BR9904769A - Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digital - Google Patents

Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digital

Info

Publication number
BR9904769A
BR9904769A BR9904769-1A BR9904769A BR9904769A BR 9904769 A BR9904769 A BR 9904769A BR 9904769 A BR9904769 A BR 9904769A BR 9904769 A BR9904769 A BR 9904769A
Authority
BR
Brazil
Prior art keywords
signal
digital
television receiver
degradations
providing
Prior art date
Application number
BR9904769-1A
Other languages
English (en)
Inventor
Richard W Citta
Raymond C Hauge
Paul Adam Snopko
Original Assignee
Zenith Electronics Corp
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 Zenith Electronics Corp filed Critical Zenith Electronics Corp
Publication of BR9904769A publication Critical patent/BR9904769A/pt

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382Demodulation or channel decoding, e.g. QPSK demodulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region
    • H04N5/21Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/38Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H04N5/40Modulation circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Picture Signal Circuits (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

''PROCESSO DE OPERAçãO DE UM SISTEMA DE SINAL DIGITAL, E, SISTEMA PARA FORNECIMENTO DE UM SINAL DE BANDA BASE DIGITAL''. Um codificador - modular para acoplar um sinal de televisão de banda base digital a um receptor de televisão digital VSB que inclui filtros, circuito de equalização e circuito de correção de erro dianteiro para corrigir degradações de sinal que estão abaixo de um lado limiar. O codificador - modulador processa o sinal de banda base para uma transmissão de baixa potência em um canal RF com características de banda passante menos do que o nominal. Um cabo coaxial ou outra ligação de comunicação de baixo ruído diretamente conecta o sinal de RF do receptor de televisão. Quaisquer erros ou degradações de sinal no sinal transmitido que estão abaixo do predeterminado limiar são corrigidos pelos filtros e circuito de equalização construídos no receptor de televisão digital VSB.
BR9904769-1A 1998-02-06 1999-01-06 Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digital BR9904769A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2027498A 1998-02-06 1998-02-06
PCT/US1999/000130 WO1999040721A1 (en) 1998-02-06 1999-01-06 Vsb encoder and rf modulator for digital television receiver

Publications (1)

Publication Number Publication Date
BR9904769A true BR9904769A (pt) 2000-03-08

Family

ID=21797699

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9904769-1A BR9904769A (pt) 1998-02-06 1999-01-06 Processo de operação de um sistema de sinal digital, e, sistema para fornecimento de um sinal de banda base digital

Country Status (12)

Country Link
US (1) US6559898B1 (pt)
JP (1) JP2001519993A (pt)
KR (1) KR100470737B1 (pt)
CN (1) CN1148958C (pt)
AR (1) AR014501A1 (pt)
AU (1) AU2026499A (pt)
BR (1) BR9904769A (pt)
CA (1) CA2280161C (pt)
HK (1) HK1027701A1 (pt)
ID (1) ID22693A (pt)
TW (1) TW416219B (pt)
WO (1) WO1999040721A1 (pt)

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JP4517436B2 (ja) * 2000-02-09 2010-08-04 ソニー株式会社 受信システム、受信装置、及び受信システムの制御方法
TW501371B (en) * 2000-03-03 2002-09-01 Sony Computer Entertainment Inc Signal converter
US6724439B1 (en) 2000-08-04 2004-04-20 Zenith Electronics Corporation Low cost VSB encoder and RF modulator for supplying a substantially 6 MHZ VSB signal to digital television receiver
KR100424496B1 (ko) * 2000-08-31 2004-03-26 삼성전자주식회사 디지털 vsb시스템의 동기신호를 이용한 이퀄라이져 제어 방법 및 장치
US7352411B2 (en) * 2000-12-15 2008-04-01 Broadcom Corporation Digital IF demodulator
US6919930B2 (en) * 2001-04-06 2005-07-19 Zenith Electronics Corporation Digital television signal translator
DE10163798A1 (de) * 2001-12-22 2003-07-03 Philips Intellectual Property Fernsehsignal-Empfänger mit universalem Ausgang für verschiedenartige Oberflächenwellenfilter
US7847864B1 (en) * 2002-03-01 2010-12-07 Broadcom Corporation All digital radio frequency modulator
US7489362B2 (en) 2003-03-04 2009-02-10 Broadcom Corporation Television functionality on a chip
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US20070076819A1 (en) * 2005-09-30 2007-04-05 Axcera, Llc 8VSB bandwidth-limited peak filter
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US10171200B2 (en) * 2013-08-27 2019-01-01 Zte Corporation Optical communication using super-nyquist signals
KR102118976B1 (ko) 2018-08-24 2020-06-04 주식회사 비즈닉스 콘택트렌즈 진열장치 및 이를 이용한 콘택트렌즈 전시방법
KR20200074041A (ko) 2018-12-14 2020-06-24 장세진 콘택트렌즈 진열장치 및 이를 이용한 콘택트렌즈 진열장치 제어방법
KR20200074042A (ko) 2018-12-14 2020-06-24 장세진 콘택트렌즈 진열 시스템 및 이를 이용한 콘택트렌즈 진열 시스템 제어방법
KR20220015200A (ko) 2020-07-30 2022-02-08 주식회사 비즈닉스 콘택트렌즈 버츄얼 피팅 시스템 및 이를 이용한 콘택트렌즈 버츄얼 피팅 방법
KR20220015202A (ko) 2020-07-30 2022-02-08 주식회사 비즈닉스 렌즈 큐브, 콘택트렌즈 버츄얼 피팅 시스템 및 이를 이용한 콘택트렌즈 버츄얼 피팅 방법
KR20220015201A (ko) 2020-07-30 2022-02-08 주식회사 비즈닉스 콘택트렌즈 전시 스탠드, 콘택트렌즈 버츄얼 피팅 시스템 및 이를 이용한 콘택트렌즈 버츄얼 피팅 방법

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Also Published As

Publication number Publication date
CN1148958C (zh) 2004-05-05
CA2280161C (en) 2004-10-19
TW416219B (en) 2000-12-21
CA2280161A1 (en) 1999-08-12
KR100470737B1 (ko) 2005-03-07
CN1256044A (zh) 2000-06-07
HK1027701A1 (en) 2001-01-19
ID22693A (id) 1999-12-09
KR20010005743A (ko) 2001-01-15
AR014501A1 (es) 2001-02-28
JP2001519993A (ja) 2001-10-23
US6559898B1 (en) 2003-05-06
WO1999040721A1 (en) 1999-08-12
AU2026499A (en) 1999-08-23

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A 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 2082 DE 30/11/2010.