JPS56165441A - Stereo demodulator - Google Patents

Stereo demodulator

Info

Publication number
JPS56165441A
JPS56165441A JP6900980A JP6900980A JPS56165441A JP S56165441 A JPS56165441 A JP S56165441A JP 6900980 A JP6900980 A JP 6900980A JP 6900980 A JP6900980 A JP 6900980A JP S56165441 A JPS56165441 A JP S56165441A
Authority
JP
Japan
Prior art keywords
frequency
pass filter
band pass
discriminator
signal
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
JP6900980A
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 JP6900980A priority Critical patent/JPS56165441A/en
Publication of JPS56165441A publication Critical patent/JPS56165441A/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
    • 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
    • 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

Abstract

PURPOSE:To avoid the occurrence of a dematrix, by using a means that converts the output signal frequency of the 1st band pass filter into a double value of the output signal frequency of the 2nd band pass filter and leads the differential frequency component to the 1st aural frequency discriminator. CONSTITUTION:The double voice carrier signal sent from an input terminal 1 is applied to a frequency mixer MIX through a line l2 and via the 1st band pass filter BPF1 having the frequency of the 1st voice carrier wave F1 as its center frequency and a multiplier U1 having a multiplication ratio of 2 in order. At the same time, the carrier signal is applied to the mixer MIX through a line l3 and via the 2nd band pass filter BPF2 having the 2nd carrier wave F2 as its center frequency. Then the output line of the mixer MIX is applied to an output terminal 2 of the left signal L via the 1st voice frequency discriminator U2a. The differential frequency component is led to the 1st aural frequency discriminator U2a to directly deliver the left signal L through the discriminator U2a.
JP6900980A 1980-05-26 1980-05-26 Stereo demodulator Pending JPS56165441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6900980A JPS56165441A (en) 1980-05-26 1980-05-26 Stereo demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6900980A JPS56165441A (en) 1980-05-26 1980-05-26 Stereo demodulator

Publications (1)

Publication Number Publication Date
JPS56165441A true JPS56165441A (en) 1981-12-19

Family

ID=13390160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6900980A Pending JPS56165441A (en) 1980-05-26 1980-05-26 Stereo demodulator

Country Status (1)

Country Link
JP (1) JPS56165441A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119281A (en) * 1974-08-07 1976-02-16 Yokohama Rubber Co Ltd KANSHOKI
JPS53107228A (en) * 1977-02-28 1978-09-19 Philips Nv 22fm audio carrier television system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5119281A (en) * 1974-08-07 1976-02-16 Yokohama Rubber Co Ltd KANSHOKI
JPS53107228A (en) * 1977-02-28 1978-09-19 Philips Nv 22fm audio carrier television system

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