KR20110091399A - Method, system, terminal and computer-readable recording medium for providing and reading contents in digital rights management system - Google Patents

Abstract

PURPOSE: A method, a system, a terminal and a computer-readable recording medium for providing and reading content in a DRM(Digital Rights Management) system is provided to exactly check the number of content sales record. CONSTITUTION: If a content is request from a user terminal(100), the requested content is packaged and transmitted to the user terminal. The packaging signal about the content is transmitted to a content provider server(400). A license checking allowance request is received from a user terminal(640). A CP server receives a content in which a packaging signal is transmitted and a license checking allowance request is received. If the content is identical, the checking allowance signal about the content is transmitted(660).

Description

A method of providing contents of a DRM system, a method of viewing contents of a user terminal, a DRM system for the above method, a user terminal, and a computer-readable recording medium. SYSTEM}

The present invention relates to a content providing method of a DRM system, a content viewing method of a user terminal, a DRM system for the method, a user terminal and a computer-readable recording medium. More specifically, the CP server receives and compares both the packaging signal of the DRM server and the license viewing permission application on the terminal, and transmits the reading permission signal to the user terminal only when the contents match each other, thereby preventing illegal redistribution of the content. The present invention relates to a method of providing a content of a DRM system, a method of viewing a content of a user terminal, a DRM system for the method, a user terminal, and a computer-readable recording medium.

Recently, due to the development of information and communication technology and the diversification of contents, the existing analog contents have been changed into digital contents with more convenient and faster spreading speed. However, since digital contents can be easily copied and distributed by anyone, the demand for content protection technology is rapidly increasing as the content providers and content creators are accelerated.

Therefore, as a solution for this, digital rights management (DRM) technology for protecting digital content and a method of serving content applied with such DRM technology have been developed.

As described above, technologies for protecting digital content include digital watermarking, digital object identifier (DOI), and interoperability of data in E-Commerce system (INDECS), as well as the DRM. DRM is used as a concept to prevent illegal distribution and duplication of contents, to make the contents available only to legitimate users, and to manage the copyright of contents through user management and billing services.

However, under the conventional DRM technology, the content producer (CP) uploads the content produced by the content producer to the content server, and when the content is sold from the content server, the content producer provides real-time sales information such as the amount of content sold. There was a problem that was difficult to grasp. Therefore, even if the DRM technology is illegally distributed through other channels, the content creator is not able to recover the damage until the illegal distribution is already widespread and the damage cannot be recovered. There was a problem.

It is an object of the present invention to solve all the problems described above.

In addition, the present invention is to be able to check the sales information of the content in real time in the CP server, to provide a content providing method of the DRM system and a content viewing method of the user terminal so that the CP server can clearly grasp the content sales number For that purpose.

In addition, the present invention is compared to receive both the packaging signal of the DRM server and the license viewing permission application from the terminal in the CP server, and delivers the reading permission signal to the user terminal only when the content of the content is matched, the corresponding broadcast content for Its purpose is to protect copyrights by preventing unauthorized distribution.

Representative configuration of the present invention for achieving the above object is as follows.

According to an aspect of the present invention, if content is requested from a user terminal, packaging the requested content and transmitting the received content to the user terminal, and transmitting a packaging signal for the content to a CP server, the user at the CP server. Receiving a license read permission request from a terminal, and when the content in which the packaging signal is transmitted from the CP server matches the content received from the license read permission request, the user permission to read the content to the user terminal; A content providing method of a digital right management (DRM) system including transmitting a signal is provided.

According to another aspect of the present invention, a method for receiving and viewing content in a user terminal provided with content from a DRM system, the method comprising: requesting content from a content server, receiving the packaged content, and transmitting to a CP server Requesting a license viewing permission of the content, and when the content of the packaging signal received by the CP server at the time of the packaging process is compared with the content of the license reading permission request, and judges that the content is the same, the content is determined. A method is provided that includes receiving a read permission signal for a.

According to another aspect of the present invention, a content server receiving a content request from a user terminal, when receiving a DRM packaging request from the content server, performs a packaging for the content, and the DRM for transmitting the packaged content to the user terminal A server, and a CP server receiving a license for the content from the user terminal, wherein the DRM server transmits a packaging signal for the content to the CP server, and the CP server transmits the licensed content and the license. When the content of the packaging signal is matched, the DRM system is provided, characterized in that for transmitting the read permission signal for the content to the terminal.

According to another aspect of the present invention, a content receiving and receiving unit for receiving content from a DRM system and viewing the received content, requesting a content from a content server, and receiving the packaged content, the content transmitting / receiving unit, CP The license transmission and reception unit for requesting the license viewing permission of the content to the server, receiving the reading permission signal for the content, and receiving the reading permission signal for the content, referring to the license information included in the reading permission signal. And a content reading unit for reading the packaged content, wherein the license transmitting and receiving unit compares the contents of the packaging signal received at the time of the packaging process by the CP server with the content requested to read the license and determines that the two match. If so, permission to view the content The user terminal characterized in that receiving a call, is provided.

In addition, there is provided another method, system, and computer readable recording medium for recording a computer program for carrying out the method for implementing the present invention.

According to the present invention, since the CP server receives and compares both the packaging signal of the DRM server and the license view permission application from the terminal, the CP server transmits the view permission signal only to the user terminal only when the contents are matched with each other. By being able to confirm the sales information of the content, the effect that the CP server can grasp the content sales number clearly is achieved.

Further, according to the present invention, the effect of protecting copyrights is achieved by preventing unauthorized distribution of the broadcast content.

1 is a view schematically showing the configuration of an entire system according to an embodiment of the present invention.
2 is a diagram illustrating an internal configuration of the user terminal 100 according to an embodiment of the present invention by way of example.
3 is a diagram exemplarily illustrating a structure of a DRM license 500 according to an embodiment of the present invention.
4 is a flowchart showing the operation of the entire system according to an embodiment of the present invention.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[Preferred Embodiments of the Invention]

Configuration of the entire system

1 is a view schematically showing the configuration of an entire system according to an embodiment of the present invention.

Referring to FIG. 1, the entire system according to an embodiment of the present invention may include a user terminal 100, a content server 200, a DRM server 300, and a content producer (CP) server 400. Can be.

First, according to an embodiment of the present invention, the user terminal 100 may request content from the content server 200 and receive the packaged content from the DRM server 300. In addition, according to an embodiment of the present invention, the user terminal 100, the user transmits and / or receives data with the content server 200, DRM server 300, CP server 400 via a communication network (not shown) As a digital device including a function to enable the digital device having a memory means and a microprocessor, the digital device can be adopted as the user terminal 100 according to the present invention.

Detailed configurations and functions of the user terminal 100 will be described later.

According to an embodiment of the present invention, the content server 200 receives the content request from the user terminal 100, and in order to package the DRM for the requested content, the DRM server 300 requests the packaging of the above content. To perform the function.

According to an embodiment of the present invention, when the DRM server 300 receives a DRM packaging request from the content server 200, the DRM server 300 performs packaging for the content and transmits the packaged content to the user terminal 100 requesting the content. do. According to an embodiment of the present invention, the content packaging operation performed by the DRM server 300 may be performed using at least one of license information, device information of the user terminal 100 requesting the content, and time information for which the content is requested. Can be. In addition, according to an embodiment of the present invention, when performing the packaging, the DRM server 300 transmits a packaging signal for the content currently performing packaging to the CP server 400.

According to an embodiment of the present invention, the CP server 400 may receive a request for a license for content to be viewed from the user terminal 100. In addition, according to an embodiment of the present invention, the CP server 400 is a user requesting a license when the content requested for a license from the user terminal 100 and the content transmitted from the DRM server 300 match. The view permission signal for the content may be transmitted to the terminal 100.

Configuration of User Terminal

Hereinafter, the internal configuration of the user terminal 100 performing important functions for the implementation of the present invention and the function of each component will be described.

2 is a diagram illustrating an internal configuration of the user terminal 100 according to an embodiment of the present invention by way of example.

Referring to FIG. 2, the user terminal 100 according to an embodiment of the present invention may include a content transmission / reception unit 110, a license transmission / reception unit 120, and a content viewing unit 130.

According to an embodiment of the present invention, at least some of the content transmitting and receiving unit 110, the license transmitting and receiving unit 120 and the content viewing unit 130 is a content server 200, DRM server 300 or CP server 400 May be program modules in communication with Such program modules may be included in the user terminal 100 in the form of an operating system, an application program module, and other program modules, and may be physically stored on various known storage devices. In addition, these program modules may be stored in a remote storage device that can communicate with the user terminal 100. On the other hand, such program modules include, but are not limited to, routines, subroutines, programs, objects, components, data structures, etc. that perform particular tasks or execute particular abstract data types, described below, in accordance with the present invention.

First, the content transmission and reception unit 110 according to an embodiment of the present invention may perform a function of requesting content to the content server 200 and receiving the packaged content from the DRM server 300.

Next, according to an embodiment of the present invention, the license transmitting and receiving unit 120 requests a license viewing permission of the content to be viewed on the CP server 400, when the CP server grants it, the CP server 400 And a function of receiving a view permission signal for the content from the terminal. Specifically, according to an embodiment of the present invention, the license transmitting and receiving unit 120, the content of the packaging signal received from the DRM server 300 during the packaging process and the content license request permission from the user terminal 100 applied for In the case where the CP server 400 compares and matches the content, the CP server 400 may receive a view permission signal for the content from the CP server 400.

According to an embodiment of the present invention, when the license transmitter and receiver 120 receives a view permission signal for content from the CP server 400, the content reading unit 130 is packaged with reference to the license information included in the view permission signal. View the created content.

Hereinafter, the structure of the DRM license according to an embodiment of the present invention will be described.

3 is a diagram exemplarily illustrating a structure of a DRM license 500 according to an embodiment of the present invention.

Referring to FIG. 3, the DRM license 500 according to an embodiment of the present invention may include a license ID 510, a content ID 520, a device ID 530, a content encryption key 540, and usage restriction information ( 550), and the like.

According to an embodiment of the present invention, the DRM license 500 is a license required for using the packaged content received from the content server 200 and the DRM server 300 in the user terminal 100.

According to an embodiment of the present invention, the license ID 510 is information for confirming the order of issuance of the license.

According to an embodiment of the present invention, the content ID 520 is information for specifying the content that is the subject of the DRM license 500. UUID (Universal Unique IDentifier) may be used as the content ID.

According to an embodiment of the present invention, the device ID 530 includes information for authenticating a device that can legally use the DRM license 500.

According to an embodiment of the present invention, the content encryption key 540 includes information on the encryption key required to decrypt the content to be viewed.

According to an embodiment of the present invention, the usage restriction information 550 may include information for restricting the use of the content, such as a usage rule, the number of times that can be played, and a period of time that can be played.

Hereinafter, an operation overview of the entire system according to an embodiment of the present invention will be described.

4 is a flowchart showing the operation of the entire system according to an embodiment of the present invention.

1 to 4, the entire system according to an embodiment of the present invention operates in the following manner.

First, the content transmitting and receiving unit 110 of the user terminal 100 requests the content server 200 (step 600).

Next, when the content server 200 receives a content request from the user terminal 100, the content server 200 before transmitting the content to the user terminal 100, the DRM server (DRM server) for the DRM packaging operation for security ( In step 610, the content is transmitted, and the DRM packaging is requested.

Upon receiving the content from the content server 200 and receiving the DRM packaging, the DRM server 300 packages the requested content and transmits the requested content to the user terminal 100 (step 620). In this case, the packaging operation may be performed using at least one of license information granted to the content, device information of the user terminal 100, and time information for which the content is requested from the user terminal 100 toward the content server 200.

Meanwhile, while performing the above step 620, the DRM server 300 transmits a packaging signal toward the CP server 400 (step 630). The CP server indicates that a packaging operation has been performed on the content in step 620 or during or after the execution of step 620, in order to compare the content in which the packaging signal has been transmitted with the content for which the license viewing permission is applied, in step 650 to be described later. Corresponds to the task reported to (400).

Next, the user terminal 100 receiving the packaged content from the DRM server 300 through the content transmitting and receiving unit 110 attempts to view the packaged content through the content viewing unit 130. In order to view the packaged content, the user terminal 100 needs to receive a read permission signal from the CP server 400, and thus the user terminal 100 allows the user to read the license of the content to the CP server 400 through the license transceiver 120 in order to read the content. Apply (step 640).

Thereafter, the CP server 400 receives the license viewing permission application from the user terminal 100, and determines whether the content for which the packaging signal has been transmitted in step 630 matches the content for which the license viewing permission is applied in step 640. Comparative determination (step 650).

As a result of comparing and determining in step 650, when the content in which the packaging signal is transmitted in step 630 matches the content in which the license reading permission is applied in step 640, the CP server 400 permits reading to the user terminal 100. In step 660, the signal is transmitted. In this case, if the comparison result is determined, if the content in which the packaging signal is transmitted in step 630 and the content for which license access permission is applied in step 640 do not match, a message may be transmitted that the reading is not allowed. It can be designed in a way that does not transmit.

Subsequently, when the user terminal 100 receives a read permission signal for the content through the license transceiver 120, the license information included in the read permission signal through the content view unit 130 of the user terminal 100 is referred to. The packaged content may be viewed (step 670). The view permission signal may include the DRM license 500 described with reference to FIG. 3, and the content viewing unit 130 of the user terminal 100 may include the license ID 510 included in the DRM license 500 and the content for viewing the content. After checking the ID 520, the device ID 530, the restriction information 550, and the like, the content can be read after decrypting the encrypted content using the content encryption key 540.

Embodiments according to the present invention described above may be implemented in the form of program instructions that may be executed by various computer components, and may be recorded in a computer-readable recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the computer-readable recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs, DVDs, and magneto-optical media such as floptical disks. media), and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.

Although the present invention has been described by specific embodiments such as specific components and the like, but the embodiments and the drawings are provided to assist in a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations can be made from these descriptions.

Accordingly, the spirit of the present invention should not be limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the appended claims, fall within the scope of the spirit of the present invention. I will say.

100: user terminal
110: content transceiver
120: license transceiver
130: content viewing unit
200: content server
300: DRM server
400: CP server
500: DRM License
510: license ID
520: Content ID
530: device ID
540: content encryption key
550: Restriction Information

Claims (10)

When the content is requested from the user terminal, packaging the requested content and transmitting the received content to the user terminal, and transmitting a packaging signal for the content to a CP server;
Receiving a license viewing permission application from the user terminal at the CP server, and
Transmitting, from the CP server, a read permission signal for the content to the user terminal when the content in which the packaging signal is transmitted matches the content received from the license read permission request;
Content providing method of the digital right management (DRM) system comprising a. The method of claim 1,
The packaging is content providing method of the DRM system, characterized in that performed using at least one of the license information, the device information of the user terminal, and the time information when the content is requested. The method of claim 1,
And if the user terminal receives a read permission signal for the content, the method further comprising the step of viewing the packaged content. In the method for receiving and reading the content in the user terminal provided with the content from the DRM system,
Requesting content from the content server,
Receiving the packaged content;
Applying for license viewing permission of the content to a CP server, and
Receiving a read permission signal for the content when the content of the packaging signal received by the CP server at the time of the packaging process and the content for which the license reading permission is applied are determined to be identical.
How to include. The method of claim 4, wherein
And receiving the read permission signal for the content, referring to the license information included in the read permission signal, to view the packaged content. A content server that receives a content request from a user terminal;
When the DRM packaging is requested from the content server, the DRM server performs the packaging of the content and transmits the packaged content to the user terminal, and
CP server receiving a license request for the content from the user terminal,
The DRM server transmits a packaging signal for the content to the CP server,
The CP server transmits a read permission signal for the content to the terminal when the licensed content and the content to which the packaging signal is transmitted match. The method of claim 6,
The packaging is performed using at least one of the license information, the device information of the user terminal and the time information for which the content is requested. In the user terminal receiving the content from the DRM system, and reading the provided content,
A content transmission / reception unit for requesting content from a content server and receiving the packaged content;
A license transmitting / receiving unit which requests a license viewing permission of the content to a CP server, and receives a reading permission signal for the content;
A content reading unit configured to read the packaged content by referring to license information included in the reading permission signal when the reading permission signal for the content is received,
The license transceiver unit receives a read permission signal for the content when it is determined that the contents of the packaging signal transmitted by the CP server at the time of the packaging process and the content requested for permission to read the license match each other. User terminal, characterized in that. The method of claim 8,
The packaging is performed by using at least one of the license information, device information of the user terminal, and time information for which the content is requested. A computer-readable recording medium for recording a computer program for executing the method according to any one of claims 1 to 5.

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