source with this locality stops to record immediately; Thereupon can with all current audio/video flow files cut apart be packaged into one complete can be for behind the audio/video flow file of playing; And open recording of long-range audio frequency and video source; And the live audio frequency and video source in the live module among the local SMS changed to long-range live audio frequency and video source, and local SMS notice starts the decoder module of DVC, and the remote image of decoding output supplies display device and power amplifying device use with audio frequency;
Local RMS is after following flow process is all handled; Can send the long-range audio frequency and video of connection source orders to long-range RMS; Long-range RMS switches to long-range audio frequency and video source with live URL after receiving orders; With notifying long-range SMS to start decoding, long-rangely so just can see the signal in local audio frequency and video source.
When the COS click stopped to connect the audio frequency and video source, COS will stop to connect long-range audio frequency and video source through the Ethernet transmission ordered the RMS to this locality;
After receiving orders, RMS immediately long-range audio frequency and video source is stopped to record; Thereupon can with current All Files cut apart be packaged into a complete audio/video flow file of supply playing after; Open recording of local audio frequency and video source thereupon; And the live source in the live module changed to local live source, and notice SMS stops decoder module, remote image will disappear on the display of this locality;
Local RMS is after above several flow processs are all handled; Can send the long-range audio frequency and video of disconnection connection source orders to long-range RMS; Long-range RMS switches to local audio frequency and video source with live URL after receiving orders; With notifying long-range SMS to stop decoding, long-rangely so just can cannot see the signal in local audio frequency and video source.
After the RMS of this locality handles above flow process, can return one to COS and break off successful affirmation information.So far the long-range court's trial flow process of complete disconnection is accomplished.
For technical scheme and advantage that embodiments of the invention will be solved is clearer, use flow process and software interface to be described in detail according to accompanying drawing and embodiment to client layer of the present invention below:
The operating process that long-range court's trial application is accomplished in the request end is following:
Newly-built case software interface shown in Figure 8 is used to set up a case information, next step entering;
Waiting software software interface shown in Figure 9 is used for case is carried out long-range court's trial waiting, next step entering;
Courts across the country's infrastructure software software interface that Figure 10 shows; The long-range law court that is used for selecting the needs connection is at this window; Find respective remote law court in the directory tree through search or left side; Here be example with [PLA Military Court] for long-range law court, select long-range law court, next step entering;
After the selection law court shown in Figure 11, the other side is issued in request, wait for the approval of the other side law court, so far accomplish a flow process.
Receiving terminal is examined application process:
Shown in Figure 12ly be used to receive after application is initiated in the request end, carry out long-range court's trial and distribute court and clerk, after confirming to agree, next step entering; Click " disposing long-range audio frequency and video source ", in the dialog box that ejects, select local and the mutual audio frequency and video source of long-range needs, click " completion " again and get final product
Figure 13 has passed to party in request with the relevant information of distributing, and has just agreed long-range court's trial this time.
The operating process of the audio-video signal resource that the request end configuration passes mutually is following::
Shown in Figure 14 being used for after long-range court's trial successful request, the configuration of long-range court's trial audio frequency and video source is carried out in the request end, disposes local audio frequency and video source and long-range audio frequency and video source, is example with exchange [plaintiff] vision signal.
Set forth in the face of functions of modules of the present invention down
(1) RMS digital media resource management system module:
Rmc system is the main management system of system.This system adopts the B/S framework, and each law court disposes a cover, and digital court system is configured and manages.System user of service can pass through the web browser login system on any computer in the Web net.System mainly comprises following functional module: the waiting management, and Content Management, the Broadcast Control management, rights management, system management, log management, centralized control etc., the function declaration of each module is following:
(2) Digital Media main control system
MCP Digital Media main control system:
The Digital Media main control system adopts advanced integrated technology, and multiple control interface able to programme is provided; Realize that an equipment solves SD/HD encoding and decoding fluidisation; Audio frequency is regulated, video matrix, and central authorities' control, format conversion, video is cut apart, and can beg for multiple functions such as main frame, mainly should be used for big-and-middle-sized court, middle-size and small-size meeting room etc.Compare with traditional solution, this device integration is high, and multiple functional, the stability of a system has great raising, the while equipment cost, and cable wiring manufacture also significantly reduces.Module relation diagram shown in figure 15.
The explanation of each module of MCP
Main control module: be used for total control module, be responsible for each module in the equipment is controlled as entire equipment, configuration, and state-detection, and be responsible for handling process of commands and the parsing that third party device in the local area network (LAN) or RMS send.
Middle control module: be used for the supplementary module of main control module, be mainly used in and be responsible for the control external equipment, control the rotation of video camera as passing through serial ports, the opening/closing of light, projector regulates; Control the unlatching of DVD etc. through the emission infrared code.
The VIDE matrix: be used for realizing that any input of SD vision signal can switch to any output port, it imports general external DVD, and it is first-class to make a video recording, and output connects monitor.
The VGA matrix: be used for realizing that any input of high-definition video signal can switch to any output port, it imports general external computer, and the high definition shooting is first-class, and output connects television set, display, projector.
Audio mixing matrix: be used for each audio signal of input is carried out audio mixing, and switch to local power amplifier according to demand, DVC encoding and decoding etc.It imports general computer, DVD, and recording pen etc., output connects power amplifier, video conference terminal, monitor on the backstage.
Can beg for main frame: be used to handle the open and close of the pickup of external audio input source microphone, and the volume of regulating every microphone;
The picture synthesizer: be used for realizing multiway images is dwindled and synthetic image by a certain percentage, maximum can realize the synthetic of 8 tunnel vision signals, makes the signal that in a picture, can watch a plurality of angle cameras.
Upconverter: be mainly used in when the SD signal is imported, image through after the digital processing and amplifying, can show it, as is input as camera signals in the high definition display device, need in computer monitor, watch.
Frequency demultiplier: be used to be mainly used in when high-definition signal is imported, image through after numeral dwindles processing, can show it, as is input as pcs signal in the SD display device, need in video-frequency monitor, watch.
(3) SMS streaming media server
The serial streaming media server of SMS (Streaming Media Server) is the logical special live streaming media VOD system to the Streaming Media application and development of China's electricity.This system adopts (SuSE) Linux OS, cooperates with the RMS management server and sets up into application system, is embodied as that user's court's trial/meeting is live, program request, multicast, records etc.Module relation diagram shown in figure 16.
The explanation of each module of SMS
Synchronous recording module: be used for synchronous recording video, audio frequency (AV signal) and computer dynamic screen content (VGA signal), can image, sound and computer screens such as the report of being explained, lecture notes PPT that meeting is on-the-spot attend institute's content displayed synchronous recording.
Live module: be used on network, carrying out through clean culture or multicast mode video, audio frequency, computer dynamic screen that meeting is on-the-spot live, the user can receive live video, audio frequency and computer dynamic screen content in real time through IE browser logon server.Live module is real-time when live when being used to handle, and audio and video data streams is from receiver module; When being used for process points sowing time, be used for the network direct broadcasting/multicast that flows to that VOD program request resume module is good and go out.
VOD point broadcasting module (Video On Demand video on demand techniques): system's built-in VOD point multicast function, the user can record the file that is stored on the streaming media server through the mode program request of IE browser.The content that program request can be watched comprises video, audio frequency and computer screen content.Support multistage program request user right control.
Main control module: be used for total control module, be responsible for each module in the software is carried out thread scheduling as whole software, control, configuration, and state-detection, and the communication of intermodule is handled.
The command analysis processing module: and be responsible for handling RMS in the local area network (LAN), process of commands that DVC sends and parsing.
File is uploaded download module: be used for handling that the file of recording on the DVC is uploaded to the SMS server, also be applied to simultaneously uploading and downloading each other of file between the SMS server, be used to solve the problem of data centralization storage.
Audio/video flow receiver module: the audio/video flow data that are used for handling automatic network DVC, SMS.
(4) multimedia coding-decoder equipment DVC
In network store system, comprise multimedia coding-decoder equipment; DVC can be used for 1 road sign clear/equipment of high resolution audio and video signal decoding and Network Transmission; DVC can realize composite video signal interface CVBS, video card output analog signal interface VGA, HDMI HDMI, the digital visual interface DVI output of decoding, and has the Ethernet interface of 10/100M at DVC.DVC equipment can show through decoding long-range vision signal in this locality, through Network Transmission and multicasting technology, realize the high-quality long-distance video transmission of broadcast level.In addition, DVC equipment can be widely used in SD/high-definition signal decoding, Network Transmission, the transmission of audio/video conference double fluid of multimedia storage system, various occasions such as man-machine interface monitoring.Applicable to the various digital video application field that comprises remote teaching, tele-medicine, video conference, monitoring and radio and television.Figure 17 is the DVC module relation diagram.
The explanation of each module of DVC
DVC has coding unit: after being used for SD/high resolution audio and video signal with input and carrying out compressed encoding H.264, and form audio/video flow and pass to network and local memory cell.
DVC has decoding unit: be used for that network is uploaded the audio/video flow that compresses and carry out decompress(ion), and the audio, video data behind the decompress(ion) is formed the simulation shows signal supply to connect display and watch.
DVC has local memory cell, can be with file storage to local hard drive; And can the present encoding data flow be stored as the transport stream TS file, comprise a high definition and four tunnel high definitions, and storing process do not influence live and download function, files stored can be play with the standard multimedia player, supports greater than the 4GB file.
DVC has query unit, can inquire about stored information.The DVC query unit is according to the storage time started, label, and passage inquiry stored information, the stored information that inquires comprises: the time started; Concluding time, file size, store path; Timestamp pts, totalframes, document time length; And the integrality of file, and can control the bar number that inquiry storage multimedia application is served, and guarantee that inquiry velocity is because number of labels reduces very fast.
DVC also has the power down process unit, and under the situation that DVC breaks down when outage (for example DVC), the data that guarantee after it restarts to be inquired about are not made mistakes.The a plurality of end functions of a plurality of beginnings are supported in the power down process unit; If repeatedly begin, only the time of the record time started label first time, the time tag that begins is later on ignored, up to end.If repeatedly finish, only the time of the record concluding time label first time, the time tag that finishes is later on ignored, up to beginning; Thereby guarantee that SMS inquiry DVC is the integrality of time tag.
DVC has interface unit, can provide outside SMS to carry out the mutual interface of relevant information; Like the start and end time label information, and the multimedia of application service size and frame number information.Interface unit can also provide mutual with the multi-medium data of external module.
DVC also has the file division unit, is used for audio/video flow is carried out file division;
DVC also has control unit, beginning that can control store and stopping; And the time started and the concluding time of record storage, and stamp corresponding time tag, make things convenient for query unit and stream media server S MS inquiry.The DVC control unit can be controlled the hard disk covering in addition; And can according to the scheduled time with or cover threshold values and file is circulated cover or remove; Control unit can also be realized the stored information deletion, promptly can delete specified file and catalogue; And according to the storage time started, label, passage deletion stored information.
DVC also has hard disk attitude control unit, can obtain the carry state of hard disk, gross space, usage space, remaining space.DVC also has download unit, can use http to download the recording multi-media data file, 4 road functions downloaded simultaneously that provide support, and when requiring downloading to live, storage is influence not, can support breakpoint transmission; Speed of download is set.
DVC also has local hard drive, is used to store audio-video document.
(5) RCS remote centralized Control Server
RCS [Remote Control Server] remote centralized Control Server solves and disperses application, centralized control, monitoring in real time to the system of digital court's application and development, and code stream is transmitted, the problem of system's presence monitoring.Its major function has: system's presence monitoring, fault alarm, various application program updating, court's control.
(6) COS: [Court office system], digital court's trial control system, or clerk's court's trial office application system.
COS develops to industry customer digital court of law court project construction business demand specially; A part that belongs to digital court system; Its major function is mainly operating system of user one personal-machine interface is provided, and when the user clicks respective keys, can send relevant operational order to RMS.
Claims (7)
1. digital court system that is used for long-range court's trial has all comprised digital media resource management system RMS, stream media server S MS, multi-media decoding and encoding equipment DVC, the main control system MCP of Digital Media at the request end and the receiving terminal of system; The request end is connected through network with receiving terminal, between request end and receiving terminal, is laid with remote centralized Control Server RCS; It is characterized in that the audio-video signal in the request end flows to and is:
The external equipment of request end MCP sends request end DVC coding module to after audio, video data is passed through interior video matrix and audio mix resume module;
After request end DVC coding module passes through compressed encoding with the audio-video signal that sends; Send the receiver module of request end SMS to through Ethernet; The decoder module of request end DVC can be obtained from the audio-video signal of receiving terminal from the SMS receiver module of request end through Ethernet and decode simultaneously, and decoded audio-video signal is exported to external display device and power amplifying device through request end MCP;
The receiver module of request end SMS is transmitted to it forwarding module and preserves module after receiving audio-video signal; Preserve module and audio-video signal is saved as the audio/video flow file that supply to play; And store in the local hard drive; Forwarding module is responsible for audio/video flow is sent to the SMS of receiving terminal, so that the audio/video flow that receiving terminal can the playing request end; The receiver module of request end SMS also can send the audio/video flow of receiving terminal to the DVC decoder of request end simultaneously through Ethernet;
Request end RMS is responsible for the SMS to the request end, DVC, and the control of MCP and management provide access rights to request end equipment, and to file management data base querying are provided, and download deletion; RMS can also generate the URL path of direct broadcast band for audio/video flow, and the user can pass through this path access audio/video flow;
The audio-video signal of receiving terminal is at RMS, DVC, and MCP, the signal flow among the SMS is to identical with the request end;
RCS is responsible for request end and the running status of receiving terminal in the monitoring network in network, for the both sides of system provide real-time configuration parameter and running state information;
Numeral court's trial control system COS is used to the user man-machine interface is provided, and when the user clicks respective keys, sends the associative operation order to RMS; When the user began to start long-range court's trial, described request end was a local side, and receiving terminal is a remote port;
COS is as the triggering source of the long-range court's trial of local side, and when clicking respective keys and start long-range court's trial operation, COS sends starting command through Ethernet and gives local RMS;
RMS sends to local side SMS after receiving starting command immediately, and it is live to start audio/video flow, simultaneously starting command is sent to remote port RMS, after remote port RMS receives starting command, issues remote port SMS, and it is live that notice remote port SMS starts audio/video flow;
Long-range SMS starts live back and sends the unlatching success command to long-range RMS, and transmits local RMS by long-range RMS; Also can send after local SMS startup is live and open success command to local RMS;
After the RMS of this locality receives that long-range RMS and local SMS open successful order, send the order that connects the audio frequency and video source and give long-range RMS and local SMS, after long-range RMS receives to connect the order of audio frequency and video source, can this order be sent to long-range SMS;
Long-range SMS connects success back, audio frequency and video source and sends the successful connection order to long-range RMS, and is transmitted to local RMS by long-range RMS; Local SMS also can send the successful connection order to local RMS after connecting the success of audio frequency and video source;
After the RMS of this locality receives that long-range RMS and local SMS successful connection are ordered, can return one to COS and open successful affirmation information, accomplish the flow process of opening long-range court's trial.
2. the digital court system that is used for long-range court's trial according to claim 1, after starting long-range court's trial, the signal flow that is used to switch long-range audio frequency and video source is to being:
COS connects the triggering source as long-range court's trial signal source, and when clicking the long-range court's trial of startup connection to local the demonstration, COS orders the RMS to this locality through the long-range audio frequency and video of Ethernet transmission connection source;
After local RMS receives and connects the order of long-range audio frequency and video source; Audio frequency and video source with this locality stops to record immediately; Thereupon can with all current audio/video flow files cut apart be packaged into one complete can be for behind the audio/video flow file of playing; And open recording of long-range audio frequency and video source; And the live audio frequency and video source in the live module among the local SMS changed to long-range live audio frequency and video source, and local SMS notice starts the decoder module of DVC, and the remote image of decoding output supplies display device and power amplifying device use with audio frequency;
Local RMS is after above flow processing is intact; Can send the long-range audio frequency and video of disconnection connection source orders to long-range RMS; Long-range RMS switches to local audio frequency and video source with live URL after receiving orders, with notifying long-range SMS to stop decoding, remote port just cannot see the signal in local audio frequency and video source like this; Local then RMS returns one to COS and breaks off successful affirmation information, accomplishes the flow process of breaking off long-range court's trial.
3. the digital court system that is used for long-range court's trial according to claim 1, said digital media resource management system RMS comprises:
The message event administration module is used to show all long-range court's trial message event and equipment alarm message event; Show and also do not handle long-range court's trial message event and the equipment alarm message event of not reading; Show the long-range court's trial message event and the equipment alarm message event of having checked;
Content managing module is used for by year inquiring about and showing the case trial information of opening the front yard; Show the case trial information of opening the front yard by case type; Show the case trial information of opening the front yard by court's title; And the user provides flexible inquiry mode, provides the condition of inquiry to have: case number, case type, court's trial mode, court time, court's trial numbering, court's title, judge;
The waiting administration module is used to provide the maintenance to case information; Maintenance and long-range court's trial to court's trial waiting information are provided; Set up case waiting on the same day; Provide case long-range open the court session and adjudicate the case function; Long-range information request and the native court of opening a court session that can receive that the other side law court sends initiated long-range court's trial request to other law court, and a remote interaction trial platform is provided;
System management module is used to show that the essential information of native court reaches its maintenance of information; Management maintenance trial department information; The management maintenance forensic information; The management maintenance case is by information; Management maintenance post information; Management maintenance trial font size information; Management maintenance case type information; Explicit representation is institute-level not by different level, and law courts at different levels information is safeguarded; Management maintenance party type information;
Authority management module is used to provide keeper's administering and maintaining user role and associated rights; The keeper is provided administering and maintaining user and relevant information;
Statistical analysis module, by time and measurement type statistics case, providing intuitively, chart shows; Program request and live situation are analyzed, and provided chart to show;
The Broadcast Control administration module is used for server group, server, publishing point are managed; The stored parameter setting of using native system is provided for the keeper; Configuration flow media server parameter is provided with live publishing point parameter;
Log management module is used to provide the operation of checking the user and derives journal function; Be used for search, check log-on message and court's trial information; The inquiry of program request live information is provided and derives journal function;
Centralized control module is used to the long-range adapter court's trial control of administrative staff and uses;
The monitoring of tools module is used for equipment control, the device parameter management, and monitor message is checked and is disposed; But be used to provide the warning message of management equipment.
4. the digital court system that is used for long-range court's trial according to claim 1, the said main control system MCP of Digital Media comprises:
Main control module: be used for total control module, be responsible for each module in the equipment is controlled as whole Digital Media main control system, configuration, and state-detection, and be responsible for handling process of commands and the parsing that miscellaneous equipment is sent in the local area network (LAN);
Middle control module: be used for the supplementary module of main control module, be mainly used in and be responsible for the control external equipment;
Video matrix: be used for realizing that any input of SD vision signal can switch to any output port, its input can external DVD, and it is first-class to make a video recording, and output connects monitor;
The VGA matrix: be used for realizing that any input of high-definition video signal can switch to any output port, its input can external computer, or the high definition camera; Output connects television set, display, or projector;
Audio mixing matrix: be used for each audio signal of input is carried out audio mixing, and switch to local power amplifying device or DVC coding/decoding apparatus according to demand; It is input as computer, DVD, or recording pen, and output connects power amplifying device, audio/video conference terminal, or backstage audiomonitor;
Can beg for main frame: be used to handle the open and close of the pickup of external audio input source microphone, and the volume of regulating every microphone;
Synthesizer: be used for realizing multiway images is dwindled and synthetic image by a certain percentage, make the signal that in a picture, can watch a plurality of angle cameras;
Upconverter: be mainly used in when the SD signal is imported, through after the digital processing and amplifying, it can be shown in the high definition display device image;
Frequency demultiplier: be used to be mainly used in when high-definition signal is imported, through after numeral dwindles processing, it can be shown in the SD display device image.
5. the digital court system that is used for long-range court's trial according to claim 1, the said main control system MCP of Digital Media can integrated a plurality of DVC, and perhaps DVC can be used as independent equipment and is present in the digital court system.
6. the digital court system that is used for long-range court's trial according to claim 1, said SMS comprises:
Synchronous recording module: be used for synchronous recording video, audio frequency and computer dynamic screen content VGA signal, can computer screen be attend institute's content displayed synchronous recording;
Live module: be used on network, carrying out through clean culture or multicast mode video, audio frequency, computer dynamic screen that meeting is on-the-spot live, the user can receive live video, audio frequency and computer dynamic screen content in real time through IE browser logon server; When live module is used to handle real-time when live, audio/video flow is from receiver module; When being used for process points sowing time, be used for VOD program request resume module good flow to network direct broadcasting or multicast is gone out;
VOD point broadcasting module: SMS system built-in VOD point multicast function, the user can record the file that is stored on the streaming media server through the mode program request of IE browser; The content that program request can be watched comprises video, audio frequency and computer screen content; And support multistage program request user right control;
Main control module: be used for total control module, be responsible for each module in the software is carried out thread scheduling as whole software, control, configuration, and state-detection, and the communication of intermodule is handled;
The command analysis processing module: and be responsible for handling RMS in the local area network (LAN), process of commands that DVC sends and parsing;
File is uploaded download module: be used for handling that the file of recording on the DVC is uploaded to the SMS server, also be applied to simultaneously uploading and downloading of file between the SMS server, be used to solve the data centralization storage;
Audio/video flow receiver module: the audio/video flow data that are used for handling automatic network DVC, SMS.
7. the digital court system that is used for long-range court's trial according to claim 1, said DVC comprises:
Coding unit: after being used for SD or high resolution audio and video signal with input and carrying out compressed encoding H.264, and form audio/video flow and pass to network and local memory cell;
Decoding unit: be used for that network is uploaded the audio/video flow that compresses and carry out decompress(ion), and the audio/video flow behind the decompress(ion) is formed the simulation shows signal supply to connect display device and watch;
Local memory cell can be with file storage to local hard drive; And can the present encoding audio/video flow be stored as the transport stream TS file, comprise a high definition and four tunnel high definitions, and storing process do not influence live and download function, files stored can be play with the standard multimedia player;
Query unit can be inquired about stored information, according to storage time started, label; Passage inquiry stored information, the stored information that inquires comprises: time started, concluding time, file size; Store path, timestamp pts, totalframes; Document time length, and the integrality of file, and can control the bar number that inquiry storage multimedia application is served;
The power down process unit, under the situation that DVC breaks down, the data that guarantee after it restarts to be inquired about are not made mistakes;
Interface unit can provide outside SMS to carry out the mutual interface of relevant information; Said relevant information is the start and end time label information, and the multimedia of application service size and frame number information; Interface unit can also provide mutual with the multi-medium data of external module;
The file division unit is used for audio/video flow is carried out file division;
Control unit, beginning that can control store and stopping; And the time started and the concluding time of record storage, and stamp corresponding time tag, make things convenient for query unit and stream media server S MS inquiry; The DVC control unit can be controlled hard disk and cover; And can or cover threshold values according to the scheduled time circulates to file and covers or remove; Control unit can also be realized the stored information deletion, promptly can delete specified file and catalogue; And according to the storage time started, label, passage deletion stored information;
The disk state control unit can obtain the carry state of hard disk, gross space, usage space, remaining space;
Download unit can use http to download the recording multi-media data file, 4 road functions downloaded simultaneously that provide support, and when requiring downloading to live, storage is influence not, can support breakpoint transmission; Speed of download is set; Local hard drive is used to store audio-video document.
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