JPS57212830A - Radio receiver for car - Google Patents

Radio receiver for car

Info

Publication number
JPS57212830A
JPS57212830A JP9747481A JP9747481A JPS57212830A JP S57212830 A JPS57212830 A JP S57212830A JP 9747481 A JP9747481 A JP 9747481A JP 9747481 A JP9747481 A JP 9747481A JP S57212830 A JPS57212830 A JP S57212830A
Authority
JP
Japan
Prior art keywords
capacitor
diode
detection
change
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.)
Pending
Application number
JP9747481A
Other languages
Japanese (ja)
Inventor
Masami Kubota
Atsumi Hashimoto
Hiroshige Fukuhara
Masanori Hamada
Teruo Yumoto
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
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
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 Clarion Co Ltd, Nissan Motor Co Ltd filed Critical Clarion Co Ltd
Priority to JP9747481A priority Critical patent/JPS57212830A/en
Publication of JPS57212830A publication Critical patent/JPS57212830A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To prevent the degradation of a sound quality through the operation of noise elimination regardless of no multipath reception, by avoiding high-frequency attenuation until the AM detection value of an FM intermediate frequency signal exceeds a prescribed value. CONSTITUTION:In a multipath detection circuit 8, a diode D3 is connected between a capacitor C4 and a resistor R3. If an IF output signal ei has an amplitude change due to the change in the rate of change of FM modulation factor, the AM detection is made by diodes D1 and D2, a voltage charged in the capacitor C4 is at a forward voltage VD or below of te diode D3, then the diode D3 is turned off, no charging voltage of the capacitor C4 is applied between resistors R3 and R4, a control signal e0 is zero volt, and a high cut-off circuit 5 does not attenuate high frequencies of the detected signal and an audio output is made from a speaker 7 as it is.
JP9747481A 1981-06-25 1981-06-25 Radio receiver for car Pending JPS57212830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9747481A JPS57212830A (en) 1981-06-25 1981-06-25 Radio receiver for car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9747481A JPS57212830A (en) 1981-06-25 1981-06-25 Radio receiver for car

Publications (1)

Publication Number Publication Date
JPS57212830A true JPS57212830A (en) 1982-12-27

Family

ID=14193290

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9747481A Pending JPS57212830A (en) 1981-06-25 1981-06-25 Radio receiver for car

Country Status (1)

Country Link
JP (1) JPS57212830A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098732A (en) * 1983-11-04 1985-06-01 Akiyufueezu Kk Multi-path distortion suppressing circuit
DE3607433A1 (en) * 1985-03-06 1986-09-11 Clarion Co., Ltd., Tokio/Tokyo CONTROL VOLTAGE SWITCHING

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134554A (en) * 1979-04-06 1980-10-20 Matsushita Electric Ind Co Ltd Radio receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134554A (en) * 1979-04-06 1980-10-20 Matsushita Electric Ind Co Ltd Radio receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098732A (en) * 1983-11-04 1985-06-01 Akiyufueezu Kk Multi-path distortion suppressing circuit
DE3607433A1 (en) * 1985-03-06 1986-09-11 Clarion Co., Ltd., Tokio/Tokyo CONTROL VOLTAGE SWITCHING

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