JPS55141843A - Multiplex signal generator of fm-fm system - Google Patents

Multiplex signal generator of fm-fm system

Info

Publication number
JPS55141843A
JPS55141843A JP4974079A JP4974079A JPS55141843A JP S55141843 A JPS55141843 A JP S55141843A JP 4974079 A JP4974079 A JP 4974079A JP 4974079 A JP4974079 A JP 4974079A JP S55141843 A JPS55141843 A JP S55141843A
Authority
JP
Japan
Prior art keywords
frequency
oscillator
signal
output
filter
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
JP4974079A
Other languages
Japanese (ja)
Other versions
JPS6129589B2 (en
Inventor
Toshihiko Suzuki
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.)
EIDEN CO Ltd
EIDEN KK
Original Assignee
EIDEN CO Ltd
EIDEN KK
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 EIDEN CO Ltd, EIDEN KK filed Critical EIDEN CO Ltd
Priority to JP4974079A priority Critical patent/JPS55141843A/en
Publication of JPS55141843A publication Critical patent/JPS55141843A/en
Publication of JPS6129589B2 publication Critical patent/JPS6129589B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Television Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To establish the multiplex signal generator which can hold the signal waveform of subcarrier to sinusoidal wave and has good separation, by mixing the right signal with subcarrier after frequency modulation and passing through the band pass filter narrow in the band width. CONSTITUTION:The left and right input signals L, R are modulated in frequency f1 with the frequency modulation oscillators U3 and U4 controlled into the same frequency with the frequency difference detector U9. The output of the oscillator U4 is mixed with the output of the sub-carrier oscillator U5 in frequency FS at the frequency mixer U6 and fed to the narrow band filter U7 having the center frequency f1-FS. The output of the filter U7 and the oscillator U3 is mixed at the mixer U8, and the sum signal is fed to the p/q frequency converter U14 via the filter U13. Further, the difference signal is fed to the frequency modulation oscillator U11 controlled with the main carrier oscillator U18 and the frequency difference detector U17 in frequency Fm. The mixer U12 receiving the output of the oscillator U11 and converter U14 outputs miltiplex signal of FM-FM system.
JP4974079A 1979-04-24 1979-04-24 Multiplex signal generator of fm-fm system Granted JPS55141843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4974079A JPS55141843A (en) 1979-04-24 1979-04-24 Multiplex signal generator of fm-fm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4974079A JPS55141843A (en) 1979-04-24 1979-04-24 Multiplex signal generator of fm-fm system

Publications (2)

Publication Number Publication Date
JPS55141843A true JPS55141843A (en) 1980-11-06
JPS6129589B2 JPS6129589B2 (en) 1986-07-08

Family

ID=12839575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4974079A Granted JPS55141843A (en) 1979-04-24 1979-04-24 Multiplex signal generator of fm-fm system

Country Status (1)

Country Link
JP (1) JPS55141843A (en)

Also Published As

Publication number Publication date
JPS6129589B2 (en) 1986-07-08

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