CA2267679C - Detecteurs d'interference ntsc dans un meme canal reagissant a des signaux recus du canal q dans des recepteurs de signaux de tv numerique - Google Patents

Detecteurs d'interference ntsc dans un meme canal reagissant a des signaux recus du canal q dans des recepteurs de signaux de tv numerique Download PDF

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Publication number
CA2267679C
CA2267679C CA002267679A CA2267679A CA2267679C CA 2267679 C CA2267679 C CA 2267679C CA 002267679 A CA002267679 A CA 002267679A CA 2267679 A CA2267679 A CA 2267679A CA 2267679 C CA2267679 C CA 2267679C
Authority
CA
Canada
Prior art keywords
channel
signal
ntsc
channel baseband
amplitude
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
CA002267679A
Other languages
English (en)
Other versions
CA2267679A1 (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 CA2267679A1 publication Critical patent/CA2267679A1/fr
Application granted granted Critical
Publication of CA2267679C publication Critical patent/CA2267679C/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
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/04—Systems for the transmission of one television signal, i.e. both picture and sound, by a single carrier
    • 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
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L1/0071—Use of interleaving
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Artificial Intelligence (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)

Abstract

La présente invention concerne un détecteur d'interférence NTSC (44) dans un même canal détectant la présence d'un signal d'interférence NSTC dans le signal reçu du canal Q orthogonal au signal reçu du canal I, au lieu de détecter la présence d'un signal interférant NTSC dans le signal reçu du canal I. En déterminant si une quantité significative ou non d'interférence NTSC dans le même canal accompagne le signal reçu du canal Q, on détermine, de manière inférante, si une quantité significative ou non d'interférences NTSC dans le même canal accompagne également le signal reçu du canal I de façon à faire corriger de trop nombreuses erreurs dans le décodage en treillis d'un signal reçu égalisé du canal I par le détecteur Reed-Solomon (40) en suivant le décodeur en treillis (34). La détermination exacte des niveaux d'interférence dans un même canal est simplifiée, essentiellement, parce qu'aucune polarisation distincte ne survient pendant la détection synchrone de phase en quadrature de porteuse pilote d'un signal de télévision numérique VSB AM.
CA002267679A 1996-10-02 1997-10-02 Detecteurs d'interference ntsc dans un meme canal reagissant a des signaux recus du canal q dans des recepteurs de signaux de tv numerique Expired - Fee Related CA2267679C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US72479996A 1996-10-02 1996-10-02
US08/724,799 1996-10-02
PCT/US1997/016931 WO1998015120A1 (fr) 1996-10-02 1997-10-02 Detecteurs d'interference ntsc dans un meme canal reagissant a des signaux recus du canal q dans des recepteurs de signaux de tv numerique

Publications (2)

Publication Number Publication Date
CA2267679A1 CA2267679A1 (fr) 1998-04-09
CA2267679C true CA2267679C (fr) 2005-02-08

Family

ID=24911961

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002267679A Expired - Fee Related CA2267679C (fr) 1996-10-02 1997-10-02 Detecteurs d'interference ntsc dans un meme canal reagissant a des signaux recus du canal q dans des recepteurs de signaux de tv numerique

Country Status (4)

Country Link
KR (1) KR20000048803A (fr)
CN (1) CN1115875C (fr)
CA (1) CA2267679C (fr)
WO (1) WO1998015120A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA03009276A (es) * 2001-04-16 2004-02-12 Thomson Licensing Sa CONTROL DE GANANCIA PARA UN DESMODULADOR DE TELEVISIoN DE ALTA DEFINICIoN.
US20090185648A1 (en) * 2008-01-22 2009-07-23 Guo-Hau Gau Methods and devices for processing signals transmitted via communication system
CN112399097B (zh) * 2019-08-13 2024-01-19 深圳Tcl数字技术有限公司 一种信号干扰处理方法、数字电视及存储介质
US11469785B2 (en) * 2020-03-13 2022-10-11 Texas Instruments Incorporated Receiver circuit with interference detection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5479449A (en) * 1994-05-04 1995-12-26 Samsung Electronics Co. Ltd. Digital VSB detector with bandpass phase tracker, as for inclusion in an HDTV receiver.
US5546132A (en) * 1994-12-07 1996-08-13 Goldstar Co., Ltd. NTSC interference detector

Also Published As

Publication number Publication date
CN1232591A (zh) 1999-10-20
WO1998015120A1 (fr) 1998-04-09
CN1115875C (zh) 2003-07-23
CA2267679A1 (fr) 1998-04-09
KR20000048803A (ko) 2000-07-25

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EEER Examination request
MKLA Lapsed

Effective date: 20171002