KR102224469B1 - Live Streaming Video Contents Protection System - Google Patents

Abstract

A real time video content protection system in accordance with the present invention comprises: a broadcasting interface which receives real time video content from a content provider and transmits the received content to a viewer in real time; an identifier insertion module for inserting an identifier into a video frame of the video content to be transmitted; a content detection module including a search performing unit for extracting illegal content by performing keyword search for the video content on a plurality of online media through a plurality of bots, and an identifier detection unit for extracting illegal content by detecting the identifier from an upload video uploaded to the online media; and a message providing module for providing a notification message to the content provider or a warning message to a distributor who has distributed the illegal content in accordance with the detection of the illegal content.

Description

Real-time video content protection system {Live Streaming Video Contents Protection System}

The present invention relates to a real-time video content protection system, and in more detail, by inserting an identifier into video content transmitted in real time to protect the copyright of real-time online video content such as online performances in earnest in the untact as well as on-tact era. The present invention relates to a real-time video content protection system that enables transmission and detects illegal distribution content that illegally re-distributes the video content through a bot.

As social distancing has risen since Covid-19, the performance industry is facing an unprecedented recession. In the case of movies, the number of audiences is decreasing and postponements are continuing, and in the case of plays, the situation of acting in performances is breaking down. For example, concerts for performances, singing performances, etc. are indescribable, and accordingly, people living in the present era are also experiencing Corona blue.

In order to support the performance industry, live performances in an untact method have been introduced and used, which means that they are performing in line with new consumption trends, such as purchasing goods without contact with a clerk in a dictionary sense. Again, it was possible to proceed with untouch.

In the case of such an untouched real-time performance, by shooting a performance such as a concert or a play in real time and transmitting it to the viewers in a live streaming method, users connected to the platform can enjoy the real-time performance video content without visiting the site. I made it possible.

As a prior art for this, a'video live streaming system' is disclosed in Korean Patent Registration No. 10-1821145.

The present invention discloses a live video streaming system, the live video streaming system comprising: a photographing device; A time synchronization module providing a time stamp; An encoder that encodes each data unit for streaming of photographed data using a time stamp; A streaming server for synchronizing the data units of the photographing data by comparing correction time stamps of the data units of the photographing data based on a universal time; And an image processor that compares the captured images based on the captured data to remove redundancies between the captured images, and generates an output image obtained by merging the redundantly removed captured data.

In the case of such a live streaming system, there is an advantage of being able to transmit general video or video such as surround view or panorama view in real time to viewers, but if such video is re-distributed without permission, there is a limitation that it cannot be free from copyright infringement controversy. .

Therefore, in order to solve the above-described problem, in the process of providing real-time online video content such as an online performance to viewers in an untouched manner, an identifier is inserted into the video content and transmitted, and the transmitted video content is transmitted through a bot. There is a need to develop a new and advanced real-time video content protection system capable of detecting illegal distribution content that illegally re-distributes the video content by performing a search.

The present invention transmits video content in real time and transmits it by inserting an identifier into the video content in the process of broadcasting it to viewers. Then, online sites such as online sites where illegal distribution is expected through a bot for the transmitted video content. Its main purpose is to provide a real-time video content protection system capable of detecting illegal distribution content that illegally re-distributes the video content by performing a search in a medium.

Another object of the present invention is to enable insertion of an identifier that is invisible to viewers on a broadcast interface through which video content is transmitted.

A further object of the present invention is to add a detection arrangement capable of detecting an invisible identifier.

An additional object of the present invention is to enable generation of an identifier insertion pattern based on the content of video content.

A further object of the present invention is to enable insertion and transmission of null data when transmitting video content based on the content of the video content.

In order to achieve the above object, a real-time video content protection system according to the present invention includes: a broadcast interface for receiving real-time video content from a content provider and transmitting it to a viewer in real time; An identifier insertion module for inserting an identifier into an image frame of the transmitted video content; and a search for extracting illegal content by performing a keyword search for the video content in a plurality of online media through a plurality of bots. A content detection module including an identifier detector configured to extract illegal content by detecting the identifier from the uploaded image uploaded to the online medium; And a message providing module for providing a notification message to the content provider or a warning message to a distributor who has distributed the illegal content according to the detection of the illegal content.

Further, the identifier insertion module includes a positioning unit determining position information of an insertion block into which an identifier is to be inserted in the image frame, a quantization performing unit performing quantization on the insertion block, and inserting an identifier into the quantized insertion block. It characterized in that it comprises an identifier insertion unit.

In addition, the quantization performing unit may include a transform processing part that performs a discrete cosine transform process on the insertion block, and a quantization part that performs quantization on the transform-processed insertion block.

According to the real-time video content protection system according to the present invention,

1) Illegal distribution of illegally re-distributing the video content by inserting an identifier into the video content and transmitting it by transmitting video content in real time and broadcasting it to viewers, and performing a search for the transmitted video content through a bot. Content can be detected,

2) By inserting the identifier of the blind watermark method, it is possible to make it invisible to the viewers on the broadcasting interface through which the video content is transmitted.

3) By adding blind watermark detection means to detect invisible identifiers, the efficiency of illegal content extraction was improved.

4) By creating an identifier insertion pattern based on the content of the video content and inserting the identifier based on this, it prevents traffic overrun while enabling content protection through the identifier, and at the same time,

5) Based on the content of the video content, null data can be inserted and transmitted when transmitting video content, thereby enhancing the security of the video and providing the effect of stably transmitting the video at the same time.

1 is a conceptual diagram showing a schematic configuration of the system of the present invention.
2 is a block diagram showing the overall configuration of the system of the present invention.
3 is a conceptual diagram showing an example of a broadcast interface of the present invention.
4 is a conceptual diagram showing an example of a start frame and a subordinate frame belonging to a subgroup of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and the same reference numerals in each drawing refer to the same components.

1 is a conceptual diagram showing a schematic configuration of the system of the present invention.

Referring to FIG. 1, the real-time video content protection system of the present invention is basically a content provider (1), a central control server (2), a viewer (5), a bot (3), an illegal content distributor ( It consists of 4).

The content provider 1 is a provider that provides real-time video content according to the present invention, and can be said to be a subject providing the content. Accordingly, it may be a person in charge of photographing video content, and performs a function of photographing video content in real time or transmitting the video content to the broadcast interface 100 and transmitting it to viewers while in possession of the video content.

The viewer 5 is a subject who accesses the broadcast interface 100 to view the video content transmitted in real time, and accesses the web page address or application of the broadcast interface 100 by holding a smartphone or a PC, etc. Plays the role of appreciating video content.

The illegal content distributor 4 may be, for example, a part of the viewers 5, and is a subject that redistributes or retransmits video content transmitted in real time without permission. In other words, it is a subject who infringes the copyright of the video content by illegally re-uploading the video file recorded on the screen of the video content transmitted in real time and then illegally re-uploading it to online media such as SNS, internet community, and video platform.

Bot (3) is an abbreviation for robot and is a software tool that finds data. It acts as an agent that visits Internet web sites and retrieves, stores, and manages requested information. In other words, it refers to a program that acts as a user or another program, or as a proxy that mimics the behavior of a person. The most common bots on the Internet are programs called spiders and crawlers, which periodically visit websites and collect content for indexing by search engines.

The central control server 2 basically manages the broadcast interface 100 that receives the video content and transmits it to the viewer 5, becomes the subject of inserting an identifier into the video frame included in the video content, and at the same time, a bot ( It manages 3) and extracts illegal content that redistributes video content without permission through bots.

Such a central control server 2 is a program that can be executed in the central processing unit, that is, software is installed on a hardware basis equipped with a central processing unit (CPU), a memory and a hard disk, and wireless communication means such as wired and Bluetooth. Based on this software, functions of detailed modules to be described later can be implemented.

That is, the modules described in connection with the embodiment of the present invention may be implemented directly in hardware or may be implemented based on software executed by hardware. Components of the present invention may be implemented as a program (or application) and stored in a medium in order to be executed by being combined with a computer that is hardware. The components of the present invention can be implemented as software programming or software components.

In addition, the central control server 2 may include a RAM, a ROM, and a processor for temporarily and/or permanently storing signals (or data) processed inside. Here, the processor may include one or more cores, a graphic processing unit, and/or a connection path for transmitting and receiving signals to and from other components.

Hereinafter, a detailed configuration of the system of the present invention will be described based on such a macroscopic configuration.

2 is a block diagram showing the overall configuration of the system of the present invention, and FIG. 3 is a conceptual diagram showing an example of a broadcast interface of the present invention.

2 and 3, the real-time video content protection system of the present invention includes a broadcasting interface 100, an identifier insertion module 200, a content detection module 300, and a message providing module 400. It characterized in that it includes as.

The broadcast interface 100 receives real-time video content and transmits it to the viewer 5 in real time. At this time, the real-time video content is basically transmitted from the content provider 1, and thus, the real-time video content received from the content provider 1 is transmitted to the viewer 5 in real time.

This broadcast interface 100 is similar to a conventional interface for real-time video streaming, and platforms such as YouTube live streaming, Instagram live broadcast, Africa TV, and Twitch that transmit video content to viewers 5 in real time. And its function can be said to be similar. Therefore, with a screen on which real-time video content is displayed on one side, the viewers 5 access the website address of the broadcasting interface 100, and the viewers 5 It is configured to allow viewing and real-time chat.

The identifier insertion module 200 inserts an identifier to inform each frame belonging to the video content transmitted through the broadcast interface 100, that is, a video frame, which can be referred to as a video frame, that the content is copyright protected content. Performs the function of At this time, the identifier may be a well-known watermark, and this identifier is exposed to the outside in a display form so that the identifier can be visually identified on the broadcast interface 100 so that the viewer 5 indicates that the identifier is inserted in the corresponding video content. It may be known, or an invisible identifier may be inserted in the field of view, such as a blind watermark or a watermark concealment technique. In the identifier insertion module 200, a watermark concealment technique is preferably applied, which will be described later.

The content detection module 300 performs a function of extracting illegal content that has been illegally retransmitted or re-distributed to viewers 5 through a plurality of bots (3). It includes a search execution unit 310 and an identifier detection unit 320.

The search execution unit 310 performs a keyword search on a plurality of online media via a plurality of bots 3, thereby reproducing the real-time video content transmitted in real time from the broadcasting interface 100 of the present invention without permission. It performs the function of extracting illegal content that has been distributed, redistributed, or retransmitted.

Here, the term bot (3) is assigned to online media such as blogs, social media, and video streaming sites, and posts generated through the search by visiting the web pages of the online media and performing keyword search for video content. It performs the function of collecting files as illegal contents. This is related to the search and collection function through the known bot (3), so a detailed description thereof will be omitted.

In this case, the keyword refers to a search keyword for searching for corresponding real-time video content. For example, taking a live concert of BTS as an example, keywords such as'BTS','BTS Concert','Bang Bang Con','Concert','Bangtan','Bangtan Con','Bang. Tan' can be keywords. In addition, a word similar to the corresponding keywords, or a form in which a punctuation mark such as a dot or a comma is inserted between the corresponding keyword words may also be a keyword. Therefore, there is no limit to the setting conditions, methods, or number of keywords, and the number and type of keywords can be set by the system administrator, or the bot itself creates keywords related to the video content and performs a search. It is possible.

The identifier detection unit 320 detects an identifier inserted in the real-time video content of the present invention from an uploaded image uploaded to an online medium such as a website, community, SNS, and video platform as described above, and the uploaded image in which the identifier is detected. It performs a function of extracting files as illegal content.

At this time, the collection of uploaded images through the online media may be performed through the bot 3 described above, and the bot 3 visits the online media to collect the uploaded images and viewed from the uploaded image. When the identifier inserted through the identifier insertion module 200 of the present invention is detected in reverse, the content for which the identifier is detected, that is, video content, is regarded as redistribution and extracted as illegal content. At this time, there is no limitation on the method of detecting the identifier, and a detailed method of detecting the identifier of the present invention will be described later.

As the illegal content is detected (extracted), the message providing module 400 provides a message to the original content of the illegal content, that is, the content provider 1 who transmitted the real-time video content of the present invention or the distributor who illegally distributed the illegal content. Performs the function of

In this case, when illegal content is detected, a notification message may be provided to the content provider 1, and a warning message is provided to the distributor who distributed the illegal content. In the case of a notification message, a notification message such as'the video content was illegally distributed by OOO' may be sent as a text message via e-mail or mobile phone, or'OOO content was illegally distributed' to a distributor who distributed illegal content. It is possible to send a warning message that informs the distributor of the distribution of the illegal content, such as'It has been done.' In addition, since there is no limit on the message content or length of the notification message and warning message, the system administrator can set the notification message and warning message and provide it to the content provider 1 and the illegal content distributor 4, respectively.

In addition, when the configuration of the identifier insertion module 200 is further described, the identifier insertion module 200 is a configuration in which an identifier visible or invisible to the naked eye is inserted into real-time video content as described above. At this time, preferably, the identifier may be blinded and detected in a state that is invisible to the eye. For this purpose, the identifier insertion module 200 is a detailed configuration of a positioning unit 210, a quantization performing unit 220, and an identifier insertion. It may further include a unit 230.

The positioning unit 210 performs a function of determining position information of an insertion block into which an identifier is to be inserted in an image frame constituting image content. In this case, the insertion block refers to a space in which an identifier is inserted, and by designating the position information of the insertion block into which the identifier is inserted, the identifier of the insertion block of the corresponding position information is prepared to be inserted.

The quantization unit 220 performs quantization on an insertion block included in an image frame, which can be referred to as a space in which an identifier is to be inserted. This may refer to conventional block unit quantization, and at this time, there is no restriction on the quantization level or quantization coefficient required for quantization. Further, the quantization performing unit 220 may preferably include a transform processing part 221 and a quantization part 222.

The transform processing part 221 performs a function of performing a discrete cosine transform on an insertion block, which may be referred to as a conventional DCT configuration. At this time, the corresponding insertion block is Huffman coded through cosine transformation. Preferably, at this time, the cosine transform may be processed by a two-dimensional cosine transform.

The quantization part 222 may be referred to as a basic configuration of the quantization unit 220, and performs a function of actually performing quantization on the cosine transform-processed insertion block. In this case, since the configuration of the quantization performing unit 220 described above may be referred to for a method of performing quantization, detailed descriptions will be omitted.

The identifier insertion unit 230 inserts a pre-generated identifier into the quantized insertion block, and in this case, the identifier may be a mark of a company configuring the broadcasting interface 100, a company mark of a content provider, or a separate code. . Therefore, there is no restriction on the type of the identifier, and in general, the identifier may be in the form of an electronic watermark. Accordingly, by inserting an identifier in the form of an electronic watermark into the quantized insertion block, it is possible to conceal the identifier. In addition, after the identifier is inserted, the reverse two-dimensional cosine transform is performed again, so that the identifier can be more completely hidden.

Furthermore, when the blind watermark or watermark concealment scheme for inserting an identifier is applied, the identifier detector 320 also needs a corresponding configuration. Accordingly, the identifier detection unit 320 may include a frame collection part 321, a division part 322, a conversion part 323, a quantum processing part 324, and a detection part 325.

The frame collection part 321 serves to collect image frames constituting an uploaded image uploaded to an online medium. When an uploaded image is uploaded or retransmitted to an online medium, transmission is performed on a frame-by-frame basis, so that the corresponding image frame can be collected and stored.

The division part 322 performs a function of dividing and processing the collected image frame into a plurality of sub-blocks. At this time, in the case of sub-block division, the image frame is divided into a plurality of sub-blocks so that sub-blocks of the same size can be generated in the same location information as the location information of the insertion block so as to be interlocked with the above-described insertion block.

The transform part 323 performs a function of cosine transform processing of a sub-block at a position corresponding to the position information of the insertion block, among sub-blocks. In this case, the cosine transform process may be a two-dimensional cosine transform process as described above.

The quantum processing part 324 quantizes the sub-block on which the cosine transform has been performed. In this case, the quantization coefficient or the quantization level is not limited to the same, but the quantization is preferably performed with the same quantization coefficient or level as the quantization performing unit 220 described above.

The detection part 325 detects the identifier from the quantized sub-block, which detects the existence of the identifier through the comparison process between the quantized sub-block and the above-described identifier, and at this time, the sub-block and the identifier are determined in bit units. It is possible to detect the identifier according to the similarity level by comparing it with.

Therefore, when the identifier is detected in this way, the uploaded image is regarded as illegal content that has illegally re-distributed real-time video content and can be extracted and processed.

In addition, the system of the present invention may further include a pattern generation module 500 that generates pattern information into which an identifier is inserted. In this case, the pattern information generation method is not limited, but preferably, based on broadcast data of video content. Pattern information can be created. The pattern generation module 500 may basically include a broadcast data input unit 510, a group classification unit 520, and an identifier pattern generation unit 530.

The broadcast data input unit 510 performs a function of receiving broadcast data for video content from a content producer who has produced real-time video content according to the present invention. At this time, the content producer may be a planner, a PD, or a director of the corresponding real-time video content, and the broadcast material may be a cue sheet, a script, a screenplay, etc. as a material containing the content and content development order of the real-time video content.

The group classification unit 520 performs a function of grouping video frames belonging to video content into a plurality of content groups based on the received broadcast data. This is a video frame that composes the video content based on the content according to the time order of the video content or the change of the cast, as it is possible to know the order of the content development of the video content or the appearance order of the cast based on the content of the broadcast material. Is to classify the content into a plurality of content groups. For example, if a specific real-time video content is a content in which 10 cast members appear sequentially and perform a performance, the content group may also be 10. There are no restrictions on the number of content groups and the size of each.

The identifier pattern generation unit 530 performs a function of generating pattern information of an identifier to be inserted for each content group. In this case, the pattern information refers to how many frames of the image frames constituting each content group are inserted with the identifier. , It is to decide what happens to the insertion period of the identifier, etc.

For example, in the case of a content group corresponding to content that is expected to have a lot of traffic, if too many identifiers are inserted, there may be a problem that the transmission speed may be slowed down. It is also possible to generate pattern information for identifier insertion in a reduced manner. The reverse case is also possible, and accordingly, there is no restriction on the method of generating pattern information.

When the pattern generation module 500 is included as described above, the above-described identifier insertion module 200 inserts and processes an identifier in an image frame based on the pattern information generated for each content group, thereby exceeding traffic or reducing the transmission speed, and stopping the server. You can avoid situations such as,

In addition, the system of the present invention may pattern and insert null data into an image frame belonging to the image content when real-time image content is transmitted based on broadcast data that can be input to the content creator in the above-described configuration. have. To this end, the system of the present invention may further include a null data insertion module 600, and the null data insertion module 600 may include a data pattern generation unit 610 and a data insertion unit 620. .

The data pattern generation unit 610 performs a function of generating pattern insertion information of null data to be inserted into video content based on the content of the broadcast material. In this case, null data means null, that is, nothing. In a programming language, null in a programming language means data that has no value according to the type of language. In more detail, a null character, that is, a null character can be cited as an example of null data. The null character is an ASCII character with a value of 0, and is mainly used as a terminator or separator. . In SQL, null is used as a special keyword or special marker to indicate that it has no value. In other words, it means empty data with no content. Or, an empty frame with nothing can be null data.

In addition, such a data pattern of null data refers to a data pattern in which information on how many null data is inserted in a period of a number of video frames included in the video content and how many null data are inserted in each period.

The data insertion unit 620 serves to insert null data into image content according to the generated data pattern. That is, the null data is inserted into the image content according to the content of the data pattern, that is, the position where the null data is to be inserted among the image frames belonging to the image content, the insertion period of the null data, and the number of insertions per period.

4 is a conceptual diagram illustrating an example of a start frame and a subordinate frame belonging to a subgroup of the present invention.

Referring to FIG. 4, the data pattern generation unit 610 is a detailed configuration, such as a detailed group generation part 611, a location determination part 612, a pattern generation part 613, an expected traffic calculation part 614, and transmission. A numerical recognition part 615, a peak calculation part 616, a change rate calculation part 617, a correction numerical value calculation part 618, and a correction pattern calculation part 619 may be included.

The detailed group generation part 611 groups image frames belonging to a content group in which image frames belonging to image content are primarily grouped into an infra frame and a predicted frame subordinate to the initiation frame, Performs the function of creating a subgroup.

Preferably, all the video frames belonging to the content group are separated and considered, but the video frame at which the corresponding period starts is designated (coded) as the starting frame by dividing the entire video frame constituting it into a certain period, and based on any one starting frame. Thus, all the remaining image frames located before the start frame of the next period are subdivided into subordinate frames. Then, the classified subordinate frames are subordinated to the start frame, and this is formed into one subgroup. Through this, the image frames constituting the content group can be further grouped into a plurality of sub-groups.

At this time, since there is no limit to the number of image frames forming one subgroup, the number of image frames constituting the subgroup may be set by the system administrator of the present invention.

The location finding part 612 grasps the location information of infrastructure data, which can be regarded as a representative frame of the subgroup, for each classified subgroup. In other words, it is to grasp the location information of the starting frame having representativeness in the image frames constituting one sub-group.

The pattern generation part 613 can be referred to as the basic configuration of the above-described data pattern generation unit 610, and, as described above, based on the contents of broadcast data such as cue sheets, scripts, and scripts, data patterns for each sub-group are generated. Each performs the function of creating. Therefore, based on the content of the broadcast data, the number of traffic expected for the content group is calculated, and further, data patterns are generated for each detailed group that is grouped in detail within the content group. It is to generate information on how many null data is inserted in each video frame cycle.

In addition, when the location information of the start frame of the subgroup is identified as described above, the data insertion unit 620 inserts null data for each location information of the start frame constituting the subgroup according to the data pattern generated for each subgroup.

In addition, the predicted traffic calculation part 614 performs a function of calculating the predicted traffic calculated based on the number of viewers (5) expected when the video frames belonging to the sub-group are transmitted for each sub-group based on the contents of the broadcast data. do.

At this time, traffic is a computer term taken from the dictionary meaning and means the amount of data transmitted by the server, and therefore, predicted traffic means that the number of viewers (5) increases or decreases as the video frame of the corresponding content is transmitted in real time. Expected traffic is calculated based on (an attempt to access the server of the broadcast interface 100 from the outside). At this time, preferably, the unit of traffic may be MB, GB, or TB, and preferably GB.

The transmission number identification part 615 performs a function of grasping the transmission rate of the video content being transmitted in real time, that is, the number of viewers 5 connected to the broadcasting interface 100 in real time. . At this time, the transmission rate (transmission rate) is generally in Mbps, and the number of viewers 5 is the number of users who are actually attempting to connect to the broadcast interface 100 server.

Further, the peak calculation part 616 performs a function of calculating a transmission rate out of a preset reference range as a peak value, and this is described in detail, from the transmission rate detected for the video content being transmitted and transmitted in real time. It performs a function of calculating the transmission speed out of the reference range as a peak value. At this time, the reference range may be set by the system administrator of the present invention or may be set by the system itself, and there is no limitation on the method of setting the reference range or the range of the reference range.

The rate of change calculation part 617 analyzes the transmission signal for which the corresponding peak value is calculated, and determines the rate of change of the transmission speed based on the period of the wavelength of the transmission signal.

In general, uploading and downloading of image content means that an electronic signal is transmitted, so that the electronic signal processes a wavelength band. At this time, it detects the peak value at the corresponding wavelength and analyzes the wavelength to find out how the transmission speed fluctuates in real time according to the occurrence of the peak value.
The correction value calculation part 618 calculates a correction value for a data pattern based on the calculated predicted traffic and transmission speed, the number of viewers 5, and a rate of change of the transmission speed. In this case, there is no separate limitation on the method of calculating the correction value.
The correction pattern calculation part 619 performs a function of calculating a correction pattern obtained by correcting a data pattern based on a correction value. In this case, preferably, the higher the correction value, the more the data pattern is corrected. In other words, the period in which null data is inserted may vary, and the number of inserted null data may vary significantly. If the correction value is low, the correction pattern can be maintained similarly to the existing data pattern. At this time, the correction of the data pattern may be performed automatically, or the system administrator may directly check the correction value and calculate a correction pattern obtained by correcting the data pattern based on the correction value.

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As described so far, the configuration and operation of the real-time video content protection system according to the present invention are expressed in the above description and drawings, but these are only described as examples, and the spirit of the present invention is not limited to the above description and drawings. It goes without saying that various changes and changes are possible within the scope of the technical idea of the invention.

1: Content provider 2: Central control server
3: bot 4: illegal content distributor
100: broadcasting interface 200: identifier insertion module
210: positioning unit 220: quantization performing unit
221: transformation processing part 222: quantization part
230: identifier insertion unit 300: content detection module
310: search execution unit 320: identifier detection unit
321: Frame collection part 322: Split part
323: transform part 324: quantum processing part
325: detection part 400: message providing module
500: pattern generation module 510: broadcast data input unit
520: group classification unit 530: identifier pattern generation unit
600: null data insertion module 610: data pattern generation unit
611: subgroup creation part 612: location identification part
613: Pattern generation part 614: Expected traffic calculation part
615: Transmission value identification part 616: Peak calculation part
617: change rate calculation part 618: correction value calculation part
619: correction pattern calculation part 620: data insertion unit

Claims (10)

As a real-time video content protection system,
A broadcasting interface for receiving real-time video content from a content provider and transmitting it to a viewer in real time;
An identifier insertion module for inserting an identifier into an image frame of the transmitted image content;
A search execution unit that extracts illegal content by performing keyword search for the video content on a plurality of online media through a plurality of bots, and illegal content by detecting the identifier from the uploaded images uploaded to the online media. A content detection module including an identifier detection unit for extracting a content;
A message providing module that provides a notification message to the content provider or a warning message to a distributor who has distributed the illegal content according to whether the illegal content is extracted;
A broadcast data input unit for receiving broadcast data for the video content from a content producer; a group classifier for classifying video frames belonging to the video content into a plurality of content groups based on the broadcast material; and the identifier for each content group Including; a pattern generation module including an identifier pattern generation unit for generating pattern information for,
The identifier insertion module,
Inserting the identifier into the video frame based on the pattern information generated for each content group,
The system,
A null data insertion module comprising a data pattern generator for generating a data pattern of null data to be inserted into the video content based on the broadcast data, and a data insertion part for inserting the null data into the video content according to the data pattern Includes ;,
The data pattern generation unit,
A subgroup creation part for generating a plurality of subgroups by grouping the video frames belonging to the content group into a start frame and a subordinate frame subordinate to the start frame, and location identification to identify the location information of the start frame for each subgroup A part and a pattern generation part for generating a data pattern for each sub-group based on the broadcast material,
The data insertion unit,
Inserting the null data for each location information of the start frame according to the data pattern for each sub-group,
The data pattern generation unit,
An expected traffic calculation part that calculates the expected traffic of a subgroup based on the contents of the broadcast data, a transmission value identification part that identifies the transmission rate of the video content transmitted for transmission and the number of viewers, and a preset criterion A peak calculation part that calculates the transmission speed out of the range as a peak value, a change rate calculation part that identifies the rate of change of the transmission speed based on the period of the wavelength of the transmission signal at which the peak value appears, and the expected traffic and the transmission And a correction value calculation part for calculating a correction value based on the speed, the number of viewers and the rate of change, and a correction pattern calculation part for calculating a correction pattern correcting the data pattern based on the correction value. That, video content protection system. The method of claim 1,
The identifier insertion module,
A positioning unit that determines position information of an insertion block into which an identifier is to be inserted in the video frame,
A quantization performing unit that performs quantization on the insertion block,
And an identifier inserting unit for inserting an identifier into the quantized insert block. The method of claim 2,
The quantization performing unit,
A transformation processing part that processes the insertion block into a Cosine Transform, and
And a quantization part that performs quantization on the transform-processed insertion block. The method of claim 2,
The identifier detection unit,
A frame collection part for collecting image frames included in the uploaded image, and
A division part for dividing the video frame into a plurality of sub-blocks,
A transform part that performs cosine transform on the sub-block corresponding to the location information of the insertion block, and
A quantum processing part that quantizes the sub-block on which the cosine transform has been performed,
And a detection part for detecting the identifier in the quantized sub-block. delete delete delete delete delete delete

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