CN101442667A - Interworking system for operation class video monitoring system - Google Patents
Interworking system for operation class video monitoring system Download PDFInfo
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Abstract
The invention discloses a carrier-class network video monitoring system and a carrier-class network video monitoring method. The system comprises a plurality of domains, wherein each domain comprises a peripheral unit (PU), a client unit (CU) and a central service platform, and the peripheral unit (PU), the client unit (CU) and the central service platform have access to an IP bearer network respectively. The method is characterized in that the domains are interconnected through the IP bearer network to realize the intercommunication of two layers, namely signaling and media; and the domains adopt a flat networking mode to be interconnected.
Description
Technical field
The present invention relates generally to video monitoring system, and relate in particular to a kind of networking operation level intercommunicating system that is used for video monitoring system.
Background technology
At present, many information technologies enterprise progressively enters the security protection service field, and has therefore improved the scientific and technological level of security protection service field.Along with development of technology, the significant progress that the safety monitoring technology also obtains.Up to now, the development that is used for the video monitoring technology of safety monitoring service experienced the simulation epoch, digital Age, long-range epoch.
Now, network is universal day by day, and the digitlization process of video monitoring technology also begun and obtained certain development, and therefore, many people begin to consider the two is combined, so that the service that has advantage more to be provided.For example, China Telecom has released networked video moniotring and controlling system in operation level.
The video monitoring system of prior art as shown in Figure 1.Fig. 1 shows the video monitoring system of individual domain, and this system comprises as lower unit:
-front end unit (PU) is used to realize the functions such as collection, buffer memory, coding, storage and transmission to audio/video information, warning information etc., and the control command that can come automatic network.Front end unit (PU) comprises following equipment without limitation: video camera, The Cloud Terrace, video server, warning input-output equipment etc.
-client unit (CU) is used to the client to present the service that system provides, and for example, can be used to browse and control the system of far-end video.Client unit can display of video content and audio plays content, for example, can be used to decode, play and controls real-time or historical audio frequency and/or video content.Client unit can also realize management function, and for example, it can be used to realize user management, service fulfillment and chain of command, realization system maintenance, realize receiving a crime report and function such as video wall.
-center service platform, at the networked video moniotring and controlling system in operation level of prior art, center service platform changes Dispatching Unit (VTDU) by center management server (CMS), authentication/authentication/charging (AAA) server, video and network video recording unit (NRU) is formed.
Wherein, center management server is the core cell of center service platform, can realize that access, signaling to front end unit and client unit transmitted to handle and to system and management of information thereof etc.
Video changes Dispatching Unit can realize audio frequency and video request, reception, forwarding, distribution.Wherein, can dispose described video by multi-stage cascade or distributed mode and change Dispatching Unit.
Network video recording unit can be realized video storage, retrieval and support video playback.Can dispose described network video recording unit by distributed mode.
The defective of described prior art is that this video monitoring system is the video monitoring system of individual domain, does not realize between each territory interconnecting.Therefore, each service platform can not be realized the cross-platform scheduling of video resource just as information island one by one.For transprovincially, the user that strides districts and cities uses, this system is extremely inconvenience.
In the applying date is to be that on July 12nd, 2006, application people disclose a kind of network video monitor and control system among Shanghai Telecommunications Technological Research Institute, the Chinese patent invention ZL 200410016852.6 (documents 1) of denomination of invention for " network video monitor and control system " March 10, Granted publication day in 2004, and this patent all is incorporated herein by reference at this.In documents 1 disclosed network video monitor and control system, center service platform, front terminal system and client unit subsystem are linked to each other by the IP bearer network.
In the applying date is on November 15th, 2005, open day to be that on April 19th, 2006, application people are to disclose a kind of networked video moniotring and controlling system in operation level in the Chinese patent application 200510110364.6 (documents 2) of " networked video moniotring and controlling system in operation level " for Shanghai Telecommunications Technological Research Institute, denomination of invention, and this patent application all is incorporated herein by reference at this.In documents 1 disclosed network video monitor and control system, center service platform, front terminal system and client unit subsystem are linked to each other by the IP bearer network.In addition, in documents 2, also disclose mode, set up video surveillance network with tree structure by classification.
In documents 1 and 2, set up video surveillance network in a concentrated manner.This concentrated mode has following shortcoming.At first, the communication between the same area does not all need to transfer by Centroid, and this can make that the load of Centroid is very big, and probably causes the congested of Centroid.Secondly, for logically belonging to not two terminals of same area, even they physically distance very near and they between have direct network and connect, the communication between them also needs to carry out the signaling transfer by Centroid, thereby causes the reduction of system effectiveness.In addition, if adopt the way that a certain user concentrated area is inserted a platform, this will make the user can't enjoy the premium properties that the carrier class business network is brought.In large-scale application, when a certain platform can't satisfy, system need be distributed in a plurality of platforms, thereby had lost the integrality of system, and unified scheduling is extremely difficult.
In sum, need solve by effective technical means interconnect, the problem of multi-platform resource-sharing, to realize networked platform.
Summary of the invention
In order to address the above problem, the present invention has designed the intercommunicating system of operation class video monitoring system, is used to realize that the flattening of a plurality of video monitoring platforms interconnects, accomplish the whole network resource unified scheduling, share.
According to a first aspect of the invention, a kind of networked video moniotring and controlling system in operation level that is used for is provided, this system comprises a plurality of territories, wherein, each territory comprises: front end unit, client unit and center service platform, and described front end unit, client unit and center service platform insert the IP bearer network respectively, it is characterized in that, described a plurality of territory is interconnected by the IP bearer network, and described a plurality of territories adopt the flattening networking mode to be interconnected.
An embodiment according to a first aspect of the invention, described center service platform comprises that also center management server and video change Dispatching Unit, wherein, between the center management server in each territory, carry out signaling communication, and between front end unit, client unit and the video commentaries on classics Dispatching Unit in each territory, carry out media communication.
Another embodiment according to a first aspect of the invention, center management server storage platform static routing table, the platform static routing table is preserved the address of the center management server in each territory, wherein, between the center management server in each territory, message is carried out route according to the platform static routing table.
Another embodiment according to a first aspect of the invention, user expectation in first territory is visited before the front end unit in second territory, by the center management server in described first territory and the center management server in described second territory described front end unit is incorporated into to this client.
Another embodiment according to a first aspect of the invention, described client unit comprises the media decodes plug-in unit of aiming field, is used for showing when aiming field front end unit to this client is incorporated in user expectation visit into the video content of this front end unit.
Another embodiment according to a first aspect of the invention, when the client in the strange land during by client unit visit front end unit, Media Stream without the client under the video in territory change Dispatching Unit.
According to a second aspect of the invention, a kind of method that is used to run grade Network Video Surveillance is provided, in networked video moniotring and controlling system in operation level, comprise a plurality of territories, wherein, each territory comprises: front end unit, client unit and center service platform, described front end unit, client unit and center service platform insert the IP bearer network respectively, it is characterized in that, described method comprises:
By the IP bearer network described a plurality of territories are interconnected; And
Between described a plurality of territories, adopt flattening connected network communication pattern to communicate.
An embodiment according to a second aspect of the invention, described center service platform comprises that also center management server and video change Dispatching Unit, and described method also comprises: carry out signaling communication between the center management server in each territory, and carry out media communication between front end unit, client unit and the video commentaries on classics Dispatching Unit in each territory.
Another embodiment according to a second aspect of the invention, described center management server storage platform static routing table, the platform static routing table is preserved the address of the center management server in each territory, wherein, described method also comprises: between the center management server in each territory message is carried out route according to the platform static routing table.
Another embodiment according to a second aspect of the invention, described method also comprises: the user expectation in first territory is visited before the front end unit in second territory, by the center management server in described first territory and the center management server in described second territory described front end unit is incorporated into to this client.
Another embodiment according to a second aspect of the invention, described method also comprises: by the media decodes plug-in unit that is used for aiming field that comprises in the described client unit, show the video content of this front end unit when front end unit to this client is incorporated in user expectation visit into.
Another embodiment according to a second aspect of the invention, described method also comprises: when the client in the strange land during by client unit visit front end unit, without the client under the video in territory change Dispatching Unit and transmit Media Stream.
By using method of the present invention, can be so that realize the intercommunication of signaling, two aspects of medium between a plurality of operation class video monitoring system, make the user of an operation class video monitoring platform can have the resource of a plurality of platforms and even the whole network, realize managing flexibly, having access to.Therefore, the invention provides operation class video monitoring system framework a kind of novelty, multiple domain.
In the present invention, by adopting the network configuration of flattening, can omit Centroid, thereby can not impact Network Transmission owing to the load bottleneck of Centroid.Therefore, by adopting the network configuration of flattening, can utilize the advantage of IP network more fully.In addition, by adopting flattening interconnection mode of the present invention, can also neatly a plurality of territories be interconnected to realize intercommunication.
In addition, in the present invention, between the center management server in each territory, only carry out signaling communication, therefore, can reduce the load of center management server.
In addition, can also support client's roaming according to operation class video monitoring system of the present invention.In addition, when the client roams, can select optimum network path, thereby save network provider's network transmission resource.
Description of drawings
With reference to accompanying drawing, according to following detailed, can be expressly understood the present invention more, wherein:
The structure chart of Fig. 1 networked video moniotring and controlling system in operation level individual domain;
Fig. 2 networked video moniotring and controlling system in operation level flattening connected network communication schematic diagram;
The flow chart that Fig. 3 cross-domain information according to the present invention is transmitted;
Fig. 4 is used for the flow chart that equipment incorporates into according to of the present invention;
Fig. 5 is according to the flow chart that is used to start the process of real-time video of the present invention; And
Fig. 6 is according to the schematic diagram of media data roaming of the present invention.
Concrete true mode
For the sake of simplicity and for the purpose of clear, the unit in the accompanying drawing needn't proportionally be drawn, and in different accompanying drawings, same reference numbers is represented identical unit.In addition, concisely and not can aspect unnecessary, make the present invention fuzzy for what describe, and omit description and details about known steps and unit.
Those of ordinary skill in the art should be understood that the general description of front and following detailed give an example to invention and illustrate, rather than in order to limit the invention.
Below by example technical scheme of the present invention is described.
Fig. 2 shows network topology structure figure according to an embodiment of the invention.Figure 2 illustrates three territories, is respectively territory A, B and C.Each territory comprises center service platform, front end unit and client unit, and wherein, center service platform comprises that center service manager, video change Dispatching Unit and network video recording unit.Each territory is a basic operation platform.The video monitoring system of individual domain is commonly known in the art, for example, and as the described single domain of earlier in respect of figures 1 system, and the single domain system described in documents 1 and 2, wherein, documents 1 and 2 all is incorporated herein by reference at this.
Adopt to carry out interconnected according to the present invention to each territory by the pattern of IP bearer network flattening connected network communication pattern.Below, with reference to Fig. 2 described flattening connected network communication pattern is described.
In flattening connected network communication pattern, each territory is in the status of equity each other in network, and the communication between each territory does not need to control through more senior control unit.
Communication between each territory is divided into signaling communication and media communication two parts.
Between the center management server (CMS) in each territory, carry out signaling communication.
Media communication comprises the transmission of medium and the communication of media interviews control signaling.Wherein, change between the Dispatching Unit (VTDU) at the video in each territory, carry out described media communication between the front end unit (PU) in each territory and the client unit (CU).
Interconnected communication can be carried out with a plurality of territories in each territory.For realizing cross-domain visit, between the CMS of each platform, use " platform static routing table " to realize the message route.For example, when business relations took place for platform A and platform B, the CMS of platform A need register to the CMS of platform B, registered to the CMS of platform A with the CMS of rear platform B again.In the CMS of each platform, only comprise the route record that the platform of interconnect services is arranged with it.When the address of a platform changes, need in the platform static routing table of each other platform that business relations is arranged with it, upgrade the platform address of described variation.In addition,, can carry out standardization to message format and communication protocol between each territory according to the present invention.
As shown in Figure 2, according to flattening interconnected communication pattern of the present invention, signaling communication is transmitted between each center management server (CMS), and media communication changes between Dispatching Unit at front end unit, client unit and video and carries out.As shown in Figure 2, have reference point between each center management server (CMS), for example reference point M, N, O, the agreement at each reference point place is consistent.When a territory user wishes to visit foreign lands' resource, the center management server in this territory (CMS) is searched at static routing table according to Target id in the instruction, finding the address of target's center's management server (CMS), and instruction is forwarded to purpose center management server (CMS) according to this address.
Media communication can adopt host-host protocol and the decoding plug-in interface protocol of predesignating.For example, cross-domain media delivery can adopt the host-host protocol package of predesignating to transmit.After in aiming field transmission information being unpacked, utilize the decoding plug-in of predesignating to reduce video, the wherein said decoding plug-in of predesignating is according to the described decoding plug-in interface protocol design of predesignating.In one embodiment, can general plug-in unit be set in client unit, for example, this general plug-in unit can integratedly be used for the coding/decoding method of all front end units.In another embodiment, can be the decoding plug-in interface of front end unit and client unit required standard in advance according to system of the present invention.Therefore,, can realize cross-domain media communication according to the present invention, and cross-domain video monitoring.
System according to the present invention operates according to following flow process:
1. at first the front end unit of the desired visit of client is incorporated into to this client, wherein, described front end unit can be in same territory with the client or can be in different territories;
2. after equipment incorporated into, the client can visit the front end unit that incorporates into to it by its client unit request; And
3. set up the video transmission passage by the scheduling of CMS at client's client unit and target device (for example, front end unit, VTRU or NRU etc.), thereby client unit can be visited the video content of front end unit.
3-6 specifically describes each process of system according to the invention operation with reference to the accompanying drawings.
At first, how to describe in pass-along message between the same area not.Fig. 3 has specifically described how to carry out the process that cross-domain information is transmitted between different territories.
I. cross-domain information transmission
Fig. 3 shows the flow chart that cross-domain information is transmitted that carries out according to an embodiment of the invention.Client unit can obtain the ID of its target front end unit that will visit in advance, that is, and and Target id.According to the present invention, the first six digits of Target id is the CMSID of target front end unit place CMS.Therefore, according to Target id, the CMS at target front end unit place can judge in the CMS system.Fig. 3 shows and carry out the flow process that cross-domain information is transmitted between two CMS in the same area not, and idiographic flow is as follows:
1. initiate CMS and receive the target access request from client unit;
2. initiate target front end unit that CMS judges that client unit asks whether under this territory;
If the target front end unit of being asked not under this territory, then obtain the CMSID of target CMS in the territory at target front end unit place by Target id, initiate CMS and in the platform static routing table, search target CMS address, and the target CMS address of passing through to be found sends to target CMS with request according to this CMSID;
4. target CMS receives described request and it is handled;
5. target CMS is to initiating the CMS return results.
In each process below, therefore the message transmission between CMS and CMS, is not described in detail as described above with reference to Figure 3 below.
According to the present invention, can utilize in client unit before the video content of front end unit, need this front end unit is incorporated into to this client unit.
II. equipment incorporates into
If in same territory, then only need writing at database, front end unit and client be used for incorporating this front end unit into corresponding information to this client.
If front end unit and client unit in different territories, are then handled by flow performing shown in Figure 4, idiographic flow is as follows:
1. the territory CMS at place, telecom client end unit forward end unit sends request, and so that this front end unit is plan to the client who asks, wherein, described telecom client end unit for example is system manager etc.;
2. the territory CMS at front end unit place judges whether this client is the client of foreign lands;
3. if this client is the client of foreign lands, whether then the territory CMS at front end unit place judges between the territory at the current field (territory at front end unit place) and client place has route to get in touch; If had the route contact between the two, then jumped to the 7th step;
4. if still do not have contact between two territories, then fill in the address (CMS address) in the territory at client place among the territory CMS at place, forward end unit, and, the territory CMS at front end unit place registers to the territory at client place CMS, for example, the information of being registered can comprise CMSID, the network address, actual place etc.;
5. the territory CMS at client place judges whether to allow the territory at front end unit place and this territory to set up route to get in touch;
6. if permit to set up contact, then the territory CMS at client place again the territory CMS at place, forward end unit register;
7. the territory CMS at front end unit place incorporates request into to the territory at client place CMS transmitting apparatus;
8. the territory CMS slave unit at client place incorporates in the request information such as the Target id that extracts headend equipment, title into, and described information and client unit are stored in the database accordingly.
According to the present invention, a front end unit can be incorporated into to one or more clients, and in the latter case, a plurality of clients can a shared front end unit.
After incorporating into front end unit to the user, this user can visit the video content that front end unit provides.Below, with reference to Fig. 5 the process that real-time video is browsed that starts is described.
III. starting real-time video browses
After telecom client end (telecommunication administration personnel) incorporates into front end unit to the client, during territory the client logins it by its client under, can on client unit, show the equipment that incorporates into to this client, for example, this client can identify the real-time video of asking to visit certain front end unit by clicking corresponding apparatus.As shown in Figure 5, it is as follows to start the process that real-time video browses.
1. client unit wherein, is carried information such as front end unit ID, channel number to the real-time video of initiating certain front end unit of CMS (the territory CMS at client place) request visit in the access request;
2. initiate CMS and judge whether this client unit is under the situation of strange land visit.If the situation of strange land visit is then handled CU section route (that is the situation of media data roaming) by the flow process of Fig. 6.In addition, initiating CMS needs also to judge that front end unit is whether in this territory: if in this territory, then directly form the media interviews route and need not to ask to foreign lands again by initiating CMS;
3. if front end unit in foreign lands, is then initiated the territory CMS (target CMS) that CMS sends to described access request at the front end unit place;
4. target CMS receives described access request, and by (for example carrying out alternately with front end unit, VTDU, determine access port), and form aiming field media interviews route, the destination equipment of this aiming field media interviews route for example can be front end unit, VTDU or NRU etc.Target CMS is that described aiming field media interviews route produces a Call_ID;
5. if the destination of described aiming field media interviews route is a front end unit, then target CMS forward end unit sends described Call_ID;
6. target CMS each VTDU on described aiming field media interviews route sends media interviews address, Call_ID, and wherein, described VTDU needs to initiate to ask and the media channel of foundation and destination address.
7. target CMS determines the client unit required reference address that conducts interviews, and for example, carries out the address of the VTDU or the front end unit of interface in the aiming field with the territory at client place.Target CMS returns to initiation CMS with described reference address and Call_ID;
8. initiate CMS by determining media interviews route in this territory (that is, initiating territory media interviews route) alternately with the VTDU that initiates in the territory;
9. initiate CMS and send media interviews address, Call_ID to each VTDU that initiates on the territory media interviews route;
10. initiate CMS and return media interviews address, Call_ID to client unit;
11-13. between client unit and front end unit, via described each VTDU (each VTDU in aiming field and the initiation territory), ask to set up media channel respectively at each section, wherein, described request is carried Call_ID, PUID and gap marker thereof;
14. requested each equipment is verified Call_ID, afterwards, finishes the foundation of media channel respectively at each section, thereby forms a video transmission passage.In addition, in one embodiment, described system can also comprise authentication/authentication/charging (AAA) server, for example, final stage media providing device before client unit (for example, can be VTDU or PU etc.) when sending video data, client unit can produce charge information in beginning, and charge information is offered described authentication/authentication/accounting server.
After forming the video transmission passage, can video content be passed to client unit from front end unit.Client unit comprises the media decodes plug-in unit of aiming field, perhaps general media decodes plug-in unit.So, can show the video content that incorporates into to described client's front end unit in client.
Below, with reference to Fig. 6 the situation that media data is roamed is described.
IV. media data roaming
Can also support the media data roaming of client unit when the access platform of strange land according to system of the present invention, wherein, it is that it realizes that media data transmits that described client unit can be come by means of location VTDU.
For example, when client unit was visited front end unit in its residing place, the edge C MS in this place can be it medium route service is provided.Below, illustrate the exemplary embodiment that media data is roamed with reference to Fig. 6.
Fig. 6 shows the schematic diagram of media data roaming, and wherein, CUa is the client unit under the CMSa, and User1 is the user under the CUa, and wherein, if User1 wishes the front end unit PUa in districts and cities B visit districts and cities A, then its client unit CUa still inserts CMSa.As shown in Figure 6, the process of User1 visit PUa is as follows:
1.User1 send the request that PUa is conducted interviews by CUa.CMSa is chosen at the edge C MS (being CMSb) of access locations according to specified User1 access locations in the request in the example of Fig. 6;
2.CMSa described access request is sent to CMSb;
3.CMSb be that described access request is determined the route in this territory, and routing iinformation announced to its VTDU (in example shown in Figure 6, VTDUb).Then, CMSb sends back to CMSa with the media interviews address.For example, in example shown in Figure 6, described media interviews address is the address of VTDUb;
4.CMSa be that described access request is determined the route in this territory, and routing iinformation announced its VTDU (in example shown in Figure 6, VTDUa).CMSa also sends to CUa (User1) with the media interviews address of front end unit PUa; And
5. ask respectively to connect at each section.For example, in example shown in Figure 6, form the video transmission passage via CUa, VTDUb, VTDUa and PUa.
Can realize method and system of the present invention by variety of way.For example, can by software, hardware, firmware with and combination in any realize method and system of the present invention.The order of top method steps only adopts for illustrative purpose, unless clear and definite explanation, the step of method of the present invention is not limited to top specifically described order.In addition, in certain embodiments, the program that the present invention can also be presented as on recording medium to be write down, it comprises the machine readable instructions that is used to realize the method according to this invention.
Although specific embodiment of the present invention is described in detail above by example,, those of ordinary skill in the art should be appreciated that above-mentioned example only is illustrative and be not to be limitation of the present invention.Those of ordinary skill in the art should be understood that can make modification to the foregoing description under the situation that does not break away from the spirit and scope of the present invention.Scope of the present invention is limited to the appended claims.
Claims (12)
1. one kind is used for networked video moniotring and controlling system in operation level, this system comprises a plurality of territories, wherein, each territory comprises: front end unit (PU), client unit (CU) and center service platform, described front end unit (PU), client unit (CU) and center service platform insert the IP bearer network respectively, it is characterized in that, described a plurality of territories are interconnected by the IP bearer network, and described a plurality of territories adopt the flattening networking mode to be interconnected.
2. according to the system of claim 1, wherein, described center service platform comprises that also center management server (CMS) and video change Dispatching Unit (VTDU), wherein, between the center management server in each territory, carry out signaling communication, and between front end unit, client unit and the video commentaries on classics Dispatching Unit in each territory, carry out media communication.
3. according to the system of claim 2, wherein, center management server storage platform static routing table, the platform static routing table is preserved the address of the center management server in each territory, wherein, between the center management server in each territory, message is carried out route according to the platform static routing table.
4. according to the system of claim 1, wherein, user expectation in first territory is visited before the front end unit in second territory, by the center management server in described first territory and the center management server in described second territory described front end unit is incorporated into to this client.
5. according to the system of claim 4, wherein, described client unit comprises the media decodes plug-in unit of aiming field, is used for showing when front end unit to this client is incorporated in user expectation visit into the video content of this front end unit.
6. according to the system of one of claim 1-5, wherein, when the client in the strange land during by client unit visit front end unit, Media Stream without the client under the video in territory change Dispatching Unit.
7. method that is used to run grade Network Video Surveillance, in networked video moniotring and controlling system in operation level, comprise a plurality of territories, wherein, each territory comprises: front end unit (PU), client unit (CU) and center service platform, described front end unit (PU), client unit (CU) and center service platform insert the IP bearer network respectively, it is characterized in that described method comprises:
By the IP bearer network described a plurality of territories are interconnected; And
Between described a plurality of territories, adopt flattening connected network communication pattern to communicate.
8. according to the method for claim 7, wherein, described center service platform comprises that also center management server (CMS) and video change Dispatching Unit (VTDU), and described method also comprises: carry out signaling communication between the center management server in each territory, and carry out media communication between front end unit, client unit and the video commentaries on classics Dispatching Unit in each territory.
9. method according to Claim 8, wherein, described center management server storage platform static routing table, the platform static routing table is preserved the address of the center management server in each territory, wherein, described method also comprises: between the center management server in each territory message is carried out route according to the platform static routing table.
10. according to the method for claim 7, also comprise: the user expectation in first territory is visited before the front end unit in second territory, by the center management server in described first territory and the center management server in described second territory described front end unit is incorporated into to this client.
11. the method according to claim 10 also comprises:, when front end unit to this client is incorporated in user expectation visit into, show the video content of this front end unit by the media decodes plug-in unit that is used for aiming field that comprises in the described client unit.
12. the method according to one of claim 7-11 also comprises: when the client in the strange land during by client unit visit front end unit, without the client under the video in territory change Dispatching Unit and transmit Media Stream.
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| CN101729865B (en) * | 2009-10-30 | 2011-09-21 | 深圳市迪威视讯股份有限公司 | Transcoder ofuniversal video monitoring platform |
| CN102387038A (en) * | 2011-10-20 | 2012-03-21 | 赛特斯网络科技(南京)有限责任公司 | Network video fault positioning system and method based on video detection and comprehensive network management |
| CN102547251A (en) * | 2012-02-29 | 2012-07-04 | 林青 | Network audio/video monitoring framework and communication method thereof |
| CN102630062A (en) * | 2012-03-07 | 2012-08-08 | 深圳市信义科技有限公司 | Intelligent video routing method based on video scheduling |
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| CN102769739A (en) * | 2012-06-21 | 2012-11-07 | 北京交通大学 | Device and method for achieving interconnection and intercommunication of video monitoring systems |
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