JPS55151873A - Television sound multiple signal demodulator - Google Patents

Television sound multiple signal demodulator

Info

Publication number
JPS55151873A
JPS55151873A JP5991979A JP5991979A JPS55151873A JP S55151873 A JPS55151873 A JP S55151873A JP 5991979 A JP5991979 A JP 5991979A JP 5991979 A JP5991979 A JP 5991979A JP S55151873 A JPS55151873 A JP S55151873A
Authority
JP
Japan
Prior art keywords
signal
circuit
component
filter
detecting circuit
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
JP5991979A
Other languages
Japanese (ja)
Inventor
Takuo Mori
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 JP5991979A priority Critical patent/JPS55151873A/en
Publication of JPS55151873A publication Critical patent/JPS55151873A/en
Pending 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
    • 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

Abstract

PURPOSE:To cut the frequency band where the disturbance due to the buzz beat is conspicuous and thus reduce the disturbance, by detecting the signal component of a multiple of the horizontal synchronous frequency and giving the control to the pass band of the filter inserted to the subchannel signal line at the moment of detection of the signal component. CONSTITUTION:The aural IF signal is supplied to FM detecting circuit 1 and then delivered after converted into the main channel signal, the subchannel signal and the pilot signal featuring each frequency spectrum respectively. Only the main channel signal is isolated through LPF2 and then supplied to the matrix circuit 3. The subchannel signal is selected through BPF4 and then detected at FM detecting circuit 5 to be applied to variable filter 6. At the same time, the detection output obtained at circuit 1 is applied to synchronous signal component detecting circuit 9 to detect the signal of an integer-fold the synchronous component. With this detected component, the pass band of filter 6 is controlled, and the output of filter 6 is applied to circuit 3. And the main sound is isolated from the secondary sound for production through circuit 3 and with the pilot signal detected at pilot signal detecting circuit 8.
JP5991979A 1979-05-16 1979-05-16 Television sound multiple signal demodulator Pending JPS55151873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5991979A JPS55151873A (en) 1979-05-16 1979-05-16 Television sound multiple signal demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5991979A JPS55151873A (en) 1979-05-16 1979-05-16 Television sound multiple signal demodulator

Publications (1)

Publication Number Publication Date
JPS55151873A true JPS55151873A (en) 1980-11-26

Family

ID=13127015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5991979A Pending JPS55151873A (en) 1979-05-16 1979-05-16 Television sound multiple signal demodulator

Country Status (1)

Country Link
JP (1) JPS55151873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982004517A1 (en) * 1981-06-19 1982-12-23 Electric Co Sanyo Television voice multiplex signal reproducing circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982004517A1 (en) * 1981-06-19 1982-12-23 Electric Co Sanyo Television voice multiplex signal reproducing circuit

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