BR0008530A - Aparelho de difusão digital - Google Patents

Aparelho de difusão digital

Info

Publication number
BR0008530A
BR0008530A BR0008530-8A BR0008530A BR0008530A BR 0008530 A BR0008530 A BR 0008530A BR 0008530 A BR0008530 A BR 0008530A BR 0008530 A BR0008530 A BR 0008530A
Authority
BR
Brazil
Prior art keywords
signals
frequencies
sub
broadcast
channels
Prior art date
Application number
BR0008530-8A
Other languages
English (en)
Other versions
BR0008530B1 (pt
Inventor
Yasunari Ikeda
Toshihisa Hyakudai
Takahiro Okada
Tamotsu Ikeda
Toru Kuroda
Naohiko Iai
Kenichi Tsuchida
Makoto Sasaki
Original Assignee
Sony Corp
Nippon Kyokai
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 Sony Corp, Nippon Kyokai filed Critical Sony Corp
Publication of BR0008530A publication Critical patent/BR0008530A/pt
Publication of BR0008530B1 publication Critical patent/BR0008530B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2618—Reduction thereof using auxiliary subcarriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/71—Wireless systems
    • H04H20/72—Wireless systems of terrestrial networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Radio Relay Systems (AREA)

Abstract

"APARELHO DE DIFUSãO DIGITAL". Para se fornecer um aparelho de difusão digital capaz de suprimir um aumento de uma faixa dinâmica de sinais pelo controle de fases de portador dos sinais na difusão terrestre digital de acordo com as freq³ências dos canais de difusão. Um circuito de intercalação de freq³ência intercala em freq³ência os sinais principais gerados de acordo com os dados de som pelos parâmetros determinados de acordo com as freq³ências dos canais de difusão, um circuito de geração de sub-sinal gera sub-sinais para o controle de difusão incluindo sinais piloto, circuitos de mapeamento modulam os sub-sinais utilizando seq³ências pseudo-randórmicas geradas com base nos valores iniciais dos códigos randómicos determinados de acordo com as freq³ências dos canais de difusão, e o sinais principais intercalados em freq³ência e os sub-sinais modulados pelos circuitos de mapeamento são modulados OFDM, convertidos em freq³ências dos canais de difusão, então difundidos de uma antena, de forma que o aumento de uma faixa dinâmica de sinais de difusão possa ser suprimido.
BRPI0008530-8A 1999-02-25 2000-02-25 Aparelho de difusão digital BR0008530B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4896199 1999-02-25
JP11/48961 1999-02-25
PCT/JP2000/001091 WO2000051275A1 (fr) 1999-02-25 2000-02-25 Appareil de radiodiffusion numerique

Publications (2)

Publication Number Publication Date
BR0008530A true BR0008530A (pt) 2001-11-06
BR0008530B1 BR0008530B1 (pt) 2014-02-04

Family

ID=12817890

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0008530-8A BR0008530B1 (pt) 1999-02-25 2000-02-25 Aparelho de difusão digital

Country Status (6)

Country Link
US (1) US6973118B1 (pt)
CN (1) CN1187921C (pt)
AU (1) AU2692300A (pt)
BR (1) BR0008530B1 (pt)
HK (1) HK1048401B (pt)
WO (1) WO2000051275A1 (pt)

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US5619501A (en) * 1994-04-22 1997-04-08 Thomson Consumer Electronics, Inc. Conditional access filter as for a packet video signal inverse transport system
JP2002084252A (ja) * 2000-09-07 2002-03-22 Sony Corp Ｏｆｄｍ変調装置、ｏｆｄｍ復調装置及びｏｆｄｍ送受信システム
JP3712962B2 (ja) * 2001-07-24 2005-11-02 株式会社日立国際電気 送信装置および伝送装置および受信装置および信号構成
JP3963737B2 (ja) 2002-02-28 2007-08-22 松下電器産業株式会社 マルチキャリア信号生成方法、無線送信装置および無線受信装置
KR100790114B1 (ko) * 2002-03-16 2007-12-31 삼성전자주식회사 직교주파수 분할다중 접속 시스템에서 적응적 파일럿반송파 할당 방법 및 장치
CN1669257B (zh) 2002-07-16 2012-08-29 松下电器产业株式会社 通信方法和使用该通信方法的发送装置和接收装置
KR100461542B1 (ko) * 2002-12-26 2004-12-17 한국전자통신연구원 다중 주파수 대역을 이용한 디지탈 방송 송/수신 장치 및그 방법
US8208499B2 (en) * 2003-06-13 2012-06-26 Dtvg Licensing, Inc. Framing structure for digital broadcasting and interactive services
US7369633B2 (en) * 2003-06-13 2008-05-06 The Directv Group, Inc. Method and apparatus for providing carrier synchronization in digital broadcast and interactive systems
JP2005136770A (ja) * 2003-10-31 2005-05-26 Leader Electronics Corp デジタル放送用信号発生器
CN100356787C (zh) * 2004-03-29 2007-12-19 上海交通大学 数字电视地面广播传输中单频网的信号馈送方式
CN1333600C (zh) * 2004-03-29 2007-08-22 上海交通大学 数字电视地面广播混合传输系统的信道编码方法
US8391410B2 (en) * 2004-07-29 2013-03-05 Qualcomm Incorporated Methods and apparatus for configuring a pilot symbol in a wireless communication system
US20080317142A1 (en) * 2005-07-29 2008-12-25 Qualcomm Incorporated System and method for frequency diversity
AU2005267809B2 (en) * 2004-07-29 2010-02-11 Qualcomm Incorporated System and method for interleaving
US9246728B2 (en) 2004-07-29 2016-01-26 Qualcomm Incorporated System and method for frequency diversity
US20070081484A1 (en) * 2004-07-29 2007-04-12 Wang Michael M Methods and apparatus for transmitting a frame structure in a wireless communication system
US9391751B2 (en) * 2005-07-29 2016-07-12 Qualcomm Incorporated System and method for frequency diversity
US9042212B2 (en) * 2005-07-29 2015-05-26 Qualcomm Incorporated Method and apparatus for communicating network identifiers in a communication system
EP1958408B1 (en) * 2005-12-06 2019-11-06 Microsoft Technology Licensing, LLC Apparatus and method for transmitting data using a plurality of carriers
CN101018223B (zh) * 2006-10-22 2011-03-23 北京创毅视讯科技有限公司 一种移动数字多媒体广播信号传输系统和方法
JP4482834B2 (ja) * 2008-03-13 2010-06-16 ソニー株式会社 変調装置および方法、復調装置および方法、プログラム、並びに記録媒体
JP5083026B2 (ja) * 2008-05-15 2012-11-28 富士通セミコンダクター株式会社 デジタル放送受信機、およびデジタル放送受信方法
CN102217306B (zh) * 2008-11-13 2014-04-30 Lg电子株式会社 用于发送和接收信号的装置以及用于发送和接收信号的方法
US8982686B2 (en) * 2010-06-07 2015-03-17 Qualcomm Incorporated Communication devices for generating and using a matrix-mapped sequence
CN103701561B (zh) * 2013-12-02 2015-12-30 清华大学 一种适用于延迟敏感业务的编码调制方法与系统
CN105323012B (zh) * 2014-07-14 2019-07-02 宏碁股份有限公司 声音数据传输系统与声音数据传输方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2658017B1 (fr) * 1990-02-06 1992-06-05 France Etat Procede de diffusion de donnees numeriques, notamment pour la radiodiffusion a haut debit vers des mobiles, a entrelacement temps-frequence et aide a l'acquisition de la commande automatique de frequence, et recepteur correspondant.
GB9218874D0 (en) * 1992-09-07 1992-10-21 British Broadcasting Corp Improvements relating to the transmission of frequency division multiplex signals
DE19700303B4 (de) * 1997-01-08 2005-11-03 Deutsches Zentrum für Luft- und Raumfahrt e.V. Funkübertragungsverfahren für digitale Multimediatensignale zwischen Teilnehmerstationen in einem lokalen Netz
TW443059B (en) 1997-07-01 2001-06-23 Advanced Digital Television Br Orthogonal frequency division multiplex transmission method and transmitting apparatus and receiving apparatus therefor
US6256508B1 (en) * 1998-02-27 2001-07-03 Mitsubishi Denki Kabushiki Kaisha Simultaneous broadcasting system, transmitter and receiver therefor
US6609039B1 (en) * 1998-07-27 2003-08-19 Neil Charles Schoen Simultaneous multi-user audio re-transmission digital radio module
JP2990182B1 (ja) * 1998-09-30 1999-12-13 株式会社次世代デジタルテレビジョン放送システム研究所 地上デジタル放送伝送システム

Also Published As

Publication number Publication date
BR0008530B1 (pt) 2014-02-04
US6973118B1 (en) 2005-12-06
HK1048401B (zh) 2005-09-02
CN1187921C (zh) 2005-02-02
HK1048401A1 (en) 2003-03-28
WO2000051275A1 (fr) 2000-08-31
AU2692300A (en) 2000-09-14
CN1345493A (zh) 2002-04-17

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 04/02/2014, OBSERVADAS AS CONDICOES LEGAIS.