JPS5583359A - Am stereophonic demodulator circuit - Google Patents

Am stereophonic demodulator circuit

Info

Publication number
JPS5583359A
JPS5583359A JP15637178A JP15637178A JPS5583359A JP S5583359 A JPS5583359 A JP S5583359A JP 15637178 A JP15637178 A JP 15637178A JP 15637178 A JP15637178 A JP 15637178A JP S5583359 A JPS5583359 A JP S5583359A
Authority
JP
Japan
Prior art keywords
circuit
phase
input signal
signals
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
JP15637178A
Other languages
Japanese (ja)
Inventor
Tsutomu Noda
Isao Akitake
Kazuhiko Yamazaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15637178A priority Critical patent/JPS5583359A/en
Publication of JPS5583359A publication Critical patent/JPS5583359A/en
Pending 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 make it possible to reduce output variation and deterioration of separation due to a difference in phase, by bearing the adequate phase relation of a synchronous detection circuit by correcting the phase difference between a switching signal and input signal. CONSTITUTION:Phase-locked loop circuit 3 obtains two signals for synchronous detection synchronizing with an input signal and a composite synchronizing signal is separately detected 9 and 10 synchronously by those two signals to obtain left and right signals by matrix circuit 12. Here, variable delay circuit 15 is connected to the input signal or switching signal of circuit 9 or 10 and circuit 15 is controlled by the output voltage of phase detection circuit of circuit 3. Consequently, a phase difference between the input signal and switching signal of synchronous detection circuit 12 is corrected to bear adequate phase relation between circuits 9 and 10, so that output variation and deterioration in separation due to the phase difference can be reduced.
JP15637178A 1978-12-20 1978-12-20 Am stereophonic demodulator circuit Pending JPS5583359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15637178A JPS5583359A (en) 1978-12-20 1978-12-20 Am stereophonic demodulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15637178A JPS5583359A (en) 1978-12-20 1978-12-20 Am stereophonic demodulator circuit

Publications (1)

Publication Number Publication Date
JPS5583359A true JPS5583359A (en) 1980-06-23

Family

ID=15626283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15637178A Pending JPS5583359A (en) 1978-12-20 1978-12-20 Am stereophonic demodulator circuit

Country Status (1)

Country Link
JP (1) JPS5583359A (en)

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