JPS5520046A - Sound buzz eliminating device - Google Patents

Sound buzz eliminating device

Info

Publication number
JPS5520046A
JPS5520046A JP9280278A JP9280278A JPS5520046A JP S5520046 A JPS5520046 A JP S5520046A JP 9280278 A JP9280278 A JP 9280278A JP 9280278 A JP9280278 A JP 9280278A JP S5520046 A JPS5520046 A JP S5520046A
Authority
JP
Japan
Prior art keywords
sound
intermediate frequency
detector
video
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
JP9280278A
Other languages
Japanese (ja)
Inventor
Masaru Takeshita
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co Ltd
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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP9280278A priority Critical patent/JPS5520046A/en
Publication of JPS5520046A publication Critical patent/JPS5520046A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE: To secure the effective elimination of the sound buzz by providing the sound detector independently from the video detector and then inserting the trap circuit to attenuate the side band of the intermediate frequency into the input side of the sound detector in case the TV signal of the sound multiple system is received.
CONSTITUTION: The TV signal of the sound multiple system is supplied to tuner 22 via antenna 21, and the video intermediate frequency signal delivered from tuner 22 is amplified by video intermediate frequency amplifier 23. At the same time, the video intermediate frequency is drawn out from the output of amplifier 23 and then applied to video detector 25 via filter/aural trap 24 which traps the sound intermediate frequency. Thus the video signal is delivered through terminal 26 of detector 25. Furthermore, the output of tuner 22 is supplied to filter/trap circuit 27 provided independently to attenuate the side of the sound intermediate frequency, and the aural signal sent from circuit 27 and with the side band eliminated is detected through sound detector 28 and then delivered to terminal 29, thus eliminating the sound buzz effectively.
COPYRIGHT: (C)1980,JPO&Japio
JP9280278A 1978-07-29 1978-07-29 Sound buzz eliminating device Pending JPS5520046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9280278A JPS5520046A (en) 1978-07-29 1978-07-29 Sound buzz eliminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9280278A JPS5520046A (en) 1978-07-29 1978-07-29 Sound buzz eliminating device

Publications (1)

Publication Number Publication Date
JPS5520046A true JPS5520046A (en) 1980-02-13

Family

ID=14064537

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9280278A Pending JPS5520046A (en) 1978-07-29 1978-07-29 Sound buzz eliminating device

Country Status (1)

Country Link
JP (1) JPS5520046A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966281A (en) * 1982-10-06 1984-04-14 Mitsubishi Electric Corp Sound first detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966281A (en) * 1982-10-06 1984-04-14 Mitsubishi Electric Corp Sound first detector

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