JPS5648739A - Am stereophonic receiver - Google Patents

Am stereophonic receiver

Info

Publication number
JPS5648739A
JPS5648739A JP12590579A JP12590579A JPS5648739A JP S5648739 A JPS5648739 A JP S5648739A JP 12590579 A JP12590579 A JP 12590579A JP 12590579 A JP12590579 A JP 12590579A JP S5648739 A JPS5648739 A JP S5648739A
Authority
JP
Japan
Prior art keywords
signal
output
circuit
muting
generate
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.)
Granted
Application number
JP12590579A
Other languages
Japanese (ja)
Other versions
JPS6239576B2 (en
Inventor
Yujiro Saito
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP12590579A priority Critical patent/JPS5648739A/en
Publication of JPS5648739A publication Critical patent/JPS5648739A/en
Publication of JPS6239576B2 publication Critical patent/JPS6239576B2/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
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To eliminate burstlike noises generated in detuning by generating a muting signal from a pulse output of narrow width centering on a tuning frequency formed from an FM demodulation output and a pilot detection output. CONSTITUTION:The sum signal of an amplitude-modulated right signal and left signal is AM-detected 3 and inputted to matrix circuit 6. A frequency-modulated right-left difference signal and pilot signal PP are FM-demodulated 5 and its output enters circuit 6, which separates right and left signals mutually and outputs them. Signal PP is selected by BPF33 and FM-demodulation output Ss is inputted to waveform shaping circuit 22 to generate waveform-shaping output PA of narrow width centering on tuning frequency f0. Detection output SI from detector 3 and signal PA are AND-ed by AND circuit 23 to generate pulse output PN and signal PN and signal PP are NAND-ed by NAND circuit 24 to generate muting signal SM, with which muting element QM is controlled. Therefore, only when signal PP and signal SS are obtained, the right-left difference signal is outputted and burstlike noises in detuning are muted.
JP12590579A 1979-09-28 1979-09-28 Am stereophonic receiver Granted JPS5648739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12590579A JPS5648739A (en) 1979-09-28 1979-09-28 Am stereophonic receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12590579A JPS5648739A (en) 1979-09-28 1979-09-28 Am stereophonic receiver

Publications (2)

Publication Number Publication Date
JPS5648739A true JPS5648739A (en) 1981-05-02
JPS6239576B2 JPS6239576B2 (en) 1987-08-24

Family

ID=14921804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12590579A Granted JPS5648739A (en) 1979-09-28 1979-09-28 Am stereophonic receiver

Country Status (1)

Country Link
JP (1) JPS5648739A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383136A (en) * 1980-06-19 1983-05-10 Pioneer Electronic Corporation Muting circuit for AM stereophonic receiver
US5982901A (en) * 1993-06-08 1999-11-09 Matsushita Electric Industrial Co., Ltd. Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression and in balanced signal transmitting system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6416879U (en) * 1987-07-20 1989-01-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4383136A (en) * 1980-06-19 1983-05-10 Pioneer Electronic Corporation Muting circuit for AM stereophonic receiver
US5982901A (en) * 1993-06-08 1999-11-09 Matsushita Electric Industrial Co., Ltd. Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression and in balanced signal transmitting system

Also Published As

Publication number Publication date
JPS6239576B2 (en) 1987-08-24

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