BRPI0309317A2 - Processamento de aquisição de canal para um receptor de televisão - Google Patents

Processamento de aquisição de canal para um receptor de televisão

Info

Publication number
BRPI0309317A2
BRPI0309317A2 BR0309317-4A BRPI0309317A BRPI0309317A2 BR PI0309317 A2 BRPI0309317 A2 BR PI0309317A2 BR PI0309317 A BRPI0309317 A BR PI0309317A BR PI0309317 A2 BRPI0309317 A2 BR PI0309317A2
Authority
BR
Brazil
Prior art keywords
channel
television receiver
eeprom
channel acquisition
offsets
Prior art date
Application number
BR0309317-4A
Other languages
English (en)
Inventor
Weixiao Liu
Aaron Reel Bouillet
Matthew Thomas Mayer
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BRPI0309317A2 publication Critical patent/BRPI0309317A2/pt
Publication of BRPI0309317A8 publication Critical patent/BRPI0309317A8/pt

Links

Classifications

    • 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
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits
    • 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
    • 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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0071—Control of loops
    • 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)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

"PROCESSAMENTO DE AQUISIçãO DE CANAL PARA UM RECEPTOR DE TELEVISãO". A aquisição de canal em um receptor de sinal de televisão digital é aperfeiçoada determinando os deslocamentos da freq³ência do laço de rasteiro da portadora e os deslocamentos da recuperação de regulação de símbolo para cada canal no receptor de televisão. Os deslocamentos são armazenados em EEPROMs respectivas (EEPROM do CTL, EEPROM da STR) para cada canal. Quando um canal é para ser adquirido no receptor de TV, o comando de sintonia será aplicado nas EEPROMs apropriadas (EEPROM do CTL, EEPROM da STR) e os valores respectivos são transportados para o demodulador da VSB (40) para iniciar a aquisição do canal.
BRPI0309317A 2002-04-19 2003-04-14 processamento de aquisição de canal para um receptor de televisão BRPI0309317A8 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37402902P 2002-04-19 2002-04-19
PCT/US2003/011448 WO2003090441A2 (en) 2002-04-19 2003-04-14 Channel aquisition processing for a television receiver

Publications (2)

Publication Number Publication Date
BRPI0309317A2 true BRPI0309317A2 (pt) 2005-02-15
BRPI0309317A8 BRPI0309317A8 (pt) 2018-05-08

Family

ID=29251121

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0309317A BRPI0309317A8 (pt) 2002-04-19 2003-04-14 processamento de aquisição de canal para um receptor de televisão

Country Status (9)

Country Link
US (1) US7230654B2 (pt)
EP (1) EP1497977A4 (pt)
JP (2) JP2005523649A (pt)
KR (1) KR100985740B1 (pt)
CN (1) CN100589537C (pt)
AU (1) AU2003224963A1 (pt)
BR (1) BRPI0309317A8 (pt)
MX (1) MXPA04010336A (pt)
WO (1) WO2003090441A2 (pt)

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FR2846165A1 (fr) * 2002-10-17 2004-04-23 St Microelectronics Sa Procede d'estimation de la phase dans un systeme de communication numerique et boucle a verrouillage de phase
MXPA06013059A (es) 2004-05-12 2007-02-14 Korea Electronics Telecomm Aparato y metodo para sincronizacion de frecuencia correspondiente en un repetidor de canal activo.
WO2007091779A1 (en) 2006-02-10 2007-08-16 Lg Electronics Inc. Digital broadcasting receiver and method of processing data
WO2007126196A1 (en) 2006-04-29 2007-11-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007136166A1 (en) 2006-05-23 2007-11-29 Lg Electronics Inc. Digital broadcasting system and method of processing data
US7873104B2 (en) 2006-10-12 2011-01-18 Lg Electronics Inc. Digital television transmitting system and receiving system and method of processing broadcasting data
KR101285887B1 (ko) 2007-03-26 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101253185B1 (ko) 2007-03-26 2013-04-10 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101285888B1 (ko) 2007-03-30 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
WO2009005326A2 (en) 2007-07-04 2009-01-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
US8418022B2 (en) * 2010-03-25 2013-04-09 Allen LeRoy Limberg Utilization of non-systematic (207, 187) Reed-Solomon coding in mobile/hand-held digital television receivers
US9191953B2 (en) * 2012-09-21 2015-11-17 Qualcomm Incorporated Frequency tracking loops in wireless network
US10892885B2 (en) * 2019-04-17 2021-01-12 Sequans Communications S.A. OFDM synchronization evaluation

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US4621366A (en) * 1984-02-22 1986-11-04 Universal Data Systems, Inc. Modem equalizer training using previously stored parameters
US4599732A (en) * 1984-04-17 1986-07-08 Harris Corporation Technique for acquiring timing and frequency synchronization for modem utilizing known (non-data) symbols as part of their normal transmitted data format
NO852765L (no) * 1984-07-24 1986-01-27 Universal Data Systems Inc Fremgangsmaate og apparat for automatisk identifisering av et svarende modem i et nettverk.
JPS6449312A (en) * 1987-08-19 1989-02-23 Mitsubishi Electric Corp Channel selection device
US5228062A (en) * 1990-04-16 1993-07-13 Telebit Corporation Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in multicarrier modems
KR0170690B1 (ko) * 1995-09-23 1999-03-20 김광호 반송파 및 심볼타이밍 복원완료 검출회로와 그 방법 및 이를 채용한 고해상도 텔레비젼
US6359944B1 (en) * 1996-04-17 2002-03-19 Thomson Licensing S.A. Tuning system for achieving quick acquisition times for a digital satellite receiver
KR100200589B1 (ko) 1996-06-12 1999-06-15 윤종용 고해상도 텔레비젼 수신기의 디지털 복조회로 및 방법
US5870438A (en) * 1996-09-26 1999-02-09 Rockwell Int'l. Corp. Fast resynchronization system for high-speed data transmission
JPH11112588A (ja) * 1997-09-29 1999-04-23 Matsushita Electric Ind Co Ltd Ｐｓｋ復調器
US6671002B1 (en) * 1998-09-28 2003-12-30 Matsushita Electric Industrial Co., Ltd. VSB receiver
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US6226323B1 (en) 1998-11-03 2001-05-01 Broadcom Corporation Technique for minimizing decision feedback equalizer wordlength in the presence of a DC component
US6647071B2 (en) * 1998-11-06 2003-11-11 Texas Instruments Incorporated Method and apparatus for equalization and tracking of coded digital communications signals
JP3544147B2 (ja) * 1999-05-31 2004-07-21 株式会社東芝 Ｏｆｄｍ信号受信装置、ｏｆｄｍ信号通信システム及びその通信制御方法
MY138222A (en) * 1999-07-19 2009-05-29 Thomson Licensing Sa Tuning system for achieving rapid signal acquisition for a digital satellite receiver
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Also Published As

Publication number Publication date
EP1497977A2 (en) 2005-01-19
MXPA04010336A (es) 2005-02-03
AU2003224963A1 (en) 2003-11-03
KR20040102121A (ko) 2004-12-03
KR100985740B1 (ko) 2010-10-06
JP5390971B2 (ja) 2014-01-15
CN100589537C (zh) 2010-02-10
EP1497977A4 (en) 2008-07-02
US7230654B2 (en) 2007-06-12
CN1659863A (zh) 2005-08-24
WO2003090441A3 (en) 2004-02-26
WO2003090441A2 (en) 2003-10-30
AU2003224963A8 (en) 2003-11-03
JP2009296612A (ja) 2009-12-17
JP2005523649A (ja) 2005-08-04
US20050254601A1 (en) 2005-11-17
BRPI0309317A8 (pt) 2018-05-08

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A ANUIDADE. PAGAR RESTAURACAO.

B08H Application fees: decision cancelled [chapter 8.8 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 NA RPI 2259 DE 22/04/2014

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]