BR9900784A - Rádio receptor para receber sinais de televisão digitais selecionados - Google Patents

Rádio receptor para receber sinais de televisão digitais selecionados

Info

Publication number
BR9900784A
BR9900784A BR9900784-3A BR9900784A BR9900784A BR 9900784 A BR9900784 A BR 9900784A BR 9900784 A BR9900784 A BR 9900784A BR 9900784 A BR9900784 A BR 9900784A
Authority
BR
Brazil
Prior art keywords
modulation
vsb
digital television
qam
intermediate frequency
Prior art date
Application number
BR9900784-3A
Other languages
English (en)
Inventor
Allen Leroy Limberg
Original Assignee
Eletronics 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 Eletronics Co Ltd filed Critical Eletronics Co Ltd
Publication of BR9900784A publication Critical patent/BR9900784A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • 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
    • 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
    • H04N5/455—Demodulation-circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Detergent Compositions (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

"RáDIO RECEPTOR PARA RECEBER SINAIS DE TELEVISãO DIGITAIS SELECIONADOS". Um receptor de televisão digital (DTV) QAM/VSB do tipo de múltipla conversão utiliza os mesmos conjuntos de circuito até um amplificador de penúltima Frequência Intermediária para receber sinais de DTV não importa o fato deles utilizarem modulação pela amplitude de quadratura (QAM) ou modulação de banda residual (VSB). O conversor utilizado para gerar sinais de frequência intermediária final quando modulação QAM é recebida e o conversor utilizado para gerar sinais de frequência intermediária final quando modulação VSB é recebida tem respectivos misturadores e respectivos osciladores locais com controle automático de frequência e fase separados. O uso dos ditos conversores separados evita um bloco do modo de recepção VSB que de outro modo pode ocorrer com modulação VSB.
BR9900784-3A 1998-02-20 1999-02-19 Rádio receptor para receber sinais de televisão digitais selecionados BR9900784A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7542398P 1998-02-20 1998-02-20

Publications (1)

Publication Number Publication Date
BR9900784A true BR9900784A (pt) 2000-01-04

Family

ID=22125647

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9900784-3A BR9900784A (pt) 1998-02-20 1999-02-19 Rádio receptor para receber sinais de televisão digitais selecionados

Country Status (10)

Country Link
US (1) US6104763A (pt)
JP (1) JPH11331301A (pt)
KR (1) KR100285432B1 (pt)
CN (1) CN1141836C (pt)
AR (1) AR014632A1 (pt)
AU (1) AU714240B2 (pt)
BR (1) BR9900784A (pt)
CA (1) CA2262329C (pt)
SG (1) SG71906A1 (pt)
TR (1) TR200002396T2 (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100263036B1 (ko) * 1996-11-20 2000-08-01 김영환 디지탈 케이블티브이 시스템의 원격제어장치
US6333767B1 (en) * 1996-12-26 2001-12-25 Samsung Electronics Co., Ltd. Radio receivers for receiving both VSB and QAM digital television signals with carriers offset by 2.69 MHz
US5982820A (en) * 1997-07-10 1999-11-09 Samsung Electronics Co., Ltd. Bandpass phase tracker with hilbert transformation before plural-phase analog-to-digital conversion
KR100314113B1 (ko) * 1999-08-25 2001-11-15 구자홍 정합 필터 및 필터링방법, 이를 이용한 다매체 디지털 방송수신 장치
KR100348259B1 (ko) * 1999-12-21 2002-08-09 엘지전자 주식회사 잔류측파대 수신기
JP3540242B2 (ja) 2000-03-30 2004-07-07 松下電器産業株式会社 多方式対応受信装置
KR100379392B1 (ko) * 2000-08-07 2003-04-10 엘지전자 주식회사 반송파 복구 장치
KR101221914B1 (ko) * 2007-04-06 2013-01-15 엘지전자 주식회사 디지털 방송 신호 송신 장치 및 방법
CN102195666A (zh) * 2011-04-14 2011-09-21 西安烽火电子科技有限责任公司 Vhf、uhf频段宽带高速数据传输平台
CN103067331B (zh) * 2012-12-12 2015-05-20 华中科技大学 一种qam光矢量信号产生及远程外差探测装置
RU181253U1 (ru) * 2017-11-13 2018-07-06 Федеральное государственное бюджетное учреждение науки Институт прикладной астрономии Российской академии наук (ИПА РАН) Цифровой гетеродин на программируемой логической интегральной схеме
DE102019131216B3 (de) * 2019-11-19 2021-05-06 Endress+Hauser Flowtec Ag Puls-Amplituden-Modulations-Transceiver, Feldgerät und Verfahren zum Betreiben des Puls-Amplituden-Modulations-Transceivers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597205A (en) * 1984-05-04 1986-07-01 Guest William H Snow plow clamp assembly
US5715012A (en) * 1996-03-13 1998-02-03 Samsung Electronics Co., Ltd. Radio receivers for receiving both VSB and QAM digital HDTV signals
US5506636A (en) * 1994-06-28 1996-04-09 Samsung Electronics Co., Ltd. HDTV signal receiver with imaginary-sample-presence detector for QAM/VSB mode selection
US5966188A (en) * 1996-12-26 1999-10-12 Samsung Electronics Co., Ltd. Decimation of baseband DTV signals prior to channel equalization in digital television signal receivers
US5982820A (en) * 1997-07-10 1999-11-09 Samsung Electronics Co., Ltd. Bandpass phase tracker with hilbert transformation before plural-phase analog-to-digital conversion

Also Published As

Publication number Publication date
KR19990072647A (ko) 1999-09-27
CA2262329A1 (en) 1999-08-20
CA2262329C (en) 2002-05-07
SG71906A1 (en) 2000-04-18
AR014632A1 (es) 2001-03-28
AU714240B2 (en) 1999-12-23
CN1141836C (zh) 2004-03-10
US6104763A (en) 2000-08-15
KR100285432B1 (ko) 2001-03-15
JPH11331301A (ja) 1999-11-30
TR200002396T2 (tr) 2000-11-21
CN1233912A (zh) 1999-11-03
AU1470899A (en) 1999-09-02

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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 10A., E 11A. ANUIDADES.

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 DA RPI 2047 DE 30/03/2010.