KR100666285B1 - 데이터복호화장치및데이터복호화방법 - Google Patents
데이터복호화장치및데이터복호화방법 Download PDFInfo
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- KR100666285B1 KR100666285B1 KR1019970709319A KR19970709319A KR100666285B1 KR 100666285 B1 KR100666285 B1 KR 100666285B1 KR 1019970709319 A KR1019970709319 A KR 1019970709319A KR 19970709319 A KR19970709319 A KR 19970709319A KR 100666285 B1 KR100666285 B1 KR 100666285B1
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- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
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- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
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- Television Signal Processing For Recording (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
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Abstract
Description
Claims (18)
- 적어도 디지털 영상 신호와 문자 데이터를 포함하는 비트 스트림 데이터를 입력하여, 디지털 영상 신호와 문자 데이터를 복호하는 데이터 복호화 장치에 있어서:상기 입력한 비트 스트림 데이터로부터 상기 문자 데이터를 추출하는 추출 수단과;상기 추출된 문자 데이터의 에러를 검출하는 에러 검출 수단과;상기 에러가 검출된 문자 데이터를 에러가 없는 문자 데이터로 치환하는 치환 수단을 포함하는 것을 특징으로 하는, 데이터 복호화 장치.
- 제 1 항에 있어서,상기 문자 데이터는 비트 맵 형식의 데이터이고,상기 에러 검출 수단은 에러를 포함하는 라인을 검출하며,상기 치환 수단은 에러가 없는 라인으로 치환하도록 한 것을 특징으로 하는, 데이터 복호화 장치.
- 제 2 항에 있어서,상기 치환 수단은,상기 문자 데이터를 기억하는 버퍼 메모리를 구비하며,에러를 포함하는 라인을 판독하는 대신에, 상기 버퍼 메모리를 랜덤 액세스하여 에러를 포함하는 라인의 부근 라인의 데이터를 판독하도록 한 것을 특징으로 하는, 데이터 복호화 장치.
- 제 3 항에 있어서,상기 에러 검출 수단은:상기 문자 데이터에 포함되어 있는 라인 종단 식별 코드를 검출할 때마다 카운트를 증가하는 카운터 수단과;에러가 검출되었을 때의 상기 카운터 수단의 카운트 값을 라인 번호로서 기억하는 레지스터를 포함하고,상기 치환 수단은:실제로 문자 데이터를 표시하기 위해서 상기 버퍼 메모리로부터 판독되는 라인의 라인 번호보다도 선행하는 라인 번호를 발생하는 수단과;상기 발생된 라인 번호와 상기 레지스터에 기억된 에러를 포함하는 라인 번호를 비교하는 수단과;상기 비교의 결과, 라인 번호가 일치하였을 때에, 1 라인 앞, 또는 1 라인 뒤의 데이터를 상기 버퍼 메모리로부터 판독하는 수단을 포함하는 것을 특징으로 하는, 데이터 복호화 장치.
- 제 4 항에 있어서,기록 매체에 기억되어 있는 정보를 재생하여, 상기 비트 스트림 데이터를 출력하는 재생 수단을 더 포함하는 것을 특징으로 하는, 데이터 복호화 장치.
- 제 5 항에 있어서,상기 문자 데이터는 문자를 표시하기 위한 데이터인 것을 특징으로 하는, 데이터 복호화 장치.
- 제 4 항에 있어서,디지털 텔레비젼 방송 신호를 수신하여 복조 처리함으로써 상기 비트 스트림 데이터를 출력하는 수신 수단을 더 포함하는 것을 특징으로 하는, 데이터 복호화 장치.
- 제 7 항에 있어서,상기 문자 데이터는 문자를 표시하기 위한 데이터인 것을 특징으로 하는, 데이터 복호화 장치.
- 제 7 항에 있어서,상기 문자 데이터는 프로그램 가이드를 표시하기 위한 데이터인 것을 특징으로 하는, 데이터 복호화 장치.
- 적어도 디지털 영상 신호와 문자 데이터를 포함하는 비트 스트림 데이터를 입력하여, 디지털 영상 신호와 문자 데이터를 복호하는 데이터 복호화 방법에 있어서:상기 입력한 비트 스트림 데이터로부터 상기 문자 데이터를 추출하고;상기 추출된 문자 데이터의 에러를 검출하고;상기 에러가 검출된 문자 데이터를 에러가 없는 문자 데이터로 치환하도록 하는 것을 특징으로 하는, 데이터 복호화 방법.
- 제 10 항에 있어서,상기 문자 데이터는 비트 맵 형식의 데이터이고,상기 에러 검출은 에러를 포함하는 라인을 검출하고,상기 치환은 에러가 없는 라인으로 치환하는 것에 의해 수행되는 것을 특징으로 하는, 데이터 복호화 방법.
- 제 11 항에 있어서,상기 치환은,상기 문자 데이터를 버퍼 메모리에 기억하고,에러를 포함하는 라인을 판독하는 대신에, 상기 버퍼 메모리를 랜덤 액세스하여 에러를 포함하는 라인의 부근 라인의 데이터를 판독하도록 한 것을 특징으로 하는, 데이터 복호화 방법.
- 제 12 항에 있어서,상기 에러 검출은:상기 문자 데이터에 포함되어 있는 라인 종단 식별 코드를 검출할 때마다 카운터의 카운트를 증가하고;에러가 검출되었을 때의 상기 카운터의 카운트 값을 라인 번호로서 레지스터에 기억하며,상기 치환은:실제로 문자 데이터를 표시하기 위해서 상기 버퍼 메모리로부터 판독되는 라인의 라인 번호보다도 선행하는 라인 번호를 발생하고;상기 발생된 라인 번호와 상기 레지스터에 기억된 에러를 포함하는 라인 번호를 비교하고;상기 비교의 결과, 라인 번호가 일치하였을 때에, 1 라인 앞, 또는 1 라인 뒤의 데이터를 상기 버퍼 메모리로부터 판독하는 것을 특징으로 하는, 데이터 복호화 방법.
- 제 13 항에 있어서,상기 비트 스트림 테이터는 상기 기록 매체에 기억되어 있는 정보를 재생하는 것에 의해 출력된 데이터인 것을 특징으로 하는, 데이터 복화화 방법.
- 제 14 항에 있어서,상기 문자 데이터는 문자를 표시하기 위한 데이터인 것을 특징으로 하는, 데이터 복호화 방법.
- 제 13 항에 있어서,상기 비트 스트림 데이터는, 디지털 텔레비젼 방송 신호를 수신하고 복조 처리하는 것에 의해 출력된 데이터인 것을 특징으로 하는, 데이터 복호화 방법.
- 제 16 항에 있어서,상기 문자 데이터는 문자를 표시하기 위한 데이터인 것을 특징으로 하는, 데이터 복호화 방법.
- 제 16 항에 있어서,상기 문자 데이터는 프로그램 가이드를 표시하기 위한 데이터인 것을 특징으로 하는, 데이터 복호화 방법.
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EP (1) | EP0833508B1 (ko) |
JP (1) | JP4642161B2 (ko) |
KR (1) | KR100666285B1 (ko) |
DE (1) | DE69734496T2 (ko) |
ES (1) | ES2247626T3 (ko) |
WO (1) | WO1997039578A1 (ko) |
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WO2004080069A1 (ja) * | 1995-01-24 | 2004-09-16 | Hiroki Zenda | マルチメディアコンピュータシステム |
JP3937564B2 (ja) * | 1998-03-24 | 2007-06-27 | 三菱電機株式会社 | ディジタルビデオ受信装置 |
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KR100565571B1 (ko) * | 1999-02-10 | 2006-03-29 | 엘지전자 주식회사 | 디지털 티브이의 캡션 정보 처리 장치 |
JP4161487B2 (ja) * | 1999-11-01 | 2008-10-08 | ソニー株式会社 | データ復号装置及び方法 |
KR20010101929A (ko) * | 1999-12-02 | 2001-11-15 | 마츠시타 덴끼 산교 가부시키가이샤 | 영상기록장치, 영상기록방법 및 영상레이트 조정장치 |
KR100631499B1 (ko) * | 2000-01-24 | 2006-10-09 | 엘지전자 주식회사 | 디지털 티브이의 캡션 표시 방법 |
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US20050246747A1 (en) * | 2003-03-31 | 2005-11-03 | Matsushita Electric Industrial Co., Ltd. | Utilization of data broadcasting technology with handheld control apparatus |
DE10330329A1 (de) * | 2003-07-04 | 2005-02-17 | Micronas Gmbh | Verfahren zur Darstellung von Teletextseiten auf einer Anzeigevorrichtung |
TWI248762B (en) * | 2004-11-10 | 2006-02-01 | Realtek Semiconductor Corp | Video processing device and method thereof |
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- 1997-04-10 JP JP53693797A patent/JP4642161B2/ja not_active Expired - Lifetime
- 1997-04-10 KR KR1019970709319A patent/KR100666285B1/ko not_active Expired - Lifetime
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JPH0686250A (ja) * | 1992-09-02 | 1994-03-25 | Nec Corp | Tv信号伝送装置 |
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JP4642161B2 (ja) | 2011-03-02 |
WO1997039578A1 (en) | 1997-10-23 |
KR19990022850A (ko) | 1999-03-25 |
ES2247626T3 (es) | 2006-03-01 |
US6067653A (en) | 2000-05-23 |
DE69734496T2 (de) | 2006-08-03 |
DE69734496D1 (de) | 2005-12-08 |
EP0833508A4 (en) | 1999-12-08 |
EP0833508A1 (en) | 1998-04-01 |
EP0833508B1 (en) | 2005-11-02 |
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