KR20090043100A - System of providing contents-pre-view service and method thereof - Google Patents

Abstract

The present invention relates to a system and method for providing a content pre-listening service that enables a user to purchase the content after using the content by using the DRM content and the pre-listening right object stored in the user terminal.

A method of providing a content pre-listening service by a terminal of a user includes: (a) storing a content and a pre-listening rights object for execution of the content before purchase of the content; (b) determining a request to execute the content; And (c) if the content is requested to be executed, executing the content using the pre-listen right object.

Content, Preview, Rights Objects, Digital Rights Management, DRM

Description

System and method for providing content preview service {SYSTEM OF PROVIDING CONTENTS-PRE-VIEW SERVICE AND METHOD THEREOF}

The present invention relates to a system and method for providing a content pre-listening service that enables a user to purchase the content after using the content by using the DRM content and the pre-listening right object stored in the user terminal.

With the development of communication technology, various contents are provided through various communication networks such as the Internet and mobile communication networks, and the field of their use is also expanding. In addition, Hyundai is rapidly moving from the analog era to the digital era, and copyright infringement is increasing day by day due to the development of digital technology and the expansion of new copy equipment. In order to effectively protect digital content, the concept of digital rights management (DRM) was introduced.

Digital Rights Management (DRM) allows unrestricted access to encrypted digital content, and requires the use of a right object called the Right Object to decrypt and play encrypted digital content. To protect. Therefore, digital content can be effectively protected by applying a digital rights management scheme.

The pre-listening service refers to a service that allows a user to use the content before purchasing the content and then decide whether to purchase the content. By the way, the conventional pre-listening service is made in a streaming (streaming) method. That is, the pre-listening service is provided by transmitting content contents to the user's terminal in real time from the content providing server.

In the streaming method, the pre-listening service should simultaneously perform transmission from the content providing server and the user's terminal. Therefore, when the pre-listening service provides a different type of pre-listening service instead of using the content once, for example, when the pre-listening service having a limit such as the number or the period is provided, the number of times that the pre-listening can be listened to is possible. Alternatively, in order to use the content for a period of time, it is inconvenient to use a pre-listening service by connecting to a content providing server every time.

The technical problem to be achieved by the present invention is a system and method for providing a content pre-listening service that enables a user to purchase the corresponding content after using the content by using the DRM content and the pre-listening right object stored in the user terminal. To provide.

According to an aspect of the present invention, a method of providing a content pre-listening service by a user terminal is provided. A method of providing a content pre-listening service includes the steps of: (a) storing a content and a pre-listening right object for execution of the content before purchase of the content; (b) determining a request to execute the content; And (c) if the content is requested to be executed, executing the content using the pre-listen right object.

According to another aspect of the present invention, a method for providing a content pre-listening service to a user terminal by a server managing a pre-listening right object is provided. A method of providing a content pre-listening service, the method comprising: (a) receiving a download request of a pre-listening right object for execution of the content from a user's terminal before purchasing the content; (b) creating a rights object for preview; And (c) transmitting a pre-listening right object to the user's terminal.

According to another aspect of the present invention, a system for providing a content pre-listening service to a user terminal is provided. Contents pre-listening service providing system, the content providing server for providing content to the user terminal; A digital rights management server providing a pre-listening right object for execution of the content before purchase of the content to the user terminal; And a pre-listen management server for determining whether to provide a pre-listen right object to the user from the digital rights management server.

According to another feature of the present invention, a terminal for providing a content pre-listening service is provided. Contents pre-listening service providing terminal, the storage unit for storing the content and the pre-listening rights object for the execution of the content before the purchase of the content; A determination unit which determines a request to execute the content according to an input signal input through an interface; And a content execution unit that executes the content by using the pre-listening right object when there is a request to execute the content.

According to the present invention, by using the DRM content stored in the user terminal and the right object for pre-listening, it is possible to provide a system and method for providing a content pre-listening service for a user to purchase the corresponding content after using the corresponding content. have.

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. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. 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 said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, the terms “… unit”, “… unit”, “module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. have.

In the specification, "content" refers to an application that can provide a user with various services such as multimedia, learning information, lectures, entertainment, news, and financial information such as games, cartoons, animations, and music.

In the specification, "preview service" refers to a service that allows a user to decide whether to purchase after using the content before purchasing the content.

In addition, the "pre-listening service" may be provided in various forms, and in the case of music content, it may be provided as a service for listening to music in advance, and in the case of game content, the game may be used in advance. It is a concept that collectively refers to a service that can use content in advance, such as providing a service.

In the specification, a "right object" refers to a right to decrypt and reproduce encrypted digital content, and includes definitions of content rights and constrains of rights, and rights to the rights object itself. It is included.

An example of the right to the content may be the reproduction of the content, and an example of the limitation may be the number of times of playing the content, the playing time, the playing period, and the like. In addition, the rights to the rights object itself may be moved or copied. That is, the right object having the right to move may be moved to another device or the like, and the right object having the copy right may be copied to the other device.

Digital Rights Management (DRM, hereinafter referred to as "DRM") is a technology for protecting and systematically managing digital content, preventing illegal copying of content and acquiring content rights objects. It provides a set of protection and management systems for the creation, distribution, and use of content.

1 is a diagram for explaining a DRM concept.

The content delivery server provides users with protected content using a specific encryption key (hereinafter, "content protected using a specific encryption key" is referred to as "DRM content") to protect the content from users who do not have access. to provide.

The user may receive the DRM content from the content providing server and execute the DRM content by using a "rights object" which is a right required to play the DRM content. At this time, the "right object" is encrypted, and the password of the encrypted right object may be interpreted using the "certificate". That is, the "DRM content" is controlled by the "right object", and the "right object" is controlled by the "certificate" stored in the terminal.

Now, a system and method for providing a content pre-listening service according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of an entire network for providing a content preview service according to an embodiment of the present invention.

According to FIG. 2, the entire network for providing a content preview service includes a user terminal 100, a base station 200, a mobile switching center 300, a content providing server 400, And a billing server 500, a DRM server 600, and a pre-listen management server 700. Each structure of FIG. 2 is demonstrated as follows.

The user terminal 100 receives and stores DRM content from the content providing server 400, and receives and stores a rights object for pre-listening from the DRM server 600. In addition, in response to the user's content pre-listening service request, the user terminal 100 executes the content by the received pre-listening right object. When the pre-listen rights object stored in the user terminal 100 is extinguished, the user terminal 100 inquires whether the user purchases the rights object, and purchases the rights object of the user from the DRM server 600 when the user requests the purchase. The request is transmitted and the rights object is received from the DRM server 600 and stored.

In this case, the user terminal 100 may be provided with a data service by accessing the Internet through a provided web browser, and the like, and may include a personal digital assistant (PDA), a cellular phone, a personal communication service (PCS) phone, and a GSM. (Global System for Mobile) phones, W-CDMA (Wideband CDMA) phones, CDMA-2000 phones, Wireless Broadband phones DMB (Digital Multmedia Broadcasting) phones and the like.

The base station 200 performs baseband signal processing, wired / wireless conversion, and transmission / reception of a wireless signal, and is a network termination device that is directly coupled to the user terminal 100 through a wireless channel. The base station 200 transmits the request of the user terminal 100 to the mobile switching center 300, and transmits the response of the mobile switching center 300 to the user terminal 100.

The mobile switching center 300 is connected to the content providing server 400 and the DRM server 600 through a mobile communication network. The mobile switching center 300 transmits the request of the user terminal 100 received through the base station 200 to the content providing server 400 or the DRM server 600, and the content providing server 400 or the DRM server ( The response from 600 is transmitted to the user terminal 100 through the base station 200.

The content providing server 400 stores various DRM contents and receives a request for downloading DRM contents including identification information from the user terminal 100. In this case, the identification information refers to identification information of content that the user wants to download. Thereafter, the content providing server 400 searches for the DRM content that the user wants to download based on the received identification information, and transmits the searched DRM content to the user terminal 100.

In addition, the content providing server 400 receives a user's right object purchase request from the DRM server 600, and transmits the content of the right object purchase request to the charging server 500. In this case, the rights object purchase request includes identification information of the DRM content that the user wants to use. When the content providing server 400 receives the purchase completion response from the charging server 500, the content providing server 400 stores the purchase contents of the DRM content corresponding to the identification information, and transmits the purchase completion response to the DRM server 600.

The billing server 500 receives a rights object purchase request including identification information from the content providing server 400 and performs billing on the use of the corresponding DRM content. At this time, the billing is billing for downloading the rights object of the corresponding DRM content.

Thereafter, the charging server 500 stores the rights object charging information and transmits the rights object purchase completion response to the content providing server 400.

The DRM server 600 receives a rights object download request or a rights object purchase request for pre-listening from the user terminal 100.

When the DRM server 600 receives a pre-listen right object download request from the user terminal 100, the DRM server 600 transmits the pre-listen right object download request to the pre-listen management server 700. Request the user's preview permission inquiry.

Subsequently, when receiving a response from the pre-listen management server 700 that the user has a pre-listen right, a rights object for the DRM content identification information included in the rights object download request is generated, and the generated rights object is generated by the user terminal. Send to 100.

At this time, the generated rights object is a rights object for pre-listening, and includes a limitation on pre-listening. In other words, the pre-listening right object is a content of the pre-listening service, and may include limitations such as the number of times of reproduction of the content, a reproduction time, a reproduction period, and the like. If the limitation is exceeded, the pre-listening right object is destroyed.

When the DRM server 600 receives the rights object purchase request from the user terminal 100, the DRM server 600 transmits the rights object purchase request of the user to the content providing server 400. Subsequently, the terminal 100 receives a purchase completion response from the content providing server 400, generates a rights object of the DRM content corresponding to the DRM content identification information included in the rights object purchase request, and generates the generated rights object in the user terminal 100. To send.

The pre-listen management server 700 receives a pre-listen right inquiry request from the DRM server 600, and searches for pre-listed right information set for pre-listed DRM content based on the DRM content identification information. Also, the pre-listen service usage information of the user who requested the pre-listening authority is searched.

Thereafter, the pre-listen management server 700 determines whether the user has a right to use the pre-listen service based on the retrieved pre-listen right information and the user's usage information. If the user has a pre-listen right, the pre-listen management server 700 transmits the right present response to the DRM server 600.

For example, the existence of the pre-listening authority may be performed in the following manner. If the DRM content requested by the user is content having a limit of the number of times that the pre-listen service can be used, the pre-listen management server 700 searches for the limit setting information of this number. In addition, the pre-listen management server 700 searches the user's usage information to see if the user previously used the pre-listen service. Thereafter, the pre-listen management server 700 transmits the authority existence response to the DRM server 600 when the number of times of use of the user is smaller than the set number of times.

3 is a block diagram of a DRM server 600 according to an embodiment of the present invention.

According to FIG. 3, the DRM server 600 includes a transceiver 610, a controller 620, a rights object generator 630, and a rights object information storage 640. Each structure of FIG. 3 is demonstrated as follows.

The transceiver 610 receives a rights object download request or a rights object purchase request for pre-listening from the user terminal 100. The transmitter / receiver 610 transmits the contents of the pre-listening rights object download request to the pre-listening management server 700 and requests the user to listen to the pre-listening authority, or transmits the rights object purchase request of the user to the content providing server 400. do. In addition, the transceiver 610 transmits a rights object for pre-listening or a rights object purchased by the user to the user terminal 100.

When the control unit 620 receives the right object download request for pre-listening from the user terminal 100 through the transceiver 610, the control unit 620 transmits the content of the pre-listening rights object download request to the pre-listen management server 700, Request the user's preview permission inquiry.

Then, when receiving a response from the pre-listen management server 700 that the user has a pre-listening authority, the control unit 620 is the rights object generation unit 630 for the DRM content identification information included in the rights object download request The right object is controlled to be generated, and the transceiver 610 controls to transmit the generated right object to the user terminal 100. In addition, the controller 620 stores the generated rights object in the rights object information storage unit 640.

In addition, when receiving a rights object purchase request from the user terminal 100 through the transceiver 610, the controller 620 transmits the rights object purchase request of the user to the content providing server 400.

Then, when the purchase completion response from the content providing server 400, the control unit 620 generates a rights object of the DRM content corresponding to the DRM content identification information included in the rights object purchaser 630 in the rights object purchase request. The control unit 610 controls the transmission and reception unit 610 to transmit the generated right object to the user terminal 100. In addition, the controller 620 stores the generated rights object in the rights object information storage unit 640.

The rights object generator 630 generates a rights object of the DRM content corresponding to the DRM content identification information.

The rights object information storage unit 640 stores rights object information on the DRM content.

4 is a block diagram of a pre-listen management server 700 according to an embodiment of the present invention.

According to FIG. 4, the pre-listen management server 700 includes a transceiver 710, a processor 720, and an information storage unit 730, and the information storage unit 730 includes a pre-listen permission setting storage unit 731. And a user information storage unit 732. Each structure of FIG. 4 is demonstrated as follows.

The transceiver 710 receives a pre-listen authority inquiry request from the DRM server 600, and transmits a pre-listen authority present response to the DRM server 600.

The processor 720 may pre-listen the pre-listen right information set for the DRM content based on the content identification information included in the authority inquiry request received from the DRM server 600 through the transceiver 710. The search is performed using the setting storage unit 731. In addition, the processor 720 searches for the pre-listen service usage information of the user who has requested the pre-listen permission by using the user information storage unit 732.

Thereafter, the processor 720 determines whether the user has a right to use the pre-listening service based on the retrieved pre-listening right information and the user's usage information. If the user has a pre-listening right, the processor 720 controls the transceiver 710 to transmit the authority present response to the DRM server 600.

The information storage unit 730 stores information for determining whether to listen in advance, and the information storage unit 730 includes a pre-hearing permission setting storage unit 731 and a user information storage unit 732.

The pre-listening authority setting storage unit 731 stores pre-listening authority information set for the DRM content. In this case, the pre-listening authority setting may be setting contents such as the number of available times of the pre-listening service or other limited matters. The user information storage unit 732 stores a user's preview service usage history.

Now, a method of providing a content pre-listening service according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5 is a schematic flowchart of a method of providing a content pre-listening service according to an embodiment of the present invention.

In the content preview service according to the embodiment of the present invention, the user terminal 100 stores the DRM content and the right object for preview (S101). When the user terminal 100 receives the content execution request from the user, the user terminal 100 determines whether a rights object exists (S102). If the rights object exists, the user terminal 100 executes the content by the rights object for listening in advance (S104). On the other hand, if the rights object does not exist, the user terminal 100 asks the user whether to purchase the rights object. Thereafter, the user terminal 100 determines whether a user purchases a rights object (S105).

If the user purchased the rights object, the user terminal 100 stores the purchased rights object (S106). In addition, when there is a request for executing content by the user, content is executed by the purchased right object stored in the user terminal 100 (S107).

The content pre-listening service according to an embodiment of the present invention provides a pre-listening service using a pre-listening right object stored in the user terminal 100 without providing a pre-listening service by a streaming method. That is, in order to provide a pre-listening service, the user terminal 100 stores a pre-listening right object.

There are two ways in which the user terminal 100 stores a pre-listening right object. The first method is a case in which the DRM content and the pre-listening rights object are stored in the release stage of the user terminal 100. For example, when a mobile phone using the name of a specific singer is released, the mobile phone is loaded with a rights object for providing a DRM content for the song of the singer and a pre-listening service for the DRM content.

In a general method of playing content, a user terminal stores DRM content, a rights object for decrypting DRM content, and a user- or device-specific certificate for controlling the rights object, and executes the content by using the same.

However, in the first method of storing the DRM content and the right object for pre-listening at the terminal release stage, the terminal at release stage stores the manufacturer's certificate. The second method of storing the pre-listening right object by the user terminal 100 is to download and store the DRM content and the pre-listening right object in the user terminal 100. The second method is described in FIG.

6 is a diagram illustrating an example of a method of storing DRM content and a pre-listening right object in the user terminal 100.

The user terminal 100 transmits a DRM content download request including the identification information of the content that the user wants to download to the content providing server 400 (S201). The content providing server 400 searches for the DRM content that the user wants to download based on the received identification information (S202), and transmits the retrieved DRM content to the user terminal 100 (S203). Thereafter, the user terminal 100 stores the DRM content received from the content providing server 400 (S204).

In addition, the user terminal 100 transmits a pre-hearing rights object download request for using the pre-listening service to the DRM server 600 (S205). In this case, the pre-listen right object download request includes identification information of the corresponding content for using the pre-listen service.

The DRM server 600 receiving the pre-listen right object download request from the user terminal 100 transmits the content of the pre-listed right object download request to the pre-listen management server 700 and transmits the user's pre-listen permission inquiry. Request (S206).

The pre-listen management server 700 receives a pre-listen right inquiry request from the DRM server 600, and searches for pre-listed right information set for pre-listed DRM content based on the DRM content identification information (S207). ). In addition, the pre-listen management server 700 retrieves the pre-listen service usage information of the user who requested the pre-listen permission (S208).

Thereafter, the pre-listening management server 700 determines whether the user has a right to use the pre-listening service based on the retrieved pre-listening authority information and the user's usage information (S209). If the user has a pre-listen right, the pre-listen management server 700 transmits the authority present response to the DRM server 600 (S210).

When receiving a response from the pre-listen management server 700 that the user has a pre-listen right, the DRM server 600 generates a rights object for the DRM content identification information included in the rights object download request (S211). The generated right object is transmitted to the user terminal 100 (S212). At this time, the generated rights object is a rights object for pre-listening, and includes a limitation on pre-listening. Thereafter, the user terminal 100 stores a pre-listening right object received from the DRM server 600 (S214).

7 is a diagram illustrating a control flow for purchasing a rights object according to an embodiment of the present invention.

The user terminal 100 receives a content execution request from the user (S301), and determines whether a right object exists (S302). At this time, the rights object is a rights object for pre-listening or a rights object purchased by the user.

If a rights object exists in the user terminal 100, the user terminal 100 executes the content using the rights object stored in the user terminal (S303).

On the other hand, when the rights object does not exist in the user terminal 100, the user terminal 100 requests the user to input whether to purchase the rights object (S304), and determines whether the user purchases the rights object (S305).

When a user requests to purchase a rights object, the user terminal 100 transmits a rights object purchase request including content identification information that the user wants to purchase to the DRM server 600 (S306), and the DRM server 600 receives the DRM server 600. The right object purchase request is transmitted to the content providing server 400 (S307). In addition, the content providing server 400 transmits the received rights object purchase request to the charging server 500 (S308).

The billing server 500 receiving the right object purchase request including the identification information performs billing on the use of the corresponding DRM content (S309). In this case, the charging is charging for the download of the rights object of the corresponding DRM content. Thereafter, the charging server 500 stores the rights object charging information (S310), and transmits the rights object purchase completion response to the content providing server 400 (S311).

The content providing server 400 receiving the purchase completion response from the charging server 500 stores the purchase contents of the DRM content corresponding to the identification information as user information (S312), and sends the purchase completion response to the DRM server 600. To transmit (S313).

Receiving the purchase completion response from the content providing server 400, the DRM server 600 generates a rights object of the DRM content corresponding to the DRM content identification information (S314), and generates the generated rights object to the user terminal 100. Transfer (S315). In addition, the DRM server 600 stores the generated rights object information (S316).

The user terminal 100 receives and stores the rights object from the DRM server 600 in response to the rights object purchase request (S317).

Thereafter, the user terminal 100 stores the purchased rights object, and while the rights object exists, the user terminal 100 may execute the content by using the purchased rights object.

The embodiments of the present invention described above are not implemented only through the apparatus and the method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded. Implementation may be easily implemented by those skilled in the art from the description of the above-described embodiments.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a diagram for explaining a DRM concept.

2 is a block diagram of an entire network for providing a content preview service according to an embodiment of the present invention.

3 is a block diagram of a DRM server 600 according to an embodiment of the present invention.

4 is a block diagram of a pre-listen management server 700 according to an embodiment of the present invention.

5 is a schematic flowchart of a method of providing a content pre-listening service according to an embodiment of the present invention.

6 is a diagram illustrating an example of a method of storing DRM content and a pre-listening right object in the user terminal 100.

7 is a diagram illustrating a control flow for purchasing a rights object according to an embodiment of the present invention.

Claims (15)

In the method of the user terminal to provide a content preview service, (a) storing a content and a pre-listening rights object for execution of the content before purchase of the content; (b) determining a request to execute the content; And (c) if there is a request to execute the content, executing the content using the pre-listen right object; How to provide content preview service. The method of claim 1, In step (a), Transmitting a content download request including identification information about the content to a server providing the content; Receiving the content from a server providing the content; And Storing the received content; How to provide content preview service. The method of claim 1, In step (a), Transmitting, to a server managing a rights object, a pre-listening rights object download request including identification information of the content; Receiving the pre-listening rights object from a server managing the rights object; And Storing the received rights object. How to provide content preview service. The method of claim 1, In step (c),  If the pre-listening right object exists, executing the content using the pre-listening right object; How to provide content preview service. The method of claim 1, In step (c),  If the pre-listening rights object does not exist, executing the content using the purchased rights object; How to provide content preview service. The method of claim 5, The step of executing the content, Asking a user whether to purchase a rights object for the content; Determining whether a user purchases a rights object; If the user purchases a rights object, storing the rights object for the content; And And executing the content by using the stored right object. The method of claim 6, Storing the rights object for the content, Transmitting a rights object purchase request including identification information about the content to a server managing the rights object; Receiving a purchased rights object from a server managing the rights object; And Storing the received rights object. How to provide content preview service. In a method for providing a content pre-listening service to a user terminal by a server managing a pre-listening rights object, (a) receiving a download request of a pre-listening right object for execution of the content from a user's terminal before purchase of the content; (b) creating a rights object for preview; And (c) transmitting a content pre-listening service to the terminal of the user. The method of claim 8, In step (b), (i) querying the user's pre-listening authority; (ii) if the user has a pre-listen right, creating the pre-listen right object; And and (iii) storing the pre-listening rights object created in step (ii). The method of claim 9, In step (i), Retrieving a pre-listening right set for the content; Retrieving pre-listening usage information of the user; And Determining the pre-listening right of the user based on the searched pre-listening right and the searched user information. How to provide content preview service. In the system for providing a content preview service to the user terminal, A content providing server providing content to a user terminal; A digital rights management server providing a pre-listening right object for execution of the content before purchase of the content to the user terminal; And A pre-listen management server for determining whether to provide a pre-listen right object to the user from the digital rights management server; Content preview service providing system. The method of claim 11, The digital rights management server, A rights object generation unit generating the rights object for pre-listening; And When receiving a download request of a pre-listening right object from a user terminal, requesting the pre-listening authority inquiry to the pre-listening management server, and when receiving the pre-listening authority existence response of the user from the pre-listening management server And a control unit which controls the rights object generation unit to generate the rights object for pre-listening. The method of claim 12, The digital rights management server, The apparatus may further include a rights object information storage unit configured to store rights object generation information for pre-listening for the user. Content preview service providing system. The method of claim 13, The pre-listen management server, A pre-listening authority setting storage unit for storing pre-listening authority information set for the content; And Contents pre-listening service providing system comprising a user information storage unit for storing the user's preview service usage history. In the terminal providing a content preview service, A storage unit for storing content and a pre-listening right object for executing the content before purchase of the content; A determination unit which determines a request to execute the content according to an input signal input through an interface; And If there is a request to execute the content, including a content execution unit for executing the content by using the pre-listening rights object; Terminal for providing content preview service.

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