JPS5528682A - Fm stereo receiver - Google Patents

Fm stereo receiver

Info

Publication number
JPS5528682A
JPS5528682A JP10301578A JP10301578A JPS5528682A JP S5528682 A JPS5528682 A JP S5528682A JP 10301578 A JP10301578 A JP 10301578A JP 10301578 A JP10301578 A JP 10301578A JP S5528682 A JPS5528682 A JP S5528682A
Authority
JP
Japan
Prior art keywords
output
amplifier
fed
demodulator
voltage
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
JP10301578A
Other languages
Japanese (ja)
Inventor
Hiromitsu Takami
Hideo Ito
Katsunori Nanpo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10301578A priority Critical patent/JPS5528682A/en
Publication of JPS5528682A publication Critical patent/JPS5528682A/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
    • 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

Abstract

PURPOSE:To eliminate rapid change in S/N, by changing the stereo separation in response to the change in the antenna input level. CONSTITUTION:The antenna 101 is connected to the front end 102, the output is input to the first IF amplifier 103a, the output is fed to the second IF amplifier 103b and the rectifier 107, the output of the second IF amplifier is connected to the detector 104, the detected output is fed to the multiplex demodulator 105, and it is outputted as the stereo audio signal to the output terminals 106a and 106b of the demodulator 105. Further, a part of the output of the first IF amplifier 103a is rectified with the rectifier 107 to convert in into DC voltage, and this DC voltage is fed to the level control terminal 108 of the subcarrier of the demodulator 105. This DC voltage controls the level of subcarrier and demodulates the composite signal. Thus, the stereo receiver removing rapid change in S/N can be established.
JP10301578A 1978-08-23 1978-08-23 Fm stereo receiver Pending JPS5528682A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10301578A JPS5528682A (en) 1978-08-23 1978-08-23 Fm stereo receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10301578A JPS5528682A (en) 1978-08-23 1978-08-23 Fm stereo receiver

Publications (1)

Publication Number Publication Date
JPS5528682A true JPS5528682A (en) 1980-02-29

Family

ID=14342811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10301578A Pending JPS5528682A (en) 1978-08-23 1978-08-23 Fm stereo receiver

Country Status (1)

Country Link
JP (1) JPS5528682A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6317257B2 (en) * 1980-08-20 1988-04-13 Hitachi Ltd

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6317257B2 (en) * 1980-08-20 1988-04-13 Hitachi Ltd

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