JPS5769948A - Fm stereo receiver - Google Patents

Fm stereo receiver

Info

Publication number
JPS5769948A
JPS5769948A JP14721080A JP14721080A JPS5769948A JP S5769948 A JPS5769948 A JP S5769948A JP 14721080 A JP14721080 A JP 14721080A JP 14721080 A JP14721080 A JP 14721080A JP S5769948 A JPS5769948 A JP S5769948A
Authority
JP
Japan
Prior art keywords
path
pass filter
time constant
low pass
output
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
JP14721080A
Other languages
Japanese (ja)
Inventor
Hisashi Arita
Shunichi Nezu
Kiyotake Fukui
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 JP14721080A priority Critical patent/JPS5769948A/en
Publication of JPS5769948A publication Critical patent/JPS5769948A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To reduce the multi-path distortion, by providing a switching means which switches time constant of a low pass filter constituting a PLL circuit according to the output of a multo-path detection means. CONSTITUTION:If no multi-path exists, since no output signal is present from a multi-path detector 8, a low pass filter time constant switching circuit 9 is operated and the time constant of the low pass filter consisting a stereo demodulator 7 is not switched. Thus, in this case, normal stereo demodulating operation is made. If present, a detection signal is outputted from the multi-path detector 8 is outputted, and the low pass filter time constant switching circuit 9 is operated from the output. Thus, switching is made so that the time constant of the low pass filter constituting the stereo demodulator 7 can sufficiently be greater than normal value. Thus, the variance of phase of a pilot signal produced with the multi-path can be absorbed and the multi-path distortion can be reduced.
JP14721080A 1980-10-20 1980-10-20 Fm stereo receiver Pending JPS5769948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14721080A JPS5769948A (en) 1980-10-20 1980-10-20 Fm stereo receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14721080A JPS5769948A (en) 1980-10-20 1980-10-20 Fm stereo receiver

Publications (1)

Publication Number Publication Date
JPS5769948A true JPS5769948A (en) 1982-04-30

Family

ID=15425049

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14721080A Pending JPS5769948A (en) 1980-10-20 1980-10-20 Fm stereo receiver

Country Status (1)

Country Link
JP (1) JPS5769948A (en)

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