CN101494769B - Control device and method for providing unification locating service in video monitoring system - Google Patents
Control device and method for providing unification locating service in video monitoring system Download PDFInfo
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- CN101494769B CN101494769B CN2008100328487A CN200810032848A CN101494769B CN 101494769 B CN101494769 B CN 101494769B CN 2008100328487 A CN2008100328487 A CN 2008100328487A CN 200810032848 A CN200810032848 A CN 200810032848A CN 101494769 B CN101494769 B CN 101494769B
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Abstract
The present invention provides a method of providing a unified localized service in the video monitoring system, including a step of receiving request information accessing a monitoring platform, a step of determining all the available monitoring platform based on the request information and a step of switching the user terminal to a most appropriate monitoring platform. Also provided is a control apparatus for providing a unified localized service in the video monitoring system, which includes a receiving device, a first determination device as well as a first switching device. Preferably, the user terminal is switched to a monitoring platform with minimum load or optimized path. Also provided is a video monitoring system including the control apparatus. Through the control method and control apparatus provided by the invention, user terminals of the video monitoring system can very conveniently log on the monitoring platform and cab achieve load balancing of the monitoring platform, so as to improve the user experience of existing video monitoring system and to improve the overall operational efficiency of the system.
Description
Technical field
The present invention relates to video monitoring system, in particular to control method and control corresponding device that unified positioning service is provided for user terminal in video monitoring system.
Background technology
The operation class video monitoring business is based on broadband network provides image, sound and various alarm signal remote collection, transmission, storage, processing for the user a kind of novel value-added telecom services.Its professional emphasis is by a widely used RMON center service platform, and to be that the user provides convenient, economical, effective remote monitoring total solution with centralized subregion operation way.By the operation class video monitoring business, the user can not be subjected to time, site limitation that monitoring objective is monitored in real time, manages, watched, and realizes unified monitoring, storage and uniform, unified management and the resource-sharing of cross-region.
In video monitoring system, user terminal need carry out business operation to system, at first must carry out register, and the user signs in to one and has enough authorities or the laggard industry affair of enough multi-functional monitor supervision platform operation.But in existing video monitoring system, user terminal login the time need import the information such as IP address of the monitor supervision platform of logining (server), and owing to there are a plurality of monitor supervision platforms, the IP address difference of each monitor supervision platform, these IP address informations tend to produce the situation of memory difficulty, bring inconvenience when giving logging in system by user.More under the opposite extreme situations, in the video monitoring system of some dynamic assignment IP address, the IP address that user terminal is about to the monitor supervision platform of login may change, therefore require the user before login, to inquire about the operation of IP address, this is in the operation of the giving the user to a greater extent profit of making troubles, influenced efficient, even caused the user can't finish the business operation relevant with video.In addition, under existing operator scheme, because user terminal will sign in to the monitor supervision platform (server) of the IP address correspondence of its input, which platform monitor supervision platform actual being decided by the user should sign in on, so from realizing the load balancing to each monitor supervision platform in essence.
Therefore, be necessary to propose a kind of technical scheme to solve above-mentioned many technical problems.
Summary of the invention
At the user terminal login inconvenience that exists in the existing video monitoring system and can't realize problem to the load balancing of each monitor supervision platform, the present invention proposes a kind of control device and method that unified positioning service (Uniform Location Service) can be provided, make user terminal can finish register easily, and can realize the load balancing of each monitor supervision platform.
According to an aspect of the present invention, provide a kind of method that unified positioning service is provided in video monitoring system, wherein, comprise the steps: that a. receives the access solicited message that inserts a monitor supervision platform from the request of user terminal; B. determine the monitor supervision platform that all are available according to described access solicited message; C. described user terminal is forwarded to the only monitor supervision platform in described all available monitor supervision platforms; D. judge whether described user terminal to be forwarded to a monitor supervision platform; E. if described user terminal is not relayed to a monitor supervision platform, then transmit described access solicited message, so that can described user terminal be forwarded to a monitor supervision platform according to described access solicited message.
According to a further aspect of the invention, a kind of control device that is used to provide unified positioning service in video monitoring system is provided, it is characterized in that, comprising: receiving system is used to receive the access solicited message that inserts a monitor supervision platform from the request of user terminal; First determines device, is used for determining the monitor supervision platform that all are available according to described access solicited message; And first switching device, be used for described user terminal is forwarded to the only monitor supervision platform of described all available monitor supervision platforms; The 3rd judgment means is used to judge whether described user terminal is forwarded to a monitor supervision platform; And retransmission unit, be used for when described user terminal is not relayed to a monitor supervision platform, transmitting described access solicited message, so that can described user terminal be forwarded to a monitor supervision platform according to described access solicited message.
Preferably, the described monitor supervision platform that is requested to insert is the monitor supervision platform that is used to control the relevant watch-dog in a certain zone; Preferably, the described monitor supervision platform that is requested to insert is the monitor supervision platform that is used to control a certain watch-dog; Preferably, the described monitor supervision platform that is requested to insert is the monitor supervision platform that can realize a certain function.
According to another aspect of the present invention, provide a kind of video monitoring system, it is characterized in that, comprise aforesaid control device.
By control method provided by the invention and control device, can be so that the user terminal of video monitoring system signs in to monitor supervision platform very easily, and can realize the load balancing of monitor supervision platform, thereby improved the user experience of existing video monitoring system, improved the whole efficiency of operation of system.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 shows according to the first embodiment of the present invention, and the flow chart of the control method of unified positioning service is provided in video monitoring system;
Fig. 2 shows according to a second embodiment of the present invention, and the flow chart of the control method of unified positioning service is provided in video monitoring system;
Fig. 3 shows according to a second embodiment of the present invention, and the flow chart of the control method of unified positioning service is provided in video monitoring system;
Fig. 4 shows according to a specific embodiment of the present invention, and the network topology schematic diagram of unified positioning service is provided in video monitoring system by control device provided by the invention;
Fig. 5 shows according to a specific embodiment of the present invention, utilizes the system configuration of the server of php webpage framework;
Fig. 6 shows according to the first embodiment of the present invention, is used to provide the structural representation of the control device of unified positioning service in video monitoring system;
Fig. 7 shows according to the first embodiment of the present invention, the structural representation of first switching device 35 in the control device 3 shown in Figure 6; And
Fig. 8 shows according to a second embodiment of the present invention, a structural representation that changes example of second switching device 352 shown in Figure 7.
Embodiment
Fig. 1 shows according to the first embodiment of the present invention, and the flow chart of the control method of unified positioning service is provided in video monitoring system.In the present embodiment, at first execution in step S101 receives the access request message that inserts a monitor supervision platform from the request of user terminal.Usually, this step is finished by (for example shown in Figure 6) control device that described control method is provided, promptly send above-mentioned access request message to this control device 3, then, this request message is handled according to the described flow process of Fig. 1 by this device 3 in the present embodiment by user terminal.Next enter step S102, determine the monitor supervision platform that all are available according to described access request message, similarly, preferably this step is still finished by above-mentioned control device 3.Those skilled in the art understand, described control device 3 or other are used for the device of execution graph 1 described control method or system and can obtain (understanding) all its and can operate or the information of the monitor supervision platform of auxiliary operation, for example these information stores are a tables of data, by inquiring about this tables of data and can determining the monitor supervision platform that all are available in conjunction with the information of each concrete monitor supervision platform, for example the user asks the monitor supervision platform of " Suzhou City ", the monitor supervision platform that then only is noted as " Suzhou City " is only available monitor supervision platform, and the monitor supervision platform that is noted as " Nanjing " does not then belong to the category of available monitor supervision platform; Again for example in this tables of data those the actual user terminal that the inserts information that reached the monitor supervision platform of this monitor supervision platform institute energy access customer number threshold limit value correspondingly be noted as " unavailable " or the like.Change in the example at one, described device 3 or other devices, system by the mode of real-time inquiry obtain all its can operate or the information of the monitor supervision platform of auxiliary operation, and then determine which monitor supervision platform is available.Change in the example at another, exist a plurality of upper level monitor supervision platforms to be connected and this upper level monitor supervision platform can be transferred the data of this monitor supervision platform storage with requested monitor supervision platform, for example various video datas, a plurality of other monitor supervision platforms for example at the same level again are requested with this also that monitor supervision platform is connected and share this is requested the data of monitor supervision platform, also be various video datas or the like for example, do not repeat them here.
Then, execution in step S103 determines the most rational monitor supervision platform of resource allocation from described all available monitor supervision platforms.When having a plurality of available monitor supervision platform, in the present embodiment, then from all available monitor supervision platforms, determine the most rational monitor supervision platform of resource allocation, enter step S104 then, described user terminal is forwarded to the most rational monitor supervision platform of described resource allocation, thereby finish access procedure to user terminal, make user terminal can insert a described suitable monitor supervision platform and then begin to carry out corresponding operation, for example transfer the picture of a certain specific camera head institute real time shooting, thereby the scope that this camera head is monitored is followed the tracks of.And change in the example at one, in described step S102, only determined an available monitor supervision platform, then there is no need to carry out again described step S103, but directly carry out described step S104, at this moment, this unique available monitor supervision platform is exactly a suitable monitor supervision platform, no longer has other selections.In another more extreme variation example, can't determine any available monitor supervision platform by step S102, for example embodiment illustrated in fig. 3, then correspondingly carry out step S123 shown in Figure 3 this moment, do not repeat them here.
It will be appreciated by those skilled in the art that according to different needs the most rational monitor supervision platform of resource allocation described in the above-mentioned steps S103 can be the platform that meets various conditions.For example, preferably, it is the monitor supervision platform of load minimum, and is for example embodiment illustrated in fig. 2; Again for example, it also can be the monitor supervision platform to described user terminal path optimization, and is for example embodiment illustrated in fig. 3.
Further, those skilled in the art understand, described step S103, S104 can be understood that the specific embodiment that step " is forwarded to only monitor supervision platform in described all available monitor supervision platforms with described user terminal ", and promptly " the only monitor supervision platform " in the step is embodied as " the most rational monitor supervision platform of resource allocation " particularly like this.It will be appreciated by those skilled in the art that at other to change in the example that described " only monitor supervision platform " also can be realized by other modes, do not repeat them here.
On basis embodiment illustrated in fig. 1, Fig. 2 shows according to a second embodiment of the present invention, and the flow chart of the control method of unified positioning service is provided in video monitoring system.Present embodiment can be understood to be on Fig. 1 basis more specifically embodiment.Particularly, at first execution in step S110 receives the access request message that inserts a monitor supervision platform from the request of user terminal, and this step and step S101 shown in Figure 1 are similar, those skilled in the art can reference pin realize this step to the description of described step S101, do not repeat them here.Enter step S111 then, described user terminal is verified according to described access request message.In conjunction with embodiment illustrated in fig. 1, it will be understood by those skilled in the art that similarly this step is preferably finished by (for example shown in Figure 6) control device 3 that receives above-mentioned access request message or other similar devices, system.Particularly, those skilled in the art can be in conjunction with the proof procedure of this step of existing techniques in realizing, for example compare in conjunction with user name, password in user name, password and 3 databases that preset that can visit of this control device of user's input, if consistent then be considered as checking and pass through, do not repeat them here.And change in the example at one, described proof procedure also can be by finishing with cooperating of third party system, the device 3 that for example receives above-mentioned access request message is transmitted to a third party system with information such as the user name that comprises in the described access request message, passwords, and ask this third party system that the access request of described user terminal is verified, judge according to the feedback result of this third party system whether described proof procedure passes through then.
Does next execution in step S112 judge that whether user terminal is by checking? if by checking, then this processing procedure does not directly finish described user terminal, does not promptly need again above-mentioned access request message to be carried out any processing; Otherwise if the judged result of described step S112 is sure, promptly described user terminal then enters step S113 by checking, determines the monitor supervision platform that all are available according to described access request message.Similarly, those skilled in the art can realize described step S113 in conjunction with above-mentioned description to the S102 of step described in Fig. 1, do not repeat them here.Execution in step S114 then, calculate the load of each monitor supervision platform of described all available monitor supervision platforms, for example 5 available monitor supervision platforms have been determined by step S113 in the present embodiment, then calculate the flow of each monitor supervision platform seriatim, and with the load of this flow as the monitor supervision platform of correspondence.And change in the example at one, add up the user terminal quantity of the actual access of each monitor supervision platform institute seriatim, and with the load of this user terminal quantity as the monitor supervision platform of correspondence.Similarly, those skilled in the art can not repeat them here in conjunction with the different embodiment of the described step S114 of existing techniques in realizing.Enter step S115 then, from described all available monitor supervision platforms, determine the monitor supervision platform of a load minimum, in the present embodiment, because with the load of the actual flow of each monitor supervision platform as this monitor supervision platform, therefore, in step S115, select the monitor supervision platform of the monitor supervision platform of flow minimum as the load minimum, can guarantee that like this user terminal of this request access can be access in the monitor supervision platform of flow minimum, thereby it is bigger to make that remaining monitor supervision platform is unlikely to flow, and then realizes the purpose of load balancing.
After described step S115, execution in step S116, do you judge that the access control apparatus that places in the described user terminal needs to upgrade? if the judged result of described step S116 negates, promptly place the access control apparatus in the described user terminal not need to upgrade, then directly enter step S118; Otherwise, if the judged result of described step S116 is sure, promptly place the access control apparatus in the described user terminal to need to upgrade, then be introduced into step S117, then execution in step S118.Particularly, in step S117, upgrade described access control apparatus, this step makes described access control apparatus remain at last state, so in step S118 and subsequent step S119 all the time the access control apparatus by latest edition user terminal is accessed to the most rational monitor supervision platform of resource allocation.Particularly, in step S118, start the access control apparatus that places in the described user terminal, as mentioned above, after having carried out described step S117, the access control apparatus that then is activated is the device after upgrading.Then, execution in step S119, guide described access control apparatus to sign in to the monitor supervision platform of described load minimum, for example in step S115, determined the IP address of the monitor supervision platform of described load minimum, then described in this step access control apparatus is connected to described IP address, thereby makes the described user terminal at this access control apparatus place finally insert the monitor supervision platform of above-mentioned load minimum.
In a variation example embodiment illustrated in fig. 2, described step S111, S112 can be omitted, and promptly this user terminal are not verified, handle but directly all are inserted request messages.In such variation example, user's legitimacy is not verified, all users can insert the monitor supervision platform of being asked on the one hand, on the other hand, do not distinguish the various authorities of user to monitor supervision platform yet, for example in embodiment illustrated in fig. 2 certain customers can not insert owing to carry out described verification step need higher authority monitor supervision platform, but in this variation example, then all users can insert all monitor supervision platforms.It will be appreciated by those skilled in the art that such variation example is uncommon in actual applications, but can be implemented, will not give unnecessary details from technical standpoint.Similarly, it will be appreciated by those skilled in the art that in a variation example embodiment illustrated in fig. 1, also can increase the step that is similar to step S111, S112, promptly user's identity is verified, carried out step S102 shown in Figure 1～S104 again after checking is passed through, do not repeat them here.
Further, it will be appreciated by those skilled in the art that, step S114 shown in Figure 2, S115 are the specific embodiments of step S103 shown in Figure 1, be that the most rational monitor supervision platform of described resource allocation is the monitor supervision platform of load minimum, Fig. 3 then illustrates another embodiment of step S103, does not repeat them here.Change in the example at another, described step S114, S115 can be omitted, for example under the situation of load to its performance and/or a monitor supervision platform did not influence of user terminal access of described monitor supervision platform, can ignore the load of monitor supervision platform, in such variation example, can determine the most rational monitor supervision platform of described resource allocation, for example by embodiment illustrated in fig. 3 by other indexs.Change in the example at another, above-mentioned steps S114 is changed to " load of calculating all devices that each monitor supervision platform manages respectively ", correspondingly, described step S115 is changed to " equipment of determining a load minimum from described all devices ", described step S119 is changed to " guiding described access control apparatus to be connected to the equipment of described load minimum by corresponding monitor supervision platform ", in such variation example, in fact the various device that monitor supervision platform is managed carries out load balance process.For example, monitor supervision platform management many video recordings (NRU) equipment, these video recording equipments are in different busy states respectively, then in order to improve treatment effeciency, to respond the user in time, then user terminal can be inserted the video recording equipment of an operating load minimum, thereby realize load balancing between a plurality of video recording equipments that corresponding monitor supervision platform manages by unified positioning service provided by the invention.Those skilled in the art understand, in embodiment widely, can carry out load balancing control from different levels at different equipment according to method provided by the invention and embodiment, variation example, for example can be at above-mentioned monitor supervision platform, also the various device that can manage at monitor supervision platform will not be given unnecessary details.
Further, it will be appreciated by those skilled in the art that described step S116, S117 can be omitted, and promptly do not carry out the step of updating to described access control apparatus in a variation example embodiment illustrated in fig. 2.In such variation example, use the access control apparatus of same version all the time, perhaps realize renewal to described access control apparatus by other modes, for example manually upgrade this device, this does not influence flesh and blood of the present invention, does not repeat them here.Similarly, it will be appreciated by those skilled in the art that in a variation example embodiment illustrated in fig. 1, also can increase the step that is similar to step S116, S117, promptly described access control apparatus is upgraded, do not repeat them here.
Be similar to Fig. 2, Fig. 3 shows according to a second embodiment of the present invention, and the flow chart of the control method of unified positioning service is provided in video monitoring system.Particularly, in the present embodiment, at first execution in step S120 receives the access request message that inserts a monitor supervision platform from the request of user terminal, those skilled in the art can reference pin realize this step to the description of step S101 shown in Figure 1, do not repeat them here.Enter step S121 then, from database, inquire about the monitor supervision platform that all control the whole watch-dogs in described zone of asking according to the access request message, this step can be used as the embodiment of step S102 shown in Figure 1 and/or step S113 shown in Figure 2, promptly inquire about and obtain described all available monitor supervision platforms, and be provided with all monitor supervision platform information in the preferably described database by a tables of data in a preset database or this database.More specifically, comprise the access request of the monitor supervision platform that inserts the relevant watch-dog be used to control a certain zone in the access solicited message that receives among the step S120, correspondingly in step S121, then determined to comprise the described all monitor supervision platforms of watch-dogs of zone that are requested.For example, user's request can be controlled the monitor supervision platform of " Shanghai City " all watch-dogs, then in step S121, should determine to insert the monitor supervision platform of " Shanghai City " one-level, rather than definite monitor supervision platform that inserts Nanjing subordinate " Jing'an District ", accurately say, neither determine to insert the monitor supervision platform in " China " zone.Those skilled in the art can not repeat them here in conjunction with existing techniques in realizing step S121.
Next execution in step S122, judge whether to exist at least one monitor supervision platform? if the judged result of described step S122 negates, promptly there is not any monitor supervision platform, promptly fail to determine any available monitor supervision platform by described step S121, execution in step S123 then, transmit described access solicited message, promptly when described control device 3 is determined oneself to handle this access request message, described request forwards to other devices that can handle this message are handled, those skilled in the art can realize this step, do not repeat them here.If the judged result of described step S122 is sure, promptly there is one or more monitor supervision platform, execution in step S124 then, from described all available monitor supervision platforms, be determined to the monitor supervision platform of described user terminal path optimization, execution in step S125 then is forwarded to described user terminal the monitor supervision platform of described path optimization.Further, it will be understood by those skilled in the art that when the judged result of described step S122 whether regularly, may be that the access request message that the user imports is inappropriate, for example imported a non-existent at all region, then can't determine the available monitor supervision platform corresponding with this region; Also may be that the monitor supervision platform that the user asks all is in the busy state, not have ability to allow this access of being asked of this user again, will not give unnecessary details.
It will be appreciated by those skilled in the art that above-mentioned steps S124, S125 can be used as another embodiment of the described step S103 of Fig. 1 equally, the most rational monitor supervision platform of promptly described resource allocation is the monitor supervision platform of the described user terminal path optimization of distance.It will be appreciated by those skilled in the art that to make user terminal finally insert the shortest monitor supervision platform in path, can improve the speed that user terminal obtains monitor video, also can save Internet resources, this is rational selection.
In a variation example embodiment illustrated in fig. 3, described step S122, S123 can be omitted, be to think the such situation that can't determine any available monitor supervision platform that do not exist defaultly, for example can only select the access request message that can propose by the combobox that above-mentioned control device 3 provides when user terminal, and such access request message is corresponding with the information of those available monitor supervision platforms, then can not occur determining the situation of available monitor supervision platform this moment usually.Similarly, it will be appreciated by those skilled in the art that in Fig. 1 and/or variation example embodiment illustrated in fig. 2, also can increase the step that is similar to above-mentioned steps S122, S123, will not give unnecessary details.
Further, in variation example embodiment illustrated in fig. 3, described step S121 can be accomplished in several ways.For example change in the example at one, received access solicited message comprises the access request that inserts the monitor supervision platform be used to control a certain watch-dog among the step S120, at this moment, correspondingly, described step S121 is changed to the monitor supervision platform of determining the described watch-dog of control that is useful on; For example change in the example again at another, described access solicited message comprises that access can realize the access request of the monitor supervision platform of a certain function, correspondingly, described step S121 is changed to and determines that all can realize the monitor supervision platform of described function, for example, the user asks all video informations that record the automobile of certain car plate, and perhaps the user asks all can realize equipment of video playback or the like, does not repeat them here.
Again with reference to above-mentioned Fig. 1, Fig. 2, Fig. 3, one at the foregoing description changes in the example, can also comprise the steps: to judge whether described user terminal to be forwarded to a monitor supervision platform, if described user terminal is not relayed to a monitor supervision platform, then transmit described access solicited message, so that can described user terminal be forwarded to a monitor supervision platform according to described access solicited message.In this variation example, carry out by above-mentioned steps ground, can guarantee that a user terminal can be access in a suitable monitor supervision platform after sending the access request message; And, if handling this access request message control device 3 or other devices, when system can't finish this access operation, then described access request message is transferred.Correspondingly, it will be appreciated by those skilled in the art that the upper level control device that such switching is forwarded to former control device 3 usually finishes, and the scope of the monitor supervision platform that the upper level control device can be controlled is bigger than former control device usually.Above-mentioned step S123 shown in Figure 3 and this variation example all can illustrate in further detail in conjunction with Fig. 4.
By Fig. 1～Fig. 3, we are to realizing providing the flow process of positioning service to describe in detail according to control method provided by the invention, below, Fig. 4 shows according to a specific embodiment of the present invention, and the network topology schematic diagram of unified positioning service is provided in video monitoring system by control device provided by the invention.Particularly, exist a plurality of control device 3 for unified positioning service is provided in the described video monitoring system, in the present embodiment, each control device 3 is respectively applied for the unified positioning service of zones of different (for example region), for example monitor supervision platform 52 is the center control platform that are used for managing all devices (for example coding and decoding equipment) in " Shanghai City " zone, for example monitor supervision platform 53 is the center control platform that are used for managing all devices in " Jiangsu Province " zone again, monitor supervision platform 54 is the center control platform that are used for managing all devices in " Nanjing " zone, and monitor supervision platform 51 is the center control platform that are used for managing the interior all devices in " China " zone; Correspondingly, in the present embodiment, each monitor supervision platform all is provided with a control device accordingly, be used for providing unified positioning service, and all control device 3 are done as a wholely to provide whole unified positioning service for its applied video monitoring system at the equipment that this monitor supervision platform and/or this monitor supervision platform are managed.In the present embodiment, exist membership between the different control device 3, and depend on zones of different on the big extremely degree of such membership, the zone managed greater than monitor supervision platform 54, the zone managed of monitor supervision platform 53 for example, monitor supervision platform 53 also may be managed the monitor supervision platform of " Suzhou City " or the like.Those skilled in the art understand, by above-mentioned hierarchical structure, above-mentioned step S123 shown in Figure 3 can be implemented, the user who for example is positioned at Nanjing asks to insert the monitor supervision platform of " Suzhou City ", this access request is at first handled by the control device 3 corresponding with monitor supervision platform 54, but this control device 3 determines do not have available " Suzhou City " monitor supervision platform in its monitor supervision platform of managing after treatment, so, the access request message such according to flow process shown in Figure 3 is forwarded to the upper level control device, promptly corresponding control device 3 with monitor supervision platform 53, the control device 3 of receiving the request of forwarding then can be positioned to such request message " Suzhou City " monitor supervision platform again, does not repeat them here.Similarly, those skilled in the art understand, if a user terminal directly asks to insert " Suzhou City " monitor supervision platform by the control device of above-mentioned monitor supervision platform 51 correspondences, then preferably the control device of these monitor supervision platform 51 correspondences can be forwarded to " Suzhou City " monitor supervision platform with described access request message, does not repeat them here.
Accordingly, each control device 3 can communicate with one or more user terminals, and for example corresponding with monitor supervision platform 54 control device 3 is by communications such as network and user terminals 68,69.Further, it will be appreciated by those skilled in the art that between a plurality of control device 3 to be connected to each other, for example connect, do not repeat them here by Internet by network.
And in a variation example embodiment illustrated in fig. 4, there is not membership between the described control device 3, for example a control device is set at each province, and do not have any relation between these control device 3, for example towards the control device in " Jiangsu Province " and towards being separately independently between the control device 3 in " Hunan Province ".It will be appreciated by those skilled in the art that between each control device 3 whether need to have association, depend on the needs of enforcement, do not influence flesh and blood of the present invention, do not repeat them here.
With reference to the foregoing description, it will be appreciated by those skilled in the art that the user at first needs to sign in to a server (for example above-mentioned control device 3), is linked into monitor supervision platform by server again in order to realize unified positioning service again.Preferably, server need be verified user's identity when the user logins, and therefore, server need be connected with the specific memory that records user profile.More preferably, so unified positioning service can be kept the upper system resources balance, and therefore, server needs to obtain the resource distribution situation of each platform of upper system.Particularly, Fig. 5 shows according to a specific embodiment of the present invention, utilizes the system configuration of the server of php (PHP:HypertextPreprocessor) webpage framework.
In the present embodiment, the whole system framework is divided into client, WEB server, database three parts.Wherein, client is as the interface of user and server, submit this user's login (access) request to server, for example the user is by access control apparatus (for example common IE browser or the client utility of other customizations) and by user's filling login information in the list that presets, and click and submit to associated server, in the present embodiment, this server can be above-mentioned control device 3.Preferably, can adopt SSL (SSL, Secure Sockets Layer) agreement to set up being connected between IE browser and the WEB server, with protection user's data safety.Above-mentioned WEB server is used to receive the access request message from the user, provides the program that can download, control etc. to the user, and the user is linked into the upper strata controlling platform, preferably comprises user part message in this access request message.In the present embodiment, build the WEB server by popular Apache software.The advantage of Apache is fast, reliable, can be by simple API (application programming interface, Application Programming Interface) expansion, the Perl/Python interpreter can be compiled in the server, and be complete open source.More preferably, can adopt the php language to realize the data in server library facility, the php shell script is embedded in the webpage.Above-mentioned database is used to store various data, the information according to the invention provides unified positioning service, for example is responsible for all users' of record identity information and monitor supervision platform resource situation.For example, above-mentioned server by in database, searching the specific user identity information and compare with user profile that login user is submitted to, can judge whether the identity of described login user legal.More preferably, can realize load balancing by the IP address and the current platform loading condition that write down in this database.The realization of database can be selected according to the language that the WEB server is adopted, and for example, the WEB server adopts the PHP language, and correspondingly, database can be selected sybase or mysql etc. for use; Again for example, the WEB server adopts ASP (Active Server Page) language, and correspondingly, database can be selected SQL Server etc. for use.
Particularly, can achieve a butt joint in the following manner based on the said system framework into the processing of request process.When the user attempted logon server, server at first provided Start.php the page to the user, and this page is used to obtain user profile.In a use-case, the user can fill in the required information of login by text box, and the click confirming button sends to the Login.php page with described information, the detailed process that this page is responsible for logining, the i.e. inquiry of database.For example, can handle by in the page, adding a session (session), search record identical in the database with the user name of described login user, and relatively whether the password that provides of entry password and the described login user in the record is identical, judge with this whether described login user is legal, if legal, then forward the Succeed.php page to.By this Succeed.php page notice subscriber authentication success and the automatic access control apparatus that is positioned on the user terminal that moves.For example, can be at the php page by calling the exec function or the system function starts access control apparatus.Again for example, can utilize OCX (inline object control, Object Linking andEmbedding Control Extension) control to start access control apparatus.
In the above-mentioned Login.php page, if subscriber authentication failure, it is wrong to determine that promptly described login user is that unauthorized illegal users or its identity information are filled in, and then forwards the Failed.php page to, notice subscriber authentication failure, and allow the user to fill in identity information once more.Like the Start.php classes of pages, here can adopt the text box mode to obtain user's identity information, and when the user click determine after, to forward the Login.php page once more to, and the log-on message of checking user submission, according to the checking result, will forward the Succeed.php or the Failed.php page once more to.Preferably, entry password for fear of disabled user's violence conjecture specific user, server can write down the number of times that described specific user continues login failure, if this numerical value is greater than predetermined number of times, then be judged to be the situation of malice conjecture user password, and in the time of appointment, refuse this login request of users.Failed wrong password and run up to predetermined number of times for fear of the validated user mistake, can be at the appointed time afterwards with the zero clearing of password error counter.
It will be appreciated by those skilled in the art that in order to guarantee to place the access control apparatus in the user terminal in time to be updated, can adopt the method for the webpage embedded OCX control of operation.This method needs the version number of user's program when access control apparatus is installed to be recorded on the local terminal, for example with in version number's write operation system registry, for example version number is recorded in the configuration file (for example ini configuration file) of access control apparatus again and is kept on the client host.After will working as the server lookup database and determining that described login user identity is legal, the OCX control that is embedded in the webpage will move automatically, the version number that registration table by reading client host or configuration file obtain access control apparatus on the described client host, and with server on the top version number of the access control apparatus that provided compare to judge whether the user access control device needs to upgrade.After subscriber authentication is passed through, have three kinds of situations: 1) access control apparatus of installing on the client host has been a latest edition, need not upgrade; Perhaps 2) access control apparatus of installing on the client host needs to upgrade, and this moment, the user disagreed with renewal, had selected later renewal; Perhaps 3) access control apparatus of installing on the client host needs to upgrade.In the present embodiment, directly upgrade operation; Change in the example at one, then under the prerequisite that the user agrees to upgrade, just select to upgrade.In above-mentioned three kinds of situations which all can make web browser forward the Succeed.php page to, this page includes the address of the monitor supervision platform of the download address of access control apparatus of latest edition and the load minimum that the Login.php page is selected from database, and the access control apparatus that can call on the active client main frame makes it sign in to described monitor supervision platform.For above-mentioned the 1st, 2 kind of situation, can be directly code or OCX control startup access control apparatus by Succeed.php, and sign in to described platform; For the 3rd kind of situation, then can connect the download address of access control apparatus, begin to upgrade access control apparatus, thereby the preservation address of file in download can be by the installation site automatically decision of OCX control by reading access control apparatus in the configuration file.
Below, we describe the control device 3 that unified positioning service is provided particularly.Provide unified positioning service by this control device 3 for the user, the user terminal guiding on the monitor supervision platform of this user's appointment, has been finished the update notification of related device (for example access control apparatus) in the user terminal and the load balancing of keeping resource simultaneously.Particularly, Fig. 6 shows according to the first embodiment of the present invention, is used to provide the structural representation of the control device of unified positioning service in video monitoring system.In the present embodiment, described control device 3 comprises receiving system 31, demo plant 32, second judgment means, 33, the first definite device 34 and first switching device 35.Wherein, described receiving system 31 is used to receive the access solicited message that inserts a monitor supervision platform from the request of user terminal, it will be appreciated by those skilled in the art that this access solicited message is exactly the received information of above-mentioned receiving system 31; Described demo plant 32 is used for according to described access solicited message described user terminal being verified; Described second judgment means 33 is used to judge that whether described user terminal is by checking; Described first determines that device 34 is used for determining the monitor supervision platform that all are available according to described access solicited message; Described first switching device 35 is used for described user terminal is forwarded to the only monitor supervision platform of described all available monitor supervision platforms.
Those skilled in the art understand, can be accomplished in several ways above-mentioned first and determine device 34, for example the information of described monitor supervision platform is stored in a tables of data, by inquiring about this tables of data and can determining the monitor supervision platform that all are available in conjunction with the information of each concrete monitor supervision platform, for example the user asks the monitor supervision platform of " Suzhou City ", the monitor supervision platform that then only is noted as " Suzhou City " is only available monitor supervision platform, and the monitor supervision platform that is noted as " Nanjing " does not then belong to the category of available monitor supervision platform; Again for example in this tables of data those the actual user terminal that the inserts information that arrived the monitor supervision platform of this monitor supervision platform institute energy access customer number threshold limit value correspondingly be noted as " unavailable " or the like.Change in the example at one, described device 3 or other devices, system by the mode of real-time inquiry obtain all its can operate or the information of the monitor supervision platform of auxiliary operation, and then determine which monitor supervision platform is available.More specifically, in the present embodiment, described first determines that device 32 comprises that the 9th determines device (not shown among Fig. 6), it is used for determining monitor supervision platform that all available by when checking according to described access solicited message when described user terminal, those skilled in the art can determine device in conjunction with existing techniques in realizing the 9th, do not repeat them here.
Further, according to the difference of the received access solicited message institute content of receiving system 31, described first determines that device 34 can realize by different modes.For example change in the example at one, described access solicited message comprises the access request of the monitor supervision platform that inserts the relevant watch-dog be used to control a certain zone, determine that device 34 comprises that the 6th determines device (not shown among Fig. 6) this moment described first, it is used for determining the monitor supervision platform of the relevant watch-dog in the described zone of control that is useful on, for example user's request can be controlled the monitor supervision platform of " Shanghai City " all watch-dogs, then described first definite device 34 should determine to insert the monitor supervision platform of " Shanghai City " one-level, rather than definite monitor supervision platform that inserts Nanjing subordinate " Jing'an District ", accurately say, neither determine to insert the monitor supervision platform in " China " zone; For example change in the example again at another, described access solicited message comprises the access request that inserts the monitor supervision platform be used to control a certain watch-dog, determine that device comprises that the 7th determines device (not shown among Fig. 6) this moment described first, it is used for determining the monitor supervision platform of the described watch-dog of control that is useful on; Again for example, change in the example at another, described access solicited message comprises that access can realize the access request of the monitor supervision platform of a certain function, determines that device comprises that the 8th determines device (not shown among Fig. 6) this moment described first, and it is used for determining that all can realize the monitor supervision platform of described function.
Similarly, described demo plant 33 can be accomplished in several ways.For example, compare in conjunction with user name, password in user name, password and 3 databases that preset that can visit of this control device of user input in the present embodiment, if unanimity be considered as verifying and pass through, do not repeat them here.And change in the example at one, described proof procedure also can be by finishing with cooperating of third party system, the device 3 that for example receives above-mentioned access request message is transmitted to a third party system with information such as the user name that comprises in the described access request message, passwords, and ask this third party system that the access request of described user terminal is verified, judge according to the feedback result of this third party system whether described proof procedure passes through then.Preferably, the password that lands for fear of disabled user's violence conjecture specific user, described demo plant 33 can write down the number of times that described specific user continues to land failure, if this numerical value is greater than predetermined number of times, then be judged to be the situation of malice conjecture user password, and in the time of appointment, refuse this user's the request of landing.Those skilled in the art can will not give unnecessary details in conjunction with this device of existing techniques in realizing.
In a variation example embodiment illustrated in fig. 6, described demo plant 32, second judgment means 33 can be omitted, this user terminal is not verified this moment, promptly user's legitimacy is not verified, handle but directly all are inserted request message.
Fig. 7 shows according to the first embodiment of the present invention, the structural representation of first switching device 35 in the control device 3 shown in Figure 6.Particularly, in the present embodiment, described first switching device 35 comprises that second determines the device 351 and second switching device 352.Wherein, described second determines that device 351 is used for determining the most rational monitor supervision platform of resource allocation from described all available monitor supervision platforms, when having a plurality of available monitor supervision platform, in the present embodiment, then from all available monitor supervision platforms, determine the most rational monitor supervision platform of resource allocation; Described second switching device 352 is used for described user terminal is forwarded to the most rational monitor supervision platform of described resource allocation.And change in the example at one, if only determined an available monitor supervision platform, then described second determines that device 351 can be omitted, and at this moment, directly described user terminal is forwarded to the described unique available monitor supervision platform that is determined, and does not repeat them here.
Particularly, in the present embodiment, described second determines that device 351 comprises that also the 4th determines device 3511, it is used for the load of each monitor supervision platform of definite described all available monitor supervision platforms, and the 3rd determine device 3512, and it is used for determining from described all available monitor supervision platforms the monitor supervision platform of a load minimum.Correspondingly, described second switching device comprises the 3rd switching device 3521, and it is used for described user terminal is forwarded to the monitor supervision platform of described load minimum.Those skilled in the art understand, in the present embodiment, the most rational monitor supervision platform of described resource allocation is the monitor supervision platform of load minimum, in order to determine the monitor supervision platform of load minimum, so will determine the load separately of each available monitor supervision platform by the 4th definite device 3511.Particularly, described load can be the flow of each monitor supervision platform, and with the load of this flow as the monitor supervision platform of correspondence; And change in the example at one, described load can be the user terminal quantity of the actual access of each monitor supervision platform, does not repeat them here.
In a variation example embodiment illustrated in fig. 7, the described the 4th determines that device 3511 can be used to calculate respectively the load of all devices that each monitor supervision platform manages, correspondingly, the described the 3rd determines that device 3512 is used to determine the equipment of a load minimum from described all devices, described the 3rd switching device 3521 is used to guide described access control apparatus to be connected to the equipment of described load minimum by corresponding monitor supervision platform, in such variation example, in fact the various device that monitor supervision platform is managed (for example video recording equipment) carries out load balance process, does not repeat them here.
In another variation example embodiment illustrated in fig. 7, described second determines that device 351 can comprise that the 5th determines device (not shown among Fig. 7), and it is used for being determined to from described all available monitor supervision platforms the monitor supervision platform of described user terminal path optimization.Correspondingly, described second switching device 352 can comprise the 4th switching device (not shown among Fig. 7), and it is used for described user terminal is forwarded to the monitor supervision platform of described path optimization.In such variation example, the most rational monitor supervision platform of described resource allocation is the monitor supervision platform of the described user terminal path optimization of distance.It will be appreciated by those skilled in the art that to make user terminal finally insert the shortest monitor supervision platform in path, can improve the speed that user terminal obtains monitor video, also can save Internet resources.
Fig. 8 shows according to a second embodiment of the present invention, a structural representation that changes example of second switching device 352 shown in Figure 7.Particularly, in the present embodiment, described second switching device 352 ' comprise first starting drive (not shown among Fig. 8) and guiding device 3525.Wherein, described first starting drive is used to start the access control apparatus that places in the described user terminal; Described guiding device 3525 is used to guide described access control apparatus to sign in to the most rational monitor supervision platform of described resource allocation.Further, in the present embodiment, described first starting drive comprises first judgment means 3522, and it is used to judge whether the described access control apparatus that places in the described user terminal needs upgrading; Update device 3523, it is used for when described access control apparatus need be upgraded described access control apparatus being upgraded; And second starting drive 3524, it is used to start the access control apparatus after the described upgrading.
It will be appreciated by those skilled in the art that described first judgment means 3522 and update device 3523 make described access control apparatus remain at last state; Correspondingly, the access control apparatus that started of described second starting drive 3524 then is the device after upgrading.And change in the example at one, described first judgment means 3522 and update device 3523 can be omitted, promptly do not carry out renewal to described access control apparatus, in such variation example, all the time use the access control apparatus of same version, perhaps realize renewal, for example manually upgrade this device described access control apparatus by other modes, this does not influence flesh and blood of the present invention, does not repeat them here.
With reference to figure 6～Fig. 8, those skilled in the art understand, one at the foregoing description changes in the example, and described control device 3 can also comprise the 3rd judgment means (not shown), and it is used to judge whether described user terminal is forwarded to a monitor supervision platform; And the retransmission unit (not shown), be used for when described user terminal is not relayed to a monitor supervision platform, transmitting described access solicited message, so that can described user terminal be forwarded to a monitor supervision platform according to described access solicited message.By these two devices, can guarantee that a user terminal can be access in a suitable monitor supervision platform after sending the access request message; And, if handling this access request message control device 3 or other devices, when system can't finish this access operation, then described access request message is transferred.For example the control device 3 corresponding with monitor supervision platform 54 can be forwarded to its handled access request message the control device 3 corresponding with monitor supervision platform 53 among Fig. 4, do not repeat them here.
With reference to above-mentioned Fig. 1～Fig. 8, preferably, wherein said monitor supervision platform is the center control platform that is used to manage all watch-dogs in the specific region again.Further, described watch-dog comprise in the equipment such as coding and decoding equipment, log management device and memory device any or appoint multiplely, for example described coding and decoding equipment can comprise camera head.
With reference to figure 4, according to a specific embodiment of the present invention, also provide a kind of video monitoring system again, it comprises the described control device 3 of any embodiment among Fig. 6～Fig. 8.It will be understood by those skilled in the art that preferably in fact such video monitoring system can show as the integral body of the control device 3 of monitor supervision platform shown in Figure 4 and correspondence, the integral body of other devices except each user terminal promptly shown in Figure 4.Those skilled in the art are appreciated that this and realize in conjunction with prior art, do not repeat them here.
Mutual by the control device that is used to provide unified positioning service provided by the invention and exchange of media layer and User Access Layer equipment, can finish unified control to the Network Video Surveillance business, unified resource scheduling and management, and to the access control and the management of subscriber equipment.For the user, the implementation simple transparent of above-mentioned control device and control method, easier to be operated by the user.
More than specific embodiments of the invention are described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the appended claims.
Claims (27)
1. the method that unified positioning service is provided in video monitoring system wherein, comprises the steps:
A. receive the access solicited message that inserts a monitor supervision platform from the request of user terminal;
B. determine the monitor supervision platform that all are available according to described access solicited message;
C. described user terminal is forwarded to the only monitor supervision platform in described all available monitor supervision platforms;
D. judge whether described user terminal to be forwarded to a monitor supervision platform;
E. if described user terminal is not relayed to a monitor supervision platform, then transmit described access solicited message, so that can described user terminal be forwarded to a monitor supervision platform according to described access solicited message.
2. method according to claim 1, wherein, described step c comprises the steps:
C1. from described all available monitor supervision platforms, determine the most rational monitor supervision platform of resource allocation;
C2. described user terminal is forwarded to the most rational monitor supervision platform of described resource allocation.
3. method according to claim 2, wherein, described step c1 comprises the steps:
C11. from described all available monitor supervision platforms, determine the monitor supervision platform of a load minimum;
Wherein, described step c2 comprises the steps:
-described user terminal is forwarded to the monitor supervision platform of described load minimum.
4. method according to claim 3 wherein, comprises the steps: before the described step c11
-determine the load of each monitor supervision platform of described all available monitor supervision platforms.
5. method according to claim 2, wherein, described step c1 comprises the steps:
C11 '. from described all available monitor supervision platforms, be determined to the monitor supervision platform of described user terminal path optimization;
Wherein, described step c2 comprises the steps:
-described user terminal is forwarded to the monitor supervision platform of described path optimization.
6. according to each described method in the claim 1 to 5, wherein, described access solicited message comprises the access request of the monitor supervision platform that inserts the relevant watch-dog that is used to control a certain zone, and wherein, described step b comprises the steps:
-definite monitor supervision platform that is useful on the relevant watch-dog in the described zone of control.
7. according to each described method in the claim 1 to 5, wherein, described access solicited message comprises the access request that inserts the monitor supervision platform that is used to control a certain watch-dog, and wherein, described step b comprises the steps:
-definite monitor supervision platform that is useful on the described watch-dog of control.
8. according to each described method in the claim 1 to 5, wherein, described access solicited message comprises that access can realize the access request of the monitor supervision platform of a certain function, and wherein, described step b comprises the steps:
-determine the monitor supervision platform that all can realize described function.
9. according to each described method in the claim 2 to 5, wherein, described step c2 comprises the steps:
I. start the access control apparatus that places in the described user terminal;
Ii. guide described access control apparatus to sign in to described monitor supervision platform.
10. method according to claim 9, wherein, described step I comprises the steps:
-judge whether the described access control apparatus that places in the described user terminal needs upgrading;
The described access control apparatus of-Ruo needs upgrading, then described access control apparatus is upgraded;
Access control apparatus after the described upgrading of-startup.
11., wherein, also comprise step between described step a and the step b according to each described method in the claim 1 to 5:
-according to described access solicited message described user terminal is verified;
-judge that whether described user terminal is by checking;
The described user terminal of-Ruo is then determined the monitor supervision platform that all are available according to described access solicited message by checking.
12. a control device that is used to provide unified positioning service in video monitoring system is characterized in that, comprising:
Receiving system is used to receive the access solicited message that inserts a monitor supervision platform from the request of user terminal;
First determines device, is used for determining the monitor supervision platform that all are available according to described access solicited message; And
First switching device is used for described user terminal is forwarded to the only monitor supervision platform of described all available monitor supervision platforms;
The 3rd judgment means is used to judge whether described user terminal is forwarded to a monitor supervision platform; And
Retransmission unit is used for transmitting described access solicited message when described user terminal is not relayed to a monitor supervision platform, so that can described user terminal be forwarded to a monitor supervision platform according to described access solicited message.
13. control device according to claim 12, wherein, described first switching device comprises:
Second determines device, is used for determining the most rational monitor supervision platform of resource allocation from described all available monitor supervision platforms; And
Second switching device is used for described user terminal is forwarded to the most rational monitor supervision platform of described resource allocation.
14. control device according to claim 13, wherein, described second determines that device comprises:
The 3rd determines device, is used for determining from described all available monitor supervision platforms the monitor supervision platform of a load minimum;
Wherein, described second switching device comprises:
The 3rd switching device is used for described user terminal is forwarded to the monitor supervision platform of described load minimum.
15. control device according to claim 14, wherein, described second determines that device also comprises:
The 4th determines device, is used for the load of each monitor supervision platform of definite described all available monitor supervision platforms.
16. control device according to claim 13, wherein, described second determines that device comprises:
The 5th determines device, is used for being determined to from described all available monitor supervision platforms the monitor supervision platform of described user terminal path optimization;
Wherein, described second switching device comprises:
The 4th switching device is used for described user terminal is forwarded to the monitor supervision platform of described path optimization.
17. according to each described control device in the claim 12 to 16, wherein, described access solicited message comprises the access request of the monitor supervision platform that inserts the relevant watch-dog be used to control a certain zone, wherein, described first determines that device comprises:
The 6th determines device, is used for determining the monitor supervision platform of the relevant watch-dog in the described zone of control that is useful on.
18. according to each described control device in the claim 12 to 16, wherein, described access solicited message comprises the access request that inserts the monitor supervision platform be used to control a certain watch-dog, wherein, described first determines that device comprises:
The 7th determines device, is used for determining the monitor supervision platform of the described watch-dog of control that is useful on.
19. according to each described control device in the claim 12 to 16, wherein, described access solicited message comprises that access can realize the access request of the monitor supervision platform of a certain function, wherein, described first determines that device comprises:
The 8th determines device, is used for determining that all can realize the monitor supervision platform of described function.
20. according to each described control device in the claim 13 to 16, wherein, described second switching device comprises:
First starting drive is used to start the access control apparatus that places in the described user terminal; And
Guiding device is used to guide described access control apparatus to sign in to described monitor supervision platform.
21. control device according to claim 20, wherein, described first starting drive comprises:
First judgment means is used to judge whether the described access control apparatus that places in the described user terminal needs upgrading;
Update device is used for when described access control apparatus need be upgraded described access control apparatus being upgraded; And
Second starting drive is used to start the access control apparatus after the described upgrading.
22., wherein, also comprise according to each described control device in the claim 12 to 16:
Demo plant is used for according to described access solicited message described user terminal being verified;
Second judgment means is used to judge that whether described user terminal is by checking;
Wherein, described first determines that device comprises:
The 9th determines device, is used for determining monitor supervision platform that all available according to described access solicited message when described user terminal when verifying.
23. according to each described control device in each described method or the claim 12 to 15,21 in the claim 1 to 5,10, wherein, described monitor supervision platform is the center control platform that is used to manage all watch-dogs in the specific region.
24. method according to claim 6, wherein, described watch-dog comprise in the following equipment any or appoint multiple:
-coding and decoding equipment;
-log management device; And
-memory device.
25. method according to claim 24, wherein, described coding and decoding equipment comprises camera head.
26. a video monitoring system is characterized in that, comprises according to each described control device in the claim 12 to 16.
27. a video monitoring system is characterized in that, comprises control device according to claim 20.
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| CN101964901B (en) * | 2010-10-11 | 2012-05-30 | 杭州海康威视数字技术股份有限公司 | Right management method and equipment for video monitoring equipment |
| CN102299958B (en) * | 2011-08-16 | 2014-10-22 | 深圳市佳信捷技术股份有限公司 | Method for monitoring video through IE (Internet Explorer) client side and system |
| CN104283917A (en) | 2013-07-05 | 2015-01-14 | 中兴通讯股份有限公司 | Client side unit log-in method and system |
| CN106205075B (en) * | 2016-08-31 | 2019-06-04 | 杭州金通科技集团股份有限公司 | Video intercom alarm system |
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