KR20100045760A - Communication terminal, digital contents transmitting/receiving system and method for transmitting/receiving broadcasting contents using the same - Google Patents

Abstract

PURPOSE: A communication terminal, a digital content transmitting/receiving system and a method for transmitting/receiving broadcasting contents using the same are provided to transmit connection information from the digital contents to a digital contents distribution server to other terminal, thereby preventing illegal distribution of the digital content. CONSTITUTION: A receiving unit(121) receives the first signal from a digital contents circulation server(110). The first signal comprises digital contents. The digital contents are extracted from the first signal. It a transmission command from the digital contents to other terminal is inputted, the second signal generator generates the second signal. The second signal comprises connection information to a digital contents distribution server. A transmitting unit transmits the second signal to the other terminal.

Description

COMMUNICATION TERMINAL, DIGITAL CONTENTS TRANSMITTING / RECEIVING SYSTEM AND METHOD FOR TRANSMITTING / RECEIVING BROADCASTING CONTENTS USING THE SAME}

The present invention relates to a communication terminal, a digital content transmission and reception system, and a digital content transmission and reception method using the same.

The present invention is derived from a study conducted as part of the IT new growth engine core technology development project of the Ministry of Knowledge Economy and the Ministry of Information and Telecommunication Research and Development. Development].

Digital contents are materials and information that digitally produce and process codes, texts, voices, sound images, videos, etc., and include audiovisual contents such as dramas and movies, and video games. have. Such digital content has the advantage that it can be easily distributed using wired and wireless telecommunication networks, and according to this characteristic, the creation and distribution of digital content has been actively performed recently. In particular, with the development of digital networks such as the Internet, the electronic commerce market for digital contents is rapidly expanding.

However, since digital content can be easily recorded, copied, and transmitted through digital networks such as P2P sites and web hard, there is a problem in that it is vulnerable to the rights protection of digital content producers and digital content providers.

For example, a terrestrial TV broadcast program is transmitted to a terrestrial broadcast using terrestrial waves, and the reception is not selectively limited through program scrambling, receivable terminal authentication, viewable user authentication procedure, and the like. Accordingly, the communication terminal can receive a broadcast program without restriction, and can freely reproduce, record, and copy the received broadcast program.

As described above, since the terrestrial TV broadcast program can easily store, copy, and transmit corresponding contents using a communication terminal, it is very likely to be illegally distributed through a portal site or a P2P site. Moreover, in the case of digital TV broadcasting, even if the broadcast program is recorded and copied and distributed through a portal site such as the Internet, the same quality as the original is maintained, so efforts for protecting digital television broadcasting programs are required.

Accordingly, digital rights management (DRM) has been proposed as a technology for preventing unauthorized use of digital content and protecting the rights and interests of copyright holders, in particular, digital content providers. This prevents illegal copying of digital content and enables collective management from digital content creation to distribution through user authentication and billing procedures. It also protects the interests of copyright holders by preventing unauthorized copying and transmission of the digital content. In addition, in order to prevent illegal distribution of digital content, a method of controlling the transmission of encrypted, stored and decrypted and reproduced broadcast programs, or the copying and transmission of digital content outside of private use has been proposed.

However, digital contents, especially broadcast programs, must be protected as copyrighted works, and at the same time, circulation as creative works needs to be activated. That is, when the distribution of digital content is restricted by using the above-described technology, the distribution of digital content is restricted, and thus, a problem of inhibiting profit generation of digital content producers and providers occurs.

The present invention has been proposed to solve the above problems, and when a digital content transmission command is input to another terminal, the connection information is transmitted to a digital content distribution server for the digital content, thereby preventing illegal distribution of the digital content. It is an object of the present invention to provide a communication terminal, a digital content transmission / reception system, and a digital content transmission / reception method using the same, which activates legitimate distribution of digital content.

The present invention proposed to achieve the above object, the digital content distribution server, receiving unit for receiving a first signal containing the digital content; A second signal generator configured to generate a second signal including connection information to the digital content distribution server when a transmission command to another terminal is input to the digital content extracted from the received first signal; And a transmitter for transmitting the generated second signal to the other terminal.

In addition, the present invention provides a digital content transmission and reception system, comprising: a digital content distribution server configured to transmit a first signal including digital content; And a communication terminal for receiving a first signal from the digital content distribution server, wherein the communication terminal comprises: a receiving unit for receiving a first signal including digital content from the digital content distribution server; A determination unit determining whether the digital content can be transmitted by checking protection information of the digital content and usage information of the other terminal when a transmission command to another terminal is input to the digital content included in the received first signal; As a result of the determination of the determination unit, if the digital content can be transmitted, a second signal including the digital content is generated, and if it is impossible to transmit the digital content, connection information of the digital content to the digital content distribution server is provided. A second signal generator for generating a second signal including; And a transmitter configured to transmit the second signal to the other terminal.

In addition, the present invention provides a method for transmitting and receiving digital content, the method comprising: receiving a first signal including digital content from a digital content distribution server; Generating a second signal including connection information to the digital content distribution server when a transmission command to another terminal is input to the digital content extracted from the received first signal; And transmitting the second signal to another terminal.

According to the present invention, when a digital content transmission command to another terminal is input, by transmitting the connection information to the other content distribution server for the digital content to another terminal, to prevent illegal distribution of the digital content and at the same time By inducing legitimate distribution procedures, legitimate distribution of digital content can be activated. In particular, it is possible to efficiently manage and activate the distribution of digital content by determining whether transmission is possible through use information of another terminal or digital information protection information to be transmitted.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration of a digital content transmission / reception system 100 according to an embodiment of the present invention. As shown, the digital content transmission and reception system 100 transmits and receives digital content through communication between the digital content distribution server 110 and the plurality of communication terminals 120A, 120B, and 120C.

The digital content distribution server 110 transmits a first signal including digital content to the communication terminals 120A, 120B, and 120C. In addition, when the communication terminals 120A, 120B, and 120C that have received the second signal are connected to the digital content distribution server 110 through the connection information, the first signal is transmitted to the connected communication terminal.

Here, the digital content is a material and information obtained by digitally producing and processing codes, characters, sound, sound images, videos, and the like, and may be, for example, audiovisual content such as broadcast programs, dramas, movies, and video games.

The digital content distribution server 110 may be, for example, a broadcasting station server or a server operated by a digital content provider to distribute digital content. Here, the digital content distribution server 110 transmits the first signal including the digital content, and transmits the digital content only to the communication terminals 120A, 120B, and 120C authorized to use it through a predetermined user authentication and billing procedure. The first signal may also be transmitted.

Here, the first signal preferably further includes connection information or protection information to the digital content distribution server 110 for the corresponding digital content. The connection information is information for the communication terminals 120A, 120B, and 120C receiving the second signal to connect to the digital content distribution server 110. The connection information may be an IP address or a content identifier of the corresponding digital content distribution server 110. desirable. As such, the communication terminals 120A, 120B, and 120C may move to the corresponding digital content distribution server or directly to the corresponding digital content download address of the corresponding server using the connection information.

Protected information refers to whether or not the digital content is subject to copyright protection, and includes information on whether it can be distributed without conditions, or whether a certain procedure such as user authentication and billing is required for distribution as a copyrighted work. . Therefore, the protection information may indicate whether the digital content is allowed to be stored or copied.

The communication terminals 120A, 120B and 120C may receive a first signal from the digital content distribution server 110 or transmit and receive a second signal between the communication terminals 120A, 120B and 120C. Hereinafter, the network of the digital content transmission / reception system 100 will be described in detail with respect to the terminal 2 (120B) and the terminal 3 (120C) centering on the terminal 1 (120A).

Terminal 1 (120A) may receive a first signal from the digital content distribution server 110, it may be extracted or reproduced or stored in the digital content. In addition, when a request for transmitting the corresponding digital content is input from the terminal 2 (120B) and the terminal 3 (120C), a second signal including connection information is generated and transmitted to the terminal 2 (120B) and the terminal 3 (120C). .

Here, the second signal is to transmit to the other terminal requesting the transmission of the digital content, and if the corresponding digital content can be transmitted to the other terminal, generating a second signal further including the digital content to transmit to the other terminal It is preferable. In this case, whether the digital content can be transmitted may be determined according to usage information of another terminal and protection information of the corresponding digital content.

Accordingly, the terminal 1 120A generates a second signal further including the digital content when a digital content transmission command is input to the terminal 2 120B, which has permission to use the corresponding digital content (see dotted line in the drawing). To the terminal 2 (120B).

On the other hand, when the digital content transmission request for the terminal 3 (120C) that does not have permission to use the digital content is input, the terminal 1 (120A) generates a second signal including the connection information to the terminal 3 (120C) To send. In this case, the terminal 3 (120C) may extract the connection information from the second signal, connect it to the corresponding digital content distribution server 110, and then receive the digital content through a legal distribution procedure through a user authentication and billing procedure. . That is, the terminal 3 (120C) may receive the first signal from the digital content distribution server 110, and then extract or play the digital content from the received first signal.

According to the present invention as described above, it is determined whether to transmit the digital content to the other terminal, and if the transmission is possible to generate and transmit a second signal including the digital content, if the transmission of the digital content is impossible to connect A second signal including information is generated and transmitted. Therefore, even when transmission of digital content is impossible, the distribution of digital content can be activated by providing a legitimate distribution path to the user.

2 is a view showing the configuration of a content transmission and reception system according to an embodiment of the present invention. As shown, the digital content transmission and reception system 100 transmits and receives digital content through communication between the digital content distribution server 110 and the communication terminal 120. In addition, the communication terminal 120 includes a receiver 121, a second signal generator 124, and a transmitter 125, and further includes a storage unit 122, a determination unit 123, and a connection unit 126. It is desirable to.

The receiver 121 receives a first signal including digital content from the digital content distribution server 110. In addition, the receiver 121 may receive a second signal from another terminal. Through this, the communication terminal 120 may extract digital content from the received first signal, and then play or store the extracted digital content.

The second signal generator 124 generates a second signal including connection information to the digital content distribution server 110 for the digital content extracted from the received first signal. That is, when a digital content transmission command to another terminal is input, the second signal including the connection information is generated and transmitted to the other terminal, whereby the other terminal is directly connected to the corresponding digital content distribution server and digitally connected through a legal distribution path. To receive the content.

In this case, the second signal generator 124 may determine whether the digital content can be transmitted, and generate the second signal. In particular, when the digital content can be transmitted, the second signal generator 124 generates the second signal including the digital content. In the case where transmission of digital content is impossible, it is more preferable to generate a second signal including connection information. A detailed process of determining whether the digital content can be transmitted will be described in detail in the determination unit 123.

In addition, the transmitter 125 transmits the second signal generated by the second signal generator 124 to another terminal.

As such, by transmitting and receiving digital content using a communication terminal including a receiver 121, a second signal generator 124, and a transmitter 125, the illegal distribution of the digital content is prevented to prevent the producer and provider of the digital content. You can protect your interests. In addition, by providing a legal distribution channel of digital content, it is possible to activate the legal distribution of digital content.

In addition, the communication terminal 120 preferably further includes a storage unit 122 for storing the usage information of the other terminal. Here, the usage information of another terminal may be transmitted and stored from another terminal. In addition, the storage unit 122 may store the digital content extracted from the first signal.

In addition, the communication terminal 120 preferably further includes a determination unit 123 that determines whether the digital content can be transmitted when the digital content is transmitted to another terminal. Here, whether the digital content can be transmitted may be determined based on usage information of another terminal or protection information of the digital content, and may be determined by combining them.

First, a case of determining whether digital content can be transmitted based on usage information of another terminal will be described. The usage information is information indicating whether the corresponding terminal has a right to use the digital content. That is, when the user of the terminal is a legitimate user who has passed user authentication or paid an appropriate fee for the digital content, the terminal may be regarded as having authority to use the digital content. For example, if a user wants to store the digital content received from the digital content distribution server 110 through a legitimate distribution procedure in a computer, then copy the digital content and transmit it to his MP3 (other terminal). Since MP3 and MP3 are owned by the same user, MP3 can be regarded as having access rights to the corresponding digital content.

Therefore, the usage information may include information about the user of the terminal. In addition, the usage information may include information on whether the terminal is used for commercial purposes or for home and non-commercial purposes. In this case, it can be said that a terminal included in a non-profit purpose, that is, a private use range, has a right to use the corresponding digital content.

In this way, the determination unit 123 checks whether the other terminal has the authority to use the corresponding digital content through the use information of the other terminal. As a result of the check, if the other terminal has the authority to use the digital content, it is determined that the digital content can be transmitted. On the other hand, if the other terminal does not have a right to use the digital content, it is determined that the digital content cannot be transmitted.

Second, look at the case of determining whether the digital content can be transmitted by checking the protection information of the digital content. In this case, the protection information may be received by being included in the first signal or may be confirmed through a search. As a result of confirming the protection information of the digital content, the determination unit 123 determines that the digital content can be transmitted when the digital content is a copyright protection target. On the other hand, if the digital content is not subject to copyright protection, it is determined that the digital content cannot be transmitted.

Third, look at the case of determining whether the digital content can be transmitted by checking the usage information of the other terminal and the protection information of the digital content. The determination unit 123 determines that the digital content cannot be transmitted when the other terminal does not have the right to use the digital content and the digital content is the copyright protection target, and determines that the digital content can be transmitted otherwise. In brief, it is shown in Table 1.

Permissions O Permission X Copyright protection subject O Can be sent Can't send Copyright protected subjectX Can be sent Can be sent

That is, when another terminal has a right to use the digital content, it can be regarded as a terminal used by a legitimate user, and thus the digital content can be transmitted regardless of whether the digital content is subject to copyright protection. However, if the other terminal does not have a right to use the digital content, whether or not the digital content is subject to copyright protection is determined whether or not transmission. In other words, transmission is allowed for digital content that is not subject to copyright protection even if there is no use right. In this way, by determining whether or not transmission is possible in consideration of both the usage information and the protection information of the other terminal, it is possible to protect the copyright of the digital content and at the same time activate the distribution.

In addition, when the second signal is received from another terminal, the communication terminal 120 connects the connection unit 126 connecting the communication terminal 120 and the digital content distribution server 110 through the connection information included in the second signal. It is preferable to further include. Here, the connection unit 126 is more preferably connected between the communication terminal 120 and the digital content distribution server 110 via a wired or wireless Internet network.

For example, the terminal 1 may request the terminal 2 to transmit digital content and receive a second signal. In this case, when the digital content is included in the second signal, the digital content may be extracted and reproduced. However, if the digital content is not included in the second signal, the connection unit 126 may connect to the corresponding digital content distribution server 110 using the connection information. Through this, the terminal 1 can use the corresponding digital content through a legal distribution channel through a procedure such as user authentication and billing.

3 to 5, a digital content transmission and reception method according to an embodiment of the present invention will be described. Details of the digital content transmission and reception method are the same as described above with reference to FIGS. 1 and 2.

3 is a flowchart illustrating a digital content transmission / reception method according to an embodiment of the present invention. Here, the terminal 1 (120A) receives the first signal including the digital content from the digital content distribution server, and includes the connection information to the digital content distribution server for the digital content extracted from the received first signal. To generate a second signal. Hereinafter, a method of transmitting and receiving digital content will be described in detail with reference to a flowchart.

First, when the first signal including the digital content is transmitted from the digital content distribution server 110 (S300), the terminal 1 (120A) receives the first signal through the receiving unit 121, and then the digital signal from the first signal The content is extracted and played back or stored in the storage unit 123 (S310). Subsequently, when a request for transmission of digital content is received from the terminal 2 (120B) or a digital content transmission command is input to the terminal 2 (120B) (S320), the second signal generator 124 includes a second information including connection information. 2 generates a signal (S330). Subsequently, the transmitter 125 transmits the generated second signal to the terminal 2 120B (S340). Here, the connection unit 126 of the terminal 2 (120B) may be connected to the digital content distribution server 110 through the connection information included in the second signal to receive the digital content in a legitimate distribution procedure.

4 is a flowchart illustrating an operation sequence of a communication terminal for transmitting and receiving digital content according to an embodiment of the present invention.

First, when the first signal is received from the digital content distribution server 110 through the receiver 121 (S410), the digital content is extracted from the first signal and reproduced or stored in the storage 122. Subsequently, when a transmission command to another terminal is input to the extracted digital content (S420), the determination unit 123 determines whether transmission of the digital content is possible (S430). Subsequently, when the determination unit 123 determines that the digital content can be transmitted, the second signal generation unit 124 generates a second signal including the digital content (S440). In addition, when transmission of the digital content is impossible, a second signal including connection information is generated (S450). Subsequently, the transmitter 125 transmits the generated second signal to another terminal (S460).

FIG. 5 is a flowchart illustrating an operation of the determination unit 123, and more specifically illustrates the step (S430) of determining whether the digital content can be transmitted in FIG. 4. In particular, the present invention relates to a method of determining whether transmission is possible by checking both usage information of another terminal and protection information of digital content.

First, through the use information of the other terminal, it is checked whether the other terminal has the use authority for the corresponding digital content (S510). If the user has the right to use, it is determined that the data can be transmitted regardless of the protection information of the digital content (S520). On the other hand, if the other terminal does not have a right to use, by checking the protection information of the digital content to determine whether the copyright protection target (S530). As a result of confirming the protection information, even if the other terminal does not have a right to use, there is no fear of harming the profits of the digital content producer and provider, and thus it is determined that the data can be transmitted (S520). However, if the digital content is subject to copyright protection, it is determined that transmission is impossible (S540).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

1 is a block diagram showing a network configuration of a digital content transmission and reception system according to an embodiment of the present invention.

2 is a block diagram showing the configuration of a digital content transmission and reception system according to an embodiment of the present invention.

3 is a flowchart illustrating a digital content transmission and reception method according to an embodiment of the present invention.

4 is a flowchart illustrating a digital content transmission and reception method according to an embodiment of the present invention.

5 is a flowchart illustrating a method of determining whether digital content can be transmitted according to an embodiment of the present invention.

Claims (10)

A receiving unit for receiving a first signal including digital content from a digital content distribution server; A second signal generator configured to generate a second signal including connection information to the digital content distribution server when a transmission command to another terminal is input to the digital content extracted from the received first signal; And Transmitter for transmitting the generated second signal to the other terminal Communication terminal comprising a. The method of claim 1, A storage unit which stores usage information of another terminal; And Determination unit for determining the availability of the digital content by checking the use information of the other terminal More, The second signal generator, As a result of the determination of the determination unit, if the digital content can be transmitted, generating a second signal further including the digital content. Communication terminal. The method according to claim 1 or 2, Determination unit for determining whether the digital content can be transmitted by checking the protection information of the digital content More, The second signal generator, As a result of the determination by the determination unit, when the digital content can be transmitted, generating a second signal further including the digital content. Communication terminal. The method of claim 1, When the second signal is received from another terminal, the connection unit for connecting to the digital content distribution server through the connection information included in the second signal Digital content transmission and reception system further comprising. A digital content distribution server transmitting a first signal including digital content; And A communication terminal receiving a first signal from the digital content distribution server ≪ / RTI > The communication terminal, A receiver configured to receive a first signal including digital content from the digital content distribution server; A determination unit determining whether the digital content can be transmitted by checking protection information of the digital content and usage information of the other terminal when a transmission command to another terminal is input to the digital content included in the received first signal; As a result of the determination of the determination unit, if the digital content can be transmitted, a second signal including the digital content is generated, and if the digital content cannot be transmitted, connection information of the digital content to the digital content distribution server is provided. A second signal generator for generating a second signal including; And a transmitter for transmitting the second signal to the other terminal. Digital content transmission and reception system comprising a. The method of claim 5, The communication terminal, When the second signal is received from the other terminal, the connection unit for connecting to the digital content distribution server through the connection information included in the second signal Digital content transmission and reception system further comprising. The method of claim 5, The digital content distribution server, When the communication terminal receiving the second signal is connected to the digital content distribution server through the connection information, transmitting the first signal to the connected communication terminal. Digital content transmission and reception system. Receiving a first signal including digital content from a digital content distribution server; Generating a second signal including connection information to the digital content distribution server when a transmission command to another terminal is input to the digital content extracted from the received first signal; And Transmitting the second signal to another terminal Digital content transmission and reception method comprising a. The method of claim 8, Storing usage information of the other terminal; And Determining whether the digital content can be transmitted by checking usage information of the other terminal; More, The second signal generating step, As a result of the determination, when transmission of the digital content is possible, generating a second signal further including the digital content. How to send and receive digital content. The method according to claim 8 or 9, Determining whether the digital content can be transmitted by checking protection information of the digital content More, The second signal generating step, As a result of the determination, when transmission of the digital content is possible, generating a second signal further including the digital content. How to send and receive digital content.

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