BR9812741A - Sistema para diminuir interrupções intermitentes em um sistema de radiodifusão de áudio, processos para diminuir interrupções intermitentes em uma radiodifusão de áudio, para radiodifusão em banda sobre canal, e, para receber um sinal de radiodifusão, receptor para um sinal de radiodifusão, e, transmissor de radiodifusão em banda sobre canal - Google Patents

Sistema para diminuir interrupções intermitentes em um sistema de radiodifusão de áudio, processos para diminuir interrupções intermitentes em uma radiodifusão de áudio, para radiodifusão em banda sobre canal, e, para receber um sinal de radiodifusão, receptor para um sinal de radiodifusão, e, transmissor de radiodifusão em banda sobre canal

Info

Publication number
BR9812741A
BR9812741A BR9812741-1A BR9812741A BR9812741A BR 9812741 A BR9812741 A BR 9812741A BR 9812741 A BR9812741 A BR 9812741A BR 9812741 A BR9812741 A BR 9812741A
Authority
BR
Brazil
Prior art keywords
broadcasting
signal
audio
radio
coupled
Prior art date
Application number
BR9812741-1A
Other languages
English (en)
Other versions
BRPI9812741B1 (pt
Inventor
Brian William Kroeger
Roy Ronald Stehlik
Original Assignee
Usa Digital Radio Inc
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 Usa Digital Radio Inc filed Critical Usa Digital Radio Inc
Publication of BR9812741A publication Critical patent/BR9812741A/pt
Publication of BRPI9812741B1 publication Critical patent/BRPI9812741B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
    • H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/12—Frequency diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/11—Arrangements for counter-measures when a portion of broadcast information is unavailable
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/18—Aspects of broadcast communication characterised by the type of broadcast system in band on channel [IBOC]
    • H04H2201/183—FM digital or hybrid
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)

Abstract

"SISTEMA PARA DIMINUIR INTERRUPçõES INTERMITENTES EM UM SISTEMA DE RADIODIFUSãO DE áUDIO, PROCESSOS PARA DIMINUIR INTERRUPçõES INTERMITENTES EM UMA RADIODIFUSãO DE áUDIO, PARA RADIODIFUSãO EM BANDA SOBRE CANAL, E PARA RECEBER UM SINAL DE RADIODIFUSãO, RECEPTOR PARA UM SINAL DE RADIODIFUSãO, E, TRANSMISSOR DE RADIODIFUSãO EM BANDA SOBRE CANAL". Um sistema (100) para diminuir interrupções intermitentes em um sistema de radiodifusão de áudio é fornecido em que um sinal de rádio primário e um sinal de rádio redundante são transmitidos de um sub-sistema transmissor (120) e recebidos por um sub-sistema receptor (140). A saída (112) de uma fonte de rádio (110) é acoplada à um modulador (160) para modular um sinal de radiofreq³ência (162) para acoplar a uma antena de transmissão (172). Uma segunda saída (114) de fonte de áudio (110) é acoplada à um circuito de atraso (116), para adicionar um predeterminado atraso de tempo nele. O sinal da fonte de áudio atrasado é acoplado a um modulador (164) para modular um segundo sinal de radiofreq³ência (166) que é tambem acoplado à antena de transmissão (172). O sub-sistema receptor (140) recebe ambos o sinal de rádio primário e o sinal de rádio reduntante atrasado e acopla cada um a um respectivo desmodulador (180, 182). Pelo menos desmodulador (180) inclui um circuito (181) para determinar a degradação no sinal de rádio primário e fornece um sinal de saída de medição de qualidade (186) a um circuito de controle de mistura (190). O sinal de áudio primário recuperado do desmodulador (180) é acoplado a um segundo circuito de atraso (184), o atraso de tempo do segundo circuito de atraso (184) sendo substancialmente igual ao atraso de tempo do circuito de atraso (116). A saída de áudio do circuito de atraso (184) e a saída de áudio redundante do desmodulador (182) são acopladas a um sub-sistema de mistura (135), em que cada um é combinado com um fator de ponderação e então combinados juntos para formar um sinal de áudio composto para acoplar ao circuito de saída de áudio (150).
BRPI9812741A 1997-10-09 1998-10-06 sistema e processo para a diminuição de interrupções intermitentes, processo e transmissor de radiodifusão em banda sobre canal, processo para receber um sinal de radiodifusão em banda sobre canal e receptor para um sinal de radiodifusão em banda sobre canal BRPI9812741B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/947,902 US6178317B1 (en) 1997-10-09 1997-10-09 System and method for mitigating intermittent interruptions in an audio radio broadcast system
PCT/US1998/021746 WO1999020007A1 (en) 1997-10-09 1998-10-06 A system and method for mitigating intermittent interruptions in an audio radio broadcast system

Publications (2)

Publication Number Publication Date
BR9812741A true BR9812741A (pt) 2000-08-29
BRPI9812741B1 BRPI9812741B1 (pt) 2016-08-23

Family

ID=25486969

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9812741A BRPI9812741B1 (pt) 1997-10-09 1998-10-06 sistema e processo para a diminuição de interrupções intermitentes, processo e transmissor de radiodifusão em banda sobre canal, processo para receber um sinal de radiodifusão em banda sobre canal e receptor para um sinal de radiodifusão em banda sobre canal

Country Status (12)

Country Link
US (2) US6178317B1 (pt)
EP (1) EP1025663A1 (pt)
JP (1) JP3976087B2 (pt)
KR (1) KR100508577B1 (pt)
CN (1) CN1185815C (pt)
AU (1) AU752576B2 (pt)
BR (1) BRPI9812741B1 (pt)
CA (1) CA2303553C (pt)
ID (1) ID24754A (pt)
MX (1) MXPA00003407A (pt)
RU (1) RU2213422C2 (pt)
WO (1) WO1999020007A1 (pt)

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KR20010030977A (ko) 2001-04-16
US20010003089A1 (en) 2001-06-07
AU752576B2 (en) 2002-09-26
JP2001520479A (ja) 2001-10-30
CA2303553A1 (en) 1999-04-22
CA2303553C (en) 2010-01-05
WO1999020007A1 (en) 1999-04-22
US6178317B1 (en) 2001-01-23
CN1274495A (zh) 2000-11-22
JP3976087B2 (ja) 2007-09-12
KR100508577B1 (ko) 2005-08-17
BRPI9812741B1 (pt) 2016-08-23
ID24754A (id) 2000-08-03
CN1185815C (zh) 2005-01-19
AU1087499A (en) 1999-05-03
MXPA00003407A (es) 2002-04-24
RU2213422C2 (ru) 2003-09-27
US6901242B2 (en) 2005-05-31

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