JPS56106448A - Stereo/monaural switching control device for am stereo receiver - Google Patents

Stereo/monaural switching control device for am stereo receiver

Info

Publication number
JPS56106448A
JPS56106448A JP864580A JP864580A JPS56106448A JP S56106448 A JPS56106448 A JP S56106448A JP 864580 A JP864580 A JP 864580A JP 864580 A JP864580 A JP 864580A JP S56106448 A JPS56106448 A JP S56106448A
Authority
JP
Japan
Prior art keywords
stereo
monaural
output
circuit
reset
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
JP864580A
Other languages
Japanese (ja)
Other versions
JPS5843940B2 (en
Inventor
Toshito Ichikawa
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP864580A priority Critical patent/JPS5843940B2/en
Publication of JPS56106448A publication Critical patent/JPS56106448A/en
Publication of JPS5843940B2 publication Critical patent/JPS5843940B2/en
Expired 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)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To ensure an accurate control for switching between the monaural and stereo modes, by installing the means that is controlled under a stereo state after triggering during existence of the difference signal and reset when the level of the received signal drops or no sum signal exists. CONSTITUTION:In case the field intensity is large enough with existence of the audio signal, a difference signal is delivered from the FM wave detector 2 in a stereo broadcast mode. The output of the rectifying circuit 6 has a high level to trigger the memory circuit 7, and the stereo/monaural change-over switch 3 is controlled to a stereo mode. With a reduction of the field intensity, the output of the comparator 10 to which the output of the rectifying circuit 9 is applied has a low level. Thus the circuit 7 is reset, and the switch 3 is controlled to a monaural state. When the audio signal is discontinued, the output of the rectifying circuit 8 to which the sum signal is applied from the AM wave detector 1 has a low level to reset the circuit 7. Thus a monaural state is held.
JP864580A 1980-01-28 1980-01-28 Stereo/monaural switching control device for AM stereo receiver Expired JPS5843940B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP864580A JPS5843940B2 (en) 1980-01-28 1980-01-28 Stereo/monaural switching control device for AM stereo receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP864580A JPS5843940B2 (en) 1980-01-28 1980-01-28 Stereo/monaural switching control device for AM stereo receiver

Publications (2)

Publication Number Publication Date
JPS56106448A true JPS56106448A (en) 1981-08-24
JPS5843940B2 JPS5843940B2 (en) 1983-09-30

Family

ID=11698678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP864580A Expired JPS5843940B2 (en) 1980-01-28 1980-01-28 Stereo/monaural switching control device for AM stereo receiver

Country Status (1)

Country Link
JP (1) JPS5843940B2 (en)

Also Published As

Publication number Publication date
JPS5843940B2 (en) 1983-09-30

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