JPH042019B2 - - Google Patents

Info

Publication number
JPH042019B2
JPH042019B2 JP59082447A JP8244784A JPH042019B2 JP H042019 B2 JPH042019 B2 JP H042019B2 JP 59082447 A JP59082447 A JP 59082447A JP 8244784 A JP8244784 A JP 8244784A JP H042019 B2 JPH042019 B2 JP H042019B2
Authority
JP
Japan
Prior art keywords
signal
circuit
sub
noise
hold
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
JP59082447A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60226238A (ja
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 filed Critical
Priority to JP59082447A priority Critical patent/JPS60226238A/ja
Priority to US06/726,753 priority patent/US4680793A/en
Publication of JPS60226238A publication Critical patent/JPS60226238A/ja
Publication of JPH042019B2 publication Critical patent/JPH042019B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H04H40/54—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 generating subcarriers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H03D1/2209—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders
    • H03D1/2236—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders using a phase locked loop
    • 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
    • H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
    • H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal
    • 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
    • H04H40/72—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 for noise suppression
    • 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
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)
JP59082447A 1984-04-24 1984-04-24 雑音除去回路 Granted JPS60226238A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59082447A JPS60226238A (ja) 1984-04-24 1984-04-24 雑音除去回路
US06/726,753 US4680793A (en) 1984-04-24 1985-04-24 Noise eliminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59082447A JPS60226238A (ja) 1984-04-24 1984-04-24 雑音除去回路

Publications (2)

Publication Number Publication Date
JPS60226238A JPS60226238A (ja) 1985-11-11
JPH042019B2 true JPH042019B2 (en]) 1992-01-16

Family

ID=13774774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59082447A Granted JPS60226238A (ja) 1984-04-24 1984-04-24 雑音除去回路

Country Status (2)

Country Link
US (1) US4680793A (en])
JP (1) JPS60226238A (en])

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960003036B1 (ko) * 1987-04-17 1996-03-02 상요덴기 가부시기가이샤 텔레비젼 음성 다중신호를 위한 복조회로
US4975953A (en) * 1989-01-13 1990-12-04 Delco Electronics Corporation Combined deemphasis circuit and noise blanker
US5253299A (en) * 1989-02-03 1993-10-12 Pioneer Electronic Corporation Noise reduction apparatus in an FM stereo tuner
US5067157A (en) * 1989-02-03 1991-11-19 Pioneer Electronic Corporation Noise reduction apparatus in an FM stereo tuner
US5261004A (en) * 1991-12-17 1993-11-09 Delco Electronics Corporation Noise blanking circuit for AM stero
US7406302B1 (en) 2003-12-15 2008-07-29 Marvell International, Inc. Digital FM stereo receiver architecture
BRPI0610530A2 (pt) * 2005-04-04 2010-06-29 That Corp sistema de controle e de estimativa de qualidade de sinal
EP2800279B1 (en) * 2013-05-01 2018-04-25 Analog Devices Global Unlimited Company Demodulation of attenuated FM modulated audio signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1144081A (en) * 1979-04-27 1983-04-05 Sadao Kondo Noise removing apparatus
US4574390A (en) * 1983-03-26 1986-03-04 Victor Company Of Japan, Limited Noise reduction for stereophonic FM signals by high-speed sampling and linear interpolation

Also Published As

Publication number Publication date
US4680793A (en) 1987-07-14
JPS60226238A (ja) 1985-11-11

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees