KR20050062867A - Method of synchronizing service component in dmb receiver - Google Patents

Method of synchronizing service component in dmb receiver Download PDF

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Publication number
KR20050062867A
KR20050062867A KR1020030093860A KR20030093860A KR20050062867A KR 20050062867 A KR20050062867 A KR 20050062867A KR 1020030093860 A KR1020030093860 A KR 1020030093860A KR 20030093860 A KR20030093860 A KR 20030093860A KR 20050062867 A KR20050062867 A KR 20050062867A
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South Korea
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fic
service
information
msc
audio
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KR1020030093860A
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Korean (ko)
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KR100565646B1 (en
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김윤정
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엘지전자 주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/4302Content synchronization processes, e.g. decoder synchronization
    • H04N21/4307Synchronizing display of multiple content streams, e.g. synchronisation of audio and video output or enabling or disabling interactive icons for a given period of time
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/434Disassembling 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
    • H04N21/4341Demultiplexing of audio and video streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
    • H04N21/434Disassembling 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
    • H04N21/4348Demultiplexing of additional data and video streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H2201/00Aspects of broadcast communication
    • H04H2201/10Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/11Aspects of broadcast communication characterised by the type of broadcast system digital multimedia broadcasting [DMB]

Abstract

본 발명은 DMB 수신기에 관한 것으로, 특히 DMB 수신기에서 서로 다른 성격을 갖는 서비스 컴포넌트간의 동기 방법에 관한 것이다. The present invention relates to a synchronization method between, more particularly, the service components having different characteristics in a DMB receiver according to the DMB receiver. 본 발명에 따르면, FIC 및 MSC로 구성되어 전송된 프레임을 FIC와 MSC로 분리하는 단계와, 상기 분리된 FIC 정보를 이용하여 사용자가 원하는 서비스를 선택하는 단계와, 상기 사용자로부터 선택된 서비스에 해당하는 FIC의 부가 데이터 및 MSC를 상기 FIC에 포함된 CIF 카운트 정보와 함께 디코딩함으로써 상기 CIF 카운트 정보가 삽입된 비디오, 오디오, 부가 데이터를 생성하는 단계와, 상기 삽입된 FIC의 CIF 카운트 순서대로 상기 디코딩된 비디오, 오디오, 부가 데이터를 디스플레이 하거나, 스피커로 출력하는 단계를 포함하여 이루어짐으로써 서로 다른 서비스 컴포넌트간 동기를 맞추어 재생하는 효과가 있다. According to the invention, using the steps and, the separated FIC information for separating the transmitted frame is composed of FIC and MSC to the FIC and the MSC to the user and corresponds to the step, and a service selected by the user selecting a desired service the method comprising the CIF count information is generated, the video, audio, and additional data inserted by decoding the additional data and the MSC of the FIC along with the CIF count information included in the FIC, the decoded as CIF count sequence of the inserted FIC by displaying the video, audio, additional data, or yirueojim comprising outputting to the speaker it has an effect of reproducing each other in synchronization between the different service components.

Description

DMB 수신기에서 서비스 컴포넌트 동기화 방법{Method of synchronizing service component in DMB receiver} How to Sync Services component of the DMB receiver {Method of synchronizing service component in DMB receiver}

본 발명은 DMB 수신기에 관한 것으로, 특히 DMB 수신기에서 서로 다른 성격을 갖는 서비스 컴포넌트간의 동기 방법에 관한 것이다. The present invention relates to a synchronization method between, more particularly, the service components having different characteristics in a DMB receiver according to the DMB receiver.

Eureka-147 시스템에서 정의하는 서비스는 여러 개의 서비스 컴포넌트(Service Component)를 가질 수 있다. Services defined in Eureka-147 system can have multiple service components (Service Component). 상기 서비스 컴포넌트로 올 수 있는 데이터들은 비디오와 오디오가 결합된 동영상 데이터일 수도 있고, 비디오 없이 음악만을 들려주는 오디오일 수도 있으며, 교통 정보처럼 부가 정보를 나타내는 데이터일 수도 있다. May be in the service data that can come with component video data are combined with video and audio, that audio may be heard only music without video, data may be indicative of additional information such as traffic information.

상기 비디오와 오디오가 결합된 동영상의 경우에는 비디오와 오디오의 동기(sync)를 맞추기 위한 규격이 존재하며, 이에 따라 수신기의 화면과 스피커로 데이터를 재생시켜주면 된다. For the video and the audio are combined video, and there is a standard for synchronizing (sync) of video and audio, whereby the major surface is to reproduce the data to the receiver's screen and speakers.

그러나, 동영상이 재생되면서 부가 정보를 나타내줘야 할 때나, 동영상의 비디오를 보면서 음악은 다른 서비스 컴포넌트의 음악을 들을 경우 각각의 서비스 컴포넌트간의 동기를 맞추기 위한 방법은 정해진 바가 없다. However, the time should be shown additional information as the video plays, music, watching a video if the video is the music of other service components method for synchronizing between each component of the service is not defined bars.

따라서, 본 발명의 목적은 이와 같은 종래 기술의 문제점을 해결하기 위해 안출한 것으로서, DMB 수신기에서 서로 다른 성격의 서비스 컴포넌트간의 동기를 맞추어 주기 위한 방법을 제시하는데 있다. Thus, as one made in view to solve the problems of the prior art object is such a in the invention, is to present a method for cycle in synchronization with each other between the service components of a different nature from the DMB receiver.

상기와 같은 목적을 달성하기 위한 본 발명에 따른 DMB 수신기에서 서비스 컴포넌트간 동기화 방법은, 동기 채널, FIC 및 MSC로 구성된 전송 프레임을 이용하여 전송된 다수의 서비스 컴포넌트들을 수신하기 위해, 상기 전송된 프레임을 상기 FIC와 MSC로 분리하는 단계와, 상기 분리된 FIC 정보를 이용하여 사용자가 원하는 서비스를 선택하는 단계와, 상기 사용자로부터 선택된 서비스에 해당하는 FIC의 부가 데이터 및 MSC를 상기 FIC에 포함된 CIF 카운트 정보와 함께 디코딩함으로써 상기 CIF 카운트 정보가 삽입된 비디오, 오디오, 부가 데이터를 생성하는 단계와, 상기 삽입된 FIC의 CIF 카운트 순서대로 상기 디코딩된 비디오, 오디오, 부가 데이터를 디스플레이 하거나, 스피커로 출력하는 단계를 포함하여 이루어짐을 특징으로 한다. Synchronization between the DMB receiver service components according to the present invention for achieving the above object is a synchronization channel, FIC, and for receiving the MSC number of the service components that are transmitted using a transmission frame consisting of the transmission of frames the CIF including the steps of separation into the FIC and the MSC, the method comprising: a user selects a desired service by using the separated FIC information, the additional data and the MSC of the FIC for the service selected by the user to the FIC by decoding with the count information, the CIF count information is inserted, a video, comprising the steps of: generating an audio, additional data, as the CIF count sequence of the inserted FIC display the decoded video, audio, additional data, or output to a speaker including the step of: characterized by true.

사용자가 서로 다른 하나 이상의 서비스를 선택한 경우, 상기 하나 이상의 서비스 각각이 갖고 있는 CIF 카운트 정보를 포함하여 디코딩하고, 상기 디코딩된 비디오, 오디오, 부가 데이터를 상기 CIF 카운트 순서대로 동시에 디스플레이 하거나, 스피커로 출력함으로써 서로 동기를 맞추게 됨을 특징으로 한다. When the user selects a different one or more services, the decoding comprising at least one service CIF count information, each of which has, and displays the decoded video, audio, additional data at the same time, as the CIF count sequence, or output to a speaker and by a feature that the matchuge synchronized with each other.

상기 CIF 카운트 정보는 매 전송 프레임의 FIC 내부 첫 번째 FIB에 실려있는 정보임을 특징으로 한다. The CIF count information is characterized in that the information as listed in the FIC inside the first FIB of each transmission frame.

상기 MSC는 비디오 및 오디오 데이터를 포함하여 이루어짐을 특징으로 한다. Wherein the MSC are characterized by yirueojim including video and audio data.

상기 FIC는 부가 정보 데이터, MSC 데이터의 구조를 알려주는 정보를 포함하여 이루어짐을 특징으로 한다. The FIC is characterized in yirueojim including information indicating the structure of additional information data, MSC data.

상기 MSC 디코딩 단계는, 상기 FIC가 포함하는 MSC의 데이터 구조 정보를 이용하여 디코딩되는 것을 특징으로 한다. The MSC decoding step, characterized in that the decoding by using the data structure information of the MSC comprises a FIC.

이하 발명의 바람직한 실시예에 따른 구성 및 작용을 첨부한 도면을 참조하여 설명한다. Will be described with reference to the accompanying drawings, the construction and operation of the preferred embodiment of the invention hereinafter.

도 1은 본 발명의 원리를 설명하기 위해 나타낸 DMB 전송 프레임의 구조이다. 1 is a structure of a DMB transmission frame diagrams to explain the principles of the invention.

도 1과 같이, DMB 전송 프레임은, 동기 채널(Synchronization Channel), FIC (Fast Information Channel) 및 MSC(Main Service Channel)로 구성된다. As shown in Figure 1, it consists of a DMB transmission frame includes a synchronization channel (Synchronization Channel), FIC (Fast Information Channel) and a MSC (Main Service Channel).

상기 FIC는 다시 다수개의 FIB(Fast Information Block)로 구성되고, MSC는 다수개의 CIF(Common Interleaved Frame)로 구성된다. The FIC is composed of a plurality of re-FIB (Fast Information Block), MSC is composed of a plurality of CIF (Common Interleaved Frame). 상기 FIB 및 CIF의 수는 전송 모드(Transmission mode)에 따라 달라진다. The number of the FIB and CIF is dependent on transmission mode (Transmission mode).

상기 전송 모드에 따른 FIB 및 CIF의 수를 다음의 표 1에 정리하였다. The number of the FIB and CIF according to the transmission modes are summarized in Table 1 below.

전송 모드 Transfer Mode 전송 프레임당 FIB의 수 The number of FIB per transmission frame 전송 프레임당 CIF의 수 The number of CIF per transmission frame
12 12 4 4
3 3 1 One
4 4 1 One
6 6 2 2

상기 표 1과 같이, 우리 나라에서 표준으로 채택된 전송 모드 1의 경우에는 상기 FIB가 12개, CIF가 4개로 구성되게 되는데, 이를 첨부한 도 2에 나타내었다. As shown in Table 1, in the case of the transmission mode 1, there is adopted as a standard in our country has become a configuration wherein the FIB 12, CIF is four, also accompanying it are shown in Fig.

도 2와 같이, 전송 모드 1에서의 전송 프레임은 MSC에 CIF가 4개 실리고, FIC에는 12개의 FIB가 실리며, 상기 12개의 FIB 중에서 3개의 FIB가 하나의 CIF에 대한 정보를 갖게 된다. As shown in FIG. 2, the transmission frame in the transmission mode 1 is a CIF silrigo 4 to MSC, the FIC is said twelve FIB silica, from the FIB 12 the three FIB will have information about one of the CIF.

즉, 상기 MSC 내의 CIF에는 비디오 데이터, 오디오 데이터와 같은 실제 데이터들이 들어 있고, 이러한 데이터들의 구조를 알려주는 정보가 상기 FIC내의 FIB에 들어있는 것이다. In other words, the CIF may be found in the MSC there are actual data such as video data, audio data, it will tell that the structure of this data information contained in the FIB in the FIC.

상기 FIC는 SI(Service Information), FIDC(Fast Information Data Channel), MCI(Multiplex Configuration Information), CA(Conditional Access)로 구성되는데, 상기 MCI가 MSC의 서비스 종류, 위치, 형태 등의 정보를 갖고 있어 MSC를 해석하는데 쓰이는 것이다. The FIC consists of a SI (Service Information), FIDC (Fast Information Data Channel), MCI (Multiplex Configuration Information), CA (Conditional Access), here the MCI that contains information of the MSC service type, location, type, etc. It will be used to interpret the MSC.

또한, 상기 SI는 서비스 제목, 채널 정보등을 포함하며, 상기 FIDC는 Paging, TMC(Traffic Message Channel), EWS(Emergency Warning Systems)와 같은 긴급을 요하는 데이터 서비스를 위해 쓰이고, CA는 특정 서비스를 인증된 가입자에게만 제공하기 위하여 정보열을 암호화하는데 사용된다. In addition, the SI includes a service title and channel information and the like, the FIDC is being used for data services that require an emergency such as a Paging, TMC (Traffic Message Channel), EWS (Emergency Warning Systems), CA is a particular service It is used to encrypt the information in order to provide heat to only authorized subscribers.

그리고, 매 전송 프레임의 첫 번째 FIB에 CIF 카운트(count) 정보가 실려있어, 이 값으로 각 FIB와 CIF의 해당 CIF 카운트를 계산해 낸다. And, it is listed the CIF count (count) information on the first FIB of each transmission frame, as the value calculated produce the CIF count of each FIB and CIF.

따라서, 수신기는 FIC 정보를 참고하여 CIF 단위로 데이터를 디코딩(decoding)해서 사용자에게 비디오, 오디오 서비스를 제공하는 것이다. Thus, the receiver would note that the FIC information to decode (decoding) the data to the CIF unit provides the user with video and audio services.

한편, 도 3은 상기 DMB 전송 프레임을 이용하여 실제 서비스를 제공하는 DMB 앙상블의 구조를 나타낸 도면이다. On the other hand, Figure 3 is a view showing a structure of a DMB ensemble providing the actual service using the DMB transmission frame.

도 3과 같이, 하나의 DMB 앙상블(Ensemble)은 여러 개의 서비스(알파 1 라디오, 베타 라디오, 알파 2 라디오, ‥·)로 구성되고, 각각의 서비스는 다시 여러개의 서비스 컴포넌트(service component)로 구성된다. As shown in Figure 3, consists of a DMB ensemble (Ensemble) has multiple service consists of (alpha-1 radio, beta radio, and alpha-2 radio, ‥ ·), each service is again a number of service components (service component) do.

따라서, DMB 수신기는 앙상블 단위로 튜닝할 수 있고, 선택된 앙상블의 여러 서비스 중에서 하나의 서비스만을 디코딩(decoding)하여 사용자가 보고 들을 수 있도록 한다. Thus, DMB receiver can tune to an ensemble unit, decode (decoding) only one service among various services of the selected ensemble allows the user to view.

또한, 상기 서비스 컴포넌트가 될 수 있는 것으로는 오디오 스트림(Audio stream), 교통정보와 같은 부가 정보, 그리고 비디오와 오디오가 결합된 DMB 스트림 등이 있다. Further, as can be the service components may include an audio stream (Audio stream), the additional information, and a DMB stream combined video and audio, such as traffic information. 이러한 서비스 컴포넌트 중에서 상기 교통정보와 같은 부가 정보는 FIC 내의 FIDC에 실리며, 나머지는 일반적으로 MSC에 실린다. Among these services, the additional information component, such as the traffic is carried on said FIDC in the FIC, others are generally carried on MSC.

이러한 앙상블 내의 여러 개의 서비스 중 하나를 사용자가 선택 가능하며, 선택한 서비스에 속하는 서비스 컴포넌트들 중에서도 원하는 데이터를 선택할 수 있다. And one of many services within this ensemble, the user can select, you can select the desired data among service components that belong to the selected service.

즉, 예를들어, 사용자가 "알파 1 라디오"를 선택한 경우, 상기 "알파 1 라디오" 서비스 중 오디오, 교통 정보(TMC), 서비스 제목, 채널 정보 서비스를 제공받게 되며, 상기 서비스 컴포넌트 중에서도 하나를 선택 가능하게 되는 것이다. That is, for example, will receive the user and provide when the "alpha 1 radio", the "alpha 1 radio" audio of service, traffic information (TMC), service titles, channels, information services, one among the service components choice to be made possible. 상기 정보는 도 3과 같이 예시적으로 FIC 내의 FIDC, MSC의 서브 채널 a, 그리고 MSC의 서브채널 63에 저장된다. The information is stored in the subchannel of the FIDC Illustratively, a MSC in the FIC, and the MSC sub-channel 63 as shown in FIG.

또한, 사용자가 "베타 라디오"를 선택한 경우, 상기 "베타 라디오" 서비스 중 비디오와 오디오가 합쳐진 DMB-1 또는 오디오 서비스를 제공받게 된다. Also, it receives user provides when the "beta radio", the "beta radio" service DMB-1 or an audio service, the video and audio of combined. 이때에도 사용자는 상기 서비스 중 하나를 선택하여, 해당 서비스를 즐길 수 있게 된다. At this time, even the user to select one of the services, it is possible to enjoy the service.

이러한 경우, 만일, 사용자가 상기 "알파 1 라디오"를 선택했을 때, 사용자 입자에서는 상기 교통 정보를 선택하여 보면서 오디오는 상기 교통 정보와 무관한 음악 방송을 듣기를 원할 수 있다. In this case, if, when users select the "alpha 1 radio", the user selects the traffic information by looking at particles audio may want to hear the music program independent of the traffic information.

또한, "베타 라디오"를 선택한 경우 상기 DMB-1의 비디오를 보면서 오디오는 다른 오디오를 듣기를 원할 수도 있다. In addition, when the "beta radio" watch the video of the audio DMB-1 you may want to listen to other audio.

이처럼 서로 다른 서비스 컴포넌트에 속하는 비디오와 오디오 혹은 부가 정보를 서로 동기를 맞추어 재생시키기 위해 첨부한 도 4에 본 발명에 따른 DMB 수신기의 구조를 간략히 나타내었다. Thus it was together shown a structure of a DMB receiver according to the video and audio, or additional information pertaining to the other service components in the present invention in Figure 4 attached to playback in synchronization with one another briefly.

도 4와 같이, 전송 프레임이 수신되면, 상기 전송 프레임 내 FIC와 MSC 정보를 채널 디코더(103)를 통해 분리하고, 상기 분리된 FIC 정보를 제어부(104)에서 관리하여 사용자가 선택한 서비스에 속하는 데이터들만 디코더부(105,106,107)로 보내준다. As shown in Figure 4, the transmission when the frame is received, the transfer frame within the FIC and the MSC information separated by the channel decoder 103, and to manage the separated FIC information from the control section 104 data to which the user belongs to the selected service It gives only sent to the decoder unit (105,106,107).

이때, 데이터를 전달하는 인터페이스는 메모리를 통할 수도 있고, 직접 직렬(serial)이나 병렬(parallel)로 연결될 수도 있다. At this time, an interface to transfer data may preside over the memory, may be connected directly to the series (serial) or parallel (parallel).

이때 상기 디코더부(105,106,107)부로 전달되는 데이터에 CIF 카운트 정보를 추가하여 상기 디코더부(105,106,107)에서 디코딩하도록 함으로써 각 서비스 컴포넌트간 동기를 맞춘다. The Set the synchronization between the respective service component by adding the CIF count information in the data to be delivered to the said decoder unit (105 106 107) for decoding from the decoder unit (105 106 107).

즉, 상기 디코더부(105,106,107)에서 각 데이터들을 디코딩할 때, 각 서비스 컴포넌트마다 CIF 카운트 정보를 같이 보내주면, 디코딩이 끝난 후 화면에 디스플레이 하거나 스피커를 통해 출력할 때 각 서비스 컴포넌트들간의 동기를 맞추게 되는데, 이를 첨부한 도면을 통해 좀 더 자세히 설명하면 다음과 같다. That is, when decoding each of the data from said decoder unit (105 106 107), for each service component main surface to send a CIF count information, such as, when decoding a display or outputted through the speaker on the display after the end matchuge the synchronization between the respective service components there is, will be described in more detail through the accompanying drawings, it follows.

도 5는 본 발명의 일실시예에 따른 디코딩된 데이터의 메모리 구조를 나타낸 도면이다. 5 is a view showing a memory structure of the decoded data in accordance with one embodiment of the present invention.

도 5와 같은 데이터 메모리 구조는 상기 도 2의 DMB 앙상블 구조에서 "알파 1 라디오"를 선택한 경우 디코딩 된 형태를 나타낸 구조로서, FIDC의 교통 정보, 서비스 정보, 오디오 데이터를 예로 들었다. Figure 5 is a data memory structure as shown in the decoding type structure when DMB ensemble structure of Figure 2 to select the "alpha 1 radio", I listened to traffic information, service information, for example audio data in the FIDC.

즉, FIDC에 실린 교통 정보 데이터는 5개의 CIF에 해당되는 정보가 모두 디코딩되어 메모리에 존재하고, 서비스 정보는 4개의 CIF에 해당되는 정보가 디코딩되어 메모리에 존재하며, 오디오 데이터는 디코딩 타임이 길어 2개의 CIF만 디코딩 된 상태를 나타내었다. That is, the traffic data carried on FIDC is decoded all the information corresponding to the five CIF exists in the memory, and the service information is decoded, the information corresponding to the four CIF is present in the memory, the audio data is longer decoding time CIF only two are shown decoded state.

이 경우, CIF 카운트가 100인 서비스 컴포넌트들을 제어부(104)의 제어에 따라 조합하여 화면에 디스플레이 한다던가, 스피커를 통해 출력하게 되면, 디스플레이 화면상으론 교통 정보를 보면서, 스피커를 통해서는 원하는 음악 방송을 청취하게 된다. In this case, deonga and CIF counts are combined as a 100 service components to the control of the control unit 104 displays on the screen, when the output through a speaker, display screen sangeuron while the traffic information, the music broadcasting desired by the speaker It is listening. 그 다음에 CIF 카운트가 101인 서비스 컴포넌트들을 조합하여 출력하여 줌으로써 동기를 맞추게 된다. Then the outputs by combining the service components of the CIF count 101 is motivated by giving matchuge.

도 6은 본 발명의 다른 실시예로써 디코딩된 데이터의 메모리 구조를 나타낸 도면이다. 6 is a view showing a memory structure of the decoded data, as another embodiment of the present invention.

도 6과 같은 구조는, 상기 도 2의 DMB 앙상블 구조에서 "베타 라디오"를 디코딩할 때, 디코딩 된 데이터들이 저장된 메모리 형태를 나타낸 도면으로, 비디오와 오디오가 결합된 DMB-1과 오디오 데이터를 예로 들었다. Structure as shown in Fig. 6, in a DMB ensemble structure of Figure 2 when decoding the "beta radio", with showing the decoded data are stored in the memory form the figures, the DMB-1 and audio data in which the video and audio bond Examples heard.

일반적으로 비디오 데이터와 오디오 데이터의 디코딩 타임이 다르고 오디오에 비해 비디오의 디코딩 타임이 더 오래 걸리게 된다. In general, different decoding time of the video and audio data is the decoding time of the video takes longer than the audio.

따라서, 사용자가 100번 CIF에서는 비디오와 오디오가 합쳐진 DMB-1을 선택했는데, 101번째 CIF부터 비디오는 DMB-1을 선택하고, 오디오는 다른 서비스 컴포넌트를 선택했다고 가정하면, 이 경우, CIF 카운트가 100인 DMB-1의 비디오와 오디오는 따로 규격에서 제안되는 동기 방식에 따라 재생 해주고, CIF 카운트가 101인 비디오와 두 번째 오디오 데이터는 동시에 재생해주면 된다. Thus, the user assumes the No. 100 CIF chose the DMB-1 video and audio combined, that from the 101st CIF video, select the DMB-1, and the audio will select a different service components, this is not the case, CIF count 100 the video and audio of the DMB-1 is haejugo reproduced according to the synchronization method proposed in separate specifications, the video and audio data to the second CIF count 101 is haejumyeon played at the same time.

이와 같은 방법으로, FIC에 실려오는 CIF 카운트 정보를 이용하여 각 서비스 컴포넌트간의 동기를 맞출 수 있다. In this way, it is possible to match the synchronization between the respective service component using a CIF count information coming listed in FIC.

이상의 설명에서와 같이 본 발명에 따른 DMB 수신기에서 서비스 컴포넌트 동기화 방법은 FIC의 서비스 카운트 정보를 이용함으로써 서로 다른 서비스 컴포넌트간 동기를 맞추어 재생하는 효과가 있다. Service components for synchronization the DMB receiver according to the invention as shown in the description above has the effect of play in synchronization between different services by using the service component count information of the FIC.

이상 설명한 내용을 통해 당업자라면 본 발명의 기술 사상을 일탈하지 아니하는 범위에서 다양한 변경 및 수정이 가능함을 알 수 있을 것이다. Those skilled in the art what is described above will be appreciated that various changes and modifications within the range which does not depart from the spirit of the present invention are possible.

따라서, 본 발명의 기술적 범위는 실시예에 기재된 내용으로 한정하는 것이 아니라 특허 청구 범위에 의해서 정해져야 한다. Accordingly, the technical scope of the present invention is not limited to the contents described in the examples should be defined by the claims.

도 1은 본 발명의 원리를 설명하기 위해 DMB 전송 프레임의 구조를 나타낸 도면 1 is a diagram showing the structure of a DMB transmission frame to describe the principles of the present invention;

도 2는 본 발명의 원리를 설명하기 위해 DMB 수신기의 전송 모드 1에서의 DMB 전송 프레임의 구조를 나타낸 도면 2 is a view showing the structure of a DMB transmission frame in the transmission mode of the DMB receiver to explain the principles of the invention;

도 3은 상기 DMB 전송 프레임을 이용하여 실제 서비스를 제공하는 DMB 앙상블의 구조를 나타낸 도면 Figure 3 is a diagram showing the structure of a DMB ensemble providing the actual service using the DMB transmission frame

도 4는 본 발명에 따른 DMB 수신기의 구조를 간략히 나타낸 도면 Figure 4 is a diagram showing the structure of a DMB receiver according to the invention briefly

도 5는 본 발명의 일실시예에 따른 디코딩된 데이터의 메모리 구조를 나타낸 도면 5 is a view showing a memory structure of the decoded data in accordance with one embodiment of the present invention

도 6은 본 발명의 다른 실시예에 따른 디코딩된 데이터의 메모리 구조를 나타낸 도면 6 is a view showing a memory structure of the decoded data according to another embodiment of the present invention

- 도면의 주요 부분에 대한 부호의 설명 - - of the Related Art Description

101 : 튜너 102 : OFDM 복조기 101: tuner 102: OFDM demodulator

103 : 채널 디코더 104 : 제어부 103 channel decoder 104: control unit

105 : 오디오 디코더 106 : 비디오 디코더 105: audio decoder 106: video decoder

107 : 데이터 디코더 107: data decoder

Claims (6)

  1. 동기 채널, FIC 및 MSC로 구성된 전송 프레임을 이용하여 전송된 다수의 서비스 컴포넌트들을 수신하기 위한 방법에 있어서, A method for receiving a synchronization channel, FIC and MSC number of the service components that are transmitted using a transmission frame consisting of,
    상기 전송된 프레임을 상기 FIC와 MSC로 분리하는 단계와, And separating the transmitted frame by the FIC and the MSC,
    상기 분리된 FIC 정보를 이용하여 사용자가 원하는 서비스를 선택하는 단계와, The method comprising: a user selects a desired service by using the separated FIC information,
    상기 사용자로부터 선택된 서비스에 해당하는 FIC의 부가 데이터 및 MSC를 상기 FIC에 포함된 CIF 카운트 정보와 함께 디코딩함으로써 상기 CIF 카운트 정보가 삽입된 비디오, 오디오, 부가 데이터를 생성하는 단계와, And generating an additional data FIC and the MSC by decoding with the CIF count information included in the FIC of the CIF count information is inserted into the video, audio, additional data corresponding to the service selected by the user,
    상기 삽입된 FIC의 CIF 카운트 순서대로 상기 디코딩된 비디오, 오디오, 부가 데이터를 디스플레이 하거나, 스피커로 출력하는 단계를 포함하여 이루어짐을 특징으로 하는 DMB 수신기에서 서비스 컴포넌트 동기화 방법. CIF count order, the decoded video, audio, additional data or display, comprising: a service component synchronization method in a DMB receiver, characterized by yirueojim including outputting to the speaker of the insertion FIC.
  2. 제 1 항에 있어서, 사용자가 서로 다른 하나 이상의 서비스를 선택한 경우, The method of claim 1, wherein when the user selects a different one or more services,
    상기 하나 이상의 서비스 각각이 갖고 있는 CIF 카운트 정보를 포함하여 디코딩하고, 상기 디코딩된 비디오, 오디오, 부가 데이터를 상기 CIF 카운트 순서대로 동시에 디스플레이 하거나, 스피커로 출력함으로써 서로 동기를 맞추게 됨을 특징으로 하는 DMB 수신기에서 서비스 컴포넌트 동기화 방법. DMB receiver of the decoding, and includes one or more service CIF count information, each of which has the decoded video, audio, additional data, wherein the CIF count sequence as displayed at the same time or, by outputting to the speaker that matchuge synchronization with each other characterized in how to sync in the service component.
  3. 제 1 항에 있어서, According to claim 1,
    상기 CIF 카운트 정보는 매 전송 프레임의 FIC 내부 첫 번째 FIB에 실려있는 정보임을 특징으로 하는 DMB 수신기에서 서비스 컴포넌트 동기화 방법. The CIF count information is FIC inside the first FIB carried synchronization method characterized in that the service components of the DMB receiver of information in the transmission of each frame.
  4. 제 1 항에 있어서, According to claim 1,
    상기 MSC는 비디오 및 오디오 데이터를 포함하여 이루어짐을 특징으로 하는 DMB 수신기에서 서비스 컴포넌트 동기화 방법. The MSC has a service component synchronization method in a DMB receiver, characterized by yirueojim including video and audio data.
  5. 제 1 항에 있어서, According to claim 1,
    상기 FIC는 부가 정보 데이터, MSC 데이터의 구조를 알려주는 정보를 포함하여 이루어짐을 특징으로 하는 DMB 수신기에서 서비스 컴포넌트 동기화 방법. The FIC is the additional information data, service components of the DMB receiver synchronization method characterized by the yirueojim include information indicating the structure of the MSC data.
  6. 제 1 항에 있어서, 상기 MSC 디코딩 단계는, The method of claim 1, wherein the MSC decoding step,
    상기 FIC가 포함하는 MSC의 데이터 구조 정보를 이용하여 디코딩되는 것을 특징으로 하는 DMB 수신기에서 서비스 컴포넌트 동기화 방법. The method for synchronizing service components of the DMB receiver, characterized in that the decoding by using the data structure information of the MSC comprises a FIC.
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