[특허]Method for digital transmission of hierarchical HDTV, EDTV and SDTV television signals

Method for digital transmission of hierarchical HDTV, EDTV and SDTV television signals 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04N-011/06 H04N-011/04
출원번호	US-0158436 (1993-11-29)
우선권정보	DE-4240226 (1992-11-30)
발명자 / 주소	Fazel Khaled (WeBling DEX) Ruf Michael (Mnchen DEX)
출원인 / 주소	Deutsche Forschungsansalt fur Luft-und Raumfahrt e.V. (Kln DEX 03)
인용정보	피인용 횟수 : 42 인용 특허 : 0

초록 ▼

For digital transmission of hierarchical HDTV, EDTV and SDTV television signals, on the transmission side after an analog/digital conversion of video and audio input signals and a subsequent removal of redundancy in a source coder, the signal bits are protected in a UEP coder in accordance with their significance. Thereafter, the hierarchically built up television signals (HDTV, EDTV and SDTV) are subjected to a multilevel coding and, combined to form symbols, to a multiresolution modulation and an OFD multiplexing and transmitted after digital/analog conversion. On the receiving side the transmitted signals, after analog/digital reconversion and inverse OED multiplexing (OFDM), are demodulated in a multiresolution demodulator and then decoded in a multistage decoder. Thereupon the data are processed by digital/analog conversion to HDTV, EDTV and SDTV signals in a UEP decoder specific to the respective receiver and a following source decoder.

대표청구항 ▼

A method for hierarchical transmission of television signals, the television signals being analog signals and selectively including at least two of HDTV signals, EDTV signals, and SDTV signals, the television signals moving from a transmission side to a receiving side, the method comprising, on the transmission side: converting the television signals to digital signals, such that the digital signals include signal bits; removing signal bit redundancy from the digital signals in a source coder; protecting the signal bits in accordance with their significance in a UEP coder, whereby the digital signals are hierarchically built up; multilevel encoding the digital signals to form symbols; multiresolution modulating the digital signals; OFD multiplexing the digital signals; converting the digital signals to analog signals; and transmitting the analog signals; the method further comprising, on the receiving side: re-converting the analog signals to the digital signals; inverse OFD multiplexing the digital signals; demodulating the digital signals in a multiresolution demodulator according to a channel estimation, the multiresolution demodulator including various differently complex receivers selectively for the HDTV signals, the EDTV signals, and the SDTV signals; decoding the digital signals in a multistage decoder; processing the HDTV signals, the EDTV signals, and the SDTV signals by a digital-to-analog conversion in a UEP decoder specific to a respective one of the differently complex receivers and a following source decoder.

이 특허를 인용한 특허 (42)

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Paranjpe,Milind D.; Hart,Brian; Pignatelli,David J.; Ayanoglu,Ender; Perahia,Eldad; Ryan,Philip J.; Douglas,Bretton Lee; Parker,Uri, Decoding method and apparatus using channel state information for use in a wireless network receiver.
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Eroz, Mustafa; Sun, Feng-Wen; Lee, Lin-Nan, Method and system for decoding low density parity check (LDPC) codes.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Method for digital transmission of hierarchical HDTV, EDTV and SDTV television signals 원문보기

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Method for digital transmission of hierarchical HDTV, EDTV and SDTV television signals 원문보기

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