WO2010064797A2

WO2010064797A2 - Method and apparatus for protecting digital content using hardware information

Info

Publication number: WO2010064797A2
Application number: PCT/KR2009/006748
Authority: WO
Inventors: 이윤근
Original assignee: 주식회사 씨디네트웍스
Priority date: 2008-12-02
Filing date: 2009-11-17
Publication date: 2010-06-10
Also published as: KR20100062630A; WO2010064797A3

Abstract

Disclosed are a method and an apparatus for protecting digital content using hardware information. According to one preferred embodiment of the present invention, a client connected to a display acquires, from the display, hardware information of the display, to prevent the screen on which the digital content is being reproduced from being displayed on a screen of the display, thus protecting the digital content. Then, the client compares the acquired hardware information with the preset hardware information, and reproduces the digital content if the acquired hardware information matches the preset hardware information as a result of the comparison. The present invention is advantageous in that the digital content itself output through the screen of the display can be protected, and the digital content output through another external display can also be protected.

Description

Method and device for protecting digital content using hardware information

The present invention relates to a method and apparatus for protecting content, and more particularly, to a method and apparatus for protecting digital content output through a display screen.

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, digital content is frequently used or copied without legitimate authority.

To protect such digital content, various methods and technologies such as encryption of digital content itself and authentication for use of digital content have been developed.

However, these conventional methods of protecting digital content are merely ways to prevent duplication of digital content itself or to authenticate the use of legitimate owners.

Therefore, in the conventional digital content protection method, it is difficult to prevent the digital content from being connected to a display device when a large number of users watch or connect with another device and store digital content output from another device using separate devices. There is this.

For example, if you are watching a video lesson, only one user will join as a member and output the video lecture received through the screen of a television, another display device connected to your computer, a device that many will watch or receive video lecture data from. Therefore, there is a problem that it is difficult to protect the digital content by a conventional method of protecting digital content when a plurality of viewers watch.

In addition, there is a problem that it is difficult to prevent the digital content such as video lectures output through other connected devices to be recorded again by using another device.

In order to solve the conventional problems as described above, the present invention proposes a digital content protection method and apparatus that can also protect the digital content itself output through the screen of the display device.

In addition, the present invention proposes a method and device for protecting digital content that can also protect digital content output through another external display device.

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.

According to a preferred embodiment of the present invention, the client is performed by blocking the display of the digital content on the display device to the screen of the display device in the client connected to the display device A method of protecting digital content of a device, the method comprising: obtaining hardware information of the display device from the display device; (B) comparing the obtained hardware information with preset hardware information; And (c) playing the digital content when the obtained hardware information corresponds to preset hardware information.

The digital content may be download and play digital content.

The digital content may be a digital content of a streaming method.

In step (a), hardware information of the display device may be obtained by a Plug and Play function.

In the step (b), the preset hardware information may be information stored in advance and matched with user information of the digital content.

The hardware information of the display device may be information including at least one of hardware ID and frequency information of the display device.

In step (c), when the acquired hardware information corresponds to preset hardware information, the digital content may be output to the display apparatus.

In step (c), if the acquired hardware information corresponds to preset hardware information, the digital server may request the transmission of the digital content to the media server that transmits the digital content.

According to another preferred embodiment of the present invention, in a content delivery system including a client connected to a display device and a media server for transmitting digital contents to the client. A method for protecting digital content in a media server performed by blocking output of a screen on which a digital content is played on a client to a screen of the display device, wherein the display obtained from the client by the client from the display device. Receiving (a) hardware information of the device; (B) comparing the received hardware information with preset hardware information; And (c) transmitting the digital content when the obtained hardware information corresponds to preset hardware information.

The digital content may be download and play digital content.

The digital content may be a digital content of a streaming method.

In step (c), when the acquired hardware information corresponds to preset hardware information, a signal for outputting the digital content to the display device may be transmitted to the client.

In step (c), when the acquired hardware information corresponds to preset hardware information, a signal for transmitting the digital content to the client may be transmitted to the client.

According to another aspect of the present invention, a digital content protection device is provided.

According to a preferred embodiment of the present invention, the client is performed by blocking the display of the digital content on the display device to the screen of the display device in the client connected to the display device A device for protecting digital content, the method comprising: a display device hardware information acquisition unit for obtaining hardware information of the display device from the display device; A display device hardware information comparison unit for comparing the obtained display device hardware information with preset hardware information; And a controller configured to generate a control signal for playing the digital content when the obtained hardware information of the display apparatus corresponds to hardware information of a preset display apparatus as a result of the comparison of the display apparatus hardware information comparator. A protection device of the content is provided.

The digital content may be download and play digital content.

The digital content may be a digital content of a streaming method.

Hardware information of the display device may be obtained by a Plug and Play function.

The preset hardware information of the display device hardware information comparison unit may be information stored in advance with user information of the digital content.

The controller may generate a control signal for outputting the digital content to the display apparatus when the acquired hardware information corresponds to preset hardware information.

The controller may generate a control signal for requesting transmission of the digital content to a media server that transmits the digital content when the acquired hardware information corresponds to preset hardware information.

According to another preferred embodiment of the present invention, the media performed by blocking the display of the digital content on the screen of the display device to be displayed on the display device of the client connected to the display device An apparatus for protecting digital content in a method of protecting digital content in a server, the apparatus comprising: a display device hardware information comparing unit configured to compare hardware information of the display device obtained from the client to the client with preset hardware information; And a controller configured to generate a control signal for transmitting the digital content to the client when the acquired hardware information of the display apparatus corresponds to hardware information of a preset display apparatus. A protection apparatus for digital content is provided.

The digital content may be download and play digital content.

The digital content may be a digital content of a streaming method.

The controller may generate a control signal for transmitting a signal for outputting the digital content to the display apparatus when the acquired hardware information corresponds to preset hardware information.

The controller may generate a control signal for transmitting a signal for transmitting the digital content to the client when the acquired hardware information corresponds to preset hardware information.

According to another aspect of the present invention, there is provided a recording medium recording a program for implementing a method of protecting digital content.

According to a preferred embodiment of the present invention, the client is performed by blocking the display of the digital content on the display device to the screen of the display device in the client connected to the display device A recording medium on which a program for protecting digital content is implemented, the method comprising: obtaining hardware information of the display apparatus from the display apparatus; (B) comparing the obtained hardware information with preset hardware information; And (c) reproducing the digital content when the obtained hardware information corresponds to preset hardware information. Is provided.

The digital content may be download and play digital content.

The digital content may be a digital content of a streaming method.

According to another preferred embodiment of the present invention, in a content delivery system including a client connected to a display device and a media server for transmitting digital contents to the client. A recording medium having recorded thereon a program for implementing a method of protecting digital content in the media server, the method being performed by blocking output of a screen on which the digital content is played on the client to a screen of the display device. Receiving (a) hardware information of the display apparatus obtained from the display apparatus; (B) comparing the received hardware information with preset hardware information; And (c) transmitting the digital content if the obtained hardware information corresponds to preset hardware information. Is provided.

The digital content may be download and play digital content.

The digital content may be a digital content of a streaming method.

As described above, according to the method and apparatus for protecting digital content using hardware information according to the present invention, there is an advantage that the digital content itself output through the screen of the display device can be protected.

In addition, there is an advantage to protect the digital content output through the other external display device.

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 showing the order in which the digital content protection method is implemented according to the first preferred embodiment of the present invention.

3 is a flow chart showing the order in which the digital content protection method is implemented according to the second preferred embodiment of the present invention.

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

5 is a block diagram showing the configuration of a content protection device for implementing the digital content protection method according to another embodiment of the present invention.

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.

In describing the drawings, similar reference numerals are used for similar elements. 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.

The term and / or includes a combination of a plurality of related items or any item of a plurality of related 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 contents delivery network system according to an exemplary embodiment of the present invention may include a display apparatus 100, a client 110, and a media server 130.

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

The client 110 may be connected via the communication network 120 to access the media server 130 to receive digital content, and may be connected to or through a display screen included in the client 110. It is a device that can play digital content that is output through.

The client 110 may include a connection screen such as a port or a terminal for outputting a display screen included in the client 110 or digital content played back by the connected display apparatus 100.

In addition, the client 110 may include a web browser (not shown) that allows access to the media server 130 and an application (not shown) required for playback when the content is played. It is apparent that the browser and the application may be installed in the form of a program on the client 110.

The client 110 may be connected to the media server 130 having a communication function, may install a program capable of playing the received content, and display the screen on the display apparatus 100 in which the played content is output. There is no limitation as long as the device may include a connection unit capable of outputting a screen to the display apparatus 100 as an output device.

On the other hand, the connection unit for outputting the screen to the display device 100, for example, S-Video, USB (Universal Serial Bus), HDMI (High Definition Multimedia Interface), DVI (digital video interactive), D-SUB ( Various ports or connections, such as digital video interactive-sub, are possible, but are not limited thereto.

The display apparatus 100 is a display apparatus that visually outputs data on a screen, for example, a monitor and a TV of various display methods such as a liquid crystal display (LCD), a plasma display panel (PDP), and a cathode ray tube (CRT) display. Projectors may be used, but the present invention is not limited thereto.

Meanwhile, although the display apparatus 100 and the client 110 are separately displayed in FIG. 1, it is apparent that the display apparatus 100 may be included in the client 110 and implemented as a single device.

In addition, even when the display apparatus 100 is included in the client 110 and implemented as a single device, the client 110 may be connected to the separate display apparatus 100 again.

Hereinafter, the present invention will be described based on a case where the display apparatus 100 and the client 110 are separately configured for convenience of description, but the display apparatus 100 is included in the client 110 to form a single device. It is apparent that the present invention can be applied to the case where the display device 100 is included in the client 110 and is implemented in one device form and the display device 100 is connected to the client 110 again. Do.

The client 110 may include, for example, a wired / wireless terminal such as a user personal computer (PC), a mobile phone, a personal digital assistant (PDA), a portable multimedia player (PMP), and the like, but is not limited thereto. .

The client 110 is connected to the media server 130 via the communication network 120, the communication network 120 in the present invention includes not only online and mobile communication network, but also online to the TCP / IP protocol and its upper layer. Many services exist: Hyper Text Transfer Protocol (HTTP), Telnet, File Transfer Protocol (FTP), Domain Name System (DNS), Simple Mail Transfer Protocol (SMTP), Simple Network Management Protocol (SNMP), Network File (NFS) It includes all global open network architectures that provide services.

The mobile communication network also includes an access gateway that enables transmission and reception of wireless packet data in addition to a base station (BS), a mobile telephone switching office (MTSO), and a home location register (HLR). It further includes components such as a gateway, a packet data serving node (PDSN), and the like.

The media server 130 transmits the digital content to the client 110 and, although not illustrated in FIG. 1, 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 130 is downloaded and played as downloaded and played on the client 110 as well as streaming 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 130 is illustrated in FIG. 1, a web server (not shown) that inputs information necessary for authentication to a user through the client 110 and provides a web document that provides 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 network system can be implemented by various methods.

First, the client 110 acquires hardware information of the display apparatus 100 connected with the client 110.

In the acquisition of such hardware information, the client 110 may first recognize the display apparatus 100 and may acquire hardware information from the recognized display apparatus 100. In addition, the recognition of the display apparatus 100 by the client 110 may be performed by a Plug & Play function that enables the automatic recognition of the display apparatus 100 when a new apparatus is connected.

Meanwhile, when the hardware information is obtained, the digital content is output through the screen of the display apparatus 100 only when the hardware information is compared with the preset hardware information and corresponds to the preset hardware information.

Meanwhile, the hardware information is information about the display apparatus 100 connected to the client 110, for example, according to a manufacturer or a type or method of a device that manufactures the display apparatus 100 connected to the client 110. It may be hardware ID information which is unique identification information assigned to the device.

In addition, when the display apparatus 100 is an analog apparatus, the display apparatus 100 may be information including at least one of various information about the display apparatus 100 such as frequency information for screen output.

For example, in the case of analog TV, the display apparatus 100 uses various methods such as NTSC (National Television System Committee), PAL (Phase Alternation by Line), and SECAM (Sequential Color with Memory). The frequency for the output will vary.

In other words, in the case of analog TV, horizontal and vertical frequencies, image modulation frequencies, video bands, and audio modulation frequencies are different for each method, and different countries use different standard methods.

If the preset hardware information includes only NTSC frequency information, when the TV using the NTSC frequency and the client 110 are connected, the screen played by the client 110 is also output on the TV screen, but PAL If the client 110 is connected to the TV or the SECAM method, the screen played by the client 110 is not output on the TV screen.

In addition, when the display apparatus 100 connected to the client 110 is a monitor, for example, information of the monitor connected to the client 110 may be acquired by the client 110 by a plug and play method.

For example, when the acquired monitor information is a monitor of a specific A manufacturer and the manufacturer information of the monitor included in the preset hardware information is a B manufacturer, the digital content is not played.

Meanwhile, the preset hardware information may be included in the digital content and received by the client 110, or received from the media server 130 when the digital content is played. .

In addition, by transmitting the hardware information of the display device 100 obtained from the client 110 to the media server 130 for transmitting digital content, the media server 130 compares the hardware information to control the transmission or playback of the digital content. It is possible to do so.

Meanwhile, when the digital content is played in a download and play manner, it may be more effective to control the play of the digital content in the client 110. When the digital content is provided in a streaming manner, the digital content in the media server 130 may be used. It may be more effective to control the playback or transmission of the, but is not limited thereto.

By using the hardware information of the display apparatus 100 to selectively reproduce or transmit digital content, not only can the digital content be protected but also various types of digital content protection methods are possible.

For example, in the case of the digital content of the company A, if it is desired to be played only on the display device 100 of the company A, the digital content is only included in the display device 100 of the company A by including only the hardware information of the display device 100 of the company A in the preset hardware information. Is reproduced and output.

In addition, for example, by obtaining the screen size information of the display apparatus 100 among the hardware information that can be obtained from the client 110 and comparing the screen size information of the display apparatus 100 included in the preset hardware information to a specific digital It is also possible to prevent digital content from being played back on a large display screen for the majority of the content to be viewed.

On the other hand, the method of protecting digital content using the hardware information is stored in accordance with the content user information or registered by the content user to enable the output to the display device 100 with the provision of the optional digital content according to the user of the content can do.

For example, when providing educational content, when the user registers the user, the user registers information related to the projector or TV to which the user will provide the educational content in advance so that the educational content displays the projector or TV only when the user uses the projector or TV. ) Can be used to make the educational content output.

According to this method, the content provider providing the educational content can play the content only when the information of the content user and the registered hardware information match, so that the content can be protected more effectively.

By selectively providing a display device 100 in which content can be played and output according to the content user, the content can be protected while providing the content in accordance with the purpose or use of the content user.

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 FIGS. 2 and 3.

FIG. 2 illustrates an example in which the client 110 acquires hardware information of the display apparatus 100 and compares the obtained hardware information with preset hardware information to play the content only to protect the content. 3, the client 110 acquires only the hardware information of the display apparatus 100 and transmits it to the media server 130, and compares the hardware information set in the media server 130 to the external output or playback of the content only when applicable. This is an example of protecting the content by determining the interruption.

As shown in FIG. 2, when both the acquisition of the hardware information of the display apparatus 100 and the protection of the digital content are performed in the client 110, the load of the media server 130 may be reduced. The load may be increased.

On the other hand, as shown in FIG. 3, when the client 110 acquires only hardware information of the display apparatus 100 and transmits the hardware information to the media server 130, and the method for protecting digital content is performed in the media server 130, the client ( It is possible to reduce the load of 110 and to protect the selective digital content according to the type of digital content or the client 110 according to the setting of the media server 130 as well as the type of the display apparatus 100 connected to the client 110. Although there is an advantage such as to perform, the load of the media server 130 may be increased.

First, a method of protecting digital content according to the present invention will be described with reference to FIG. 2.

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

As shown in FIG. 2, first, hardware information of the display apparatus 100 connected to the client 110 is obtained (S200).

Acquiring the hardware information may be performed by the plug and play function as described above, but is not limited thereto.

In addition, the hardware information may include various information such as a hardware ID which is unique identification information of the display apparatus 100 or frequency information for screen reproduction.

Meanwhile, it is determined whether the acquired hardware information is matched with the preset hardware information by comparing the acquired hardware information with previously stored hardware information (S202).

The hardware information preset for comparison with the hardware information obtained as described above is stored in the content protection module according to the present invention installed in the client 110 or the media server 130 or another server at the time of playing the content. Obviously, it may be transmitted to the client 110 and a comparison of hardware information may be performed.

In addition, as described above, the predetermined hardware information may be stored in accordance with the content user information or registered by the content user, thereby enabling output of the content to the display apparatus 100 together with the provision of selective digital content according to the user. However, it is not limited thereto.

On the other hand, if the hardware information of the display apparatus 100 matches the preset hardware information as a result of the determination, the client 110 plays the content (S204), but the hardware information of the display apparatus 100 matches the preset hardware information. If not, the content is not played (S206).

In FIG. 2, the content of the content is protected by the client 110 by blocking the playback of the content and the reproduction of the content. However, as described above, the content protection method continues to play the content in the client 110, but displays the content. It is apparent that the present invention can be implemented in various ways such as blocking the output to the device 100 or requesting the media server 130 to stop transmitting the digital content.

In FIG. 2, the client 110 acquires the hardware information of the display apparatus 100 and the comparison determination of the hardware information is illustrated. However, as described above, only the hardware information of the display apparatus 100 is obtained from the client 110. It is also possible to transmit to the media server 130 and the comparison of the hardware information in the media server 130 can be performed, in this case look at the order in which the method of protecting the digital content according to the present invention is performed with reference to FIG. Shall be.

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

As shown in FIG. 3, first, the client 110 acquires hardware information of the display apparatus 100 connected to the client 110 (S300), and obtains the hardware information of the obtained display apparatus 100 from the media server 130. (S302).

Meanwhile, the acquisition of the hardware information of the display apparatus 100 may be performed by using the recognition of the device by the plug and play function for recognizing the device connected to the client 110 as described above, but is not limited thereto.

The media server 130 compares the hardware information of the display apparatus 100 received from the client 110 with the hardware information of the preset display apparatus to determine whether the media server 130 matches (S304).

As a result of determination, when the hardware information of the display apparatus 100 received from the client 110 matches the hardware information of the preset display apparatus, the content is transmitted to the client 110 (S306). It is reproduced at 110 (S308).

However, as a result of determination, when the hardware information of the display apparatus 100 received from the client 110 does not match the hardware information of the preset display apparatus, the content transmission to the client 110 is not performed or the transmission is interrupted if it is being transmitted. In this case, the content transmission impossible signal may be transmitted to the client 110 (S310) so that the reproduction or transmission impossible of the content may be displayed on the screen of the client 110.

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 FIGS. 4 and 5.

4 is a block diagram showing the configuration of a content protection module that can be installed in the client 110 to implement the digital content protection method according to an embodiment of the present invention.

On the other hand, it is apparent that the content protection module may be installed in the form of a program on the client 110 or may be configured as a separate device.

4, in the above-described embodiment, the client 110 acquires hardware information of the display apparatus 100, and determines that the output or reproduction of the content is stopped using the obtained hardware information of the display apparatus 100 to protect the content. In this case, the configuration of the content protection module is illustrated.

As shown in FIG. 4, the content protection module according to the present invention may include a display device hardware information acquisition unit 400, a display device hardware information comparison unit 410, and a controller 420.

The display device hardware information acquisition unit 400 obtains hardware information of the display apparatus 100 connected to the client 110. The hardware information of the display apparatus 100 may be obtained by an original function of a program installed in the client 110, for example, a plug and play function, or may be obtained by using another method. .

The display device hardware information comparison unit 410 compares hardware information of the display device 100 acquired by the display device hardware information acquisition unit 400 with hardware information which is set in advance.

Whether the hardware information of the display device 100 obtained through the comparison in the display device hardware information comparison unit 410 is, for example, a display device of a specific manufacturer or a display device 100 having a specific screen size. You will be judged.

Meanwhile, the preset hardware information may be stored in accordance with the content user information or registered by the content user, and may be stored in accordance with the content user information or registered by the content user to provide optional digital content according to the user of the content. Output to the display apparatus 100 may be enabled.

When the hardware information of the display apparatus 100 obtained through the comparison in the display apparatus hardware information comparison unit 410 matches the preset hardware information, the digital content is played, and the reproduction of the digital content is performed by the controller 420. It can be performed by generating a control signal to allow the content to be played in the.

In addition, the controller 420 may generate a control signal for blocking playback of the received digital content when the display device hardware information comparison unit 410 does not match the preset hardware information.

Meanwhile, although a separate controller 420 is illustrated in FIG. 4, the controller 420 may be included in a controller that generates a control signal for controlling a function of the client 110.

In FIG. 4, the reproduction of the digital content is exemplified. However, preventing the digital content from being output to the display apparatus 100 means that the screen is output from the display apparatus 100 connected to the client 110 as described above. There are various methods such as a method of blocking, a method of stopping the playback of the content in the client 110, or a method of stopping the transmission of the content itself in the media server 130, and the method is not limited.

Meanwhile, although not shown in FIG. 4, the content protection module according to the present invention may further include a display device hardware information storage unit (not shown) in which hardware information of the preset display device 100 is stored.

5, in the above-described embodiment, the client 110 acquires only hardware information of the display apparatus 100, transmits the hardware information to the media server 130, and uses the hardware information of the display apparatus 100 obtained from the media server 130. If the content is protected by determining whether to stop the output or playback of the content by way of example, the configuration of the content protection device.

On the other hand, the content protection device may be installed in the form of a program in the media server 130 or may be configured as a separate device that can be connected to the media server 130.

As illustrated in FIG. 5, a content protection device for implementing the digital content protection method according to another exemplary embodiment of the present invention may include a display device hardware information comparison unit 500 and a controller 510.

The content protection device according to the present invention first receives hardware information of the display apparatus 100 connected with the client 110 from the client 110. The hardware information of the display apparatus 100 may be made by a communication unit (not shown) that may be included in the content protection device according to the present invention.

The display device hardware information comparison unit 500 compares the received hardware information of the display apparatus 100 with the hardware information of the preset display apparatus 100 as described in FIG. 4.

Determining whether the hardware information of the display device 100 obtained through the comparison in the display device hardware information comparison unit 500 is, for example, a display device of a specific manufacturer or a display device 100 having a specific screen size. Done.

Meanwhile, when the hardware information of the display apparatus 100 obtained through the comparison in the display apparatus hardware information comparison unit 500 matches the preset hardware information, the digital content is transmitted to the client. The controller 510 may generate and perform a control signal for transmitting content.

In addition, the controller 510 may generate a control signal for blocking transmission of content to the client 110 when the display device hardware information comparison unit 500 does not match preset hardware information.

Meanwhile, although a separate control unit 510 is illustrated in FIG. 5, the control unit 510 may be included in a control unit that generates a control signal for controlling a function of the content protection device according to the present invention. .

In FIG. 5, the transmission of the digital content is exemplified. However, the digital device does not output to the display device 100 connected to the client 110. As described above, the display device 100 connected to the client 110. In the method of blocking the screen output itself in the way and the way to stop the playback of the content in the client 110 is possible in a variety of ways, and the method is not limited in any way.

On the other hand, the content protection device according to the present invention is a display device that stores the hardware information of the predetermined display device 100 that can compare whether the digital content is a display device 100 that can be output through the screen of the display device 100 Can be linked to a hardware information database.

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.

Claims

A method of protecting digital content in a client performed by blocking a display of digital contents from being displayed on a screen of the display device in a client connected to a display device.

Acquiring hardware information of the display apparatus from the display apparatus;

(B) comparing the obtained hardware information with preset hardware information; And

And (c) playing the digital content when the obtained hardware information corresponds to preset hardware information.
And displaying a screen on which the digital content is played in the client in a content delivery system including a client connected to a display device and a media server for transmitting digital contents to the client. In the method of protecting digital content in the media server performed by blocking the output to the screen of the device,

(A) receiving, from the client, hardware information of the display apparatus obtained by the client from the display apparatus;

(B) comparing the received hardware information with preset hardware information; And

And transmitting (c) the digital content when the acquired hardware information corresponds to preset hardware information.
The method according to claim 1 or 2,

In step (a),

The hardware information of the display device is a digital content protection method, characterized in that obtained by the Plug and Play (Plug and Play) function.
The method according to claim 1 or 2,

In step (b),

And the preset hardware information is information stored in advance and matched with user information of the digital content.
The method according to claim 1 or 2,

And hardware information of the display device is information including at least one of hardware ID information and frequency information of the display device.
The method of claim 1,

In step (c),

And when the acquired hardware information corresponds to preset hardware information, outputting the digital content to the display device.
The method of claim 1,

In step (c),

And if the acquired hardware information corresponds to predetermined hardware information, requesting the transmission of the digital content to a media server transmitting the digital content.
The method of claim 2,

In step (c),

And transmitting the signal for outputting the digital content to the display device to the client when the acquired hardware information corresponds to preset hardware information.
The method of claim 2,

In step (c),

And transmitting a signal to the client to play the digital content on the client when the acquired hardware information corresponds to preset hardware information.
Digital to protect the digital content in the client performed by blocking the display of the digital content on the display device to the screen of the display device to the client connected to the display device In the protection device of the content,

A display device hardware information acquisition unit for acquiring hardware information of the display device from the display device;

A display device hardware information comparison unit for comparing the obtained display device hardware information with preset hardware information; And

And a controller configured to generate a control signal to reproduce the digital content when the acquired hardware information of the display apparatus corresponds to hardware information of a predetermined display apparatus as a result of the comparison of the display apparatus hardware information comparator. Protection device.
A method of protecting digital content in the media server performed by blocking a display of digital contents from being displayed on a screen of the display device in a client connected to a display device. A device for protecting digital content,

A display device hardware information comparison unit for comparing hardware information of the display device obtained from the client with the preset hardware information; And

And a controller configured to generate a control signal for transmitting the digital content to the client when the obtained hardware information of the display apparatus corresponds to hardware information of a preset display apparatus. Device for protecting digital content.
The method according to claim 10 or 11, wherein

The hardware information of the display device is a digital content protection device, characterized in that obtained by the Plug and Play (Plug and Play) function.
The method according to claim 10 or 11, wherein

And the preset hardware information of the display device hardware information comparison unit is information stored in advance with user information of the digital content.
The method according to claim 10 or 11, wherein

And hardware information of the display device is information including at least one of hardware ID information and frequency information of the display device.
The method of claim 10,

The control unit,

And generating a control signal for outputting the digital content to the display device when the acquired hardware information corresponds to preset hardware information.
The method of claim 10,

The control unit,

And generating a control signal for requesting the transmission of the digital content to a media server that transmits the digital content when the obtained hardware information corresponds to preset hardware information.
The method of claim 11,

The control unit,

And generating a control signal for transmitting a signal for outputting the digital content to the display device to the client when the acquired hardware information corresponds to preset hardware information.
The method of claim 11,

The control unit,

And generating a control signal for transmitting a signal for transmitting the digital content to the client when the acquired hardware information corresponds to preset hardware information.
A program that implements a method of protecting digital content in the client, which is performed by blocking a display of digital contents from being displayed on a screen of the display device in a client connected to a display device. In the recording medium recording the

Acquiring hardware information of the display apparatus from the display apparatus;

(B) comparing the obtained hardware information with preset hardware information; And

And (c) reproducing the digital content when the obtained hardware information corresponds to preset hardware information.
And displaying a screen on which the digital content is played on the client in a content delivery system including a client connected to a display device and a media server for transmitting digital contents to the client. A recording medium having recorded thereon a program for implementing a method of protecting digital content in the media server performed by blocking output to a screen of a device,

(A) receiving, from the client, hardware information of the display apparatus obtained by the client from the display apparatus;

(B) comparing the received hardware information with preset hardware information; And

And (c) transmitting the digital content if the acquired hardware information corresponds to preset hardware information.