BRPI0412498A - aparelho e método para desempenhar função de controle de ganho automático (agc) que utiliza várias fontes de realimentação - Google Patents

aparelho e método para desempenhar função de controle de ganho automático (agc) que utiliza várias fontes de realimentação

Info

Publication number
BRPI0412498A
BRPI0412498A BRPI0412498-7A BRPI0412498A BRPI0412498A BR PI0412498 A BRPI0412498 A BR PI0412498A BR PI0412498 A BRPI0412498 A BR PI0412498A BR PI0412498 A BRPI0412498 A BR PI0412498A
Authority
BR
Brazil
Prior art keywords
agc
generate
signal
gain control
operates
Prior art date
Application number
BRPI0412498-7A
Other languages
English (en)
Inventor
Daniel Mark Hutchinson
Clint Alan Ecoff
Gary Dean Grubbs
Matthew Thomas Mayer
Original Assignee
Thomson Licensing
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 filed Critical Thomson Licensing
Publication of BRPI0412498A publication Critical patent/BRPI0412498A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • 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
    • H04N5/52—Automatic gain control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
    • 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
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Television Receiver Circuits (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

"APARELHO E MéTODO PARA DESEMPENHAR FUNçãO DE CONTROLE DE GANHO AUTOMáTICO (AGC) QUE UTILIZA VáRIAS FONTES DE REALIMENTAçãO". Um aparelho (20), como um receptor de sinais de televisão, desempenha uma função AGC usando várias fontes de realimentação que geram sinais AGC tanto de banda estreita quanto de banda larga de maneira adaptativa. De acordo com uma modalidade exemplar, o aparelho (20) inclui um sintonizador (10, 15, 20, 25, 30) operante para gerar um primeiro e um segundo sinais IF. Um primeiro demodulador (40) opera de modo a gerar um primeiro sinal AGC em resposta ao primeiro sinal IF. Um segundo demodulador (50) opera de modo a gerar um segundo sinal AGC em resposta ao segundo sinal IF. Um detector AGC de banda larga (60) opera de modo a gerar um terceiro sinal AGC em resposta a pelo menos um dos primeiro e segundo sinais IF. Um comutador (70) opera de modo a enviar seletivamente um dos primeiro, segundo e terceiro sinais AGC ao sintonizador (10, 15, 20, 25, 30) em resposta a uma condição predeterminada.
BRPI0412498-7A 2003-07-14 2004-07-08 aparelho e método para desempenhar função de controle de ganho automático (agc) que utiliza várias fontes de realimentação BRPI0412498A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48720803P 2003-07-14 2003-07-14
PCT/US2004/021746 WO2005009034A1 (en) 2003-07-14 2004-07-08 Apparatus and method for providing an agc function using multiple feedback sources

Publications (1)

Publication Number Publication Date
BRPI0412498A true BRPI0412498A (pt) 2006-09-19

Family

ID=34079352

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0412498-7A BRPI0412498A (pt) 2003-07-14 2004-07-08 aparelho e método para desempenhar função de controle de ganho automático (agc) que utiliza várias fontes de realimentação

Country Status (10)

Country Link
US (1) US7602448B2 (pt)
EP (1) EP1645117B1 (pt)
JP (1) JP4682133B2 (pt)
KR (1) KR101014614B1 (pt)
CN (1) CN1823522A (pt)
BR (1) BRPI0412498A (pt)
DE (1) DE602004010520T2 (pt)
MX (1) MXPA06000557A (pt)
MY (1) MY135872A (pt)
WO (1) WO2005009034A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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US7053961B2 (en) * 2004-02-17 2006-05-30 Sony Corporation System and method for TV automatic gain control (AGC)
US7274409B2 (en) * 2004-08-02 2007-09-25 General Instrument Corporation Dynamically controlled tuner AGC attack point
RU2308152C2 (ru) * 2005-08-04 2007-10-10 Открытое акционерное общество "Концерн "Созвездие" Способ обработки и приемное устройство широкополосных сигналов
US8260240B2 (en) * 2005-08-16 2012-09-04 Agere Systems Inc. Single path architecture and automatic gain control (SAGC) algorithm for low power SDARS receivers
ATE429733T1 (de) * 2005-10-05 2009-05-15 Loewe Opta Gmbh Empfängerschaltung für ein nachrichtentechnisches empfangsgerät
KR100872550B1 (ko) * 2006-08-24 2008-12-08 엘지이노텍 주식회사 튜너의 자동이득제어회로
US8456579B2 (en) 2008-02-11 2013-06-04 Sony Corporation Dynamic RF AGC switch/mixer for optimal NTSC video detection
JP4557057B2 (ja) * 2008-06-30 2010-10-06 ソニー株式会社 受信装置及び受信方法
US20110181354A1 (en) * 2008-09-30 2011-07-28 Panasonic Corporation Reception device and electronic device using the same
CN101477816B (zh) * 2008-12-25 2012-12-26 无锡中星微电子有限公司 一种录音模式转换方法及装置
DE102009022087A1 (de) * 2009-05-20 2010-11-25 Asc-Tec Gmbh Antennen-Satelliten-Communication-Technik Breitbandverstärker
US8588348B2 (en) * 2009-07-10 2013-11-19 Freescale Semiconductor, Inc. Receiver with automatic gain control
KR101895990B1 (ko) * 2012-01-27 2018-10-18 삼성전자주식회사 방송 수신 장치 및 방법
TWI565232B (zh) * 2014-04-16 2017-01-01 微晶片科技公司 增益控制方法、模組與使用其的無線信號接收器

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0522175A (ja) * 1991-07-15 1993-01-29 Matsushita Electric Ind Co Ltd 車載用アンテナアンプ装置
US5339454A (en) * 1991-08-05 1994-08-16 Ford Motor Company Automatic gain control for RF amplifier
JPH0730824A (ja) * 1993-07-07 1995-01-31 Matsushita Electric Ind Co Ltd ディジタル放送受信機
JPH08181556A (ja) * 1994-12-21 1996-07-12 Toshiba Corp デジタルアナログ共用チューナ
US6061096A (en) * 1997-03-19 2000-05-09 Samsung Electronics Co., Ltd. Digital-and-analog-TV-signal receivers, each with single first detector and shared high-band I-F amplification
GB2326546B (en) * 1997-06-20 2001-01-03 Nokia Mobile Phones Ltd Gain control
KR100265236B1 (ko) * 1997-08-22 2000-09-15 윤종용 아날로그/디지털겸용튜너를구비한tv수상기
JPH11261922A (ja) * 1998-03-16 1999-09-24 Alps Electric Co Ltd ディジタルテレビジョンチュ−ナ
JP3558874B2 (ja) * 1998-05-28 2004-08-25 アルプス電気株式会社 自動利得制御回路
JP4142216B2 (ja) * 1998-09-28 2008-09-03 松下電器産業株式会社 Ｖｓｂ受信機
JP2001127732A (ja) * 1999-10-28 2001-05-11 Matsushita Electric Ind Co Ltd 受信装置
JP3673997B2 (ja) * 2000-07-06 2005-07-20 株式会社ケンウッド 放送受信装置
JP4295479B2 (ja) * 2002-07-16 2009-07-15 アルプス電気株式会社 テレビジョンチューナ
US8130726B2 (en) 2005-12-20 2012-03-06 Qualcomm Incorporated Coarse bin frequency synchronization in a communication system

Also Published As

Publication number Publication date
DE602004010520T2 (de) 2008-11-06
US20060187360A1 (en) 2006-08-24
CN1823522A (zh) 2006-08-23
EP1645117A1 (en) 2006-04-12
KR101014614B1 (ko) 2011-02-16
DE602004010520D1 (de) 2008-01-17
EP1645117B1 (en) 2007-12-05
JP4682133B2 (ja) 2011-05-11
KR20060033908A (ko) 2006-04-20
WO2005009034A1 (en) 2005-01-27
JP2007532013A (ja) 2007-11-08
US7602448B2 (en) 2009-10-13
MY135872A (en) 2008-07-31
MXPA06000557A (es) 2006-07-10

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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.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

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