KR20070024132A - Method for protecting copyright of contents in a wireless-terminal - Google Patents

Abstract

A method for protecting a copyright of contents in a wireless-terminal is provided to protect the copyright of the contents by preventing the contents from being reused carelessly when the contents is transmitted through a MMS(Multimedia Messaging Service). A method for protecting a copyright of contents in a wireless-terminal includes the steps of: receiving an MM(Multimedia Message) including the contents through a network by a service providing system; forming the encoded MM by encoding the contents by a control unit of the service providing system and forming/storing a decoding key which decodes the encoded MM(200,300); transmitting a text to check whether the MM is received or not, and the decoding key to allow an user to see the contents included in the encoded MM to a receiver's terminal included in the MM through an MMS by the control unit(400); and transmitting the encoded MM to the receiver's terminal through a wireless network when a download request signal for the MM is received from the receiver's terminal(600), wherein the encoded MM is decoded in the receiver's terminal by the decoding key.

Description

Method for Protecting Copyright of Contents in A Wireless-Terminal}

1 is a configuration diagram of an embodiment of a message transmission system to which the present invention is applied.

2 is a flowchart of an embodiment of a content copyright protection method in a wireless terminal according to the present invention;

3 is an exemplary view illustrating a data format of a multimedia message to which the present invention is applied.

The present invention is directed to protecting the copyright of content transmitted over a network, and more particularly to a method for protecting content copyright in a wireless terminal.

Currently, as a method for transmitting a simple message through a wireless terminal (cell phone, PDA phone, etc.), a short message service (shortly referred to as SMS) and a multimedia messaging service (hereinafter referred to as 'MMS') And the like) are used.

First, SMS is a service that sends a text message to the other party's wireless terminal. It is composed of letters, numbers, symbols, and so on. It can be used in generation mobile communication network.

Next, MMS is a service that supports the transmission and reception of rich media messages composed of text, music, images, and video, and users can use wireless postcards, pictures, videos, and videos through the MMS service. Not only can you send cards, maps, business cards, etc., but you can also receive messages that require broadband, such as cartoons, animations, video ads, and video calls. In this case, the MMS can be used in a high-speed mobile communication network of 2.5G or more such as GPRS and CDMA2000, and full-scale use is possible in 3G service.

On the other hand, MMS greatly expands the range of entertainment that can be enjoyed by wireless terminals by allowing the transmission and reception of complex multimedia contents, such as ringtone download service, logo screen download service, character download service, wireless music / radio and video. Service and the like.

As described above, SMS is currently used as the simplest method of transmitting a message, and over 90% of the SMS is used for interpersonal communication. On the other hand, although SMS will continue to be used as the main means of communication between individuals with low price and accurate communication, communication between individuals is becoming more diversified due to the emergence of MMS. In other words, MMS can provide various types of personal services such as video letters and postcards, messages combining images and texts, messages combining images and voices, and video calls, rather than text- and message-oriented messages delivery in SMS. Can be.

In addition, MMS service between individuals is the biggest difference from the existing SMS in that the specific moment can be shared with the other party. That is, the user may take a current place or event by using a digital camera attached to the wireless terminal and immediately send it to the other party using the MMS, or photograph the scene to the other party by using a digital video cam and transmit the message using the MMS.

In addition, the MMS may transmit still images, such as screensavers, start / end screens, photos, postcards, presentations, and website screens, to a terminal supporting MMS through a 2.5G or higher speed wireless network.

Meanwhile, as described above, the MMS provides contents such as images (characters, photos, screensavers, postcards, etc.), sounds (ringtones, music, radio, etc.) as well as moving images (videos, TV broadcasts, etc.) through wireless terminals. In this case, the content may be directly produced by a general user, or may be produced by an operator of a system for providing an MMS service (hereinafter, referred to as a 'service providing system').

In other words, the content is produced by the efforts of the creators, the copyright must be protected accordingly, the copyright for the content produced by the general user as well as the content produced by the operator of the service providing system. It must be protected. In addition, not only from a legal point of view such as copyright, but also from a general user's point of view, it is not desirable that contents produced by a user are copied and distributed indiscriminately through a wireless terminal.

However, the MMS that is currently being provided can protect the copyright for each content because once it is transmitted through the wireless terminal, the content contained therein can be copied and distributed repeatedly, regardless of the intention of the original sender. There is no problem.

An object of the present invention for solving the above problems is to encrypt the content transmitted through the message transmission service of the wireless terminal, while providing the decryption key information only to the receiver terminal used by a specific receiver to ensure the copyright of the content. In order to protect the contents, there is provided a content copyright protection method in a wireless terminal.

In order to achieve the above object, the present invention provides a method for protecting content copyright in a wireless terminal applied to a message transmission system, the method comprising: (a) receiving, by a service providing system, a multimedia message (MM) including content through a network; (b) the control unit 12 of the service providing system performs encryption on the content, thereby generating an encrypted multimedia message (MM) for the multimedia message (MM), while the encrypted multimedia message (MM) is generated. Generating and storing a decryption key capable of decrypting; (c) the control unit 12 is a receiver terminal included in the multimedia message (MM), and contents inserted into the encrypted multimedia message (MM) together with text indicating whether the multimedia message (MM) has been received. Transmitting the decryption key, which can read the data, using a multimedia message service (MMS); And (d) when the download request signal for the multimedia message is received from the receiver terminal, transmitting, by the controller, the encrypted multimedia message (MM) to the receiver terminal through a wireless network. Including, but the encrypted multimedia message (MM) is characterized in that decrypted by the decryption key in the receiver terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a message transmission system to which the present invention is applied.

As shown in the figure, the message transmission system to which the present invention is applied is designed to encrypt a message to be transmitted by a sender and to transmit a decryption key for the encryption to only a specific receiver so that the receiver can view the message. The service providing system 10 includes a sender terminal 20 used by the sender to transmit the message, and a receiver terminal 30 used by the receiver to receive the message.

In this case, the service providing system 10 is a system operated by a service provider (eg, KTF, LGT, SKT) providing a mobile communication service to provide various message transmission services, in particular MMS, in addition to voice call service. , An interface 11 for communicating with the caller terminal or the receiver terminal through a wireless network or a wired network, a message service providing unit 13 for providing the MMS service, and contents of a message provided through a message service providing unit. The content management unit 14 for storing and encrypting the license information or managing permission information on the content, the user management unit 15 for managing information on the user using the MMS service, receiving various information from the operator, or receiving various information from the operator. Input / output unit 16 for outputting information and controlling the interface and functions of each unit It is constituted by a control unit 12 for group.

In addition, the caller terminal 20, which is used by the caller to access the service providing system to transmit various contents to the receiver terminal 30 through the MMS, a wireless terminal (cell phone, PDA phone, etc.) providing MMS Or a wired terminal such as a computer. That is, the receiver terminal 30 may be said to be limited to the wireless terminal as a terminal used by the receiver to view or use the content transmitted through the sender terminal, but the sender terminal 20 inserts the content into the message. It is generally intended to be a wireless terminal for transmission through a service providing system, but wired terminals are also available.

2 is a flowchart illustrating an embodiment of a content copyright protection method in a wireless terminal according to the present invention. 3 is an exemplary view of a data format of a multimedia message applied to the present invention.

That is, the present invention is to protect the copyright of contents included in a multimedia message (hereinafter, simply referred to as 'MM') using MMS. The process begins (100).

In this case, the MM creation process 100 may be largely performed through two paths.

The first route is that the MM is created by inserting the content that the user created in the message. That is, the user accesses the message service provider 13 through his caller terminal 20 (or offline) and inserts the content (photo, music file, character, etc.) produced by himself in the message to insert the MM. In this case, the encryption request menu provided by the MM creating program may be inserted into the MM only when the encryption of the content is desired.

The second route is that the MM is created by the user inserting the content previously prepared by the operator of the service providing system 10 into the message. That is, the user can create the MM by inserting contents provided by the message service providing unit 13 of the service providing system 10 into his or her message.

Meanwhile, the MM created by the MM creation process 200 is transmitted to the message service provider 13 through the interface 11, and the controller 12 drives the content manager 14 to be inserted into the MM. Encrypt the content (200).

In this case, in the case of the MM created through the second path of the MM creation process 100, even if there is no separate user request, the content manager 14 encrypts and stores the content inserted into the MM.

However, in the case of the MM created through the first path of the MM creation process 100, the content management unit 14 inserts the content into the MM only when the encryption request menu is inserted into the MM as described above. Encryption will be performed on.

In this case, in the embodiment of the present invention, the encryption is performed only for the content inserted into the MM as described above, but the present invention is not limited thereto. Therefore, the MM itself may be integrated. . However, encrypting the MM itself encrypts a large amount of information, and not only the encryption process itself can be complicated, but also the decryption key information for decryption becomes large. Since there is a problem that it should be, it would be desirable to encrypt only the content as in the present embodiment.

In addition, the process of encrypting the content or the MM itself may be applied to the encryption methods that are generally used, and a detailed description thereof will be omitted.

The content manager 14 encrypts the content inserted into the MM by the encryption process 200, and generates and stores a decryption key for decrypting the encrypted content (300).

Thereafter, the controller 12 extracts the receiver terminal number included in the MM and transmits a notification message indicating whether the MM is received by using the MMS to the corresponding receiver terminal 30 (400). In this case, the present invention uses a method of transmitting the decryption key together with the notification message.

That is, as shown in (a) of FIG. 3, the notification message includes a decryption key for reading contents inserted into the MM along with text indicating whether the MM is received.

Meanwhile, a user who receives the notification message through the receiver terminal 30 accesses the service providing system through a menu (or a call button, etc.) inserted into the notification message. In this case, the receiver terminal 30 500 transmits a signal for requesting the download of the MM included in the notification message to the service providing system (500).

The control unit 12 of the service providing system receiving the download request signal determines whether the receiver terminal 30 is the legitimate receiver terminal 30 requested by the caller using the user information of the user manager 15. First of all, in the case of the legitimate receiver terminal 30, the receiver MM (hereinafter, simply referred to as 'encrypted MM') into which the encrypted content stored in the content manager 14 is inserted is transmitted through the wireless network. As it is downloaded to the terminal (600), the encrypted MM, as shown in Figure 3 (b) is a portion of the content except the text is encrypted.

The receiver terminal 30 that has downloaded the encrypted MM decrypts the encrypted MM using the decryption key, and the content is decrypted according to the decryption process to normally output the device of the receiver terminal 30. As it is output through the receiver, the sender can normally check the contents of the MM to be transmitted (700).

On the other hand, the encrypted MM is not stored in the receiver terminal 300 in a decrypted state after being decrypted by the decryption process 700, the original encrypted MM after the user's reading is finished It is stored in the receiver terminal 300 in a state.

That is, the present invention is to prohibit the encrypted MM is downloaded to the receiver terminal 30 and then transmitted and used again by other terminals. As described above, the MM is encrypted after the receiver request to read the MM. By storing it, the receiver cannot reuse the encrypted MM in another terminal.

However, since the decryption key transmitted through the notification process 400 is stored in the receiver terminal 300, when the user wants to view the encrypted MM, the receiver terminal 300 receives the decryption key. The encrypted MM is decrypted and output again using the receiver, so that the receiver can read the encrypted MM at any time.

On the other hand, when the receiver wants to send the encrypted MM to another receiver terminal to be used by another user, it can be used through the following process.

That is, the receiver first transmits the encrypted MM stored in the receiver terminal to another receiver terminal using an infrared port or a wired cable or an MMS service as described above.

Next, the service providing system requests the service providing system to transmit the decryption key for the encrypted MM to the other receiver terminal (concept of extending the first process 100 of FIG. 2).

That is, the present invention may assign an ID to each content inserted into an encrypted MM downloaded to the receiver terminal, and the ID is output together when the encrypted MM is output to the receiver terminal. Therefore, the receiver accesses the message service provider 13 of the service providing system 10 through his receiver terminal, selects a content reuse menu among solutions provided by the message service provider 13, and then reuses the message. Enter the ID of the content and the phone number of another receiver terminal to be retransmitted.

The message service provider 13 receiving the ID and another receiver terminal phone number adds a predetermined cost to the receiver terminal or another receiver terminal, while the content management unit 14 stores the contents for the content stored in the content management unit 14. The decryption key is transmitted to another receiver terminal using MMS.

Meanwhile, another user who receives the decryption key may use the encrypted MM as described in the decryption process 700 of FIG. 2.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

The present invention as described above can protect the copyright of the creator of the content by preventing the content is indiscriminately reused when the content produced by the user or the operator of the service providing system is transmitted using MMS. That has an excellent effect.

Claims (3)

In the method of copyright protection of content in a wireless terminal applied to a message transmission system, (a) the service providing system receiving a multimedia message (MM) including content through a network; (b) the control unit 12 of the service providing system performs encryption on the content, thereby generating an encrypted multimedia message (MM) for the multimedia message (MM), while the encrypted multimedia message (MM) is generated. Generating and storing a decryption key capable of decrypting; (c) the control unit 12 is a receiver terminal included in the multimedia message (MM), and contents inserted into the encrypted multimedia message (MM) together with text indicating whether the multimedia message (MM) has been received. Transmitting the decryption key, which can read the data, using a multimedia message service (MMS); And (d) when the download request signal for the multimedia message is received from the receiver terminal, transmitting, by the controller 12, the encrypted multimedia message (MM) to the receiver terminal through a wireless network; But The encrypted multimedia message (MM) is decrypted by the decryption key at the receiver terminal Content copyright protection method in a wireless terminal, characterized in that. The method of claim 1, The encrypted multimedia message (MM) is decrypted by the decryption key in the receiver terminal and then stored in the receiver terminal in the encrypted multimedia message (MM) state again. Content copyright protection method in a wireless terminal, characterized in that. The method according to claim 1 or 2, (e) when the ID of the content inserted in the encrypted multimedia message (MM) and another recipient terminal number are transmitted from the receiver terminal through a network, the controller inserts the encrypted multimedia message (MM) into the encrypted multimedia message (MM). The method may further include transmitting the decryption key for reading the content corresponding to the ID to the another receiver terminal using a multimedia message service (MMS), The another receiver terminal stores the encrypted multimedia message (MM) received from the receiver terminal using an infrared port or a wired cable or an MMS service, and the encrypted multimedia message (MM) is stored in the another receiver terminal. Is decrypted by the decryption key Content copyright protection method in a wireless terminal, characterized in that.

Images