KR20070119363A - Media file player and advertisement system and method using the same - Google Patents

Abstract

A media file player, and an advertisement system and a method using the same are provided to enhance advertisement effect by displaying an interactive advertisement and a media file at the same time when digital media files are replayed using a DRM(Digital Rights Management) scheme. An advertisement system using a DRM(Digital Rights Management) scheme includes a media file replaying part(100) and an advertisement server(110). The media file replaying part extracts advertisement data information from the metadata of digital media file packages and displays decoded digital media files and advertisement data at the same time in a display unit. The advertisement server includes advertisement data corresponding to the advertisement data information and transmits the advertisement data to the media file replaying part.

Description

MEDIA FILE PLAYER AND ADVERTISEMENT SYSTEM AND METHOD USING THE SAME}

1 is a block diagram illustrating a DRM system according to the prior art.

2 is a block diagram illustrating an advertising system according to the present invention.

3 is a block diagram showing a media file playing apparatus according to the present invention;

4 is a flowchart illustrating an advertisement method according to the present invention.

The present invention relates to a media file reproducing apparatus and an advertisement system and method using the same. In particular, a media file capable of simultaneously displaying an interactive advertisement on a screen on which a media file is played when playing a digital media file packaged using DRM. The present invention relates to a playback device and an advertising system and method using the same.

Digital content, unlike analog content, retains the same quality as the original after several copies. When digital content having such characteristics meets the Internet communication media, copies of the same quality as the original can be propagated infinitely rapidly. This is why content owners, who have invested so much capital and effort, are reluctant to digitize their content and commercialize it on the Internet. This climate eventually leads to disadvantages in that content consumers (users) cannot receive high quality content.

Currently, the method used to protect digital content provided by the Internet is a content access control method, which allows users to sign up for a content sale or service provider and access the content after paying for the content service price. In addition, the billing authentication method is used in conjunction with the login method to secure the content. However, such a content access control method requires that a user pays a fee and secures the content once the digital file is stored on the hard disk of the personal computer (Personal Computer) at the content service site. When copying a downloaded file to a third party, there is a problem that the content protection device no longer works.

In order to secure this problem, DRM (Digital Rights Management) technology has been proposed. DRM technology first encodes content into a form that can be DRM packaged. The encoded content is encrypted using an encryption key. Users can copy and distribute this encrypted content at will, but a decryption key is necessary to use the encrypted content. In addition, the player is required to play the decrypted content. The player plays a role in controlling the use of digital content in addition to the decoding function. That is, the user can use the content only within the content usage right concluded with the content provider at the time of downloading the content.

The DRM system is described below.

1 is a block diagram illustrating a DRM system according to the prior art.

Referring to FIG. 1, the digital rights management (DRM) system encrypts digital content by using an encryption key and then encrypts metadata of the encryption key and the encrypted digital content in order to allow copying of the digital content and prevent illegal use. The packager 12 of the content provider / retailer for registration and the metadata are registered and managed, and encrypted with the packager 12 that is billed in connection with a payment gateway 14. Clearinghouse (license issuing device) 11 for issuing and managing a license to solve the digital content, and upon requesting the user's content playback, examines the user's license and issues a license to the clearing house 11 A content player (16) for decrypting the corresponding digital content provided by the content provider / seller using the issued license. Include.

The packager 12 includes an encoded file (content), content metadata containing various information (title, artist name, etc.), content providing / seller metadata containing information of the content providing / seller, and After packaging the encryption key required for content packaging as an input value, the packaged content registration file required for registering the packaged content and package as the DRM clearing house 11 is exported.

The packager 12 adds a header to the content through the encoder, which includes content metadata, information related to encryption / decryption, and a link to a website where licenses for decryption keys and usage rights of the packaged content ( Uniform Resource Locator (URL) information, consisting of a set of metadata that can contain information values necessary for operation in the DRM system.

When the content player 16 requests the user to play the content, the content player 16 examines the user's license, requests the clearing house 11 to issue a license, and uses the issued license to provide the web server of the content provider / seller and the packaged content DB ( Decode the corresponding digital content provided by the 13 only in the terminal (PC) that is provided.

Hereinafter, a digital rights management (DRM) method according to the prior art will be described in detail with reference to FIG. 1.

The digital rights right (DRM) system is largely comprised of a DRM clearing house (license issuing device) 11, a packager 12, and a content player 16 with a DRM function.

First, a DRM service applicant (content author, provider / seller) who wants to receive digital content copyright management and protection service registers with the DRM clearing house 11 using a web user interface (1).

After that, the DRM clearing house manager processes the registration of the DRM service applicant and sends a confirmation email (2). At this time, a variety of information is delivered to the reply mail, the message sign key (Sign Key) used to sign the unique ID of the DRM service applicant and all messages sent between the DRM clearing house 11 from the DRM service applicant in the future Contains information such as value, packager 12 that can package DRM content, website address, and DRM service usage guide. In addition, all transmission messages have a text format and more preferably use Extensible Markup Language (XML), but are not limited thereto.

Next, the DRM service applicant installs the packager 12 according to the procedure sent by e-mail, and then packages all contents to be sold using the DRM service through the packager 12 using the displayed information of FIG. 2. (3).

Subsequently, the DRM service applicant (content author, content provider / seller) registers the packaged content in the clearing house 11 (4). This content registration procedure is performed as follows. At this time, the packaged content is placed in the content database 13 of the content provider / seller, and only the package content registration file (see FIG. 2) is signed with a message sign key and then transmitted to the clearing house 11. Here, the method used for encrypting and decrypting content uses a symmetric key method. In other words, the same key used for encryption is also used for decryption. Therefore, the key value used for encryption is sent to the clearing house 11 using the message signing key, and the key used for encryption is again used for decryption of the content when a license issuance request is requested from the content user (player 16).

Thereafter, the content user searches for the desired content on the site of the content provider / seller and makes a purchase request (5). In this case, the contract with the content provider / seller is required to determine the right to use the content, that is, how many times it will be played or how long (period: unlimited, number of days) to view, and whether to allow copying to another medium (CD or portable device). Tighten. In this case, the charge for the content purchase request may impose a usage fee on the content user in the DRM clearing house 11 having a function of linking with the content provider / seller site itself or the financial institution 14 (6-1, 6). -2). Smaller content providers / sellers can earn more from small capital given to use the financial settlement functions of the DRM clearing house 11 rather than have their own financial settlement and settlement functions, and the DRM clearing house 11 finances You can make a profit by adding a commission from settlement.

Thereafter, the content user pays with her preferred payment method (7). Examples include credit cards, bank transfers, and cell phone payments.

Then, the financial institution 14 notifies the content provider / seller and the DRM clearing house 11 of the payment result of the content user (8-1, 8-2).

Next, the content provider / seller (shopping mall) notified of the payment processing result from the financial institution 14 requests the license issuance processing to the DRM clearing house 11 (9). At this time, the information is transmitted together with the content usage rights, content ID, and the user's unique information using the PC or operating system to play the content.

In response, the DRM clearing house 11 sends the license to the content user (consumer) (10). Then, the content provider / seller sends the content to the content user (consumer) (11). Here, the license delivery process 10 may be performed before the content delivery process 11.

Subsequently, the DRM clearing house 11 periodically sends a transaction statement to the content provider / seller 12. In addition, if necessary, the content provider / seller may access the DRM clearing house 11 to check his / her registration status, content registration contents, transaction details, and the like (13).

The DRM system according to the prior art can restrict the playback of the user according to the license, but there is a problem that various advertisements cannot be performed.

In order to solve this problem, an interactive advertisement is displayed simultaneously or separately on a screen on which a media file is played when a digital media file packaged using DRM is displayed, thereby enabling effective advertisement using a conventional DRM system. And it aims to provide an advertising system and method using the same.

According to an aspect of the present invention, there is provided an advertisement system using a DRM, comprising: media file reproduction means for extracting advertisement data information from metadata of the digital media file package using the DRM and outputting the decoded digital media file through a display device; And an advertisement server which holds advertisement data corresponding to the advertisement data information and transmits the advertisement data to the media file reproducing means in response to a request of the media file reproducing means, wherein the media file reproducing means includes the advertisement data. Receiving and displaying the advertisement data on the display device when the decoded digital media file is played.

The advertisement system using the DRM according to the present invention includes a license server for holding a license key for decrypting the digital media file package, and for issuing the license key in response to a request of the media file playing means. The apparatus may further include a payment server configured to perform a payment for a license regarding a content providing server or a digital media file package.

The media file playing means may include: a decoding module for decoding the digital media file and metadata from the digital media file package; An advertisement playback module configured to receive advertisement data according to the advertisement data information extracted from the metadata and to display the advertisement data on the display device; And a viewer module for outputting the decoded digital media file through the display apparatus.

Here, the advertisement playback module may be provided in a plug-in form in the media file playback means.

The advertisement method using the DRM according to the present invention comprises the steps of: (a) decoding the metadata and the digital media file included in the digital media file package using the DRM; (b) extracting advertisement data information from the metadata; (c) accessing an advertisement server having advertisement data corresponding to the advertisement data information and receiving the advertisement data; And (d) outputting the decoded digital media file and the received advertisement data to a display device.

Here, the step (a) may include: holding a license key for decrypting the digital media file package and accessing a license server for issuing the license key at the request of the media file playing means; And decoding the metadata and the digital media file according to the license information received from the license server.

A media file playing apparatus for playing a digital media file package using DRM according to the present invention receives a license key from a license server and decrypts the digital media file and metadata from the digital media file package according to the license key. module; An advertisement playback module configured to receive advertisement data from an advertisement server according to the advertisement data information extracted from the metadata and to display the advertisement data on a display device; And a viewer module for outputting the decoded digital media file through the display apparatus.

Here, the advertisement playback module may be provided in the form of a plug-in to the media file playback means.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

2 is a block diagram illustrating an advertisement system according to the present invention.

Referring to FIG. 2, the advertisement system using the DRM according to the present invention includes a media file playing means 100 and an advertisement server 110, and further includes a license server 120 or a content providing server 130. It may include.

The media file reproducing means 100 extracts the advertisement data information (for example, the URL of the advertisement data or the interactive advertisement information related to the advertisement target) from the metadata of the digital media file package using the DRM, and the decoded digital media file. Is output through the display apparatus 300. In addition, the media file reproducing means 100 receives the advertisement data from the advertisement server 110 and displays the advertisement data together with the digital media file on the display device when the decoded digital media file is reproduced.

The media file reproducing means 100 provides an advertisement related to the advertisement data to the user at the request of the user who views the advertisement data output through the display apparatus. That is, a user who views the advertisement data output through the display device may request an advertisement related to the advertisement data by clicking on the advertisement which is useful to the user. When such a request is made, the media file playing means 100 may output an advertisement related to the advertisement data by overlaying the advertisement on the digital media file that is playing the advertisement, or execute a web browser to access the advertiser's website. In addition, the advertisement data may be interactive advertisement data. In this case, the advertisement data may provide information related to the object of the advertisement according to the interaction with the user.

The digital media file package includes metadata including digital media files such as WMA, MP3, AVI, WMV and the like, information about digital media files, information on content providers / sellers, license server URLs, advertisement data information, and the like. Among them, the advertisement data information may be stored in a separate area or in an area in which a license server URL is stored. Here, the advertisement data information is preferably a URL of the advertisement data.

The advertisement server 110 holds advertisement data corresponding to the advertisement data information, and transmits the advertisement data to the media file reproduction means 100 in response to a request of the media file reproduction means 100. The advertisement data may be stored in a database, and the advertisement server 110 may transmit a customized advertisement to the media file playing means 100 according to the contents of the digital media file or the user. For example, if there is information about a living standard, a job, income, etc. of a user, appropriate advertisement data may be transmitted according to this information. In addition, when the content of the digital media file is a movie about a vehicle, advertisement data about the vehicle may be transmitted.

The license server 120 holds a license key for decrypting the digital media file package, and issues a license key at the request of the media file reproducing means 100.

The content providing server 130 holds one or more digital media file packages, and transmits them to a user's PC or the like when requested by the user.

Although not shown, the advertisement system using the DRM according to the present invention may further include a payment server for making a payment for a license purchase in order to play the downloaded digital media file package.

Hereinafter, the media file reproducing apparatus according to the present invention will be described in detail.

3 is a block diagram showing a media file reproducing apparatus according to the present invention.

Referring to FIG. 3, the media file playing apparatus according to the present invention includes a decoding module 200, an advertisement playing module 210, and a viewer module 220.

The decryption module 200 decrypts the digital media file and the metadata from the digital media file package. That is, when the license received from the license server is valid, the digital media file and the metadata are decoded from the digital media file package.

The advertisement playing module 210 receives the advertisement data from the advertisement server according to the advertisement data information extracted from the meta data and outputs the advertisement data to the display apparatus 300. The advertisement playback module 210 may be provided in a plug-in form in the media file playback means 100. For example, if a user uses a Windows media player, installing the advertisement playback module 210 as a plug-in enables the application of the system and method according to the present invention. In addition, the user may provide interactive advertisement information related to the advertisement data according to a user's request for viewing the advertisement data output through the display apparatus 300 of the advertisement reproduction module 210. The advertisement data may be overlaid on the screen on which the digital media file is played.

The viewer module 220 outputs the decrypted digital media file through the display apparatus 300. That is, the viewer module 220 decodes the digital media file using various codecs and outputs the digital media file to the display apparatus 300.

Hereinafter, the advertising method using the DRM according to the present invention will be described in detail.

4 is a flowchart illustrating an advertisement method according to the present invention.

Referring to FIG. 4, the content provider packages the digital media file generated through encoding or the like with various metadata (S100). The packaged digital media file package includes metadata such as information about the digital media file, information about the content provider / seller, information about the DRM, license server URL, and advertisement data information along with the digital media file. When the digital media file is encrypted, the metadata can be encrypted with the digital media file or packaged unencrypted.

The digital media file package generated by the content provider is stored in the content providing server (S110).

The user accesses the content server, selects the desired digital media file package, and downloads it (S120). The user may pay for the digital media file package at the time of download through the payment server or at the time of playback. This may vary according to the policy of the content provider.

When the download is complete, the user attempts to play the downloaded digital media file package using the digital media playback means according to the present invention. If payment is not made at the time of downloading, the digital media reproducing means requests payment from the user, and upon completion of the payment, accesses the license server to obtain a license key. The decryption module included in the digital media playback means decrypts the digital media file and the meta data from the digital media file package using the received license key (S140). When metadata is packaged without encryption, it is obvious that decryption of metadata is unnecessary.

The digital media reproducing means extracts the advertisement data (for example, the URL of the advertisement data or the interactive advertisement information related to the advertisement object) from the metadata (S150), and then the advertisement server 110 having the advertisement data corresponding to the advertisement data URL. ) To receive the advertisement data (S160).

The digital media reproducing means outputs the decoded digital media file and the received advertisement data to the display apparatus 300 (S170). Here, the advertisement data may be output by being overlaid on the screen on which the digital media file is played.

The user views the advertisement data output through the display apparatus 300. When a user sees an advertisement useful to him, he can click on it to request an advertisement related to the advertisement data. If such a request is made, the advertisement may be overlaid on the digital media file being played, or the web browser may be executed to access the advertiser's website. Ads are preferably provided interactively.

The media file playing apparatus and the advertisement system and method using the same according to the present invention have the following advantages.

1. It is possible to provide effective advertising without changing the existing DRM system.

2. In using content provided for a fee, when a user watches an advertisement, the content may be provided free of charge or at a reduced price.

3. Advertisers who provide products or services related to the content of media files viewed by a user may provide advertisements for their products or services at a small cost.

4. Since it is possible to provide a media file playing apparatus according to the present invention in the form of a plug-in, it can be easily integrated into an existing media player, so that an operator providing an advertising system and method according to the present invention needs to develop a new player. Development costs can be minimized.

5. The user can watch the paid content for free or at a low price without paying a great cost simply by watching the advertisement.

Claims (29)

In the advertising system using DRM, Media file reproduction means for extracting advertisement data information from metadata of the digital media file package using the DRM and outputting the decoded digital media file through a display device; And An advertisement server which holds advertisement data corresponding to the advertisement data information and transmits the advertisement data to the media file reproducing means at the request of the media file reproducing means; Wherein the media file reproducing means receives the advertisement data and displays the advertisement data on the display device when the decoded digital media file is reproduced. The method of claim 1, And a license server for holding a license key for decrypting the digital media file package and issuing the license key at the request of the media file playing means. The method of claim 1, And the media file reproducing means provides an advertisement related to the advertisement data to the user according to a request of a user viewing the advertisement data output through the display apparatus. The method of claim 3, The advertisement system related to the advertisement data is an advertiser's web site. The method of claim 3, The advertisement associated with the advertisement data is overlaid on the screen on which the digital media file is played. The method of claim 1, The metadata includes information about the digital media file, information about the content provider / seller, information about DRM, information about a license server, and advertisement data information. The method of claim 1, The advertisement data information is an advertisement system using DRM, characterized in that the URL of the advertisement data. The method of claim 1, And the advertisement data is overlaid on a screen on which the digital media file is played. The method of claim 1, And the advertisement data is interactive advertisement data. The method of claim 9, The interactive advertisement data provides information related to the object of the advertisement in accordance with the interaction with the user. The method of claim 1, The media file playing means A decoding module for decoding the digital media file and metadata from the digital media file package; An advertisement playback module configured to receive advertisement data according to the advertisement data information extracted from the metadata and to display the advertisement data on the display device; And A viewer module for outputting the decoded digital media file through the display device. Advertising system using a DRM, characterized in that it comprises a. The method of claim 11, The advertisement playing module is an advertisement system using DRM, characterized in that the media file playing means is provided in a plug-in form. The method of claim 1, Advertising system using a DRM further comprises a content providing server for providing the digital media file package. The method of claim 1, The system of claim 1, further comprising a payment server for performing a payment for the license for the digital media file package. The method of claim 1, The advertisement data transmitted to the media file playing means The advertisement data information retained by the advertisement server is advertisement data related to contents of the digital media file or advertisement data related to user information for viewing the digital media file. In the advertising method using DRM, (a) decoding the metadata and the digital media file included in the digital media file package using the DRM; (b) extracting advertisement data information from the metadata; (c) accessing an advertisement server having advertisement data corresponding to the advertisement data information and receiving the advertisement data; And (d) outputting the decoded digital media file and the received advertisement data to a display device; Advertising method using a DRM, characterized in that it comprises a. The method of claim 16, Step (a) is Holding a license key for decrypting the digital media file package and connecting to a license server that issues the license key at the request of the media file playing means; And Decrypting the metadata and the digital media file according to the license information received from the license server Advertising method using a DRM, characterized in that it comprises a. The method of claim 16, Packaging the digital media file, content metadata including information about the digital media file, content provider / seller metadata including information about the content provider / seller and metadata including advertisement data information; Advertising method using a DRM characterized in that it further comprises. The method of claim 16, The method of claim 1, further comprising the step of receiving the digital media file package from a content providing server. The method of claim 16, The step (d) comprises the step of providing an advertisement associated with the advertisement data to the user at the request of the user viewing the advertisement data output through the display device. The method of claim 20, The advertisement method associated with the advertisement data is an advertiser's web site. The method of claim 16, The advertisement data information is an advertisement method using DRM, characterized in that the URL of the advertisement data. The method of claim 16, Step (d) And overlaying the advertisement data on a screen on which the digital media file is played. The method of claim 16, The advertisement data includes one or more interactive advertisement information related to the advertisement target. The method of claim 26, The step (d) comprises providing interactive related information related to the advertisement target according to a user's selection. In the media file playback apparatus for playing a digital media file package using DRM, A decryption module for receiving a license key from a license server and decoding the digital media file and metadata from the digital media file package according to the license key; An advertisement playback module configured to receive advertisement data from an advertisement server according to the advertisement data information extracted from the metadata and to display the advertisement data on a display device; And A viewer module for outputting the decoded digital media file through the display apparatus Media file playback device comprising a. The method of claim 26, The advertisement reproduction module The media file reproduction apparatus according to claim 1, wherein the user provides interactive advertisement information related to the advertisement data in response to a request of a user viewing the advertisement data output through the display apparatus. The method of claim 26, And the advertisement playing module is provided in a plug-in form in the media file playing means. The method of claim 26, And the advertisement playback module overlays the advertisement data on a screen on which the digital media file is played.

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