KR100930077B1 - Watermark Tracking System for Digital Rights Management - Google Patents

Abstract

A watermark tracking system for digital rights management is provided. According to an embodiment of the present invention, a watermark tracking system for digital rights management includes: a watermark tracking system for digital rights management; A first database for recording and storing user access information data including referer URI (recent access site) information about a specific web site as a primary search list through the search robot; And a second database for collecting and storing the image address and the link address information of the digital copyright information extracted through the search robot through the search robot as a secondary search list. And recording information indicating whether a watermark exists in addition to the primary and secondary search lists associated with the specific web site according to a result of checking whether the watermark exists for digital copyright data of the specific web site.

Description

Watermark tracking system for digital rights management {Tracing system for management of digital rights}

The present invention relates to a watermark tracking system for digital rights management, and more particularly, to search and track a watermark for a specific web site through a two-stage search using a search robot. The present invention relates to a watermark tracking system for digital rights management to improve the probability of detection of infringement.

With the development of the Internet, the sharing and distribution of files among individuals and between individuals and businesses has become commonplace. As the file sharing and distribution of the Internet has developed, various multimedia services have been provided on a network.

Moreover, with the continuous improvement of network transmission speed and information quality, it has become possible for computers and communication services to replace conventional analog broadcasting services and paper-printed newspapers. In particular, with the spread of MP3 players, digital cameras, and video that can be attached to computers, the era of high-quality information service through the Internet has come, and the changes have led to multimedia in cyberspace through electronic commerce. Product trading has been active.

However, digital works have many problems in copyright protection due to their characteristics. In open spaces such as the Internet where information can be easily stored or transformed, a large amount of copying can be performed without any restrictions, and after copying, not only the same data information as the original can be maintained but also distributed without permission of the author, thus protecting the copyright of the author. Difficult to do

This problem of copyright infringement is becoming more serious and many legal, institutional and technical solutions have been devised.

The representative method is to encrypt the data so that only a specific user can use the information, or to hide the copyright information in the data and deliver it to the user so that the data is not externally modified. And a digital watermarking method.

Among them, watermarking is a copyright protection method for digital data, especially image data, and may be referred to as a copyright display and verification technique for digital content. By concealing copyright information into the data and re-detecting hidden copyright information, it is a way to detect the alteration and forgery of the data and claim the author's ownership.

In this watermark embedding method, a spatial method, which is a method of adding a small change to data such as a pixel value of a screen and using it as a watermark, converts data in a digital form into an analog signal having a frequency component and converts the same. A method of transforming and inserting a watermark by using a frequency domain method using a discrete cosine transform (DCT), a fast Fourier transform (FFT), or a wavelet transform. ).

 However, the tracking of copyright infringement of such watermarked digital works is made through random selection of arbitrary sites with a limited number of administrators, which not only decreases efficiency but also greatly reduces the utility of enforcement. There is a problem such as.

Therefore, there is a demand for a method for providing an improved copyright protection function of digital works by efficient watermark search and tracking of digital works based on more reasonable criteria.

The technical problem to be achieved by the present invention is to provide a digital search that can improve the probability of detection of infringement on a digital work by enabling the search and tracking of a watermark for a specific website through a two-stage search using a search robot. It is to provide a watermark tracking system for copyright management.

The objects of the present invention are not limited to the above-mentioned objects, and other objects which are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a watermark tracking system for digital rights management according to an embodiment of the present invention, Watermark tracking system for digital rights management, Search robot; A first database for recording and storing user access information data including referer URI (recent access site) information about a specific web site as a primary search list through the search robot; And a second database for collecting and storing the image address and the link address information of the digital copyright information extracted through the search robot through the search robot as a secondary search list. And recording information indicating whether a watermark exists in addition to the primary and secondary search lists associated with the specific web site according to a result of checking whether the watermark exists for digital copyright data of the specific web site.

Here, the user access information data may include counter log information in each web site, current or previous access site information, and access time information.

Further, the watermark search for the web site may be performed by searching by file name according to a prescribed priority of a plurality of digital works, and may be performed by a batch method in real time or by a prescribed time interval. It is good.

According to the watermark tracking system for digital copyright management of the present invention as described above, it is possible to search and track the watermark through a double search through the analysis of the user access information data for the web site.

Accordingly, it is possible to more closely search the digital copyrighted work on the web site where frequent access is made by a plurality of users, thereby improving the probability of detecting copyright infringement of the digital copyrighted work.

In addition, it is possible to perform a search by file name according to a priority based on a predetermined criterion for a plurality of digital works, and thus, there is an additional advantage that more efficient digital work can be searched and tracked.

In order to achieve the above object, a watermark tracking system for digital rights management according to an embodiment of the present invention, Watermark tracking system for digital rights management, Search robot; A first database for recording and storing user access information data including referrer URI information about a specific web site through the search robot; And a second database for collecting and storing the digital copyright information using the specific web site information and the referrer URI information of the user through the search robot, wherein the search robot comprises digital copyright data of the specific web site. And a result of checking whether a watermark exists for the first database and the second database, respectively.

Here, the user access information data may include counter log information in each web site, current or previous access site information, and access time information.

Further, the watermark search for the web site may be performed by searching by file name according to a prescribed priority of a plurality of digital works, and may be performed by a batch method in real time or by a prescribed time interval. It is good.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms, and the present embodiments are merely provided to make the disclosure of the present invention complete and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, the invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an explanatory diagram schematically showing the configuration of a watermark tracking system for digital rights management according to an embodiment of the present invention.

As shown in FIG. 1, a watermark tracking system for digital rights management according to an embodiment of the present invention includes a search robot 110, a first database 130, a second database 140, and the like. It is composed.

The search robot 110 visits the web site 120 to improve the effectiveness of the search, and analyzes log information, IP address, referrer URI, visit time information, etc. left by the user 150 and the first search list. And store the information in the first database 130, and then precisely search the web site based on the contents stored in the first database 130 to extract information such as an image address and a link address for digital copyright information. Create a secondary search list and store it in the second database 140.

Based on the list searched in step 2, all digital copyright information such as an image existing on the web site is called to check whether there is a watermark. Write each one.
The result of checking the presence or absence of such a watermark is indicated in the first and second databases 130 and 140 as follows.
The watermark of the web site of the search robot 110 exists in the primary search list recorded in the first database 130 by analyzing the user log information, IP address, wrapper URI, visit time information, etc., left after visiting the web site. Information indicating whether a watermark is present is additionally displayed according to the result of the inspection.
The second database 140 displays information indicating whether a watermark exists in addition to the secondary search list in which an image address including a watermark extracted by a precise search of a web site, link address information, and the like are recorded.

The log file of the web site 120 includes various information such as an access IP address, an access time, a downloaded file name, a web browser version information, an error code, an access path, a user operating system, etc. of a user who visits the site.

Analyzing these log files allows you to reprocess the information as download frequency or internal links to the host, links to other hosts, refresh rates, and more. It can be determined within the minimum range, and in the case of a link going out to another site (host), the host information can be registered in the database 130 so that a watermark tracking robot system can be operated like the existing site. have.

In this way, the primary list retrieved based on the log information and database information is regarded as a potential illegal file distribution site, and all pages in the host are carefully examined.

In case of overhauling, read the web page, parse the HTML, separate it into link tag and image tag, add the URL corresponding to the link tag to the secondary search list, and download the URL corresponding to the image tag. By using such a method, it is possible to determine whether to share illegal image files through copyright protection methods such as inserted Exif tag information, logos, and watermarks to determine whether they fall under the copyright protection target.

Sites with the possibility of distributing illegal image files extracted in two stages are managed in the databases 130 and 140 so that a more complete result can be extracted by classifying or linking the results that can satisfy the required information at any time. Information inside the 130 and 140 may be updated every time the search robot 110 operates to maintain the latest information.

In this case, the user access information data for the web site 120 analyzed by the search robot 110 may include counter log information, current access site information, or previous access URI in each web site. Information, access time information, and the like. However, it is obvious that the present invention is not limited thereto.

In addition, the watermark tracking system for digital rights management according to an embodiment of the present invention, in order to reduce the time required for more efficient watermark search, tracking, etc., separate criteria for a plurality of digital assets to be searched It may be configured to search by file name according to the priority provided by the.

In other words, digital watermarks are inserted by assigning weights according to a predetermined criterion for digital works that are the current issue (such as the latest release movie) or works requiring more stringent protection, and preferentially searching for the corresponding file. The efficiency of searching and tracking the copyrighted work can be further improved.

In this case, the watermark search operation for the plurality of web sites 130 may be performed in real time, but periodically, in a batch manner according to the analysis result of the log information collected for each prescribed time interval unit. It has been described above that it may be performed by.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive.

1 is an explanatory diagram schematically showing a configuration of a watermark tracking system for digital rights management according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

110: search robot 120: Web site

130: first database 140: second database

150: user

Claims (4)

In the watermark tracking system for digital rights management, Search robot; A first database for recording and storing user access information data including referer URI (recent access site) information about a specific web site as a primary search list through the search robot; And And a second database for collecting and storing the image address and the link address information of the digital copyright information extracted by precise search of the specific web site through the search robot as a secondary search list. The search robot records information indicating whether a watermark exists in addition to the primary and secondary search lists associated with the specific web site according to a watermark existence test result of the digital copyright data of the specific web site. Features watermark tracking system for digital rights management. The method of claim 1, The user access information data includes counter log information in each web site, current or previous access site information, visit time information, and access time information. system. The method according to claim 1 or 2, The watermark retrieval for the web site is a watermark tracking system for digital rights management, characterized in that the retrieval by file name according to a prescribed priority for a plurality of digital works. The method of claim 3, wherein The watermark retrieval system for digital rights management, characterized in that the performance of the watermark search for the web site is performed by a batch method in real time or at prescribed time intervals.

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