KR940023243A - 전송장치 - Google Patents

전송장치 Download PDF

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Publication number
KR940023243A
KR940023243A KR1019940006012A KR19940006012A KR940023243A KR 940023243 A KR940023243 A KR 940023243A KR 1019940006012 A KR1019940006012 A KR 1019940006012A KR 19940006012 A KR19940006012 A KR 19940006012A KR 940023243 A KR940023243 A KR 940023243A
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South Korea
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signal
error correction
transmission
data string
image
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KR1019940006012A
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KR0161051B1 (ko
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미쯔아키 오오시마
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모리시타 요이찌
마쯔시다덴기산교 가부시기가이샤
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/183—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2604—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3488—Multiresolution systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
    • H04N21/64784—Data processing by the network
    • H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Error Detection And Correction (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Transmitters (AREA)

Abstract

본 발명은 디지틀신호를 전송하는 전송장치에 있어서 주파수대가 제한되어 있는 경우에 전송정보량을 중대할 수 없는 것을 해결하고 동일 주파수대에서 보다 많은 정보를 전송하는 송수신시스템을 제공하는 것을 목적으로 하고, 그 구성에 있어서, 송신기(1)에서는 m치의 QAM변조를 행하는 변조기(4)에 의해 n치의 제1데이터열과, p치의 제2데이터열과 제3데이터열을 신호스페이스다이어그램상의 신호점을 그룹화한 신호점군에 제1데이터열의 n치의 데이터를 할당해서 변형 m치의 QAM변조신호를 송신한다. 제1수신기(23)에서는 복조기(25)에 의해 n치의 제1데이터열을 제2수신기(33)에서는 제1데이터열과 제2데이터열을 제3수신기(43)에서는 제1데이터열, 제2데이터열, 제3데이터열을 복조함으로써, m치의 변형다치변조파를 수신한 경우 n＜m인 n치의 복조능력밖에 없는 수신기에서도 n치의 제1데이터열의 데이터를 복조하는 전송장치를 얻을 수 있는 것이다.

Description

전송장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예에 있어서의 전송장치의 시스템전체를 표시한 구성도.

Claims (5)

  1. 화상신호의 입력수단과 상기 화상신호를 디지틀화상압축신호로 압축하는 화상압축수단과, 상기 디지틀화상압축신호에 착오정정부호를 인가하고, 착오정정부호화신호를 만드는 착오정정인코우더와, 상기 착오정정부호화신호를 n치의 VSB변조신호로 변조하는 변조수단과, 상기 변조신호를 송신하는 송신수단을 가진 송신기에 의해 송신신호를 보내고, 상기 송신신호를 수신하는 수단과, 상기 송신신호를 수신디지틀신호로 복조하는 복조수단과, 상기 수신디지틀신호를 착오정정된 디지틀신호로 착오정정하는 착오정정수단과, 상기 착오정정된 디지틀신호를 영상출력신호로 신장하는 화상신장부와, 상기 영상출력신호를 출력하는 출력수단을 가진 수신기에 의해 화상신호를 전송하는 장치로서, 8치의 VSB신호를 송신 또는 수신하는 것을 특징으로 하는 전송장치.
  2. 제1항에 있어서, 상기 착오정정수단으로서 트렐리스디코우더를 사용한 것을 특징으로 하는 전송장치.
  3. 제1항에 있어서, 수신디지틀신호를 고순위신호와 저순위신호로 분할하는 동시에 착오정정수단중에 고코우드게인의 제1착오정정수단과, 저코우드게인의 제2착오정정수단의 2개를 설치하고, 상기 고순위신호를 제1착오정정수단에서 정정하는 것을 특징으로 하는 전송장치.
  4. 제3항에 있어서, 고순위신호로서, 각 데이터의 어드레스정보를 포함하는 것을 특징으로 하는 전송장치.
  5. 제3항에 있어서, 제1착오정정수단에 트렐리스디코우더를 사용한 것을 특징으로 하는 전송장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940006012A 1993-03-25 1994-03-25 디지틀 tv 전송장치 KR0161051B1 (ko)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP93-66461 1993-03-25
JP6646193 1993-03-25
JP93-132984 1993-05-10
JP13298493 1993-05-10
JP93-261612 1993-09-24
JP26161293 1993-09-24
JP34997293 1993-12-27
JP93-349972 1993-12-27

Publications (2)

Publication Number Publication Date
KR940023243A true KR940023243A (ko) 1994-10-22
KR0161051B1 KR0161051B1 (ko) 1999-01-15

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KR1019940006012A KR0161051B1 (ko) 1993-03-25 1994-03-25 디지틀 tv 전송장치

Country Status (6)

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JP (9) JP3248807B2 (ko)
KR (1) KR0161051B1 (ko)
AU (1) AU660123B2 (ko)
CA (1) CA2119983C (ko)
MX (4) MXPA00004081A (ko)
MY (1) MY113937A (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100386572B1 (ko) * 1999-12-24 2003-06-02 엘지전자 주식회사 디지털 티브이 중계 시스템

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US5802241A (en) 1992-03-26 1998-09-01 Matsushita Electric Industrial Co., Ltd. Communication system
USRE38513E1 (en) 1992-03-26 2004-05-11 Matsushita Electric Industrial Co., Ltd. Communication system
US6889351B1 (en) * 2000-03-30 2005-05-03 Koninklijke Philips Electronics, N.V. Backward compatible multiple data stream transmission method and system for compressed domain signals
MXPA03005307A (es) 2000-12-15 2004-12-02 Adaptix Inc Comunicaciones de multiportadores con asignacion de subportadora con base en grupos.
US6947748B2 (en) 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
JP4256158B2 (ja) 2002-12-26 2009-04-22 パナソニック株式会社 無線通信装置及び無線通信方法
US7573851B2 (en) 2004-12-07 2009-08-11 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks
JP4871760B2 (ja) 2007-02-28 2012-02-08 日立建機株式会社 油圧駆動車両の原動機回転数制御装置
KR101355633B1 (ko) * 2007-11-06 2014-01-29 삼성전자주식회사 인코더 및 인코딩 방법
JP4734314B2 (ja) * 2007-12-10 2011-07-27 パナソニック株式会社 無線通信装置及び無線通信方法
JP6089222B2 (ja) * 2012-09-19 2017-03-08 パナソニックＩｐマネジメント株式会社 冷蔵庫

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GB2181027A (en) * 1985-09-24 1987-04-08 Stc Plc Digital to vestigial sideband conversion
US5176712A (en) * 1988-04-12 1993-01-05 Tranquil Prospects Ltd. Endoprostheses with resorption preventing means
JP2512130B2 (ja) * 1989-01-24 1996-07-03 三菱電機株式会社 誤り訂正連接符号化装置および誤り訂正連接符号復号化装置
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JP3117706B2 (ja) * 1990-11-28 2000-12-18 日本放送協会 データインタリーブ方式および回路
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JP3241098B2 (ja) * 1992-06-12 2001-12-25 株式会社東芝 多方式対応の受信装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100386572B1 (ko) * 1999-12-24 2003-06-02 엘지전자 주식회사 디지털 티브이 중계 시스템

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MXPA00004081A (es) 2005-09-27
JP3248807B2 (ja) 2002-01-21
KR0161051B1 (ko) 1999-01-15
CA2119983C (en) 1999-05-11
JP2003158501A (ja) 2003-05-30
JP3410085B2 (ja) 2003-05-26
JP3588463B2 (ja) 2004-11-10
JP2004032747A (ja) 2004-01-29
JP2004343789A (ja) 2004-12-02
MXPA00007354A (es) 2005-08-26
JP3327915B2 (ja) 2002-09-24
JPH07322219A (ja) 1995-12-08
AU5905294A (en) 1994-10-20
CA2119983A1 (en) 1994-09-26
JP3327916B2 (ja) 2002-09-24
MXPA00004076A (es) 2005-09-27
MY113937A (en) 2002-06-29
AU660123B2 (en) 1995-06-08
MXPA03010764A (es) 2009-01-14
JP2007049723A (ja) 2007-02-22
JP2002190842A (ja) 2002-07-05
JP2002198928A (ja) 2002-07-12
JP3881679B2 (ja) 2007-02-14
JP3450321B2 (ja) 2003-09-22
JP3327914B2 (ja) 2002-09-24
JP2002190843A (ja) 2002-07-05
JP2002208906A (ja) 2002-07-26

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