JPS6349415B2 - - Google Patents

Info

Publication number
JPS6349415B2
JPS6349415B2 JP58162379A JP16237983A JPS6349415B2 JP S6349415 B2 JPS6349415 B2 JP S6349415B2 JP 58162379 A JP58162379 A JP 58162379A JP 16237983 A JP16237983 A JP 16237983A JP S6349415 B2 JPS6349415 B2 JP S6349415B2
Authority
JP
Japan
Prior art keywords
circuit
output
amplifier
transistor
current
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
JP58162379A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6053342A (ja
Inventor
Takeshi Kuwajima
Kyoshi Amasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP58162379A priority Critical patent/JPS6053342A/ja
Priority to US06/645,124 priority patent/US4612662A/en
Priority to DE3432175A priority patent/DE3432175A1/de
Priority to SE8404344A priority patent/SE450984B/sv
Publication of JPS6053342A publication Critical patent/JPS6053342A/ja
Publication of JPS6349415B2 publication Critical patent/JPS6349415B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • 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
    • 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
    • H04H40/63—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 separation improvements or adjustments
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stereo-Broadcasting Methods (AREA)
JP58162379A 1983-09-02 1983-09-02 制御回路 Granted JPS6053342A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP58162379A JPS6053342A (ja) 1983-09-02 1983-09-02 制御回路
US06/645,124 US4612662A (en) 1983-09-02 1984-08-28 Control circuit
DE3432175A DE3432175A1 (de) 1983-09-02 1984-08-31 Steuerschaltung
SE8404344A SE450984B (sv) 1983-09-02 1984-08-31 Reglerkrets for att reglera separationsforhallandet av fm-stereodemoduleringsutsignal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58162379A JPS6053342A (ja) 1983-09-02 1983-09-02 制御回路

Publications (2)

Publication Number Publication Date
JPS6053342A JPS6053342A (ja) 1985-03-27
JPS6349415B2 true JPS6349415B2 (US20080094685A1-20080424-C00004.png) 1988-10-04

Family

ID=15753454

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58162379A Granted JPS6053342A (ja) 1983-09-02 1983-09-02 制御回路

Country Status (4)

Country Link
US (1) US4612662A (US20080094685A1-20080424-C00004.png)
JP (1) JPS6053342A (US20080094685A1-20080424-C00004.png)
DE (1) DE3432175A1 (US20080094685A1-20080424-C00004.png)
SE (1) SE450984B (US20080094685A1-20080424-C00004.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202537A (ja) * 1985-03-06 1986-09-08 Clarion Co Ltd Ｆｍステレオ受信機におけるステレオ雑音低減回路
JPH0669150B2 (ja) * 1985-05-16 1994-08-31 クラリオン株式会社 Ｆｍ受信機
JPH088511B2 (ja) * 1987-01-23 1996-01-29 クラリオン株式会社 パルス性雑音除去装置
US4901350A (en) * 1989-04-20 1990-02-13 Delco Electronics Corporation Closed-loop audio attenuator
JP3802536B2 (ja) * 2004-02-20 2006-07-26 沖電気工業株式会社 オートゲインコントロール回路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823268A (en) * 1972-06-07 1974-07-09 Mc Intosh Labor Inc Dynamic stereo separation control
JPS5243303A (en) * 1975-10-01 1977-04-05 Pioneer Electronic Corp Reversion circuit of fm stereo
US3999132A (en) * 1975-10-31 1976-12-21 Motorola, Inc. Stereo inhibit circuit
JPS539403A (en) * 1976-07-14 1978-01-27 Pioneer Electronic Corp Fm stereophonic receiver
JPS5646346A (en) * 1979-09-21 1981-04-27 Hitachi Ltd Control system for fm stereo demodulation
US4390749A (en) * 1981-04-13 1983-06-28 Superscope, Inc. Noise control system for FM radio

Also Published As

Publication number Publication date
SE8404344L (sv) 1985-03-03
US4612662A (en) 1986-09-16
JPS6053342A (ja) 1985-03-27
SE8404344D0 (sv) 1984-08-31
DE3432175A1 (de) 1985-03-21
SE450984B (sv) 1987-09-07

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