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JPS56157149A - Stereo separation control device for fm tuner - Google Patents

Stereo separation control device for fm tuner

Info

Publication number
JPS56157149A
JPS56157149A JP6097780A JP6097780A JPS56157149A JP S56157149 A JPS56157149 A JP S56157149A JP 6097780 A JP6097780 A JP 6097780A JP 6097780 A JP6097780 A JP 6097780A JP S56157149 A JPS56157149 A JP S56157149A
Authority
JP
Japan
Prior art keywords
gain
signal
stereo
demodulation
subsignal
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
JP6097780A
Other languages
Japanese (ja)
Other versions
JPH0261825B2 (en
Inventor
Masahiko Sonoda
Junichi Hikita
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.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
Toyo Electronics Industry 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 Rohm Co Ltd, Toyo Electronics Industry Corp filed Critical Rohm Co Ltd
Priority to JP6097780A priority Critical patent/JPS56157149A/en
Publication of JPS56157149A publication Critical patent/JPS56157149A/en
Publication of JPH0261825B2 publication Critical patent/JPH0261825B2/ja
Granted 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
    • 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
    • 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
    • H04H40/63—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 separation improvements or adjustments

Landscapes

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

Abstract

PURPOSE:To facilitate a stereo separation control, by setting the subsignal demodulation gain larger than the main signal demodulation gain for an IC-formed stereo signal demodulating circuit. CONSTITUTION:A stereo demodulating circuit 66 is formed into an IC, and the main signal and subsignal demodulation gains are set at a certain value each only by the component element inside the IC. The subsignal demodulation gain is set larger than the main signal demodulation gain. The gain ratio is set so that the highest separation is obtained in case a stereo signal of a normal phase distribution is applied to the input of the circuit 66. The input signal is supplied to the circuit 66 after receiving a compensation of phase at a high band through a low pass filter 64. Thus the variance is reduced for the gain of a low-band signal.
JP6097780A 1980-05-08 1980-05-08 Stereo separation control device for fm tuner Granted JPS56157149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6097780A JPS56157149A (en) 1980-05-08 1980-05-08 Stereo separation control device for fm tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6097780A JPS56157149A (en) 1980-05-08 1980-05-08 Stereo separation control device for fm tuner

Publications (2)

Publication Number Publication Date
JPS56157149A true JPS56157149A (en) 1981-12-04
JPH0261825B2 JPH0261825B2 (en) 1990-12-21

Family

ID=13157987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6097780A Granted JPS56157149A (en) 1980-05-08 1980-05-08 Stereo separation control device for fm tuner

Country Status (1)

Country Link
JP (1) JPS56157149A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614335A (en) * 1984-06-19 1986-01-10 Nec Corp Fm stereo demodulator
JPH02215240A (en) * 1988-12-15 1990-08-28 Delco Electron Corp Fm stereo circuit
EP1530310A1 (en) * 2002-07-12 2005-05-11 Kabushiki Kaisha Toyota Jidoshokki Separation adjusting circuit
CN103532577A (en) * 2013-10-22 2014-01-22 苏州贝克微电子有限公司 Amplitude modulation stereo receiver capable of realizing separation control

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS614335A (en) * 1984-06-19 1986-01-10 Nec Corp Fm stereo demodulator
JPH02215240A (en) * 1988-12-15 1990-08-28 Delco Electron Corp Fm stereo circuit
EP1530310A1 (en) * 2002-07-12 2005-05-11 Kabushiki Kaisha Toyota Jidoshokki Separation adjusting circuit
EP1530310A4 (en) * 2002-07-12 2005-10-26 Toyota Jidoshokki Kk Separation adjusting circuit
CN103532577A (en) * 2013-10-22 2014-01-22 苏州贝克微电子有限公司 Amplitude modulation stereo receiver capable of realizing separation control

Also Published As

Publication number Publication date
JPH0261825B2 (en) 1990-12-21

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