KR20030016151A - Method for protecting a copyright of contents - Google Patents

Abstract

PURPOSE: A method for protecting CONSTITUTION: A mobile communication terminal connects with a WAP(Wireless Application Protocol) server through a wireless network(S201), and the WAP server displays a menu selection page on a display window(S202). The WAP server decides whether a user selects

Description

Copyright protection method of content {METHOD FOR PROTECTING A COPYRIGHT OF CONTENTS}

The present invention relates to a wireless Internet service, and more particularly, to a copyright protection method of content that prevents an unlimited copy or reproduction of copyright content transmitted by a user through a wireless Internet service.

Currently, the wireless network is growing faster than any other media (radio, TV, cable broadcasting, etc.) due to the increase in the number of users using the wireless communication, and the future development is highly appreciated. The medium of such a wireless communication network has the potential to cause a huge demand market, thereby downloading various contents such as picture friends and music files using the wireless communication network.

Recently, with the development of advanced technologies such as real-time video transmission technology, location tracking, and voice recognition, various high quality multimedia (VOD content) services can be provided through a wireless network. A mobile communication terminal capable of providing a multimedia service through such a wireless network is a terminal for IMT-2000, which is a third generation mobile communication terminal capable of implementing high-speed wireless multimedia service. The mobile communication terminal is equipped with a WAP Browser and a Video On Demand (VOD) player to download and play multimedia related data.

Most of the high quality multimedia contents data downloaded by the mobile communication terminal through the wireless network are copyrighted.

However, such copyrighted content has a problem of being copied or reproduced indefinitely regardless of copyright after being downloaded by one person.

An object of the present invention is to solve the above problems, and when the user requests copyright content, and transmits the reproduction limit number, which is detailed information on the copyright content, to the mobile communication terminal, and the mobile communication terminal stores the reproduction limit number of times. To provide a content copyright protection method that can prevent the unlimited copy and playback of copyright content using.

Another object of the present invention is to transmit a reproduction period, which is detailed information on copyright content, to a mobile communication terminal when a user requests copyright content, and the mobile communication terminal prevents unlimited copying and reproduction of copyright content by using the stored reproduction period. To provide a copyright protection method for content.

In order to achieve the above object, the present invention provides a copyright protection method for content downloaded to a mobile communication terminal through a wireless network, wherein the mobile communication terminal has a number of restrictions on the reproduction of the copyright content according to a user's copyright content request. And receiving the copyrighted content through the wireless network, wherein the mobile communication terminal generates the reproduction information according to a user's reproduction request for the copyrighted content, and compares the reproduction information with the number of reproductions of the copyrighted content. Determining whether the copyright content is reproducible, and stopping reproduction of the copyright content or reproducing the copyright content based on a result of the determination.

In order to achieve the above object of the present invention, the present invention provides a copyright protection method for content downloaded to a mobile communication terminal through a wireless network, wherein the mobile communication terminal is assigned to the copyright content according to a user's copyright content request. Receiving the number of playback restrictions and the copyright content through the wireless network, the mobile communication terminal according to the user's request for the reproduction of the copyright content time information of the mobile communication terminal and the reproduction period of the copyright content; And comparing the copyright contents with each other and determining whether the copyright contents can be reproduced, and stopping the reproduction of the copyright contents or reproducing the copyright contents based on the determination result.

1 is a block diagram showing a wireless Internet service system applied to the present invention,

2 is a flowchart illustrating a copyright protection method for content transmitted through the wireless Internet according to an exemplary embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

100: mobile communication terminal 150: wireless network

200: swap server 201: VOD server

202: content database

There may be a plurality of embodiments of the present invention, and a preferred embodiment will be described in detail below with reference to the accompanying drawings. Those skilled in the art will be able to better understand the objects, features and advantages of the present invention through this embodiment.

1 is a block diagram illustrating a content service system according to the present invention, which includes a mobile communication terminal 100, a wireless network 150, a swap server 200, a video on demand (VOD) server 201, and a content database ( 202).

The mobile communication terminal 100 is a WAP browser for displaying a page received from a WP server 200 providing a wireless Internet service and a VOD server 201 that provides copyrighted Video On Demand (VOD) content. VOD player that can download and play contents by connecting to the VOD player, and the WAP browser receives a page for selecting VOD content from the connected WAP server 200 and displays it on a display window such as an LCD. In accordance with the content selection of the user downloads the content to play on the display window of the mobile communication terminal (100).

In addition, the mobile communication terminal 100 transmits content information from the WP server 200 through the wireless network 150 according to a user's menu selection from a content selection menu provided by the WP server 200. The WML script includes a content provider's ID, a content ID, an IP address of the VOD server 201, and a mux option (MO: Mux) used to allocate a high-speed channel from the wireless network 150. General information about contents such as Option) and detailed information about copyright contents such as copyright name and content playback limit number (or playing period) when user wants to download is copyrighted contents and store them in memory do.

Content detailed information stored in the memory of the mobile communication terminal 100 can prevent the unlimited reproduction or copy of the downloaded copyright content, the playback information according to the first time the user plays the downloaded copyright holder content using the VOD player After creating (number of playbacks of content), store it in the memory, compare the playback information stored in the memory with the content limit information, and when the limit of playback is exceeded, the user stops using the content and plays the copyrighted content. After that, update the playback information stored in the memory (if 1 before playback, update to 2 after playback).

In addition, the mobile communication terminal 100 compares time information set in the mobile communication terminal 100 with a reproduction period that is detailed content information stored in a memory according to a user's request for reproduction of copyrighted content, and the reproduction period expires according to the comparison result. The content of the copyright holder is deleted or made unplayable.

The reproduction information and the content detailed information stored in the memory of the mobile communication terminal 100 may also be erased by deleting the copyright content.

The WAP browser embedded in the mobile communication terminal 100 changes the value of a Mux Option (MO) among the information included in the WML script transmitted from the WAP server 200 to request a high data rate. The wireless network 200 requests a high speed channel suitable for the service.

After receiving the high speed channel from the wireless network 200, the VOD player embedded in the mobile communication terminal 100 uses the address (URL) of the content included in the WML script transmitted from the swap server 200 to the corresponding VOD server. 201, the content is downloaded from the connected VOD server 201 in a download or stream manner and played.

The wireless network 150 is connected to the WP server 200 that provides a multimedia service such as VOD according to the wireless Internet access request of the mobile communication terminal 100, and the mobile communication terminal 100 to receive high capacity multimedia data. Assigns a fast channel.

The swap server 200 provides a menu selection page for selecting various contents such as multimedia to the mobile communication terminal 100 of the user accessing the wireless Internet service, and selects the contents according to the user menu selection from the provided menu page. The WML script having information about the information is provided to the mobile communication terminal 100. At this time, when the content selected by the user is copyrighted content, the WML script includes content detailed information in which the title of copyrighted content, the name of the copyright holder, the number of playback limitations (or the playback period) are set.

When the user requests the content using the content address (URL), the VOD server 201 searches the content DB 202 and provides the corresponding content to the mobile communication terminal 100.

The content DB 202 stores various multimedia contents (eg, music, movies, music videos, etc.) provided by the VOD server 201, and the contents are copyrighted copyrighted contents and generally free of charge to the user. Consists of provided content.

A copyright content protection method using the wireless data service system having the above configuration will be described with reference to FIG. 2.

2 is a flow diagram illustrating a content copyright protection method according to a preferred embodiment of the present invention.

As shown therein, the mobile communication terminal 100 accesses the swap server 200 through the wireless network 150, and the swap server 200 selects a menu through a swap browser of the connected mobile communication terminal 100. The page (ie, the main page) is displayed on the display window (S201, S202).

The swap server 200 determines whether the content selected by the user on the menu selection page is copyright content (S203). As a result of the determination in step 203, the WP server 200 converts general information about the content into a WML script when the selection is not copyright content. It transmits to the mobile communication terminal 100 through the wireless network 150.

The mobile communication terminal 100 connects from the VOD server 201 via the wireless network 150 using general information of the content received from the swap server 200, and the VOD server 201 connects the content to the content DB ( After searching in 202, the searched content data is transmitted to the mobile communication terminal 100 through the wireless network 150, and the transmitted content is stored in a memory of the mobile communication terminal 100 (S204).

The content data stored in the memory is played by the VOD player of the mobile communication terminal 100 according to the user's request.

As a result of the determination in step 203, if the content selected by the user on the menu selection page is copyrighted content, the swap server 200 transmits the WML script including the playback limit number which is general information and detailed information about the copyrighted content selected by the user. 100) (S205).

The mobile communication terminal 100 accesses the VOD server 201 through the wireless network 150 using the content general information transmitted from the swap server 200, and the VOD server 201 connects to the mobile communication terminal 100. After searching for the copyrighted content requested by the content in the content DB 202, the retrieved copyrighted content is transmitted to the mobile communication terminal 100 (S206).

The mobile communication terminal 100 stores copyrighted content transmitted from the VOD server 201 in a predetermined area of the memory. At this time, the mobile communication terminal 100 stores not only the copyrighted content but also the number of reproduction restrictions, which are detailed information of the copyrighted content.

In this case, the mobile communication terminal 100 generates reproduction information and stores the reproduction information when the user first reproduces the copyrighted content.

The mobile communication terminal 100 determines whether there is a user's reproduction request for the copyrighted content stored in the memory (S207). As a result of the determination in step 207, the copyrighted content stored in the memory when the user's request for reproduction of the copyrighted content is requested. It is determined whether or not the copyright content can be reproduced on the basis of the number of reproduction limitations as detailed information on the operation S208.

The method of determining whether or not the mobile communication terminal 100 is capable of reproducing the copyrighted content may be performed by comparing the reproduction information stored in the memory (the number of reproductions of the content) with the reproduction restriction number and reproducing when the reproduction information exceeds the reproduction restriction number. This is impossible, and if not exceeded, playback is possible.

As a result of the determination in step 208, if the copyright content cannot be reproduced, the swap browser embedded in the mobile communication terminal 100 stops playing the content after displaying a predetermined message on the display window of the mobile communication terminal 100 (S209). .

As a result of the determination in step 208, if the reproduction information of the copyright content does not exceed the reproduction limit number of times (when playback is possible), the VOD player built in the mobile communication terminal 100 plays out after retrieving the copyright content stored in the memory ( S210).

The VOD player updates the playback information stored in the memory after playing the copyrighted content, which is then compared with the number of playback limits stored in the memory of the mobile communication terminal 100 when the user requests a playback of the copyrighted content. In accordance with the comparison result, it is determined whether the copyright content requested by the user can be reproduced.

In accordance with a preferred embodiment of the present invention, the infinite reproduction or reproduction of the copyrighted content is prevented by using the reproduction limit number, which is the detailed information of the copyrighted content, but as another method, the reproduction period of the content which is the detailed information of the content downloaded from the swap server 201. It is possible to prevent the infinite copy or reproduction of the copyright content using.

Referring to the copyright protection method of the content using the reproduction period, the mobile communication terminal 100 compares the reproduction period with the time information set in the mobile communication terminal 100 in response to a request for reproduction of the copyright content, and reproduces the comparison result. If the copyrighted content has expired, a message indicating that content cannot be played is transmitted. If the copyrighted content has not expired, the copyrighted content is played.

As described above, when the copyright content is downloaded through the wireless network, the mobile communication terminal downloads and stores the detailed information (restriction number of playback or duration of playback) of the content in the memory, and the user wants to reproduce the content using the stored content detail information. By determining whether the copyrighted content can be reproduced, it is possible to prevent unlimited reproduction or copying of the copyrighted content.

Claims (6)

In the copyright protection method of the content downloaded to the mobile communication terminal via a wireless network, Receiving, by the mobile terminal, the number of reproduction restrictions on the copyright content and the copyright content through the wireless network according to a copyright content request of a user; Generating, by the mobile terminal, playback information according to a user's request for playback of the copyrighted content, and determining whether the copyrighted content is playable by comparing the playback information with the number of times the copyrighted content is played; Stopping reproduction of the copyright content or playing the copyright content according to the determination result. The method of claim 1, And the content is VOD content data. The method of claim 1, After the reproduction of the copyrighted content is completed, And updating the reproduction information of the copyrighted content. In the copyright protection method of the content downloaded to the mobile communication terminal via a wireless network, Receiving, by the mobile terminal, the number of reproduction restrictions on the copyright content and the copyright content through the wireless network according to a copyright content request of a user; Determining, by the mobile communication terminal, whether or not the copyright content can be reproduced by comparing time information of the mobile communication terminal with a reproduction period of the copyright content according to a user's request for reproduction of the copyright content; Stopping reproduction of the copyright content or playing the copyright content according to the determination result. The method of claim 4, wherein And the content is VOD content data. The method of claim 4, wherein The reproduction period is a copyright protection method of the content, characterized in that WML (Wireless Markup Language) script.