Distributed node video surveillance system and control method thereof |
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IPC classes for russian patent Distributed node video surveillance system and control method thereof (RU 2518194):
    
 Method and system for recovery of video surveillance service / 2517330
Invention relates to video surveillance. proposed method comprises the steps of separation of data on points of presence (POP) to different types and formulation of measures for recovery of video surveillance in compliance with different failure types. Then, data of current POP failure is received to take the measures for system recovery in compliance with received data on failure type. Step of measures execution comprises switching of video surveillance service from current POP to standby POP compliance with the order of priority diminishing of standby POP.
 Low-frame-rate video surveillance system for control over long security boundaries / 2517042
Invention relates to security signalling, particularly, to video surveillance means for detection and identification of trespassers that penetrate through security borders and actuate the detection means. Proposed system consists of central control board and sets of remotely addressed video cameras connected with central control board via switchboard channel. Switchboard channel is composed by digital data transmission network via two-way serial communication interface.
 Video surveillance device / 2510960
Invention relates to video surveillance systems using means of recognising hazardous at a secure facility. The device comprises at least one video camera which is capable of converting a video signal to a digital video signal, a video signal storage unit, a unit for converting the digital video signal to a sequence of images on a video monitor screen, and further includes a manipulator of a control unit of the conversion unit which is such that movement of the manipulator corresponds to change in images on the video monitor screen, and the direction and rotational speed of the wheel corresponds to the sequence and rate of change of successive images; the device includes an event analyser which picks up events from the digital video signal which require the attention of the operator, and generates a labelling signal upon picking up an event which requires the attention of the operator; the device further includes an event display in form of a wheel, which is such that its rotation corresponds to the rotation of the manipulator of the control unit, and the event display displays images of labels of events recorded by the camera which require the attention of the operator.
 Method and system for controlling video surveillance record playback / 2508606
Playback control system comprises: a video recording means, a motion detecting means and a video playback means, wherein the video recording means is capable of recording video surveillance; the motion detecting means is capable of recognising a video image in real time and labelling a time index for a dynamic frame (dynamic frames) of the video when recording using the video recording means; and the video playback means is capable of obtaining the time index from the motion detecting means and playback the dynamic frame(s) of the video surveillance record in accordance with the time index when playing back the video surveillance record.
 Method for computer-aided recording of interferogram image signal / 2507706
Method involves forced "long" and "short" accumulation of signal charges in adjacent frames (half-frames) in the photodetector of a television camera; generating a multiplex image signal at the output of the photodetector; generating, at the "video" output of the television camera, a multiplex television signal which is transmitted to the "video" input of a personal computer; the computer demultiplexing the video signal by delaying the input multiplex television signal by a frame (half-frame) and performing weighted summation of the forward and delayed video signals through remote sampling from the computer for that delayed component of the video signal with optimum duration of "short" exposure of the CCD array in the television camera.
 Method of forming image on display of digital device / 2502212
Two signals are transmitted to an image blurring device of a digital device with a display. A first signal is transmitted from a sensor for detecting stress in eye muscles which control accommodation of the eyes of the user, located near the eyes of the user in form of glasses or a headset. A second signal is generated by a program of the digital device with a display. The image blurring device generates an output signal which controls the degree of image blurriness on the display, which is proportional to the difference between two input signals. The greater the difference between the magnitude of input signals, the greater the image blurriness on the display, and the lesser the difference, the lesser the image blurriness on the display.
 Television system for monitoring movement of hot-rolled products / 2502211
Prototype television camera includes a reducer, a shutter and a shutter control unit; the computer includes a video card; in the television camera, a first television signal sensor is based on a "row-frame transfer" CCD array. The inclusion of a first sensor of an additional pulse former for clocked supply of the photodetector enables summation of charge packets of adjacent frames.
 Method for computer detection of fringe pattern image signal and television system for realising said method / 2502210
In the CCD array of a television camera, charge packets of "long" and "short" adjacent frames (half-frames) are transferred from a photodetector section with frame (half-frame) frequency into a memory section and summed therein; the useful image signal with period 2TK which is accumulated in charge form is read from the photodetector, where TK is the period of a frame in progressive scanning mode of the video signal or half-frame in interleaved scanning mode; a useful composite video signal is formed at the output of the television camera, which is transmitted to the "video" input of the computer with period 2TK; the useful video signal with period 2TK is read from the computer memory and optimisation of recursive filtering of the recorded image signal is performed on the image displayed on the monitor screen by remote selection from the computer of the duration of "short" exposure in the television camera.
 Environment monitoring method and system / 2494567
Method includes a setup step where an operator creates a model of the environment by determining the number of cells corresponding to regions of said environment, and then creates a "cell/sensor" connection by defining for each sensor at least one possible position associated with at least one cell. For each position, the operator assigns the sensor a control estimate for the associated cell. The method also includes a working step where a control system, in order to execute a surveillance function, finds those sensors that can be used to execute the requested surveillance function and control said sensors based on control estimates and the "cell/sensor" connections.
 Adaptive tracking measuring device / 2492506
Adaptive tracking measuring device has a discriminator, two scaling units, three adders, two delay units, an extrapolator, a squarer, an averaging unit, two multiplier units, a storage unit, a divider unit and a subtractor unit, connected to each other in a certain manner.
 Methods and apparatus for initiating provisioning of subscriber data in hss of ip multimedia subsystem network / 2517399
Invention relates to a method and apparatus for provisioning subscriber data in IP multimedia subsystem network nodes. The technical result is achieved through a method which involves receiving an authentication request or session initiation protocol message with respect to a given subscriber using a user terminal to access the IP multimedia subsystem network, and if it is determined that subscriber data are not currently provisioned for the subscriber in the functional block of a subscriber data server, or if such a determination is made, the following steps are carried out: 1) causing a first notification to be sent to the user terminal indicating that a registration attempt is rejected, and 2) sending a second notification to a subscriber provisioning system informing the provisioning system of the registration attempt.
Method and system for recovery of video surveillance service / 2517330
Invention relates to video surveillance. proposed method comprises the steps of separation of data on points of presence (POP) to different types and formulation of measures for recovery of video surveillance in compliance with different failure types. Then, data of current POP failure is received to take the measures for system recovery in compliance with received data on failure type. Step of measures execution comprises switching of video surveillance service from current POP to standby POP compliance with the order of priority diminishing of standby POP.
 Method of coordinating multiple sensors / 2510147
Disclosed is a method of coordinating multiple sensors, wherein multiple networked computers control the sensors for the purpose of executing one or more services requested through the network. In order to coordinate with one another, the computers exchange information over the network in a manner such that each networked computer knows the characteristics of and the services executed by the other computers. Subsequently, the computers providing the same service execute the same configuration algorithm that defines the tasks to be carried out by each computer as a function of the characteristics of the computers providing said same service. Thus, the computers get to the same conclusions with respect to the tasks to be carried out, and control the sensors based on the tasks defined by the configuration algorithm.
 Resource pooling in electronic board cluster switching centre server / 2507703
Invention relates to a switching centre server, having: a blade cluster with a plurality of blades, a plurality of pooled resources accessible by said plurality of blades for handling a call, and a master provided on one of the blades centrally coordinating usage of the pooled resources, the master as a central instance being responsible for allocation, reallocation and maintenance of the pooled resources.
 Wireless sensor node architecture with autonomous data streaming / 2507571
Sensor device has an autonomous streaming module, having a component or a subsystem, encapsulated in an intelligent shell, which is a circuit which provides an advanced or intelligent interface between packed or enclosed component or subsystem and an external circuit; and a control unit for detecting predetermined internal events of said autonomous streaming module or predetermined external events from streaming data in said interface with said intelligent shell and for controlling the operating mode of said component or subsystem in response to the detected events.
 Method and apparatus for composing scene using laser contents / 2504907
Method and apparatus for transmitting and receiving lightweight application scene representation (LASeR) contents are provided, in which content which includes attribute information relating to at least one type of terminal, user preference and content provided during servicing and at least one of multiple scene elements and multiple scene element sets that includes the multiple scene elements is received, for use in scene composition through a terminal selecting at least one of said multiple scene elements and said multiple scene element sets; content is encoded; and the encoded content is transmitted. The content further includes event attribute information indicating change in at least one type of terminal, user preference and content provided during servicing.
 Service sharing / 2504096
User-input data indicating that a current application in a device should be shared with a second device on a network are received. Status data indicating the specific status of said current application are determined. An image selection on a display device is processed, wherein said image represents said current application in a specific status of interaction with said device. A message describing data of said image for displaying said image in the second user device on the network is sent, wherein the message describes data indicating the current application and includes the network address for said current application and said status data for obtaining access to the current application in the second user device in said specific interaction status.
 Method of providing peer-to-peer communication on web page / 2498520
Method includes steps of: 1) obtaining access to a web page from the user side, calling a Flash application interface for connecting with a server socket, connecting with a Status server to obtain a key and monitoring received messages using the Flash application; 2) sending the name and key of the sender to the server socket using the Flash application, saving the name and key of the sender on the server socket; 3) calling the Flash application interface for sending a message containing the name of a recipient to the server socket through Javascript codes on the web page of the sender; receiving the message sent by the sender and returning the key matching the name of the recipient to the Flash application on the web page of the sender using the server socket; sending the message through a network connection and the key of the recipient using the Flash application on the web page of the sender; 4) displaying the message on the web page of the recipient once the Flash application on the web page of the recipient receives the message.
 Method to realise content adaptation and server for content adaptation / 2497299
Method to realise content adaptation includes: reception of a multimedia message from a calling terminal, besides, multimedia messages carry the content of multimedia messages and a type of a called terminal; in accordance with the type of the called terminal, determination of supported multimedia formats by called terminals, and also selection of the optimal multimedia format from them; in accordance with the selected optimal multimedia format, compression of multimedia messages, then sending compressed multimedia messages according to the maximum size of multimedia messages supported by the called terminal.
 Method and system for controlling colour ring back tone service in ip multimedia subsystem / 2494563
Method includes steps where: a CRBT service server receives a self-contained CRBT service call from a user, outputs to the user with an inviting tone signal, detects a key pressing operation performed by the user according to the inviting tone signal and controls the CRBT service for the user according to the key pressing operation.
 Mechanism for sorting frames of radio communication protocol for wireless dynamic capacity data channels / 2249923
Method for delivering data frames of radio channel operation protocol of 3 type onto sublevel of said protocol is characterized by following: number of additional channels is determined, in each of them counter and/or timer is placed, frames are ordered by length, in accordance to serial number in them, and ordered frames are delivered to sublevel of software of said protocol.
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FIELD: physics, control. SUBSTANCE: invention relates to a distributed node video surveillance system and a method of controlling said system. Disclosed is distributed node video surveillance control system which includes a plurality of video surveillance system (VSS) service nodes, a service centre control platform, a preliminary unit (PU) and a client unit (CU). Each of the video surveillance system service nodes connects the preliminary unit, which is used to collect video surveillance information, to the client unit which is used to display said video surveillance information; the client unit and the preliminary unit have direct access to each of the video surveillance system service nodes for collecting data; data in the plurality of video surveillance system service nodes are synchronised with data in the service centre control platform. EFFECT: ensuring long-term stable operation of the video surveillance system with a high load, as well as processing data in real time with a high load. 12 cl, 6 dwg
The technical field The invention relates to a video surveillance system with distributed nodes and method of controlling such a system. Previous technical solutions in this field Service network video is an advanced broadband network based monitoring, transmitting, storing and managing the image of the remote object. This service provides for the transmission of images from distributed and independent points using broadband networks to form a single control system, unified storage, unified management and use of resources between regions within the full range. A network video system at the same time meets the requirements of public control and professional monitoring, is an independent network and not only can service video surveillance via mobile streaming media, but can also perform the service of video surveillance through a network of interactive television over Internet Protocol (IPTV). The existing surveillance system typically includes many subsystems, and, if the joint work of the various subsystems is not ideal, may not be supported by access through pre-block (Pre Unit, PU) with a large bandwidth, the redirection mediaman is s, client access and storage of video. Thus, there is a need to develop a new architecture of the surveillance system to solve the problem of the interaction of different subsystems. Existing service surveillance system often uses a structure with one node. As shown in the block diagram of a video surveillance system with one node in figure 1, in a video surveillance system with one node includes a system management portal (Portal Manager System, PMS) / system flow control (Streaming Management System, SMS), system control register (Register Manager, RGM), which includes the control module registration RGM and intermediate registration module RGM, and system delivery network content Delivery Network, CDN), which includes a module management content delivery CDN, the intermediate module CDN and streaming server (Streaming Server SS). System RGM and the CDN system is typically installed on the same device, but all the same data is used centralized processing mode. Shown in figure 1, the surveillance system with this centralized structure has mainly the following obvious drawbacks: 1. In module RGM too a large number of service processing, which easily becomes a bottleneck for system performance. 2. The interaction data between the at database server and the various subsystems happens too often, that easily becomes a bottleneck of the database, when a significant amount of data. 3. High bandwidth devices are not supported. If the current structure of commercial CCTV requires a large bandwidth for access to PU, delivery media, client access and records retention, services can be centralized in a system RGM module for processing, which can lead to high system loads, frequent delays in response and, thus, may cause a system failure. 4. The scalability of the system leaves much to be desired. The hardware platform of the system, database and system software does not have good scalability, the system can be extended and adjusted, and operational capabilities and performance of the system cannot be optimized and improved while ensuring the normal functioning of the services in the existing network. 5. The extensibility of the system leaves much to be desired. If the platform should be extended, the platform architecture should be adjusted, which makes the platform extension is extremely difficult. To address these five disadvantages of existing solutions try to use the scheme of distributed nodes. Scheme of distributed nodes requires each with ruiny site video surveillance services surveillance was supported by the data of this node. However, there are some conditions associated with changing data, such as: a) in the platform service center introduces new devices or change the configuration information of the device; b) directly changes the information in PU; C) the client unit (Client Unit CU) changes the data stored in the nodes; g) in the system occurs anomaly, except rolling back the transaction to the database. In the absence of synchronization mechanism to ensure the consistency of data from different service nodes CCTV system, when the above conditions occur, the information of the different nodes will be incompatible with the latest data in the database. If this situation occurs, the data may not be consistent when the system connects new devices; the control may not operate normally due to a mismatch between the information PU and database data; in each node command system contradict each other, which leads to inconsistency in the mapping of user access to various sites and information command system device. When experiencing these conditions, the existing system can only reboot the host device to re-fetch data to ensure consistency. However, frequent restart condition the device leads to interruptions, that is unacceptable for users. Therefore, the use of synchronization mechanism to ensure the consistency of data from different sites is a problem that must be solved when using patterns of distributed nodes. The invention Main objective of the present invention is to provide a video surveillance system with distributed nodes and how to operate this system in view of the shortcomings of known surveillance systems, as well as the development of a new CCTV system with the structure of distributed nodes and control method for maintaining consistency of data nodes, thus, to build a surveillance system that is suitable for widespread use. The present invention provides a video surveillance system with distributed nodes, which includes many service nodes CCTV (Video Surveillance System, VSS), the platform management service center, pre-unit (PU) and a client unit (CU), platform management service center is designed to manage multiple service nodes CCTV system; each of the service nodes CCTV system connects the pre-unit and a client unit and is designed to provide data for preliminary block and CL is the Agency of the block; preliminary unit is designed to collect information surveillance and direct access to each of the service nodes surveillance system for data collection; the client unit is designed to display information surveillance and direct access to each of the service nodes surveillance system for data collection, moreover, the data in the set of service nodes CCTV system synchronized with the data in the platform management service center. In the system according to the present invention, the service node CCTV system includes a control module registration (RGM), the management module content delivery network (CDN) and the streaming server (SS), while module control register is used for performing authentication support in working condition, pan / tilt and lens control, configuration, settings record and separation, definition and queued tasks account using the service signals, and installation of remote communication with the client unit and pre-unit on the transmission control Protocol (TCP); and the management module content delivery network is designed to control the streaming server for sending data through the management module registration. In the system according to the present and the gain control platform service center includes a system control (Monitor Manager System, MMS), content management system (Content Manager System CMS) platform distribution media (Media Distributor Platform MDP), with control system control is designed to open the account for the client unit and pre-unit and performing authorization control client unit and pre-unit, as well as perform basic operations and technical support for the platform management service center; the content management system is designed for data management and service nodes of the surveillance system; and platform distribution media is intended for module control management content delivery network. In the system according to the present invention, the control module registration includes a database memory, designed to store real-time dynamic data to the client unit and pre-unit service node CCTV system, which belongs to the module control register; the content management system is designed to store all client static data blocks and pre-blocks in the video surveillance system; module control register is also used to synchronize the static data service node CCTV system belongs to Odul control register, from the content management system when you restart. In the system according to the present invention the content management system is also designed to provide registration information about the client unit and pre-unit at their first registration; the control module registration is also designed to receive registration information returned by the content management system when the client unit and pre-unit service node CCTV system, which belongs to the module control register, registered in the content management system for the first time. In the system according to the present invention, the client unit includes one or any combination of the following: monitoring centre (Monitor Center (MOC), TV wall, a web plug-in, mobile phone and set-top box. In the system according to the present invention prior unit includes one or any combination of the following: the camera-enabled Internet Protocol (Internet Protocol Camera, IPC), digital video server Digital Video Server DVS) and digital video recorder (Digital Video Recorder, DVR). In the system according to the present invention, when data in many service nodes CCTV system synchronize with the data in the platform management service center, control system control updat is further designed to send notifications about sync data in the content management system, and the content management system is additionally designed for: receiving data that require changes from the database in accordance with the received notification data synchronization; search service site surveillance system, which must be synchronized through the hub routing; send notification of synchronization data in the module control register node Register Manager, RGM-N), which should change the data; and receiving notification of completion of data synchronization of the control module registration site after changes to the database memory. In the system according to the present invention, when data in many service nodes CCTV system synchronize with the data in the platform management service center, preliminary unit is additionally designed to change the data in the data memory of the service node CCTV system that owns this preliminary block; and the content management system is also designed to: more information about synchronizing data transmitted to the control module registration site (RGM-N); changes to the database in accordance with the synchronization information and data return confirming information about the completion of data synchronization module on the Board of the check node. The present invention additionally discloses a method of controlling a video surveillance system with distributed sites, including: the direction information of the communication request from the client unit in the module control register (RGM) service site video surveillance system (VSS), which belongs to the client unit; the initial search pre-unit (PU) in the database memory performed by the management module, and sending the response message to the client unit, if the prior block is found, or send a request message to the platform management service center, if the prior block is not found; sending information query platform management service center service node CCTV system, in which registered a preliminary block; the request message is received by the service nodes CCTV system, registered advanced unit, and forwarding the request message in the preliminary block, and then receiving the response message from the pre-unit and transmitting a response message to the management module registration; and the return received by the control module registration response message to the client unit, so to make the connection between the client unit and the pre-BC the com service nodes surveillance system. The method according to the present invention further includes: maintaining data in multiple service nodes CCTV system, synchronized with the data in the database (DB) management platform service center. According to the method of the present invention, maintaining data in multiple service nodes CCTV system, synchronized with the data in the database (DB) management platform service center includes: send notification about data synchronization system control service (MMS) platform management service center in the content management system (CMS), when the data is updated; receiving data, which require changes, the content management system from the database, finding the service node CCTV system, which must be synchronized by the nodal routing, and then sending synchronization information to the data management module registration site (RGM-N), which should change the data; and making changes to the database memory management module registration site in accordance with the received synchronization information data. According to the method of the present invention, maintaining data in multiple service nodes CCTV system, synchronized with the data in the database (DB) boards shall army management service center, includes: the notification about the change in the control module registration prior block when data changes in the data memory of the service node CCTV system that owns this pre-block; sending from the control module by registering information about synchronizing data in a content management system platform management service center; and a change in the database with content management system, in accordance with the received synchronization information data. Compared with the existing nodal structure of the surveillance system and method of controlling such a system, the video surveillance system with distributed nodes and the control method proposed by the present invention have the following advantages. 1. CU and PU have direct access to each of the nodes to receive the data, which reduces the number of database accesses and solves the problem of bottleneck access to the database. 2. Synchronization mechanisms are used to ensure consistency of data stored in multiple nodes VSS, which solves the problem of frequent lack of synchronism of data from distributed nodes, and thus, the service process may be distributed among different nodes VSS. 3. The functions of the various subsystems precombined ovani, so there is no slow reaction part and, thus, does not occur bottlenecks for the entire CCTV system due to simultaneous processing of large amounts of data. 4. The platform has a strong potential to increase throughput. When the throughput of the platform requires expansion, it is only necessary to increase the device, such as a server, and so on, without changing the architecture of the platform. Brief description of drawings 1 is a structural diagram of one node of the surveillance system according to the prior art; 2 and 3 are flow charts of distributed nodes CCTV system in accordance with the present invention; Figure 4 is a block diagram of a communication method between the client unit and pre-unit in accordance with the present invention; figure 5 is a block diagram of a method for maintaining data consistency between different distributed nodes in the passive mode; and 6 is a block diagram of a method for maintaining data consistency between different distributed nodes in active mode. Preferred embodiments of the present invention The present invention is hereinafter described in detail together with the attached drawings and options for implementation. This is th invention provides a method of ensuring consistency of data from different nodes to improve surveillance systems with distributed nodes, which performs structural optimization and reorganization, mainly based on the structure used by an existing CCTV system. The present invention provides a new structure of distributed nodes and two synchronization, and the synchronization mechanisms solve the problem of the consistency of the data generated by the distributed structure. The present invention may also eliminate many of the disadvantages of the existing video surveillance system. One of the embodiments of the present invention provides a video surveillance system 100, which uses the structure of the distributed nodes, and the method of controlling the system to maintain data consistency of these nodes. As shown in figure 2, an integral part of the surveillance system include: platform 101 management service center, many service nodes 102 of the video surveillance system (VSS), the client unit (CU) 103 and pre-unit (PU) 104. The platform 101 management of the service center manages many service node VSS, and each service node connects the corresponding CU and the corresponding PU. As shown in figure 3, in various embodiments, platform 101 management service center, related to the present invention may include a system control service (MMS), the system control pin is ntom (CMS), platform distribution media (MDP), the web site MDP (MDP-WEB), the original provider of paid content Provider, CP) and the payment server. In addition, CMS does not work in real time, instead, CMS is used only as a data controller and a node control unit VSS. When CU and PU are recorded for the first time, the registration information can be obtained through the CMS, and then send back to the service node VSS, which belong to CU and PU. MMS is designed to open the account and manage authorizations CU and PU, and performs basic operations and technical support platform 101 management of the service center. MDP is no longer used as the service control unit recording and sharing redirection and plays only the role of management CDN, instead of the control recording functions and General redirection in the CCTV system. As shown in figure 3, in various embodiments, the service node VSS, relates to the present invention, includes a control module registration (RGM), the module network content delivery (CDN), the streaming server (SS), as well as a source of paid content provider (CP). In addition, the module RGM is used as the core signaling system of the whole service, and CU and PU establish remote communication with RGM through the transmission control Protocol (TCP). Alarm only service Khujand is realized via RGM, including service alarm, such as authentication, support in working condition, pan, tilt and management lens, configuring, setting records, etc. Blocks CU and PU, respectively, related to a specific service node VSS. In the subsystem module RGM uses the database memory for storing data. The RGM module stores the real-time dynamic data of CU and PU, and the CMS stores all static data of CU and PU. When the RGM module restarts, static data is synchronized from the CMS. The CDN module is used as a control service layer SS, which now carries an external service directly, but instead provides an external service via the interface module RGM. There are mainly two interface module CDN and RGM module, i.e. one service interface and the other interface record. Division, installation and queue a task record, initially handled by the CDN module, implemented by RGM module instead of the CDN module. The CDN module is used only for data transfer and scheduling SS. In various embodiments of the invention unit CU, to which the present invention may contain one or any combination of the following: monitoring centre (MOC), TV wall, a web plug-in, mobile phone and telepr the bet. In various embodiments of the invention, the unit PU to which the present invention may contain one or any combination of the following: the camera-enabled Internet Protocol (IPC), a digital video server (DVS) and digital video recorder (DVR). In addition, the most important element of using such patterns of distributed nodes is the consistency of data from different nodes. Synchronization of data from different nodes can also be achieved through two mechanisms invention, that is, active sync and passive synchronization to coordinate them with the structure of the distributed nodes. As shown in figure 4, the communication flow between CU and PU consists of the following steps: Step S401: CU sends a request message to the subsystem module RGM. Step S402: subsystem module RGM sends a request to the CMS, if the module RGM can't find PU, in which CU has sent the request to the communication, in accordance with the data in memory. Step S403: the CMS sends the request information to the management module registration site (RGM-N) (assume that node n VSS)in which registered PU. Module RGM-N here differs from module RGM at step S402. Module RGM-N belongs to the node n VSS. while the RGM module at step S402 belongs to node 1 VSS. CMS is not working in real time, and used the Xia only as the block management data, and a node control unit VSS. RGM is the core of the signaling system of the entire service. Step S404: the Module RGM-N sends a request message module RGM-N in PU after receiving the information request CMS. Step S405: PU sends a response message to the module RGM-N after receiving a request message module RGM-N. Step S406: the Module RGM-N sends the information that is returned in the RGM module, receiving a response message from PU. Step S407: the RGM Module returns a message in CU. In the case of multiple nodes, because the allocated nodes are used for load balancing system to improve system performance, you must provide a way of co-management to solve the consistency of data across multiple nodes and the database server platform management service center. The present invention uses two mechanisms to ensure consistency of data between multiple nodes. Figure 5 shows a block diagram of a method of maintaining data consistency between different nodes in the passive mode. 6 shows a block diagram of a method of maintaining data consistency between different nodes in the active mode. a) Passive mode basically is that the notification of the synchronization data is sent to each service node VSS through the CMS, and each service node VSS receives information liability is on and modifies the database memory, stored in each node. With reference to figure 5, the method includes the following steps. Step S501: MMS sends notification of synchronization data in the CMS; Step S502: the CMS retrieves data that require changes from the database (DB) in accordance with the notification of synchronization. Step S503: CMS finds the service node VSS, which must be synchronized through the hub routing, i.e. find the module RGM-N, which should modify the data. Step S504: the CMS sends the notification data synchronization module RGM-N, which should modify the data. Step S505: the module RGM-N modifies a database memory in accordance with the received synchronization information data. Step S506: the module RGM-N sends a completion notification to the synchronization data to the CMS. b) Active mode basically is that each distributed service node VSS actively sends change notification data in the CMS to synchronize with the database (DB). With reference to Fig.6, the method includes the following steps. Step S601: PU modifies data in the data memory of the service node that owns PU. Step S602: the module RGM-N receives a change notification database memory. Step S603: the module RGM-N sends the synchronization information of the data in the CMS. Step S604: the CMS DB changes in accordance with the synchronization information of the data. Step S605:the CMS sends a confirming information about the completion of data synchronization module RGM-N. The data of each node are supported through the use of a database, memory or other storage means, such as documents and sub-database, etc. in each service site video surveillance system (VSS). The problem of data synchronization to ensure consistency in the use patterns of distributed nodes can be successfully solved using the method of joint management in both the active and passive modes, as proposed in the present invention. The present invention provides a new method and system video management with distributed nodes that can support access to PU with high bandwidth, transfer media, client access and retention of records, to ensure long-term stable operation in case of high-intensity data, to implement the processing of large amounts of data in real time and to cope with large-scale simultaneous access by users and a large number of session connections. With this invention, the hardware platform of the system, database and system software can have good scalability, and has the opportunity to expand and modify the system, and to optimize and improve operational capabilities and produces lnost system providing normal service to the existing network. When the throughput of the platform requires expansion, it is only necessary to increase the device, such as a server, and so on, without changing the architecture of the platform. It is obvious that the present invention may have many other embodiments. Specialists in this field can make various corresponding modifications and changes of the present invention, without departing from the invention, and these modifications and changes of the present invention are within the scope of the attached formula of the present invention. Industrial applicability Method and system video management with distributed nodes, as proposed in the present invention, can support access to PU with high bandwidth, transfer media, client access and retention of records, to ensure long-term stable operation in case of high-intensity data, to implement high-intensity processing data in real time and to cope with simultaneous large-scale access of users and a large number of session connections. With this invention, the hardware platform of the system, database and system software can have good scalability, and has the opportunity to expand and edit the host system, and also to optimize and improve operational capabilities and performance of the system under conditions ensuring normal operation of the services in the existing network. When the throughput of the platform requires expansion, it is only necessary to increase the device, such as a server, and so on, without changing the architecture of the platform. 1. The video surveillance system with distributed nodes containing many service nodes surveillance system (VSS), the platform management service center, pre-unit (PU) and a client unit (CU), 2. The system according to claim 1, in which the service node of the surveillance system also includes a control module a content delivery network (CDN) and the streaming server (SS), 3. The system according to claim 1, in which the platform management service center also includes a system control service (MMS) and platform distribution media (MDP), 4. System according to any one of claims 1 to 3, in which 5. The system according to claim 4, in which the client unit includes one or any combination of the following: monitoring centre (MOC), TV wall, a web plug-in, mobile phone and set-top box. 6. The system according to claim 5, in which the preliminary block includes one or any combination of the following: the camera-enabled Internet Protocol (RS), digital video server (DVS) and digital video recorder (DVR). 7. The system according to claim 6, in which, when data in many service nodes CCTV system synchronize with the data in the platform management service center, 8. The system according to claim 6, in which, when data in many service nodes CCTV system synchronize with the data in the platform management service center, 9. Method for managing video surveillance system with distributed sites, including: 10. The method according to claim 9, which further includes: 11. The method according to claim 10, in which the maintenance data in many service nodes CCTV system, synchronized with the data in the database (DB) management platform service center includes: 12. The method according to claim 10, in which the maintenance data in many service nodes CCTV system, synchronized with the data in the database (DB) management platform service center includes:
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