CN101420458A - Multimedia content monitoring system, method and device based on content distributing network - Google Patents
Multimedia content monitoring system, method and device based on content distributing network Download PDFInfo
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- CN101420458A CN101420458A CNA2008102247075A CN200810224707A CN101420458A CN 101420458 A CN101420458 A CN 101420458A CN A2008102247075 A CNA2008102247075 A CN A2008102247075A CN 200810224707 A CN200810224707 A CN 200810224707A CN 101420458 A CN101420458 A CN 101420458A
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Abstract
The invention discloses a CDN-based multimedia content monitoring system, a method and a device thereof. The method comprises the following steps: receiving task configuration information generated according to a multimedia content monitoring task which comprises a URL of the multimedia content to be monitored; selecting a first CDN node acquired by execution content according to the acquired node information of a CDN node and the task execution state information, and instructing the first CDN node to acquire the multimedia content according to the URL of the multimedia content to be monitored; selecting a second CDN node generated by an execution fingerprint according to the acquired node information of the CDN node and the task execution state, and instructing the second CDN node to generate a fingerprint for the multimedia content acquired by the first CDN node; and processing the multimedia content to be monitored according to a result of matching between the fingerprint generated by the second CDN node and the fingerprint in a fingerprint database. The technical scheme can help improve the efficiency of monitoring the multimedia content.
Description
Technical field
The invention belongs to Internet technical field, relate in particular to multimedia content monitoring system, method and the device of content-based distributing network.
Background technology
Along with the popularizing of network broadband, quickened the Streaming Media application and development widely in recent years, content of multimedia such as audio frequency and video become one of main Internet service gradually, and increase very soon, and the multimedia market capacity increases greatly.Therefore, traditional by ICP (Internet Content Provider, the ICP) directly provide the pattern of multimedia service to be provided the pattern of multimedia service to substitute by CDN (Content Delivery Network, content distributing network) gradually.
CDN is by set up one deck overlay network on basis, existing the Internet, to stablize, efficiently internet content to be distributed to the Internet user from ICP, its concrete know-why is: by disposing some CDN nodes throughout the country, and these nodes are interconnected by the internet, form distributing network; Chosen distance ICP website recently or one or more best CDN node of connection situation is obtained content of multimedia from the ICP website, and by setting up good distributing network, is pushed on the edge C DN node near the user; The user just can obtain required content by CDN node nearby.As shown in Figure 1, CDN for single layer structure, wherein all CDN nodes are all directly from ICP station for acquiring content, send to the user then, this mode is for large-scale content of multimedia distribution, ICP website pressure is bigger, therefore, the network configuration of multilayer is adopted in large-scale content of multimedia distribution usually, as shown in Figure 2, have only the nearest CDN node of slight distance ICP website directly from ICP station for acquiring content, form ground floor distribution sublayer, the CDN node that other distance is far away then obtains content from the CDN node that ground floor is distributed the sublayer, form second layer distribution sublayer, the rest may be inferred, finally forms the distributing network of tree, sends the data to the user by the edge C DN node that is in " leaf " position at last.
When content of multimedia increases rapidly, supervision and filtration to content of multimedia seem more and more important, traditional monitoring to content of multimedia mainly is to rely on manual review to finish, promptly by artificial collection content of multimedia, and judge the whether legal or not property infringement etc. of these content of multimedia, but the mode treatment effeciency of manual review is very low, and the factors such as subjectivity during owing to artificial treatment, some piracies, illegal content of multimedia are slipped through the net, after issue, produce very big negative effect.Therefore, the manual review mode of content of multimedia is changed into the computer monitoring mode gradually, the computing capability of promptly utilizing computer to content of multimedia such as audio frequency and video filter, processing such as copyright supervision, the specific implementation process comprises the steps: as shown in Figure 3
Step 301, according to the URL to be monitored (Uniform Resource Locator, URL(uniform resource locator)) that the user is provided with, obtain content of multimedia.
Step 302, according to the fingerprint algorithm of setting, the content of multimedia that gets access to is generated fingerprint.
The content of multimedia fingerprint is meant the information of the high compression that can identify this media content, and this fingerprint content is to obtain according to the content characteristic that specific algorithm extracts original content of multimedia.
Step 303, fingerprint that will generate for content of multimedia and the fingerprint database of preserving in advance mate, if the match is successful, then execution in step 304, otherwise process ends.
The coupling of content of multimedia fingerprint mainly contains two kinds of processing modes, and a kind of is that two similarities between the fingerprint are calculated (being distance calculation), and another kind is that the mass data in the fingerprint database is searched for fast, refers generally to a kind of processing mode in back herein.
Step 304, determine that this content of multimedia does not meet distribution conditions, and carry out corresponding operating according to the processing mode of setting.
Can finish monitoring automatically by means of computer to content of multimedia, reduced the rate of slipping through the net of content of multimedia such as pirate, illegal, but in monitor procedure, computer need grasp a large amount of content of multimedia and handle to this locality from the Internet, owing to need the data volume of content of multimedia such as access internet and audio frequency and video bigger, so just need to consume bigger network bandwidth resources and storage resources; Further, because the calculating that the content of multimedia fingerprint generates need relate to the processing bigger to the amounts of calculation such as encoding and decoding of multimedia form, so just need to consume a large amount of cpu resources, the storage of content of multimedia also needs to consume bigger storage resources.In the face of CDN during to the processing demands of magnanimity content of multimedia, owing to the disposal ability that is subject to the network bandwidth, CPU, disk storage capacity etc., uniprocessor is very big to the processing pressure of content of multimedia, causes treatment effeciency very low, can't satisfy the monitoring demand of CDN to content of multimedia.
Summary of the invention
The invention provides a kind of multimedia content monitoring system, method and device thereof, in order to improve the efficient of monitoring content of multimedia among the CDN based on CDN.
The embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of multimedia content monitoring method based on CDN, comprising:
The task configuration information that reception generates according to the multimedia content monitoring task, described task configuration information comprises the uniform resource position mark URL of content of multimedia to be monitored;
According to the nodal information of each content distributing network CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the CDN node that content is obtained task, and indicates a described CDN node to obtain content of multimedia according to the URL of described content of multimedia to be monitored;
According to the nodal information of each CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the 2nd CDN node that the content of multimedia fingerprint generates task, and to indicate described the 2nd CDN node be that the content of multimedia that a described CDN node obtains generates fingerprint;
According to the fingerprint of described the 2nd CDN node generation and the matching result of the fingerprint in the fingerprint database, described content of multimedia to be monitored is handled.
The embodiment of the invention also provides a kind of central control server, comprising:
Information gathers the unit, is used to gather the nodal information of each content distributing network CDN node and the execution status of task information of described each CDN node;
The task management unit is used to receive the task configuration information that generates according to the multimedia content monitoring task, and described task configuration information comprises the uniform resource position mark URL of content of multimedia to be monitored;
Central control unit is used for gathering the information that the unit is gathered according to described information, selects to be used to carry out the CDN node that content is obtained task, and indicates a described CDN node to obtain content of multimedia according to the URL of described content of multimedia to be monitored; And, gather the information that the unit is gathered according to described information, select to be used to carry out the 2nd CDN node that the content of multimedia fingerprint generates task, and to indicate described the 2nd CDN node be that the content of multimedia that a described CDN node obtains generates fingerprint;
The matching treatment unit is used for the matching result of the fingerprint of the fingerprint that generates according to described the 2nd CDN node and fingerprint database, and described content of multimedia to be monitored is handled.
The embodiment of the invention also provides a kind of content of multimedia surveillance of content-based distributing network, comprising:
Subscriber management server is used for generating task configuration information according to the multimedia content monitoring task, and described task configuration information comprises the uniform resource position mark URL of content of multimedia to be monitored;
Central control server is used to receive the task configuration information that described subscriber management server generates; According to the nodal information of each content distributing network CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the CDN node that content is obtained task, and indicates a described CDN node to obtain content of multimedia according to the URL of described content of multimedia to be monitored; According to the nodal information of each CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the 2nd CDN node that the content of multimedia fingerprint generates task, and to indicate described the 2nd CDN node be that the content of multimedia that a described CDN node obtains generates fingerprint; According to the fingerprint of described the 2nd CDN node generation and the matching result of the fingerprint in the fingerprint database, described content of multimedia to be monitored is handled.
Pass through technique scheme, the embodiment of the invention is when receiving the task configuration information that generates according to the multimedia content monitoring task, can be according to the nodal information of the CDN node of gathering and the execution status of task information of each CDN node, selecting to be used to carry out content respectively obtains task and carries out the CDN node that fingerprint generates task, indicate the fingerprint that fingerprint database generates the CDN node selected and the fingerprint of its preservation to mate then, matching result according to fingerprint database is handled content of multimedia to be monitored, the embodiment of the invention has made full use of the server resource of each CDN node among the existing CDN, network bandwidth resources and storage resources etc. are realized the monitor task to the magnanimity content of multimedia, have improved resource utilization; And the technical scheme that provides according to the embodiment of the invention, to be distributed in a plurality of CDN nodes to the monitor task of content of multimedia, with distributed way realize the obtaining of content of multimedia, fingerprint generates and processing such as storage, has improved the monitoring efficiency to content of multimedia greatly.
Description of drawings
Fig. 1 is the CDN schematic network structure of single layer structure in the background technology of the present invention;
Fig. 2 is the CDN schematic network structure of sandwich construction in the background technology of the present invention;
Fig. 3 is a content of multimedia surveillance schematic diagram in the embodiment of the invention;
Fig. 4 is the position view of content monitoring network in CDN in the embodiment of the invention;
Fig. 5 is the structural representation of subscriber management server in the embodiment of the invention;
Fig. 6 is the structural representation one of central control server in the embodiment of the invention;
Fig. 7 is the structural representation two of central control server in the embodiment of the invention;
Fig. 8 is the structural representation one of CDN node in the embodiment of the invention;
Fig. 9 is the mutual schematic diagram of central control server shown in Figure 6 in the embodiment of the invention and CDN node shown in Figure 7;
Figure 10 is the structural representation two of CDN node in the embodiment of the invention;
Figure 11 is the mutual schematic diagram of central control server shown in Figure 6 in the embodiment of the invention and CDN node shown in Figure 9;
Figure 12 is the structural representation of fingerprint database 400 in the embodiment of the invention;
The flow chart of Figure 13 in the embodiment of the invention content of multimedia being monitored;
Figure 14 is for setting up the flow chart of fingerprint database in the embodiment of the invention.
Embodiment
In order to improve the efficient that monitors content of multimedia among the CDN, the embodiment of the invention has proposed multimedia content monitoring system, method and the device based on CDN, is explained in detail to the main realization principle of the embodiment of the invention, specific implementation process and to the beneficial effect that should be able to reach below in conjunction with Figure of description.
The multimedia content monitoring system based on CDN that the embodiment of the invention is related as shown in Figure 4, comprises following functional entity:
Participate in contents supervision's CDN node 300 (can be a plurality of, only illustrate among the figure), fingerprint database 400 among subscriber management server 100, central control server 200, the CDN.
Below the above-mentioned functions entity that comprises in this system is described in detail:
(1) subscriber management server 100:
This server is used to receive user request, obtains the URL of the content of multimedia to be monitored that comprises in user's request or the URL of content of multimedia sample, and generates corresponding task configuration information and send to central control server 200.
Particularly, the task of this task configuration information indication is warehouse-in task or fingerprint matching task, the URL of the content of multimedia sample that the warehouse-in task is promptly submitted to according to the user obtains corresponding content of multimedia sample, generates fingerprint and is saved in process in the fingerprint database 400; The URL of the content of multimedia to be monitored that the fingerprint matching task is promptly submitted to according to the user obtains corresponding content of multimedia, generate fingerprint and with fingerprint database 400 in the process of the fingerprint matching of preserving.
(2) central control server 200:
This server is used to receive the task configuration information that subscriber management server 100 sends, and carries out task scheduling according to this task configuration information, and particularly, the process of carrying out task scheduling according to task configuration information is:
According to the nodal information and the execution status of task information of the CDN node of gathering 300, the CDN node of the task of the configuration information indication that is identified for executing the task; Also be used for the task according to the task configuration information indication, carry out indication to fingerprint database 400 transmission tasks, this is designated as indication of fingerprint warehouse-in or fingerprint matching indication; Also be used for content of multimedia to be monitored being handled according to the fingerprint matching result of fingerprint database 400 feedbacks.Wherein, the nodal information of the CDN node of preserving in this server can comprise: the performance parameter of the sign of CDN node (as CDN node location, IP address etc.), the executable task of CDN node (being that content is obtained task or/and fingerprint generates task) and CDN node.
(3) the CDN node 300:
CDN node 300 is being carried out under the constant prerequisite of its existing capability in CDN, the content that is further used for receiving central control server 200 is obtained indication, obtain corresponding content of multimedia according to the URL that carries in this indication, and to central control server 200 feedback task implementation status; Or/and, the fingerprint that receives central control server 200 generates indication, according to the sign of the CDN node that carries in this indication, obtains content of multimedia from the CDN node of correspondence, for this content of multimedia generates fingerprint, and to central control server 200 feedback task implementation status.Preferably, under the situation that the CDN node resource can be used, a CDN node possesses content of multimedia simultaneously and obtains function and fingerprint systematic function, i.e. the content of multimedia that obtains of CDN node, by this CDN node from generating fingerprint as the content of multimedia that obtains.
(4) fingerprint database 400:
This server is used to receive the fingerprint warehouse-in indication that central control server 200 sends, and according to the sign of the CDN node that carries in this indication, the fingerprint and the preservation of from the CDN node of correspondence, obtaining content of multimedia; Also be used to receive the fingerprint matching indication that central control server 200 sends, sign according to the CDN node that carries in this indication, from the CDN node of correspondence, obtain the fingerprint of content of multimedia and mate, the fingerprint matching result is fed back to central control server 200 with the fingerprint of preserving.
The foregoing surveillance is when concrete the application, and subscriber management server 100 is deployed among the CDN and can provides service by the web service manner as the server that interactive interface is provided to user, O﹠M personnel in this content surveillance.Further, this server provides service in the mode of major-minor dual-host backup;
Central control server 200 is as the kernel scheduling server of this content surveillance, mode with two-node cluster hot backup is deployed among the CDN, when master server is delayed machine or system program when going wrong, the server of backup can be taken over master server immediately and carries out work, can operate as normal to guarantee whole system;
The CDN node 300 that participates in the contents supervision can be chosen several edge C DN node, being deployed in distributed mode provides external service among the CDN, participate in all moving in contents supervision's the CDN node contents supervision relative program (as content obtain, fingerprint generates supervisor), and it is separate, increasing or deletion participates in contents supervision's CDN node or any one CDN node and delays machine or system program when going wrong, do not influencing the operate as normal of other CDN node;
Fingerprint database 400 is deployed among the CDN in the mode of distributed or dual-host backup, only provides service to CDN inside.Server is delayed machine or system program when going wrong under using the dual-host backup service manner, and the server of backup can be taken over master server immediately and carry out work, can operate as normal to guarantee whole system;
As shown in Figure 5, according to the function that subscriber management server 100 is realized, this server can be divided into following functional unit:
For the content monitoring system that the embodiment of the invention is provided has better applicability, among the embodiment, also safeguard hardware device information and this multimedia content monitoring system deployment information of the CDN node that participates in the multimedia content monitoring system in the above-mentioned subscriber management server 100, particularly, this server can also comprise device management unit (not marking in the drawings), this unit is used for the hardware device information of the related CDN node of management maintenance multimedia content monitoring system, for example information such as the cpu performance of equipment, hard-disk capacity, location, IP address; The deployment information that also is used for management maintenance multimedia content monitoring system, for example, which CDN node is used to finish content and obtains task, which CDN node and be used to finish that fingerprint generates task, these CDN nodes provide service with which serve port respectively.Can carry out effective monitoring to the state of each CDN in the system by this unit, thus problem that discovery in time may occur and processing as early as possible.
Further, above-mentioned subscriber management server 100 can also provide monitoring management function to task for the user, particularly, this server can also comprise the channel manage unit, be used to the user's turn up service channel that uses the multimedia content monitoring system, so-called service channel need use the service of multimedia content monitoring system like certain copyright owner management organization, this unit just is used to this mechanism to open a service channel to carry out Service Management, for example, provide the task status inquiry for the user, task cancellation/deletion, browse content of multimedia fingerprint of having put in storage etc.; Also be used for the user that management maintenance uses the multimedia content monitoring system, for example, provide functions such as application number of the account, inquiry number of the account, deletion number of the account and modification password for the user.The main user oriented of the function of safeguarding in this unit.
As shown in Figure 6, according to the function that central control server 200 is realized, this server can be divided into following functional unit:
Information gathers unit 601, be used for obtaining the nodal information of each CDN node from subscriber management server 100, and gather the execution status of task information that each CDN node reports, this execution status of task information comprises task quantity and each task executions progress of current execution among the CDN, particularly, above-mentioned information can be gathered according to setting cycle in this unit.
Further, in order to make the more perfect function of native system, among the embodiment, above-mentioned central control server 200 also further possesses load-balancing function, promptly the task practice condition in each CDN node is monitored, when the execution of the task in CDN node pressure is excessive, request according to the CDN node carries out to other CDN node the task scheduling of carrying out in this CDN node, as shown in Figure 7, this server can also comprise: Load Balance Unit 605, this unit is used for gathering according to information the execution status of task information of each CDN node of gathering unit 601, carrying out in the CDN node of task is carried out load balancing, and for example the task of certain CDN node is carried out under the situations such as pressure is excessive needs to ask the work such as coordination of transfer task to other CDN node.
As shown in Figure 8, among the embodiment, when CDN node 300 is realized content retrieval function, comprise as lower unit:
Task coordinate unit 802, be used for downloading the loading condition scheduling downloading task of grabber according to content acquiring unit 801, promptly determine the download grabber that to carry out current downloading task, and indicate it to carry out corresponding downloading task according to each loading condition of downloading grabber; Also be used to receive the task of central control server 200 dispatching management and distribution.
Task status feedback unit 803 is used for gathering task quantity and each task executions progress of current execution in the unit 601 feedback content acquiring units 801 according to setting cycle to the information of central control server 200.
According to the above unit that central control server 200 is divided, and the unit divided when realizing content retrieval function of CDN node 300, as shown in Figure 9, be the interactive relation schematic diagram between each unit in central control server 200 and the CDN node 300.
As shown in figure 10, among the embodiment, when CDN node 300 is realized the fingerprint systematic function, comprise as lower unit:
Task coordinate unit 1002, be used for generating task according to the loading condition scheduling fingerprint of fingerprint generation unit 1001 fingerprint generator, promptly determine and to carry out the fingerprint generator that current fingerprint generates task, and indicate it to carry out corresponding fingerprint generation task according to the loading condition of each fingerprint generator; Also be used to receive the task of central control server 200 dispatching management and distribution.
Task status feedback unit 1003 is used for gathering task quantity and each task executions progress of current execution in the unit 601 feedback fingerprint generation units 1001 according to setting cycle to the information of central control server 200.
According to the above unit that central control server 200 is divided, and the unit divided when realizing the fingerprint systematic functions of CDN node 300, as shown in figure 11, be the interactive relation schematic diagram between each unit in central control server 200 and the CDN node 300.
Further,, then in CDN node shown in Figure 8, increase fingerprint generation unit 1001, perhaps, in CDN node shown in Figure 10, increase content acquiring unit 801 if the CDN node possesses content retrieval function and fingerprint systematic function simultaneously.
Fingerprint database 400 in the said system can further carry out preliminary treatment to fingerprint when preserving fingerprint, promptly fingerprint is set up index, with easy-to-look-up.As shown in figure 12, among the embodiment, according to the function that fingerprint database 400 is realized, it can comprise following functional unit:
Fingerprint search matching unit 1203, be used to receive the fingerprint matching indication of central control server 200, sign according to the CDN node that carries in this indication, from the CDN node of correspondence, obtain the finger print data of content of multimedia, mate with the finger print data of preserving in fingerprint storage unit 1201 or the fingerprint backup units 1202, and matching result is fed back to central control server 200.
Below, based on multimedia content monitoring system shown in Figure 3, the flow process of the monitoring of content of multimedia in the embodiment of the invention is specifically described, as shown in figure 13, comprise the steps:
In this step, carry the URL of the content of multimedia that will monitor or the URL of this content of multimedia place webpage in the multimedia content monitoring request that the user sends; Correspondingly, the task configuration information that generates according to this request comprises the URL that obtains corresponding content of multimedia that carries in multimedia content monitoring indication and the user's request.
After step 1302, central control server 200 receive task configuration information, according to the nodal information and the execution status of task information of a plurality of CDN nodes 300 of preserving, select a best CDN node of combination property and be used for carrying out the content of multimedia task of obtaining.
In this step, the nodal information of preserving comprises: current task implementation status in the performance parameter of each CDN node and each the CDN node, the best CDN node of combination property that selects according to this nodal information is that task is carried out CDN less and that self performance is preferable, particularly, selection is used to carry out the CDN node that obtains the content of multimedia task, comprising:
Select to set a CDN node according to the performance parameter of this CDN node, this setting CDN node is that performance is arranged a forward CDN node that specifies number by good to difference; And according to the CDN node of the execution status of task Information Selection load minimum of the CDN node of selecting;
Perhaps, set a CDN node according to the execution status of task Information Selection of CDN node, this settings CDN node be the ascending arrangement of load forward specify number an individual CDN node; And select the best CDN node of performance according to the performance parameter of the CDN node of selecting.
After the content that step 1304, CDN node 300 receive central control server 200 is obtained indication, obtain corresponding content of multimedia according to the URL that carries in this indication, and to central control server 200 feedback task implementation status.
In this step, CDN node 300 obtains content of multimedia two kinds of forms, and a kind of is initiatively to obtain, and a kind of is passive obtaining, and promptly receives the content of multimedia of the corresponding URL that the user uploads.
After step 1305, central control server 200 determine that according to the task implementation status of CDN node 300 feedbacks this CDN node 300 is finished content and obtained task, according to the nodal information and the execution status of task information of a plurality of CDN nodes 300 of preserving, select a best CDN node of combination property and be used to carry out content of multimedia fingerprint generation task.
In this step, choose and be used for carrying out basic principle that the content of multimedia fingerprint generates task and above-mentioned steps 1302 to choose the basic principle that is used to carry out the CDN node that obtains the content of multimedia task consistent, be not described in detail herein.Preferably, carry out being used to of determining in this step that the content of multimedia fingerprint generates the CDN node of task and the CDN node that obtains the content of multimedia task that is used to carry out that above-mentioned steps 1302 is determined is same node.
After step 1307, CDN node 300 receive the content of multimedia fingerprint generation indication of central control server 200, obtain corresponding content of multimedia according to the URL that carries in this indication, and be that the content of multimedia that obtains generates fingerprint, and to central control server 200 feedback task implementation status according to default fingerprint generating algorithm.
In this step, default fingerprint generating algorithm for example, can be SIFT (Scale-invariant feature transform, the conversion of yardstick invariant features), color histogram, wavelet transformation scheduling algorithm for existing fingerprint generating algorithm, does not enumerate one by one herein.
In this step, the sign of carrying the CDN node at content of multimedia finger print data place in the fingerprint matching indication.
The sign of the CDN node that step 1309, fingerprint database 400 carry in indicating according to the fingerprint matching that receives is obtained finger print data from the CDN node of correspondence, and mates with the fingerprint of preserving, and the fingerprint matching result is fed back to central control server 200.
In this step, the fingerprint that will obtain finger print data and preservation from the CDN node mates, and can comprise following process:
The finger print data of the finger print data that obtains and preservation is carried out similarity calculate,, determine this two finger print datas couplings when the similarity between two finger print datas during greater than setting threshold.
In this step, preset strategy can be provided with customizing multimedia contents supervision's user, particularly, alarm mode when finding fingerprint matching can be set, as mail or short breath mode, and concrete processing mode, during as the finger print data coupling of illegal content of multimedia sample in finger print data and the fingerprint database of the content of multimedia of monitoring, then execution forbids propagating the corresponding operating of this content of multimedia.
The fingerprint of preserving in the fingerprint database generates for the content of multimedia sample warehouse-in request that sends according to the user in advance; this content of multimedia sample can be for the content of multimedia that will carry out copyright protection, forbid propagating content of multimedia etc.; particularly; the process that fingerprint database is set up in the content of multimedia sample warehouse-in request that sends according to the user comprises the steps: as shown in figure 14
In this step, carry the URL of the content of multimedia that will put in storage or the URL of this content of multimedia place webpage in the content of multimedia sample warehouse-in request that the user sends; Correspondingly, use the task configuration information that generates according to this request to comprise the URL that obtains corresponding content of multimedia that carries in the indication of content of multimedia warehouse-in and the user's request.
After step 1402, central control server 200 receive task configuration information, according to the nodal information and the execution status of task information of a plurality of CDN nodes 300 of preserving, select a best CDN node of combination property and be used for carrying out the content of multimedia task of obtaining.
After the content that step 1404, CDN node 300 receive central control server 200 is obtained indication, obtain corresponding content of multimedia according to the URL that carries in this indication, and to central control server 200 feedback task implementation status.
After step 1405, central control server 200 determine that according to the task implementation status of CDN node 300 feedbacks this CDN node 300 is finished content and obtained task, according to the nodal information and the execution status of task information of a plurality of CDN nodes 300 of preserving, select a best CDN node of combination property and be used to carry out content of multimedia fingerprint generation task.
After step 1407, CDN node 300 receive the content of multimedia fingerprint generation indication of central control server 200, obtain corresponding content of multimedia according to the URL that carries in this indication, and be that the content of multimedia that obtains generates fingerprint, and to central control server 200 feedback task implementation status according to default fingerprint generating algorithm.
Above-mentioned steps 1402～step 1407 is consistent with the concrete know-why of above-mentioned steps 1302～1307, is not described in detail herein.
In this step, the sign of carrying the CDN node at content of multimedia finger print data place in the indication of fingerprint warehouse-in.
The sign of the CDN node that step 1409, fingerprint database 400 carry in indicating according to the fingerprint warehouse-in that receives, the finger print data and the preservation of from the CDN node of correspondence, obtaining content of multimedia.
In this step, preserve before the finger print data, can carry out preliminary treatment, for example, can set up index, with easy-to-look-up for finger print data to finger print data.
Further, in the foregoing description, 100 pairs of content of multimedia of subscriber management server are monitored and can be carried out automatically according to setting strategy, promptly do not ask initiatively to carry out based on the user.Wherein, setting strategy can be provided with as required flexibly, for example, for specific website is regularly monitored, when finding that there is new content of multimedia this website, this new content of multimedia is monitored according to said method.
Pass through technique scheme, the embodiment of the invention is when receiving the task configuration information that generates according to the multimedia content monitoring task, can be according to the nodal information and the current execution status of task information of each CDN node of the CDN node of gathering, selecting to be used to carry out content respectively obtains task and carries out the CDN node that fingerprint generates task, indicate the fingerprint that fingerprint database generates the CDN node selected and the fingerprint of its preservation to mate then, matching result according to fingerprint database is handled content of multimedia to be monitored, the embodiment of the invention has made full use of the server resource of each CDN node among the existing CDN, network bandwidth resources and storage resources etc. are realized the monitor task to the magnanimity content of multimedia, have improved resource utilization; And the technical scheme that provides according to the embodiment of the invention, to be distributed in a plurality of CDN nodes to the monitor task of content of multimedia, with distributed way realize the obtaining of content of multimedia, fingerprint generates and processing such as storage, has improved the monitoring efficiency to content of multimedia greatly.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, a kind of multimedia content monitoring method of content-based distributing network is characterized in that, comprising:
The task configuration information that reception generates according to the multimedia content monitoring task, described task configuration information comprises the uniform resource position mark URL of content of multimedia to be monitored;
According to the nodal information of each content distributing network CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the CDN node that content is obtained task, and indicates a described CDN node to obtain content of multimedia according to the URL of described content of multimedia to be monitored;
According to the nodal information of each CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the 2nd CDN node that the content of multimedia fingerprint generates task, and to indicate described the 2nd CDN node be that the content of multimedia that a described CDN node obtains generates fingerprint;
According to the fingerprint of described the 2nd CDN node generation and the matching result of the fingerprint in the fingerprint database, described content of multimedia to be monitored is handled.
2, the method for claim 1, it is characterized in that, fingerprint that if described matching result is described the 2nd CDN node to be generated and the fingerprint matching in the described fingerprint database, described according to the fingerprint of described the 2nd CDN node generation and the matching result of the fingerprint in the fingerprint database, described content of multimedia to be monitored is handled, being comprised:
According to the corresponding fingerprint pattern of fingerprint of the fingerprint matching that generates with described the 2nd CDN node in the described fingerprint database, and the implementation strategy of this fingerprint pattern correspondence, the content of multimedia of the fingerprint correspondence that described the 2nd CDN node is generated is handled.
3, the method for claim 1 is characterized in that, the fingerprint in the described fingerprint database comprises:
The fingerprint that the URL of the content of multimedia of the conduct monitoring sample that provides according to the user generates.
4, method as claimed in claim 3 is characterized in that, the URL of the content of multimedia of the conduct monitoring sample that provides according to the user generates fingerprint, comprising:
The task configuration information that reception generates according to content of multimedia warehouse-in task, described task configuration information comprise the URL as the content of multimedia of monitoring sample;
According to the nodal information of each CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the 3rd CDN node that content is obtained task, and indicates described the 3rd CDN node to obtain content of multimedia according to described URL as the content of multimedia of monitoring sample;
According to the nodal information of each CDN node of preserving and the execution status of task information of described each CDN node, selection is used to carry out the 4th CDN node that the content of multimedia fingerprint generates task, and to indicate described the 4th CDN node be that the content of multimedia that described the 3rd CDN node obtains generates fingerprint;
The indication fingerprint database obtains fingerprint and the preservation that described the 4th CDN node generates.
5, as claim 1 or 4 described methods, it is characterized in that the nodal information of described CDN node comprises the performance parameter of described CDN node;
Selection is used to carry out the CDN node of corresponding task, comprising:
Select to set a CDN node according to the performance parameter of described CDN node, and according to the CDN node of the execution status of task Information Selection load minimum of the CDN node of selecting;
Perhaps, set a CDN node, and select the best CDN node of performance according to the performance parameter of the CDN node of selecting according to the execution status of task Information Selection of described CDN node.
6, a kind of central control server is characterized in that, comprising:
Information gathers the unit, is used to gather the nodal information of each content distributing network CDN node and the execution status of task information of described each CDN node;
The task management unit is used to receive the task configuration information that generates according to the multimedia content monitoring task, and described task configuration information comprises the uniform resource position mark URL of content of multimedia to be monitored;
Central control unit is used for gathering the information that the unit is gathered according to described information, selects to be used to carry out the CDN node that content is obtained task, and indicates a described CDN node to obtain content of multimedia according to the URL of described content of multimedia to be monitored; And, gather the information that the unit is gathered according to described information, select to be used to carry out the 2nd CDN node that the content of multimedia fingerprint generates task, and to indicate described the 2nd CDN node be that the content of multimedia that a described CDN node obtains generates fingerprint;
The matching treatment unit is used for the matching result of the fingerprint of the fingerprint that generates according to described the 2nd CDN node and fingerprint database, and described content of multimedia to be monitored is handled.
7, server as claimed in claim 6, it is characterized in that, described matching treatment unit specifically is used for, when described matching result is the fingerprint that generates of described the 2nd CDN node and the fingerprint matching in the described fingerprint database, the corresponding fingerprint pattern of fingerprint according to the fingerprint matching that generates with described the 2nd CDN node in the described fingerprint database, and the implementation strategy of this fingerprint pattern correspondence, the content of multimedia of the fingerprint correspondence that described the 2nd CDN node is generated is handled.
8, server as claimed in claim 6 is characterized in that,
Described task management unit also is used for, and receives the task configuration information that generates according to content of multimedia warehouse-in task, and described task configuration information comprises the URL as the content of multimedia of monitoring sample;
Central control unit also is used for, gather the information that the unit is gathered according to described information, selection is used to carry out the 3rd CDN node that content is obtained task, and indicates described the 3rd CDN node to obtain content of multimedia according to described URL as the content of multimedia of monitoring sample; And, gather the information that the unit is gathered according to described information, select to be used to carry out the 4th CDN node that the content of multimedia fingerprint generates task, and to indicate described the 4th CDN node be that the content of multimedia that described the 3rd CDN node obtains generates fingerprint; And indicate described fingerprint database to obtain fingerprint and preservation that described the 4th CDN node generates.
9, as claim 6 or 8 described servers, it is characterized in that, described central control unit specifically is used for, and selects to set a CDN node according to the performance parameter of described CDN node, and according to the CDN node of the execution status of task Information Selection load minimum of the CDN node of selecting; Perhaps, set a CDN node, and select the best CDN node of performance according to the performance parameter of the CDN node of selecting according to the execution status of task Information Selection of described CDN node.
10, a kind of content of multimedia surveillance of content-based distributing network is characterized in that, comprising:
Subscriber management server is used for generating task configuration information according to the multimedia content monitoring task, and described task configuration information comprises the uniform resource position mark URL of content of multimedia to be monitored;
Central control server is used to receive the task configuration information that described subscriber management server generates; According to the nodal information of each content distributing network CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the CDN node that content is obtained task, and indicates a described CDN node to obtain content of multimedia according to the URL of described content of multimedia to be monitored; According to the nodal information of each CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the 2nd CDN node that the content of multimedia fingerprint generates task, and to indicate described the 2nd CDN node be that the content of multimedia that a described CDN node obtains generates fingerprint; According to the fingerprint of described the 2nd CDN node generation and the matching result of the fingerprint in the fingerprint database, described content of multimedia to be monitored is handled.
11, system as claimed in claim 10, it is characterized in that, described central control server specifically is used for, when described matching result is the fingerprint that generates of described the 2nd CDN node and the fingerprint matching in the described fingerprint database, the corresponding fingerprint pattern of fingerprint according to the fingerprint matching that generates with described the 2nd CDN node in the described fingerprint database, and the implementation strategy of this fingerprint pattern correspondence, the content of multimedia of the fingerprint correspondence that described the 2nd CDN node is generated is handled.
12, system as claimed in claim 10 is characterized in that, described subscriber management server also is used for, and is used for generating task configuration information according to content of multimedia warehouse-in task, and described task configuration information comprises the URL as the content of multimedia of monitoring sample;
Described central control server also is used for, and receives the task configuration information that described subscriber management server generates; According to the nodal information of each CDN node of gathering and the execution status of task information of described each CDN node, selection is used to carry out the 3rd CDN node that content is obtained task, and indicates described the 3rd CDN node to obtain content of multimedia according to described URL as the content of multimedia of monitoring sample; According to the nodal information of each CDN node of preserving and the execution status of task information of described each CDN node, selection is used to carry out the 4th CDN node that the content of multimedia fingerprint generates task, and to indicate described the 4th CDN node be that the content of multimedia that described the 3rd CDN node obtains generates fingerprint; And the indication fingerprint database obtains fingerprint and preservation that described the 4th CDN node generates.
13, as claim 10 or 12 described systems, it is characterized in that, described central control server specifically is used for, and selects to set a CDN node according to the performance parameter of described CDN node, and according to the CDN node of the execution status of task Information Selection load minimum of the CDN node of selecting; Perhaps, set a CDN node, and select the best CDN node of performance according to the performance parameter of the CDN node of selecting according to the execution status of task Information Selection of described CDN node.
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