KR20060012510A - Base of ip dmb data translation apparatus and method for dmb receiving system using that - Google Patents

Base of ip dmb data translation apparatus and method for dmb receiving system using that Download PDF

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KR20060012510A
KR20060012510A KR1020040061224A KR20040061224A KR20060012510A KR 20060012510 A KR20060012510 A KR 20060012510A KR 1020040061224 A KR1020040061224 A KR 1020040061224A KR 20040061224 A KR20040061224 A KR 20040061224A KR 20060012510 A KR20060012510 A KR 20060012510A
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dmb
data
stream
information
conversion
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KR100626665B1 (en
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김우석
배병준
이광순
함영권
이수인
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한국전자통신연구원
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/76—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet
    • H04H60/81—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself
    • H04H60/82—Arrangements characterised by transmission systems other than for broadcast, e.g. the Internet characterised by the transmission system itself the transmission system being the Internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4381—Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/64—Addressing
    • H04N21/6405—Multicasting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/64322—IP

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

본 발명은 IP 기반의 DMB 데이터 변환 장치 및 그 방법과 그를 이용한 DMB 수신 시스템에 관한 것임.The present invention relates to an IP-based DMB data conversion apparatus and method and a DMB receiving system using the same.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

본 발명은 DMB 방송과 IP 기반 서비스 모두에 대해 IP로 접근하는 방식을 사용함으로써 DMB 방송 컨텐츠와 IP 기반 서비스를 통합하여 사용자에게 전달할 수 있도록 하는, IP 기반의 DMB 데이터 변환 장치 및 그 방법과 그를 이용한 DMB 수신 시스템을 제공하는데 그 목적이 있음.The present invention provides an IP-based DMB data conversion apparatus and method and method using the same to deliver DMB broadcasting contents and IP-based services to users by using an IP approach to both DMB broadcasting and IP-based services. The purpose is to provide a DMB receiving system.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

본 발명은, 아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 장치에 있어서, 외부로부터 입력되는 제어정보(FIC)를 분석하여 스트림 변환에 필요한 정보를 수집하고, 수집된 정보를 이용하여 스트림 변환수단을 제어하며, DMB 어플리케이션에 세션 정보를 제공하기 위한 제어수단; 및 DMB 앙상블의 각 멀티미디어 데이터를 IP 형식의 스트림으로 변환한 후, 멀티캐스트 또는 유니캐스트를 통해 단말 내부로 전송하는 상기 스트림 변환수단을 포함한다.The present invention, in the IP (IP) -based digital multimedia broadcasting (DMB) data conversion apparatus, by analyzing the control information (FIC) input from the outside to collect the information necessary for stream conversion, the stream using the collected information Control means for controlling the conversion means and providing session information to the DMB application; And the stream converting means for converting each multimedia data of the DMB ensemble into a stream of an IP format and transmitting the same to the terminal through multicast or unicast.

4. 발명의 중요한 용도4. Important uses of the invention

본 발명은 DMB 수신 시스템 등에 이용됨.The present invention is used in the DMB receiving system.

디지털 멀티미디어 방송(DMB), IP(Internet Protocol), IP 프로토콜 스택, 통신망, 연동, FIC, 세션 정보Digital multimedia broadcasting (DMB), IP (Internet Protocol), IP protocol stack, communication network, interworking, FIC, session information

Description

아이피 기반의 디지털 멀티미디어 방송 데이터 변환 장치 및 그 방법과 그를 이용한 디지털 멀티미디어 방송 수신 시스템{Base of IP DMB data translation apparatus and method for DMB receiving system using that} IP-based digital multimedia broadcasting data converting apparatus and method and digital multimedia broadcasting receiving system using the same {Base of IP DMB data translation apparatus and method for DMB receiving system using that}             

도 1 은 종래 DMB-통신망 연동을 위한 DMB 수신 단말의 구성예시도, 1 is an exemplary configuration diagram of a DMB receiving terminal for interworking a conventional DMB-communication network;

도 2 는 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템의 일실시예 구성도, 2 is a diagram illustrating an embodiment of a DMB receiving system using an IP-based DMB data conversion apparatus according to the present invention;

도 3 은 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템의 일실시예 설명도, 3 is a diagram illustrating an embodiment of a DMB receiving system using an IP-based DMB data conversion apparatus according to the present invention;

도 4 는 상기 도 3의 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템 중 IP 기반의 DMB 데이터 변환 장치(DMB/IP 변환부)에 대한 일실시예 상세 구성도, 4 is a detailed configuration diagram of an IP-based DMB data conversion apparatus (DMB / IP conversion unit) of a DMB receiving system using the IP-based DMB data conversion apparatus of FIG. 3;

도 5 는 본 발명에 따라 DMB-통신망 연동을 위한 DMB 서비스 과정에 대한 일실시예 설명도, 5 is a diagram illustrating an embodiment of a DMB service process for interworking a DMB-communication network according to the present invention;

도 6 은 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템에서 루프백(Loopback)을 통해 단말 내부로 전송하는 과정을 나타낸 일실시예 설명도이다.FIG. 6 is a diagram illustrating an embodiment of a process of transmitting into a terminal through a loopback in a DMB receiving system using an IP-based DMB data conversion apparatus according to the present invention.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

21 : DMB 수신부 22 : DMB/IP 변환부21: DMB receiver 22: DMB / IP converter

23 : 통신망 연결부 24 : IP 프로토콜 스택23: network connection 24: IP protocol stack

25 : DMB 어플리케이션25: DMB Application

본 발명은 아이피(IP : Internet Protocol) 기반의 디지털 멀티미디어 방송(DMB : Digital Multimedia Broadcasting) 데이터 변환 장치 및 그 방법과 그를 이용한 디지털 멀티미디어 방송 수신 시스템(이하, DMB 수신 단말이라 함)에 관한 것으로, 더욱 상세하게는 DMB와 이동통신망을 사용하는 양방향 멀티미디어 서비스를 DMB 수신 시스템측에서 일관적으로 접근할 수 있도록 하는 IP 인터페이스를 제공하기 위한, IP 기반의 DMB 데이터 변환 장치 및 그 방법과 그를 이용한 DMB 수신 시스템에 관한 것이다. The present invention relates to an IP (Internet Protocol) based digital multimedia broadcasting (DMB) data conversion apparatus and method and a digital multimedia broadcasting receiving system using the same (hereinafter referred to as DMB receiving terminal) In detail, an IP-based DMB data conversion apparatus and method thereof, and a DMB receiving system using the same, for providing an IP interface for consistently accessing a DMB receiving system with a bidirectional multimedia service using a DMB and a mobile communication network. It is about.

디지털 방송의 발달은 방송의 고품질화 외에도 데이터 방송과 같은 새로운 개념의 서비스를 가능하게 하고 있다. 특히, 유/무선 인터넷과 같은 통신망의 발달과 맞물려 방송 통신 융합이라는 새로운 형태의 기술적 시도가 이루어지고 있는 실정이다.The development of digital broadcasting enables new concept services such as data broadcasting in addition to high quality broadcasting. In particular, in conjunction with the development of communication networks such as wired and wireless Internet, a new form of technological attempt to converge broadcasting and communication is being made.

특히, 이동 멀티미디어 방송인 DMB의 경우 이동하면서 방송 서비스를 제공 받을 수 있다는 측면에서 기존 CDMA 이동 전화망과의 연동에 대한 필요성이 부각되고 있다. 멀티미디어 데이터는 상대적으로 저렴한 DMB 망을 통해 브로드캐스팅하고, 사용자 각각에 대한 요구 사항은 양방향 통신이 가능한 CDMA망을 사용함으로써 보다 효율적으로 방송 서비스를 제공할 수 있게 되기를 기대하고 있는 것이다.In particular, in the case of DMB which is a mobile multimedia broadcasting, there is a need for interworking with an existing CDMA mobile telephone network in that a broadcasting service can be provided while moving. Multimedia data is broadcasted through a relatively inexpensive DMB network, and the demand for each user is expected to provide a broadcast service more efficiently by using a CDMA network capable of bidirectional communication.

도 1 은 종래 DMB-통신망 연동을 위한 DMB 수신 단말의 구성예시도로서, DMB와 통신망을 연동하기 위한 기존 방법을 나타낸 것이다.1 is an exemplary configuration diagram of a DMB receiving terminal for interworking with a conventional DMB-communication network, and illustrates an existing method for interworking a DMB and a communication network.

도 1에 도시된 바와 같이, DMB 수신 단말은 DMB 송신 시스템으로부터 DMB 방송을 수신하기 위한 DMB 수신부와, DMB 어플리케이션, 그리고, 인터넷에 연결하기 위한 IP 프로토콜 스택과 하부 프로토콜로 구성된다.As shown in FIG. 1, the DMB receiving terminal includes a DMB receiving unit for receiving DMB broadcasting from a DMB transmission system, a DMB application, and an IP protocol stack and a lower protocol for connecting to the Internet.

이러한 구조에서는 DMB 수신부를 통해 전달받은 DMB 컨텐츠와 IP 프로토콜 스택을 통해 전달받은 IP 데이터라는 서로 상이한 매체를 어플리케이션 차원에서 직접 연동시켜야 한다는 어려움이 존재한다.In such a structure, there is a difficulty in directly interfacing different media such as DMB contents delivered through the DMB receiver and IP data delivered through the IP protocol stack at the application level.

또한, 어플리케이션 차원에서 연동 과정을 처리해야 하기 때문에 컨텐츠가 전송되는 매체가 변하는 경우 매번 연동 처리 방법이 달라지고, DMB 어플리케이션 작성이 힘들어진다는 문제점이 있다.In addition, since the interworking process needs to be processed at the application level, there is a problem in that the interworking processing method is changed every time the content transmission medium is changed, and it is difficult to create a DMB application.

본 발명은 상기 문제점을 해결하기 위하여 제안된 것으로, DMB 방송과 IP 기반 서비스 모두에 대해 IP로 접근하는 방식을 사용함으로써 DMB 방송 컨텐츠와 IP 기반 서비스를 통합하여 사용자에게 전달할 수 있도록 하는, IP 기반의 DMB 데이터 변환 장치 및 그 방법과 그를 이용한 DMB 수신 시스템을 제공하는데 그 목적이 있다.The present invention has been proposed to solve the above problems, by using an IP access method for both DMB broadcasting and IP-based services to integrate the DMB broadcasting content and IP-based services to deliver to the user, IP-based An object of the present invention is to provide a DMB data conversion apparatus, a method thereof and a DMB receiving system using the same.

본 발명의 다른 목적 및 장점들은 하기의 설명에 의해서 이해될 수 있으며, 본 발명의 실시예에 의해 보다 분명하게 알게 될 것이다. 또한, 본 발명의 목적 및 장점들은 특허 청구 범위에 나타낸 수단 및 그 조합에 의해 실현될 수 있음을 쉽게 알 수 있을 것이다.
Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

상기 목적을 달성하기 위한 본 발명의 장치는, 아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 장치에 있어서, 외부로부터 입력되는 제어정보(FIC)를 분석하여 스트림 변환에 필요한 정보를 수집하고, 수집된 정보를 이용하여 스트림 변환수단을 제어하며, DMB 어플리케이션에 세션 정보를 제공하기 위한 제어수단; 및 DMB 앙상블의 각 멀티미디어 데이터를 IP 형식의 스트림으로 변환한 후, 멀티캐스트 또는 유니캐스트를 통해 단말 내부로 전송하는 상기 스트림 변환수단을 포함하여 이루어진 것을 특징으로 한다.The apparatus of the present invention for achieving the above object, in the IP-based digital multimedia broadcasting (DMB) data conversion apparatus, by analyzing the control information (FIC) input from the outside to collect the information required for stream conversion Control means for controlling the stream conversion means by using the collected information and providing session information to the DMB application; And converting the multimedia data of the DMB ensemble into a stream in the IP format, and transmitting the stream into the terminal through multicast or unicast.

또한, 본 발명의 방법은, 아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 방법에 있어서, 상기 DMB 데이터로부터 스트림 변환에 필요한 정보를 수집하는 정보 수집단계; 상기 수집된 정보를 이용하여 상기 DMB 데이터를 IP 형식의 데이터로 변환하는 스트림 변환단계; 및 상기 DMB 데이터의 각 멀티미디어 특성에 따라, 상기 변환된 데이터를 소정의 전송방식(멀티캐스트 또는 유니캐스트)을 통해 수신 단말 내부로 전송하는 전송단계를 포함하여 이루어진 것을 특징으로 한다.In addition, the method of the present invention, IP (IP) -based digital multimedia broadcasting (DMB) data conversion method, the information collection step of collecting information necessary for stream conversion from the DMB data; A stream conversion step of converting the DMB data into IP format data using the collected information; And transmitting the converted data into a receiving terminal through a predetermined transmission scheme (multicast or unicast) according to the multimedia characteristics of the DMB data.

한편, 본 발명은, 아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 장치를 이용한 DMB 수신 시스템에 있어서, 외부로부터 전달된 DMB 데이터와 제어정보(FIC)를 수신하기 위한 DMB 수신수단; 상기 DMB 수신수단을 통해 전달된 DMB 데이터를 제어정보(FIC)를 이용하여 IP 형식의 데이터로 변환하기 위한 DMB/IP 변환수단; 인터넷을 통한 양방향 서비스를 위해, 통신망을 통해 IP 프로토콜 스택과 연결하기 위한 통신망 연결수단; 및 사용자에게 DMB 및 양방향 서비스를 제공하고, 서비스에 대한 접근이 모두 상기 IP 프로토콜 스택을 통하여 이루어지게 하는 DMB 응용수단을 포함하여 이루어진 것을 특징으로 한다.On the other hand, the present invention, a DMB receiving system using an IP (IP) -based digital multimedia broadcasting (DMB) data conversion apparatus, DMB receiving means for receiving DMB data and control information (FIC) transmitted from the outside; DMB / IP conversion means for converting the DMB data transmitted through the DMB receiving means into data in IP format using control information (FIC); Network connection means for connecting to an IP protocol stack via a communication network for bidirectional service over the Internet; And a DMB application means for providing a DMB and a bidirectional service to a user, and accessing the service is made through the IP protocol stack.

상술한 목적, 특징 및 장점은 첨부된 도면과 관련한 다음의 상세한 설명을 통하여 보다 분명해 질 것이며, 그에 따라 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 용이하게 실시할 수 있을 것이다. 또한, 본 발명을 설명함에 있어서 본 발명과 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에 그 상세한 설명을 생략하기로 한다. 이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 일실시예를 상세히 설명하기로 한다.The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2 는 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템(이하, DMB 수신 단말이라 함)의 일실시예 구성도이다.2 is a diagram illustrating an embodiment of a DMB receiving system (hereinafter, referred to as a DMB receiving terminal) using an IP-based DMB data conversion apparatus according to the present invention.

도 2에 도시된 바와 같이, 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치 (DMB/IP 변환부(22))를 이용한 DMB 수신 단말은, DMB 송신 시스템으로부터 전달된 디지털 멀티미디어 방송(DMB) 데이터(비디오, 오디오, 데이터 등)와 제어정보(FIC)를 수신하기 위한 DMB 수신부(21)와, DMB 수신부(21)를 통해 전달된 DMB 데이터를 제어 정보를 이용하여 IP 형식의 데이터로 변환하기 위한 DMB/IP 변환부(22)와, 인터넷을 통한 양방향 서비스를 위해, 통신망(이더넷(Ethernet)/CDMA와 같은 네트워크)을 통해 IP 프로토콜 스택(24)과 연결하기 위한 통신망 연결부(23)와, 최종 사용자에게 DMB 및 양방향 서비스를 제공하고, 이러한 서비스에 대한 접근이 모두 IP 프로토콜 스택(24)을 통하여 이루어지게 하는 DMB 어플리케이션(25)을 포함한다. As shown in FIG. 2, the DMB receiving terminal using the IP-based DMB data conversion apparatus (DMB / IP conversion unit 22) according to the present invention is a digital multimedia broadcasting (DMB) data transmitted from the DMB transmission system ( DMB receiver 21 for receiving video, audio, data, etc.) and control information (FIC), and DMB for converting DMB data transmitted through the DMB receiver 21 into IP data using control information. / IP conversion section 22, a network connection section 23 for connecting to the IP protocol stack 24 via a communication network (network such as Ethernet / CDMA) for bidirectional service over the Internet, and end users DMB application 25 to provide DMB and two-way services, and to access all of these services through the IP protocol stack 24.

여기서, DMB 수신부(21)는 일반적인 DMB 수신 단말에서와 같이 DMB 송신 시스템으로부터 송출된 DMB RF(Radio Frequency) 신호를 수신하여 멀티미디어 데이터(비디오, 오디오, 데이터 등)를 포함하는 방송 데이터를 얻고, FIC(Fast Information Channel)로부터 이들 방송의 물리적, 논리적인 구성을 나타내는 제어 정보인 MCI(Multiplex Configuration Information) 및 SI(System Information)를 분리하여 DMB/IP 변환부(22)로 전송한다.Here, the DMB receiving unit 21 receives a DMB RF (Radio Frequency) signal transmitted from a DMB transmission system as in a general DMB receiving terminal to obtain broadcast data including multimedia data (video, audio, data, etc.), and FIC The MCI (Multiplex Configuration Information) and SI (System Information), which are control information indicating the physical and logical configuration of these broadcasts, are separated from the Fast Information Channel and transmitted to the DMB / IP conversion unit 22.

DMB/IP 변환부(22)는 DMB 수신부(21)로부터 전달받은 방송 데이터를 제어 정보를 이용하여 IP 형식의 데이터로 변환하는 역할을 한다. The DMB / IP conversion unit 22 converts the broadcast data received from the DMB receiving unit 21 into data in IP format using control information.

상기한 바와 같은 구조를 갖는 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템의 동작을 상세하게 설명하면 후술되는 도 3 및 도 4와 같다.The operation of the DMB receiving system using the IP-based DMB data conversion apparatus according to the present invention having the above structure will be described in detail with reference to FIGS. 3 and 4 described below.

도 3 은 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템의 일실시예 설명도이다.3 is a diagram illustrating an embodiment of a DMB receiving system using an IP-based DMB data conversion apparatus according to the present invention.

도면에 도시된 바와 같이, DMB/IP 변환부(22)의 제어부(32)에서는 FIC 분석부(404)를 통해 FIC에 존재하는 MCI 및 SI를 이용하여 DMB 앙상블(Ensemble)의 구조를 분석하고 스트림 변환에 필요한 정보를 수집한다. As shown in the figure, the control unit 32 of the DMB / IP conversion unit 22 analyzes the structure of the DMB ensemble and streams using the MCI and SI present in the FIC through the FIC analysis unit 404. Collect the information needed for the transformation.

변환 컨트롤러(405)는 상기 수집된 정보를 사용하여 하기에 기술될 DMB-IP 변환부(22)의 IP 스트림 생성부(402) 및 IP 스트림 전송부(403)를 제어한다. The conversion controller 405 uses the collected information to control the IP stream generator 402 and the IP stream transmitter 403 of the DMB-IP converter 22 to be described below.

또한, 세션 정보 생성부(406)는 이들 정보를 토대로 DMB 서비스를 위한 세션 정보를 제공하여 DMB 어플리케이션이 DMB에서 원하는 방송 컨텐츠를 선택할 수 있도록 한다. 이러한 세션 정보들은 SAP(Session Announcement Protocol) 또는 SDR(Session Description Protocol)과 같은 세션 정보 프로토콜 등을 사용하거나 XML(eXtensible Markup Language)과 같은 메타 정보 언어를 사용하여 DMB 어플리케이션에 전달될 수 있다. 필요에 따라 제어부(32)는 세션의 추가 정보 및 세션 설정에 대한 DMB 어플리케이션의 요구를 수용할 수 있다.In addition, the session information generation unit 406 provides the session information for the DMB service based on the information so that the DMB application can select the desired broadcast content in the DMB. Such session information may be delivered to a DMB application using a session information protocol such as Session Announcement Protocol (SAP) or Session Description Protocol (SDR) or a meta information language such as XML (eXtensible Markup Language). If necessary, the control unit 32 may accommodate the request of the DMB application for session additional information and session establishment.

DMB/IP 변환부(22)의 DMB-IP 스트림 변환부(31)는 제어부(32)로부터 전달받은 정보들을 토대로 DMB 컨텐츠를 IP 형식의 스트림으로 변환하는 역할을 한다. 예를 들어, DMB 수신부(21)는 DMB 앙상블(Ensemble)로부터 비디오 데이터를 분리하여 DMB/IP 변환부(22)로 전달한다. 이 비디오 데이터는 압축된 비디오 스트림으로 DMB/IP 변환부(22)의 DMB 스트림 버퍼(401)에 임시적으로 저장된다. IP 스트림 생성부(402)에서는 DMB 스트림 버퍼(401)에 저장된 비디오 스트림을 전송 가능한 크기로 자르고(Segmentation) RTP(Real time Transport Protocol) 비디오 헤더를 붙 여 패킷을 생성한다. IP 스트림 전송부(403)에서는 IP 스트림 생성부(402)에서 만들어진 패킷을 루프백(Loopback)을 통해 단말 내부로 전송하게 된다. The DMB-IP stream converting unit 31 of the DMB / IP converting unit 22 converts the DMB contents into an IP format stream based on the information received from the control unit 32. For example, the DMB receiver 21 separates video data from the DMB ensemble and transfers the video data to the DMB / IP converter 22. This video data is temporarily stored in the DMB stream buffer 401 of the DMB / IP converter 22 as a compressed video stream. The IP stream generator 402 cuts the video stream stored in the DMB stream buffer 401 to a size that can be transmitted (Segmentation) and attaches a Real Time Transport Protocol (RTP) video header to generate a packet. The IP stream transmitter 403 transmits the packet generated by the IP stream generator 402 to the terminal through a loopback.

여기서, 루프백을 통해 단말 내부로 전송하는 과정(도 6 참조)에 대해 살펴보면, DMB/IP 변환부(22)는 루프백 주소(Loopback Address)를 통해 변환된 데이터를 단말 내부로 전송한다. 즉, 루프백 주소는 IP 주소로 127.0.0.1로, IP 프로토콜에서는 단말 자신으로 인식하는 주소이다. 멀티캐스트의 경우에도 멀티캐스트 루프백 옵션을 통해 단말 자신이 속한 그룹 주소의 패킷을 받을 수 있다. 이렇게 루프백으로 전송을 하면, 그 데이터는 운영체제(OS) 내부의 IP 프로토콜 스택을 타고 DMB 응용 프로그램에 전달된다. Here, referring to the process (see FIG. 6) for transmitting to the terminal through the loopback, the DMB / IP converter 22 transmits the converted data through the loopback address to the terminal. That is, the loopback address is 127.0.0.1 as an IP address, and is an address recognized by the terminal itself in the IP protocol. In the case of multicast, a packet of a group address to which a terminal belongs may be received through a multicast loopback option. In this loopback, the data is passed to the DMB application via the IP protocol stack inside the operating system (OS).

DMB 컨텐츠를 IP 형식으로 변환하는데는 컨텐츠가 가진 특성에 맞는 IP 응용계층의 프로토콜을 사용한다. 예를 들어, 스트리밍 미디어의 특성을 가지는 비디오 및 오디오 컨텐츠는 RTP/UDP(User Datagram Protocol) 패킷 형식의 데이터로 변환될 수 있으며, 데이터 방송 컨텐츠는 HTTP(Hypertext Transfer Protocol)나 FTP(File Transfer Protocol)와 같은 프로토콜을 사용하는 패킷 형식으로 변환될 수 있다. IP 형식의 데이터로 변환된 DMB 방송 컨텐츠는 IP 스트림 전송부(403)에서 상기 언급한 프로토콜 특성에 따라 멀티캐스트 또는 유니캐스트를 통해 DMB 수신 단말 내부로 전송된다. RTP 형식의 오디오와 비디오 스트림은 멀티캐스트를 통해 전송되고, FTP나 HTTP 형식의 데이터는 유니캐스트를 통해 전송될 수 있다. To convert DMB content to IP format, the protocol of IP application layer suitable for the characteristics of the content is used. For example, video and audio content having the characteristics of streaming media may be converted into data in RTP / UDP (User Datagram Protocol) packet format, and data broadcast content may be Hypertext Transfer Protocol (HTTP) or File Transfer Protocol (FTP). Can be converted into a packet format using a protocol such as The DMB broadcast content converted into data in IP format is transmitted into the DMB receiving terminal through multicast or unicast according to the above-described protocol characteristic of the IP stream transmitter 403. Audio and video streams in RTP format are transmitted via multicast, and data in FTP or HTTP format can be transmitted via unicast.

DMB/IP 변환부(22)는 각 DMB 앙상블마다 임의의 IP를 지정하고 각 서비스 컴포넌트별로 포트 번호를 할당함으로써 DMB 어플리케이션이 IP 주소 형식을 통해 상 기 변환된 미디어 스트림에 접근할 수 있도록 한다. 이들 각 컨텐츠에 대한 IP 주소 정보는 DMB/IP 변환부(22)의 제어부(32)를 통해 DMB 어플리케이션으로 제공된다. The DMB / IP conversion unit 22 assigns a random IP for each DMB ensemble and assigns a port number for each service component so that the DMB application can access the converted media stream through the IP address format. The IP address information for each of these contents is provided to the DMB application through the control unit 32 of the DMB / IP conversion unit 22.

상기와 같은 방법을 통해 DMB 어플리케이션은 상기 IP 형식으로 변환되어 DMB 수신 단말 내부로 전송되는 DMB 컨텐츠를 일반 IP 망을 통해 제공되는 멀티미디어/데이터 서비스와 같은 방법으로 접근할 수 있다 Through the above method, the DMB application may access the DMB content converted into the IP format and transmitted into the DMB receiving terminal in the same manner as a multimedia / data service provided through a general IP network.

도 4 는 상기 도 3의 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템 중 IP 기반의 DMB 데이터 변환 장치(DMB/IP 변환부)에 대한 일실시예 상세 구성도이다.FIG. 4 is a detailed configuration diagram of an IP-based DMB data conversion apparatus (DMB / IP conversion unit) of a DMB receiving system using the IP-based DMB data conversion apparatus of FIG. 3.

도 4에 도시된 바와 같이, 본 발명에 따른 IP 기반의 DMB 데이터 변환 장치는, DMB 수신부(21)로부터 입력되는 제어정보(FIC)를 분석하여 스트림 변환에 필요한 정보를 수집하고, 수집된 정보를 이용하여 DMB-IP 스트림 변환부(31)를 제어하며, DMB 어플리케이션(25)에 세션 정보를 제공하기 위한 제어부(32)와, DMB 앙상블의 각 멀티미디어 데이터(IP 비디오 패킷, IP 오디오 패킷, IP 데이터 패킷 등)를 IP 형식의 스트림으로 변환한 후, 멀티캐스트 또는 유니캐스트를 통해 단말 내부로 전송하는 DMB-IP 스트림 변환부(31)를 포함한다.As shown in FIG. 4, the IP-based DMB data conversion apparatus according to the present invention analyzes control information (FIC) input from the DMB receiver 21 to collect information necessary for stream conversion and collects the collected information. A control unit 32 for controlling the DMB-IP stream conversion unit 31, providing session information to the DMB application 25, and each multimedia data (IP video packet, IP audio packet, IP data of the DMB ensemble). And a DMB-IP stream converting unit 31 for converting the packet into an IP format stream and then transmitting the packet to the terminal through multicast or unicast.

여기서, 제어부(32)는 DMB 수신부(21)로부터 전달되는 제어정보(FIC(MCI 및 SI))를 이용하여 DMB 앙상블(Ensemble)의 구조를 분석하고 스트림 변환에 필요한 정보를 수집하기 위한 FIC 분석부(404)와, FIC 분석부(404)를 통해 수집된 정보를 이용하여 DMB-IP 스트림 변환부(31)의 IP 스트림 생성부(402) 및 IP 스트림 전송부 (403)를 제어하기 위한 변환 컨트롤러(405)와, 상기 정보를 토대로 DMB 서비스를 위한 세션 정보를 제공하여 DMB 어플리케이션이 DMB에서 원하는 방송 컨텐츠를 선택할 수 있도록 하는 세션 정보 생성부(406)를 포함한다.Here, the controller 32 analyzes the structure of the DMB ensemble by using control information FIC (MCI and SI) transmitted from the DMB receiver 21 and collects information necessary for stream conversion. 404 and a conversion controller for controlling the IP stream generator 402 and the IP stream transmitter 403 of the DMB-IP stream converter 31 using the information collected by the FIC analyzer 404. 405 and a session information generation unit 406 that provides session information for a DMB service based on the information to allow a DMB application to select desired broadcast content in the DMB.

상기 세션 정보들은 SAP(Session Announcement Protocol) 또는 SDR(Session Description Protocol)과 같은 세션 정보 프로토콜 등을 사용하거나 XML과 같은 메타 정보 언어를 사용하여 DMB 어플리케이션에 전달될 수 있다. 필요에 따라 제어부(32)는 세션의 추가 정보 및 세션 설정에 대한 DMB 어플리케이션의 요구를 수용할 수 있다.The session information may be delivered to a DMB application using a session information protocol such as a Session Announcement Protocol (SAP) or a Session Description Protocol (SDR), or a meta information language such as XML. If necessary, the control unit 32 may accommodate the request of the DMB application for session additional information and session establishment.

그리고, DMB-IP 스트림 변환부(31)는 제어부(32)로부터 전달받은 정보들을 토대로 DMB 컨텐츠를 IP 형식의 스트림으로 변환한다. The DMB-IP stream converter 31 converts the DMB content into an IP format stream based on the information received from the controller 32.

즉, DMB-IP 스트림 변환부(31)는 DMB 수신부(21)로부터 전달되는 멀티미디어 데이터(비디오, 오디오, 데이터 등)를 임시적으로 저장하기 위한 DMB 스트림 버퍼(401)와, DMB 스트림 버퍼(401)에 저장된 스트림을 전송 가능한 크기로 자르고(Segmentation) 적합한 IP 응용 계층의 프로토콜 헤더를 붙여 패킷을 생성하기 위한 IP 스트림 생성부(402)와, IP 스트림 생성부(402)를 통해 생성된 DMB 데이터를 각 멀티미디어 특성에 부합하는 전송방식(멀티캐스트 또는 유니캐스트)을 통해 DMB 수신 단말 내부로 전송하는 IP 스트림 전송부(403)를 포함한다.That is, the DMB-IP stream converter 31 may include a DMB stream buffer 401 and a DMB stream buffer 401 for temporarily storing multimedia data (video, audio, data, etc.) transferred from the DMB receiver 21. An IP stream generator 402 for generating a packet by cutting the stream stored in the packet into a size that can be transmitted and attaching a protocol header of an appropriate IP application layer, and DMB data generated by the IP stream generator 402, respectively. IP stream transmission unit 403 for transmitting into the DMB receiving terminal through a transmission method (multicast or unicast) that conforms to the multimedia characteristics.

도 5 는 본 발명에 따라 DMB-통신망 연동을 위한 DMB 서비스 과정에 대한 일실시예 설명도이다.5 is a diagram illustrating an embodiment of a DMB service process for interworking a DMB-communication network according to the present invention.

도 5에 도시된 바와 같이, 상단은 상기 기술된 방법을 통한 DMB 서비스의 구 성을 나타낸 것으로, DMB/IP 변환부(22)를 가지는 DMB 수신 단말(52)은 DMB 및 IP 기반 서비스 모두를 IP라는 일관된 인터페이스를 통해 DMB 어플리케이션에 제공할 수 있다. As shown in FIG. 5, the upper portion shows the configuration of the DMB service through the above-described method, and the DMB receiving terminal 52 having the DMB / IP conversion unit 22 provides both DMB and IP-based services. Can be provided to DMB applications through a consistent interface.

이와 유사하게 도 5의 하단은 DMB/IP 변환부(22)를 DMB-인터넷 게이트웨이 서버(53)에 두어, IP 형식으로 변환된 DMB 데이터를 단말 내부가 아닌 외부 인터넷으로 내보냄으로서 DMB 수신 기능을 갖지 않는 일반 IP 단말도 DMB 서비스를 받을 수 있도록 한다.Similarly, at the bottom of FIG. 5, the DMB / IP conversion unit 22 is placed in the DMB-Internet gateway server 53, and the DMB data is converted into the IP format to the external Internet instead of inside the terminal. General IP terminal that does not receive DMB service.

상기한 바와 같이, 본 발명을 통해 DMB 수신 단말은 DMB 방송과 IP 기반 서비스 모두에 대해 IP로 접근하는 방법을 사용함으로써 보다 효율적으로 DMB 방송 컨텐츠와 IP 기반 서비스를 통합하여 사용자에게 전달할 수 있다. 또한, 상기 제시한 변환 방법을 DMB-인터넷 게이트웨이 서버에 적용함으로써 DMB 방송 수신 기능을 갖지 않는 일반 IP 기반 단말들도 DMB 서비스를 제공받을 수 있다. As described above, through the present invention, the DMB receiving terminal can more efficiently integrate DMB broadcasting contents and IP-based services and deliver them to the user by using an IP access method for both DMB broadcasting and IP-based services. In addition, by applying the above-described conversion method to a DMB-Internet gateway server, general IP-based terminals without a DMB broadcast reception function may also be provided with a DMB service.

따라서, DMB 송신 시스템으로부터 전송받은 DMB 앙상블(Ensemble)을 DMB-인터넷 게이트웨이 서버에 포함된 DMB/IP 변환부에서 DMB 데이터를 IP 형식으로 변환하여 인터넷을 통해 IP 멀티캐스팅하도록 함으로써, 일반 IP 기반 단말도 인터넷을 통해 DMB 컨텐츠를 수신할 수 있다.Therefore, a general IP-based terminal is also obtained by converting the DMB ensemble received from the DMB transmission system into DMB / IP conversion unit included in the DMB-Internet gateway server and converting the DMB data into an IP format for IP multicasting through the Internet. DMB content can be received over the Internet.

상술한 바와 같은 본 발명의 방법은 프로그램으로 구현되어 컴퓨터로 읽을 수 있는 형태로 기록매체(씨디롬, 램, 롬, 플로피 디스크, 하드 디스크, 광자기 디스크 등)에 저장될 수 있다. 이러한 과정은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있으므로 더 이상 상세히 설명하지 않기 로 한다.As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily carried out by those skilled in the art will not be described in more detail.

이상에서 설명한 본 발명은, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하므로 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니다.The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

상기와 같은 본 발명은, IP를 통해 DMB와 인터넷 모두에 연결됨으로써 효율적인 방송 통신 융합 작업을 수행할 수 있는 효과가 있다. 즉, 이미 잘 알려진 프로토콜인 IP를 인터페이스로 사용함으로써 개발자는 보다 적은 시간과 노력으로 DMB 어플리케이션 및 DMB 통신 융합 어플리케이션을 제작할 수 있다. 이를 토대로 DMB 서비스는 IP 망의 다양한 서비스와 연결될 수 있으며, 새로운 서비스도 창출할 수 있는 효과가 있다.As described above, the present invention has an effect of performing efficient broadcast communication convergence by connecting to both the DMB and the Internet through IP. In other words, by using IP, which is a well-known protocol as an interface, developers can produce DMB applications and DMB communication convergence applications with less time and effort. Based on this, DMB service can be connected with various services of IP network and new service can be created.

또한, 본 발명은 DMB/IP 변환 방법을 DMB-인터넷 게이트웨이 서버에 적용함으로써 DMB 수신 기능을 가지지 못한 일반 단말들도 IP 망을 통해 DMB 컨텐츠를 제공받기 때문에, 사용자들은 보다 다양한 방법을 통해 DMB 서비스를 제공받을 수 있는 효과가 있다.In addition, in the present invention, by applying the DMB / IP conversion method to the DMB-Internet gateway server, even general terminals, which do not have a DMB reception function, are provided with DMB contents through the IP network. There is an effect that can be provided.

Claims (9)

아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 장치에 있어서,In the IP-based digital multimedia broadcasting (DMB) data conversion apparatus, 외부로부터 입력되는 제어정보(FIC)를 분석하여 스트림 변환에 필요한 정보를 수집하고, 수집된 정보를 이용하여 스트림 변환수단을 제어하며, DMB 어플리케이션에 세션 정보를 제공하기 위한 제어수단; 및 Control means for analyzing the control information (FIC) input from the outside to collect information necessary for stream conversion, controlling the stream conversion means using the collected information, and providing session information to the DMB application; And DMB 앙상블의 각 멀티미디어 데이터를 IP 형식의 스트림으로 변환한 후, 멀티캐스트 또는 유니캐스트를 통해 단말 내부로 전송하는 상기 스트림 변환수단The stream converting means for converting each multimedia data of the DMB ensemble into a stream in the IP format, and then transmitting it to the terminal through multicast or unicast. 을 포함하는 IP 기반의 DMB 데이터 변환 장치.IP-based DMB data conversion device comprising a. 제 1 항에 있어서,The method of claim 1, 상기 제어수단은,The control means, DMB 수신부로부터 전달되는 제어정보(FIC(MCI 및 SI))를 이용하여 DMB 앙상블(Ensemble)의 구조를 분석하고 스트림 변환에 필요한 정보를 수집하기 위한 제어정보 분석부;A control information analyzer for analyzing a structure of the DMB ensemble and collecting information necessary for stream conversion by using control information FIC (MCI and SI) transmitted from the DMB receiver; 상기 제어정보 분석부를 통해 수집된 정보를 이용하여 상기 스트림 변환수단의 IP 스트림 생성부 및 IP 스트림 전송부를 제어하기 위한 변환 제어부; 및A conversion controller for controlling the IP stream generator and the IP stream transmitter of the stream conversion means by using the information collected by the control information analyzer; And 상기 정보를 토대로 DMB 서비스를 위한 세션 정보를 제공하여 상기 DMB 어플 리케이션이 DMB에서 원하는 방송 컨텐츠를 선택할 수 있도록 하는 세션 정보 생성부Session information generation unit for providing a session information for the DMB service based on the information to allow the DMB application to select the desired broadcast content in the DMB 를 포함하는 IP 기반의 DMB 데이터 변환 장치.IP-based DMB data conversion device comprising a. 제 2 항에 있어서,The method of claim 2, 상기 세션 정보는, The session information, SAP(Session Announcement Protocol) 또는 SDR(Session Description Protocol)과 같은 세션 정보 프로토콜을 사용하거나 메타 정보 언어(XML)를 사용하여 상기 DMB 어플리케이션에 전달되는 것을 특징으로 하는 IP 기반의 DMB 데이터 변환 장치.An IP-based DMB data conversion apparatus, which is delivered to the DMB application using a session information protocol such as a Session Announcement Protocol (SAP) or a Session Description Protocol (SDR) or using a meta information language (XML). 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 스트림 변환수단은, The stream converting means, 상기 DMB 수신부로부터 전달되는 멀티미디어 데이터(비디오, 오디오, 데이터)를 임시적으로 저장하기 위한 DMB 스트림 저장부;A DMB stream storage unit for temporarily storing multimedia data (video, audio, data) transferred from the DMB receiving unit; 상기 DMB 스트림 저장부에 저장된 스트림을 전송 가능한 크기로 자르고, 적합한 IP 응용 계층의 프로토콜 헤더를 붙여 패킷을 생성하기 위한 IP 스트림 생성부; 및An IP stream generator for cutting the stream stored in the DMB stream storage into a size that can be transmitted and generating a packet by attaching a protocol header of an appropriate IP application layer; And 상기 IP 스트림 생성부를 통해 생성된 DMB 데이터를 각 멀티미디어 특성에 부합하는 전송방식(멀티캐스트 또는 유니캐스트)을 통해 DMB 수신 단말 내부로 전송하는 IP 스트림 전송부IP stream transmission unit for transmitting the DMB data generated by the IP stream generation unit into the DMB receiving terminal through a transmission scheme (multicast or unicast) corresponding to each multimedia characteristic 를 포함하는 IP 기반의 DMB 데이터 변환 장치.IP-based DMB data conversion device comprising a. 아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 방법에 있어서,In the IP-based digital multimedia broadcasting (DMB) data conversion method, 상기 DMB 데이터로부터 스트림 변환에 필요한 정보를 수집하는 정보 수집단계;An information collecting step of collecting information required for stream conversion from the DMB data; 상기 수집된 정보를 이용하여 상기 DMB 데이터를 IP 형식의 데이터로 변환하는 스트림 변환단계; 및A stream conversion step of converting the DMB data into IP format data using the collected information; And 상기 DMB 데이터의 각 멀티미디어 특성에 따라, 상기 변환된 데이터를 소정의 전송방식(멀티캐스트 또는 유니캐스트)을 통해 수신 단말 내부로 전송하는 전송단계A transmitting step of transmitting the converted data into a receiving terminal through a predetermined transmission scheme (multicast or unicast) according to the multimedia characteristics of the DMB data 를 포함하는 IP 기반의 DMB 데이터 변환 방법.IP-based DMB data conversion method comprising a. 아이피(IP) 기반의 디지털 멀티미디어 방송(DMB) 데이터 변환 장치를 이용한 DMB 수신 시스템에 있어서, In the DMB receiving system using an IP-based digital multimedia broadcasting (DMB) data conversion device, 외부로부터 전달된 DMB 데이터와 제어정보(FIC)를 수신하기 위한 DMB 수신수단;DMB receiving means for receiving DMB data and control information (FIC) transmitted from the outside; 상기 DMB 수신수단을 통해 전달된 DMB 데이터를 제어정보(FIC)를 이용하여 IP 형식의 데이터로 변환하기 위한 DMB/IP 변환수단;DMB / IP conversion means for converting the DMB data transmitted through the DMB receiving means into data in IP format using control information (FIC); 인터넷을 통한 양방향 서비스를 위해, 통신망을 통해 IP 프로토콜 스택과 연결하기 위한 통신망 연결수단; 및Network connection means for connecting to an IP protocol stack via a communication network for bidirectional service over the Internet; And 사용자에게 DMB 및 양방향 서비스를 제공하고, 서비스에 대한 접근이 모두 상기 IP 프로토콜 스택을 통하여 이루어지게 하는 DMB 응용수단DMB application means to provide DMB and two-way services to users, and to access all services through the IP protocol stack 을 포함하는 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템.DMB receiving system using an IP-based DMB data conversion apparatus including a. 제 6 항에 있어서,The method of claim 6, 상기 DMB/IP 변환수단은, The DMB / IP conversion means, 상기 DMB 수신수단으로부터 입력되는 제어정보(FIC)를 분석하여 스트림 변환에 필요한 정보를 수집하고, 수집된 정보를 이용하여 스트림 변환부를 제어하며, DMB 어플리케이션에 세션 정보를 제공하기 위한 제어부; 및 A control unit for analyzing the control information (FIC) input from the DMB receiving unit to collect information necessary for stream conversion, controlling the stream conversion unit using the collected information, and providing session information to the DMB application; And DMB 앙상블의 각 멀티미디어 데이터를 IP 형식의 스트림으로 변환한 후, 멀티캐스트 또는 유니캐스트를 통해 단말 내부로 전송하는 상기 스트림 변환부The stream conversion unit converts each multimedia data of the DMB ensemble into an IP format stream and then transmits the multimedia data into the terminal through multicast or unicast. 를 포함하는 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템.DMB receiving system using an IP-based DMB data conversion apparatus including a. 제 6 항 또는 제 7 항에 있어서,The method according to claim 6 or 7, 상기 DMB/IP 변환수단은, The DMB / IP conversion means, 상기 변환된 IP 형식의 DMB 데이터를 상기 DMB 응용수단이 접근할 수 있도록 DMB 앙상블과 각 서비스 컴포넌트에 IP 주소 및 포트 번호를 할당하는 것을 특징으로 하는 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템.And a DMB ensemble and an IP address and a port number for each service component so that the DMB application means can access the converted DMB data in the IP format. 제 8 항에 있어서,The method of claim 8, 상기 DMB 응용수단은, The DMB application means, 상기 IP 형식으로 변환되어 상기 DMB 수신 단말 내부로 전송되는 DMB 데이터를 일반 IP 망을 통해 제공하고, 이를 IP를 기반으로 접근하도록 하는 것을 특징으로 하는 IP 기반의 DMB 데이터 변환 장치를 이용한 DMB 수신 시스템.The DMB receiving system using the IP-based DMB data conversion apparatus, characterized in that to provide the DMB data converted into the IP format and transmitted inside the DMB receiving terminal through a general IP network, and to access it based on the IP.
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