WO2008146431A1 - デジタル放送受信装置 - Google Patents

デジタル放送受信装置 Download PDF

Info

Publication number
WO2008146431A1
WO2008146431A1 PCT/JP2008/000439 JP2008000439W WO2008146431A1 WO 2008146431 A1 WO2008146431 A1 WO 2008146431A1 JP 2008000439 W JP2008000439 W JP 2008000439W WO 2008146431 A1 WO2008146431 A1 WO 2008146431A1
Authority
WO
WIPO (PCT)
Prior art keywords
peak
judgment
outputs
advance
digital broadcast
Prior art date
Application number
PCT/JP2008/000439
Other languages
English (en)
French (fr)
Inventor
Satoshi Suzuki
Mitsuru Takeuchi
Original Assignee
Mitsubishi Electric Corporation
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 Mitsubishi Electric Corporation filed Critical Mitsubishi Electric Corporation
Priority to EP08720325.3A priority Critical patent/EP2151925B1/en
Priority to CN2008800166635A priority patent/CN101682347B/zh
Priority to JP2009516158A priority patent/JP4637265B2/ja
Priority to US12/530,895 priority patent/US8036324B2/en
Publication of WO2008146431A1 publication Critical patent/WO2008146431A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3078—Circuits generating control signals for digitally modulated signals
    • 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
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/38—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space
    • H04H60/41—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas
    • 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
    • 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
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • 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
    • H04N5/52—Automatic gain control
    • 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
    • H04N21/43—Processing 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

　受信した信号の電力値が一定となるよう利得制御を行い、前記利得制御による自動ゲイン制御値が予め記憶された閾値より大きいか否かを判定して、該判定結果を出力する信号レベル検出回路と、前記受信した信号の帯域内における電力値のピークを検出して該検出したピークを出力するピーク検出部と、前記ピーク検出部から出力されたピークに、予め記憶された閾値より大きいピークが存在するか否かを判定して該判定結果を出力する異常ピーク判定部と、前記ピーク検出部から出力されたピークのうち、特定周波数帯域において、予め記憶された閾値を超えるものが存在するか否かを判定して該判定結果を出力する特定ピーク判定部と、所定帯域内の全電力の合計値が、予め記憶された閾値より大きいか否かを判定して該判定結果を出力する所定帯域内電力判定部とを備え、前記信号レベル検出回路、前記異常ピーク判定部、前記特定ピーク判定部、および前記所定帯域内電力判定部からそれぞれ出力される判定結果に基づき、受信中の信号がデジタル放送信号であるか否かを判定することを特徴とする。
PCT/JP2008/000439 2007-05-30 2008-03-04 デジタル放送受信装置 WO2008146431A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08720325.3A EP2151925B1 (en) 2007-05-30 2008-03-04 Digital broadcast receiver
CN2008800166635A CN101682347B (zh) 2007-05-30 2008-03-04 数字广播接收装置
JP2009516158A JP4637265B2 (ja) 2007-05-30 2008-03-04 デジタル放送受信装置
US12/530,895 US8036324B2 (en) 2007-05-30 2008-03-04 Digital broadcasting receiving apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007144008 2007-05-30
JP2007-144008 2007-05-30

Publications (1)

Publication Number Publication Date
WO2008146431A1 true WO2008146431A1 (ja) 2008-12-04

Family

ID=40074709

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000439 WO2008146431A1 (ja) 2007-05-30 2008-03-04 デジタル放送受信装置

Country Status (5)

Country Link
US (1) US8036324B2 (ja)
EP (1) EP2151925B1 (ja)
JP (1) JP4637265B2 (ja)
CN (1) CN101682347B (ja)
WO (1) WO2008146431A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8385362B2 (en) * 2009-01-09 2013-02-26 Samsung Electronics Co., Ltd. Method and system for contention-based medium access schemes for directional wireless transmission with asymmetric antenna system (AAS) in wireless communication systems
US9628122B1 (en) * 2016-07-25 2017-04-18 The Aerospace Corporation Circuits and methods for reducing interference that spectrally overlaps a desired signal based on dynamic gain control and/or equalization
JP2020072463A (ja) * 2018-11-02 2020-05-07 パナソニックＩｐマネジメント株式会社 復調装置、受信装置および復調方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0938199A2 (en) 1998-02-19 1999-08-25 Fujitsu Ten Limited Means for determining available reception frequencies in a receiver for the reception of digital broadcasts
JP2002359569A (ja) * 2001-05-30 2002-12-13 Kenwood Corp 放送受信装置
JP2003069907A (ja) 2001-08-24 2003-03-07 Matsushita Electric Ind Co Ltd 地上デジタル放送受信装置
JP2003234977A (ja) * 2002-02-12 2003-08-22 Pioneer Electronic Corp Ａｇｃ機能付き受信装置
JP2005005819A (ja) * 2003-06-10 2005-01-06 Alpine Electronics Inc ラジオ受信機
JP2006024994A (ja) 2004-07-06 2006-01-26 Matsushita Electric Ind Co Ltd アナログ／デジタル放送受信機
JP2006115204A (ja) * 2004-10-14 2006-04-27 Mitsubishi Electric Corp デジタル放送受信装置
EP1689139A2 (en) 2005-02-03 2006-08-09 Matsushita Electric Industrial Co., Ltd. Broadcast interference elimination in OFDM receiving systems
JP2006352674A (ja) * 2005-06-17 2006-12-28 Mitsubishi Electric Corp 受信装置
WO2007047376A2 (en) 2005-10-14 2007-04-26 Ati Technologies, Inc. Rapid channel signal identification

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3130752B2 (ja) * 1995-02-24 2001-01-31 株式会社東芝 Ｏｆｄｍ伝送受信方式及び送受信装置
JP3511798B2 (ja) * 1996-05-08 2004-03-29 三菱電機株式会社 ディジタル放送受信機
JP3689986B2 (ja) * 1996-06-28 2005-08-31 ソニー株式会社 デジタル衛星放送受信機及びそのアンテナレベル表示方法
JP3538056B2 (ja) 1999-02-17 2004-06-14 株式会社ケンウッド ディジタルテレビ放送受信用選局装置、受信装置及び選局方法
CN1187920C (zh) * 1999-03-10 2005-02-02 索尼公司 数字广播接收装置
JP2000278665A (ja) * 1999-03-26 2000-10-06 Sony Corp 受信装置および方法、並びに提供媒体
JP4123320B2 (ja) * 1999-09-17 2008-07-23 ソニー株式会社 受信機およびそのｉｃ
US7203158B2 (en) * 2000-12-06 2007-04-10 Matsushita Electric Industrial Co., Ltd. OFDM signal transmission system, portable terminal, and e-commerce system
JP2003037516A (ja) * 2001-07-23 2003-02-07 Funai Electric Co Ltd 自動利得制御機能を有する放送受信装置
JP2003234975A (ja) 2002-02-08 2003-08-22 Nippon Television Network Corp 放送信号識別装置とその方法
JP3715587B2 (ja) * 2002-04-30 2005-11-09 株式会社東芝 デジタル放送受信装置の制御方法
CN100372238C (zh) * 2004-03-31 2008-02-27 清华大学 时域同步正交频分复用接收机***
JP4660127B2 (ja) 2004-06-23 2011-03-30 富士通テン株式会社 放送チャンネル検出装置および受信機
JP2006352488A (ja) 2005-06-15 2006-12-28 Nec Corp デジタル放送受信機、放送方式判定方法及び放送方式判定プログラム

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0938199A2 (en) 1998-02-19 1999-08-25 Fujitsu Ten Limited Means for determining available reception frequencies in a receiver for the reception of digital broadcasts
JP2002359569A (ja) * 2001-05-30 2002-12-13 Kenwood Corp 放送受信装置
JP2003069907A (ja) 2001-08-24 2003-03-07 Matsushita Electric Ind Co Ltd 地上デジタル放送受信装置
JP2003234977A (ja) * 2002-02-12 2003-08-22 Pioneer Electronic Corp Ａｇｃ機能付き受信装置
JP2005005819A (ja) * 2003-06-10 2005-01-06 Alpine Electronics Inc ラジオ受信機
JP2006024994A (ja) 2004-07-06 2006-01-26 Matsushita Electric Ind Co Ltd アナログ／デジタル放送受信機
JP2006115204A (ja) * 2004-10-14 2006-04-27 Mitsubishi Electric Corp デジタル放送受信装置
EP1689139A2 (en) 2005-02-03 2006-08-09 Matsushita Electric Industrial Co., Ltd. Broadcast interference elimination in OFDM receiving systems
JP2006352674A (ja) * 2005-06-17 2006-12-28 Mitsubishi Electric Corp 受信装置
WO2007047376A2 (en) 2005-10-14 2007-04-26 Ati Technologies, Inc. Rapid channel signal identification

Also Published As

Publication number Publication date
EP2151925B1 (en) 2018-04-25
EP2151925A4 (en) 2013-07-10
US20100091917A1 (en) 2010-04-15
CN101682347B (zh) 2012-11-21
JP4637265B2 (ja) 2011-02-23
US8036324B2 (en) 2011-10-11
JPWO2008146431A1 (ja) 2010-08-19
EP2151925A1 (en) 2010-02-10
CN101682347A (zh) 2010-03-24

Similar Documents

Publication Publication Date Title
WO2008061044A3 (en) Systems and methods for detecting the presence of a transmission signal in a wireless channel
WO2011073859A3 (en) Defining adaptive detection thresholds
WO2004017536A3 (en) Dynamic frequency selection and radar detection with a wireless lan
WO2009100099A3 (en) System and method for station detection and seek in a radio receiver
WO2008005583A3 (en) System and method for anticipatory receiver switching based on signal quality estimation
WO2008094283A3 (en) System, method, and computer-readable medium for detection and avoidance of victim services in ultra-wideband systems
WO2004075423A3 (en) Multimode background scans of different communication systems on similar frequencies
WO2008133298A1 (ja) 受信制御方法および無線通信装置
WO2006090337A3 (en) Method and apparatus for synchronizing wireless receiver
WO2007060504A3 (en) Interoperability improvement in terminals having a transmitter interfering with a receiver
WO2004077847A3 (en) Method and apparatus for selective disregard of co-channel transmissions on a medium
WO2011006585A3 (en) Communications system using adaptive frequency notching
GB2467282A (en) Power control in a wireless communication system
WO2012160035A3 (en) Processing audio signals
WO2007108922A3 (en) Signal jamming avoidance method for a frequency hopping communication system
US20090286498A1 (en) Antenna diversity receiver and antenna switching control method therefor
JP2006121146A5 (ja)
WO2009148220A3 (en) Cognitive radio communication system recognizing interference based on known signal
WO2013032285A3 (en) Multipath mitigation in positioning systems
WO2004092929A3 (en) Methods for controlling apparatuses having an emergency alert function
WO2010133225A3 (de) Verfahren zur standortüberprüfung einer femtozelle mittels rundfunk- oder pilotfunksignalsender
WO2008146431A1 (ja) デジタル放送受信装置
WO2008142974A1 (ja) Ｏｆｄｍａ受信装置およびｏｆｄｍａ受信方法
WO2009034606A1 (ja) 無線通信システムの通信制御方法および無線受信装置
TW200631315A (en) Channel detection device and tuner inspection device equipped with same

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880016663.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08720325

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009516158

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 12530895

Country of ref document: US

Ref document number: 2008720325

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE