PL2398170T3 - Transmisje modulowane częstotliwościowo - Google Patents

Transmisje modulowane częstotliwościowo

Info

Publication number
PL2398170T3
PL2398170T3 PL11167621T PL11167621T PL2398170T3 PL 2398170 T3 PL2398170 T3 PL 2398170T3 PL 11167621 T PL11167621 T PL 11167621T PL 11167621 T PL11167621 T PL 11167621T PL 2398170 T3 PL2398170 T3 PL 2398170T3
Authority
PL
Poland
Prior art keywords
frequency modulated
modulated broadcasts
broadcasts
frequency
modulated
Prior art date
Application number
PL11167621T
Other languages
English (en)
Inventor
Neil Briffett
Original Assignee
Nokia Technologies Oy
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 Nokia Technologies Oy filed Critical Nokia Technologies Oy
Publication of PL2398170T3 publication Critical patent/PL2398170T3/pl

Links

Classifications

    • 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
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/344—Muting responsive to the amount of noise (noise squelch)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
    • H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
    • 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
    • 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
    • H04B1/16—Circuits
    • 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
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/16—Frequency regulation arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/22—Automatic control in amplifiers having discharge tubes
    • H03G3/26—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise, e.g. squelch systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
PL11167621T 2010-06-17 2011-05-26 Transmisje modulowane częstotliwościowo PL2398170T3 (pl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1010167.3A GB2481237A (en) 2010-06-17 2010-06-17 Protecting a speaker arrangement against over-modulated broadcasts
EP11167621.9A EP2398170B1 (en) 2010-06-17 2011-05-26 Frequency modulated broadcasts

Publications (1)

Publication Number Publication Date
PL2398170T3 true PL2398170T3 (pl) 2019-07-31

Family

ID=42471793

Family Applications (1)

Application Number Title Priority Date Filing Date
PL11167621T PL2398170T3 (pl) 2010-06-17 2011-05-26 Transmisje modulowane częstotliwościowo

Country Status (4)

Country Link
US (1) US8588718B2 (pl)
EP (1) EP2398170B1 (pl)
GB (1) GB2481237A (pl)
PL (1) PL2398170T3 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011087745A1 (de) * 2011-12-05 2013-06-06 Sennheiser Electronic Gmbh & Co. Kg Verfahren zum Bestimmen einer Übertragungsqualität beim Empfangen von Audiosignalen
CN105376004B (zh) * 2014-07-31 2018-07-10 展讯通信（上海）有限公司 一种自适应搜台装置及方法以及调频收音机
CN112332932B (zh) * 2020-10-30 2023-03-14 展讯半导体(成都)有限公司 终端fm功能的测试方法及系统

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332978A (en) * 1977-03-21 1982-06-01 The Magnavox Consumer Electronics Co. Low frequency AM stereophonic broadcast and receiving apparatus
US4225751A (en) * 1978-12-18 1980-09-30 Harris Corporation Variable-angle, multiple channel amplitude modulation system
US4323731A (en) * 1978-12-18 1982-04-06 Harris Corporation Variable-angle, multiple channel amplitude modulation system
US4329714A (en) * 1980-11-26 1982-05-11 Rca Corporation Audio distortion eliminator
DE3047386A1 (de) * 1980-12-16 1982-07-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Empfaenger zum empfang von am-signalen, deren traeger frequenz- oder phasenmoduliert ist
JPS57121345A (en) * 1981-01-20 1982-07-28 Sanyo Electric Co Ltd Pulse noise eliminating circuit
JPH01296704A (ja) * 1988-05-24 1989-11-30 Matsushita Electric Ind Co Ltd Ｆｍ復調装置
US5036543A (en) * 1989-06-30 1991-07-30 Pioneer Electronic Corporation Noise suppression apparatus for FM receiver
JPH04134928A (ja) * 1990-09-26 1992-05-08 Pioneer Electron Corp ノイズ除去回路
KR920008357Y1 (ko) * 1990-10-11 1992-11-20 삼성전자 주식회사 스테레오 고주파변조기
US5666658A (en) * 1991-03-07 1997-09-09 Recoton Corporation Wireless signal transmission system, method and apparatus
JPH07231268A (ja) * 1993-12-21 1995-08-29 Toshiba Corp Ｆｍチューナにおけるパルスノイズキャンセラ
DE19722385C2 (de) * 1997-05-28 2002-11-07 Grundig Ag Verfahren zur Erkennung von Multipathstörungen beim FM-Rundfunkempfang und Schaltungsanordnung zur Durchführung des Verfahrens
JP2000115002A (ja) * 1998-10-07 2000-04-21 Kenwood Corp ラジオ受信機
JP3742748B2 (ja) * 2000-06-23 2006-02-08 アルパイン株式会社 Ｆｍ受信機
JP4174339B2 (ja) * 2003-02-10 2008-10-29 アルパイン株式会社 Ｆｍ受信機
EP1708370A3 (en) * 2005-03-28 2009-05-20 Pioneer Corporation Noise removal device
JP4230470B2 (ja) * 2005-03-31 2009-02-25 富士通テン株式会社 軽減装置および方法、ならびに受信装置
JP2007201838A (ja) * 2006-01-27 2007-08-09 Matsushita Electric Ind Co Ltd 過変調検出方法および過変調検出装置とｆｍ受信機
JP2009278525A (ja) * 2008-05-16 2009-11-26 Nec Electronics Corp アンテナダイバーシティ受信装置とそのアンテナ切替制御方法
US9350393B2 (en) * 2009-03-16 2016-05-24 Texas Instruments Incorporated De-emphasis filtering audio signals in response to composite control signal
JP2011188467A (ja) * 2010-02-15 2011-09-22 Fujitsu Ten Ltd 放送受信装置及び、放送受信装置の雑音有無判断方法

Also Published As

Publication number Publication date
US8588718B2 (en) 2013-11-19
EP2398170A3 (en) 2013-05-01
US20110312291A1 (en) 2011-12-22
EP2398170A2 (en) 2011-12-21
GB2481237A (en) 2011-12-21
EP2398170B1 (en) 2019-02-27
GB201010167D0 (en) 2010-07-21

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