JPS55110480A - Pilot signal identifying unit of audio multiplex broadcast - Google Patents

Pilot signal identifying unit of audio multiplex broadcast

Info

Publication number
JPS55110480A
JPS55110480A JP1801479A JP1801479A JPS55110480A JP S55110480 A JPS55110480 A JP S55110480A JP 1801479 A JP1801479 A JP 1801479A JP 1801479 A JP1801479 A JP 1801479A JP S55110480 A JPS55110480 A JP S55110480A
Authority
JP
Japan
Prior art keywords
signal
output
frequency
pilot signal
inputted
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
JP1801479A
Other languages
Japanese (ja)
Other versions
JPS6056352B2 (en
Inventor
Toyohiko Terada
Koichi Ryu
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 JP54018014A priority Critical patent/JPS6056352B2/en
Publication of JPS55110480A publication Critical patent/JPS55110480A/en
Publication of JPS6056352B2 publication Critical patent/JPS6056352B2/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages

Landscapes

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

Abstract

PURPOSE:To make unnecessary the reed filter and to establish the indentifier low in cost and high in reliability, by the identification through the use of the detection signal in response to difference between the detection output frequency of pilot signal and the reference signal frequency. CONSTITUTION:The composite signal is inputted to BPF1 to select and pick up the pilot signal fA and to obtain the single tone signal from the AM detector 2, and it is inputted to the wave shape circuit 4 via BPF3 to form the rectangular pulse signal fT. On the other hand, the signal fA is converted into rectangular pulse with the wave shape circuit 5, fed to the 1/64 frequency dividing unit 6 to form the reference signal fQ. The signals fQ and fT are inputted to D-FF7 to output the signal fD having the frequency of the difference between the both signals. The frequency of the signal fD is detected at the counter in cascade connection of FF8 and 9. The output of the detector 11 detecting the pilot signal and the output of FF9 through logical product are output of the AND gate 12 to obtain bilinguial control signal, and the logical product of the output of the inverter 13 inverting the output of FF9 and the output of the detector 11 is obtained from the output of the AND gate 14 to obtain stereo control signal.
JP54018014A 1979-02-19 1979-02-19 Audio multiplex broadcast pilot signal identification device Expired JPS6056352B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54018014A JPS6056352B2 (en) 1979-02-19 1979-02-19 Audio multiplex broadcast pilot signal identification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54018014A JPS6056352B2 (en) 1979-02-19 1979-02-19 Audio multiplex broadcast pilot signal identification device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP10627579A Division JPS55110482A (en) 1979-08-21 1979-08-21 Pilot signal identifying unit of audio multiplex broadcast

Publications (2)

Publication Number Publication Date
JPS55110480A true JPS55110480A (en) 1980-08-25
JPS6056352B2 JPS6056352B2 (en) 1985-12-10

Family

ID=11959808

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54018014A Expired JPS6056352B2 (en) 1979-02-19 1979-02-19 Audio multiplex broadcast pilot signal identification device

Country Status (1)

Country Link
JP (1) JPS6056352B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109129A1 (en) * 1981-03-11 1982-09-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for detecting in each case one of two identification signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3109129A1 (en) * 1981-03-11 1982-09-23 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for detecting in each case one of two identification signals

Also Published As

Publication number Publication date
JPS6056352B2 (en) 1985-12-10

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