CN100456830C - User terminal equipment for stream media content checking and checking method - Google Patents
User terminal equipment for stream media content checking and checking method Download PDFInfo
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- CN100456830C CN100456830C CNB2006100907122A CN200610090712A CN100456830C CN 100456830 C CN100456830 C CN 100456830C CN B2006100907122 A CNB2006100907122 A CN B2006100907122A CN 200610090712 A CN200610090712 A CN 200610090712A CN 100456830 C CN100456830 C CN 100456830C
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Abstract
The invention relates to a user terminal for inquiring the flow media content, and relative inquire method, wherein the user terminal uses the first decoding module, delay module, and the first display module to decode, rebuild and delayed display the original video flow image of flow media service; uses the second decoding module and second display module to synchronously decode and display inquire code image; user inquires said code flow image and sends out control command, when the code flow image contains harmful content; it uses user command processing module to receive and process user control command, to trigger the first display module to stop playing the video code flow image.
Description
Technical field
The present invention relates to stream media technology, particularly a kind of subscriber terminal equipment and checking method of realizing stream media content checking.
Background technology
Streaming Media (Streaming Media) has derived numerous multimedia communication service forms: video conferencing/video telephone, IPTV, VOD, instant messaging or the like as a kind of basic multimedia communication form.Therefore Streaming Media will become the basic communication form on the next generation network NGN (Next Generation Network).Especially in recent years the professional rapid rising of domestic and international IPTV (Internet Protocol Television, Internet Protocol Television), the application of Streaming Media on network are also in development rapidly.
Class business on the Streaming Media is a function so that the video/audio content to be provided all such as IPTV and VOD (Video on Demand, video request program).The scope of content is boundless, comprises movie and video programs, news, sports tournament, concert or the like.Each country, especially China pay much attention to for the safety and the monitoring of content always, and relevant law is all arranged.From protection minor angle, also there is relevant regulation various countries.Simultaneously, at operator/ISP (Internet Service Provider, ISP) and content supplier there such demand is arranged also.The domestic operation of soon carrying out IPTV on a large scale, so at first a problem is how to guarantee effective contents supervision and filtration, and harmful content is masked, and does not address this problem, IPTV operation at home will not known where to begin, and national correlation department also can not distribution of license plates may.Therefore, the solution of this problem has great significance for the development that promotes the IPTV industry.For content safety, common understanding comprises two aspects:
1,, prevents that content from not had the user of authority to receive for the protection of content;
See TV programme etc. such as preventing to steal.For this class invasion, a lot of mature technologies are arranged, such as encrypting (Encryption) and scrambling (Scrambling), authentication and digital copyright management DRM (DigitalRight Management) etc.
2, for the strick precaution of the invasion of harmful and illegal contents, protection to as if the object attacked of content, normally audient.
So-called information filtering, handle for some attribute of content exactly and judge, these contents attributes can comprise: the name of content supplier, the URL of content (Universal Resource Locator Universal Resource Locator, network address is the important URL of a class), the IP address of content providing server etc., and Media Stream is with packet header (packet header) information of the packet under the packet encapsulation situation, the information in the bag etc.As can be seen, this processing and to filter also be that level according to from the superficial to the deep carries out.
The existing network side realizes that the technology that streaming medium content filters mainly comprises following two kinds:
The first perhaps is called the shallow-layer feature and carries out information filtering according to the surface of content.Wherein most typical example is based on the filtration of URL, and there be wrong killing or wrong problem of putting in this filtering technique, and yet needs third-party rating system usually, and such rating system has, and the grading service provider of some charge provides the grading service specially.But their result can not entirely accurate and the limit network on all contents.And the content on the network also is often to change, and any one rating system also can not in time be caught up with these variations.
For requiring very high application scenarios, such as the public's that orients towards the whole country IPTV, if in case the especially political sensitive content of harmful content is invaded successfully, the harm that causes is huge.It is perfectly safe to accomplish, it all is insecure therefore adopting the filtration of shallow hierarchy.Must adopt the inferior information filtering of bottommost layer, i.e. the filtration of video/audio data itself such as the identification for image, is discerned face of harmful scene (violence, pornographic etc.) wherein, harmful Word message (captions), specific personage or the like.
Two, to reach very high filtration accuracy, must be deep into the darkest level, be i.e. content-data itself.This aspect belongs to present research focus, deep packet filtering DPF (Deep Packet Filtering).Existing depth D PF sets based on artificial depth content, in this case, content filtering equipment can be decoded and content play is come out and (be supposed that encryption is not a problem for Media Stream, because the problem of encrypting can require by the Lawful Interception of communication equipment to solve), for manual monitoring person's examination.If finding has problem, the supervisor takes immediate steps, and cuts off harmful content, switches to one section harmless content simultaneously such as public service ads etc.A quite jumbo delay apparatus must be arranged after content filtering equipment certainly, postpone harmful content, give certain judgement of monitor staff and reaction disposal time (such as 5 seconds).
This filter method lacks versatility and extensibility: obviously artificial method can't adapt to the demand of future network.Versatility is poor, poor expandability.And artificial cognition, the very subjective factor of discrimination standard and people's education, educational level and ideology etc. is relevant, can't accomplish conformance to standard; Can't be applicable to the situation of IPTV: above manual method goes for the monitoring of TV programme, but is not suitable for very much for IPTV.Because the IPTV content quantity is huge, the content source on the network is more, therefore by manually almost being competent at; And big delay is arranged, can not be applicable to the situation of both sides' real time communication: Streaming Media requires time-delay can not surpass 400ms under two-way situation, and artificial cognition can not be accomplished so low time-delay.But in the two-way communication, but be the place that is easy to exist harmful content such as Video chat.
As shown in Figure 1, present existing scheme of carrying out content safety control on terminal has only a kind of basically, is exactly head of a family's control.So-called head of a family's control derives from the control of the head of a family for minor's TV reception.Principle is as follows:
Before the content of Streaming Media sent to user terminal from stream media service system, at first the mode that instructs (EPG=Electronic Program Guide) by electronic programming sent to user terminal to the mode of the qualitative deciding grade and level attribute of the classification of program by metadata (metadata).As follows such as the qualitative deciding grade and level attribute of classification:
The violence class, the xxx level is recommended spectators' the range of age:＞=18 years old etc.;
Head of a family's controlling mechanism is exactly these attributes that utilize in the program metadata, controls the reception of minor for harmful content by setting head of a family's lock (Parental lock).Head of a family's lock is one group of filtering rule and condition in essence, such as:
Condition 1, forbid receiving the reception of the above rank program of xxx1 level yyy1; Here the harmful degree of hypothesis is high more, and rank is high more.
Condition 2, forbid receiving the reception of the above rank program of xxx2 level yyy2;
......
Condition n, forbid recommending of the reception of spectators' age less than 18 years old program;
These filterconditions, by with program in the metadata appropriate section of carrying information mate, realize filtering, the result allows or forbids receiving.By logical operation (with AND, or OR, non-NOT), these filterconditions can make up arbitrarily.Commercial stream media system in the market in specific implementation head of a family control, generally has two kinds of selections:
1, the head of a family is locked data configuration in user terminal, terminal is mated and is filtered when the metadata information that receives from stream media service system;
2, the head of a family locks data and is sent to stream media service system, is stored in the customer data base, can all leave in such database with other data of user.In stream media service system, such user management subsystem is arranged.So, in case receive service request from certain content of user terminal requests, the metadata of just taking out these filtering rules and being requested program from database is mated filtration.
People for head of a family's lock that authority setting is arranged sets by password authentication often.Equally, oneself can unrestrictedly watch program, can remove head of a family's lock, perhaps in head of a family's lock, increase the function of watching program with password if make.For the latter, if head of a family's lock is found the element certificate and the filtering rule generation accordance coupling of requested content, just require the user that password is provided, if the password of user's input is correct, then allows to watch, otherwise forbid watching.
This technical scheme has following shortcoming:
1, require program that metadata must be arranged, generally speaking, metadata is to be increased by artificial content according to program to mix.Can realize for program request class business, but be difficult to control for live class program, such as in a talk show program, welcome guest or host are improvisations, realize can't knowing whether content is harmful, therefore also can't add metadata at all;
2, the description of metadata attributes and may not be certain science.What the head of a family saw only is metadata description.Can't see that program video hears that the preview of audio frequency more directly judges;
3, metadata is easy to be attacked forgery.If it is harmless that the metadata of harmful content disguises oneself as, then head of a family's control can't be played effect;
4, fineness ratio is thicker.May be have just determined for the deciding grade and level of a program by harmful camera lens of 1% wherein.99% may be harmless even useful content, will be forced to abandon fully according to the stage division of this coarseness, can't realize that the content of fine granulation receives control.
Summary of the invention
The invention provides a kind of subscriber terminal equipment and checking method of realizing stream media content checking, to solve the problem that how on subscriber terminal equipment, to realize the depth content examination of video code flow in the prior art.
A kind of subscriber terminal equipment of realizing stream media content checking comprises:
First decoder module, Postponement module and first display module, wherein, described Postponement module is connected between first decoder module and first display module, and the original video code stream image of the described first decoder module decoding and reconstituting streaming media service and delayed module postpone to export to first display module and show;
Second decoder module and second display module, the decode examination code stream image of described original video code stream of described second decoder module, and export to second display module synchronously and show, the user sends control command when examining described examination code stream image and comprising harmful content in this examination code stream image;
The user instruction processing module receives the also control command of process user, triggers first display module according to this control command and stops to show described original video code stream image.
First communication module connects described first decoder module and second decoder module respectively, interconnects between described first decoder module and second decoder module; Described first communication module receives the original video code stream that adopts the hierarchical coding mode to compress from network side, this original video code stream comprises basic layer bit stream and one deck enhancement layer bitstream at least, first communication module is exported to first decoder module with enhancement layer bitstream wherein, basic layer bit stream is exported to second decoder module as the examination code stream, the second decoder module basic layer bit stream image of decoding, first decoder module have been finished the basic layer bit stream and the corresponding described original video code stream of the enhancement layer bitstream decoding and reconstituting image of decoding according to second decoder module.
Perhaps first communication module connects described first decoder module and second decoder module respectively; Described first communication module is examined code stream from the described original video code stream of network side parallel receive with based on the low code check that this original video code stream produces, described original video code stream is exported to first decoder module, described examination code stream is exported to second decoder module.
Show processing module, be connected between described Postponement module and described first display module; Second decoder module links to each other with second display module by described demonstration processing module; Described demonstration processing module is carried out relevant treatment to described original video code stream image.
Second communication module and user instruction input module, wherein, described second communication module is connected between described user instruction processing module and the user instruction input module, and described user instruction input module receives user's control command and is transferred to the user instruction processing module by second communication module.
Described second display module independently is provided with or merges setting with the user instruction input module.
Described subscriber terminal equipment also comprises:
Electronic programming instructs the EPG message processing module, receives and handle the metadata information of the described original video code stream that the EPG/ metadata system of network side sends by described first communication module;
The head of a family locks database, connects described second communication module, and the storage user locks data by the head of a family of described user instruction input module input;
The head of a family locks processing module, be connected between described EPG message processing module and the second communication module, and connect described first decoder module simultaneously and the described head of a family locks database, lock data according to described metadata information and the head of a family streaming medium content is mated filtration.
Described subscriber terminal equipment also comprises:
The url filtering information database connects described second communication module, and the storage user is by the url filtering information of described user instruction input module input;
The url filtering processing module is connected between url filtering information database and the first communication module, according to the harmful content source of the url filtering information filtering of user's input.
Described subscriber terminal equipment also comprises: the feedback information module, be connected between user instruction processing module and the first communication module, from the examination code stream, extract the video code flow relevant information of harmful content and relevant information is fed back to network side by the feedback command of described user instruction input module input by first communication module according to the user.
It is one of following that described feedback information module comprises at least:
First feedback unit extracts the EPG/ metadata system that the title of this original video code stream provider and/or code name, this original video code stream send the programm name and/or the numbering of the title of channel and/or numbering and this original video code stream and feed back to network side the metadata information of the original video code stream that receives from the EPG message processing module;
Second feedback unit extracts the video code flow Content Advisor system that the title of this original video code stream provider and/or code name, this original video code stream send the programm name and/or the numbering of the title of channel and/or numbering and this original video code stream and feed back to network side the metadata information of the original video code stream that receives from the EPG message processing module;
The 3rd feedback unit extracts the URL information of this original video code stream and feeds back to network side third party URL rating system from first communication module.
Described subscriber terminal equipment also comprises: main control module, connect other each module respectively, control the operation out of Memory processing module of described subscriber terminal equipment, be connected between described first communication module and the main control module, reception is from the out of Memory of network side and export to main control module, main control module is distributed to correlation module again, and this out of Memory comprises network management information or software version update information at least.
Logger module connects other each module respectively, writes down the running log of described subscriber terminal equipment and generates Log Report.
Replace content library, be connected between described demonstration processing module and the main control module, when described main control module stopped to show described original video code stream image at first display module, notice showed that processing module is extracted to replace content and export to first display module and shows from replace content library.
A kind of method that realizes the video content examination on subscriber terminal equipment comprises the steps:
The examination code stream image of subscriber terminal equipment decoding original video code stream is also exported to second display module of subscriber terminal equipment synchronously, described second display module shows this examination code stream image, and the user examines described examination code stream image and comprises in this examination code stream image and sends control command when being harmful to content;
The original video code stream image of subscriber terminal equipment decoding and reconstituting streaming medium content also postpone to show this original video code stream image at first display module, and stop to show described original video code stream image when receiving user's control command.
Wherein, described original video code stream is basic layer bit stream and one deck enhancement layer bitstream at least by the content source hierarchical coding, wherein, described basic layer bit stream is described examination code stream, and subscriber terminal equipment is according to the basic layer bit stream of finishing decoding and the corresponding described original video code stream of enhancement layer bitstream decoding and reconstituting image.
Perhaps, described examination code stream is the special-purpose examination of the low code check code stream that network equipment or content source generate based on described original video code stream, and network equipment will hang down code check special-purpose examination code stream and the corresponding parallel together subscriber terminal equipment that is transmitted to of original video code stream.
After described subscriber terminal equipment was decoded the original video code stream, described method also comprised: the head of a family that subscriber terminal equipment is imported according to metadata information and user from comprising of network side EPG/ metadata system reception of described original video code stream classification deciding grade and level quantitative attributes locks data mates filtration to streaming medium content.
Described method also comprises simultaneously: the head of a family that subscriber terminal equipment is imported the user locks data and sends to stream media service system; Stream media service system is locked data according to the described head of a family and is mated filtration with the metadata information that is requested streaming medium content when the streaming media service request of receiving the user.
Before described subscriber terminal equipment decoding original video code stream, described method comprises simultaneously: the harmful content source of url filtering information filtering that subscriber terminal equipment is imported in advance according to the user.Wherein, the filtration of described harmful content source comprises: forbid that the harmful content source in url filtering information sends the streaming medium content request; Perhaps forbid receiving the streaming medium content that the harmful content source in the url filtering information pushes.
Described method also comprises: when subscriber terminal equipment stopped to show described original video code stream image according to user's control command, obtain following relevant information: the title of the original video code stream provider that stops to show and/or code name, this original video code stream sent the title of channel and/or the programm name or the numbering of numbering and this original video code stream; And when receiving the feedback command of user's input, above-mentioned relevant information is fed back to network side EPG/ metadata system and/or network side video code flow Content Advisor system.
Described method also comprises: when subscriber terminal equipment stops to show described original video code stream image according to user's control command, obtain the URL information of the original video sign indicating number that stops to show; And when receiving the feedback command of user's input, give network side third party URL rating system with the URL feedback information of this original video sign indicating number.Can also obtain and feed back the time period information of harmful content appearance and/or harmful content-level information that the user provides simultaneously.
In this method, when subscriber terminal equipment stops to show described original video code stream image according to user's control command, keep showing described examination code stream image.When subscriber terminal equipment stops to show described original video code stream image according to user's control command, show to be kept at the replacement content of replacing in the content library in advance.
In this method, the delay of the described original video code stream image demonstration time examines the described needed time of examination code stream image according to the user and determines.
Beneficial effect of the present invention is as follows:
Technical solution of the present invention is carried out the preview examination in subscriber terminal side to the examination code stream of original video code stream, has realized this locality examination of user to the original video code stream, can increase the reliability of Content Advisor, is particularly suitable for pupillary protection;
Technical solution of the present invention can be used in combination with existing head of a family's lock control, url filtering technology, and can be used with network side Content Advisor mechanism, perfect whole streaming medium content safety examination system;
Technical solution of the present invention provides the feedback mechanism of harmful content correlated information, by user's report and feedback, constantly improves the knowledge base and the database of related streams media contents security, improves constantly the stream media content checking ability of network side;
Technical solution of the present invention can be utilized the relation of code stream sandwich construction and the basic layer and the enhancement layer of hierarchical coding mechanism, produce the examination code stream, hierarchical coding is because be highly suitable for heterogeneous network and the use down of network condition complex environment, therefore following streaming media service must be used, therefore the present invention meets technology trends and market demand, does not increase what extra requirement.
Description of drawings
Fig. 1 is for realizing the principle schematic of head of a family's control on the existing subscriber terminal equipment;
Fig. 2 is the principle schematic of first kind of video code stream checking system described in the embodiment;
Fig. 3 is the principle schematic of second kind of video code stream checking system described in the embodiment;
Fig. 4 is for realizing a kind of subscriber terminal equipment primary structure schematic diagram of technical solution of the present invention;
Fig. 5 is a kind of concrete structure schematic diagram of feedback information module among Fig. 4.
Embodiment
At first, the present invention provides first kind of method that realizes the examination of the streaming medium content degree of depth at network side at this, the basic principle of this method as shown in Figure 2, the examination center is arranged on the core network center of operator, this examination center generates node communication with the examination code stream of periphery and is connected, the examination code stream generates node and can be provided with separately, also can merge with other existing network entity to be provided with, for example: media gateway or Media Resource Server etc.The examination code stream generates node according to the original contents Media Stream, produces the examination Media Stream and sends to the examination center.Examination mainly comprises video examination code stream in the Media Stream, and it is comparatively complicated to produce video examination code stream method, can comprise following several: the video examination code stream production method of cutting apart based on scene; Generate the method for video examination code stream according to all the I frames in the video code flow; Video examination code stream based on re-quantization DCT coefficient produces way; Produce way and produce way based on the video examination code stream that reduces image resolution ratio based on the video examination code stream that reduces frame per second.The examination code stream that produces by said method keeps the main information of original contents code stream as far as possible, when manually watching, can judge the character of content at least; And bit rate is low as far as possible, the burden of the Network Transmission that reduces.
From after examining examination Media Stream that code stream generates node everywhere and being aggregate to the Content Advisor center, manual identified or identification automatically can be carried out to the examination code stream in the examination center, if harmful, then to take measures, order have problem content the examination code stream of process generate node and carry out following processing:
1, cuts off harmful content code stream;
2, replace with harmless standby replacement content code stream, the user still can see content like this, and most common form is a commercial breaks etc.;
Certainly, if the network of operator is very big, the examination center also can the classification setting, and a network part is responsible at an examination center.Still consult shown in Figure 3ly, have 1 grade of examination center the highest, in addition, in the heart examination expert's authority is the highest in the highest examination, for the content that has query, if 2 grades of following examination centers can't judge, can give the highest examination center and utilize manual identified to judge.
The present invention also provides second kind based on the hierarchical coding technology, at video code stream checking method, system and the relevant device of network side realization.Produce the examination code stream by basic layer, examine for the examination code stream by examination equipment, examine when no problem, examination equipment is transmitted this basic layer bit stream to receiving user's receiving terminal again, and enhancement layer bitstream directly sends to user's receiving terminal then without examination equipment, user terminal receives after all basic layers add enhancement layer, can carry out the total video code flow of decoding and reconstituting and watch program, user terminal can not receive basic layer, just can't watch program by decoding and reconstituting.
The auditing system structural representation of realizing this technical scheme mainly comprises relevant device, content data base, streaming media server, Content Advisor equipment and user's receiving device of content source as shown in Figure 2, wherein:
Solid line partly is the examination realization flow of live-mode, under the live-mode, the elementary stream that content source directly will be examined usefulness directly sends to by streaming media server and sends to Content Advisor equipment, residue strengthens the code stream delayed delivery and gives user's receiving terminal, do not comprise when being harmful to content in the examination equipment examination elementary stream, again elementary stream is transmitted to user's receiving terminal, if comprise harmful content in the elementary stream, then elementary stream is not transmitted to user's receiving terminal, like this, when user's receiving terminal can not receive elementary stream, can't decoding and reconstituting original video code stream.In this process, examination equipment can be as required video quality, the coding quality of the corresponding raising in content of announcement source/basic layer bit stream of reduction, perhaps when transmitting this basic layer bit stream, the enhancement layer bitstream that is used to strengthen examination effect and accuracy is transmitted in increase/minimizing.If the latter comprises also in the code stream that is applied to mutually examine that a part strengthens code stream.
Dotted portion is the examination realization flow of store content play mode, and under the store content play mode, basic layer bit stream that content source will produce earlier and enhancement layer bitstream store corresponding basic layer bit stream track and enhancement layer track respectively into; When streaming media server is play this video content again, from basic layer bit stream track, read basic layer bit stream and be transmitted to examination equipment, read enhancement layer bitstream and postpone to handle after send to user terminal; Equally, in this process, examination equipment video quality as required, the notification streams media server is when transmitting this basic layer bit stream, the enhancement layer bitstream that is used to strengthen examination effect and accuracy is transmitted in increase/minimizing, comprises also in the code stream that is applied to mutually examine that a part strengthens code stream.
This technical scheme mainly realizes based on following three kinds of main flow hierarchical coding technology: based on time layered video coding method; Based on SNR layered video coding method; Based on the space delamination method for video coding.
Above-mentioned two kinds of technical schemes have provided the technical scheme of carrying out the depth content examination at network side utilization examination code stream, the application is based on above-mentioned two kinds of technical schemes, propose a kind of technical scheme that realizes the depth content examination on subscriber terminal equipment, technical conceive mainly comprises:
The decode examination code stream image of described original video code stream and show synchronously this examination code stream image of subscriber terminal equipment, the user examines described examination code stream image and comprises in this examination code stream image and sends control command when being harmful to content;
The original video code stream image of subscriber terminal equipment decoding and reconstituting streaming medium content also postpones to show this original video code stream image, and stop to show described original video code stream image when receiving user's control command.
Depend on that preview examines the needed time time of delay of original video code stream image, can be set at for 5 seconds usually.
Based on aforementioned first kind of technical scheme, the examination code stream is the low code check examination of the special use code stream that generates based on the original video code stream, should hang down code check examination code stream and original video code stream by the parallel together subscriber terminal equipment that is transmitted to of network side, should low code check examination code stream and the original video code stream may be simultaneously or approximately arrive subscriber terminal equipment simultaneously, depend primarily on the time-delay that network side Content Advisor system (promptly examining the center) introduces with respect to the examination code stream the original video code stream.
Based on aforementioned second kind of technical scheme, the original video code stream is basic layer bit stream and one deck enhancement layer bitstream at least by the content source hierarchical coding, and the basic layer bit stream that subscriber terminal equipment will be wherein is as described examination code stream; And according to the basic layer bit stream of finishing decoding and the corresponding described original video code stream of enhancement layer bitstream decoding and reconstituting image.If network side examination equipment is not examined basic layer bit stream, then basic layer bit stream and enhancement layer bitstream reach subscriber terminal equipment simultaneously; Otherwise if network side examination equipment is examined the examination code stream in advance, then basic layer bit stream and enhancement layer bitstream arrive subscriber terminal equipment in succession.
In above-mentioned two kinds of scenes, the user can examine the examination that the code stream image is realized harmful content by preview, and in time cuts off the broadcast of the original video code stream image that comprises harmful content, realizes the control of harmful content.
This technical scheme can also be used simultaneously with existing head of a family's lock control scheme, be specially: the user locks data the subscriber terminal equipment storage head of a family in advance, network side EPG/ metadata system is when the user asks streaming medium content, and the metadata information that will comprise described original video code stream classification deciding grade and level quantitative attributes earlier sends to subscriber terminal equipment; Subscriber terminal equipment is locked data according to the head of a family of described metadata information and user input streaming medium content is mated filtration; The head of a family that subscriber terminal equipment can also be imported the user simultaneously locks data and sends to stream media service system, stream media service system is when the streaming media service request of receiving the user, and the metadata of locking data and requested content according to the described head of a family is mated filtration.
This technical scheme can also be used simultaneously with existing url filtering scheme, be specially: the url filtering information filtering of importing in advance according to the user is harmful to content source, wherein, url filtering comprises the control of two aspects: forbid that the harmful content source in url filtering information sends content requests; Perhaps forbid receiving the streaming medium content that the harmful content source in the url filtering information pushes.
Like this, the time period in staying out for the head of a family, the head of a family can adopt following measure to guarantee that the minor children avoids being subjected to the infringement of harmful content:
(1) traditional head of a family locks setting, blocks certain class channel or program.
(2) the customized third-party url filtering service of the head of a family;
(3) the Content Advisor service of customized network side realizes that the content of fine granulation receives control.
If network side is limited to technical reason or economic cause, can't provide under the situation of Content Advisor service, two kinds of different situations are arranged:
(1) content source (such as the streaming media server of content supplier) provides the examination code stream, but network side does not have auditing system to examine for the examination code stream.Then can only rely on user terminal to accept the examination code stream, examine by the mode of preview.
(2) if content source can not provide the examination code stream, and network side does not have auditing system to examine for the examination code stream.Can only depend on head of a family's control or third party's url filtering so.
For url filtering, at first the content safety system of network side stream media service system can utilize the URL classification grading information that the third party provides to control for the content media stream that mails to user terminal from network side.User terminal obtains the URL grading of preparation request content from third party URL service system, mates the third party URL information of grading with user's oneself filtercondition, receives control then.
After examining out harmful content, this technical scheme can also comprise the feedback of the following aspects further to the relevant information of the harmful content of network side related system feedback:
1, feed back following information to network side EPG/ metadata system: the title of described original video code stream provider and/or code name, described original video code stream send the programm name or the numbering of the title of channel and/or numbering, described original video code stream;
2, to the following information of network side video code flow Content Advisor system feedback: the title of described original video code stream provider and/or code name, described original video code stream send the programm name or the numbering of the title of channel and/or numbering, described original video code stream;
3, feed back the URL information of described original video sign indicating number to third party URL rating system.
Can also feed back the time period information of harmful content appearance and/or harmful content-level information that the user provides simultaneously.This feedback mechanism can provide good reference data for network side, to improve various filtrations, the review mechanism of network.For example: network side EPG/ metadata system can in time be revised metadata information according to real feedback information; The Content Advisor system can realize meticulousr Content Advisor according to real feedback information; Third party URL rating system also can be according to real feedback information correction ratings data wherein etc.
If use feedback mechanism, the collection of feedback information mainly contain two channels:
After the metadata information that the EPG/ metadata system sends arrives subscriber terminal equipment, partial information wherein all is kept in the correspondence memory of terminal equipment, terminal equipment receives after the user stops to show the control command of original video code stream image, from correspondence memory, extract these information automatically in order to feedback, need the relevant information of feedback to generally comprise:
(1) original video content code stream provider title and code name;
(2) send original video code stream channel designation and numbering;
(3) programm name of original video code stream and numbering;
In addition, part needs feedack to be imported by the user, for example:
(1) harmful classifying content;
Violence, pornographic, reaction etc.Select feedback by the user by remote controller.
(2) harmful degree rank;
The 0-N level.0 grade the highest, the most serious, and the N level is minimum, least serious, selects feedback by the user by remote controller, and default rank is 0.
Certainly the information that needs the user to import all is optionally, if the user does not import above-mentioned information, has one group of default value for using.
Feedback is harmful to the temporal information of content if desired, and following two kinds of recording methods can be arranged:
(1) terminal equipment receive the user stop to show control command the time, the automatic extracting system time is carried out record.This time is that the time system with terminal is the relativity shift time with respect to program start time of benchmark.This temporal information feeds back to network side, and network side need carry out necessary correction (considering because network transmits the factor such as asynchronous of time heterogeneity that the Media Stream that causes plays and network side time and terminal time on terminal).
(2) terminal equipment prompting user segment information input time.
The user can feed back after having watched whole programs again, therefore might write down a plurality of time period information, for example:
Record 0: zero-time: hh:mm:ss (first period initial moment of harmful content);
Concluding time: hh:mm:ss (first section harmful end of text constantly);
Record 1: zero-time: hh:mm:ss (second period initial moment of harmful content);
Concluding time: hh:mm:ss (second section harmful end of text constantly);
......
Record N-1: zero-time: hh:mm:ss (the N section is harmful to the initial moment of content);
Concluding time: hh:mm:ss (the harmful end of text of N section constantly);
The above moment is the relative time side-play amount, and with respect to program start time, the program start time moment corresponding is 00:00:00.
When the user need feed back, can import feedback command to subscriber terminal equipment by specific keys, after subscriber terminal equipment is received feedback command, automatically aforementioned information is combined, produce feedback message and send to network side.
Further control can realize, feeds back corresponding information to the different related systems of network side, for example network side Content Advisor system (for example examining the center), EPG/ metadata system or third party URL rating system etc.
After feedack is received by network side Content Advisor system (for example examining the center), may take following measure to handle:
(1) the process inspection personnel examines and records database;
(2) for recording content-data in the database, when this content broadcast next time, can control through examining.A kind of strategy is for harmful content, suspend to play, and just continues to play subsequent media during to harmful end of text and flows.Beginning by utilizing each harmful segment and the finish time information can accurately control etc.
Like this, subscriber terminal equipment and the service of network side Content Advisor receive control in conjunction with the content of content safety strategy that the combination of plurality of kinds of contents safety method is provided and realization fine granulation.
With respect to prior art, the present invention can provide the content based on the fine granulation of user terminal to receive control.Not only can control whether receive certain channel, certain film in the channel can also be deep in the film, realizes the reception control of different segments.
If the network side stream media service system provides the Content Advisor function, two kinds of situations are arranged:
(1) compulsory: as all will to examine from the content media stream that network side is sent to user terminal for all.
(2) optional: the user obtains the service of network side Content Advisor by the mode of subscribed services.This service may be paid.In customization after such service, some will be examined from the content media stream that network side sends to user terminal.The user can control the scope for Content Advisor by filtercondition is set.Such as for examining from all channels of certain tame IPTV Web TV company, perhaps specific several channels are examined.With regard to channel, can examine for the program that (midnight 00:00AM-7:00PM or the like) in certain time period of a channel plays etc.The user can also select whether will receive the examination code stream is carried out preview on the user terminal of oneself.If the selection preview equals user oneself and also examines, add that the network examination is a double insurance.Can also pass through the leak of feedback mechanism reporting ent examination etc.
In this technical scheme, when the user stopped to show described original video code stream image, terminal equipment can keep showing described examination code stream image, and the user can continue to show original video code stream image by indicating terminal equipment again behind harmful end of text.
This shows, by combining, by utilizing existing content safety technology based on user terminal with network side content safety mechanism, it is a kind of comprehensive that the present invention can provide, at many levels, suitable various application scenarioss, and the content safety controlling schemes of support fine granulation.
For realizing technique scheme, the invention provides a kind of subscriber terminal equipment 100, primary structure comprises as shown in Figure 4:
1, first decoder module 1011, Postponement module 1012 and first display module 1013, wherein, Postponement module 1012 is connected between first decoder module 1011 and first display module 1013, the original video code stream image of first decoder module, 1011 decoding and reconstituting streaming media service and delayed module 1012 postpone to export to first display module, 1013, the first display modules 1013 and show this original video code stream image;
Wherein, the original video code stream image of first display module, 1013 usefulness display stream medium programs for the display device of streaming media service on the existing user terminal, can be the display of computer, also can be the display screen of TV.
2, second decoder module 1021 and second display module 1023, the examination code stream image of second decoder module, 1021 decoding original video code streams, and export to second display module 1023 synchronously, second display module 1023 shows this examination code stream image synchronously, the user be harmful to the manual review of content by preview examination code stream image, and comprises in this examination code stream image and send control command when being harmful to content;
Wherein, second display module 1023 shows preview screen, usually put in isolation and under investigation in order to realize, second display module 1023 and first display module were arranged in 1013 minutes, it can be independent auxiliary display device, be convenient control, this auxiliary display device can be arranged on remote controller or handheld terminal, and the code stream image display signal is issued remote controller by wired or wireless connections separately or other small-sized handheld terminal with such format standard signal that can receive shows with examining.Commercially produced product by swap data between wave point such as bluetooth and other household electrical appliances such as a lot of mobile phones, PAD has been arranged at present.The benefit that adopts this mode is that the people (the normally head of a family) that preview image is only held remote controller/other handheld device can see that others (minor) can't see, and stopped the infringement of harmful content fully.
Certainly, also second display module 1023 can be shown as a sprite in first display module 1013.
3, user instruction processing module 1031 and user instruction input module 1032, the user is by second display module, 1023 previews examination code stream image, and send control command when in this examination code stream image, comprising harmful content, user instruction input module 1032 receives and handles this control command, triggers first display module 1013 according to this control command and stops to show original video code stream image.
User instruction processing module 1031 is handled the user's control command from user instruction input module 1032, and and the user carry out alternately generation graphic user interface, and the surface chart graphic data delivered on first display module 1013 show.Content safety feedback command for user's input, announcement information feedback module 108 is collected relevant information and is produced feedback message, and feedback message sends to network side Content Advisor system, EPG/ metadata system or third party URL service system by network side first communication module 1041.
4, first communication module 1041 and second communication module 1042, first communication module 1041 connect first decoder module 1011 and second decoder module 1021 respectively;
If based on the hierarchical coding technology, as shown in figure 10, directly connect mutually between first decoder module 1011 and second decoder module 1021; First communication module 1041 receives the original video code stream that adopts the hierarchical coding mode to compress from network side, this original video code stream comprises basic layer bit stream and one deck enhancement layer bitstream at least, first communication module 1041 is exported to first decoder module 1011 with enhancement layer bitstream wherein, basic layer bit stream is exported to second decoder module 1021 as the examination code stream, the basic layer bit stream image of second decoder module, 1021 decodings, first decoder module 1011 have been finished the basic layer bit stream and the corresponding enhancement layer bitstream decoding and reconstituting original video code stream image of decoding according to second decoder module 1021.
If based on special use examination code stream technology, directly do not connect between first decoder module 1011 and second decoder module 1021 (Figure 10 shows that the previous case); First communication module 1041 is exported to first decoder module 1011 from network side parallel receive original video code stream with based on the low code check examination code stream that this original video code stream produces with the original video code stream, will examine code stream and export to second decoder module 1021.
5, show that processing module 105, the first decoder modules 1011 link to each other with demonstration processing module 105 by Postponement module 1012; Second decoder module 1021 is by showing that processing module 105 links to each other with second display module 1023; Show that 105 pairs of video code flow images of processing module carry out relevant treatment.
6, the head of a family locks database 1061, connects second communication module 1042, and the head of a family of storage user input locks data;
The head of a family locks processing module 1062, is connected between EPG message processing module 1063 and the second communication module 1042, and connects first decoder module 1011 simultaneously, locks data according to the metadata information of video code flow and the head of a family streaming medium content is mated filtration.
Electronic programming instructs EPG message processing module 1063, connects first communication module 1041, receives and handle the metadata information of the original video code stream that the EPG/ metadata system of network side sends by first communication module 1041;
7, the url filtering information database 1071, connect second communication module 1042, the url filtering information of storage user input;
Url filtering processing module 1072 is connected between url filtering information database 1071 and the first communication module 1041, according to the harmful content source of the filtration URL information filtering of user's input.
8, the feedback information module 108, be connected between user instruction processing module 1031 and the first communication module 1041, according to the video code flow relevant information of the harmful content of user feedback instruction fetch, and feedback message is sent to the network side related system by first communication module 1041.
As shown in Figure 5, feedback information module 108 comprises one of following at least:
The 3rd feedback unit 1083 extracts the URL information of original video code stream and feeds back to network side third party URL rating system according to user's feedback command from first communication module 1041.
9, main control module 1091, connect other each module respectively, the operation of control subscriber terminal equipment, user instruction processing module 1031 sends to this main control module 1091 with user's control command, and this main control module 1091 controls first display module 1013 stops/continuing showing original video code stream image;
Out of Memory processing module 1092, be connected between first communication module 1041 and the main control module 1091, reception is from the out of Memory of network side and export to main control module 1091, main control module 1091 is distributed to correlation module again, and this out of Memory comprises network management information or software version update information at least.
Replace content library 1094, be connected and show between processing module and the main control module 1091, when main control module 1091 stopped to show original video code stream image at first display module 1013, notice demonstration processing module 105 was extracted to replace content and export to first display module 1013 from replace content library and is shown.
In case the user finds the examination code stream image of preview and goes wrong; can stop reception/decode content Media Stream by user instruction input module 1032 (for example remote controller) control subscriber terminal equipment at once; command terminal is play the video and the audio-frequency fragments of storage in advance; such as the cartoon of liking, perhaps display screen protection.For adopting independent second display device (for example remote controller) to show under the situation of preview video, can also allow to continue to accept the examination code stream, can know so when harmful part is play in the past, behind harmful end of text, can in time control subscriber terminal equipment and continue to play original video code stream image.
The method that realizes above-mentioned control is a lot, can realize by different user instruction (for example specific remote controller buttons) is set.The head of a family oneself decides the button of taking what measure and corresponding operating correspondence according to current display mode.Under the situation that adopts the remote controller displays preview video, the head of a family can stop to receive enhancement layer bitstream by command terminal, and receives only basic layer bit stream.For the non-layered situation, the head of a family can stop the displaying contents code stream by command terminal, only shows the preview code stream.Button can be a plurality of, handles multiple situation, and is cumbersome like this, and benefit is people's an autonomous degree height.Also can be one, foolproof, but people's autonomous degree is poor.To stop to play harmful content such as the user,, but after terminal system is received this instruction,, whether adopt and separate display mode and take action intelligently automatically according to current whether hierarchical coding as long as by a button.
Utilize the present invention program, to main flow is control and the deletion that healthy content is carried out local harmful content, thereby can play the effect of " extraction elite, repel waste matter ", for the at utmost absorption and the utilization of the country variant and the excellent culture in historical age provides technical conditions.
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 (26)
1, a kind of subscriber terminal equipment of realizing stream media content checking is characterized in that, comprising:
First decoder module, Postponement module and first display module, wherein, described Postponement module is connected between first decoder module and first display module, and the original video code stream image of the described first decoder module decoding and reconstituting streaming media service and delayed module postpone to export to first display module and show;
Second decoder module and second display module, the decode examination code stream image of described original video code stream of described second decoder module, and export to second display module synchronously and show, the user sends control command when examining described examination code stream image and comprising harmful content in this examination code stream image;
The user instruction processing module receives the also control command of process user, triggers first display module according to this control command and stops to show described original video code stream image.
2, subscriber terminal equipment as claimed in claim 1, it is characterized in that, described subscriber terminal equipment also comprises: first communication module, connect described first decoder module and second decoder module respectively, and directly connect mutually between described first decoder module and second decoder module;
Described first communication module receives the original video code stream that adopts the hierarchical coding mode to compress from network side, this original video code stream comprises basic layer bit stream and one deck enhancement layer bitstream at least, first communication module is exported to first decoder module with enhancement layer bitstream wherein, basic layer bit stream is exported to second decoder module as the examination code stream, the second decoder module basic layer bit stream image of decoding, first decoder module have been finished the basic layer bit stream and the corresponding described original video code stream of the enhancement layer bitstream decoding and reconstituting image of decoding according to second decoder module.
3, subscriber terminal equipment as claimed in claim 1 is characterized in that, described subscriber terminal equipment also comprises: first communication module connects described first decoder module and second decoder module respectively;
Described first communication module is examined code stream from the described original video code stream of network side parallel receive with based on the low code check that this original video code stream produces, described original video code stream is exported to first decoder module, described examination code stream is exported to second decoder module.
4, want 1,2 or 3 described subscriber terminal equipments as right, it is characterized in that, described subscriber terminal equipment also comprises: show processing module, be connected between described Postponement module and described first display module; Second decoder module links to each other with second display module by described demonstration processing module; Described demonstration processing module is carried out relevant treatment to described original video code stream image.
5, subscriber terminal equipment as claimed in claim 4, it is characterized in that, described subscriber terminal equipment also comprises: second communication module and user instruction input module, wherein, described second communication module is connected between described user instruction processing module and the user instruction input module, and described user instruction input module receives user's control command and is transferred to the user instruction processing module by second communication module.
6, subscriber terminal equipment as claimed in claim 5 is characterized in that, described second display module independently is provided with or merges setting with the user instruction input module.
7, subscriber terminal equipment as claimed in claim 5 is characterized in that, described subscriber terminal equipment also comprises:
Electronic programming instructs the EPG message processing module, receives and handle the metadata information of the described original video code stream that the EPG/ metadata system of network side sends by described first communication module;
The head of a family locks database, connects described second communication module, and the storage user locks data by the head of a family of described user instruction input module input;
The head of a family locks processing module, be connected between described EPG message processing module and the second communication module, and connect described first decoder module simultaneously and the described head of a family locks database, lock data according to described metadata information and the head of a family streaming medium content is mated filtration.
8, subscriber terminal equipment as claimed in claim 5 is characterized in that, described subscriber terminal equipment also comprises:
The url filtering information database connects described second communication module, and the storage user is by the url filtering information of described user instruction input module input;
The url filtering processing module is connected between url filtering information database and the first communication module, according to the harmful content source of the url filtering information filtering of user's input.
9, subscriber terminal equipment as claimed in claim 5, it is characterized in that, described subscriber terminal equipment also comprises: the feedback information module, be connected between user instruction processing module and the first communication module, extract the video code flow relevant information of harmful content and relevant information is fed back to network side by the feedback command of described user instruction input module input by first communication module according to the user.
10, subscriber terminal equipment as claimed in claim 5 is characterized in that, described user instruction input module comprises at least: user feedback instruction input unit.
11, subscriber terminal equipment as claimed in claim 9 is characterized in that, it is one of following that described feedback information module comprises at least:
First feedback unit extracts the EPG/ metadata system that the title of this original video code stream provider and/or code name, this original video code stream send the programm name and/or the numbering of the title of channel and/or numbering and this original video code stream and feed back to network side from electronic programming instructs the metadata information of the original video code stream that the EPG message processing module receives;
Second feedback unit extracts the video code flow Content Advisor system that the title of this original video code stream provider and/or code name, this original video code stream send the programm name and/or the numbering of the title of channel and/or numbering and this original video code stream and feed back to network side the metadata information of the original video code stream that receives from the EPG message processing module;
The 3rd feedback unit extracts the URL information of this original video code stream and feeds back to network side third party URL rating system from first communication module.
12, as one of any described subscriber terminal equipment of claim 6-11, it is characterized in that described subscriber terminal equipment also comprises: main control module, connect other each module respectively, control the operation of described subscriber terminal equipment.
13, subscriber terminal equipment as claimed in claim 12 is characterized in that, described subscriber terminal equipment also comprises one of following or combination in any:
The out of Memory processing module, be connected between described first communication module and the main control module, reception is from the out of Memory of network side and export to main control module, and main control module is distributed to correlation module again, and this out of Memory comprises network management information or software version update information at least;
Logger module connects other each module respectively, writes down the running log of described subscriber terminal equipment and generates Log Report;
Described subscriber terminal equipment also comprises: replace content library, be connected between described demonstration processing module and the main control module, when described main control module stopped to show described original video code stream image at first display module, notice showed that processing module is extracted to replace content and export to first display module and shows from replace content library.
14, subscriber terminal equipment as claimed in claim 5 is characterized in that, described user instruction input module includes but not limited to: the control panel of keyboard, remote controller, set-top box and based on the software control interface of personal computer.
As claim 5 or 14 described subscriber terminal equipments, it is characterized in that 15, described user instruction input module comprises at least: user's control command input unit.
16, a kind of method that realizes the video content examination on subscriber terminal equipment is characterized in that, comprises the steps:
The examination code stream image of subscriber terminal equipment decoding original video code stream is also exported to second display module of subscriber terminal equipment synchronously, described second display module shows this examination code stream image, and the user examines described examination code stream image and comprises in this examination code stream image and sends control command when being harmful to content;
The original video code stream image of subscriber terminal equipment decoding and reconstituting streaming medium content also postpone to show at first display module and to stop to show described original video code stream image by this original video code stream image when receiving user's control command.
17, method as claimed in claim 16, it is characterized in that, described original video code stream is basic layer bit stream and one deck enhancement layer bitstream at least by the content source hierarchical coding, wherein, described basic layer bit stream is the examination code stream, and subscriber terminal equipment is according to the basic layer bit stream of finishing decoding and the corresponding described original video code stream of enhancement layer bitstream decoding and reconstituting image.
18, method as claimed in claim 17, it is characterized in that, described examination code stream is the special-purpose examination of the low code check code stream that network equipment generates based on described original video code stream, and network equipment will hang down code check special-purpose examination code stream and the corresponding parallel together subscriber terminal equipment that is transmitted to of original video code stream.
19, method as claimed in claim 16 is characterized in that, before described subscriber terminal equipment decoding original video code stream, described method also comprises: the harmful content source of url filtering information filtering that subscriber terminal equipment is imported in advance according to the user.
20, method as claimed in claim 19 is characterized in that, the filtration of described harmful content source comprises:
Forbid that the harmful content source in url filtering information sends the streaming medium content request; Perhaps
Forbid receiving the streaming medium content that the harmful content source in the url filtering information pushes.
21, method as claimed in claim 16 is characterized in that, described method also comprises:
When subscriber terminal equipment stops to show described original video code stream image according to user's control command, obtain following relevant information: the title of the provider of the original video code stream that stops to show and/or code name, the original video code stream that stops to show send the title of channel and/or numbering and the programm name or the numbering of the original video code stream that stops to show; And
When receiving the feedback command of user's input, above-mentioned relevant information is fed back to network side EPG/ metadata system and/or network side video code flow Content Advisor system.
22, method as claimed in claim 16 is characterized in that, described method also comprises:
When subscriber terminal equipment stops to show described original video code stream image according to user's control command, obtain the URL information of this original video sign indicating number; And
When receiving the feedback command of user's input, the URL feedback information of the original video sign indicating number that will stop to show is given network side third party URL rating system.
23, as claim 21 or 22 described methods, it is characterized in that subscriber terminal equipment obtains and feed back harmful content-level information that time period information that harmful content occurs and/or user provide when stopping to show described original video code stream image according to user's control command.
24, method as claimed in claim 16 is characterized in that, when subscriber terminal equipment stops to show described original video code stream image according to user's control command, keeps showing described examination code stream image.
25, method as claimed in claim 21 is characterized in that, when subscriber terminal equipment stops to show described original video code stream image according to user's control command, shows to be kept at the replacement content of replacing in the content library in advance.
26, method as claimed in claim 16 is characterized in that, the delay demonstration time of described original video code stream image examines the described needed time of examination code stream image according to the user and determines.
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| CN103081504B (en) * | 2010-09-06 | 2017-02-08 | 韩国电子通信研究院 | Apparatus and method for providing streaming content |
| CN102281472B (en) * | 2011-09-02 | 2016-06-01 | 刘敬梅 | A kind of encryption management video broadcasting system |
| CN102387420B (en) * | 2011-09-23 | 2016-06-01 | 刘敬梅 | A kind of method of encryption handling video playback |
| CN103347022A (en) * | 2013-07-04 | 2013-10-09 | 深圳市共进电子股份有限公司 | Method for safely accessing CPE page |
| CN103716690B (en) * | 2013-12-27 | 2017-09-01 | 广州华多网络科技有限公司 | Method, terminal, server and the system of multimedia live broadcast report |
| CN104540024B (en) * | 2014-12-18 | 2019-03-08 | 网宿科技股份有限公司 | Video terminal and its method and system for limiting video playing |
| CN104954864B (en) * | 2015-06-19 | 2019-03-01 | 中国人民解放军信息工程大学 | Bi-directional set-top box intruding detection system and its detection method |
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