DE69123948T2 - Kodierung für digitale Übertragung - Google Patents

Kodierung für digitale Übertragung

Info

Publication number
DE69123948T2
DE69123948T2 DE69123948T DE69123948T DE69123948T2 DE 69123948 T2 DE69123948 T2 DE 69123948T2 DE 69123948 T DE69123948 T DE 69123948T DE 69123948 T DE69123948 T DE 69123948T DE 69123948 T2 DE69123948 T2 DE 69123948T2
Authority
DE
Germany
Prior art keywords
coding
digital transmission
digital
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69123948T
Other languages
English (en)
Other versions
DE69123948D1 (de
Inventor
Victor Bernard Lawrence
Arun Narayan Netravali
Jean-Jacques Werner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp filed Critical AT&T Corp
Publication of DE69123948D1 publication Critical patent/DE69123948D1/de
Application granted granted Critical
Publication of DE69123948T2 publication Critical patent/DE69123948T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • 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
    • 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
    • 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
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Error Detection And Correction (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69123948T 1990-11-07 1991-10-30 Kodierung für digitale Übertragung Expired - Lifetime DE69123948T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/611,225 US5164963A (en) 1990-11-07 1990-11-07 Coding for digital transmission

Publications (2)

Publication Number Publication Date
DE69123948D1 DE69123948D1 (de) 1997-02-13
DE69123948T2 true DE69123948T2 (de) 1997-04-30

Family

ID=24448144

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69123948T Expired - Lifetime DE69123948T2 (de) 1990-11-07 1991-10-30 Kodierung für digitale Übertragung

Country Status (7)

Country Link
US (2) US5164963A (de)
EP (1) EP0485105B1 (de)
JP (1) JP2665092B2 (de)
KR (1) KR950011198B1 (de)
DE (1) DE69123948T2 (de)
HK (1) HK42697A (de)
SG (1) SG43761A1 (de)

Families Citing this family (101)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285276A (en) * 1991-03-12 1994-02-08 Zenith Electronics Corp. Bi-rate high definition television signal transmission system
US5600672A (en) 1991-03-27 1997-02-04 Matsushita Electric Industrial Co., Ltd. Communication system
USRE42643E1 (en) 1991-03-27 2011-08-23 Panasonic Corporation Communication system
USRE40241E1 (en) 1991-03-27 2008-04-15 Matsushita Electric Industrial Co., Ltd. Communication system
EP0766478B1 (de) * 1991-03-27 2002-03-27 Matsushita Electric Industrial Co., Ltd. Signalübertragungssystem
USRE39890E1 (en) 1991-03-27 2007-10-23 Matsushita Electric Industrial Co., Ltd. Communication system
US6091884A (en) * 1991-08-19 2000-07-18 Index Systems, Inc. Enhancing operations of video tape cassette players
US6487362B1 (en) 1991-08-19 2002-11-26 Index Systems, Inc. Enhancing operations of video tape cassette players
DE4135070C1 (de) * 1991-10-24 1993-05-19 Institut Fuer Rundfunktechnik Gmbh, 8000 Muenchen, De
US5305352A (en) * 1991-10-31 1994-04-19 At&T Bell Laboratories Coded modulation with unequal error protection
US5544328A (en) * 1991-10-31 1996-08-06 At&T Bell Laboratories Coded modulation with unequal error protection
US5243419A (en) * 1991-10-31 1993-09-07 At&T Bell Laboratories Soft coding for HDTV
US5289501A (en) * 1991-11-26 1994-02-22 At&T Bell Laboratories Coded modulation with unequal error protection for fading channels
DE69332849T2 (de) 1992-01-14 2003-12-18 Fujitsu Ltd Gleichzeitige Übertragung von Daten und analogen Sprachbandsignalen
US7302007B1 (en) 1992-03-26 2007-11-27 Matsushita Electric Industrial Co., Ltd. Communication system
US6724976B2 (en) * 1992-03-26 2004-04-20 Matsushita Electric Industrial Co., Ltd. Communication system
US5892879A (en) * 1992-03-26 1999-04-06 Matsushita Electric Industrial Co., Ltd. Communication system for plural data streams
USRE38513E1 (en) 1992-03-26 2004-05-11 Matsushita Electric Industrial Co., Ltd. Communication system
US5802241A (en) 1992-03-26 1998-09-01 Matsushita Electric Industrial Co., Ltd. Communication system
US6728467B2 (en) 1992-03-26 2004-04-27 Matsushita Electric Industrial Co., Ltd. Communication system
CN1032099C (zh) * 1992-03-26 1996-06-19 松下电器产业株式会社 通信系统
US7894541B2 (en) * 1992-03-26 2011-02-22 Panasonic Corporation Communication system
US5282226A (en) * 1992-04-27 1994-01-25 Hughes Aircraft Company System and method for transmission of bursts of digital information
US5311553A (en) * 1992-06-15 1994-05-10 General Electric Company Trellis coding technique to increase adjacent channel interference protection ratio in land mobile radio systems under peak power constraints
US5311552A (en) * 1992-06-15 1994-05-10 General Electric Company Trellis coding technique to improve adjacent channel interference protection ratio in land mobile radio systems
US5289276A (en) * 1992-06-19 1994-02-22 General Electric Company Method and apparatus for conveying compressed video data over a noisy communication channel
US5331348A (en) * 1992-07-27 1994-07-19 At&T Bell Laboratories Adaptive leak HDTV encoder
US5438369A (en) * 1992-08-17 1995-08-01 Zenith Electronics Corporation Digital data interleaving system with improved error correctability for vertically correlated interference
PT1035694E (pt) * 1992-09-25 2003-03-31 Matsushita Electric Ind Co Ltd Transmissao com multirresolucao em particular com sistemas de portadoras multiplas
FR2697395B1 (fr) * 1992-10-22 1994-12-30 France Telecom Procédé de codage-décodage hiérarchique d'un signal numérique, et système correspondant utilisés en télévision numérique.
US5363141A (en) * 1993-01-29 1994-11-08 At&T Bell Laboratories Method and apparatus for transmitting encoded blocks of video signals at different channel rates
EP0616454A1 (de) * 1993-03-17 1994-09-21 Laboratoires D'electronique Philips S.A.S. Digitales Übertragungssystem mit mehrfacher Auflösung
EP0617531A1 (de) * 1993-03-25 1994-09-28 Matsushita Electric Industrial Co., Ltd. Mehrfachauflösungsübertragungssystem
US5565926A (en) * 1993-05-07 1996-10-15 Philips Electronics North America Corporation Method and apparatus for communicating digital television signals using a signal constellation formed by four signal constellations placed in the quadrants
JPH0775099A (ja) * 1993-05-07 1995-03-17 Philips Electron Nv マルチプレックス直交振幅変調テレビジョン送信用送信方式、送信機及び受信機
KR950002458A (ko) * 1993-06-02 1995-01-04 이헌조 영상신호의 압축/신장 장치
US5440585A (en) * 1993-06-14 1995-08-08 At&T Corp. Applications of simultaneous analog and digital communication
FR2707130A1 (fr) * 1993-06-30 1995-01-06 Philips Laboratoire Electroniq Système de réception et de décodage de signaux numériques selon deux niveaux de définition d'image.
US5376969A (en) * 1993-11-15 1994-12-27 Rca Thomson Licensing Corporation Method and apparatus for conveying compressed video data over a noisy communication channel
US5452009A (en) * 1993-12-29 1995-09-19 Zenith Electronics Corp. Digital transmission system with data rate optimized for noise in transmission medium
TW249873B (en) * 1994-03-21 1995-06-21 At & T Corp Time division multiplexing data communication arrangement with different signal constellation
US5398073A (en) * 1994-04-12 1995-03-14 At&T Corp. Concatenated coded vestigial sideband modulation for high definition television
US5465273A (en) * 1994-04-20 1995-11-07 General Datacomm, Inc. Modem utilizing parity and convolutional encoder feedback
US5583889A (en) * 1994-07-08 1996-12-10 Zenith Electronics Corporation Trellis coded modulation system for HDTV
US5617541A (en) * 1994-12-21 1997-04-01 International Computer Science Institute System for packetizing data encoded corresponding to priority levels where reconstructed data corresponds to fractionalized priority level and received fractionalized packets
US5570391A (en) * 1995-03-06 1996-10-29 Chung-Chin Chen Trellis coding method using a multilevel delay device
JP3170193B2 (ja) * 1995-03-16 2001-05-28 松下電器産業株式会社 画像信号の符号化装置及び復号装置
US5621762A (en) * 1995-06-12 1997-04-15 Motorola, Inc. Radio with peak power and bandwidth efficient modulation
US6049572A (en) * 1996-12-30 2000-04-11 Intel Corporation Optimization of QAM constellation space for auxiliary I-Q signaling
US6043844A (en) * 1997-02-18 2000-03-28 Conexant Systems, Inc. Perceptually motivated trellis based rate control method and apparatus for low bit rate video coding
US6549242B1 (en) * 1997-04-04 2003-04-15 Harris Corporation Combining adjacent TV channels for transmission by a common antenna
US6167085A (en) * 1997-07-31 2000-12-26 Sony Corporation Image data compression
US6031874A (en) * 1997-09-26 2000-02-29 Ericsson Inc. Unequal error protection in coded modulation schemes
US7068729B2 (en) 2001-12-21 2006-06-27 Digital Fountain, Inc. Multi-stage code generator and decoder for communication systems
US6307487B1 (en) 1998-09-23 2001-10-23 Digital Fountain, Inc. Information additive code generator and decoder for communication systems
US6603809B1 (en) * 1999-12-29 2003-08-05 Nokia Corporation Apparatus, and associated method, for forming a signal for communication upon a fading channel
JP3506330B2 (ja) 2000-12-27 2004-03-15 松下電器産業株式会社 データ送信装置
EP1293059B1 (de) * 2001-02-21 2004-03-10 Matsushita Electric Industrial Co., Ltd. Hybrides arq-verfahren mit neuanordnung der signalkonstellation
US7693179B2 (en) * 2002-11-29 2010-04-06 Panasonic Corporation Data transmission apparatus using a constellation rearrangement
US20060203927A1 (en) 2001-03-27 2006-09-14 Aware, Inc. Systems and methods for implementing receiver transparent Q-mode
KR100539862B1 (ko) 2001-04-04 2005-12-28 삼성전자주식회사 부호분할다중접속 이동통신시스템에서 데이타 송/수신장치및 방법
WO2002102007A1 (en) * 2001-06-09 2002-12-19 Samsung Electronics Co., Ltd Method and apparatus for rearranging codeword sequence in a communication system
DE60114849T2 (de) * 2001-11-16 2006-04-20 Matsushita Electric Industrial Co., Ltd., Kadoma ARQ Sendewiederholung mit Anforderungswiederholungs-Schema das mehrere Redundanz-Versionen verwendet und Empfänger/Sender dafür
EP1313248B1 (de) 2001-11-16 2005-08-31 Matsushita Electric Industrial Co., Ltd. Hybrides ARQ Verfahren zur Datenpaketübertragung
KR20030049302A (ko) * 2001-12-14 2003-06-25 한국전자통신연구원 디지털 방송 시스템에서의 기저대역 부호화 장치 및 그를이용한 주파수 변조 방법
JP3815344B2 (ja) * 2002-02-21 2006-08-30 株式会社日立製作所 多値変調に適した符号語マッピング方法
US7230993B2 (en) 2002-03-06 2007-06-12 Nokia Corporation Method and apparatus for modulation using an at least four-dimensional signal constellation
US9240810B2 (en) 2002-06-11 2016-01-19 Digital Fountain, Inc. Systems and processes for decoding chain reaction codes through inactivation
EP2355360B1 (de) 2002-10-05 2020-08-05 QUALCOMM Incorporated Systematische kodierung und dekodierung von kettenreaktionskoden
EP2722995B1 (de) 2003-10-06 2023-04-19 QUALCOMM Incorporated Soft-Dekodierung von Multi-Stage Chain Reaction Kodes
EP1706946A4 (de) * 2003-12-01 2006-10-18 Digital Fountain Inc Schutz von daten vor löschungen durch verwendung von codes auf subsymbol-basis
WO2005112250A2 (en) 2004-05-07 2005-11-24 Digital Fountain, Inc. File download and streaming system
KR100714973B1 (ko) * 2004-08-16 2007-05-04 삼성전자주식회사 하이브리드 자동재전송요구 시스템에서 신호점 사상규칙을변경하기 위한 장치 및 방법
US7900124B2 (en) * 2004-11-08 2011-03-01 Koninklijke Philips Electronics N.V. Bit detection for multitrack digital data storage
KR101292851B1 (ko) 2006-02-13 2013-08-02 디지털 파운튼, 인크. 가변적 ｆｅｃ 오버헤드 및 보호 구간을 이용하는 스트리밍및 버퍼링
US9270414B2 (en) 2006-02-21 2016-02-23 Digital Fountain, Inc. Multiple-field based code generator and decoder for communications systems
WO2007100184A1 (en) * 2006-02-28 2007-09-07 Lg Electronics Inc. Digital broadcasting system and method of processing data
US7971129B2 (en) 2006-05-10 2011-06-28 Digital Fountain, Inc. Code generator and decoder for communications systems operating using hybrid codes to allow for multiple efficient users of the communications systems
US9178535B2 (en) 2006-06-09 2015-11-03 Digital Fountain, Inc. Dynamic stream interleaving and sub-stream based delivery
US9209934B2 (en) 2006-06-09 2015-12-08 Qualcomm Incorporated Enhanced block-request streaming using cooperative parallel HTTP and forward error correction
US9386064B2 (en) 2006-06-09 2016-07-05 Qualcomm Incorporated Enhanced block-request streaming using URL templates and construction rules
US9380096B2 (en) 2006-06-09 2016-06-28 Qualcomm Incorporated Enhanced block-request streaming system for handling low-latency streaming
US9419749B2 (en) 2009-08-19 2016-08-16 Qualcomm Incorporated Methods and apparatus employing FEC codes with permanent inactivation of symbols for encoding and decoding processes
US9432433B2 (en) 2006-06-09 2016-08-30 Qualcomm Incorporated Enhanced block-request streaming system using signaling or block creation
US20080205229A1 (en) * 2007-02-26 2008-08-28 Yung-Chih Li Method of identifying optical disc
RU2010114256A (ru) 2007-09-12 2011-10-20 Диджитал Фаунтин, Инк. (Us) Формирование и передача исходной идентификационной информации для обеспечения надежного обмена данными
US9281847B2 (en) 2009-02-27 2016-03-08 Qualcomm Incorporated Mobile reception of digital video broadcasting—terrestrial services
US9288010B2 (en) 2009-08-19 2016-03-15 Qualcomm Incorporated Universal file delivery methods for providing unequal error protection and bundled file delivery services
US9917874B2 (en) 2009-09-22 2018-03-13 Qualcomm Incorporated Enhanced block-request streaming using block partitioning or request controls for improved client-side handling
US20110280311A1 (en) 2010-05-13 2011-11-17 Qualcomm Incorporated One-stream coding for asymmetric stereo video
US9596447B2 (en) 2010-07-21 2017-03-14 Qualcomm Incorporated Providing frame packing type information for video coding
US9456015B2 (en) 2010-08-10 2016-09-27 Qualcomm Incorporated Representation groups for network streaming of coded multimedia data
US8958375B2 (en) 2011-02-11 2015-02-17 Qualcomm Incorporated Framing for an improved radio link protocol including FEC
US9270299B2 (en) 2011-02-11 2016-02-23 Qualcomm Incorporated Encoding and decoding using elastic codes with flexible source block mapping
CN102131104A (zh) * 2011-03-22 2011-07-20 中广传播集团有限公司 加扰业务的方法
US9253233B2 (en) 2011-08-31 2016-02-02 Qualcomm Incorporated Switch signaling methods providing improved switching between representations for adaptive HTTP streaming
US9843844B2 (en) 2011-10-05 2017-12-12 Qualcomm Incorporated Network streaming of media data
US9047203B1 (en) * 2011-12-21 2015-06-02 Altera Corporation Systems and methods for encoding and decoding data
US9294226B2 (en) 2012-03-26 2016-03-22 Qualcomm Incorporated Universal object delivery and template-based file delivery
KR20140048004A (ko) * 2012-10-15 2014-04-23 콘티넨탈 오토모티브 시스템 주식회사 하이브리드 차량의 변속 제어 장치 및 방법
US10153935B2 (en) * 2016-07-18 2018-12-11 Intel Corporation Apparatus, system and method of communicating a transmission according to a rotated 256 quadrature amplitude modulation (QAM) scheme

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909721A (en) * 1972-01-31 1975-09-30 Signatron Signal processing system
US4015222A (en) 1975-12-01 1977-03-29 Bell Telephone Laboratories, Incorporated Modulated passband signal generator
US4247940A (en) 1979-10-15 1981-01-27 Bell Telephone Laboratories, Incorporated Equalizer for complex data signals
US4346473A (en) * 1980-02-26 1982-08-24 Harris Corporation Error correction coding method and apparatus for multilevel signaling
US4457004A (en) 1982-02-08 1984-06-26 Bell Telephone Laboratories, Incorporated Multidimensional channel coding
US4597090A (en) 1983-04-14 1986-06-24 Codex Corporation Block coded modulation system
US4489418A (en) 1983-04-18 1984-12-18 At&T Bell Laboratories Differential encoding technique
US4520490A (en) 1983-08-05 1985-05-28 At&T Information Systems Inc. Differentially nonlinear convolutional channel coding with expanded set of signalling alphabets
US4644537A (en) * 1984-12-24 1987-02-17 American Telephone And Telegraph Company Inband coding of secondary data
US4651320A (en) * 1984-12-24 1987-03-17 American Telephone And Telegraph Company Inband coding of secondary data
US4823346A (en) * 1986-04-16 1989-04-18 Hitachi, Ltd. Maximum likelihood decoder
AU621536B2 (en) * 1987-02-24 1992-03-19 General Electric Capital Corporation Partial response channel signaling systems
US4882733A (en) 1987-03-13 1989-11-21 Ford Aerospace Corporation Method and apparatus for combining encoding and modulation
CA1274929A (en) * 1987-08-06 1990-10-02 John Duncan Mcnicol Method of communicating stuffing indications in a multi-level communications system
US4891806A (en) * 1987-09-18 1990-01-02 Racal Data Communications Inc. Constellation multiplexed inband secondary channel for voiceband modem
US4924492A (en) * 1988-03-22 1990-05-08 American Telephone And Telegraph Company Method and apparatus for wideband transmission of digital signals between, for example, a telephone central office and customer premises
US4980897A (en) * 1988-08-12 1990-12-25 Telebit Corporation Multi-channel trellis encoder/decoder
US4901331A (en) * 1989-05-19 1990-02-13 American Telephone And Telegraph Company Trellis codes with passband spectral nulls
US5128758A (en) * 1989-06-02 1992-07-07 North American Philips Corporation Method and apparatus for digitally processing a high definition television augmentation signal
US5140417A (en) * 1989-06-20 1992-08-18 Matsushita Electric Co., Ltd. Fast packet transmission system of video data
GB8929152D0 (en) * 1989-12-22 1990-02-28 Gen Electric A digital augmentation system for actv-ii
US5148274A (en) * 1990-03-19 1992-09-15 At&T Bell Laboratories PAM signals modulation with mappings to improve utilization of available transmission capacity
US5159453A (en) * 1990-09-07 1992-10-27 New York Institute Of Technology Video processing method and apparatus

Also Published As

Publication number Publication date
HK42697A (en) 1997-04-11
JPH04313983A (ja) 1992-11-05
EP0485105A2 (de) 1992-05-13
KR920011270A (ko) 1992-06-27
JP2665092B2 (ja) 1997-10-22
EP0485105B1 (de) 1997-01-02
DE69123948D1 (de) 1997-02-13
US5164963A (en) 1992-11-17
SG43761A1 (en) 1997-11-14
KR950011198B1 (ko) 1995-09-29
US5524025A (en) 1996-06-04
EP0485105A3 (en) 1992-09-30

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