KR100597134B1 - Digital Multimedia Broadcasting Service Syster And Method Thereof - Google Patents

Abstract

The present invention relates to a broadcast service system and method for implementing a two-way broadcast service using a terrestrial digital multimedia broadcasting and a mobile communication system.

In the digital multimedia broadcasting system according to the present invention, in the digital multimedia broadcasting system, an undefined region in the fast information group included in the fast information channel defined by the Eureka-147 standard is defined, and the broadcasting related information is defined in the region. A link service including link information to be connected, a broadcast service center for creating the digital multimedia broadcast data, the broadcast data related information, and the link data, the digital multimedia broadcast data from the broadcast service center, and the broadcast data related A digital multimedia system for providing a user with information and the link data added to the broadcast data, a mobile communication system for establishing a communication channel for accessing the broadcast related information by the link data, and the digital And a mobile communication terminal for receiving a multimedia broadcast and the link data, establishing a communication channel with the mobile communication system, and providing the broadcast related information received through the communication channel to a user.

Description

Digital Multimedia Broadcasting Service Syster And Method Thereof}             

1 shows one multiplex.

2 is a diagram illustrating a DMB channel allocated to one broadcast channel.

4 shows the details of the FIC of the DMB multiplex.

5 shows the MSC in detail.

6 is a diagram illustrating a DMB broadcasting system according to the present invention.

7 is a diagram illustrating the mobile communication terminal in more detail.

8 is a diagram illustrating a bidirectional DMB service method according to the present invention.

9A to 9G illustrate examples of the service providing method of the present invention.

<Description of Symbols for Main Parts of Drawings>

1: DMB 1 channel 2: Guard band

5: broadcasting service center 7: DMB system

9: mobile communication system 11: mobile communication terminal

13: DMB module 15: mobile communication module

17: control unit 19: memory

21: output device

The present invention relates to mobile communication and digital multimedia broadcasting, and more particularly, to a broadcast service system and method for implementing a two-way broadcasting service using a terrestrial digital multimedia broadcasting and a mobile communication system.

Recently, with the improvement of performance according to the related technology development of the mobile communication system and the appearance of the next generation broadcasting system, Digital Multimedia Broadcasting (hereinafter referred to as "DMB"), the access of multimedia such as video using a portable terminal device has become easier. Mobile communication transmits broadcasting, music, and images by using a high-speed data service to be used by a user, and DMB can use services such as high-quality video and music by commencing commercial service soon.

DMB digitizes and transmits the path from the production of programs such as video and music to viewers, so that it is more resilient than the analog method, and it is possible to provide high quality screen, sound, and additional data services. In addition, as broadcasting becomes digital, it is possible to transmit a CD (Compact Disk) level sound quality and various data and images. In particular, the DMB can be used not only as a DMB dedicated terminal device but also as a dual terminal device by implementing a DMB module and a mobile communication module in one terminal device. Such a DMB is regarded as a medium that can facilitate the implementation of interactive multimedia. The DMB system provides a method for overcoming the limitations of information sharing in the conventional analog broadcasting by providing various information in the image and sound source transmitted through digital data.

In addition, the mobile communication system has become easier to implement multimedia with the appearance of the third generation mobile communication system such as IMT2000. The third generation mobile communication system is a remarkable technology improvement in the field of data communication, and the data processing speed and the amount of data that can be processed have increased in comparison with the conventional mobile communication. This improvement in data processing capability has provided an opportunity to provide users with a mobile communication terminal with multimedia services such as high-quality video and music and data communication such as wireless Internet. In addition, like a DMB system, a mobile communication system can communicate data between a network and a terminal, and can provide additional information when providing a video or music to a user. In the case of the wireless Internet, the user can use a terminal device such as a laptop or PDA (PDP) to access a public data communication system such as the Internet regardless of a place or time. I prepared. In addition, recently, the service test for the opening of the DMB service is being carried out through a mobile terminal installed on a bus in Gwanak-gu, Seoul.

However, the DMB broadcasting service in the current mobile communication does not implement the bidirectional broadcasting service which is one of its great features. Channels allocated in Korea to provide DMB service are channels 8 and 12 which are not used among existing VHF channels. Each channel has a bandwidth of 6MHz, and one channel will accommodate three channels of DMB channels, for a total of six channels. As such, three channels can be accommodated in one broadcast channel because the bandwidth of one DMB channel is approximately 1.536 MHz. A data structure for transmitting broadcast data on this DMB channel is called a multiplex or ensemble, and is composed of an information area including information such as broadcast and frequency and a data area for actual broadcast. 1 is a diagram illustrating one multiplex, and as described above, one multiplex includes an information area and a data area.

2 is a diagram illustrating a DMB channel allocated to one broadcast channel.

Referring to FIG. 2, channels except for 8 and 12 are used as existing VHF channels. Channels 8 and 12 accommodate three DMB channels 1, respectively. Each of these DMB channels has a bandwidth of 1.536 MHz, and the bandwidth actually used for broadcasting is about 1.1 MHz. This is because an error correction code or information is transmitted for stability of data transmission and reception for broadcasting. A guard band 2 is set between each DMB channel 1 to prevent crosstalk between frequencies, and each DMB channel 1 is set at intervals as shown in the figure.

The DMB adopts the Eureka-147 EN 300, 401 standard, which is the European Digital Audio Broadcasting (DAB) standard. In the DAB used in Europe, the recent development of compression technology such as H-264 has allowed DMB to become practical as more data can be transmitted over existing bandwidth. The data format of this Eureka-147 standard is shown in FIG. The E-147 is composed of one multiplex as described above. The data contained in the multiplex is audio, video, still picture, text information, and the like. Compression techniques for transmitting them must be defined, and Bit Sliced Arithmatic Coding (BSAC), which is part 10 of the MPEG4 specification for audio compression and H.264 for video compression, is used. Here, a compression technique such as MPEG4 is called middleware, and it is clear that a multiplex representing a data structure is a different concept as a physical layer.

The above-described DMB broadcasts still focus on one-way transmission, i. However, DMB is easy to implement bidirectional because all data is digitized and transmitted. This is because various information data and link data can be transmitted together with the broadcast data, and processing at the receiving terminal is easy.

However, recently, BIFS (Binary Information For Scene) has been used as a way to utilize these two-way features in a forum for DMB broadcasting. This is a middleware approach that adds a middleware configuration to provide two-way communication or services in addition to video and audio. However, this method defines only the services and methods to be implemented, and only pursues the splendor of broadcast services. The BIFS is from a next-generation broadcast forum involving multiple stations, Net & TV, and ALTI Cast, and requires at least two to three years to implement. In addition, when applying the BIFS, a high specification of the user terminal is required, and even when using a high-end terminal, there is a problem that a communication engine for communication between each other (Communication Engine) is required.

Accordingly, an object of the present invention is to provide a broadcast service system and method for implementing a two-way broadcast service using a terrestrial digital multimedia broadcasting and a mobile communication system.

In order to achieve the above object, the digital multimedia broadcasting system according to the present invention, in the digital multimedia broadcasting system, defines an undefined region in the fast information group included in the fast information channel defined by the Eureka-147 standard, and the region. Link data including link information connected to the broadcast related information in a; A broadcast service center for creating the digital multimedia broadcast data, the broadcast data related information, and the link data; A digital multimedia system for providing a user with the digital multimedia broadcast data, the broadcast data related information, and the link data added to the broadcast data from the broadcast service center; A mobile communication system for forming a communication channel for accessing the broadcast related information by the link data; And a mobile communication terminal for receiving the digital multimedia broadcasting and the link data, establishing a communication channel with the mobile communication system, and providing the broadcast related information received through the communication channel to a user.

The undefined area is the fast information group type number 2 to number 4.

The area is a data field of the fast information group, and the field includes an ensemble ID for identifying a multiplex channel, a service ID for distinguishing a broadcast program, and an application program for using the link data. An application ID, an active duration for limiting the output time of the link data, a link path for recording the link information, a pop-up message for notifying a user of the link data, and a fast information group different from the fast information group. Includes a FIG continuity for use of the informationation group together and a spare for future scalability.

The application program is an SMS, an SMS, a voice call, a WAT browser, a phone book application, and the like.

The mobile communication terminal includes a DMB module for receiving the digital multimedia broadcasting data and the link data, a memory for storing the link data and the application program, the broadcasting data and the broadcasting data related information. An output device for outputting a signal, a mobile communication module for establishing a communication channel with the mobile communication system for receiving the broadcast data related information, and controlling the DMB module, the mobile communication module, and an output device, And a control unit for extracting the link information from the mobile communication module to form a communication channel.

A digital multimedia broadcasting service method according to the present invention, comprising: defining an undefined region in a fast information group included in a fast information channel defined by the Eureka-147 standard; Creating link data including link information connected to the broadcast related information in the area; Creating the digital multimedia broadcasting data and the broadcasting data related information by a broadcasting service center; Providing a digital multimedia broadcasting data from the broadcasting service center, the broadcasting data related information, and the link data added to the broadcasting data to a mobile communication terminal of a user using a digital multimedia system; Establishing a communication channel for accessing the broadcast related information by the link data using a mobile communication system; Establishing the communication channel with the mobile communication system using the mobile communication terminal; Receiving the digital multimedia broadcasting and the link data via the communication channel; And providing the broadcast related information to a user.

Other objects and advantages of the present invention other than the above objects will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 4 to 9.

4 is a detailed view of the FIC of the DMB multiplex, and FIG. 5 is a detailed view of the MSC.

4 and 5, the DMB multiplex includes an FIC (Fast Information Chanel), which is an information area including control information and overhead information, and an MSC including data for broadcasting. (Main Service Chanel: hereinafter referred to as "MSC").

The FIC includes an information area including various information for distinguishing a plurality of video, audio and additional data, and link data for implementing a two-way broadcast service.

The link data is data for connecting the terminal of the user with information related to the broadcast data that the user watches to provide the interactive service. Here, the information related to the broadcast data means, for example, when the user is watching a celebrity introduction program, a picture, an image, a movie, a drama, etc. of the celebrity. The URL connecting the user and the terminal is representative and means information that provides a path for the user to access the data when the user wants to acquire the data.

The MSC has a middleware configuration that includes one or more video channels, one or more audio channels, and multiple separate data channels. The number of channels included in the MSC depends on the policies of each broadcaster. In order to transmit data for such a video channel, an audio channel and a separate data channel, the physical layer of the MSC is composed of a plurality of subchannels.

The sub channel includes data for each channel, and the length of one sub channel depends on the size and type of data contained therein. These subchannels are combined into data that constitutes each video, audio, and separate data channel by information stored in the FIC.

FIC stores various information for using MSC data as broadcast data and is used as a control signal. The FIC is composed of a plurality of fast information blocks (hereinafter referred to as "FIBs") and a plurality of FIG. (Hereinafter referred to as "FIG").

This FIG is composed of a FIG type (FIG Type) of about 3 bits, a data length (Length) of approximately 5 bits, and a FIG data field (FIG Data Field) that can be defined by the operator. The present invention newly defines this FIG under the FIC to implement the interactive multimedia DMB service.

The 3 bits of FIG determine the FIG type, and information on the transmission protocol between the transmitting end and the receiving end is stored. This FIG is currently defined as 3 bits, and can contain eight types of information. Currently defined and used FIG FIG. 0, 1, 5, 6, 7, FIG. 2, 3, 4 is not used. It is possible to implement the bidirectional DMB service of the present invention using the FIG Types 2, 3 and 4. This will be described later.

FIG Type Number FIG Type FIG Application 0 000 MCI and Part Of The SI One 001 Labels, etc. (Part Of The SI) 2 010 Reserved 3 011 Reserved 4 100 Reserved 5 101 FIC Data Channel (FIDC) 6 110 Conditional Access (CA) 7 111 In house

Table 1 is a table showing FIG type numbers, FIG 3 bits, and their respective assignments. Referring to Table 1, FIG type 1 is allocated for MCI (Multiplex Configuration Information: hereinafter referred to as "MCI") and SI (Service Identifier: hereinafter referred to as "SI").

The MCI records service component information composed of video, audio, and separate data data for constituting a specific channel among several channels included in the MSC, and information on subchannels constituting the corresponding channel.

The SI records detailed information on each service program, that is, various program related information such as broadcasting station information and program title.

FIDC (FIC Data Channel: hereinafter referred to as "FIDC") is a type for transmitting broadcast data using the FIC channel.

CA (Conditional Access) is a type allocated to define subscribers for the business model such as a paid service channel to define whether the corresponding service channel is playable.

In-House, like the 2, 3, and 4 types of FIG, is a type defined for a separate use by an arbitrary appointment between a DMB broadcast transmitter and a receiver. Here, the bidirectional DMB service of the present invention is implemented by using the above-described types 2, 3, and 4 of FIG.

These five FIG types are protocols for providing DMB broadcasting services and cannot be arbitrarily changed by a user or an operator. However, FIG types 2, 3, and 4 are user fields that do not use only space, and thus, in the present invention, link data or link related information is recorded in this portion to provide an interactive service.

As described above, FIGs 2, 3, and 4 are allocated only spaces and have not been used conventionally. In the present invention, the FIG 2, 3, 4 is utilized to provide a bidirectional DMB service.

For example, in the case of using a CDMA (Code Division Multi Access: "CDMA") type mobile communication system, FIG type number 2 is defined as CDMA. Once the FIG type number is determined, the length is determined. In the FIG data field, various types of data for bidirectional services are recorded in CDMA.

The data recorded in the FIG data field is firstly an ensemble ID (hereinafter referred to as "ID"), a service ID, an application ID, an active duration, a link path, and a pop up message. It is divided into Reserved.

The ensemble ID identifies a service channel and is used as a separator for providing link data suitable for the channel to a user who is watching a particular channel. For example, if the user is watching the MBC broadcast pro, a division value for checking the suitability relationship between the broadcast and the link data is recorded to confirm the link data for the MBC broadcast pro.

When a plurality of channels are formed in one multiplex, the service ID records a division value for determining whether the link data is suitable for the channel in order to provide link data suitable for the corresponding channel. For example, if the user is watching a food making pro, the link data is not provided with incorrect link data such as a photograph of a celebrity, and a division value for providing data suitable for broadcasting such as food ingredients is recorded.

The application ID is a division value for selecting various application programs so that the user can obtain desired data by each link data. For example, when broadcasting relationship data in the form of a still picture or an image is provided to a user who is watching, the application ID records a division value for a viewer program capable of acquiring a still picture or an image. The application program represented by this application ID includes SMS (Short Message Service), Call, Phone Book, URL Link (Wireless Application Protocol Browser) or MMS (Multimedia). Message Service) applications, and the like.

The active duration defines a time at which a message indicating that there is broadcast data related information to an application application program or a user is displayed. For example, when watching an advertisement for about 30 seconds, the display time recorded in the active duration or the driving time of the application program can be set shorter than this, and the driving and display time are recorded in the active duration.

A link path or a return path is substantial connection information to which broadcast data related information and a user's terminal can be connected. For example, if you use a WAP browser, this link path stores a URL. If you use SMS, MMS, or CLL, this link path stores a phone number. For example, when a user is watching a discussion program, when the user asks for the user's opinion in the broadcast, the user inputs his or her opinion in the terminal. The inputted opinion is connected to the broadcasting station by the link path and transmitted to the producing station delivering the corresponding broadcasting program, so that the inputted opinion is applied to the broadcasting. For example, in the case of a program that registers a viewer's opinion on a broadcast bulletin board, the link path (or return path) becomes a viewer bulletin URL address of the corresponding broadcast station program, and thus the viewer can register a post on the bulletin board. In addition, if you want to download the picture of the celebrity while watching the drama, go to the wireless Internet URL page where you can download the picture of the celebrity to download the picture.

The pop-up message stores data about a message for notifying the user when there is broadcast data related information in a broadcast program that the user is watching or any part of the broadcast program. This pop-up message can be expressed as text, an image containing an icon, or a simple video. For example, if the information is represented by an icon, a speaker-type icon is used when the broadcasting data related information is music or sound, and an icon representing a film is used when a picture or a video.

Whether the FIG is continuous or not is a data field for allowing subsequent or subsequent FIG data frames to be used continuously when the data size such as a pop-up message is large when the above-mentioned link data is transmitted and thus are not all recorded in one FIG.

Reserved (Reserved) is a data field that is left in consideration of future scalability.

In FIG. 5, video 1 and 2 audio 1 and 2 and other information (etc) indicate a service component. In order to actually implement video, audio, and other information of a service component, the physical layer is divided into a plurality of subchannels. Link information for grouping these subchannels and forming one video, audio or other information channel is recorded in the FIC and transmitted. In fact, the data formats coming and going on the system are these subfields with the Eureka-147 protocol, whereby the DMB service is provided to the user.

Hereinafter, a broadcast service system and method for implementing an interactive DMB service using the aforementioned multiplex will be described.

6 is a diagram illustrating a DMB broadcasting system according to the present invention.

Referring to FIG. 6, the broadcasting system of the present invention includes a broadcasting service center 5, a DMB system 7, a mobile communication system 9, and a mobile communication terminal 11.

The broadcast service center 5 produces broadcast data including link data and provides the same to the user. When broadcast data is produced from a broadcaster or the like and is provided to the broadcast service center 5, link data is added to the broadcast data and provided to the DMB system 7. To this end, the broadcast service center 5 is provided with an authoring tool (Authoring Tool or Editing Tool) that can add and produce link data, and is connected to the DMB system 7. It is also connected to the mobile communication system 9 to be connected with the user by the return path included in the link data.

The mobile communication terminal 11 provides a DMB service to the user, and allows the user to acquire broadcast data related information by link data stored in the broadcast data. To this end, the mobile communication terminal 11 receives DMB broadcast data and link data added thereto from the DMB system 7. Further, the mobile communication system 9 is connected so that the user acquires broadcast data related information by link data. In addition, the mobile communication terminal 11 decompresses the link data to inform the user that there is broadcast data related information by the link data, and includes a link data agent program for downloading or displaying the corresponding information.

The DMB system 7 provides the user's mobile communication terminal 11 with DMB broadcast data from the broadcast service center 5 and link data added thereto.

The mobile communication system 5 connects the broadcast service center 5 and the mobile communication terminal 11 in response to a connection request by the link data from the mobile communication terminal 11. In addition, when a user requests broadcast data related information, the user receives the broadcast data related information from the broadcast service center 5 and provides the same to the mobile communication terminal 11.

7 is a diagram illustrating the mobile communication terminal in more detail.

Referring to FIG. 7, the mobile communication terminal 11 includes a DMB module 13, a mobile communication module 15, a memory 19, an output device 21, and a controller 17.

The DMB module 13 receives the DMB broadcast data and the link data added thereto and provides the same to the controller 17. To this end, a DMB receiving antenna and a modulator for receiving broadcast data are provided.

The mobile communication module 15 forms a communication channel with the mobile communication system 9 so as to connect with an object corresponding to the link path recorded in the link data under the control of the control unit 17.

The output device 21 outputs the DMB broadcast data, the pop-up message, and the broadcast data related information to the user under the control of the controller 17. To this end, a screen display device capable of representing an image, a speaker capable of outputting a sound source, and the like.

The memory 19 stores DMB broadcast data and link data, and an application program for driving the same is stored. In addition, a link data agent program for allowing a user to use the link data and the broadcast data related information is stored to provide the programs and data upon request of the controller 17.

The controller 17 provides the DMB broadcast data provided from the DMB module 13 to the output device 21, and determines whether to use the link data received together with the DMB broadcast data. The controller 17 determines an ensemble ID, a service ID, an application ID, and an active duration of FIG to determine whether link data is used. In addition, if there is broadcast data related information, the connection path by the link path is determined so that the mobile communication module 15 forms a communication channel connected to the corresponding connection path.

The apparatus may further include an input device for receiving a command for receiving broadcast data related information from a user.

8 is a diagram illustrating a bidirectional DMB service method according to the present invention.

Referring to FIG. 8, a user receives DMB broadcast data and link data through the mobile communication terminal 11 to watch a broadcast. Here, the DMB broadcast data and link data refer to data created and added from the broadcast service center 5 and completed. (S1)

When the broadcast data is received, the DMB module 13 of the mobile communication terminal 11 provides the DMB broadcast data and link data to the controller 17. The controller 17 preferentially decodes the FIC of the link data. Here, if the demodulator is in the DMB module 13, this step is carried out in the DMB module 13, and the demodulated data is provided to the control unit 17 (S2).

When demodulating the FIC, the controller 17 determines whether link data is added. That is, if the FIG type is 0, 1, 5, 6, or 7, the controller 17 determines that the decoded data is DMB broadcast data. If the FIG type is 2, 3, or 4, the controller 17 determines that the decoded data is link data. To judge. Here, the type of FIG is defined by an operator. For example, 2 is a CDMA-based terminal, 3 is GSM (Global System For Mobile Telecommunication: hereinafter referred to as "GSM"), and 4 is TDMA (Time Division Multiple Access: hereinafter). And "TDMA". In describing an embodiment of the present invention, a description will be mainly given of CDMA-based communication of FIG. If it is determined that link data is added, the controller 17 determines whether the link data is of a type compatible with the mobile communication terminal 11. That is, when link data in which the FIG type is set to 4 (that is, TDMA) enters the CDMA terminal, the control unit 17 determines that the CDMA terminal is not compatible with the CDMA terminal and determines that there is no link data. On the other hand, if it is determined that the FIG type is set to 2 (that is, CDMA), the controller 17 determines that link data is added (S3).

Upon determining whether link data exists, the controller 17 decodes the MSC after FIG. That is, each subchannel of the MSC is combined to be one broadcast channel using the header information of the FIC (S4).

When the MSC is decoded, the controller 17 decodes the audio / video data by using a defined compression standard and outputs the output to the output device 21 so that the user can watch it (S5, S6).

On the other hand, if it is determined in step S3 that the FIG type is 2 and link data is received, a step for processing by a procedure different from the DMB broadcast data is performed (S31).

The controller 17 decodes the link data provided from the DMB module 13. (S32) Here, when the CDMA module 15 can decode the link data, the controller 17 provides the DMB module 13. The link data can be provided to the CDMA module 15 to decode the link data (S32).

When the link data is decoded, the controller 17 checks the ensemble ID or service ID to determine whether the user is watching a DMB broadcast corresponding to the received link data (S33).

If it is determined that the link data and the broadcast data being viewed are compatible, the controller 17 checks the application ID and executes an application program for using the link data. (S34) In step S34, the application for using the link data When the program is executed, the pop-up message recorded in the FIG data field by the application program is provided to the user through the output device 21 (S34).

On the other hand, if the ensemble ID or service ID does not match the broadcast data being viewed, the corresponding link data is not used (S40).

When the application program is driven, the controller 17 waits until there is a user input or a time recorded in the active duration has elapsed. Here, when the active duration has elapsed, it is assumed that there is no user input, the output of the pop-up message is stopped, and the link data is not used. When the user inputs a command for receiving broadcast data related information to the input apparatus, the application program uses the link path information of the FIG data field so that the mobile communication module 15 forms a communication channel under the control of the controller 17. do. When the communication channel is formed to receive broadcast data related information, the mobile communication module 17 provides the received information to the controller 17. (S35)

When receiving the broadcast data related information from the mobile communication module 17, the controller 17 stores it in the memory 19 or outputs it through the output device 21 (S36).

When the storage or output ends, the controller 17 waits for receiving the other link data, and the user continues to watch the DMB broadcast. (S6)

Here, the step of decoding the link data (S32) from the user to confirm or store in the memory is preferably performed by a link data agent program that controls each procedure to be processed in the various mobile communication terminal (11). . In this case, the link data agent program is executed by the control unit 17 when receiving the link data, and proceeds with the above-described link data processing procedures (S32 to S36) and selects and executes the application program.

When the above-described link path is a specific format, for example, HTML (Hyper Text Markup Language) or XML (eXtensible Markup Language), a parsing engine is required to express it in a language output from the mobile communication terminal 11.

9 is a view showing an example of a service providing method of the present invention.

Referring to FIG. 9, a user views DMB broadcast through the output device 21 of the mobile communication terminal 11. When the link data is received while watching, the icon representing the film is activated on the output device 21 as shown in FIG. 9B, and a pop-up message is output at the lower end. When the user selects a menu through the input device, as shown in FIG. 9C, the user is automatically connected to an access address (eg, a URL address) corresponding to a link path included in the link data. When the user selects the broadcast data related information to be selected, the broadcast data related information is downloaded through a communication channel formed with the mobile communication system 9 as shown in FIG. 9D. At this time, it is preferable that the user watches DMB broadcasting while watching the download status. When the download is completed, as shown in FIG. 9E, a message indicating the completion of the download is output through the output device 21, and the downloaded broadcast data related information is stored in the memory 21. The user checks the broadcasting data related information downloaded after or during DMB viewing as shown in FIG. 9F. 9E is a diagram illustrating an example of an icon displayed on an output device.

The present invention utilizes the FIC information region already allocated in the physical layer, that is, the Eureka-147 standard, rather than the middleware approach, which is the conventional approach, by the above-described method. It is possible to implement a broadcast service. In particular, by using the unset region of FIG included in the FIC, it is compatible with the existing system and there is no fear of side effects. In addition, since there is no definition of a middleware service component or a field, it is possible to implement an interactive DMB broadcasting service without developing a new communication engine. In addition, since it is possible to be parallel with the middleware service method, it becomes possible to provide a more diverse and high quality service to the user.

As described above, the bidirectional DMB broadcasting service system and method according to the present invention can easily provide the bidirectional DMB broadcasting service by using the Eureka-147 standard.

In addition, it is possible to provide a bidirectional DMB broadcasting service using a conventional mobile communication and DMB system without defining a new field or developing a new communication engine. In addition, the cost burden and side effects due to the definition of a new field or the development of a new engine can be reduced, and it can be combined with these to provide a higher quality broadcasting service.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (7)

In the digital multimedia broadcasting service system, Link data defining an undefined region in the fast information group included in the fast information channel defined by the Eureka-147 standard, wherein the link data includes link information connected to the broadcast related information; A broadcast service center for creating the digital multimedia broadcast data, the broadcast data related information, and the link data; A digital multimedia system for providing a user with the digital multimedia broadcasting data, the broadcasting data related information, and the link data added to the broadcasting data from the broadcasting service center; A mobile communication system for forming a communication channel for accessing the broadcast related information by the link data; And a mobile communication terminal configured to receive the digital multimedia broadcasting and the link data, form a communication channel with the mobile communication system, and provide the user with the broadcast related information received through the communication channel. Multimedia Broadcasting Service System. The method of claim 1, And the undefined area is the fast information group type number 2 to 4. The method of claim 1, The undefined area is a digital multimedia broadcasting service system, characterized in that the in-house (In-House) of the fast information group type number 7. The method of claim 1, The area is A data field of the fast information group, The field includes an ensemble ID for identifying a multiplex channel, A service ID for identifying a broadcast program, An application ID for selecting an application program for using the link data; An active duration for limiting an output time of the link data; A link path in which the link information is recorded; A pop-up message for notifying the user of the contents of the link data; Whether or not the FIG (FIG) sequence for using the fast information group and another fast information group together; Digital multimedia broadcasting service system characterized in that it comprises a preliminary part in consideration of future determinism. The method of claim 4, wherein The application program Digital multimedia broadcasting service system, characterized in that the SMS (MMS), MMS (MMS), voice calls, WAT Browser, phone book applications and the like. The method of claim 1, The mobile communication terminal A DMB module for receiving the digital multimedia broadcasting data and the link data; A memory for storing the link data and the application program; An output device for outputting the broadcast data and the broadcast data related information; A mobile communication module for establishing a communication channel with the mobile communication system for receiving the broadcast data related information; And a controller for controlling the DMB module, the mobile communication module, and an output device, extracting the link information from the link data, and allowing the mobile communication module to form a communication channel. Service system. In the digital multimedia broadcasting service, Defining an undefined region within the fast information group included in the fast information channel defined by the Eureka-147 standard; Creating link data including link information connected to the broadcast related information in the area; Creating the digital multimedia broadcasting data and the broadcasting data related information; Providing the digital multimedia broadcasting data, the broadcasting data related information, and the link data added to the broadcasting data to a user's mobile communication terminal; Establishing a communication channel for accessing the broadcast related information by the link data; Receiving the digital multimedia broadcasting data and the link data through the communication channel; And providing the broadcast related information to a user.

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