JPS5568754A - Stereo signal receiving system - Google Patents

Stereo signal receiving system

Info

Publication number
JPS5568754A
JPS5568754A JP14115178A JP14115178A JPS5568754A JP S5568754 A JPS5568754 A JP S5568754A JP 14115178 A JP14115178 A JP 14115178A JP 14115178 A JP14115178 A JP 14115178A JP S5568754 A JPS5568754 A JP S5568754A
Authority
JP
Japan
Prior art keywords
switches
signals
output
sound image
stereo
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
JP14115178A
Other languages
Japanese (ja)
Other versions
JPS6243380B2 (en
Inventor
Kazuhiko Yamazaki
Tsutomu Noda
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 JP14115178A priority Critical patent/JPS5568754A/en
Publication of JPS5568754A publication Critical patent/JPS5568754A/en
Publication of JPS6243380B2 publication Critical patent/JPS6243380B2/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
    • 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)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To enhance the stereophonic effect without lowering the noise properties even at reception of the weak electric field by increasing the stereophonic feeling with addition of the sound image magnifying device in case the antenna input signal level is low. CONSTITUTION:The output of stereo demodulator 7, which delivers the stereo signals supplied to antenna 1 as demodulation signals Lout and Rout, is distributed into three parts to be applied to space transmission properties additional circuits 20 and 21 forming variable sound image magnifying circuit 18 and 19 as well as to linear switches 22 and 23. At the same time, the output signals magnified the stereo feeling of signals Vout and Rout are applied to switches 22 and 23 via circuits 20 and 21. Then switches 22 and 23 are controlled by the output of level detector 8 which detects the level of IF amplifier 5, and the output of the two different types of signals systems supplied to switches 22 and 23 with different frequency properties are controlled. The frequency properties are changed continuously to increase the magnifying effect of the sound image. Switches 22 and 23 of circuits 18 and 19 are formed with the differential amplifiers.
JP14115178A 1978-11-17 1978-11-17 Stereo signal receiving system Granted JPS5568754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14115178A JPS5568754A (en) 1978-11-17 1978-11-17 Stereo signal receiving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14115178A JPS5568754A (en) 1978-11-17 1978-11-17 Stereo signal receiving system

Publications (2)

Publication Number Publication Date
JPS5568754A true JPS5568754A (en) 1980-05-23
JPS6243380B2 JPS6243380B2 (en) 1987-09-14

Family

ID=15285319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14115178A Granted JPS5568754A (en) 1978-11-17 1978-11-17 Stereo signal receiving system

Country Status (1)

Country Link
JP (1) JPS5568754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109249U (en) * 1984-12-24 1986-07-10
JPH01277032A (en) * 1988-04-28 1989-11-07 Alpine Electron Inc Fm stereo receiver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06202572A (en) * 1991-03-28 1994-07-22 Gijutsu Kenkyu Kumiai Iryo Fukushi Kiki Kenkyusho Three-dimensional pin display

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109249U (en) * 1984-12-24 1986-07-10
JPH01277032A (en) * 1988-04-28 1989-11-07 Alpine Electron Inc Fm stereo receiver

Also Published As

Publication number Publication date
JPS6243380B2 (en) 1987-09-14

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