JPS56161732A - Stereo demodulator - Google Patents

Stereo demodulator

Info

Publication number
JPS56161732A
JPS56161732A JP6533580A JP6533580A JPS56161732A JP S56161732 A JPS56161732 A JP S56161732A JP 6533580 A JP6533580 A JP 6533580A JP 6533580 A JP6533580 A JP 6533580A JP S56161732 A JPS56161732 A JP S56161732A
Authority
JP
Japan
Prior art keywords
frequency
signal
line
voice
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
JP6533580A
Other languages
Japanese (ja)
Other versions
JPS6228910B2 (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 JP6533580A priority Critical patent/JPS56161732A/en
Publication of JPS56161732A publication Critical patent/JPS56161732A/en
Publication of JPS6228910B2 publication Critical patent/JPS6228910B2/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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Television Receiver Circuits (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To prevent the deterioration of degree of separation at the stage of demodulation, by bisecting an introduction line of an FM signal of two-voice carrier system, and connecting a mutual modulation circuit, a filter, and a frequency discriminator to one of them so that one of stereo signals can be outputted. CONSTITUTION:An introduction line l1 for a carrier signal (F1+ or -DELTAF( (L+R)))+ (F2+ or -DELTAF(R)) frequency-modulated for two-voice carrier system, is bisected. Further, on one line l2, an intermodulation circuit U1 mentioned later, the 1st band pass filter BPF1 taking the frequency of the ternary component signal (2F1-F2) as the center frequency, and the 1st audio frequency discriminator U2 are connected, to output one stereo signal L. To another line l3, the 2nd band pass filter BPF2 taking the 2nd carrier F2 as the center frequency and the 2nd voice frequency discriminator U3, are connected to output another stereo signal R. The intermodulation circuit U1 consists of the constitution as shown in Figure, for example, to produce the frequency components of an odd order consisting of the combination of input side signals f1, f2, as f1, f2, 2f1-f2, 2f2-f1, 3f1-2f2,-.
JP6533580A 1980-05-19 1980-05-19 Stereo demodulator Granted JPS56161732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6533580A JPS56161732A (en) 1980-05-19 1980-05-19 Stereo demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6533580A JPS56161732A (en) 1980-05-19 1980-05-19 Stereo demodulator

Publications (2)

Publication Number Publication Date
JPS56161732A true JPS56161732A (en) 1981-12-12
JPS6228910B2 JPS6228910B2 (en) 1987-06-23

Family

ID=13283945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6533580A Granted JPS56161732A (en) 1980-05-19 1980-05-19 Stereo demodulator

Country Status (1)

Country Link
JP (1) JPS56161732A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53107228A (en) * 1977-02-28 1978-09-19 Philips Nv 22fm audio carrier television system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53107228A (en) * 1977-02-28 1978-09-19 Philips Nv 22fm audio carrier television system

Also Published As

Publication number Publication date
JPS6228910B2 (en) 1987-06-23

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