CA2270994C - Mise en oeuvre de l'egaliseur canal dans un recepteur destine a des signaux de television numerique sujet a interference co-canal ntsc - Google Patents

Mise en oeuvre de l'egaliseur canal dans un recepteur destine a des signaux de television numerique sujet a interference co-canal ntsc Download PDF

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Publication number
CA2270994C
CA2270994C CA002270994A CA2270994A CA2270994C CA 2270994 C CA2270994 C CA 2270994C CA 002270994 A CA002270994 A CA 002270994A CA 2270994 A CA2270994 A CA 2270994A CA 2270994 C CA2270994 C CA 2270994C
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CA
Canada
Prior art keywords
channel
signal
filter
interference
comb
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 - Fee Related
Application number
CA002270994A
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English (en)
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CA2270994A1 (fr
Inventor
Allen Leroy Limberg
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of CA2270994A1 publication Critical patent/CA2270994A1/fr
Application granted granted Critical
Publication of CA2270994C publication Critical patent/CA2270994C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
    • H04L25/03133—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a non-recursive structure
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03382—Single of vestigal sideband
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Picture Signal Circuits (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

Un récepteur de signaux de télévision numérique compote un filtre adaptatif d'égalisation canal, un filtre en peigne (20) pour supprimer les artefacts de l'interférence co-canal NTSC, et un filtre d'arrêt (26) des interférences intersymbole corrigeant l'interférence intersymbole introduite par le filtre en peigne (20). L'adaptation des coefficients du filtre d'égalisation se fait de façon à être intense en présence ou en absence des artefacts de l'interférence co-canal NTSC. Cela évite que le filtre d'égalisation canal essaie de corriger l'interférence intersymbole introduite par le filtre en peigne, laquelle correction ne peut pas se faire complètement et rendrait imprévisible l'interférence intersymbole dans le filtre en peigne (20). L'adaptation des coefficients du filtre d'égalisation se fait de façon à ne pas affecter l'interférence intersymbole introduite par le filtre en peigne (20). De la sorte, il est possible de corriger correctement l'interférence intersymbole au moyen du filtre d'arrêt (26) des interférences intersymbole.
CA002270994A 1997-09-19 1998-09-18 Mise en oeuvre de l'egaliseur canal dans un recepteur destine a des signaux de television numerique sujet a interference co-canal ntsc Expired - Fee Related CA2270994C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US93393497A 1997-09-19 1997-09-19
US08/933,934 1997-09-19
US93774097A 1997-09-25 1997-09-25
US08/937,740 1997-09-25
PCT/KR1998/000286 WO1999016240A1 (fr) 1997-09-19 1998-09-18 Mise en oeuvre de l'egaliseur canal dans un recepteur destine a des signaux de television numerique sujet a interference co-canal ntsc

Publications (2)

Publication Number Publication Date
CA2270994A1 CA2270994A1 (fr) 1999-04-01
CA2270994C true CA2270994C (fr) 2002-06-04

Family

ID=27130052

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002247555A Expired - Fee Related CA2247555C (fr) 1997-09-19 1998-09-16 Detecteurs de brouillage ntsc utilisant des filtres en peigne qui suppriment la porteuse pilote dtv afin d'extraire les artefacts ntsc
CA002270994A Expired - Fee Related CA2270994C (fr) 1997-09-19 1998-09-18 Mise en oeuvre de l'egaliseur canal dans un recepteur destine a des signaux de television numerique sujet a interference co-canal ntsc

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002247555A Expired - Fee Related CA2247555C (fr) 1997-09-19 1998-09-16 Detecteurs de brouillage ntsc utilisant des filtres en peigne qui suppriment la porteuse pilote dtv afin d'extraire les artefacts ntsc

Country Status (8)

Country Link
JP (2) JP2000506716A (fr)
KR (2) KR100557122B1 (fr)
CN (2) CN1128550C (fr)
AU (1) AU703907B1 (fr)
BR (1) BR9803498A (fr)
CA (2) CA2247555C (fr)
SG (1) SG68079A1 (fr)
WO (1) WO1999016240A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1089427B1 (fr) * 1999-09-28 2007-07-18 Koninklijke Philips Electronics N.V. Procédé de comparaison des amplitudes de deux signaux électriques
US6449002B1 (en) * 1999-12-21 2002-09-10 Thomson Licensing S.A. Truncated metric for NTSC interference rejection in the ATSC-HDTV trellis decoder
KR100705931B1 (ko) * 2000-12-08 2007-04-11 엘지전자 주식회사 Ｖｓｂ 수신기의 복소수 적응 채널 등화장치
CN100373372C (zh) * 2002-09-17 2008-03-05 联发科技股份有限公司 自动功率控制回路的误差校正系统和方法
CN100361511C (zh) * 2002-11-26 2008-01-09 汤姆森许可贸易公司 Ntsc信号检测器
KR100594275B1 (ko) * 2004-05-14 2006-06-30 삼성전자주식회사 Ｎｔｓｃ 코채널 간섭 제거를 위한 채널 상태 생성 회로를구비한 디지털 텔레비전 수신기 및 그 방법
KR100608000B1 (ko) 2004-08-16 2006-08-02 삼성전자주식회사 냉각팬을 구비하는 감열방식 화상형성장치
US7613238B2 (en) * 2005-09-13 2009-11-03 Mediatek Inc. Apparatus and method for decision error compensation in an adaptive equalizer
US7668209B2 (en) 2005-10-05 2010-02-23 Lg Electronics Inc. Method of processing traffic information and digital broadcast system
CN101944964B (zh) * 2005-10-17 2012-10-31 Lg电子株式会社 处理交通信息的方法和数字广播系统
US8238450B2 (en) * 2009-01-30 2012-08-07 Futurewei Technologies Inc. Dynamic transmitter noise level adjustment for digital subscriber line systems
CN109716664B (zh) * 2016-10-10 2020-06-16 华为技术有限公司 梳状滤波噪声消除方法、装置及频域自适应均衡装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5602602A (en) * 1994-02-10 1997-02-11 Philips Electronics North America Corporation Method and apparatus for combating co-channel NTSC interference for digital TV transmission having a simplified rejection filter
US5546132A (en) * 1994-12-07 1996-08-13 Goldstar Co., Ltd. NTSC interference detector
US5648822A (en) * 1995-05-19 1997-07-15 Philips Electronics North America Corporation Method and apparatus for combating co-channel NTSC interference using a variable-comb filter for digital TV transmission
US5594496A (en) * 1995-06-07 1997-01-14 Zenith Electronics Corporation Detection of co-channel interference in digital television signals

Also Published As

Publication number Publication date
AU703907B1 (en) 1999-04-01
KR100557122B1 (ko) 2006-03-03
SG68079A1 (en) 1999-10-19
CA2247555C (fr) 2001-12-11
CN1212581A (zh) 1999-03-31
WO1999016240A1 (fr) 1999-04-01
CA2247555A1 (fr) 1999-03-19
JP2000506716A (ja) 2000-05-30
BR9803498A (pt) 1999-11-03
JPH11164222A (ja) 1999-06-18
CN1122401C (zh) 2003-09-24
CN1128550C (zh) 2003-11-19
JP3272678B2 (ja) 2002-04-08
KR100278854B1 (ko) 2001-01-15
CN1239625A (zh) 1999-12-22
KR20000069033A (ko) 2000-11-25
CA2270994A1 (fr) 1999-04-01
KR19990029972A (ko) 1999-04-26

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Effective date: 20100920