KR100354535B1 - Broadcast receiver that displays the presence or absence of subtitle information transmission on the screen - Google Patents

Broadcast receiver that displays the presence or absence of subtitle information transmission on the screen Download PDF

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KR100354535B1
KR100354535B1 KR1019980062111A KR19980062111A KR100354535B1 KR 100354535 B1 KR100354535 B1 KR 100354535B1 KR 1019980062111 A KR1019980062111 A KR 1019980062111A KR 19980062111 A KR19980062111 A KR 19980062111A KR 100354535 B1 KR100354535 B1 KR 100354535B1
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subtitle information
broadcast
information
screen
digital broadcast
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KR1019980062111A
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KR20000045551A (en
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임화섭
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삼성전자 주식회사
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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
    • H04N21/47—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
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4884—Data services, e.g. news ticker for displaying subtitles

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

디지털방송에 서브타이틀정보의 포함여부를 방송수상기의 화면외부에 나타내는, 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기는, TS스트림형태로 전송되는 디지털방송신호를 검사하여 서브타이틀정보가 디지털방송신호에 포함되어 있는 지를 파악하고, 방송수신기의 화면 외부에 이러한 포함여부를 표시하기 위한 표시수단으로서의 LED를 구비하고 있다. 따라서, 본 발명은 시청자로 하여금 디지털방송 시청과 동시에 서브타이틀정보의 전송유무를 정확히 확인할 수 있는 효과가 있다.The broadcast receiver which displays whether or not the subtitle information is included on the outside of the broadcast receiver, indicating whether or not the subtitle information is included in the digital broadcast, checks the digital broadcast signal transmitted in the TS stream form, and displays the subtitle information. It is provided with LEDs as display means for determining whether the digital broadcast signal is included and for indicating the inclusion on the outside of the screen of the broadcast receiver. Therefore, the present invention has the effect that the viewer can accurately check whether or not the transmission of the subtitle information at the same time watching the digital broadcast.

Description

서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기Broadcast receiver that displays the presence or absence of subtitle information transmission on the screen

본 발명은 디지털방송을 수신하는 방송수신장치에 관한 것으로, 보다 상세하게는, 서브타이틀정보가 디지털방송신호에 포함되어 있는 지를 검출하여 이러한 포함유무를 방송수상기의 화면외부에 표시할 수 있는, 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기에 관한 것이다.The present invention relates to a broadcast receiving apparatus for receiving digital broadcast, and more particularly, to detect whether subtitle information is included in a digital broadcast signal and to display the presence or absence of such inclusion on the screen of the broadcast receiver. The present invention relates to a broadcast receiver which displays the presence or absence of title information transmission outside the screen.

멀티미디어와 하이퍼미디어 통신을 위해 방대한 데이터의 압축 및 전송과 관련된 MPEG(Moving Picture Exports Group)표준들 중, MPEG-2는 차세대 지상파방송, 위성방송 등에 적용되는 국제표준이다. 이러한 MPEG-2에서는 동영상, 음향 그리고 기타 부가정보에 대한 각종 신호들을 비트스트림(bit stream) 형태로 패킷(packet)화하도록 규정하고 있는데, 이와 같이 패킷화된 스트림의 종류로는 프로그램스트림(Program Stream, 이하 'PS스트림'이라 함)과 트랜스포트스트림(Transport Stream, 이하 'TS스트림'이라 함)이 있다. 이중 디지털방송에서는 방송신호 전송시 발생될 수 있는 신호오류 등의 문제점들에 효율적으로 대응하기 위해, TS스트림 형태에 의한 신호전송이 이루어지고 있다. 디지털방송시 송신되는 TS스트림에는 디지털방송을 위한 기본적인 방송정보외에 추가적인 부가정보가 실려서 송출되며, 이러한 부가정보로는 서브타이틀(sub title)정보 등이 있다.Among the MPEG (Moving Picture Exports Group) standards related to the compression and transmission of vast amounts of data for multimedia and hypermedia communications, MPEG-2 is the international standard for next-generation terrestrial and satellite broadcasting. In MPEG-2, various signals for moving pictures, sound, and other additional information are specified to be packetized in the form of a bit stream. , Hereinafter referred to as a 'PS stream' and a transport stream (hereinafter referred to as a 'TS stream'). In the digital broadcasting, in order to efficiently cope with problems such as a signal error that may occur when transmitting a broadcast signal, a signal transmission in the form of a TS stream is performed. The TS stream transmitted during digital broadcasting carries additional additional information in addition to the basic broadcasting information for digital broadcasting, and such additional information includes subtitle information.

서브타이틀정보는 디지털방송에 부가적인 내용을 담고 있는 정보로서, 디지털 방송신호에 항상 포함되어 있는 것이 아니라 필요에 따라 포함시키는 정보이며, 긴급성을 요하는 내용이 많기 때문에 사용자(user)가 서브타이틀정보를 확인하여 이용할 경우 많은 이점이 있다.Subtitle information is additional information that is included in digital broadcasting. It is not always included in the digital broadcasting signal, but is included as needed. There are a number of benefits to identifying and using information.

하지만, 종래에는 서브타이틀정보를 중요시 하지 않아 디지털방송신호에 포함시키지 않는 경우가 많았다. 또한 수신측에서 디지털방송신호에 포함되어 전송되는 서브타이틀정보를 검출한 경우에도 서브타이틀정보의 전송유무를 주된 방송신호와 함께 디스플레이하므로써, 서브타이틀정보의 전송유무가 방송화면에 가리어 사용자가 확인하지 못하는 문제점이 있었다.However, in the past, subtitle information was not important and was often not included in the digital broadcast signal. In addition, even when the receiving side detects subtitle information included in the digital broadcasting signal and is transmitted, the presence or absence of the subtitle information is displayed on the broadcast screen by displaying whether or not the subtitle information is transmitted together with the main broadcast signal. There was a problem.

따라서, 본 발명은 전술한 문제점을 해결할 수 있도록 전송되는 디지털방송신호의 특정 섹션을 검사하여 서브타이틀정보의 전송유무를 검출하고, 서브타이틀정보의 전송이 있을 경우 이를 방송수상기의 화면외부적으로 표시할 수 있는, 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기를 제공함에 있다.Accordingly, the present invention detects the presence or absence of subtitle information transmission by inspecting a specific section of the digital broadcast signal transmitted to solve the above-described problem, and if there is transmission of the subtitle information, displays it externally on the screen of the broadcast receiver. The present invention provides a broadcast receiver which displays the presence or absence of transmission of subtitle information.

도 1은 본 발명의 일실시예에 따른 서브타이틀정보의 전송유무를 표시하는 방송수상기의 블록도.1 is a block diagram of a broadcast receiver indicating the presence or absence of transmission of subtitle information according to an embodiment of the present invention.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

10 : 튜너부 12 : OFDM복조부10 tuner portion 12 OFDM demodulation portion

14 : FEC부 16 : 역다중화기14: FEC part 16: demultiplexer

18 : 제어부 20 : LED18: control unit 20: LED

이와 같은 목적을 달성하기 위한 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기는, 디지털방송신호를 튜닝하기 위한 튜너부; 상기 튜닝된 디지털방송신호를 구문분석(parsing)하여 디지털방송정보를 추출해 내는 정보추출부; 상기 추출된 디지탈방송정보로부터 상기 디지털방송신호에 서브타이틀(sub title)정보의 포함여부를 검출하고, 상기 검출여부를 표시하기 위한 제어신호를 출력하는 제어부; 및, 상기 방송수신장치의 화면외부에 위치하여 상기 제어부로부터 입력받은 제어신호에 따라 점등되는 표시수단을 포함하고 있다.The broadcast receiver which displays the presence or absence of transmission of subtitle information for achieving the above object includes: a tuner unit for tuning a digital broadcast signal; An information extraction unit for parsing the tuned digital broadcast signal to extract digital broadcast information; A control unit which detects whether subtitle information is included in the digital broadcasting signal from the extracted digital broadcasting information and outputs a control signal for indicating whether the subtitle information is included; And display means positioned on the outside of the screen of the broadcast receiving apparatus and turned on according to a control signal received from the controller.

이하, 첨부한 도면들을 참조하여 본 발명의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 일실시예에 따른 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기의 블록구성도이다.1 is a block diagram of a broadcast receiver for displaying the presence or absence of transmission of subtitle information according to an embodiment of the present invention.

도시한 바와 같이, 안테나(ANT)를 통해 디지털방송전파를 수신하는 튜너부(10)는 튜닝된 디지탈방송신호를 OFDM(Orthogonal Frequency Division Multiplexing)복조부(12)로 출력한다. OFDM복조부(12)는 튜닝된 디지털방송신호를 복조하여 디지털방송신호로부터 TS스트림을 추출해 낸다. FEC(Forward Error Correction)부(14)는 추출된 TS스트림에 대해 에러정정을 수행하며, 이 과정에서 디지털방송신호의 송신시 포함될 수 있는 에러가 제거된다. 역다중화기(16)는 에러정정된 TS스트림을 구문분석(parsing)하여 TS스트림에 포함된 디지털방송의 비디오·오디오 및 데이터스트림을 분리해 낸다. 또한 역다중화기(16)는, TS스트림의 프로그램 특성을 나타내는 프로그램사양정보(Program Specific Information)테이블을 검색하여 서브타이틀정보가 TS스트림내에 포함되어 있는 지를 알아낸다. TS스트림의 PSI테이블 검색결과 서브타이틀정보가 포함되어 있으면 역다중화기(16)는 후단의 제어부(18)에 이를 알린다. 제어부(18)는 역다중화기로부터 입력받은 확인결과에 따라 후단의 LED(20)를 온(ON)시키므로써, 전송되고 있는 디지털방송신호에 서브타이틀정보가 포함되어 있음을 시청자에게 알려주게 된다.As shown in the drawing, the tuner unit 10 receiving the digital broadcast wave through the antenna ANT outputs the tuned digital broadcast signal to the orthogonal frequency division multiplexing (OFDM) demodulator 12. The OFDM demodulator 12 demodulates the tuned digital broadcast signal and extracts a TS stream from the digital broadcast signal. The Forward Error Correction (FEC) unit 14 performs error correction on the extracted TS stream, and in this process, errors that may be included in the transmission of the digital broadcast signal are eliminated. The demultiplexer 16 parses the error-corrected TS stream and separates the video, audio and data streams of the digital broadcast contained in the TS stream. In addition, the demultiplexer 16 searches the Program Specific Information table indicating the program characteristics of the TS stream to find out whether the subtitle information is included in the TS stream. If the PSI table search result subtitle information of the TS stream is included, the demultiplexer 16 notifies the control unit 18 at a later stage. The controller 18 turns on the LED 20 of the rear stage according to the confirmation result received from the demultiplexer, thereby informing the viewer that the subtitle information is included in the digital broadcasting signal being transmitted.

도 1에 도시하지는 않았지만 대부분의 TV수상기에서 역다중화기(16)의 후단에는 디지털방송을 디스플레이하기 위해 신호처리를 수행하는 각 구성부들이 연결되며, 이 구성부들에서 신호처리된 방송영상은 TV수상기의 화면에 디스플레이된다. 따라서 본 발명은 TV수상기의 화면에 방송영상이 디스플레이되더라도 종래와 같이 서브타이틀정보의 전송유무에 대한 표시가 가리는 문제점이 없으며, 시청자는 LED의 점등상태를 확인한 후 필요한 조작을 수행하여 서브타이틀정보를 시청할 수 있다.Although not shown in FIG. 1, in most TV receivers, the rear end of the demultiplexer 16 is connected to each component which performs signal processing for displaying digital broadcast, and the broadcast image signal processed in these components is connected to the TV receiver. Is displayed on the screen. Therefore, in the present invention, even if the broadcast image is displayed on the screen of the TV receiver, there is no problem in that the indication of the transmission of the subtitle information is not hidden as in the prior art. You can watch.

상술한 바와 같이, 본 발명은 디지털방송의 TS스트림에 서브타이틀정보가 전송되고 있음을 체크하여 방송수상기의 화면외부적으로 표시해 주므로써, 디지털방송을 시청하면서 서브타이틀정보의 전송유무를 확인할 수 있는 효과를 제공한다.As described above, the present invention checks that the subtitle information is being transmitted to the TS stream of the digital broadcast and displays it externally on the screen of the broadcast receiver, so that the presence or absence of the subtitle information can be checked while watching the digital broadcast. Provide effect.

Claims (2)

디지털방송을 수신하기 위한 방송수신장치에 있어서,In the broadcast receiving device for receiving digital broadcasting, 디지털방송신호를 튜닝하기 위한 튜너부;A tuner unit for tuning a digital broadcast signal; 상기 튜닝된 디지털방송신호를 구문분석(parsing)하여 디지털방송정보를 추출해 내는 정보추출부;An information extraction unit for parsing the tuned digital broadcast signal to extract digital broadcast information; 상기 추출된 디지탈방송정보로부터 상기 디지털방송신호에 서브타이틀(sub title)정보의 포함여부를 검출하고, 상기 검출여부를 표시하기 위한 제어신호를 출력하는 제어부; 및A control unit which detects whether subtitle information is included in the digital broadcasting signal from the extracted digital broadcasting information and outputs a control signal for indicating whether the subtitle information is included; And 상기 방송수신장치의 화면외부에 위치하여 상기 제어부로부터 입력받은 제어신호에 따라 점등되는 표시수단을 포함하는 것을 특징으로 하는, 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기.And a display unit positioned outside the screen of the broadcast receiving apparatus and turned on according to a control signal received from the control unit. 상기 제 1항에 있어서, 상기 표시수단은 LED인 것을 특징으로 하는, 서브타이틀정보의 전송유무를 화면외부에 표시하는 방송수상기.The broadcast receiver according to claim 1, wherein the display means is an LED.
KR1019980062111A 1998-12-30 1998-12-30 Broadcast receiver that displays the presence or absence of subtitle information transmission on the screen KR100354535B1 (en)

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KR100442272B1 (en) * 2002-01-18 2004-07-30 엘지전자 주식회사 Method and apparatus for outputting analog of Digital Subtitle

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KR19980029489U (en) * 1996-11-27 1998-08-17 배순훈 External video input display device of image processing device

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