JPS574626A - Stereophonic demodulating circuit - Google Patents

Stereophonic demodulating circuit

Info

Publication number
JPS574626A
JPS574626A JP7809180A JP7809180A JPS574626A JP S574626 A JPS574626 A JP S574626A JP 7809180 A JP7809180 A JP 7809180A JP 7809180 A JP7809180 A JP 7809180A JP S574626 A JPS574626 A JP S574626A
Authority
JP
Japan
Prior art keywords
signal
supplied
circuit
carrier wave
eliminated
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
JP7809180A
Other languages
Japanese (ja)
Other versions
JPS5947900B2 (en
Inventor
Satoshi Yokoya
Norio Numata
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 JP55078091A priority Critical patent/JPS5947900B2/en
Publication of JPS574626A publication Critical patent/JPS574626A/en
Publication of JPS5947900B2 publication Critical patent/JPS5947900B2/en
Expired 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
    • 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

Abstract

PURPOSE:To reduce the noise burst during an overmodulation or a weak electric field, by dividing an intermediate frequency signal by a signal obtained by providing a certain limiting value to the signal relating to a demodulated sum signal and then multiplying the nonmodulated carrier wave to obtain a desired difference signal. CONSTITUTION:The AM stereophonic signal receives an envelope wave detection through an envelope wave detector 4 and then eliminated for its carrier wave component through a low-pass filter 10 to be supplied to a minimum value limiter 13. At the same time, the AM stereophonic signal is eliminated for its DC component through a capacitor 16 to be supplied to a matrix circuit 7 in the form of a sum signal. The output signal of the limiter 13 is supplied to a dividing circuit 12 to give a division to the output signal of an amplifying circuit 3. The output signal of a divider 12 is supplied to a multiplier 14 to be multiplied by the nonmodulated carrier wave at a PLL circuit 11 and eliminated for the carrier wave component through a low-pass filter 15 to obtain a difference signal. This difference signal is supplied to the circuit 7, and the circuit 7 produces both the L and R signals from the difference and sum signals.
JP55078091A 1980-06-10 1980-06-10 stereo demodulation circuit Expired JPS5947900B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55078091A JPS5947900B2 (en) 1980-06-10 1980-06-10 stereo demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55078091A JPS5947900B2 (en) 1980-06-10 1980-06-10 stereo demodulation circuit

Publications (2)

Publication Number Publication Date
JPS574626A true JPS574626A (en) 1982-01-11
JPS5947900B2 JPS5947900B2 (en) 1984-11-22

Family

ID=13652176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55078091A Expired JPS5947900B2 (en) 1980-06-10 1980-06-10 stereo demodulation circuit

Country Status (1)

Country Link
JP (1) JPS5947900B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60185299U (en) * 1984-05-21 1985-12-09 株式会社東芝 Check valve for cooling water in control rod drive hydraulic system

Also Published As

Publication number Publication date
JPS5947900B2 (en) 1984-11-22

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