JPS56149128A - Radio receiver for vehicle - Google Patents

Radio receiver for vehicle

Info

Publication number
JPS56149128A
JPS56149128A JP5225180A JP5225180A JPS56149128A JP S56149128 A JPS56149128 A JP S56149128A JP 5225180 A JP5225180 A JP 5225180A JP 5225180 A JP5225180 A JP 5225180A JP S56149128 A JPS56149128 A JP S56149128A
Authority
JP
Japan
Prior art keywords
signal
agc
component
lowering
electric field
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.)
Pending
Application number
JP5225180A
Other languages
Japanese (ja)
Inventor
Masami Kubota
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP5225180A priority Critical patent/JPS56149128A/en
Publication of JPS56149128A publication Critical patent/JPS56149128A/en
Pending 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
    • H04H40/72—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
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers

Abstract

PURPOSE:To perform excellent broadcast reception by AM-detecting an FMIF signal after AGC amplification, by detecting and eliminating echo distortion, and by raising a received electric field according to the lowering of the electric field detected from an AGC control voltage. CONSTITUTION:If echo distortion is generated owing to multipath reception, an AM component is brought to mix in an IF signal from front end 2. Then, the IF signal is AGC-amplified by IF amplifier 8 to constant amplitude; and AM detector 10 detects its full-wave signal component and AM detector 12 detects its half-wave component. Then, high-cut control circuit 16 and high-cut filter 17 eliminate noise components included in the high frequency range of the FM detection output. So that fluctuations of the output voltage of amplifier 8 will be suppressed, AGC voltage VC decreasing according to the lowering of the signal level is generated and then phase-inverted 14 to output electric-field decrease signal e2 which rises according to the lowering of the electric field. Thus, the noise component is eliminated to perform excellent broadcast reception.
JP5225180A 1980-04-22 1980-04-22 Radio receiver for vehicle Pending JPS56149128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5225180A JPS56149128A (en) 1980-04-22 1980-04-22 Radio receiver for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5225180A JPS56149128A (en) 1980-04-22 1980-04-22 Radio receiver for vehicle

Publications (1)

Publication Number Publication Date
JPS56149128A true JPS56149128A (en) 1981-11-18

Family

ID=12909509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5225180A Pending JPS56149128A (en) 1980-04-22 1980-04-22 Radio receiver for vehicle

Country Status (1)

Country Link
JP (1) JPS56149128A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58147256A (en) * 1982-02-26 1983-09-02 Pioneer Electronic Corp Fm receiver
US5379449A (en) * 1992-11-23 1995-01-03 Ford Motor Company Automotive radio employing multipath correction strategy based on vehicle speed

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337411B2 (en) * 1975-12-24 1978-10-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337411B2 (en) * 1975-12-24 1978-10-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58147256A (en) * 1982-02-26 1983-09-02 Pioneer Electronic Corp Fm receiver
JPH0239897B2 (en) * 1982-02-26 1990-09-07 Pioneer Electronic Corp
US5379449A (en) * 1992-11-23 1995-01-03 Ford Motor Company Automotive radio employing multipath correction strategy based on vehicle speed

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