KR100571982B1 - Broadcasting-receiver displaying existence or non-existence of mheg data within transmitting data - Google Patents
Broadcasting-receiver displaying existence or non-existence of mheg data within transmitting data Download PDFInfo
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- KR100571982B1 KR100571982B1 KR1019990001544A KR19990001544A KR100571982B1 KR 100571982 B1 KR100571982 B1 KR 100571982B1 KR 1019990001544 A KR1019990001544 A KR 1019990001544A KR 19990001544 A KR19990001544 A KR 19990001544A KR 100571982 B1 KR100571982 B1 KR 100571982B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
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Abstract
디지털방송에 MHEG데이타의 포함여부를 디지털 수상기에 나타내는, MHEG데이타의 전송유무를 표시하는 방송수상기는, TS스트림형태로 전송되는 디지털방송신호의 특정 섹션(section)을 검사하여 MHEG데이타가 디지털방송신호에 포함되어 있는지를 파악하고, 이러한 포함여부를 표시하기 위한 표시수단으로서의 LED를 방송수신기에 구비하고 있다. 따라서, 본 발명은 시청자로 하여금 디지털방송 시청과 동시에 MHEG데이타의 전송유무를 정확히 확인할 수 있도록 하는 효과가 있다.The broadcast receiver indicating whether the MHEG data is included in the digital receiver, indicating whether or not the MHEG data is transmitted, examines a specific section of the digital broadcast signal transmitted in the TS stream form, and the MHEG data is converted into a digital broadcast signal. Is included in the broadcast receiver and is provided with an LED as a display means for indicating the inclusion. Therefore, the present invention has an effect that allows the viewer to accurately check the presence or absence of the transmission of MHEG data at the same time watching digital broadcasting.
색인어 누락Missing Index Word
Description
도 1은 본 발명의 실시예에 따른 MHEG데이타의 전송유무를 표시하는 방송수상기의 구성블록도.1 is a configuration block diagram of a broadcast receiver indicating the presence or absence of transmission of MHEG data according to an embodiment of the present invention.
※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing
101 : 튜너부 102 : OFDM복조부101: tuner unit 102: OFDM demodulation unit
103 : FEC부 104 : 역다중화기103: FEC part 104: demultiplexer
105 : MPEG디코더 106 : MMI부105: MPEG decoder 106: MMI unit
107 : CRT 108 : 제어부107: CRT 108: control unit
109 : LED109: LED
본 발명은 디지털방송을 수신하는 방송수신장치에 관한 것으로, 보다 상세하게는, 디지털방송에 MHEG데이타가 포함되어 있는 지를 디지털 수상기에 나타내는, MHEG데이타의 전송유무를 표시하는 방송수상기에 관한 것이다.The present invention relates to a broadcast receiving apparatus for receiving digital broadcasts, and more particularly, to a broadcast receiver for displaying whether or not MHEG data is transmitted to a digital receiver, indicating whether MHEG data is included in digital broadcasting.
멀티미디어 및 하이퍼미디어 통신을 위해 방대한 데이터를 압축하여 전송하기 위한 MPEG(Moving Picture Exports Group)표준들 중, MPEG-2는 차세대 지상파 방송, 위성방송 등에 적용되는 국제표준이다. MPEG-2에서는 동영상, 음향 그리고 기타 부가정보에 대한 각종 신호들을 비트스트림(bit stream)으로 패킷(packet)화하도록 규정하고 있는데, 이러한 패킷화된 스트림의 형태로는 프로그램스트림(Program Stream, 이하 'PS스트림'이라 함)과 트랜스포트스트림 (Transport Stream, 이하 'TS스트림'이라 함)이 있다. 이중 디지털방송에서는 방송신호의 전송시 발생될 수 있는 신호오류의 문제점들에 효율적으로 대응하기 위해, TS스트림 형태로 신호전송이 이루어지고 있다.Among the MPEG (Moving Picture Exports Group) standards for compressing and transmitting a large amount of data for multimedia and hypermedia communication, MPEG-2 is an international standard for next-generation terrestrial broadcasting and satellite broadcasting. MPEG-2 specifies that packets for video, sound, and other additional information are packetized into bit streams. In the form of such packetized streams, program streams (hereinafter, referred to as' PS stream) and a transport stream (hereinafter, referred to as a TS stream). In the digital broadcasting, in order to efficiently cope with problems of signal errors that may occur when transmitting broadcast signals, signal transmission is performed in the form of TS stream.
디지털방송시 송신측에서는 TS스트림에 다수의 정보를 실어서 송출하게 된다. 실질적인 방송프로그램을 제외한 다수의 정보들 중에는 MHEG(Multimedia and Hypermedia information coding Exports Group)데이타가 있다. MHEG은 멀티미디어정보ㆍ수순ㆍ조작 등과, 그들의 조합을 하나의 객체(object)로 부호화해서 멀티미디어 또는 하이퍼미디어 타이틀로 제작하기 위한 시나리오 기술방법에 관한 국제표준이며, MHEG데이타는 이러한 타이틀제작에 이용되는 데이터이다.In digital broadcasting, the transmitting side transmits a plurality of pieces of information in TS stream. Among the various information except the actual broadcast program, there is MHEG (Multimedia and Hypermedia information coding Exports Group) data. MHEG is an international standard for scenario description for producing multimedia or hypermedia titles by encoding a combination of multimedia information, procedures, operations, etc. into one object, and MHEG data is used for producing such titles. to be.
종래 방송수상기는 MHEG데이타가 디지털방송신호에 포함되어 전송되는 경우화면의 소정위치에 MHEG데이타가 전송되고 있음을 특수도형이나 부호 등의 형태로 표시하였으며, 시청자는 이를 확인한 후 방송수상기를 조종하여 MHEG데이터를 시청하였다.In the conventional broadcast receiver, when the MHEG data is included in the digital broadcast signal and transmitted, the MHEG data is displayed in the form of a special figure or a sign such that the MHEG data is transmitted to a predetermined position on the screen. The data was viewed.
하지만, 종래에는 기본적인 디지털방송영상과 MHEG데이타의 전송을 나타내는표시를 방송수상기의 화면에 동시에 디스플레이했으므로, MHEG데이타의 전송유무를시청자가 확인하지 못하는 경우가 많았다. However, in the past, a display indicating the transmission of basic digital broadcasting video and MHEG data was simultaneously displayed on the screen of the broadcast receiver, so that the viewer could not confirm the transmission of MHEG data.
따라서, 본 발명은 전술한 문제점을 해결할 수 있도록, 현재 전송되고 있는디지털 방송신호에 MHEG데이타가 전송되고 있는 지를 검출하고 이를 방송수상기 외부에 표시하므로써 시청자로 하여금 MHEG데이타의 전송유무를 파악할 수 있도록 하는, MHEG데이타 전송유무를 표시하는 방송수상기를 제공함에 있다.Therefore, in order to solve the above-mentioned problem, the present invention detects whether MHEG data is being transmitted to a digital broadcast signal that is currently being transmitted and displays it outside the broadcast receiver so that the viewer can determine whether MHEG data is transmitted. In addition, the present invention provides a broadcast receiver for displaying the presence or absence of MHEG data transmission.
이와 같은 목적을 달성하기 위한 MHEG데이타의 전송유무를 표시하는 방송수상기는, 디지털방송신호를 튜닝하기 위한 튜너부; 상기 튜닝된 디지털방송신호를 구문분석(parsing)하여 디지탈방송정보를 추출해 내는 정보추출부; 상기 추출된 디지탈방송정보로부터 상기 디지털방송신호에 MHEG데이타의 포함여부를 검출하고, 상기 검출여부를 표시하기 위한 제어신호를 출력하는 제어부; 및, 상기 방송수신장치외부에 위치하여 상기 제어부로부터 입력받은 제어신호에 따라 점등되는 표시수단을 포함한다.The broadcast receiver which displays the presence or absence of transmission of MHEG data for achieving the above object comprises: 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 for detecting whether MHEG data is included in the digital broadcasting signal from the extracted digital broadcasting information, and outputting a control signal for indicating whether the digital broadcasting signal is included; And display means positioned outside the broadcast receiving apparatus and turned on according to a control signal received from the controller.
이하, 첨부한 도면을 참조하여 본 발명의 실시예를 상세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 바람직한 실시예에 따른 MHEG데이타의 전송유무를 표시하는 방송수상기의 블록구성도이다.1 is a block diagram of a broadcast receiver indicating the presence or absence of transmission of MHEG data according to an embodiment of the present invention.
도시한 바와 같이, 안테나(ANT)를 통해 디지털방송신호를 수신하는 튜너부(101)는 튜닝된 디지탈방송신호를 OFDM(Orthogonal Frequency Division Multiplexing)복조부(102)로 공급한다. OFDM복조부(102)는 튜닝된 디지털방송신호를 복조함으로써, 디지탈방송의 RF신호로부터 TS스트림을 추출해 낸다. FEC(Forward Error Correction)부(103)는 추출된 TS스트림에 대해 에러정정을 수행하며, 이 과정에서 디지털방송신호의 전송과정에서 포함될 수 있는 에러가 제거된다. 역다중화기(104)는 에러정정된 TS스트림을 구문분석(parsing)하여 TS스트림에 포함된 디지털방송의 비디오, 오디오 및 데이터스트림을 분리해 낸다. 역다중화기(104) 후단의 MPEG디코더(105)는 분리된 비디오 및 오디오스트림들을 복호하여, 영상디스플레이 및 음향출력을 위한 신호로 변환시킨다. MMI(Man Machine Interface)부(106)는 MPEG디코더(105)로부터 출력되는 방송신호를 디스플레이하기 위해 신호처리를 수행하며, 방송되는 지역의 방송신호형태에 맞추기 위한 NTSC/PAL변환 처리과정 등도 수행한다. CRT(107)는 MMI부(106)로부터 공급되는 영상신호를 디스플레이한다. 제어부(108)는 MHEG데이타를 처리하는 소프트웨어적인 MHEG디코더를 포함하고 있으며, 이 MHEG디코더는 MHEG데이타를 복호한다.As illustrated, the
TS스트림의 복호 및 재생에 있어서, 트랜스포트패킷의 패킷식별부호(PID; Packet IDentification)가 파악되고 나면, 프로그램사양정보(Program Specific Information)테이블에 의해 트랜스포트패킷에 들어있는 데이터의 내용들이 식별된다. 이러한 PSI테이블의 종류로는 PAT(Program Association Table)테이블, PMT(Program Map Table)테이블 등이 있다. PAT테이블은 PID가 '0'인 패킷에 의해 전송되는 특수정보로서, 프로그램번호 및 트랜스포트패킷의 PID값간의 대응(correspondence)을 제공한다. PMT테이블은 프로그램번호들과 이 프로그램들을 포함하는 기본(elementary)스트림들간의 맵핑(mapping)을 제공한다. PMT테이블은 다수의 디스크립터(descriptor)들을 포함하고 있으며, 이중 어플리케이션_부트_디스크립터(application_boot_descriptor)를 체크하면 MHEG데이타의 수신여부를 알 수 있다. MHEG데이타가 수신되었음을 확인했으면 즉, 디지털방송신호에 MHEG데이타가 포함되어 전송되고 있음을 확인했으면, TS스트림의 DSM-CC(Digital Storage Media Command and Control)섹션에서 MHEG데이타의 루트디렉토리(root directory)격인 서비스게이트웨이(Service Gateway)에 대한 정보를 구문분석하여 초기객체명(initial object name)을 알아낸다.In decoding and reproducing the TS stream, once the packet identification code (PID) of the transport packet is known, the contents of the data contained in the transport packet are identified by a Program Specific Information table. . Examples of such PSI tables include a program association table (PAT) table and a program map table (PMT) table. The PAT table is special information transmitted by a packet having a PID of '0', and provides a correspondence between a program number and a PID value of a transport packet. The PMT table provides a mapping between program numbers and elementary streams containing these programs. The PMT table includes a plurality of descriptors, and if the application_boot_descriptor is checked, the MHEG data may be received. If it is confirmed that the MHEG data is received, that is, the MHEG data is included in the digital broadcast signal and transmitted, the root directory of the MHEG data in the Digital Storage Media Command and Control (DSM-CC) section of the TS stream. The initial object name is obtained by parsing the information on the service gateway.
전술한 바와 같이, 이러한 과정은 소프트웨어적 엔진인 MHEG디코더를 내포하고 있는 제어부(108)에서 이루어진다. 제어부(108)는 LED (109)를 점등하므로써 TS스트림내에 MHEG데이타가 포함되어 전송되고 있음을 시청자에게 표시해 준다. 아울러 제어부(108)는 추출한 MHEG데이타를 디지털 TV화면상에 디스플레이 되도록 MMI부(l06)로 출력할 수도 있다.As described above, this process is performed in the
상술한 바와 같이, 본 발명은 디지털방송을 위한 TS스트림에 MHEG데이타가 전송되고 있음을 체크하여 방송수상기 외부에 표시해 주므로써, 시청자로 하여금 방송을 시청하면서 MHEG데이타의 전송유무를 정확히 확인할 수 있도록 하는 효과를 제공한다.As described above, the present invention checks that the MHEG data is being transmitted to the TS stream for digital broadcasting, and displays it on the outside of the broadcast receiver, so that the viewer can accurately check whether the MHEG data is transmitted while watching the broadcast. Provide effect.
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US4520392A (en) * | 1981-11-23 | 1985-05-28 | Zenith Electronics Corporation | Teletext reception indicator |
KR940019142A (en) * | 1993-01-29 | 1994-08-19 | 로버트 디. 쉐드 | Closed caption status display system |
JPH09139925A (en) * | 1995-11-13 | 1997-05-27 | Hitachi Ltd | Magnetic recording and reproducing device |
KR19990001204A (en) * | 1997-06-13 | 1999-01-15 | 배순훈 | Television receiver with voice multi-channel search |
KR20000045551A (en) * | 1998-12-30 | 2000-07-25 | 윤종용 | Broadcasting receiver capable of displaying whether sub title information is transmitted or not on outer screen |
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1999
- 1999-01-19 KR KR1019990001544A patent/KR100571982B1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4520392A (en) * | 1981-11-23 | 1985-05-28 | Zenith Electronics Corporation | Teletext reception indicator |
KR940019142A (en) * | 1993-01-29 | 1994-08-19 | 로버트 디. 쉐드 | Closed caption status display system |
JPH09139925A (en) * | 1995-11-13 | 1997-05-27 | Hitachi Ltd | Magnetic recording and reproducing device |
KR19990001204A (en) * | 1997-06-13 | 1999-01-15 | 배순훈 | Television receiver with voice multi-channel search |
KR20000045551A (en) * | 1998-12-30 | 2000-07-25 | 윤종용 | Broadcasting receiver capable of displaying whether sub title information is transmitted or not on outer screen |
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