CN102647635B - A kind of method, Apparatus and system preventing video finger print from attacking - Google Patents
A kind of method, Apparatus and system preventing video finger print from attacking Download PDFInfo
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Abstract
The present invention discloses a kind of method, the Apparatus and system that prevent video finger print from attacking, and the method comprises: terminal generates user fingerprints information, and described user fingerprints information can the source of marking video; Terminal obtains fingerprint position information in current frame period from the packet having fingerprint position information in current frame period; According to terminal generate user fingerprints information and current frame period in fingerprint position information, on-screen menu is utilized to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller to obtain the stealthy fingerprint of OSD, superpose with decoded original video, obtain the video with stealthy fingerprint.The present invention embeds stealthy fingerprint in video by the parameter of amendment osd controller, makes video finger print not easily be attacked, enhances the robustness of video finger print, reach the object preventing video finger print from attacking under the prerequisite not affecting video quality; Meanwhile, OSD general-purpose interface is utilized to eliminate STB terminal decoder module customization trouble.
Description
Technical field
The present invention relates to the video finger print technology in digital TV field content protective system, particularly relate to a kind of method, the Apparatus and system that prevent video finger print from attacking.
Background technology
Along with the development of digital television techniques, utilize digital technology to produce content of multimedia, store, transmit and play quite universal, people can be easy to find the multimedia resources such as a large amount of videos, audio frequency from TV, but also there is the resources such as the video of too many duplicate and conversion, some of them may be illegally copy.For digital television program copyright holder, annual because piracy causes very large economic loss to it.
Conditional Access of Digital Television (CA; certificationauthority) in system; very ripe to the encipherment protection technology of video in front end and video transmitting procedure; but in the terminal of CA system; video is completely open after the decoding to be play to user; as video content deciphered by validated user after carry out recording or by video camera reproduction, media content is easy to be copied and distribute, there is pirate threat.In order to the video content after giving deciphering provides further protection, follows the trail of pirate content and finds pirate source, video finger print technology is arisen at the historic moment, and namely video finger print technology becomes the effective means and key technology that solve problem of piracy.
Video finger print, as the new tool of video resource administrative protection, characterizes inward nature's attribute of video content, identifies one section of video sequence uniquely.See Fig. 1, video finger print technology overall plan is as follows: video is issued different terminal uses (terminal use 1, terminal use 2 and terminal use 3) by distributing network by head end video service device, oneself different exclusive information (being called finger print information) is had the user that terminal is different, these exclusive information insertion in video, are then played to user by terminal.Because the fingerprint of different user is different, therefore the fingerprint video of different user broadcasting viewing is also different, when piracy occurs, can finally determine pirate source according to the user profile comprised in video, thus the copyright of protection digital video.
At present, the fingerprint technique based on CA system can be divided into front end fingerprint technique and Terminal fingerprints technology.When carrying out fingerprint embedding in front end, even if different authorized users requires the same video content of viewing, due to the difference of finger print information, video server also must to the same video content of each user's distribution containing different fingerprint, because number of users is large, the distribution capability of server is limited, must cause and block up, and cannot normally watch.Therefore, select to embed fingerprint in terminal, embed video finger print in terminal, solve the problem of front-end server distribution, also do not have special requirement to bandwidth, be a reasonable selection concerning CA system.
In existing CA system, the technical scheme that a kind of terminal embeds fingerprint is: generate unique user fingerprints information according to user terminal information, based on the video (spatial domain) after decoding terminals carry out fingerprint embedding or half-and-half decoded video (frequency domain) carry out fingerprint embedding, in this technical scheme, the mode of fingerprint embedding can follow the realization of multiple embedded mobile GIS, as symmetrical or asymmetric key algorithm etc.
The technical scheme that another kind of terminal embeds fingerprint is: generate unique user fingerprints information according to user terminal information; OSD (On-screendisplay is there is in terminal content protection system; screen menu type regulative mode) general-purpose interface; sound, video stream data that terminal is sent by Set Top Box receiving front-end device; OSD general-purpose interface is utilized to revise OSD parameter; described user fingerprints is added in decoded video; the video that different user is watched has different visible fingerprint; thus reach copyright protection, the object of tracing pirate.
More above-mentioned two schemes, in the first embodiment, fingerprint embedding carries out in video decoding process, because terminal set top box is production firm's research and development, the decoder module of terminal set top box is not open nature, as carried out fingerprint embedding in video decoding process, need to modify to decoder module, make this technology need to customize when terminal set top box is produced, there is very large limitation; In the second embodiment, piracy tracking differentiates according to the vision system of people, when piracy occurs, pirate user also easily with the naked eye identifies visible fingerprint, under the prerequisite not affecting video effect, use some means to process video, by the visible fingerprint erasing in original video or destruction, thus causing piracy tracking to lose efficacy, this belongs to the behavior that a kind of video finger print is attacked.In actual applications, attack usually occurs, as long as do slight process to video: such as frame deletion, coding etc., all can bring destruction to a certain degree to video finger print.
For these reasons, need a kind of mechanism that can prevent video finger print from attacking to protect the copyright of digital video.
Summary of the invention
In order to overcome defect of the prior art and deficiency, the present invention proposes a kind of method, the Apparatus and system that can effectively prevent video finger print from attacking.
The present invention discloses a kind of method preventing video finger print from attacking, and comprising:
S1: terminal generates user fingerprints information, described user fingerprints information can the source of marking video;
S2: terminal obtains the fingerprint position information in current frame period from the packet having fingerprint position information in current frame period;
S3: according to terminal generate user fingerprints information and current frame period in fingerprint position information, on-screen menu is utilized to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video, obtains the video with stealthy fingerprint.
Further, the unique identification information (ID) according to each user terminal in described step S1 generates binary user fingerprints information.
Further, in described step S2, fore device selects the video location that human eye vision susceptibility is low to generate fingerprint position information in conjunction with human visual system to the susceptibility of video.
Further, the user fingerprints information generated according to terminal in described step S3 obtains rgb value and the transparence value of revising on-screen menu conditioning controller needs, obtains according to the fingerprint position information in current frame period the location parameter revising on-screen menu conditioning controller needs.
Further, the step obtained in described step S3 with stealthy fingerprint video is: fore device inserts the packet of the fingerprint position information had in current frame period in original sound, video flowing with the predetermined frame period, described packet and original sound, video flowing are carried out synthesis process and obtains new sound, video stream to terminal; Terminal receives new sound, video flowing carries out the packet that demultiplexing obtains video, audio frequency and has fingerprint position information in current frame period, the fingerprint position information obtained in current frame period is resolved from the packet having fingerprint position information in current frame period, according to terminal generate user fingerprints information and current frame period in fingerprint position information, the parameter of amendment on-screen menu conditioning controller, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video, obtains the video with stealthy fingerprint.
Further, when the stealthy fingerprint of OSD superposes with decoded original video, if the fingerprint positions figure place in current frame period and user fingerprints information digit unequal, user fingerprints information does not all embed by the fingerprint positions in current frame period, and remaining user fingerprints information can continue to embed within the next frame period.
The present invention discloses a kind of device preventing video finger print from attacking, and described device comprises demultiplexing module, decoder module, fingerprint position information parsing module, fingerprint generation module, on-screen menu regulable control module, synthesis module and playing module;
Demultiplexing module is used for the sound received, video flowing demultiplexing are obtained to video, audio frequency and have the packet of fingerprint position information in current frame period;
Decoder module is used for the audio frequency after demultiplexing, video decode, obtains original video, original audio;
Fingerprint position information parsing module, for resolving the fingerprint position information obtained in current frame period from the packet having a fingerprint position information in current frame period;
Fingerprint generation module, for generating unique user fingerprints information, described user fingerprints information can the source of marking video;
On-screen menu regulable control module, for the fingerprint position information in the user fingerprints information that generates according to terminal and current frame period, utilizes on-screen menu to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtains the stealthy fingerprint of OSD;
Synthesis module is used for carrying out synchronized compound process to the stealthy fingerprint of OSD and the rear original video of decoding, original audio;
Playing module is for playing the video after synthesis process.
Further, described user fingerprints information generates according to the unique identification information (ID) of each user terminal.
Further, described on-screen menu regulable control module comprises color adjusting unit and position adjustment unit; Color adjusting unit is used for rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller generated according to terminal, and position adjustment unit is used for the location parameter according to fingerprint position information amendment on-screen menu conditioning controller in current frame period.
The present invention also discloses a kind of system preventing video finger print from attacking, described system comprises fore device and terminal installation, fore device obtains the fingerprint position information of video in conjunction with human eye vision susceptibility, in original sound, video flowing, insert the packet having fingerprint position information in current frame period with the predetermined frame period, described packet and original sound, video flowing are synthesized process and obtains new sound, video stream to terminal, terminal installation receives new sound, video stream data also carries out demultiplexing and obtains original video, original audio and the packet having fingerprint position information in current frame period, the fingerprint position information obtained in current frame period is resolved from the packet having fingerprint position information in current frame period, according to rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller of terminal generation, according to the location parameter of fingerprint position information amendment on-screen menu conditioning controller in current frame period, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video the video obtained with stealthy fingerprint.
Technical scheme of the present invention embeds stealthy fingerprint in video by the parameter of amendment osd controller, under the prerequisite not affecting video quality, make video finger print not easily be attacked, enhance the robustness of video finger print, reach the object preventing video finger print from attacking, the available protecting copyright of digital video; Meanwhile, OSD general-purpose interface is utilized to eliminate STB terminal decoder module customization trouble.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of video finger print technology in existing CA system;
Fig. 2 is the system architecture diagram preventing video finger print from attacking of the embodiment of the present invention;
Fig. 3 is the apparatus structure block diagram preventing video finger print from attacking of the embodiment of the present invention;
Fig. 4 is the method flow diagram preventing video finger print from attacking of the embodiment of the present invention;
Fig. 5 is the particular flow sheet of the method preventing video finger print from attacking of the embodiment of the present invention.
Embodiment
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be described in detail below in conjunction with execution mode.
Fig. 2 is the system architecture diagram preventing video finger print from attacking of the embodiment of the present invention.Described system comprises fore device and terminal installation, and described fore device comprises video server, and terminal installation comprises TV set-top box and display screen, video server provides video information for user terminal, video server inserts with the predetermined frame period in advance in original sound, video flowing has the packet of fingerprint position information in current frame period, described packet and original sound, video flowing is carried out obtaining new sound after synthesis processes, video flowing sends to terminal by distributing network, terminal TV Set Top Box receives new sound, video stream data, video is obtained by demultiplexing, audio frequency and the packet having fingerprint position information in current frame period, to the video after demultiplexing, audio decoder obtains original video, original audio, the fingerprint position information that the packet of current frame period fingerprint position information, parsing obtains in current frame period is had from described, according to rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller of terminal generation, according to the location parameter of fingerprint position information amendment on-screen menu conditioning controller in current frame period, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD and decoded original video, original audio is play after synthesizing synchronous process.
Wherein, fore device comprises fingerprint position information generation module, for selecting the video location that human eye sensitivity is low to generate fingerprint position information in conjunction with human visual system to the susceptibility of video.Described video carries out video decode by original sound, video flowing and obtains.
When the stealthy fingerprint of OSD superposes with decoded original video, if the fingerprint positions figure place in current frame period and user fingerprints information digit unequal, user fingerprints information does not all embed by the fingerprint positions in current frame period, and remaining user fingerprints information can continue to embed within the next frame period.
User fingerprints information is the binary user finger print information that the unique identification information (ID) according to each user terminal generates.
Fig. 3 is the apparatus structure block diagram preventing video finger print from attacking of the embodiment of the present invention.Described device is TV set-top box, comprises demultiplexing module, decoder module, fingerprint position information parsing module, fingerprint generation module, on-screen menu regulable control module, synthesis module and playing module; Demultiplexing module is used for carrying out to the sound received, video flowing the packet that demultiplexing obtains video, audio frequency and has fingerprint position information in current frame period; Decoder module is used for decoding to the video after demultiplexing, audio frequency, obtains original video, original audio; Fingerprint position information parsing module, for resolving the fingerprint position information obtained in current frame period from the packet having a fingerprint position information in current frame period; Fingerprint generation module, for generating unique user fingerprints information, described user fingerprints information can the source of marking video; On-screen menu regulable control module, for the fingerprint position information in the user fingerprints information that generates according to terminal and current frame period, utilizes on-screen menu to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtains the stealthy fingerprint of OSD; Synthesis module is used for carrying out synchronized compound process to the stealthy fingerprint of OSD and decoded original video, original audio; Playing module is for playing the video after synthesis process.
When video occurs pirate, obtain user profile according to the user fingerprints information extracted from video and finally obtain pirate source, thus realize pirate accurate tracking.
Wherein, on-screen menu regulable control module comprises color adjusting unit and position adjustment unit; Color adjusting unit is used for rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller generated according to terminal, and position adjustment unit is used for the location parameter according to fingerprint position information amendment on-screen menu conditioning controller in current frame period.
Fig. 4 is the method flow diagram preventing video finger print from attacking of the embodiment of the present invention.The method comprises the steps:
S1: terminal generates user fingerprints, described user fingerprints can the source of marking video.
Generate unique binary user finger print information according to information of terminal user, information of terminal user is the information with uniqueness that can distinguish different terminals user, as the unique identification information (user ID) of each user terminal.Described user fingerprints information is generated according to the unique identification information of user terminal by the fingerprint generation module of Set Top Box.When piracy occurs, obtain user profile according to described user fingerprints, finally determine pirate source.
S2: terminal obtains the fingerprint position information in current frame period from the packet having fingerprint position information in current frame period.
Wherein, the step obtaining fingerprint position information in current frame period is: fore device inserts the packet of the fingerprint position information had in current frame period in original sound, video flowing with the predetermined frame period, described packet and original sound, video flowing are carried out synthesis process and obtains new sound, video stream to terminal; Terminal receives new sound, video flowing carries out the packet that demultiplexing obtains video, audio frequency and has fingerprint position information in current frame period, and fingerprint positions parsing module resolves the fingerprint position information obtained in current frame period from the packet having fingerprint position information in current frame period.
Fore device comprises fingerprint position information generation module, original sound, video flowing obtain original video and original audio information through decoding, select the video location that human eye sensitivity is low to generate fingerprint position information in conjunction with human visual system to the susceptibility (high-brightness region additional noise susceptibility, texture area susceptibility, high-frequency information susceptibility etc.) of original video.
S3: according to terminal generate user fingerprints information and current frame period in fingerprint position information, on-screen menu is utilized to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video, obtains the video with stealthy fingerprint.
On-screen menu regulates the application of (OSD) controller over the display, menu management is carried out to media content, make display in screen, produce some special font or figures, comprise color, pattern, geometry etc. by this menu to display work in every index to adjust, thus reach best using state.Fingerprint position information in the user fingerprints information that the technical scheme of the present embodiment generates according to terminal and current frame period, on-screen menu is utilized to regulate general-purpose interface amendment on-screen menu to regulate the parameter of (OSD) controller, make the user fingerprints that is added in original video invisible, overcome in prior art the shortcoming of ability utilizing on-screen menu to regulate (OSD) general-purpose interface amendment OSD parameter to realize visible fingerprint information insertion affect video quality and resist Fingerprint Attacking.
Fingerprint position information in the user fingerprints information that the on-screen menu regulable control module of Set Top Box generates according to terminal and current frame period, on-screen menu is utilized to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video, obtains the video with stealthy fingerprint; Wherein, on-screen menu regulable control module comprises color adjusting unit and position adjustment unit; Color adjusting unit is used for rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller generated according to terminal, and position adjustment unit is used for the location parameter according to fingerprint position information amendment on-screen menu conditioning controller in current frame period.
Realize the sightless algorithm of user fingerprints as follows:
S301: the positional information according to human visual system, the susceptibility of video being generated to fingerprint in fore device.
In general, human visual system has following characteristics: 1) very low to the additional noise susceptibility of high-brightness region; 2) to the susceptibility of texture region lower than smooth region; 3) to high-frequency information susceptibility lower than low frequency information.
In fore device, original sound, video flowing obtain original video and original audio through decoding, the position that human eye vision susceptibility is low is selected to generate fingerprint position information in conjunction with human visual system to the susceptibility (high-brightness region additional noise susceptibility, texture area susceptibility, high-frequency information susceptibility etc.) of video, using position low for human eye vision susceptibility in video as the region embedding fingerprint, be conducive to the transparency of fingerprint embedding rear video, do not affect user and watch video.
S202: by the packet having a fingerprint position information according to the predetermined frame period insert in original sound, video flowing obtain new sound through synthesis process, video flowing sent to terminal by distributing network.
The predetermined frame period can be selected, if each frame period is 200 two field pictures actual conditions such as frame period packet resolution speed according to Set Top Box.
S203: terminal receives new sound, video flowing carries out demultiplexing and obtains original video, original audio is believed and is had the packet of fingerprint position information in current frame period, from described have the packet of fingerprint position information in current frame period resolve through fingerprint position information parsing module the fingerprint position information obtained in current frame period, according to terminal generate user fingerprints information and current frame period in fingerprint position information, on-screen menu is utilized to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video, obtain the video with stealthy fingerprint.
Wherein, user fingerprints is the binary fingerprints information generated according to the user totem information of each user terminal, binary fingerprints information is non-zero is 1, the rgb value and the transparence value (being called OSD parameter) that obtain two groups of different OSD in (OSD) control module for 0 and 1 is regulated at on-screen menu, by rgb value and the transparence value of amendment on-screen menu conditioning controller, realize user fingerprints invisible.
In the insensitive position of human eye, fingerprint is embedded because fingerprint position information have selected, the coordinate corresponding according to fingerprint position information amendment on-screen menu conditioning controller, in addition in the selection of OSD parameter, also human visual system's sensitivity problem has been taken into full account according to user fingerprints information, therefore the final video seen of user is with stealthy finger print information (the stealthy fingerprint of OSD), making user fingerprints information resist video attacking ability when not affecting viewing quality to strengthen, enhancing the robustness of fingerprint.
On-screen menu regulable control module comprises color adjusting unit and position adjustment unit; Color adjusting unit is used for rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller generated according to terminal, and position adjustment unit is used for the location parameter according to fingerprint position information amendment on-screen menu conditioning controller in current frame period.
When the stealthy fingerprint of OSD superposes with decoded original video, if the fingerprint positions figure place in current frame period and user fingerprints information digit unequal, user fingerprints information does not all embed by the fingerprint positions in current frame period, and remaining user fingerprints information can continue to embed within the next frame period.
When piracy occurs, from displaying video, extract user fingerprints information obtain user profile, thus realize accurate tracing pirate source.Bootlegger is in order to destroy the finger print information contained in video, will in cold blood to the change that video carries out to a certain degree, in addition, more any non-premeditated vision operations (such as AV records), injury is brought to video itself in capital, thus the video finger print made lost efficacy, no matter premeditated video change was also the injury of non-premeditated video, was referred to as video finger print and attacked.
By test, the video finger print technology of the embodiment of the present invention, after the Fingerprint Attacking that following table 1 is enumerated, still can effectively extract user fingerprints information, thus achieves pirate accurate tracking.
Table 1
Fig. 5 is the particular flow sheet of the method preventing video finger print from attacking of the embodiment of the present invention.Concrete implementing procedure is as follows:
1) fore device inserts the packet having fingerprint position information in current frame period in original sound, video flowing with the frame period of 200 frames, described packet and original sound, video flowing is carried out synthesis process obtains new sound, video flowing sends to terminal by distributing network; Described fingerprint position information selects the video location that human eye vision susceptibility is low to generate in conjunction with human visual system to the susceptibility (high-brightness region additional noise susceptibility, texture area susceptibility, high-frequency information susceptibility etc.) of original video; The fingerprint position information figure place of described generation can be selected according to actual conditions (as generated the fingerprint position information of 4 binary digits); Described original video is obtained original sound, decoding video stream by fore device;
2) unique binary user finger print information is generated according to the unique identification information (ID) of terminal use; The figure place of described binary fingerprints information can be identical with fingerprint position information figure place, also can different the finger print information of binary digit (finger print information as generated to be 8 be);
3) terminal receives new sound, video flowing, obtain video, audio frequency by demultiplexing and have the packet of fingerprint position information in current frame period, original video, original audio are obtained to the video after demultiplexing, audio decoder, from described have the packet of fingerprint position information in current frame period resolve by fingerprint position information parsing module the fingerprint position information obtained in current frame period;
4) on-screen menu regulable control module revises rgb value and the transparence value of on-screen menu conditioning controller according to the user fingerprints information that terminal generates, position adjustment unit is used for, according to the location parameter of fingerprint position information amendment on-screen menu conditioning controller in current frame period, obtaining the stealthy fingerprint of OSD.
5) the stealthy fingerprint of OSD is play after synthesizing synchronous process with decoded original video, original audio.
When the stealthy fingerprint of OSD superposes with decoded original video, if the fingerprint positions figure place in current frame period (as 4 binary digits) is unequal with user fingerprints information digit (as 8 binary digits), user fingerprints information does not all embed by the fingerprint positions in current frame period (embedding 4 of user fingerprints), and remaining user fingerprints information (4 that do not embed) can continue to embed within the next frame period.
When piracy occurs, from displaying video, extract user fingerprints information obtain user profile, thus final tracing pirate source.
Technical scheme of the present invention embeds stealthy fingerprint in video by the parameter of amendment osd controller, under the prerequisite not affecting video quality, make video finger print not easily be attacked, enhance the robustness of video finger print, reach the object preventing video finger print from attacking, the available protecting copyright of digital video; Meanwhile, OSD general-purpose interface is utilized to eliminate STB terminal decoder module customization trouble.
Above are only preferred embodiment of the present invention and institute's application technology principle, be anyly familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed in protection scope of the present invention.
Claims (10)
1. the method preventing video finger print from attacking, comprising:
S1: terminal generates user fingerprints information, described user fingerprints information can the source of marking video;
S2: terminal receives new sound, video flowing carry out the packet that demultiplexing obtains video, audio frequency and have fingerprint position information in current frame period;
Terminal obtains the fingerprint position information in current frame period from the packet having fingerprint position information in current frame period;
S3: according to terminal generate user fingerprints information and current frame period in fingerprint position information, on-screen menu is utilized to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video, obtains the video with stealthy fingerprint.
2. the method preventing video finger print from attacking according to claim 1, is characterized in that, the unique identification information (ID) according to each user terminal in described step S1 generates binary user fingerprints information.
3. the method preventing video finger print from attacking according to claim 1, is characterized in that, in described step S2, fore device selects the video location that human eye sensitivity is low to generate fingerprint position information in conjunction with human visual system to the susceptibility of video.
4. the method preventing video finger print from attacking according to claim 1, it is characterized in that, the user fingerprints information generated according to terminal in described step S3 obtains rgb value and the transparence value of revising on-screen menu conditioning controller needs, obtains according to the fingerprint position information in current frame period the location parameter revising on-screen menu conditioning controller needs.
5. the method preventing video finger print from attacking according to claim 1, it is characterized in that, the step obtaining the stealthy fingerprint of OSD in described step S3 is: fore device inserts the packet having fingerprint position information in current frame period in original sound, video flowing with the predetermined frame period, described packet and original sound, video flowing are carried out synthesis process and obtains new sound, video stream to terminal; Terminal receives new sound, video flowing carries out the packet that demultiplexing obtains video, audio frequency and has fingerprint position information in current frame period, the fingerprint position information obtained in current frame period is resolved from the packet having fingerprint position information in current frame period, according to terminal generate user fingerprints information and current frame period in fingerprint position information, the parameter of amendment on-screen menu conditioning controller, obtains the stealthy fingerprint of OSD.
6. the method preventing video finger print from attacking according to claim 5, it is characterized in that, when stealthy for OSD fingerprint is superposed with decoded original video, if the fingerprint positions figure place in current frame period and user fingerprints information digit unequal, user fingerprints information does not all embed by the fingerprint positions in current frame period, and remaining user fingerprints information can continue to embed within the next frame period.
7. prevent the device that video finger print is attacked, described device comprises demultiplexing module, decoder module, fingerprint position information parsing module, fingerprint generation module, on-screen menu regulable control module, synthesis module and playing module;
Demultiplexing module is used for the sound received, video flowing demultiplexing are obtained to video, audio frequency and have the packet of current frame period fingerprint position information;
Decoder module is used for decoding to the video after demultiplexing, audio frequency, obtains original video, original audio;
Fingerprint position information parsing module, for resolving the fingerprint position information obtained in current frame period from the packet having a fingerprint position information in current frame period;
Fingerprint generation module, for generating unique user fingerprints information, described user fingerprints information can the source of marking video;
On-screen menu regulable control module, for the fingerprint position information in the user fingerprints information that generates according to terminal and current frame period, utilizes on-screen menu to regulate the parameter of general-purpose interface amendment on-screen menu conditioning controller, obtains the stealthy fingerprint of OSD;
Synthesis module is used for stealthy for OSD fingerprint and decoded original video, original audio to carry out synchronized compound process;
Playing module is for playing the video after synthesis process.
8. the device preventing video finger print from attacking according to claim 7, is characterized in that, described user fingerprints information generates according to the unique identification information (ID) of each user terminal.
9. the device preventing video finger print from attacking according to claim 7, is characterized in that, described on-screen menu regulable control module comprises color adjusting unit and position adjustment unit; Color adjusting unit is used for rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller generated according to terminal, and position adjustment unit is used for the location parameter according to fingerprint position information amendment on-screen menu conditioning controller in current frame period.
10. the system preventing video finger print from attacking, described system comprises fore device and terminal installation, it is characterized in that, fore device obtains the fingerprint position information of video according to human eye vision susceptibility, in original sound, video flowing, insert the packet having fingerprint position information in current frame period with the predetermined frame period, described packet and original sound, video flowing are synthesized process and obtains new sound, video stream to terminal, terminal installation receives new sound, video flowing also carries out demultiplexing and obtains video, audio frequency and the packet having fingerprint position information in current frame period, the fingerprint position information obtained in current frame period is resolved from the packet having fingerprint position information in current frame period, according to rgb value and the transparence value of the user fingerprints information amendment on-screen menu conditioning controller of terminal generation, according to the location parameter of fingerprint position information amendment on-screen menu conditioning controller in current frame period, obtain the stealthy fingerprint of OSD, the stealthy fingerprint of OSD superposes with decoded original video the video obtained with stealthy fingerprint.
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| CN103618914B (en) * | 2013-12-16 | 2017-05-24 | 北京视博数字电视科技有限公司 | Matrix fingerprint generating method, device and system |
| CN103686333B (en) * | 2013-12-19 | 2018-04-20 | 深圳市九洲电器有限公司 | A kind of audio and video guard method and audio-video terminal |
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