JPS5580969A - Television multiple sound broadcast receiver - Google Patents

Television multiple sound broadcast receiver

Info

Publication number
JPS5580969A
JPS5580969A JP15552078A JP15552078A JPS5580969A JP S5580969 A JPS5580969 A JP S5580969A JP 15552078 A JP15552078 A JP 15552078A JP 15552078 A JP15552078 A JP 15552078A JP S5580969 A JPS5580969 A JP S5580969A
Authority
JP
Japan
Prior art keywords
circuit
signal
multiple sound
stereo
program
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
JP15552078A
Other languages
Japanese (ja)
Inventor
Koichi Nakayama
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.)
Toko Inc
Original Assignee
Toko Inc
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 Toko Inc filed Critical Toko Inc
Priority to JP15552078A priority Critical patent/JPS5580969A/en
Priority to US06/103,559 priority patent/US4356510A/en
Publication of JPS5580969A publication Critical patent/JPS5580969A/en
Pending legal-status Critical Current

Links

Classifications

    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Details Of Television Systems (AREA)

Abstract

PURPOSE:To secure the automatic identification and switching among the monaural, stereo and hetere-program broadcast modes by utilizing the presence or absence of the control signal which gives the AM modulation to the subcarrier of 55.1kHz in the TV multiple sound broadcast. CONSTITUTION:The aural composite signal of the TV multiple sound broadcast possesses the frequency bands for the main channel, the secondary channel and the control channel of 55.1kHz each. And the identification is carried out via the control signal between the hetero-program and the stereo signal, and the carrier signal of 55.1kHz is extracted through filter 13 of circuit 21 which processes the subcarrier signals via the FM detector and the amplifier, and then converted into the pulses through pulse shaping circuit 22. These pulses are then counted by counter 23. And the counting action is controlled by the control signal obtained from AM detector 14. Then the switching signals are generated at circuit 24 and via the detection signal of counting to give identification among the stereo, hetero-program and monaural broadcast mode each, thus each circuit being controlled.
JP15552078A 1978-12-14 1978-12-14 Television multiple sound broadcast receiver Pending JPS5580969A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15552078A JPS5580969A (en) 1978-12-14 1978-12-14 Television multiple sound broadcast receiver
US06/103,559 US4356510A (en) 1978-12-14 1979-12-13 Television sound multiplex signal receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15552078A JPS5580969A (en) 1978-12-14 1978-12-14 Television multiple sound broadcast receiver

Publications (1)

Publication Number Publication Date
JPS5580969A true JPS5580969A (en) 1980-06-18

Family

ID=15607851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15552078A Pending JPS5580969A (en) 1978-12-14 1978-12-14 Television multiple sound broadcast receiver

Country Status (1)

Country Link
JP (1) JPS5580969A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57133777A (en) * 1981-02-12 1982-08-18 Nec Corp Control signal discriminating circuit for television audio multiplex broadcast

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57133777A (en) * 1981-02-12 1982-08-18 Nec Corp Control signal discriminating circuit for television audio multiplex broadcast

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