BR0015044A - Sistema de comunicação de banda passante para transmitir eficientemente sinais de banda passante - Google Patents

Sistema de comunicação de banda passante para transmitir eficientemente sinais de banda passante

Info

Publication number
BR0015044A
BR0015044A BR0015044-4A BR0015044A BR0015044A BR 0015044 A BR0015044 A BR 0015044A BR 0015044 A BR0015044 A BR 0015044A BR 0015044 A BR0015044 A BR 0015044A
Authority
BR
Brazil
Prior art keywords
digital signal
passband
bits
communication system
analog signal
Prior art date
Application number
BR0015044-4A
Other languages
English (en)
Inventor
Forrest M Farhan
Paul E Quesenberry
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Publication of BR0015044A publication Critical patent/BR0015044A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • H04L12/287—Remote access server, e.g. BRAS
    • H04L12/2874—Processing of data for distribution to the subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2801—Broadband local area networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2212/00—Encapsulation of packets

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Analogue/Digital Conversion (AREA)
  • Optical Communication System (AREA)
  • Details Of Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

"SISTEMA DE COMUNICAçãO DE BANDA PASSANTE PARA TRANSMITIR EFICIENTEMENTE SINAIS DE BANDA PASSANTE". Um sistema de comunicação de banda passante (60) como, por exemplo, um sistema de televisão a cabo, inclui um caminho para frente para transmitir informação de um equipamento da extremidade de entrada para os assinantes e o caminho inverso para transmitir informação dos assinantes para os equipamentos da extremidade de entrada. O caminho inverso inclui uma estação transmissora (65) que recebe um primeiro sinal analógico, converte o primeiro sinal analógico para um primeiro sinal digital tendo um primeiro número de bits, codifica o primeiro sinal digital para gerar um segundo sinal digital, tendo um segundo número de bits menor do que o primeiro número de bits, em seguida, transmite opticamente o segundo sinal digital. Uma estação receptora (70), também localizada no caminho inverso, recebe o segundo sinal digital, decodifica o segundo sinal digital para gerar um terceiro sinal digital tendo um terceiro número de bits maior do que o segundo número de bits, em seguida, converte o terceiro sinal digital para um segundo sinal analógico que se aproxima do primeiro sinal analógico.
BR0015044-4A 1999-11-05 2000-10-25 Sistema de comunicação de banda passante para transmitir eficientemente sinais de banda passante BR0015044A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/434,267 US6417949B1 (en) 1999-11-05 1999-11-05 Broadband communication system for efficiently transmitting broadband signals
PCT/US2000/029399 WO2001035588A2 (en) 1999-11-05 2000-10-25 Analogue to digital and digital to analogue conversion for broadband transmission

Publications (1)

Publication Number Publication Date
BR0015044A true BR0015044A (pt) 2002-06-18

Family

ID=23723535

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0015044-4A BR0015044A (pt) 1999-11-05 2000-10-25 Sistema de comunicação de banda passante para transmitir eficientemente sinais de banda passante

Country Status (4)

Country Link
US (1) US6417949B1 (pt)
EP (1) EP1230773A2 (pt)
BR (1) BR0015044A (pt)
WO (1) WO2001035588A2 (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7257328B2 (en) * 1999-12-13 2007-08-14 Finisar Corporation System and method for transmitting data on return path of a cable television system
US7222358B2 (en) * 1999-12-13 2007-05-22 Finisar Corporation Cable television return link system with high data-rate side-band communication channels
JP2003526254A (ja) * 2000-02-29 2003-09-02 ジェネラル・インストルメント・コーポレーション ケーブルテレビネットワーク性能を向上させるデジタル処理装置
JP2002208896A (ja) * 2001-01-05 2002-07-26 Mitsubishi Electric Corp Ｌｓｉシステムおよび半導体装置
US6824324B2 (en) * 2001-12-14 2004-11-30 Hewlett-Packard Development Company, L.P. Technique for providing a pivot structure that facilitates the rapid formation of pivot couplings between components
US7971225B2 (en) * 2002-02-08 2011-06-28 Finisar Corporation Bandpass component decimation and transmission of data in cable television digital return path
US8156535B2 (en) * 2002-02-12 2012-04-10 Finsar Corporation Data rate compression device for cable television return path using bandpass puncturing
US7725036B2 (en) * 2002-02-12 2010-05-25 Finisar Corporation Efficient transmission of digital return path data in cable television return path
US7751718B2 (en) * 2002-02-12 2010-07-06 Finisar Corporation Efficient transmission of digital return path data in cable television return path
US7359447B2 (en) * 2002-02-19 2008-04-15 Finisar Corporation Asynchronous digital signal combiner and method of combining asynchronous digital signals in cable television return path
US7689128B2 (en) * 2002-10-30 2010-03-30 Finisar Corporation Return path transmitter with extended digital processing circuitry
US7519297B2 (en) 2002-11-08 2009-04-14 Finisar Corporation Cable television system with separate radio frequency hub and ethernet hub
US20040103440A1 (en) * 2002-11-25 2004-05-27 General Instrument Corporation Transmitter in a digital return link for use in an HFC network
WO2005057816A1 (en) * 2003-12-08 2005-06-23 Siemens Aktiengesellschaft Modulator and demodulator for passive optical network
US7519078B2 (en) * 2004-05-12 2009-04-14 Finisar Corporation Automated ethernet configuration of CATV network
US8032916B2 (en) * 2004-05-12 2011-10-04 Finisar Corporation Single master clock control of Ethernet data transfer over both a cable TV return path and an Ethernet forward path
US7765576B2 (en) * 2004-05-12 2010-07-27 Finsiar Corporation Changing communication mode in a CATV pathway using mute commands

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393516A (en) * 1979-03-09 1983-07-12 Electric Power Research Institute, Inc. Data transmission system and method
US4763317A (en) 1985-12-13 1988-08-09 American Telephone And Telegraph Company, At&T Bell Laboratories Digital communication network architecture for providing universal information services
JPH073953B2 (ja) * 1987-10-30 1995-01-18 日本電気株式会社 コード変換器
US4816791A (en) 1987-11-27 1989-03-28 General Electric Company Stripline to stripline coaxial transition
GB9008162D0 (en) 1990-04-10 1990-06-06 British Telecomm Signal distribution
US5627879A (en) 1992-09-17 1997-05-06 Adc Telecommunications, Inc. Cellular communications system with centralized base stations and distributed antenna units
US5790523A (en) 1993-09-17 1998-08-04 Scientific-Atlanta, Inc. Testing facility for a broadband communications system
US5640159A (en) 1994-01-03 1997-06-17 International Business Machines Corporation Quantization method for image data compression employing context modeling algorithm
US5544161A (en) 1995-03-28 1996-08-06 Bell Atlantic Network Services, Inc. ATM packet demultiplexer for use in full service network having distributed architecture
US5684799A (en) 1995-03-28 1997-11-04 Bell Atlantic Network Services, Inc. Full service network having distributed architecture
AU6386896A (en) 1995-06-22 1997-01-22 Scientific-Atlanta, Inc. Hybrid fiber coax communications system
US5930231A (en) 1995-06-30 1999-07-27 Scientific-Atlanta, Inc. Block spectrum receiver for a broadband communications system
US5790533A (en) 1995-10-27 1998-08-04 Motorola, Inc. Method and apparatus for adaptive RF power control of cable access units
US5966636A (en) 1995-11-29 1999-10-12 Motorola, Inc. Method and apparatus for multiple access over randomized slots with collision detection in a cable telephony system
US5878325A (en) 1996-07-12 1999-03-02 At&T Corp Hybrid fiber-coax system having at least one digital fiber node
US5790705A (en) 1996-09-13 1998-08-04 Apple Computer, Inc. Compression techniques for substantially lossless digital image data storage
US6226296B1 (en) * 1997-01-16 2001-05-01 Physical Optics Corporation Metropolitan area network switching system and method of operation thereof
WO1998038800A1 (en) 1997-02-25 1998-09-03 British Broadcasting Corporation Digital signal compression encoding with improved quantisation
GB9706920D0 (en) 1997-04-04 1997-05-21 Snell & Wilcox Ltd Improvements in digital video signal processing
JP2002533975A (ja) * 1998-12-21 2002-10-08 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ｎ−ビットソースワードを対応するｍ−ビットチャネルワードに符号化し、ｍ−ビットチャネルワードを対応するｎ−ビットソースワードに復号化するための装置
JP2004500740A (ja) 1999-04-23 2004-01-08 ジェネラル・インストルメント・コーポレーション デジタル変換及び伝送を用いたｈｆｃリターンパスシステム

Also Published As

Publication number Publication date
WO2001035588A2 (en) 2001-05-17
WO2001035588A3 (en) 2001-12-13
EP1230773A2 (en) 2002-08-14
US6417949B1 (en) 2002-07-09

Similar Documents

Publication Publication Date Title
BR0015044A (pt) Sistema de comunicação de banda passante para transmitir eficientemente sinais de banda passante
BR0016369A (pt) Transmissor de trajeto de retorno, métodos de transmitir dados e de receber um sinal de entrada digital, e, receptor de sinal óptico
CA2251698A1 (en) A method and system to transmit video/data signals from a device to a communications network connection card
BR0014187A (pt) Receptor ótico digital para sistemas de televisão a cabo
BR9201106A (pt) Sistema de seguranca para transmissao de um sinal,methodo para substituir um modulo de seguranca substituivel no mesmo,decodificador para receber e separar um sinal,module de seguranca substituivel,processo de decodificar um sinal,aparelho para converter sistema de recepcao analogo,metodo de comunicar informacao de assinante,decodificador para decodificar uma chave e pacote de dados composto
ES2093019T3 (es) Procedimiento y aparato para proporcionar conexion en tiempo real de canales de transmision de ancho de banda elevado.
KR910008995A (ko) 리셋 업링크 보호 밴드가 있는 연속적인 다운링크 및 버스트 업링크 전송 형식을 갖는 광통신 시스템(fiber optic telecommunication system)
BR9610689A (pt) Aparelho, sistema e método de telecomunicações com um ponto de transferência de sinal aumentado
RU94043805A (ru) Способ образования службы связи и устройство связи для использования в системах связи
DE69021083D1 (de) Telekommunikationssystem.
BR9407842A (pt) Comutador de matriz rede dispositivo para a transmissão bidirecional simultânea de sinais de largura de banda de video e métodos para a transmissão simultânea de sinais de video analógicos para equalizar automaticamente um sinal e para a transmissão e comutação de sinais de video analógicos e dados digitais
AR022946A1 (es) Red hibrida de fibra/coaxil, un transmisor y un receptor para su uso con la red, y un metodo para procesar datos en la red
BR9609866A (pt) Método e aparelho para transmissão de sinais de áudio codificados através de um canal de transmissão com comprimento de banda limitado
EP1233549A3 (en) Communications System
TW329072B (en) Transmitting apparatus
BR0208581A (pt) Transmissor para transmitir sinais ópticos reversos em um sistema de comunicação de banda larga, e sistema de comunicação para transmitir e receber sinais por um meio de comunicação
ES2139942T3 (es) Sistema de comunicacion hibrido por fibra/cable coaxial para video y telefonia.
ATE245323T1 (de) Netzwerk sowie koppelgerät zur verbindung zweier segmente in einem derartigen netzwerk und netzwerkteilnehmer
ATE282928T1 (de) Verbessertes kommunikationssicherheitssystem
BR9706810A (pt) Aparelho de videofone, processo e sistema para telefonia e conferência por áudio e vìdeo com linha de fios.
JPH01282931A (ja) 光波長多重・光符号多重伝送装置
ES2175720T3 (es) Procedimiento para la transmision de señales de datos adicionales y de una señal de datos utiles a traves de conexiones opticas.
RU94021640A (ru) Линия связи
EP0989703A3 (en) Serial transmission path switching system
SE9603532L (sv) Förbättringar av eller avseende dataöverföring

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 8A 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 DA RPI 2008 DE 30/06/2009.