JPS55136739A - Test signal generating unit of fm-fm system - Google Patents

Test signal generating unit of fm-fm system

Info

Publication number
JPS55136739A
JPS55136739A JP4416679A JP4416679A JPS55136739A JP S55136739 A JPS55136739 A JP S55136739A JP 4416679 A JP4416679 A JP 4416679A JP 4416679 A JP4416679 A JP 4416679A JP S55136739 A JPS55136739 A JP S55136739A
Authority
JP
Japan
Prior art keywords
frequency
circuit
output
mixing
hand
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
JP4416679A
Other languages
Japanese (ja)
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 JP4416679A priority Critical patent/JPS55136739A/en
Publication of JPS55136739A publication Critical patent/JPS55136739A/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
    • 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)
  • Television Receiver Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To make easy the constitution of the frequency conversion circuit, by inserting the two 1/p and 1/q frequency division circuit respectively to the both output lines of the first frequency modulation circuit, in matching the ratio of the frequency shift of the main and subcarrier. CONSTITUTION:The low frequency signal AF modulates the oscillated frequency pf1 at the frequency modulation circuit U1. The output is led, on one hand, to the first frequency mixing circuit U2, and on the other hand, to the second frequency mixing circuit U8 via the 1/q first frequency division circuit U3. Further, the frequency component signal of the difference picked up via the band pass filter U13 of the center frequency pFs among the outputs of the circuit U2 is fed to the main carrier frequency modulation oscillation circuit U14 via the 1/p second frequency division circuit U4. On the other hand, after the output of the standard subcarrier oscillation circuit U9 is multiplied, frequency mixing is made. This output and the output of the fixing high frequency oscillation circuit U12 are selected at the selector switch S and are fed to the mixing circuit U2.
JP4416679A 1979-04-13 1979-04-13 Test signal generating unit of fm-fm system Pending JPS55136739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4416679A JPS55136739A (en) 1979-04-13 1979-04-13 Test signal generating unit of fm-fm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4416679A JPS55136739A (en) 1979-04-13 1979-04-13 Test signal generating unit of fm-fm system

Publications (1)

Publication Number Publication Date
JPS55136739A true JPS55136739A (en) 1980-10-24

Family

ID=12683997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4416679A Pending JPS55136739A (en) 1979-04-13 1979-04-13 Test signal generating unit of fm-fm system

Country Status (1)

Country Link
JP (1) JPS55136739A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7802787B2 (en) 2007-06-28 2010-09-28 Brother Kogyo Kabushiki Kaisha Sheet discharging device and image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110723A (en) * 1974-07-16 1976-01-28 Matsushita Electric Ind Co Ltd KARAATEREBIJONJUZOKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5110723A (en) * 1974-07-16 1976-01-28 Matsushita Electric Ind Co Ltd KARAATEREBIJONJUZOKI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7802787B2 (en) 2007-06-28 2010-09-28 Brother Kogyo Kabushiki Kaisha Sheet discharging device and image forming apparatus

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