DE3432175A1 - Steuerschaltung - Google Patents

Steuerschaltung

Info

Publication number
DE3432175A1
DE3432175A1 DE3432175A DE3432175A DE3432175A1 DE 3432175 A1 DE3432175 A1 DE 3432175A1 DE 3432175 A DE3432175 A DE 3432175A DE 3432175 A DE3432175 A DE 3432175A DE 3432175 A1 DE3432175 A1 DE 3432175A1
Authority
DE
Germany
Prior art keywords
circuit
control
current
amplifier
output signal
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.)
Ceased
Application number
DE3432175A
Other languages
German (de)
English (en)
Inventor
Kiyoshi Tokio/Tokyo Amazawa
Takeshi Kuwajima
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
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
NEC Corp
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 Clarion Co Ltd, NEC Corp filed Critical Clarion Co Ltd
Publication of DE3432175A1 publication Critical patent/DE3432175A1/de
Ceased 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)
DE3432175A 1983-09-02 1984-08-31 Steuerschaltung Ceased DE3432175A1 (de)

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 (1)

Publication Number Publication Date
DE3432175A1 true DE3432175A1 (de) 1985-03-21

Family

ID=15753454

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3432175A Ceased DE3432175A1 (de) 1983-09-02 1984-08-31 Steuerschaltung

Country Status (4)

Country Link
US (1) US4612662A (enExample)
JP (1) JPS6053342A (enExample)
DE (1) DE3432175A1 (enExample)
SE (1) SE450984B (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393842A3 (en) * 1989-04-20 1991-08-07 Delco Electronics Corporation Closed-loop audio attenuator

Families Citing this family (4)

* 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
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

Citations (3)

* 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
US4356350A (en) * 1979-09-21 1982-10-26 Hitachi, Ltd. FM Receiver
US4390749A (en) * 1981-04-13 1983-06-28 Superscope, Inc. Noise control system for FM radio

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (3)

* 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
US4356350A (en) * 1979-09-21 1982-10-26 Hitachi, Ltd. FM Receiver
US4390749A (en) * 1981-04-13 1983-06-28 Superscope, Inc. Noise control system for FM radio

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393842A3 (en) * 1989-04-20 1991-08-07 Delco Electronics Corporation Closed-loop audio attenuator

Also Published As

Publication number Publication date
SE8404344L (sv) 1985-03-03
US4612662A (en) 1986-09-16
SE8404344D0 (sv) 1984-08-31
SE450984B (sv) 1987-09-07
JPS6349415B2 (enExample) 1988-10-04
JPS6053342A (ja) 1985-03-27

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8131 Rejection