CN102377987B - A kind of video monitoring system based on IMS and method - Google Patents
A kind of video monitoring system based on IMS and method Download PDFInfo
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- CN102377987B CN102377987B CN201010265084.3A CN201010265084A CN102377987B CN 102377987 B CN102377987 B CN 102377987B CN 201010265084 A CN201010265084 A CN 201010265084A CN 102377987 B CN102377987 B CN 102377987B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of video monitoring system based on IP Multimedia System (IMS), this system includes: monitor client subsystem, IMS core control part, application server subsystem and front monitoring front-end subsystem；Wherein, during business logic processing, IMS core control part it is responsible for carrying out between monitor client subsystem, application server subsystem, front monitoring front-end subsystem route and the forwarding of SIP signaling, and the foundation/dismounting of corresponding session.The present invention also accordingly discloses a kind of video frequency monitoring method based on IMS.The present invention is by providing the framework of video monitoring system based on IMS, functional entity division, relation between functional entity function, functional entity and interface, video monitoring system based on IMS and business can be realized such that it is able to embody IMS and be uniformly accessed into the technical advantages such as control, the fusion of various multimedia service and multimedia service quality reliability.
Description
Technical field
The present invention relates to Video Supervision Technique, particularly relate to a kind of based on IP Multimedia System (IP
Multimedia Subsystem, IMS) video monitoring system and method.
Background technology
In recent years, along with computer, network and image procossing, the developing rapidly of transmission technology, video is supervised
Control technology also obtain significant progress.The transmission by real-time performance media of the video monitoring system of a new generation
Thus carry out long-range video monitoring, no matter user wherever, may utilize client such as computer etc. and logs in
The Internet, connects network video monitor and control system, obtains image and sound.Video monitoring with its intuitive and convenient,
Abundant information and be widely used in many occasions, such as bank, school, hospital, community and highway communication etc..
On the other hand, the development of current full IPization accelerates the fusion of telecommunications and the Internet, IP end to end
It it is trend of network development.IMS has the following characteristics that
With access independence, use any equipment no matter user can be realized theoretically, where accessing IMS
Network can use the business of ownership place；
Unified business trigger mechanism, IMS core controls partial sterility now concrete business, all of business packet
Include the supplementary service on traditional concept all to be realized by service application platform；
Unified routing mechanism, and user-dependent data message is only stored in the ownership place of user, all and
User-dependent business also has to pass through the ownership place of user；
Unified user database, shields fixing and mobile subscriber's difference on service attribute；
Taken into full account the demand of the actual operation of operator, network frame, QoS, safety, charging and
Related specifications has all been formulated with the intercommunication aspect of other networks.
IMS is uniformly accessed into control, the fusion of various multimedia service and multimedia service quality reliability etc.
Technical characterstic and advantage are approved by telecom operators, and telecom operators are stepping up to dispose IMS core net,
And it is online progressively miscellaneous service to be moved to IMS core.
IMS is third generation partner program (3GPP, 3rd Generation Partnership Project)
Normal structure definition, be the total of the network core layer logical functional entity that be controlled IP multimedia service
Claim.IMS uses IP packet domain to control signaling and media transmission bearer path as it, uses Session Initiation Protocol to make
For call control signalling, it is achieved that the three that operational control, session control and carrying access separates, and it is at net
Advantage in terms of network fusion is paid close attention to the most widely.As ITU-T, ETSI etc. are also adopted by IMS conduct
The core network of its definition next generation network.
But, the video monitoring framework of current industry is also not based on IMS design, thus current video monitoring
System still can not realize the carrier class video monitoring of management.
Summary of the invention
In view of this, present invention is primarily targeted at a kind of video monitoring system based on IMS of offer and side
Method, it is possible to realize IMS and be uniformly accessed into control, the fusion of various multimedia service, and multimedia can be improved
Quality of service reliability.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of video monitoring system based on IP Multimedia System IMS, including: monitor client subsystem
System, IMS core control part, application server subsystem and front monitoring front-end subsystem；Wherein,
Described monitor client subsystem, for producing corresponding SIP signaling according to user operation, and by institute
State SIP signaling and control part transmission to application server subsystem by IMS core；And according to from
IMS core controls the SIP signaling of part, and corresponding information is showed user；
Described application server subsystem, for according to the described SIP signaling controlling part from IMS core
Carry out corresponding business logic processing；
Described IMS core controls part, for during business logic processing, at monitor client subsystem
System, between application server subsystem, front monitoring front-end subsystem, carry out route and the forwarding of SIP signaling, with
And the foundation/dismounting of session accordingly；
Described front monitoring front-end subsystem, for monitoring information, encoding and send；And process
From the SIP signaling of IMS core control part and reply.
This system also includes media control and storage subsystem, for the notice according to application server subsystem,
Forward the media from front monitoring front-end subsystem, distribute, transcoding, storage or clean culture turn multicast；With
And offer streaming media service；And the media data from monitor client subsystem is forwarded.
Described monitor client subsystem, is additionally operable to control from media and the display advertising of storage subsystem
To user；And control and storage subsystem transmission media to media according to user operation.
Described IMS core controls part, is additionally operable to when monitor client subsystem accesses, to described monitoring
Client-end subsystem carries out access authentication.
Described application server subsystem, is additionally operable to directly to monitor client subsystem and/or front monitoring front-end
System configures and manages.
Described front monitoring front-end subsystem, is additionally operable to directly and monitor client subsystem carries out Signalling exchange and code
Stream transmission.
A kind of video frequency monitoring method based on IMS, including:
Monitor client subsystem produces corresponding SIP signaling according to user operation, and by described SIP signaling
Control part by IMS core to send to application server subsystem；
Application server subsystem is carried out according to the described SIP signaling from IMS core control part accordingly
Business logic processing, during described business logic processing, is responsible for monitoring visitor by IMS core control part
Carry out between family terminal system, application server subsystem, front monitoring front-end subsystem SIP signaling route and
Forward, and the foundation/dismounting of corresponding session；
Described monitor client subsystem controls SIP signaling partly according to from IMS core, will be corresponding
Information shows user.
Described application server subsystem carries out phase according to the described SIP signaling from IMS core control part
The business logic processing answered is: application server subsystem notice media control and storage subsystem is to from prison
The media of control front terminal system carry out forwarding, distribute, transcoding, storage or clean culture turn multicast, and provide stream
Media services,
The method also includes: monitor client subsystem will control from media and the media exhibition of storage subsystem
Show to user.
The method also includes: when monitor client subsystem accesses, and described IMS core controls part to institute
State monitor client subsystem and carry out access authentication.
The method also includes: application server subsystem is directly to monitor client subsystem and/or front monitoring front-end
Subsystem configures and manages.
The method also includes: front monitoring front-end subsystem directly and monitor client subsystem carry out Signalling exchange and
Code stream transmits.
Present invention video monitoring system based on IMS and method, video monitoring system includes: monitor client
Subsystem, IMS core control part, the control of application server subsystem, media and storage subsystem and prison
Control front terminal system, described IMS core controls part and is used for during business logic processing, monitoring visitor
Carry out between family terminal system, application server subsystem, front monitoring front-end subsystem SIP signaling route and
Forward, and the foundation/dismounting of corresponding session.The present invention is by providing video monitoring system based on IMS
The division of framework, functional entity, relation between functional entity function, functional entity and interface, it is possible to achieve
Video monitoring system based on IMS and business such that it is able to embody IMS and be uniformly accessed into control, various many matchmakers
The technical advantages such as the fusion of body business and multimedia service quality reliability.
Accompanying drawing explanation
Fig. 1 is present invention video monitoring system based on IMS structural representation；
Fig. 2 is the structural representation of application server subsystem of the present invention；
Fig. 3 is present invention video frequency monitoring method based on IMS schematic flow sheet.
Detailed description of the invention
The basic thought of the present invention is: video monitoring system includes: monitor client subsystem, IMS core
Control part, the control of application server subsystem, media and storage subsystem and front monitoring front-end subsystem, institute
State IMS core control part for during business logic processing, in monitor client subsystem, application
Carry out route and the forwarding of SIP signaling between server subsystem, front monitoring front-end subsystem, and accordingly can
Foundation/the dismounting of words.
Fig. 1 is present invention video monitoring system based on IMS structural representation, as it is shown in figure 1, this system
Including: monitor client subsystem (CU) 11, IMS core control part (Core IMS) 12, application
Server subsystem (AS) 13, front monitoring front-end subsystem (PU) 14, media control and storage subsystem
(MCSU)15；Wherein,
Monitor client subsystem 11, for producing corresponding SIP signaling according to user operation, and by described
SIP signaling controls part 12 by IMS core and sends to application server subsystem 13；And according to coming
Control the SIP signaling of part 12 from IMS core, corresponding information is showed user；And will be from
Media control the display advertising with storage subsystem 15 to user；And according to user operation to media control and
Storage subsystem sends media.
Monitor client subsystem 11 can be the Surveillance center of specialty, Set Top Box, mobile phone, WEB client
End etc., it at least includes media decoding function, media play and display function, user control interface function,
As watch-list check, real-time video is checked, video retrieval and check, alarming processing etc..
IMS core controls part 12, for during business logic processing, at monitor client subsystem
11, carry out the route of SIP signaling between application server subsystem 13, front monitoring front-end subsystem 14 and turn
Send out, and the foundation/dismounting of corresponding session；And when monitor client subsystem 11 accesses, to described
Monitor client subsystem 11 carries out access authentication；
Application server subsystem 13, for entering according to the SIP signaling controlling part 12 from IMS core
The corresponding business logic processing of row, and realize management function；And directly to monitor client subsystem 11
And/or front monitoring front-end subsystem 14 configures and manages.
Application server subsystem 13 is capable of multiple management function, manage including user, equipment control,
Equipment incorporates into, rights management and system administration, system operation maintenance etc.；Application server subsystem carries out industry
Business logical process relates to PU/CU access, control signaling processes, video recording plan issues, alarming processing, PU
Status Change notice etc..
Fig. 2 is the structural representation of application server subsystem 13 of the present invention, as in figure 2 it is shown, application service
Device subsystem 13 farther includes: service discovering functional entity (SDF) 131, service selection functional entity
(SSF) 132 and business control function body (SCF) 133；Wherein,
Service discovering functional entity (SDF) 131, for notifying the terminal (UE) of various access Core IMS
How to find Network Video Surveillance business, after UE is successfully registered to Core IMS, subscribe to network to SDF
Video monitoring service, after SDF receives subscription request, by notification message service selection functional entity
(SSF) information returns to UE.
Service selection functional entity (SSF) 132, for providing various concrete Network Video Surveillance business to supply
User selects, and checks and browses its control point list information, warning information that be can browse through such as user, looks into
Ask the business such as video file.
Business control function body (SCF), controls merit for realizing the various service logic of Network Video Surveillance
Energy.As the request of the cradle head control of user is carried out authority qualification and control.
Front monitoring front-end subsystem 14, is used for monitoring information (such as audio frequency, video, candid photograph image or alarm signal
Breath) it is acquired, encodes and sends；And process and go forward side by side from the SIP signaling of IMS core control part
Row is replied；And alarm signal output；And directly and monitor client subsystem 11 carry out Signalling exchange and
Code stream transmits.
Media control and storage subsystem 15, for carrying out the forwarding of media, distribution, transcoding, storage, list
Broadcast and turn multicast etc.；And offer streaming media service, as Streaming Media upload, download, real-time play etc.；And
Retrieval is provided；And the media data from monitor client subsystem is forwarded.
Below the interface in Fig. 1 is illustrated:
Interface between A1:Core IMS 12 and monitor client subsystem 11, is used for processing registration, exhaling
Control, state notifying, alarm subscribing notification, parameter query and configuration, Yun Jing is made to control these signalings at Core
Route between IMS 12 and CU；
Interface between A2:Core IMS 12 and front monitoring front-end, for processing the route of the session that PU initiates,
And being sent to the signalling route of PU from other functional entitys to PU；
Interface between A3:Core IMS 12 and application service subsystem, for processing to enter between
The mutual signaling interface of row business logic processing, service request is directed to specific AS through Core IMS 12
The final process of finishing service logic, AS also passes through Core IMS 12 to the result of business and returns simultaneously
To request end；
A4: the interface between front monitoring front-end subsystem 14 and monitor client subsystem 11, for the two it
Between direct-connected signaling and the interface of direct-connected code stream；
A5: the interface between application server subsystem 13 and monitor client subsystem 11, for AS
Configuration and the interface of management to CU；CU obtains service related data, and control point list acquisition, data are looked into
The interface ask；
A6: the interface between application server subsystem 13 and front monitoring front-end subsystem 14, for AS pair
The configuration of PU and the interface of management；
A7: media control and the interface between storage subsystem and monitor client subsystem 11, for asking
Code stream, code stream is asked to issue and the interface of controlling media play；
A8: media control the interface between storage subsystem and front monitoring front-end subsystem 14, for media
Code stream request, media code stream transmission and the interface of control；
A9: media control and the interface between storage subsystem and application server subsystem 13, for asking
Ask media services address, application server subsystem 13 to distribution of media portion in media control and storage subsystem
The interface of the management and running divided；
In actual applications, can be according to following principle construction video monitoring system based on IMS:
Dispose or utilize existing IMS network, Core IMS core network can carry for Network Video Surveillance business
For service；
Set up the application server subsystem for Network Video Surveillance business, at least include service discovering function
Entity (SDF), service selection functional entity (SSF) and business control function body (SCF).SDF and
Interface between SCF and Core IMS uses the ISC interface of IMS standard definition, and interface protocol includes
SIP/SDP；
The media setting up video monitoring control and storage subsystem, at least include media storage function, and media divide
Sending out function, media management and search function, streaming media service provides function.Aforesaid application server subsystem
Media control and storage subsystem can be scheduling by system, ask and obtain media services address.Media control
Sip message interface is used between system and storage subsystem and application service subsystem；
Set up video monitoring front-end subsystem, at least include for audio-video collection function, audio/video coding merit
Energy, media transmission function, warning information acquisition function, alarm event process function.PU subsystem can lead to
Cross described Core IMS registration to described AS subsystem and from described AS system acquisition service；PU
Subsystem can carry out the request of media code stream to described MCSU subsystem, plays control and obtain code stream；
Set up video monitoring client terminal subsystem, it is provided that the user interface of video monitoring service, CU subsystem
The request of media code stream can be carried out to described MCSU subsystem, play control and obtain code stream.Its with
Following the Gm in IMS between Core IMS, interface protocol includes SIP/SDP.CU subsystem can
With by described Core IMS registration to described AS subsystem and from described AS system acquisition service；
After monitor client (CU) is successfully registered to Core IMS, subscribe to video by sip message to SDF
Monitoring business, SDF returns concrete service selection functional entity (SSF) information by sip message；
Monitor client (CU) and front monitoring front-end (PU) are all as the subscriber equipment (UE) in Core IMS,
Select concrete video monitoring service by the service selection functional entity (SSF) of AS, CU and PU with
Interface between service selection functional entity (SSF) uses HTTP interface agreement.CU and PU and media
Control to use SIP/RTSP/RTP interface protocol between storage subsystem (MCSU).
Fig. 3 is present invention video frequency monitoring method based on IMS schematic flow sheet, as it is shown on figure 3, the method
Including:
Step 301: monitor client subsystem produces corresponding SIP signaling according to user operation, and by institute
State SIP signaling to be sent to application server subsystem by IMS core control part 12.
Step 302: application server subsystem carries out corresponding business according to the described SIP signaling received
Logical process, during this business logic processing, is controlled part 12 by IMS core and is responsible for monitoring client
Carry out the route of SIP signaling between terminal system, application server subsystem, front monitoring front-end subsystem and turn
Send out, and the foundation/dismounting of corresponding session.
Application server subsystem carries out phase according to the described SIP signaling from IMS core control part 12
The business logic processing answered can be: application server subsystem notice media control and storage subsystem is to coming
Carry out forwarding from the media of front monitoring front-end subsystem, distribute, transcoding, storage or clean culture turn multicast, Yi Jiti
For streaming media service, accordingly, monitor client subsystem will control from media and the matchmaker of storage subsystem
Body display is to user.
Step 303: monitor client subsystem according to from IMS core control part 12 SIP signaling,
Corresponding information is showed user.
Preferably, the method also includes: when monitor client subsystem accesses, and described IMS core controls
Part carries out access authentication to described monitor client subsystem.
Preferably, the method also includes: application server subsystem directly to monitor client subsystem and/
Or front monitoring front-end subsystem configures and manages.
Preferably, the method also includes: front monitoring front-end subsystem is directly and monitor client subsystem carries out letter
Order is mutual and code stream transmits.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention
Enclose.
Claims (10)
1. a video monitoring system based on IP Multimedia System IMS, it is characterised in that this system
Including: monitor client subsystem, IMS core control part, application server subsystem and front monitoring front-end
Subsystem；Wherein,
Described monitor client subsystem, for producing corresponding SIP signaling according to user operation, and by institute
State SIP signaling and control part transmission to application server subsystem by IMS core；And according to from
IMS core controls the SIP signaling of part, and corresponding information is showed user；
Described application server subsystem, for according to the described SIP signaling controlling part from IMS core
Carry out corresponding business logic processing；And to described monitor client subsystem and described front monitoring front-end subsystem
System is registered；
Described IMS core controls part, for during business logic processing, at monitor client subsystem
System, between application server subsystem, front monitoring front-end subsystem, carry out route and the forwarding of SIP signaling, with
And the foundation/dismounting of session accordingly；
Described front monitoring front-end subsystem, for monitoring information, encoding and send；And process
From the SIP signaling of IMS core control part and reply；
Described application server subsystem includes: service discovering functional entity SDF, service selection functional entity
SSF and business control function body SCF；Wherein,
Described SDF, for notifying that the monitor client subsystem accessing described IMS core control part finds
Network Video Surveillance business；Wherein, described monitor client subsystem is successfully registered to described IMS core control
After part processed, subscribing to Network Video Surveillance business to described SDF, described SDF receives the request of subscription
After, by notification message, described SSF information is returned to described monitor client subsystem；
Described SSF, is used for providing Network Video Surveillance business to select for user；
Described SCF, controls function for realizing the service logic of Network Video Surveillance.
System the most according to claim 1, it is characterised in that this system also includes media control and deposits
Storage subsystem, for the notice according to application server subsystem, to the media from front monitoring front-end subsystem
Carry out forwarding, distribute, transcoding, storage or clean culture turn multicast；And offer streaming media service；And to coming
Forward from the media data of monitor client subsystem；
Described monitor client subsystem, is additionally operable to control from media and the display advertising of storage subsystem
To user；And control and storage subsystem transmission media to media according to user operation.
System the most according to claim 1 and 2, it is characterised in that
Described IMS core controls part, is additionally operable to when monitor client subsystem accesses, to described monitoring
Client-end subsystem carries out access authentication.
System the most according to claim 1 and 2, it is characterised in that
Described application server subsystem, is additionally operable to directly to monitor client subsystem and/or front monitoring front-end
System configures and manages.
System the most according to claim 1 or claim 2, it is characterised in that
Described front monitoring front-end subsystem, is additionally operable to directly and monitor client subsystem carries out Signalling exchange and code
Stream transmission.
6. a video frequency monitoring method based on IMS, it is characterised in that the method includes:
Monitor client subsystem produces corresponding SIP signaling according to user operation, and by described SIP signaling
Control part by IMS core to send to application server subsystem；
Application server subsystem is carried out according to the described SIP signaling from IMS core control part accordingly
Business logic processing and described monitor client subsystem and front monitoring front-end subsystem are registered, described
During business logic processing, IMS core control part it is responsible at monitor client subsystem, application clothes
Business carries out route and the forwarding of SIP signaling, and corresponding session between device subsystem, front monitoring front-end subsystem
Foundation/dismounting；
Described monitor client subsystem controls SIP signaling partly according to from IMS core, will be corresponding
Information shows user；
Wherein, the service discovering functional entity SDF notice of described application server subsystem accesses described IMS
The monitor client subsystem of core control portions finds Network Video Surveillance business；Wherein, described monitoring visitor
After family terminal system is successfully registered to described IMS core control part, subscribe to network video to described SDF
Frequently monitoring business, after described SDF receives subscription request, by notification message described application server
The service selection functional entity SSF information of system returns to described monitor client subsystem；
Service selection functional entity SSF of described application server subsystem provides Network Video Surveillance business to supply
User selects；
The business control function body SCF of described application server subsystem realizes the business of Network Video Surveillance
Logic control function.
Method the most according to claim 6, it is characterised in that described application server subsystem according to
The described SIP signaling from IMS core control part carries out corresponding business logic processing and is: application service
Device subsystem notice media control and the media from front monitoring front-end subsystem are forwarded by storage subsystem,
Distribution, transcoding, storage or clean culture turn multicast, and provide streaming media service,
The method also includes: monitor client subsystem will control from media and the media exhibition of storage subsystem
Show to user.
8. according to the method described in claim 6 or 7, it is characterised in that the method also includes: in monitoring
When client-end subsystem accesses, described monitor client subsystem is connect by described IMS core control part
Enter certification.
9. according to the method described in claim 6 or 7, it is characterised in that the method also includes: application clothes
Monitor client subsystem and/or front monitoring front-end subsystem are directly configured and manage by business device subsystem.
10. according to the method described in claim 6 or 7, it is characterised in that the method also includes: monitoring
Front terminal system is directly and monitor client subsystem carries out Signalling exchange and code stream transmission.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010265084.3A CN102377987B (en) | 2010-08-20 | 2010-08-20 | A kind of video monitoring system based on IMS and method |
| PCT/CN2011/078465 WO2012022252A1 (en) | 2010-08-20 | 2011-08-16 | System and method for video monitoring based on ims |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010265084.3A CN102377987B (en) | 2010-08-20 | 2010-08-20 | A kind of video monitoring system based on IMS and method |
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| Publication Number | Publication Date |
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| CN102377987A CN102377987A (en) | 2012-03-14 |
| CN102377987B true CN102377987B (en) | 2016-09-28 |
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| WO (1) | WO2012022252A1 (en) |
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| CN103327374B (en) * | 2012-10-26 | 2018-08-21 | 南京中兴软件有限责任公司 | A kind of monitoring method and network television-set top-set-box |
| CN103929623B (en) * | 2014-04-29 | 2017-06-16 | 浙江宇视科技有限公司 | Video data handling procedure in a kind of video monitoring system |
| CN108270995B (en) * | 2017-01-03 | 2021-01-15 | 中国移动通信有限公司研究院 | Communication method and system between terminal and video monitoring equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913461A (en) * | 2006-08-30 | 2007-02-14 | 北京天地互连信息技术有限公司 | Remote vedio monitoring system based on next generation interconnection network and its implementing method |
| CN101262490A (en) * | 2008-02-29 | 2008-09-10 | 中兴通讯股份有限公司 | Monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080158336A1 (en) * | 2006-10-11 | 2008-07-03 | Richard Benson | Real time video streaming to video enabled communication device, with server based processing and optional control |
| CN101453477B (en) * | 2007-12-07 | 2012-04-04 | 华为技术有限公司 | Method and apparatus for media content uploading in real-time |
-
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- 2010-08-20 CN CN201010265084.3A patent/CN102377987B/en not_active Expired - Fee Related
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- 2011-08-16 WO PCT/CN2011/078465 patent/WO2012022252A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913461A (en) * | 2006-08-30 | 2007-02-14 | 北京天地互连信息技术有限公司 | Remote vedio monitoring system based on next generation interconnection network and its implementing method |
| CN101262490A (en) * | 2008-02-29 | 2008-09-10 | 中兴通讯股份有限公司 | Monitoring system |
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| WO2012022252A1 (en) | 2012-02-23 |
| CN102377987A (en) | 2012-03-14 |
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