KR100836027B1 - System and method for providing of moving picture contents - Google Patents

Abstract

A video contents providing system, a mobile terminal, and a video contents providing method using the same are provided to offer video contents, which uses the intrinsic number of the mobile terminal and DRM(Digital Rights Management) is applied to, to a user, thereby enabling a provider to distribute the video contents safely and enabling the user to use various video contents of high quality easily. A video contents providing system(400) comprises a DRM generating unit(410), a contents coding unit(430), a reproduction program generating unit(440), and a transmitting unit(450). The DRM generating unit generates a coding key and a decoding key based on the intrinsic number of a mobile terminal. The contents coding unit codes contents purchased on the basis of the coding key to generate coded contents. The reproduction program generating unit generates a reproduction program for reproducing the coded contents through the decoding key. The transmitting unit transmits the coded contents and the reproduction program to the mobile terminal which has purchased contents.

Description

System for providing video content, mobile terminal and video content providing method using the same {System and method for providing of moving picture contents}

1 is a structural diagram of a general video service providing system.

2 is a flowchart illustrating a general video service providing method.

3 is a structural diagram of a video service providing system according to an exemplary embodiment of the present invention.

4 is a structural diagram of a video content providing unit according to an exemplary embodiment of the present invention.

5 is a structural diagram of a mobile terminal providing a video service according to an embodiment of the present invention.

6 is a flowchart illustrating a video service providing method according to an exemplary embodiment of the present invention.

The present invention relates to a video content providing system, a mobile terminal and a video content providing method, and more particularly, a system capable of providing video content using a wired internet network, a mobile terminal for playing video content, and video content using the same. It is about a method.

Starting with the development of web browsers, the Internet is growing rapidly around the world, and it is gradually becoming “Everything over Internet”. Based on this, the dissemination of video content through the Internet is increasing rapidly.

However, video content currently being distributed to a user's mobile terminal is not directly provided by a content provider (CP) providing video content, but a streaming video service using a wireless internet network of a mobile communication service provider is provided. It is a state.

In this way, in order for a user who receives a service using a mobile terminal to receive a video content, a communication connection fee through a wireless Internet connection must be additionally paid in addition to the video content cost. In addition, since a video content must be downloaded through a wireless Internet network, it takes a long time to download.

In addition, there is a method in which a user directly downloads a video service through the Internet and provides a service without using a mobile service provider's wireless Internet network. This is a moving picture experts group-1 audio layer 3 (MP3) sound source file. This service is limited to only, and there is no service for video content.

Accordingly, the present invention is to solve the above problems of the prior art, and provides a system that allows the user to directly download the video content through the Internet without using a separate mobile communication network of the mobile communication service provider to use the service do.

In addition, by using the system as described above provides a service providing method that allows a user to receive video content.

In a system for providing content to a terminal, the content providing system which is a feature of the present invention for achieving the technical problem of the present invention,

A DRM generator configured to generate an encoding key and a decryption key based on the unique number of the terminal; A content encoder to generate the encoded content by encoding the purchased content based on the encoding key; A reproduction program generating unit generating a reproduction program for reproducing the encoded content through the decryption key; And a transmission unit for transmitting the encoded content and the playback program to a terminal that purchased the content.

In another aspect of the present invention, there is provided a mobile terminal for providing video content generated from a video content providing system connected to a wired Internet network.

A memory for storing a playback program generated from the video content providing system; A video playback unit receiving encoded video content generated from the video content providing system to play a video using a playback program stored in the memory, and determining whether to download the playback program; And a control unit controlling the memory and the video reproducing unit to download the reproducing program into the memory through the video content providing system.

In the method for providing content to a terminal which is another feature of the present invention for achieving the technical problem of the present invention,

Collecting purchase information about the content and a unique number of the terminal; Generating an encryption key and a decryption key corresponding to the encryption key based on the unique number of the terminal; Encoding the content using the encoding key to generate encoded content; Generating a playback program capable of playing the encoded content through the decryption key and the unique number of the terminal; And transmitting the generated encoded content and the playback program to the terminal.

Another aspect of the present invention for achieving the technical problem of the present invention is a recording medium having a function of identifying a unique number of the terminal; Generating a decrypted content by decoding the content encoded using the unique number and the encoding key generated based on the unique number, using a decryption key corresponding to the encoding key and the unique number; And a function of playing the decoded content.

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. Like parts are designated by like reference numerals throughout the specification.

In addition, when a part is said to "include" a certain component, it means that it may further include other components, without excluding other components unless otherwise stated.

Before describing a video service providing system and a video service providing method according to an exemplary embodiment of the present invention, a video content provided by a video content provider in a mobile phone capable of playing video (hereinafter, referred to as a "video mobile phone") is generally used. A structure of a service providing system for viewing can be described with reference to FIG. 1.

1 is a structural diagram of a general video service providing system.

As shown in FIG. 1, the video service providing system includes a video content web server 10, a streaming media server 20, and a download media server 30 for providing video content. The video content is delivered to the user through the wireless Internet network 40 of the mobile carrier on the system consisting of these components.

Here, the video content web server 10 provides video content to a user, and the streaming media server 20 performs a function of playing a video in real time without downloading video content through a wireless internet network of a mobile communication company. At this time, the video content is provided from the download media server 30.

A brief description will be given of a streaming video service procedure using the wireless Internet network 40 of the mobile communication service provider based on the above-described components. The user can use the mobile terminal to provide a wireless internet network 40 provided by the mobile communication service provider. To the service. Next, the user selects and purchases a desired video in a streaming or download form. The information about the purchased streaming video content is delivered to the streaming server 20, and when the streaming server 20 is streamed to the mobile terminal through the wireless internet network 40, the user views it using the mobile terminal.

At this time, even when the video content purchased by the user is in the download form, it is downloaded only through the wireless Internet network 40. If it is possible to search or purchase the downloadable video content from the homepage where the corresponding video content exists on the PC through the wired internet network instead of the wireless internet network 40, in this case, the download operation is transferred to the mobile terminal through the wireless internet network. Only download is possible.

Next, a method of providing a video service briefly described above will be described in detail with reference to FIG. 2. That is, a description will be given of a video web download service using a wired Internet network targeting only a specific model called a portable multimedia player (PMP) phone limited to a specific mobile communication company.

2 is a flowchart illustrating a general video service providing method.

Referring to FIG. 2, first of all, a mobile terminal to be provided with a video service performs a wireless authentication and a wired authentication process through a mobile communication network providing a video service. Through this process, it is necessary to authenticate whether the user to be provided with the service and the user's mobile terminal are a registered user / mobile terminal through a proper procedure.

In the case of a legitimate user / mobile terminal, the user purchases video content to be provided on the web using a PC. When the user purchases the video content, the media video content with DRM is downloaded from the download media server to the PC. The dedicated manager program synchronizes the PC and the mobile phone and downloads it to the mobile phone.

The above-described service providing method can provide video content only to a specific model such as a PMP mobile terminal dedicated to a mobile communication company, and a mobile terminal providing a majority of general videos can receive video content through an internet web download method. none. In addition, due to the difference in the authentication method for the user / mobile terminal, it does not support high-speed transmission to an external memory of a mobile terminal using a memory reader, and high-speed data transmission is difficult because only a download to the mobile terminal using a PC synchronization method is used. .

In addition, the streaming video content providing method requires that the user of the mobile terminal additionally pays a communication access fee to the mobile communication provider in addition to the video content cost. Accordingly, the video service can be provided only when the user pays the pay-as-you-go fee according to the video content capacity and is connected to the mobile communication company's network.

In another video content providing method, a download method using the general wired Internet, a user of a video content must pay a pay-as-you-go or a flat-rate fee for the mobile communication network in addition to the cost of purchasing the video content, and is relatively slower than that of the general wired internet network. Since video content must be downloaded using a wireless internet network, a lot of time is required for downloading video content.

In order to solve such a problem, a system that can provide a video content service through a general wired Internet network using a mobile terminal that can provide a general video service will be described with reference to FIG. 3.

3 is a structural diagram of a video service providing system according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the system for providing a video service to the mobile terminal 200 through the wired / wireless network 300 according to an embodiment of the present invention includes a download media server 500 and a video content providing unit 400. Include. In this case, the video content providing unit 400 is connected to the user's PC 100 through the wired / wireless network 300.

The download media server 500 includes a plurality of video contents for providing a video service to a user. The user may search for a plurality of video contents through the download media server 500, and may purchase the searched video contents. At this time, the video content is downloaded at a higher speed than the wireless Internet network through the wired or wireless network 300 connected to the user's PC (100).

When the user selects and purchases any one of a plurality of video contents existing in the download media server 500, the video content providing unit 400 may be provided in the form of a video service in the mobile terminal 200 possessed by the user. The video content is encoded and output so that it can be encoded. In addition, the mobile terminal 200 generates a playback program so that the encoded video content can be played on the user's mobile terminal 200 and provides the same to the user's mobile terminal 200.

The download media server 500 and the video content providing unit 400 transmit the video content and the playback program to the mobile terminal 200 of the user through the wired / wireless network 300 or by using the memory reader. ), Or to a user's mobile terminal 200 using a PC synchronization program. However, the transmission method to the mobile terminal is not necessarily limited in this way.

Here, the video content providing unit 400 which outputs video content and a playback program that is actually used by the user to receive a video service through the mobile terminal will be described in detail with reference to FIG. 4.

4 is a structural diagram of a video content providing unit according to an exemplary embodiment of the present invention.

Referring to FIG. 4, the video content providing unit 400 includes a digital rights management (DRM) generator 410, a video content encoder 430, a playback program generator 440, and a user information storage unit. 420 and the transmitter 450.

The DRM generator 410 receives a unique number (eg, a PN (Product Number) or a Serial Number (SN)) of the mobile terminal 200 to receive a video service and performs a function of combining a specific algorithm. do. That is, the DRM generator 410 generates and outputs an encoding key and a decryption key for preventing illegal distribution of video content. Here, a manufacturing number is mentioned as PN, and a telephone number is mentioned as SN.

Meanwhile, the encryption key and the decryption key may be generated through a symmetric key based encryption algorithm or may be generated through an asymmetric key based encryption algorithm, which may be variously changed by a system designer. That is, a specific algorithm used to generate an encoding key and a decryption key is an algorithm required for encoding a protected video content and packaging the video content together with an identification number and metadata information of the video content. Algorithms or asymmetric key-based cryptographic algorithms.

In addition, specific algorithms include algorithms necessary for tampering resistance (Tampering Resistance) and usage monitoring techniques. Since the technology related to such DRM is already known, a detailed description by the embodiment of the present invention will be omitted.

The video content encoder 430 receives the video content purchased by the user from the download media server 500, and encodes the video content by using the DRM including the encoding key output through the DRM generator 410. Output

The playback program generator 440 may play back the encoded video content output through the video content encoder 430 on the mobile terminal 200 based on the decryption key output from the DRM generator 410. Create and print The generated reproduction program is generated using a decoding key corresponding to the encoding key used when encoding the moving image content, so that the encoded moving image content can be decoded.

Meanwhile, the playback program decodes the encoded video content by using the decryption key and the unique number of the mobile terminal 200. Therefore, when the mobile terminal in which the playback program is installed is changed, the playback program cannot decode the encoded video content. In particular, when the playback program decodes the encoded content through the serial number, the playback program is not executed when the mobile terminal to be installed is changed.

Therefore, the encoded content can be reproduced only in the terminal having the serial number used for encoding and can be safely distributed. In addition, when the reproduction program decodes the encoded content through the telephone number, the reproduction program can be executed if the same telephone number is the same even if the mobile terminal installed is changed. In this case, even when the user changes the mobile terminal and maintains the phone number, the playback program and the encoded content may continue to be used, so the content providing system provides safe distribution of the content and user convenience.

The user information storage unit 420 receives and stores the DRM information generated based on the unique number and the unique number received from the mobile terminal 200. The user selects a playback program to be installed in the user's mobile terminal 200 through information stored in the user information storage unit 420 when the user performs a process of searching for and purchasing video content on the web in order to receive a video service. It is a standard.

The transmission unit 450 receives the encoded video content output from the video content encoder 430 and the playback program output through the playback program generator 440 to the mobile terminal 200 to execute a video service. Perform the function of passing.

In this case, the transmitter 450 may transmit the encoded content and the playback program to the mobile terminal 200 through a wireless network, or may be transmitted through a personal computer (PC) connected through a wired network. In addition, the transmitter 450 may transmit the encoded content to the mobile terminal 200 through a PC, or may transmit the encoded content through a wireless network.

Next, a structure of a mobile terminal 200 that provides a video service to a user according to an embodiment of the present invention will be described with reference to FIG. 5. In this case, the mobile terminal 200 includes a mobile phone, a personal digital assistant (PDA), a play station portable (PSP), and the like.

5 is a structural diagram of a mobile terminal providing a video service according to an embodiment of the present invention.

Referring to FIG. 5, the mobile terminal 200 includes a control unit 240, a key input unit 210, a display unit 220, a memory 230, a wireless transceiver 250, a voice processor 260, and a video player ( 270).

The wireless transceiver 250 performs a function of transmitting and receiving wireless signals with a mobile communication network including a base station and an exchange station so as to perform a communication function of the mobile terminal 200. The controller 240 not only controls each component of the mobile terminal 200, but also controls the video player 270 to decode and play the encoded video content, which will be described later. In step 230, the playback program is controlled to be downloaded.

The memory 230 stores a mobile terminal driven program, an application (eg, including a video player or a game emulator, etc.), content (eg, including game data, multimedia data, etc.). Also, the playback program output from the video content providing unit 400 is stored so as to decode and play the encoded video content. At this time, the playback program is stored in the form of a program corresponding to the platform of the mobile terminal 200.

The video reproducing unit 270 determines whether a reproducing program capable of reproducing the video is previously downloaded to the memory 230 before reproducing the encoded video received from the video content providing unit 400. As a result of the determination, if a playback program is downloaded, the encoded video is played through the playback program.

If the playback program has not been downloaded, the playback program generated using the decryption key corresponding to the encoding key can be downloaded. Here, the download method of the playback program may download a video playback program suitable for the platform of the mobile terminal (for example, WIPI, SK-VM, Brew, GVM, etc.) through the wireless Internet network of the mobile carrier, or download it via a PC. You may.

The voice processor 260 outputs voice data received through the wireless transceiver 250 to the outside through a speaker under the control of the controller 240 or outputs a voice input by a user of the first mobile terminal through a microphone. To be transmitted to the mobile terminal. The display 220 not only provides the user with the video content reproduced through the video player 270 but also determines whether the playback program is downloaded to the memory 230.

A method of providing a video service to a user by using the mobile terminal 200 and the video content providing unit 400 described with reference to FIGS. 3 to 5 will be described with reference to FIG. 6.

6 is a flowchart illustrating a video service providing method according to an exemplary embodiment of the present invention.

As shown in FIG. 6, a user who wants to receive a video service through the mobile terminal 200 searches for and purchases his / her desired video content on the web through a wired Internet network using the PC 100 (S100). do. Herein, the wired internet network includes a wired network such as a digital subscriber line (xDSL) and a hybrid fiber coaxial cable (HFC) provided by a communication company, but is not necessarily limited thereto.

The unique number of the mobile terminal 200 input through the search and purchase of the video content (S100) is transmitted to the user information storage unit 420 of the video content providing unit 400 (S110), and the purchased video content list is The download media server 500 is transferred (S120). The unique number may be a manufacturing number of the mobile terminal 200, or may be a telephone number of the mobile terminal 200. The video content selected by the user is selected from the download media server 500 and transferred to the user information storage unit 420 (S130) and stored.

The DRM generator 410 receives the video content selected by the user from the download media server 500 and the unique number of the mobile terminal 200 input by the user through the PC 100 (S110 and S130). 420 stores the corresponding unique number (S140), and the DRM generator 410 combines the unique number of the mobile terminal and a specific algorithm preset in the video content providing unit 400 to generate an encoding key and a decryption key. Generate (S150). The generated encryption key and decryption key are generated to prevent illegal copying of the video content by the user who purchased the video content or by people other than the user.

The encoding key and the decryption key generated and output by the DRM generator 410 are not only stored in the user information storage unit 420 but also are input to the video content encoder 430 and received from the download media server 500. It is used to generate a video content encoded with the content (S160). In addition, the DRM generates and outputs a playback program inputted to the playback program generator 440 to decode and play the encoded video content output through the video content encoder 430 (S160).

In this case, the encryption key used for encoding the video content and the decryption key applied to generate the playback program may be generated by a symmetric key encryption method that is mutually matched, or by an asymmetric key encryption method in which the encoding key and the decryption key are different from each other. Use the generated key.

The transmitter 450 receives the encoded video content output from the video content encoder 430 and the playback program output from the playback program generator 440 to the user's PC 100 through a wired or wireless network. Send (S180). The user who downloads the encoded video content and the playback program through the PC 100 (S180) transmits the encoded video content to the external memory of the mobile terminal 200 through the memory reader or the encoded video through the PC synchronization program using a USB cable. The content is transmitted to the mobile terminal 200 (S190).

In this case, the mobile terminal 200 determines whether a playback program to play encoded video content is stored in the mobile terminal 200 (S200). If there is a playback program, the video content is played using the corresponding playback program (S220).

However, if there is no playback program, the playback program stored in the PC 100 or the playback program generated in the video content providing unit 400 is downloaded (S210). In the case of downloading the playback program, it corresponds to a mobile terminal that is not equipped with the DRM decoding function among the existing mobile terminal or a mobile terminal 200 to be released in the future. Since the mobile terminal 200 cannot play the encoded video content by applying the DRM, the mobile terminal 200 needs to install a suitable video play program.

A user of the mobile terminal 200 capable of playing a video may download a playback program suitable for the platform of the mobile terminal (where the platform includes WIPI, SK-VM, Brew, GVM, etc.) through the wireless Internet network of the mobile carrier. Alternatively, the mobile terminal may download a playback program by accessing the service homepage of a video content provider through a wired Internet via a PC, and then download the playback program to the memory 230 of the mobile terminal through a PC synchronization program or a memory reader as described above. . At this time, the playback program may be installed only once.

Here, whether to download the playback program includes extracting information about an encoding key from the encoded video content input to the video reproduction unit 270, and a plurality of application information stored in the memory 230 based on the information of the encoding key. Compare. If there is information corresponding to the encoding key among the application information, the control unit 240 allows the encoded video content to be played back through the corresponding playback program. If there is no corresponding information, the control unit 240 requests the playback program from the video content providing unit 400. A message is provided to the user through the display unit 220 to be downloaded. When the playback program is downloaded to the memory 230 of the mobile terminal 200 (S210), the video playback unit 270 decodes the encoded video and provides the user to the user via the display unit 220 (S220). do.

In the above, the method for providing the video content to the mobile terminal 200 has been described, but it is not necessarily limited to the video content.

Here, a program for realizing a function corresponding to the configuration of the above-described embodiment of the present invention or a recording medium on which the program is recorded is also included in the scope of the present invention.

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.

According to the above-described embodiment, since the DRM is applied to service the video content using the unique number of the mobile terminal, the operator can safely distribute the video content, the user can easily use a variety of high-quality video content.

In addition, when the playback program decodes the encoded content by the serial number, the playback program is not executed when the terminal to which the playback program is installed is changed. Therefore, the encrypted content can be reproduced only in the terminal having the serial number used for encoding and can be safely distributed.

In addition, when the reproduction program decodes the encoded content through the telephone number, the reproduction program can be executed if the same telephone number is the same even if the terminal to be installed is changed. At this time, even when the user changes the terminal and maintains the telephone number, the playback program and the encoded content may continue to be used, so the content providing system provides safe distribution of the content and user convenience.

In addition, users of the mobile terminal can download and use the video content through the wired Internet at a lower cost than the streaming VOD service of the mobile communication company's wireless Internet network.

In addition, even if it is not a specific mobile terminal of a mobile communication company, any mobile terminal capable of providing a video service may be provided with a video service.

Claims (17)

In the system for providing content to a mobile terminal, A digital rights management (DRM) generation unit for generating an encoding key and a decryption key based on the unique number of the mobile terminal; A content encoder to generate the encoded content by encoding the purchased content based on the encoding key; A reproduction program generating unit generating a reproduction program for reproducing the encoded content through the decryption key; And Transmission unit for transmitting the encoded content and the playback program to the mobile terminal that purchased the content System comprising a. The method of claim 1, And the playback program plays back the encoded content through the decryption key and the unique number of the mobile terminal. The method of claim 2, The unique number is a manufacturing number of the mobile terminal. The method of claim 2, The unique number is a telephone number of the mobile terminal. The method according to any one of claims 1 to 4, The transmitting unit transmits the encoded content and the playback program via a wireless network. The method according to any one of claims 1 to 4, And the transmission unit transmits the playback program through a personal computer connected to the system via a wired network. The method of claim 6, And the transmission unit transmits the encoded contents through the personal computer. The method of claim 6, The transmission unit transmits the encoded content through a wireless network. A mobile terminal for providing video content generated from a video content providing system connected to a wired internet network, A memory for storing a playback program generated from the video content providing system; A video playback unit receiving encoded video content generated from the video content providing system to play a video using a playback program stored in the memory, and determining whether to download the playback program; And Control unit for controlling the memory and the video playback unit to download the playback program to the memory through the video content providing system A mobile terminal comprising a. The method of claim 9, The playback program stored in the memory is a program corresponding to the platform of the mobile terminal. In the video content system to provide content to a mobile terminal, Collecting purchase information about the content and a unique number of the mobile terminal; Generating an encoding key and a decryption key corresponding to the encoding key based on the unique number of the mobile terminal; Encoding the content using the encoding key to generate encoded content; Generating a playback program capable of playing the encoded content through the decryption key and the unique number of the mobile terminal; And Transmitting the generated encoded content and the playback program to the mobile terminal. How to include. The method of claim 11, After the step of transmitting the encoded content and the playback program to the mobile terminal, the mobile terminal, Downloading the encoded content; And Determining whether a playback program capable of playing the encoded content is stored, and if there is a playback program, playing the encoded content with the corresponding playback program; How to include. The method of claim 12, The unique number is a manufacturing number of the mobile terminal. The method of claim 12, The unique number is a telephone number of the mobile terminal. The method according to any one of claims 11 to 14, And the playback program is transmitted to the mobile terminal through a personal computer connected through a wired network. The method according to any one of claims 11 to 14, The encoded content is transmitted to the mobile terminal through a personal computer connected via a wired network. A function of the video content system identifying a unique number of the mobile terminal; A function of generating encoded content by encoding content by using the unique number and an encoding key generated based on the unique number, and generating a decryption key corresponding to the encoding key; Generating a decoded content by decoding the encoded content by using the unique number in the mobile terminal; And A function of playing the decoded content The recording medium in which the program is stored.

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