JPS5624885A - Audio muting circuit - Google Patents

Audio muting circuit

Info

Publication number
JPS5624885A
JPS5624885A JP10007079A JP10007079A JPS5624885A JP S5624885 A JPS5624885 A JP S5624885A JP 10007079 A JP10007079 A JP 10007079A JP 10007079 A JP10007079 A JP 10007079A JP S5624885 A JPS5624885 A JP S5624885A
Authority
JP
Japan
Prior art keywords
output
circuit
audio
synchronizing signal
audio output
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
JP10007079A
Other languages
Japanese (ja)
Inventor
Hideo Yabiku
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10007079A priority Critical patent/JPS5624885A/en
Publication of JPS5624885A publication Critical patent/JPS5624885A/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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H04N5/505—Invisible or silent tuning

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To avoid noise during search, by making 0 the audio output during search with the audio muting circuit and enabling the audio output automatically when the serach is stopped and the reception is made. CONSTITUTION:The synchronizing separation output 11 from the video amplifying and synchronization separation circuit 4 is given to the synchonization identifying circuit 9 to obtain the output 12 which is at high potential when the synchronizing signal can be confirmed and at ground potential when not identified. When this output 12 is fed to the switch circuit 10 and the synchronizing signal is not present, the input to the audio amplifier circuit 7 is interrupted and audio output is produced to the speaker 8 only when the synchronizing signal is present.
JP10007079A 1979-08-06 1979-08-06 Audio muting circuit Pending JPS5624885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10007079A JPS5624885A (en) 1979-08-06 1979-08-06 Audio muting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10007079A JPS5624885A (en) 1979-08-06 1979-08-06 Audio muting circuit

Publications (1)

Publication Number Publication Date
JPS5624885A true JPS5624885A (en) 1981-03-10

Family

ID=14264193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10007079A Pending JPS5624885A (en) 1979-08-06 1979-08-06 Audio muting circuit

Country Status (1)

Country Link
JP (1) JPS5624885A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318497A1 (en) 1982-05-23 1983-12-15 Sony Corp., Tokyo DISPLAY ARRANGEMENT FOR THE REPRODUCTION OF PROGRAM INFORMATION FROM A RECORDING CARRIER, IN PARTICULAR BY MEANS OF AN OPTICAL READING DEVICE
JPS61176878U (en) * 1985-04-20 1986-11-05
JPS647864A (en) * 1987-06-30 1989-01-11 Matsushita Electric Ind Co Ltd Sound erasing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318497A1 (en) 1982-05-23 1983-12-15 Sony Corp., Tokyo DISPLAY ARRANGEMENT FOR THE REPRODUCTION OF PROGRAM INFORMATION FROM A RECORDING CARRIER, IN PARTICULAR BY MEANS OF AN OPTICAL READING DEVICE
JPS61176878U (en) * 1985-04-20 1986-11-05
JPS647864A (en) * 1987-06-30 1989-01-11 Matsushita Electric Ind Co Ltd Sound erasing device

Similar Documents

Publication Publication Date Title
ES445650A1 (en) Apparatus for visualizing on a kinescope screen video signals which are either picked up by an antenna or generated in the apparatus itself
JPS5624885A (en) Audio muting circuit
JPS5750176A (en) Synchronizing separation circuit
JPS5717277A (en) Raster blanking circuit
JPS5246709A (en) Signal receiving equipment
GB821119A (en) Circuit arrangements for differential correction of television receivers
JPS5283114A (en) Gathering receiver
JPS5335301A (en) Mpx decoder circuit
JPS5220801A (en) Automatic voice frequency elimination and control system
JPS55161475A (en) Squelch circuit of television receiver
SE9002029D0 (en) CATV TERMINAL APPARATUS
JPS5220749A (en) Synchronizing detection circuit
JPS6481531A (en) Receiver
JPS53118930A (en) Television receiver
JPS567541A (en) Fm radio for vehicle
JPS645250A (en) Howling prevention circuit for loudspeaker system telephone set
GB601227A (en) Radio receiver for simultaneously receiving signals of different types
JPS53145517A (en) Video amplifier circuit
KR790000361B1 (en) Video amplifying circuit using as a sync separator
JPS5235515A (en) Tv receiver
JPS5573178A (en) Aural muting circuit for television picture receiver
JPS5643881A (en) Sound multiplex broadcast receiving circuit
JPS5368122A (en) Receiver for satellite broadcast
JPS545316A (en) Amplifier selector
JPS5799879A (en) Receiver for television audio signal