KR20070002816A - Method for forming service map according to channel tuning in a dmb - Google Patents

Method for forming service map according to channel tuning in a dmb Download PDF

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KR20070002816A
KR20070002816A KR1020050058494A KR20050058494A KR20070002816A KR 20070002816 A KR20070002816 A KR 20070002816A KR 1020050058494 A KR1020050058494 A KR 1020050058494A KR 20050058494 A KR20050058494 A KR 20050058494A KR 20070002816 A KR20070002816 A KR 20070002816A
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service
information
ensemble
thumbnail
epg
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KR1020050058494A
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KR100693653B1 (en
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노성철
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주식회사 대우일렉트로닉스
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    • 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
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
    • H04N21/4314—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for fitting data in a restricted space on the screen, e.g. EPG data in a rectangular grid
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
    • 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
    • H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4348—Demultiplexing of additional data and video streams
    • 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
    • H04N21/47—End-user applications
    • 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
    • H04N21/47—End-user applications
    • H04N21/482—End-user interface for program selection
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8146—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics
    • H04N21/8153—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics comprising still images, e.g. texture, background image
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Human Computer Interaction (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A method for embodying a service map when a channel is tuned in a terrestrial DMB receiver is provided to more easily search desired contents in the DMB receiver by generating each service-classified still image in a corresponding ensemble as thumbnail information, linking the thumbnail information with text information using service meta data, and providing a service map of a service-classified thumbnail type as EPG(Electronic Program Guide) information. An FIG(Fast Information Group) detects a service list in an ensemble of a channel tuned by a user(S200). An MSG generates a still image of each service in the ensemble detected from the FIG, and provides the still image to an OSD(On Screen Display) module for embodying a service map(S202). The OSD module generates text information about each service-classified broadcasting program by using service meta data received from the FIG(S204). The OSD module generates each service-classified still image data as thumbnail information, and generates a service map in which the thumbnail information is linked with the text information as EPG information(S204). When the EPG information is requested from the user, a multimedia processing unit provides the service map embodied as the service-classified text information and the thumbnail information as the EPG information through a display unit(S206).

Description

지상파 ＤＭＢ수신기에 채널 튜닝 시 서비스 맵 구현방법{METHOD FOR FORMING SERVICE MAP ACCORDING TO CHANNEL TUNING IN A DMB}How to Implement Service Map When Tuning Channels to Terrestrial DMM Receivers

도 1은 본 발명의 실시 예가 적용되는 지상파 DMB 수신기의 개략적인 블록 구성도,1 is a schematic block diagram of a terrestrial DMB receiver to which an embodiment of the present invention is applied;

도 2는 본 발명의 실시 예에 따른 지상파 DMB 수신기에서 채널 튜닝 시 서비스 맵 구현 동작 제어 흐름도.2 is a flow chart illustrating a service map implementation operation control when channel tuning in a terrestrial DMB receiver according to an embodiment of the present invention.

<도면의 주요 부호에 대한 간략한 설명><Brief description of the major symbols in the drawings>

100 : FIG 102 : OSD 모듈100: FIG 102: OSD module

104 : MSG 106 : 멀티미디어 처리부104: MSG 106: multimedia processing unit

108 : 제어부 110 : 디스플레이부108: control unit 110: display unit

112 : 키입력부112: key input unit

본 발명은 DMB 수신기에 관한 것으로, 특히 지상파 DMB 수신기에서 채널 튜 닝 시 서비스 맵 구현 방법에 관한 것이다.The present invention relates to a DMB receiver, and more particularly, to a method of implementing a service map during channel tuning in a terrestrial DMB receiver.

통상적으로 디지털 오디오 방송(Digital Audio Broadcasting: DAB)은 AM과 FM에 이은 3세대 라디오로서 콤팩트 디스크(CD) 수준의 고음질 음성은 물론, 뉴스, 교통정보, 기상정보, 위치정보를 포함하는 문자, 그래픽, 동화상 등의 멀티미디어 시대에 다양한 데이터 서비스, 우수한 이동 수신의 품질을 제공하는 차세대 라디오 방송으로, 오디오 이외에 비디오, 텍스트 등을 포함한다는 ITU의 규정에 의거하여 국내에서는 디지털 멀티미디어 방송(Digital Multimedia Broadcasting : DMB)으로 개칭하여 사용하고 있다.Digital Audio Broadcasting (DAB) is a third-generation radio following AM and FM. It is text and graphics that contain news, traffic, weather, and location information, as well as compact disc (CD) high quality voice. Next-generation radio broadcasting that provides various data services and excellent mobile reception quality in the age of multimedia such as video and moving images. Digital Multimedia Broadcasting (DMB) It is renamed to) and used.

이러한 DMB는 완전히 디지털화된 정보를 사용자에게 제공할 뿐만 아니라, 주파수를 질과 양적인 면에서 다양하게 응용할 수 있는 고도화된 시스템이며, 또한 DMB는 음성 프로그램과 데이터 프로그램을 동시에 서로 다른 데이터율로 전송할 수 있고, 데이터 서비스를 음성 프로그램에 포함하여 제공하는 PAD(Program Associated Data) 서비스와, 음성 프로그램과 관계없이 독립적으로 문자, 그래픽, 영상으로 프로그램을 제공하는 NPAD(Non Program Associated Data) 서비스가 가능하다.In addition to providing users with fully digitalized information, DMB is an advanced system that can be used for various applications in terms of quality and quantity. In addition, DMB can transmit voice programs and data programs at different data rates simultaneously. In addition, a PAD (Program Associated Data) service that includes a data service in a voice program and a Non Program Associated Data (NPAD) service that provides a program independently in a text, graphic, and video mode regardless of a voice program are possible.

또한 DMB는 다기능의 데이터 방송이 가능하다는 측면에서 기존 방송과 다른 특징을 지니고 있다. 기존의 방송이 음성과 영상 중심의 서비스인데 비하여 DMB는 이와 함께 데이터 서비스가 가능하다는 특징을 지닌다. 데이터 서비스는 기존의 영상과 음성 중심의 방송 서비스를 보완하는 역할을 하는데, 데이터 서비스가 통신서비스라는 특성을 고려할 때, DMB는 쌍방향적인 기능과 함께 일정부분 통신의 속성 을 지녔다고 할 수 있다.In addition, DMB has different characteristics from the existing broadcasting in that multi-function data broadcasting is possible. While traditional broadcasting is a service centered on voice and video, DMB has a feature that data service is possible with it. The data service complements the existing video and audio oriented broadcasting service. In consideration of the characteristics of the data service as a communication service, the DMB has an interactive function and some attributes of communication.

한편, 위와 같은 DMB 에서도 채널의 수가 증가함에 따라 종래 디지털 TV에서와 같이 사용자가 원하는 방송 프로그램을 쉽게 검색할 수 있도록 하는 EPG 기능의 구현이 필요하다.Meanwhile, even in the above DMB, as the number of channels increases, there is a need to implement an EPG function that allows a user to easily search for a desired broadcast program as in a conventional digital TV.

그러나 DMB는 앙상블-서비스 구조되어 있어 사용자가 컨텐츠를 접하기 위해서는 실질적으로 두 번의 튜닝 과정이 필요하며, 현재 지상파 DMB의 경우 6개 앙상블내 38개의 서비스가 구현되어 있고, 추후에도 방송국의 증가에 따라 앙상블과 앙상블내 서비스의 수가 기하급수적으로 증가할 것으로 예상되어 종래 디지털 TV에서의 EPG 기능으로는 앙상블-서비스 구조로 되어 있는 DMB의 프로그램 정보를 보다 효과적으로 표시할 수 없는 문제점이 있었다.However, because DMB has an ensemble-service structure, two tuning processes are required for users to access contents. Currently, terrestrial DMB has 38 services in six ensembles. As the number of ensemble and services in the ensemble is expected to increase exponentially, there is a problem in that the EPG function of the conventional digital TV cannot effectively display program information of the DMB having an ensemble-service structure.

따라서, 본 발명의 목적은 지상파 DMB 수신기에서 채널 튜닝 시 서비스 맵 구현 방법을 제공함에 있다.Accordingly, an object of the present invention is to provide a service map implementation method for channel tuning in a terrestrial DMB receiver.

상술한 목적을 달성하기 위한 본 발명은 지상파 DMB수신기에 채널 튜닝 시 서비스 맵 구현방법으로서, (a)FIG를 통해 사용자에 의해 선국된 채널의 앙상블내 서비스 목록을 검출하는 단계와, (b)상기 FIG로부터 검출된 앙상블내 각 서비스의 정지화상을 생성시켜 이를 서비스 맵 구현을 위한 OSD 모듈로 인가시키는 단계와, (c)상기 FIG로부터 수신되는 서비스 메타데이터를 이용하여 각 서비스별 방송 프로그램에 대한 텍스트 정보를 생성하는 단계와, (d)상기 각 서비스별 정지화상 데이터를 썸네일 정보로 생성하여 상기 텍스트 정보와 썸네일 정보를 연계한 서비스 맵 을 EPG 정보로 생성시키는 단계와, (e)사용자로부터의 EPG 정보 요구 시 앙상블내 서비스별 텍스트 정보와 썸네일 정보로 구현한 서비스 맵을 디스플레이부를 통해 EPG 정보로 제공하는 단계를 포함하는 것을 특징으로 한다.According to an aspect of the present invention, there is provided a service map implementation method for channel tuning in a terrestrial DMB receiver, the method comprising: (a) detecting a service list in an ensemble of channels tuned by a user through a fig; Generating a still picture of each service in the ensemble detected from FIG and applying the same to an OSD module for implementing a service map; and (c) text for a broadcast program for each service using service metadata received from FIG. Generating information, (d) generating still image data of each service as thumbnail information, and generating a service map linking the text information and thumbnail information as EPG information; and (e) EPG information from a user. Providing a service map implemented as text information and thumbnail information for each service in the ensemble as EPG information through the display unit upon request. It is characterized by including.

이하, 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시 예의 동작을 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

도 1은 본 발명의 실시 예가 적용되는 DMB 수신기의 개략적인 블록 구성을 도시한 것이다. 1 is a schematic block diagram of a DMB receiver to which an embodiment of the present invention is applied.

상기 도 1을 참조하면, FIG(Fast Information Group)(100)는 사용자에 의해 선택된 채널의 방송 신호를 선국하는 튜너(Tuner) 역할을 수행하며, 선국된 채널의 앙상블(Ensemble)내 서비스(service) 목록을 검출하여 MSG(104)로 인가시킨다.Referring to FIG. 1, the FIG (Fast Information Group) 100 serves as a tuner for tuning a broadcast signal of a channel selected by a user, and a service in an ensemble of the tuned channel. The list is detected and applied to the MSG 104.

MSG(104)는 베이스 밴드 처리부로 상기 FIG(100)로부터 수신되는 방송신호를 디지털 형태로 변환하고, 복조한 후, 상기 복조된 신호를 오디오 신호와 멀티미디어 신호로 분리하여 오디오 신호는 복호처리하여 바로 출력시키고, 멀티미디어 신호를 멀티미디어 처리부(106)로 인가시킨다. 또한 본 발명에 따른 DMB에서의 EPG 기능 구현을 위해 FIG(100)로부터 인가되는 앙상블내 각 서비스의 정지화상 이미지를 획득하여 이를 OSD 모듈(102)로 인가시킨다.The MSG 104 converts the broadcast signal received from the FIG 100 into a digital form by a baseband processor, and demodulates the signal. The MSG 104 separates the demodulated signal into an audio signal and a multimedia signal, and decodes the audio signal. The multimedia signal is applied to the multimedia processing unit 106. In addition, to implement the EPG function in the DMB according to the present invention, a still picture image of each service in the ensemble applied from FIG 100 is obtained and applied to the OSD module 102.

OSD 모듈(102)은 FIG(100)로부터 인가되는 서비스 메타데이터(service meta data)와 MSG(104)로부터 인가되는 각 서비스의 정지화상(still image)을 각 서비스별 텍스트 정보와 썸네일(thumbnail) 정보로 구성하여 멀티미디어 처리부(106)로 제공한다.The OSD module 102 may display service metadata applied from the FIG 100 and still images of each service applied from the MSG 104, including text information and thumbnail information for each service. It is configured to provide to the multimedia processing unit 106.

멀티미디어 처리부(106)는 멀티미디어 데이터에 대해 디코딩을 수행하는 MPEG 디코더와, 각종 데이터 정보를 디코딩하는 데이터 디코더를 구비하여 MSG(104)로부터 인가되는 멀티미디어 신호에 대하여 디코딩을 수행하며, 본 발명에 따른 DMB에서의 EPG(Electronic Program Guide) 구현을 위해 OSD 모듈(102)로부터 인가되는 앙상블내 각 서비스별 썸네일 정보와 텍스트 정보로 구성되는 서비스 맵(service map)을 생성하여 사용자의 요청 시 DMB의 EPG 정보로 디스플레이부(110)를 통해 제공한다.The multimedia processing unit 106 includes an MPEG decoder for decoding multimedia data and a data decoder for decoding various data information to decode the multimedia signal applied from the MSG 104, and according to the present invention, the DMB according to the present invention. In order to implement the Electronic Program Guide (EPG), the service map is composed of thumbnail information and text information of each service in the ensemble applied from the OSD module 102, and is converted into the EPG information of the DMB upon user's request. It is provided through the display 110.

제어부(108)는 키입력부(112)를 통한 사용자의 키 입력에 따라 DMB수신기 각 구성부의 동작을 제어하며, 본 발명에 따라 사용자로부터 EPG 정보 요구가 있는 경우 상기 멀티미디어 처리부(106)를 제어하여 OSD 모듈(102)로부터 인가되는 앙상블내 서비스별 방송 프로그램에 대한 텍스트 정보와 이와 연계되는 썸네일 정보로 구성되는 서비스 맵이 디스플레이부(110)를 통해 표시되어 사용자에게 제공되도록 한다.The controller 108 controls the operation of each component of the DMB receiver according to the user's key input through the key input unit 112, and controls the multimedia processing unit 106 when there is an EPG information request from the user according to the present invention. A service map composed of text information about a broadcast program for each service in an ensemble applied from the module 102 and thumbnail information associated therewith is displayed on the display 110 to be provided to the user.

도 2는 본 발명의 실시 예에 따른 DMB 수신기에서 채널 튜닝 시 서비스 맵 구현 동작 제어 흐름을 도시한 것이다. 이하 상기 도 1 및 도 2를 참조하여 본 발명의 실시 예를 상세히 설명하기로 한다.2 is a flowchart illustrating a service map implementation operation control flow when channel tuning in a DMB receiver according to an embodiment of the present invention. Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

먼저 FIG(100)는 (S200)단계에서 사용자에 의해 선국된 채널의 앙상블내 서비스 목록을 검출하여 MSG(104)로 제공한다. 그러면 MSG(104)는 (S202)단계에서 상기 FIG(100)로부터 검출된 각 서비스의 정지화상을 생성시켜 이를 서비스 맵 구현 을 위한 OSD 모듈(102)로 인가시킨다.First, FIG 100 detects a list of services in an ensemble of channels tuned by a user in step S200 and provides them to the MSG 104. Then, the MSG 104 generates a still picture of each service detected from the FIG 100 in step S202 and applies it to the OSD module 102 for implementing the service map.

이에 따라 OSG 모듈(102)에서는 상기 FIG(100)로부터 서비스 메타데이터(service meta data)를 수신하고, MSG(104)로부터는 각 서비스의 정지화상 데이터를 제공받아 이를 DMB 수신기에서의 EPG 구현을 위한 서비스 맵을 생성시키게 되는데, 즉, OSG 모듈(102)은 (S204)단계에서 서비스 메타 데이터를 이용하여 각 서비스별 방송 프로그램에 대한 텍스트(text) 정보를 생성하고, MSG(104)로부터 제공되는 각 서비스별 정지화상 데이터를 썸네일(thumbnail) 정보로 생성하여 상기 텍스트 정보와 썸네일 정보를 연계한 서비스 맵을 EPG 정보로 멀티미디어 처리부(106)로 제공하게 된다.Accordingly, the OSG module 102 receives service meta data from the FIG 100 and receives still picture data of each service from the MS 100, which is used to implement EPG in the DMB receiver. The service map is generated, that is, the OSG module 102 generates text information on the broadcast program for each service by using the service metadata in operation S204, and provides each of the services provided from the MSG 104. The still image data for each service is generated as thumbnail information to provide a service map in which the text information and the thumbnail information are linked to the multimedia processing unit 106 as EPG information.

그러면 멀티미디어 처리부(106)는 (S206)단계에서 제어부(108)로부터 사용자의 요구에 따른 EPG 정보 표시 요구가 있는 경우 상기 OSD 모듈(102)로부터 제공되는 앙상블내 서비스별 방송 프로그램에 대한 텍스트 정보와 이와 연계되는 썸네일 정보로 구성되는 서비스 맵을 디스플레이부(110)를 통해 EPG 정보로 사용자에게 제공하게 되는 것이다.Then, if there is a request for displaying EPG information according to the user's request from the controller 108 in step S206, the multimedia processing unit 106 includes text information on the broadcast program for each service in the ensemble provided from the OSD module 102 and the like. The service map composed of the associated thumbnail information is provided to the user as EPG information through the display 110.

이에 따라 사용자는 DMB 수신기에서 앙상블내 각 서비스에 대한 썸네일 정보와 텍스트 정보로 구성되는 서비스 맵을 EPG 정보로 확인 가능하여 원하는 컨텐츠를 보다 쉽게 검색할 수 있게 된다.Accordingly, the user can check the service map composed of thumbnail information and text information of each service in the ensemble as EPG information in the DMB receiver, so that the user can easily search for desired contents.

한편 상술한 본 발명의 설명에서는 구체적인 실시 예에 관해 설명하였으나, 여러 가지 변형이 본 발명의 범위에서 벗어나지 않고 실시될 수 있다. 따라서 발명의 범위는 설명된 실시 예에 의하여 정할 것이 아니고 특허청구범위에 의해 정하여 져야 한다.Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be defined by the claims rather than by the described embodiments.

이상에서 설명한 바와 같이, 본 발명은 DMB 수신기에서의 EPG 구현에 있어서, 채널 선택된 해당 앙상블내 각 서비스별 정지화상을 썸네일 정보 생성하고, 이를 서비스 메타데이터를 이용한 텍스트 정보와 연계하여 서비스별 썸네일 형식의 서비스 맵을 EPG 정보 제공함으로써, DMB 수신기에서 원하는 컨텐츠를 보다 용이하게 검색할 수 있도록 하는 이점이 있다.As described above, in the EPG implementation in the DMB receiver, thumbnail information of each service in a channel-selected ensemble is generated, and thumbnail information of each service is associated with text information using service metadata. By providing the service map with EPG information, there is an advantage that the desired content can be more easily retrieved from the DMB receiver.

Claims (1)

지상파 DMB수신기에 채널 튜닝 시 서비스 맵 구현방법으로서,As a service map implementation method for channel tuning in terrestrial DMB receiver, (a)FIG를 통해 사용자에 의해 선국된 채널의 앙상블내 서비스 목록을 검출하는 단계와,(a) detecting a list of services in an ensemble of channels tuned by the user through the FIG, (b)상기 FIG로부터 검출된 앙상블내 각 서비스의 정지화상을 생성시켜 이를 서비스 맵 구현을 위한 OSD 모듈로 인가시키는 단계와,(b) generating a still picture of each service in the ensemble detected from the FIG and applying the same to an OSD module for implementing a service map; (c)상기 FIG로부터 수신되는 서비스 메타데이터를 이용하여 각 서비스별 방송 프로그램에 대한 텍스트 정보를 생성하는 단계와,(c) generating text information on the broadcast program for each service using the service metadata received from the FIG. (d)상기 각 서비스별 정지화상 데이터를 썸네일 정보로 생성하여 상기 텍스트 정보와 썸네일 정보를 연계한 서비스 맵을 EPG 정보로 생성시키는 단계와,(d) generating still image data of each service as thumbnail information to generate a service map in which the text information and the thumbnail information are linked as EPG information; (e)사용자로부터의 EPG 정보 요구 시 앙상블내 서비스별 텍스트 정보와 썸네일 정보로 구현한 서비스 맵을 디스플레이부를 통해 EPG 정보로 제공하는 단계(e) providing the service map implemented as text information and thumbnail information for each service in the ensemble as the EPG information when the user requests EPG information from the ensemble; 를 포함하는 지상파 DMB수신기에 채널 튜닝 시 서비스 맵 구현방법.A method of implementing a service map when channel tuning to a terrestrial DMB receiver including a.
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