KR20120016182A - System and method for trading digital contents with application programming interface - Google Patents

Abstract

PURPOSE: A digital content transaction system based on API(Application Programming Interface) and method thereof are provided to promote the purchase of paid applications by extracting transaction target content data and DRM(Digital Rights Management) data. CONSTITUTION: A relay server registers the information of sales target content(S110). The relay server confirms a registration state of purchase target content(S125). A purchase portable terminal installs the received content data and DRM data(S140). The purchase portable terminal eliminates the DRM data and the content(S150). The relay server registers sales completion information for the content into a transaction information database(S160).

Description

API-based digital content trading system and method {SYSTEM AND METHOD FOR TRADING DIGITAL CONTENTS WITH APPLICATION PROGRAMMING INTERFACE}

The present invention relates to a digital content trading system and method based on an application programming interface (API), and more particularly, to a system and method for trading installed digital content based on an API.

Recently, with the rapid development and diffusion of computer technology, digital devices such as PCs, notebooks, smartphones, and personal digital assistants (PDAs) are widely used.

Due to the widespread use of digital devices, digital content used in digital devices has been developed and provided to users, and digital content is an application that performs specific functions in digital devices as well as media content such as audio content and video content. There are various kinds of content such as.

As such, the digital content used in the digital device has the advantage of providing convenience to the user, but since the form is not separately, the digital content can be infinitely copied to other digital devices through duplication, so the right of the digital content provider's intellectual property rights There was a problem that cannot be guaranteed, and digital rights management (DRM) technology has been proposed to solve this problem.

Digital rights management (DRM) is a technology that protects the rights of digital content providers by preventing unauthorized use of digital content, and may provide technology to prevent illegal copying and tampering of digital content.

In particular, as mobile terminals, such as smartphones, which are easy to carry and can perform various functions, are widely used, the demand for digital contents including applications that enable the mobile terminals to be used more effectively has increased. Accordingly, the paid digital content market such as paid applications is gradually being activated.

Since such paid applications are sold for a fee, it is more important to prevent unauthorized copying or tampering. To this end, a technique for authenticating the use of a paid application by using DRM technology when the paid application is run is common. .

1 is a diagram illustrating a configuration of providing digital content to which a DRM is applied to a mobile terminal according to the related art, and using the digital content in the mobile terminal.

In the prior art, the mobile terminal 10 receives content data, for example application data, from the content management server 10 via the content mediation server 20. The mobile terminal 10 may perform a bill payment or the like in advance with respect to the content brokerage server 20 and the like, and then receive content data.

The mobile terminal 10 may receive digital rights management (DRM) data for the content data together with the content data and install the received DRM data together with the content data.

Therefore, when using the content installed by the mobile terminal 10, it should be authenticated for availability using the DRM data installed with the content.

To this end, the mobile terminal 10 receives a request for using content data from the user, and in response thereto, transmits a DRM licensing request to the DRM licensing management server 40 using the DRM data installed for the content data. When the mobile terminal 10 receives the DRM licensing authentication signal from the DRM licensing management server 40, the mobile terminal 10 drives the content data requested by the user.

In the related art, the mobile terminal 10 may receive content data and DRM data directly from the content management server 10 without passing through the content mediation server 20, and install an authentication module together with the DRM data to install the DRM data. The DRM licensing of content data may be authenticated using an authentication module installed in the mobile terminal 30 without using the licensing management server 40.

As described above, digital contents, particularly paid digital contents, installed in a mobile terminal, etc. are installed together with a DRM, and a user must be authenticated for DRM licensing in order to use the digital contents.

Therefore, in order to resell or transfer digital content installed in the mobile terminal, not only the digital content but also DRM data thereof must be provided to the transfer target terminal.

As described above, unauthorized copying and tampering with digital contents provided by DRM technology is prevented, but it is not easy to resell or transfer digital contents applied with DRM technology. Since there is a variety, there is a problem in that resale or transfer of digital contents to which DRM technology is applied is not easy.

An embodiment of the present invention is to provide a system and method for transferring digital content to which DRM technology is applied and digital content to which DRM technology is applied by installing the DRM technology.

In addition, an embodiment of the present invention is to provide a system and method that can transfer digital content to which various DRM technologies are applied to other terminals using an application programming interface (API) -based mediation module regardless of the type of DRM technology. .

As a technical means for achieving the above-described technical problem, the first aspect of the present invention comprises the steps of (a) the transaction brokerage module of the content selling terminal to receive the purchase request information for the transaction target content from the content purchasing terminal, (b) Extracting content installation data for the transaction target content, (c) extracting DRM installation data for digital rights management (DRM) data matching the transaction target content, (d) extracting the content installation data and Providing DRM installation data to the content purchase terminal; and (e) removing content and DRM data corresponding to the provided content installation data and DRM installation data, respectively, wherein the transaction target content and the transaction target content are included. The DRM data matching the data is determined based on the content installation data and the DRM installation data. It is possible to provide a method for trading digital content using an API (application programming interface) based transaction brokerage module installed in a content purchasing terminal.

In the first aspect of the invention, the step (e) is (e1) receiving the installation completion information for the content and DRM data from the content purchase terminal and (e2) the content and based on the installation completion information And removing the DRM data.

In addition, a second aspect of the present invention is a sales management unit for receiving a purchase request for a transaction target content from a content purchase terminal, a content extraction unit for extracting content installation data for the transaction target content in response to the purchase request, the purchase A DRM extraction unit for extracting DRM installation data for digital rights management (DRM) data matching the transaction target content in response to the request, and a content management unit for removing the transaction target content from which the content installation data has been extracted from the mobile terminal; And a DRM management unit for removing the DRM data from which the DRM installation data is extracted from the mobile terminal, wherein the trading management unit provides the extracted content installation data and the DRM installation data to the content purchase terminal, and A content purchase terminal is used to install the content And an application programming interface (API) -based mediation module included in the mobile terminal for installing the DRM data matching the transaction target content and the transaction target content using the DRM installation data and performing digital content transactions. can do.

In addition, in the second aspect of the present invention, the content management unit may receive content installation data for content to be purchased from a content selling terminal, and install the content to be purchased using the content installation data, and the DRM management unit The DRM installation data matching the content to be purchased is received from the content selling terminal, and the DRM data matching the content to be purchased may be installed using the DRM installation data.

According to the above-described problem solving means of the present invention, by transmitting and installing the DRM data for the DRM technology, as well as the DRM technology applied to the content purchase terminal, so that the transaction target content is driven in the content purchase terminal. have.

In addition, according to the above-described problem solving means of the present invention, since the API-based mediation module is installed in the content sales terminal and the content purchase terminal, the installed API-based mediation module extracts and installs or removes the transaction target content data and DRM data, Regardless of the type of the DRM technology, the content to which the DRM technology is applied can be transferred between terminals.

In addition, according to the above-described problem solving means of the present invention, it is possible to distribute the used digital content, that is, the digital content applied to the DRM technology that is already purchased and used by the user, so that the user can resell it. It is possible to facilitate the purchase of paid digital content, in particular paid applications.

1 is a diagram illustrating a configuration of providing digital contents to which a DRM is applied to a mobile terminal according to the related art, and using the digital contents in the mobile terminal.
2 is a diagram showing the configuration of an API-based digital content trading system according to an embodiment of the present invention;
3 is a signal flow diagram illustrating a flow of an API (application programming interface) based digital content transaction method according to an embodiment of the present invention;
4 is a diagram illustrating a configuration of an API-based mediation module included in a mobile terminal in an application programming interface (API) -based digital content transaction system according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, which means that it may further include other components, except to exclude other components unless otherwise stated.

2 is a diagram illustrating a configuration of an API-based digital content transaction system according to an embodiment of the present invention.

In one embodiment of the present invention, the sales mobile terminal 200 and the purchase mobile terminal 400 receives and installs an API-based mediation module from the application programming interface (API) -based mediation module providing server 100, such sales movement The terminal 200 and the purchase mobile terminal 400 may include a terminal capable of wireless communication such as a smart phone, a tablet PC, and a personal digital assistant (PDA).

The API-based mediation module provided from the API-based mediation module providing server 100 may be installed in the mobile terminal to connect the mobile terminal and the mediation server 300 and perform a transaction of digital content.

Hereinafter, it will be described on the premise that such API-based mediation module is installed in each mobile terminal.

The sales mobile terminal 200 requests the mediation server 300 to sell digital content installed in the sales mobile terminal 200. The mediation server 300 provides the sales information of the digital content that is the transaction target received from the sales mobile terminal 200 to the mobile terminal where the API-based mediation module is installed through a bulletin board or the like, and the purchase mobile terminal 400 is provided with the provided information. The purchase request for the corresponding digital content is transmitted to the mediation server, and if necessary, payment is performed.

The sales mobile terminal 200 confirms that a purchase request for digital contents has been generated from the mediation server 300, and confirms purchase information such as payment of a purchase price, and then installs the digital contents and corresponding DRM (digital) installed in the sales mobile terminal 200. rights management) transmits the data to the purchasing mobile terminal 400 through the mediation server (300).

The purchase mobile terminal 400 installs the digital content and DRM data received from the sales mobile terminal 200 through the mediation server 300 in the purchase mobile terminal 400. The DRM data may include a key for DRM licensing authentication and data for DRM licensing. For example, the DRM data may include a DRM licensing authentication key and data capable of confirming DRM licensing by itself in the terminal using the authentication key. In addition, the DRM data may include a DRM licensing authentication key and data transmitting the authentication key to an external authentication server to perform authentication. Using the DRM data, the purchase mobile terminal 400 may perform DRM licensing authentication on its own or in conjunction with an external server in driving or releasing content.

The selling mobile terminal 200 removes the digital contents and the DRM data sold by the selling mobile terminal 200 when the installation of the digital contents and the DRM data is confirmed in the purchasing mobile terminal 400.

In one embodiment of the present invention, since the mediation module is based on the API, it may be provided to the user using an icon, a widget, etc. in the mobile terminal as in a general application.

The API-based mediation module providing server providing such an API-based mediation module may be included in the digital content providing server or the same as the subject of the digital content providing subject, for example, the digital content providing server. Therefore, the digital content providing server may provide not only digital content but also API based mediation module.

In one embodiment of the present invention, the DRM applied to the digital content can perform the individual content locking function to control the driving of the content, and furthermore, the authentication of the content interface through which the user can use the content is performed by the DRM. It is also possible to perform a system lock function that only exposes the system. For example, such a system locking function may be performed using a license manager such as FLEXlm.

FIG. 3 is a signal flow diagram illustrating a flow of an API (application programming interface) based digital content transaction method according to an embodiment of the present invention.

In step S105, the sales mobile terminal 200 transmits the information of the content to be sold and the terminal information of the sales mobile terminal 200 to the mediation server 300.

In other words, the sales mobile terminal 200 is an API-based mediation module that pre-installs information of digital contents to be sold, price information to be sold, and information of the sales mobile terminal 200 among digital contents installed in the sales mobile terminal 200. Transfer to the mediation server 300 by using.

In step S110, the mediation server 300 registers the information on the sale target content received in step S105 with the sale mobile terminal 200 and registers it in the transaction target list.

The mediation server 300 receives a request for selling digital content from one or more mobile terminals, registers information of one or more contents to be sold with the request for sale in a transaction target list, and accesses the mediation server 300. It can provide to one mobile terminal.

Accordingly, the mediation server 300 registers the information of the content to be received received in step S105 in a transaction information database including one or more such transaction information.

In step S115, the mediation server 300 provides the purchase mobile terminal 400 with information of the content to be sold registered in step S110.

As described above, the mediation server 300 may provide one or more mobile terminals connected to the mediation server 300 with information of one or more content to be sold registered in the transaction information database, in step S110. Information on the target content registered in the may be provided to the purchase mobile terminal (400).

In step S120, the purchase mobile terminal 400 transmits a purchase request for the content to be sold included in the information received in step S115 to the mediation server 300.

That is, the purchase mobile terminal 400 displays the target content information received in step S115 and provides the same to the user, and receives the user's purchase intention for the content sold by the sales mobile terminal 200 and receives the mediation server. The purchase request information is transmitted to the 300.

The purchase request information transmitted by the purchase mobile terminal 400 may include payment information necessary for purchase, for example, identification information of the payment means, authentication information, and the like, together with the information of the content of the transaction.

In step S125, the mediation server 300 checks whether the purchase target content requested by the purchase mobile terminal 400 is properly registered for sale using the purchase request information received in step S120. .

In addition, the mediation server 300 checks whether the payment information included in the purchase request information received in step S120 is appropriate and performs payment of the cost according to the transaction using the received payment information.

In step S130, the mediation server 300 transmits the purchase request information identified in step S125 and the payment completion information on which the payment was performed to the sales mobile terminal 200.

In step S135, the sales mobile terminal 200 responds to the payment result information received in step S130, installation data of the content matching the transaction target content information included in the purchase request information, and digital DRM of the corresponding content. The installation data of rights management) is extracted from the sales mobile terminal 200 and transmitted to the purchasing mobile terminal 400 via the mediation server 300.

That is, the sales mobile terminal 200 extracts content installation data used for content installation and DRM installation data used for DRM data installation based on the corresponding content and DRM data installed in the mobile terminal 200 to purchase the mobile terminal 400. To send).

The DRM installation data may include a key for performing DRM, for example, a key value required for licensing through DRM, and the key value may be installed in the purchasing mobile terminal 400 by the DRM installation data. have. In addition, the DRM installation data may include data for enabling the purchase mobile terminal 400 to install data for authenticating licensing or interworking with an external server using a key value for performing DRM. have.

In step S140, the purchase mobile terminal 400 installs the content data and the DRM data received in step S135 on the purchase mobile terminal 400.

In step S145, the purchase mobile terminal 400 transmits the installation information of the content data and DRM data installed in step S140 to the sales mobile terminal 400 through the mediation server 300.

In step S150, the sales mobile terminal 200 confirms that the content to be traded and the DRM data corresponding thereto are installed in the purchase mobile terminal 400 by using the installation information received in step S145, and the content and the transaction target. The DRM data for this is removed from the sales mobile terminal 400.

In other words, the sales mobile terminal 200 is installed on the purchase mobile terminal 200 that purchased the content and the DRM data for the transaction target content is confirmed that the purchase of the purchase mobile terminal 200 is completed, The completed content and the DRM data thereof are removed from the selling mobile terminal 200 to complete the sale of the corresponding content.

In step S155, the sales mobile terminal 200 transmits the removal information including the information of the content removed in step S150 to the mediation server 300.

In step S160, the mediation server 300 registers the transaction completion information for the corresponding content in the transaction information database based on the installation information received in step S145 and the removal information received in step S155.

In the above-described embodiment of the present invention, the sales mobile terminal 200 has been described as transmitting the content installation data and the DRM installation data to the purchase mobile terminal 400 through the mediation server 300, but the content installation data and the DRM installation. Data may be transmitted directly from the sales mobile terminal 200 to the purchasing mobile terminal 400 without passing through the intermediary server 300.

In addition, in the above-described embodiment of the present invention, the sales mobile terminal 200 confirms that the content and DRM data that is the transaction target is installed in the purchase mobile terminal 400 and then the content and the DRM data that is the transaction target from the sales mobile terminal 200. Although it has been described as removing the content, the content installation data and the DRM installation data after the content installation data and DRM installation data is transmitted to the purchase mobile terminal 400, the content and DRM data that is the target of the transaction without checking whether the installation in the purchase mobile terminal 400 is sold mobile terminal ( 200).

4 is a diagram illustrating a configuration of an API-based mediation module included in a mobile terminal in an application programming interface (API) -based digital content transaction system according to an embodiment of the present invention.

The API-based mediation module 500 according to an embodiment of the present invention includes a network access manager 510, a trade manager 520, a content extractor 530, a digital rights management (DRM) extractor 540, and a content manager. 550 and a DRM management unit 560.

The network connection manager 510 manages a connection of a mobile terminal (not shown) to the network including the API-based mediation module 500. In particular, the network connection management unit 510 manages the connection between the mobile terminal and an intermediate server (not shown), and transmits and receives sales information, contents and DRM data.

In addition, when the DRM licensing authentication by an external authentication management server (not shown) is required for the content installed in the mobile terminal to be used, the network access management unit 510 may perform the DRM licensing authentication by accessing the authentication management server. .

The sales management unit 520 receives the intention to sell the contents included in the mobile terminal from the user, and generates the sales information about the corresponding contents, for example, basic information of the contents, sales amount information, and the like. Send to mediation server through. As described above, the sales information generated by the trading manager 520 may be registered in the transaction information database of the mediation server.

In addition, the trading manager 520 provides the trading information received from the mediation server through the network connection manager 510 to the user using an output device such as a display device of the mobile terminal. The trading manager 520 receives the purchase intention and the payment information from the user, and transmits the input purchase intention and the payment information to the mediation server.

The trading manager 520 receives the content to be purchased and the DRM data of the corresponding content, and installs the same in the mobile terminal through the content manager 550 and the DRM manager 560.

When the sale or purchase of the content is completed and the corresponding content is removed or installed, the sales management unit 520 transmits the sale or purchase completion information of the content to the mediation server.

The content extractor 530 extracts installation data of the content to be sold from the mobile terminal in response to a purchase request for the content to be sold. That is, the content extraction unit 530 extracts installation data of the content registered in the mediation server as the content for sale by the sales management unit 520 from the mobile terminal in which the content is installed.

The mobile terminal purchasing the content may install the purchased content by using the installation data of the content.

The DRM extracting unit 540 extracts, from the mobile terminal, DRM installation data for installing DRM data for the content to be sold in response to a purchase request for the content to be sold. As described above, the DRM installation data may include a key for performing DRM, for example, a key value required for licensing through DRM. In addition, the DRM installation data may include data for the purchase terminal 400 to authenticate DRM licensing on its own using the key value or to install a program for authenticating DRM licensing in conjunction with an external server. Similar to the installation data of the content, the mobile terminal purchasing the content installs the DRM data for the purchased content using the DRM installation data, for example, a security key for the DRM, and a program for authenticating the DRM licensing using the same. Can be.

When the content management unit 550 sells the content, the content management unit 550 removes the sold content from the mobile terminal. The content manager 550 may receive the purchase completion information of the content through the mediation server or directly from the purchase mobile terminal, and in response thereto, remove the sold content from the mobile terminal.

The content manager 550 may remove the sold content from the mobile terminal at the same time as transmitting the installation data of the content to the content purchase mobile terminal through a mediation server or directly to the purchase mobile terminal.

In addition, when the content is purchased, the content management unit 550 receives the installation data of the purchased content through the mediation server or directly from the mobile terminal, and installs the purchased content on the mobile terminal using the received installation data. do.

When the content is sold, the DRM manager 560 removes the DRM data for the sold content from the mobile terminal. The DRM management unit 560, like the content management unit 550, removes the DRM data of the sold content after receiving the purchase completion information of the content from the mediation server or the purchase mobile terminal, or moves the DRM installation data to the mediation server or the purchase move. The DRM data may be removed from the mobile terminal while transmitting to the terminal.

In addition, when the content is purchased, the DRM management unit 560 receives the DRM installation data for the purchased content from the mediation server or the purchase terminal, and installs the DRM data in the mobile terminal using the received DRM installation data.

One embodiment of the present invention can also be implemented in the form of a recording medium containing instructions executable by a computer, such as a program module executed by the computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, computer readable media may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

While the methods and systems of the present invention have been described in connection with specific embodiments, some or all of those elements or operations may be implemented using a computer system having a general purpose hardware architecture.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: API based mediation module providing server
200: sale mobile terminal 300: purchase mobile terminal
400: mediation server
500: API based mediation module

Claims (11)

In the method of trading digital content using a transaction brokerage module based on the application programming interface (API),
(a) receiving, by the transaction brokerage module of the content selling terminal, purchase request information on the transaction target content from the content purchasing terminal,
(b) extracting content installation data for the transaction target content;
(c) extracting DRM installation data for digital rights management (DRM) data matching the transaction target content;
(d) providing the extracted content installation data and DRM installation data to the content purchase terminal; and
(e) removing content and DRM data corresponding to the provided content installation data and DRM installation data, respectively;
Including,
And the DRM data matching the transaction target content and the transaction target content are installed in the content purchase terminal based on the content installation data and the DRM installation data.
The method of claim 1,
In step (e),
(e1) receiving installation completion information on the content and DRM data from the content purchase terminal; and
(e2) removing the content and the DRM data based on the installation completion information;
Digital content transaction method comprising a.
The method of claim 1,
In the step (d), at least one of the content installation data and the DRM installation data is transmitted to the content purchase terminal through a mediation server.
The method of claim 1,
The purchase request information includes the payment completion information for the transaction target content.
A computer-readable recording medium having recorded thereon a program for performing a function of trading digital content using an API (application programming interface) based transaction brokering module,
A computer-readable recording medium having recorded thereon a program for performing each step according to any one of claims 1 to 4.
In the mediation module based on the application programming interface (API) included in the mobile terminal to perform digital content transactions,
A sales management unit which receives a purchase request for the transaction target content from the content purchase terminal;
A content extraction unit for extracting content installation data for the transaction target content in response to the purchase request;
A DRM extracting unit extracting DRM installation data for digital rights management (DRM) data matching the transaction target content in response to the purchase request;
A content manager which removes the transaction target content from which the content installation data is extracted from the mobile terminal;
A DRM management unit which removes the DRM data from which the DRM installation data is extracted from the mobile terminal
Including,
The trading management unit provides the extracted content installation data and the DRM installation data to the content purchase terminal, and the content purchase terminal uses the content installation data and the DRM installation data, and the transaction target content and the transaction. An API based mediation module that installs DRM data that matches the target content.
The method according to claim 6,
And the content management unit removes the transaction target content based on content installation completion information received from the content purchase terminal.
The method according to claim 6,
And the DRM management unit removes the DRM data matching the transaction target content based on the DRM data installation completion information received from the content purchase terminal.
The method according to claim 6,
The content management unit receives content installation data for the content to be purchased from the content selling terminal, and installs the content to be purchased using the content installation data API-based mediation module.
The method according to claim 6,
The DRM management unit receives the DRM installation data matching the content to be purchased from the content selling terminal, and installs the DRM data matching the content to be purchased using the DRM installation data API-based mediation module.
The method according to claim 6,
The sales management unit API-based mediation module for transmitting the content installation data and the DRM installation data to the content purchase terminal through a mediation server.

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