KR101023805B1 - Method and apparatus for protecting digital contents by using file I/O information - Google Patents

Method and apparatus for protecting digital contents by using file I/O information Download PDF

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Publication number
KR101023805B1
KR101023805B1 KR1020080101046A KR20080101046A KR101023805B1 KR 101023805 B1 KR101023805 B1 KR 101023805B1 KR 1020080101046 A KR1020080101046 A KR 1020080101046A KR 20080101046 A KR20080101046 A KR 20080101046A KR 101023805 B1 KR101023805 B1 KR 101023805B1
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KR
South Korea
Prior art keywords
digital content
file
information
output information
file input
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KR1020080101046A
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Korean (ko)
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KR20100041972A (en
Inventor
김정은
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(주)씨디네트웍스
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Priority to KR1020080101046A priority Critical patent/KR101023805B1/en
Publication of KR20100041972A publication Critical patent/KR20100041972A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/50Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
    • G06F21/55Detecting local intrusion or implementing counter-measures
    • G06F21/552Detecting local intrusion or implementing counter-measures involving long-term monitoring or reporting

Abstract

Disclosed are a method and apparatus for protecting digital content using file input / output information. According to an exemplary embodiment of the present invention, the file input / output information is monitored and the monitored file input / output information is determined to correspond to a preset criterion, and when the file input / output information corresponds to a preset criterion, reproduction of the digital content is blocked. .
According to the present invention, there is an advantage that can effectively protect digital content.
Digital, Content, File, I / O I / O

Description

Method and apparatus for protecting digital contents using file input / output information {Method and apparatus for protecting digital contents by using file I / O information}

The present invention relates to a method and apparatus for protecting digital content using file input / output information. More particularly, the present invention relates to a digital content protection method using an input / output information of a digital content file. A method and apparatus for protecting content are provided.

The development of communication technologies such as the Internet and the development of digital devices such as computers have made it possible to acquire and store various digital contents.

However, due to the nature of digital content that is easy to store, transmit and copy, there are many cases where digital content is used or copied without legitimate rights. Therefore, a method for effectively protecting digital content is required.

In order to solve the conventional problems as described above, the present invention proposes a method and apparatus for protecting digital content using file input / output information for effectively protecting digital content.

Still other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention there is provided a digital content protection method using the file input and output information.

According to a preferred embodiment of the present invention, a method of protecting digital contents, the method comprising: monitoring file input / output information (a); Determining whether the monitored file input / output information corresponds to a preset criterion (b); And (c) blocking the reproduction of the digital content when the file input / output information corresponds to a preset criterion.

In the step (b), the preset criterion may be information including at least one of generating a preset type of file and increasing a file size of the preset type.

Step (b) may be performed at the server for transmitting the digital content.

In this case, step (c) may be performed by stopping the transmission of the digital content in the server.

In addition, step (c) may be performed by transmitting a signal for the server to stop the playback of the digital content.

Reading information included in a header of the file when the file input / output information corresponds to a preset criterion in step (c); And comparing the read information with the digital content information. If the read information matches the digital content information, the reproduction of the digital content may be blocked.

According to another aspect of the present invention, an apparatus for protecting digital content using file input / output information is provided.

According to a preferred embodiment of the present invention, a device for protecting digital contents, comprising: a file input / output monitoring unit for monitoring file input / output information; A monitoring information comparing unit to determine whether the monitored file input / output information corresponds to a preset criterion; And a content reproduction blocker that blocks the reproduction of the digital content when the file input / output information corresponds to a preset criterion.

The preset criterion of the monitoring information comparison unit may be information including at least one of generating a file of a preset type and increasing a file size of a preset type.

The monitoring information comparison unit may be included in a server transmitting the digital content to determine whether the file input / output information corresponds to a preset criterion.

The content reproduction blocking unit may be included in the server, and the server may block the reproduction of the digital content by stopping the transmission of the digital content.

In addition, the content reproduction blocking unit may block the reproduction of the digital content by transmitting a signal to stop the reproduction of the digital content.

The digital content protection device may further include a file header information reading unit that reads information included in a header of a file, and the monitoring information comparing unit is configured to read the file header information reading unit when the file input / output information corresponds to a preset criterion. The read information may be compared with the digital content information, and the content reproduction blocking unit may block the reproduction of the digital content when the read information coincides with the digital content information.

According to another aspect of the present invention, there is provided a recording medium recording a program for implementing a digital content protection method using the file input and output information.

According to a preferred embodiment of the present invention, a program of instructions that can be executed by a digital processing apparatus is implemented so that a method of protecting digital contents is implemented and the program can be read by the digital processing apparatus. A recording medium, comprising the steps of: monitoring file input / output information (a); Determining whether the monitored file input / output information corresponds to a preset criterion (b); And (c) blocking the reproduction of the digital content if the file input / output information corresponds to a preset criterion. The recording medium is provided with a program for implementing the digital content protection method.

In the step (b), the preset criterion may be information including at least one of generating a preset type of file and increasing a file size of the preset type.

Step (b) may be performed at the server for transmitting the digital content.

In this case, step (c) may be performed by stopping the transmission of the digital content in the server.

In addition, step (c) may be performed by transmitting a signal for the server to stop the playback of the digital content.

Reading information included in a header of the file when the file input / output information corresponds to a preset criterion in step (c); And comparing the read information with the digital content information. If the read information matches the digital content information, the reproduction of the digital content may be blocked.

As described above, the digital content protection method and apparatus using the file input / output information according to the present invention has an advantage of more effectively protecting digital content.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Like reference numerals are used for like elements in describing each drawing. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be denoted by the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted.

First, a configuration of a content delivery system to which a digital content protection method according to an embodiment of the present invention can be applied will be described with reference to FIG. 1.

1 is a block diagram showing the configuration of a digital content transmission system to which the digital content protection method according to an embodiment of the present invention can be applied.

In the following description, for the convenience of description, unless otherwise specified, digital content and content are used as terms representing digital content without distinction.

As shown in FIG. 1, a content delivery system to which a content protection method according to an exemplary embodiment of the present invention may be applied may include a client 100 and a media server 120.

Meanwhile, in FIG. 1, only one component is illustrated for convenience of description, but one or more components may be present.

In addition, FIG. 1 illustrates an example of a content transmission and transmission system when receiving digital content through the communication network 110, and separately stores the digital content in a digital processing device such as the client 100 of FIG. 1 without passing through the communication network 110. It is obvious that the present invention can be applied even when reproducing.

Hereinafter, a description will be given of a content transmission system to which the digital content protection method according to the present invention can be applied when receiving digital content through a communication network.

First, in FIG. 1, the client 100 may be connected through the communication network 110 to access the media server 120 to receive digital content, and may be connected to or via a display screen included in the client 100. It is a device that can play digital content output through the screen of the device.

The client 100 may include a web browser (not shown) that allows access to the media server 120 and an application (not shown) required for playback when the content is played. The application may be installed in the form of a program on the client 100.

The client 100 is not limited as long as it is possible to install a program that can play content, and a device that can include a display screen and / or a speaker that outputs the played content.

As described above, when receiving and playing digital content through the communication network 110, the communication server may include a communication function capable of accessing the media server 120.

The client 100 may be, for example, a wired / wireless terminal such as a personal computer (PC), a mobile phone, a personal digital assistant (PDA), a portable multimedia player (PMP), or the like, but is not limited thereto. .

The client 100 is connected to the media server 120 through the communication network 110, the communication network 110 in the present invention may be various types of communication networks, such as online and mobile communication network, there is no limitation on the type or form of communication network There is no

The media server 120 transmits the digital content to the client 100, and although not shown in FIG. 1, the media server 120 may be connected to a database in which the digital content is stored.

On the other hand, the digital content provided from the media server 120 is downloaded and played as downloaded and played on the client 110 as well as the streaming type digital content played back in real time on the client 110. There is no restriction such as digital content of play).

In particular, in the case of download-and-play digital content, since many cases are applied to the digital rights management (DRM) authentication method for protecting the digital content, the digital content protection method according to the conventional DRM authentication method and the present invention. The protection of digital content by using or applied together may be more useful.

In addition, in the case of the streaming method, the digital content protection method according to the present invention can be further strengthened by using the digital content protection method according to the present invention together with various authentication and protection methods for protecting the conventional streaming content.

Meanwhile, although only the media server 120 is illustrated in FIG. 1, a web server (not shown) for inputting information necessary for authentication to a user through the client 100 and providing a web document providing information on digital content is provided. It will be apparent to those skilled in the art that more may be included.

The digital content protection method according to the present invention in such a content delivery system can be implemented by various methods.

First, the client 100 monitors input / output information of files input or output through the client 100 to obtain file input / output information.

File input / output (I / O) information is information that a file, i.e., a set of records, is input to and output from a storage unit of a digital processing apparatus in a digital processing apparatus such as a computer.

Acquisition of such file input / output information, that is, input / output of a file, may mean that reading or changing of data included in the file has occurred.

In the present invention, in order to take advantage of this point, such file input / output information is monitored and used to protect digital content.

When the file input / output information corresponds to a preset criterion for a file obtained, for example, when a file having a specific extension name is generated or a size of a file having a specific extension name increases, the digital content may be stored or recorded. The digital content may be protected in various ways, such as by blocking the transmission of the digital content or blocking the transmission.

On the other hand, in order to more accurately determine that the digital content is stored or recorded, illegal copying, recording, storage, etc. of the digital content to be read and the header information of the file from which the file input / output information is acquired and protected from the header information It is also possible to determine whether or not.

For example, when a file having an extension of avi, which is a type of a general video file, is generated, generation of a file having an extension of avi may be detected by monitoring file input / output information.

If the generation of a file having such an extension avi is detected while the video file is being provided through the streaming service, the video file may be determined by the client 100 receiving the streaming service, so that the video file may be recorded. It is to stop the transmission or to block the playback of the video file in the client (100).

Further, for example, although a file having an extension of avi, which is a type of a general video file, exists, the size of a specific file having an extension of avi may be detected by monitoring the file input / output information.

If the size of a specific file having an extension of avi is increasing while the video file is being provided through the streaming service, the client 100 receiving the streaming service may determine that the corresponding video file is being recorded. It is to stop the transmission or to block the playback of the video file in the client (100).

Meanwhile, it may be difficult to determine that video data is recorded only by generating a specific file or increasing the size of a specific file from monitoring the file input / output information.

In particular, in the case of the download and play method, since the digital content is stored in the client 100 and then played, the user may perform other operations irrelevant to recording or copying of the digital content while playing the digital content.

In order to solve this problem, for example, when a specific type file is generated or a size of a specific type file is increased, the information is read and protected from the header of the file that is generated or is increasing in size. And comparing the digital content information.

For example, when the client 100 detects that a file having an extension of avi is generated, information included in the header of the file having the extension of avi is read.

If the read information is matched with the digital content information being transmitted or reproduced, the digital content currently being transmitted or reproduced may be determined to be copied, recorded, or stored in the client 100, and in this case, the digital content It is to protect the content in various ways, such as interrupting playback or stopping the transmission of digital content.

Hereinafter, the order in which the digital content protection method is implemented according to an exemplary embodiment of the present invention will be described with reference to FIG. 2.

2 is a flowchart illustrating a procedure of implementing a digital content protection method according to an embodiment of the present invention.

As shown in FIG. 2, the method for protecting digital content according to an exemplary embodiment of the present invention first monitors file input / output information in a digital processing device that reproduces digital content, that is, a device such as the client 100 of FIG. 1 ( S200).

In addition, the controller determines whether the input / output information of the monitored file corresponds to a preset criterion (S202) to block content playback when it corresponds to the preset criterion (S204), and to play the content when it does not correspond to the preset criterion (S206). ).

The preset criterion for determining whether to play the content may be various criteria as described above, and may be information such as generation of a specific type file or increase in size of the specific type file.

In addition, although not shown in FIG. 2, when information corresponding to the preset criteria is read, information included in a header of a corresponding file may be read and compared with digital content information to be protected.

Since the header of a file generally stores the characteristic information of the data such as the size and type of the data and the order of the data in front of the original data of the file, the information of the data stored in the file is read by reading the information contained in the header of the file. It can be seen.

In particular, when reading information included in a file header along with file generation or file size increase, for example, if a video called A is currently being played, the header of the generated file includes information related to the video called A. In this case, it can be determined that the video A is captured, recorded, or saved, and thus, digital content can be protected by various methods such as interrupting playback of the video, interrupting transmission, or blocking recording or capture program.

On the other hand, in order to protect the digital content, it is also possible to read the header information of all the files stored in the digital processing device in which the digital content is reproduced. By obtaining information such as generation or size increase of a specific file from input / output information and reading the header information of the file only for the corresponding file, the digital content can be effectively protected while reducing the load on the digital processing apparatus.

In FIG. 2, although the reproduction of digital content is blocked, when the digital content is transmitted through the communication network 110 through the media server 120, the transmission of the digital content may be blocked.

Meanwhile, the monitoring of the file input / output information is performed by a digital processing apparatus that plays digital content such as the client 100, and whether the input / output information of the file corresponds to a preset criterion is the same as the media server 120 that transmits the digital content. It is also possible to carry out in a separate device.

3 is a flowchart illustrating a procedure of implementing the digital content protection method according to the present invention when determining whether input / output information of a file corresponds to a preset criterion.

As shown in FIG. 3, first, file input / output information is monitored by the client 100 (S300), and the input / output information of the monitored file is transmitted to the media server 120 (S302).

In operation S304, the media server 130 determines whether the input / output information of the file corresponds to a preset criterion, and transmits the content when the media server 130 does not correspond to the preset criterion (S306). The file content transmitted to the client 100 is reproduced in the client (S308).

On the other hand, if the input and output information of the received file corresponds to a predetermined criterion, and transmits a signal to the client 100 to block the transmission of the content and to indicate that the transmission of the content is impossible (S206).

Although FIG. 3 illustrates that the transmission of the content is blocked, the media server 120 may transmit a signal to the client 100 to stop the content from being played, thereby preventing the content from being played in the client 100. Do.

On the other hand, the digital content protection method according to the present invention may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

Hereinafter, a configuration of an apparatus capable of implementing the digital content protection method according to the present invention will be described with reference to FIG. 4.

4 is a block diagram showing the configuration of a content protection module that can be installed in the client 100 to implement the digital content protection method according to an embodiment of the present invention.

On the other hand, such a content protection module is installed in the form of a program in the client 100 can be implemented as a device or may be configured as a separate device.

As illustrated in FIG. 4, the content protection module according to the present invention may include a file I / O monitoring unit 400, a monitoring information comparing unit 410, and a content reproduction blocking unit 420.

The file I / O monitoring unit 400 monitors file input / output information of a digital processing apparatus that reproduces digital content.

The monitoring information comparison unit 410 compares the input / output information of the file monitored by the file I / O monitoring unit 400 to determine whether the file corresponds to a preset criterion.

The preset criterion for determining whether to play the content may be various criteria as described above, and may be information such as generation of a specific type file or increase in size of the specific type file.

The content reproduction blocking unit 420 blocks the content reproduction when the input / output information of the monitored file corresponds to a preset criterion as determined by the monitoring information comparison unit 410.

Blocking of the content can be implemented in various forms such as interruption of the operation of the player program in which the digital content playing the content is played, output of the screen itself of the player program, or output of a blank screen.

On the other hand, as described above, blocking the reproduction of the digital content may be performed by blocking the transmission of the digital content when the digital server transmits the digital content through a communication network.

On the other hand, it is obvious that the function of the content reproduction blocking unit 420 may be included in the control unit of the digital processing device that reproduces the digital content and may be performed by generating a control signal from the control unit.

If the above-described criteria are met and the information included in the header of the file is read and compared with the digital content information to be protected, the content protection module according to the present invention may include a file header. It may further include an information reader (not shown).

The apparatus may further include a storage unit (not shown) in which preset criteria for comparing with the monitored file input / output information may be stored, and the storage unit may be included in the storage unit of the digital processing device where the digital content is reproduced. Is self explanatory.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Additions should be considered to be within the scope of the following claims.

1 is a block diagram showing the configuration of a digital content transmission system that can be applied to the digital content protection method according to an embodiment of the present invention.

2 is a flow chart illustrating the order in which the digital content protection method is implemented in accordance with one preferred embodiment of the present invention.

3 is a flow chart showing the order in which the digital content protection method is implemented in accordance with another preferred embodiment of the present invention.

Figure 4 is a block diagram showing the configuration of a content protection module that can be installed on the client to implement the digital content protection method according to an embodiment of the present invention.

Claims (13)

  1. In the method of protecting digital contents,
    Monitoring file input / output information;
    Determining whether the monitored file input / output information corresponds to a preset criterion;
    Reading information included in a header of the file when the file input / output information corresponds to a preset criterion;
    Comparing the read information with digital content information being reproduced; And
    And blocking the reproduction of the digital content when the read information coincides with the digital content information as a result of the comparison.
  2. The method of claim 1,
    In the determining of whether the monitored file input / output information corresponds to a preset criterion,
    The preset criterion is information including at least one of generating a preset type of file and increasing a file size of the preset type.
  3. The method of claim 1,
    Determining whether the monitored file input and output information corresponds to a preset criterion,
    Digital content protection method, characterized in that performed in the server for transmitting the digital content.
  4. The method of claim 3,
    Blocking the playback of the digital content,
    And stopping the transmission of the digital content in the server.
  5. The method of claim 3,
    Blocking the playback of the digital content,
    And transmitting a signal for the server to stop playing the digital content.
  6. delete
  7. In the protection device of digital contents,
    A file input / output monitoring unit for monitoring file input / output information;
    A monitoring information comparing unit to determine whether the monitored file input / output information corresponds to a preset criterion;
    A file header information reader for reading information included in the header of the file; And
    And a content reproduction blocker configured to block the reproduction of the digital content when the file input / output information corresponds to a preset criterion.
  8. The method of claim 7, wherein
    The preset criterion of the monitoring information comparing unit is information including at least one of generating a file of a preset type and increasing a file size of a preset type.
  9. The method of claim 7, wherein
    The monitoring information comparison unit,
    And included in the server for transmitting the digital content, and determining whether the file input / output information corresponds to a preset criterion.
  10. 10. The method of claim 9,
    The content playback blocker,
    And the server, and stops the transmission of the digital content in the server to block the reproduction of the digital content.
  11. 10. The method of claim 9,
    The content playback blocker,
    And a signal included in the server to transmit a signal for stopping the reproduction of the digital content to the protection device of the digital content, thereby preventing the reproduction of the digital content.
  12. delete
  13. In a recording medium recording a program for implementing a method of protecting digital contents,
    Monitoring file input / output information;
    Determining whether the monitored file input / output information corresponds to a preset criterion;
    Reading information included in a header of the file when the file input / output information corresponds to a preset criterion;
    Comparing the read information with digital content information being reproduced; And
    And blocking the reproduction of the digital content when the read information matches the digital content information as a result of the comparison.
KR1020080101046A 2008-10-15 2008-10-15 Method and apparatus for protecting digital contents by using file I/O information KR101023805B1 (en)

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KR1020080101046A KR101023805B1 (en) 2008-10-15 2008-10-15 Method and apparatus for protecting digital contents by using file I/O information
PCT/KR2009/005932 WO2010044617A2 (en) 2008-10-15 2009-10-15 Method and apparatus for digital contents protection using file i/o information

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Citations (2)

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KR20010011788A (en) * 1999-07-30 2001-02-15 구자홍 Digital data recording and playback method for preventing copy
KR100561218B1 (en) * 2004-12-24 2006-03-15 주식회사 잉카인터넷 Method and system for preventing to get of information by outside storage

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Publication number Priority date Publication date Assignee Title
JPH11112494A (en) * 1997-10-03 1999-04-23 Mitsubishi Electric Corp Client/server system
US7672570B2 (en) * 2003-06-18 2010-03-02 Panasonic Corporation Reproducing apparatus, program and reproducing method
JP3758661B2 (en) * 2003-11-17 2006-03-22 株式会社インテリジェントウェイブ Fraud monitoring program, fraud monitoring method and fraud monitoring system
JP4835167B2 (en) * 2006-01-24 2011-12-14 富士ゼロックス株式会社 Program, system and method for license management

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010011788A (en) * 1999-07-30 2001-02-15 구자홍 Digital data recording and playback method for preventing copy
KR100561218B1 (en) * 2004-12-24 2006-03-15 주식회사 잉카인터넷 Method and system for preventing to get of information by outside storage

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WO2010044617A2 (en) 2010-04-22
WO2010044617A3 (en) 2010-07-29

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