KR20000074839A - Apparatus and method for processing caption of digital tv receiver - Google Patents

Apparatus and method for processing caption of digital tv receiver Download PDF

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KR20000074839A
KR20000074839A KR1019990019054A KR19990019054A KR20000074839A KR 20000074839 A KR20000074839 A KR 20000074839A KR 1019990019054 A KR1019990019054 A KR 1019990019054A KR 19990019054 A KR19990019054 A KR 19990019054A KR 20000074839 A KR20000074839 A KR 20000074839A
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caption
digital
analog
information
decoder
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KR1019990019054A
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Korean (ko)
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KR100294677B1 (en
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김익환
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구자홍
엘지전자 주식회사
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00Winding, coiling, or depositing filamentary material
    • B65H54/02Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40Arrangements for rotating packages
    • B65H54/44Arrangements for rotating packages in which the package, core, or former is engaged with, or secured to, a driven member rotatable about the axis of the package
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00Power transmission; Driving means
    • B65H2403/20Belt drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments

Abstract

PURPOSE: An apparatus and method of processing caption information of a receiver of a digital TV are provided to convert an analog caption through a cord converting operation into a digital caption, thereby providing various caption display modes. CONSTITUTION: The apparatus for processing caption information of a receiver of a digital TV comprises a caption decoder(25) for decoding analog/digital caption information included in a transport stream to construct a corresponding OSD, a caption converting portion(30) for converting an analog caption decoded in the caption decoder into a digital caption and then feeding back to the caption decoder, and a controller(29) for controlling the caption converting portion to convert the analog caption output from the caption decoder into the digital caption through a code converter according as an analog caption mode is selected by a user. A method of processing caption information of a receiver of a digital TV comprises the steps of: extracting the caption information of the present selected channel if a caption mode is selected by the user and determining whether the caption mode is the analog caption or the digital caption; decoding the caption information if the caption mode is the digital caption, and constructing and displaying a corresponding OSD; and converting the analog caption into the digital caption if the caption mode is the analog caption, and decoding the converted digital caption, and then constructing and displaying a corresponding OSD.

Description

디지털 티브이 수신기의 캡션정보 처리장치 및 방법{APPARATUS AND METHOD FOR PROCESSING CAPTION OF DIGITAL TV RECEIVER}Caption information processing apparatus and method of digital TV receiver {APPARATUS AND METHOD FOR PROCESSING CAPTION OF DIGITAL TV RECEIVER}

본 발명은 디지털 티브이 수신기에 관한 것으로서, 특히 디지털 티브이 수신기의 캡션정보 처리장치 및 방법에 관한 것이다.The present invention relates to a digital TV receiver, and more particularly, to an apparatus and method for processing caption information of a digital TV receiver.

현재 일상생활에서 뉴스, 정보 및 오락 등의 제공원으로서 티브이의 역할은 증가하고 있으나, 청각 장애자들은 대부분의 티브이 프로그램을 제대로 이용하지 못하는 실정이다.Currently, TV's role as a provider of news, information and entertainment in daily life is increasing, but the hearing impaired are unable to use most TV programs properly.

따라서 이를 해결할 목적으로 개발된 것이 캡션기능으로서, 캡션기능이 구비된 디지털 티브이 수신기는 방송국으로부터 전송된 트랜스포트 스트림(Transport stream)중 부가정보에 포함된 캡션정보를 사용자의 선택에 따라 역다중화 및 디코딩 등 일련의 신호처리를 거쳐 OSD 형태의 영상 및 그와 동기된 음성으로 출력하는 장치이다.Therefore, the caption function was developed to solve this problem, and the digital TV receiver with the caption function demultiplexes and decodes the caption information included in the additional information of the transport stream transmitted from the broadcasting station according to the user's selection. It is a device that outputs video of OSD type and sound synchronized with it through a series of signal processing.

이때 트랜스포트 스트림은 188 byte의 패킷으로 구성되어 있으며, 각 패킷은 패킷 아이디(Packet ID: PID)로 구별된다.In this case, the transport stream is composed of 188 byte packets, and each packet is identified by a packet ID (PID).

미국의 경우 1993년 7월 1일 이후 미국내 생산되거나 수입되는 13인치 이상의 모든 티브이에는 의무적으로 캡션정보를 추출하고 분석하여 디스플레이하기 위한 화면구성정보를 생성하는 클로즈드 캡션(Closed Caption) 디코더를 장착하도록 하는 법률을 제정했다.In the United States, all TVs 13 inches or larger that are produced or imported in the United States after July 1, 1993 must be equipped with a closed caption decoder that generates screen composition information for extracting, analyzing, and displaying caption information. To enact a law.

그 캡션 국제규격을 살펴보면, 아날로그 티브이 규격인 NTSC에 제정된 캡션규격으로 EIA-608이 있고 디지털 티브이 규격인 ATSC에 제정된 캡션규격으로 EIA-708이 있다.The caption international standard is EIA-608 as the caption standard established in NTSC, the analog TV standard, and EIA-708 as the caption standard established in the ATSC, the digital TV standard.

이때 디지털 티브이 규격인 EIA-708은 서비스되는 캡션의 수가 16개 즉, 16개 언어가 가능하여 아날로그에 비해 약 2배이며, 초당 전송되는 캡션 데이터의 양도 약 10배 이상 크게 차이난다. 또한 현재 채널에 전송되는 캡션 관련정보를 부가정보에 포함시켜 전송하므로 현재 어떤 언어들이 캡션으로 서비스되는지 등을 알 수 있다.At this time, EIA-708, which is a digital TV standard, has 16 captions, that is, 16 languages, which is about twice that of analog, and the amount of caption data transmitted per second is about 10 times or more. In addition, since caption-related information transmitted on the current channel is included in the additional information and transmitted, it is possible to know which languages are currently served as captions.

그리고 디지털 방송 초기에는 디지털 캡션이 제공되지 못하고 아날로그 캡션을 단순히 디지털로 변환하여 디지털 캡션 전송부분에 실어 보내게 된다.In the early days of digital broadcasting, digital captions are not provided, and analog captions are simply converted to digital and sent to the digital caption transmission part.

이하, 첨부된 도면을 참조하여 종래의 기술에 따른 디지털 티브이 수신기의 캡션정보 처리장치 및 방법을 설명하면 다음과 같다.Hereinafter, a caption information processing apparatus and method of a digital TV receiver according to the related art will be described with reference to the accompanying drawings.

도 1은 종래의 기술에 따른 디지털 티브이 수신기의 캡션정보 처리장치를 나타낸 블록도이고, 도 2는 종래의 기술에 따른 디지털 티브이 수신기의 캡션정보 처리방법을 나타낸 플로우챠트이다.1 is a block diagram illustrating a caption information processing apparatus of a digital TV receiver according to the prior art, and FIG. 2 is a flowchart illustrating a caption information processing method of the digital TV receiver according to the prior art.

종래의 기술에 따른 디지털 티브이 수신기의 캡션정보 처리장치는 도 1에 도시된 바와 같이, 안테나를 통해 수신된 디지털 방송신호를 선국하고 VSB 복조 및 오류정정을 통해 시간적으로 다중화된 트랜스포트 스트림 형태로 변환하는 튜너/복조부(11), 튜너/복조부(11)에서 출력된 트랜스포트 스트림을 역다중화하여 압축된 영상/음성 정보와 부가정보를 출력하는 디멀티플렉서(12), 디멀티플렉서(12)에서 출력된 영상/음성정보중 사용자정보에 포함된 캡션정보를 추출하는 영상 분리부(13), 영상 분리부(13)에서 출력된 영상/음성정보를 신장 및 복원시키는 앰펙 A/V 디코더(14), 영상 분리부(13)에서 출력된 캡션정보를 디코딩하고 그중 사용자가 선택한 캡션정보를 추출하여 해당 OSD를 구성하는 캡션 디코더(15), 디지털 티브이 수신기가 제공하는 기능 또는 사용자의 동작명령 처리결과 등을 화면상에 디스플레이하기 위한 사용자 인터페이스 화면 구성정보를 생성하는 GUI(Graphic User Interface) 프로세서(17), 앰펙 A/V 디코더(14)에서 출력된 영상신호와 캡션 디코더(15)에서 출력된 OSD 신호 및 GUI 프로세서(17)의 출력을 혼합하는 믹서(18), 믹서(18)의 출력에 상기 캡션 디코더(15)에서 출력된 아날로그 캡션정보를 포함하여 NTSC 신호형태로 변환하는 NTSC 엔코더(16), 상기 영상 분리부(13)에서 출력된 캡션정보에 따라 캡션종류를 파악하고 사용자가 선택한 캡션정보가 출력되도록 상기 캡션 디코더(15)를 제어하는 제어부(19)를 포함하여 구성된다.As shown in FIG. 1, the caption information processing apparatus of the digital TV receiver according to the related art tunes a digital broadcast signal received through an antenna and converts it into a temporally multiplexed transport stream through VSB demodulation and error correction. A demultiplexer 12 and a demultiplexer 12 outputting the compressed video / audio information and additional information by demultiplexing the transport stream output from the tuner / demodulator 11 and the tuner / demodulator 11 Image separation unit 13 for extracting caption information included in the user information of the video / audio information, the amplifier A / V decoder 14 for extending and restoring the video / audio information output from the image separation unit 13, video Caption decoder 15 for decoding the caption information output from the separating unit 13 and extracting the caption information selected by the user, and configuring the OSD, the function or use provided by the digital TV receiver Image signal and caption decoder 15 output from the Graphic User Interface (GUI) processor 17 and the amplifier A / V decoder 14 for generating user interface screen configuration information for displaying the operation command processing result of the user on the screen. Mixer 18 to mix the OSD signal output from the output and the GUI processor 17, and converts to NTSC signal form including the analog caption information output from the caption decoder 15 in the output of the mixer 18 NTSC encoder 16, the control unit 19 for capturing the caption type according to the caption information output from the image separation unit 13 and controlling the caption decoder 15 so that the caption information selected by the user is output. do.

이와 같이 구성된 종래기술의 캡션정보 처리방법을 설명하면 다음과 같다.Referring to the caption information processing method of the prior art configured as described above is as follows.

먼저, 제어부(19)는 사용자가 선택한 채널의 음성/영상 PID(Packet ID)를 디멀티플렉서(12)에 셋팅하고 그에 따라 디멀티플렉서(12)가 해당 음성/영상신호와 부가정보를 역다중화하여 영상 분리부(13)로 전송한다.First, the controller 19 sets the voice / video PID (Packet ID) of the channel selected by the user to the demultiplexer 12, and accordingly, the demultiplexer 12 demultiplexes the corresponding audio / video signal and additional information, thereby separating the image. Transfer to (13).

이어서 영상 분리부(13)에서 분리된 음성/영상신호는 앰펙 A/V 디코더(14)에서 신장 및 복원되고 영상신호와 음성신호가 출력된다.Subsequently, the audio / video signal separated by the image separator 13 is decompressed and restored by the amplifier A / V decoder 14, and the video and audio signals are output.

한편, 도 2와 같이, 제어부(19)는 사용자가 리모컨 또는 본체의 키를 이용하여 캡션모드를 선택하는지 여부를 판단한다(S21).On the other hand, as shown in Figure 2, the controller 19 determines whether the user selects the caption mode by using the keys of the remote control or the main body (S21).

이어서 상기 판단결과(S21), 사용자가 캡션모드를 선택하였으면 현재 제공되는 디지털 캡션의 종류를 화면상에 디스플레이하고 영상 분리부(13)를 제어하여 현재 영상신호중 사용자정보에 포함된 캡션정보가 추출되도록 한다(S22).Subsequently, when the user selects the caption mode, the determination result (S21) displays the type of digital caption currently provided on the screen and controls the image separator 13 to extract caption information included in the user information from the current image signal. (S22).

그리고 상기 추출된 캡션정보가 아날로그 캡션인지 디지털 캡션인지 판단한다(S23).Then, it is determined whether the extracted caption information is an analog caption or a digital caption (S23).

이어서 상기 판단결과(S23), 디지털 캡션이면 캡션 디코더(15)를 제어하여 해당 캡션정보를 해석하고(S24), 해당 캡션코드에 따른 OSD를 구성하여 화면상에 디스플레이 되도록 한다(S25).Subsequently, in the determination result (S23), if the digital caption, the caption decoder 15 is controlled to interpret the caption information (S24), and the OSD according to the caption code is configured to be displayed on the screen (S25).

한편, 상기 판단결과(S23), 아날로그 캡션이면 외부출력용 영상신호의 VBI(Vertical Blanking Internal)구간의 이븐필드(Even Field) 21번째 라인에 삽입할 수 있도록 NTSC 엔코더(16)로 전송한다(S26).On the other hand, if the determination result (S23), the analog caption is transmitted to the NTSC encoder 16 to be inserted into the 21st line of the Even Field of the VBI (Vertical Blanking Internal) section of the external output video signal (S26). .

그리고 캡션모드가 해제되었는지 판단하여(S27), 캡션모드가 해제되지 않았으면 상기 단계(S22)로 복귀하여 다음 입력되는 캡션정보를 처리한다.Then, it is determined whether the caption mode is released (S27). If the caption mode is not released, the process returns to step S22 to process the next input caption information.

종래의 기술에 따른 디지털 티브이 수신기는 아날로그 캡션을 외부출력용으로 처리하고 디지털 캡션처리를 수행하지 못하여 화면상에 디스플레이되지 않으므로 사용자가 캡션을 시청할 수 없는 문제점이 있다.The digital TV receiver according to the prior art processes the analog caption for an external output and does not perform the digital caption processing so that the digital TV receiver cannot display the caption.

따라서 본 발명은 상기한 종래의 문제점을 해결하기 위하여 안출한 것으로서, 아날로그/디지털에 상관없이 캡션정보를 처리하여 화면상에 디스플레이할 수 있도록 한 디지털 티브이 수신기의 캡션정보 처리장치 및 방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-described problems, and provides an apparatus and method for caption information processing of a digital TV receiver capable of processing and displaying caption information regardless of analog / digital on the screen. There is a purpose.

도 1은 종래의 기술에 따른 디지털 티브이 수신기의 캡션정보 처리장치를 나타낸 블록도1 is a block diagram showing an apparatus for processing caption information of a digital TV receiver according to the related art.

도 2는 종래의 기술에 따른 디지털 티브이 수신기의 캡션정보 처리방법을 나타낸 플로우챠트2 is a flowchart illustrating a caption information processing method of a digital TV receiver according to the related art.

도 3은 본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리장치를 나타낸 블록도3 is a block diagram showing an apparatus for processing caption information of a digital TV receiver according to the present invention.

도 4는 본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리방법을 나타낸 플로우챠트4 is a flowchart illustrating a caption information processing method of a digital TV receiver according to the present invention.

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

21: 튜너/복조부 22: 디멀티플렉서21 tuner / demodulator 22: demultiplexer

23: 영상분리부 24: 앰펙 A/V 디코더23: video separator 24: amplek A / V decoder

25: 캡션 디코더 26: NTSC 엔코더25: Caption Decoder 26: NTSC Encoder

27: GUI 프로세서 28: 믹서27: GUI processor 28: Mixer

29: 제어부 30: 캡션 변환부29: control unit 30: caption conversion unit

본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리장치는 트랜스포트 스트림에 포함된 아날로그/디지털 캡션정보를 디코딩하고 해당 OSD를 구성하는 캡션 디코더, 캡션 디코더에서 디코딩된 아날로그 캡션을 디지털 캡션으로 변환하여 상기 캡션 디코더로 피드백 시키는 캡션 변환부, 사용자의 아날로그 캡션모드 선택에 따라 캡션 디코더에서 출력된 아날로그 캡션이 코드 변환부를 통해 디지털 캡션으로 변환되도록 하는 제어부를 포함하여 구성됨을 특징으로 한다.The caption information processing apparatus of a digital TV receiver according to the present invention decodes analog / digital caption information included in a transport stream and converts the caption decoder constituting the OSD and the analog caption decoded by the caption decoder into digital captions. Caption converter for feeding back to the decoder, the analog caption output from the caption decoder according to the user's selection of the analog caption mode is configured to include a control unit for converting to a digital caption through the code converter.

본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리방법은 사용자가 캡션모드를 선택하면 현재 선국된 채널의 캡션정보를 추출하여 아날로그 캡션인지 디지털 캡션인지 여부를 판단하는 단계, 그 판단결과 디지털 캡션이면 캡션정보를 디코딩하고 해당 OSD를 구성하여 화면상에 디스플레이하는 단계, 그 판단결과 아날로그 캡션이고 아날로그 캡션모드가 선택된 상태이면 아날로그 캡션을 디지털 캡션으로 변환하여 디코딩하고 해당 OSD를 구성하여 화면상에 디스플레이하는 단계를 포함함을 특징으로 한다.In the caption information processing method of the digital TV receiver according to the present invention, if the user selects a caption mode, the caption information of the currently tuned channel is extracted to determine whether it is an analog caption or a digital caption. Decoding and configuring the OSD and displaying the OSD on the screen.If the result is the analog caption and the analog caption mode is selected, converting the analog caption to the digital caption and decoding and configuring the OSD to display on the screen. It is characterized by including.

이하, 첨부된 도면을 참조하여 본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리장치 및 방법의 바람직한 일실시예를 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the caption information processing apparatus and method of a digital TV receiver according to the present invention.

도 3은 본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리장치를 나타낸 블록도이고, 도 4는 본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리방법을 나타낸 플로우챠트이다.3 is a block diagram illustrating a caption information processing apparatus of a digital TV receiver according to the present invention, and FIG. 4 is a flowchart illustrating a caption information processing method of the digital TV receiver according to the present invention.

본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리장치는 도 3에 도시된 바와 같이, 안테나를 통해 수신된 디지털 방송신호를 선국하고 VSB 복조 및 오류정정을 통해 시간적으로 다중화된 트랜스포트 스트림 형태로 변환하는 튜너/복조부(21), 튜너/복조부(21)에서 출력된 트랜스포트 스트림을 역다중화하여 압축된 영상/음성 정보와 부가정보를 출력하는 디멀티플렉서(22), 디멀티플렉서(22)에서 출력된 영상/음성정보중 사용자정보에 포함된 캡션정보를 추출하는 영상 분리부(23), 영상 분리부(23)에서 출력된 영상/음성정보를 신장 및 복원시키는 앰펙 A/V 디코더(24), 영상 분리부(23)에서 출력된 캡션정보를 디코딩하고 그중 사용자가 선택한 캡션정보를 추출하여 해당 OSD를 구성하는 캡션 디코더(25), 디지털 티브이 수신기가 제공하는 기능 또는 사용자의 동작명령 처리결과 등을 화면상에 디스플레이하기 위한 사용자 인터페이스 화면 구성정보를 생성하는 GUI(Graphic User Interface) 프로세서(27), 앰펙 A/V 디코더(24)에서 출력된 영상신호와 캡션 디코더(25)에서 출력된 OSD 신호 및 GUI 프로세서(27)의 출력을 혼합하는 믹서(28), 믹서(28)의 출력에 상기 캡션 디코더(25)에서 출력된 아날로그 캡션정보를 포함하여 NTSC 신호형태로 변환하는 NTSC 엔코더(26), 상기 영상 분리부(23)에서 출력된 캡션정보에 따라 캡션종류를 파악하고 사용자가 선택한 캡션정보가 출력되도록 상기 캡션 디코더(25)를 제어하는 제어부(29), 캡션 디코더(25)에서 출력된 아날로그 캡션 코드를 디지털 캡션 코드로 변환하여 캡션 디코더(25)로 피드백시키는 캡션 변환부(30)를 포함하여 구성된다.As shown in FIG. 3, the caption information processing apparatus of the digital TV receiver according to the present invention tunes a digital broadcast signal received through an antenna and converts the digital broadcast signal into a temporally multiplexed transport stream through VSB demodulation and error correction. Demultiplexer 22 and demultiplexer 22 outputting compressed video / audio information and additional information by demultiplexing the transport stream output from tuner / demodulator 21 and tuner / demodulator 21 Image separation unit 23 for extracting caption information included in the user information / audio information, the amplifier A / V decoder 24 for extending and restoring the image / audio information output from the image separation unit 23, image separation The caption decoder 25 configured to decode the caption information output from the unit 23 and extract the caption information selected by the user and to configure the OSD. A graphic user interface (GUI) processor 27 for generating user interface screen configuration information for displaying operation command processing results and the like, and an image signal and a caption decoder 25 output from the amplifier A / V decoder 24. NTSC converts the NTSC signal form by including the analog caption information output from the caption decoder 25 in the mixer 28 and the output of the mixer 28 to mix the OSD signal and the output of the GUI processor 27 output from the The control unit 29 and the caption decoder 25 for capturing the caption type according to the caption information output from the encoder 26 and the image separator 23 and controlling the caption decoder 25 to output the caption information selected by the user. And a caption converter 30 converting the analog caption code outputted from the digital signal into a digital caption code and feeding it back to the caption decoder 25.

이와 같이 구성된 본 발명의 캡션정보 처리방법을 설명하면 다음과 같다.Referring to the caption information processing method of the present invention configured as described above are as follows.

먼저, 제어부(29)는 사용자가 선택한 채널의 음성/영상 PID(Packet ID)를 디멀티플렉서(22)에 셋팅하고 그에 따라 디멀티플렉서(22)가 해당 음성/영상신호와 부가정보를 역다중화하여 영상 분리부(23)로 전송한다.First, the control unit 29 sets the voice / video PID (Packet ID) of the channel selected by the user to the demultiplexer 22, and accordingly, the demultiplexer 22 demultiplexes the corresponding audio / video signal and the additional information, thereby separating the video separator. Transfer to 23.

이어서 영상 분리부(23)에서 분리된 음성/영상신호는 앰펙 A/V 디코더(24)에서 신장 및 복원되고 영상신호와 음성신호가 출력된다.Subsequently, the audio / video signal separated by the video separator 23 is decompressed and reconstructed by the amplifier A / V decoder 24, and the video and audio signals are output.

한편, 도 4와 같이, 제어부(29)는 사용자가 리모컨 또는 본체의 키를 이용하여 캡션모드를 선택하는지 여부를 판단한다(S41).On the other hand, as shown in Figure 4, the control unit 29 determines whether the user selects the caption mode by using the keys of the remote control or the main body (S41).

이어서 상기 판단결과(S41), 사용자가 캡션모드를 선택하였으면 트랜스포트 스트림에 포함된 부가정보중 PMT(Program Map Table) 및 EIT(Event Information Table)를 참조하여 현재 제공되는 디지털 캡션의 종류를 디스플레이 하거나 아날로그 캡션의 종류를 화면상에 디스플레이하고(S42), 이중 사용자가 원하는 캡션 종류를 선택할 수 있도록 한다.Subsequently, when the user selects the caption mode (S41), the type of digital caption currently displayed is displayed by referring to a PMT (Program Map Table) and an EIT (Event Information Table) among the additional information included in the transport stream. The type of analog caption is displayed on the screen (S42), and a dual user can select a desired caption type.

따라서 사용자는 자신이 시청하기 원하는 캡션 즉, 디지털/아날로그중 하나와 해당 캡션에서 제공되는 언어중 하나를 선택한다.Therefore, the user selects one of the captions that he / she wants to watch, that is, one of digital / analog and a language provided in the caption.

그리고 영상 분리부(23)를 제어하여 현재 영상신호중 사용자정보에 포함된 캡션정보가 추출되도록 한다(S43).Then, the image separator 23 is controlled to extract caption information included in the user information from the current image signal (S43).

그리고 상기 추출된 캡션정보가 아날로그 캡션인지 디지털 캡션인지 판단한다(S44).Then, it is determined whether the extracted caption information is an analog caption or a digital caption (S44).

이어서 상기 판단결과(S44), 아날로그 캡션이면 사용자가 아날로그 캡션을 선택하였는지 여부를 판단한다(S45).Subsequently, in the determination result (S44), if it is an analog caption, it is determined whether the user selects the analog caption (S45).

그리고 상기 판단결과(S45), 사용자가 아날로그 캡션을 선택하였으면 캡션 디코더(25)에서 출력된 아날로그 캡션이 캡션 변환부(30)를 통해 디지털 캡션으로 변환되도록 한다(S46).When the user selects an analog caption, the determination result (S45) causes the analog caption output from the caption decoder 25 to be converted into a digital caption through the caption converter 30 (S46).

이때 캡션 변환부(30)는 아날로그 캡션 규격인 EIA-608에 준하는 캡션코드를 디지털 캡션규격인 EIA-708에 준하는 캡션코드로 변환한다.At this time, the caption converter 30 converts a caption code according to EIA-608, which is an analog caption standard, into a caption code according to EIA-708, a digital caption standard.

또한, 상기 판단결과(S45), 아날로그 캡션이 선택되지 않았으면 외부출력용 영상신호의 VBI(Vertical Blanking Internal)구간의 이븐필드(Even Field) 21번째 라인에 삽입할 수 있도록 NTSC 엔코더(26)로 전송한다(S47).In addition, if the analog caption is not selected, the determination result (S45) is transmitted to the NTSC encoder 26 to be inserted into the 21st line of the Even Field of the VBI (Vertical Blanking Internal) section of the external output video signal. (S47).

한편, 상기 판단결과(S44), 디지털 캡션이면 캡션 디코더(25)를 제어하여 해당 캡션정보를 해석하고(S48), 해당 캡션코드에 따른 OSD를 구성하여 화면상에 디스플레이 되도록 한다(S49).On the other hand, if the determination result (S44), the digital caption control the caption decoder 25 to interpret the corresponding caption information (S48), and configure the OSD according to the caption code to be displayed on the screen (S49).

그리고 캡션모드가 해제되었는지 판단하여(S50), 캡션모드가 해제되지 않았으면 상기 단계(S43)로 복귀하여 다음 입력되는 캡션정보를 처리한다.If it is determined that the caption mode has been released (S50), and if the caption mode has not been released, the process returns to step S43 to process the next input caption information.

본 발명에 따른 디지털 티브이 수신기의 캡션정보 처리장치 및 방법은 기존에 디스플레이하지 못했던 아날로그 캡션을 코드변환을 통해 디지털 캡션으로 변환하고 화면상에 디스플레이하여 사용자에게 아날로그/디지털 캡션에 상관없이 다양한 캡션 디스플레이 모드를 제공하므로 성능향상에 따른 타제품과의 차별화 효과를 얻을 수 있다.The caption information processing apparatus and method of the digital TV receiver according to the present invention converts analog captions that were not previously displayed into digital captions through code conversion and displays them on the screen to display various caption display modes regardless of analog / digital captions to the user. As a result, it is possible to obtain differentiation effect from other products according to performance improvement.

Claims (3)

디지털 티브이 수신기에 있어서,In a digital TV receiver, 트랜스포트 스트림에 포함된 아날로그/디지털 캡션정보를 디코딩하고 해당 OSD를 구성하는 캡션 디코더,Caption decoder that decodes analog / digital caption information included in the transport stream and configures the corresponding OSD, 상기 캡션디코더에서 디코딩된 아날로그 캡션을 디지털 캡션으로 변환하여 상기 캡션 디코더로 피드백 시키는 캡션 변환부,A caption converter converting the analog caption decoded by the caption decoder into a digital caption and feeding the feedback back to the caption decoder; 사용자의 아날로그 캡션모드 선택에 따라 상기 캡션 디코더에서 출력된 아날로그 캡션이 상기 코드 변환부를 통해 디지털 캡션으로 변환되도록 하는 제어부를 포함하여 구성됨을 특징으로 하는 디지털 티브이 수신기의 캡션정보 처리장치.And a control unit for converting an analog caption output from the caption decoder into a digital caption through the code converter according to a user's selection of an analog caption mode. 디지털 티브이 수신기의 캡션정보 처리방법에 있어서,In the caption information processing method of the digital TV receiver, 사용자가 캡션모드를 선택하면 현재 선국된 채널의 캡션정보를 추출하여 아날로그 캡션인지 디지털 캡션인지 여부를 판단하는 단계,When the user selects a caption mode, extracting caption information of the currently tuned channel to determine whether the caption is an analog caption or a digital caption; 상기 판단결과 디지털 캡션이면 캡션정보를 디코딩하고 해당 OSD를 구성하여 화면상에 디스플레이하는 단계,If it is determined that the digital caption is decoded, decoding the caption information, configuring a corresponding OSD, and displaying the caption information on the screen; 상기 판단결과 아날로그 캡션이고 아날로그 캡션모드가 선택된 상태이면 상기 아날로그 캡션을 디지털 캡션으로 변환하여 디코딩하고 해당 OSD를 구성하여 화면상에 디스플레이하는 단계를 포함함을 특징으로 하는 디지털 티브이 수신기의 캡션정보 처리방법.And if the analog caption is selected and the analog caption mode is selected, converting the analog caption into a digital caption, decoding the same, configuring a corresponding OSD, and displaying the caption information of the digital TV receiver. . 제2 항에 있어서,The method of claim 2, 상기 사용자가 캡션모드를 선택하면 현재 선국된 채널에서 제공되는 아날로그 또는 디지털 캡션의 종류를 디스플레이하는 단계를 더 포함함을 특징으로 하는 디지털 티브이 수신기의 캡션정보 처리방법.If the user selects a caption mode, displaying the type of analog or digital caption provided in the currently tuned channel.
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