JPS5791084A - Audio detection circuit - Google Patents

Audio detection circuit

Info

Publication number
JPS5791084A
JPS5791084A JP55168888A JP16888880A JPS5791084A JP S5791084 A JPS5791084 A JP S5791084A JP 55168888 A JP55168888 A JP 55168888A JP 16888880 A JP16888880 A JP 16888880A JP S5791084 A JPS5791084 A JP S5791084A
Authority
JP
Japan
Prior art keywords
intermediate frequency
audio intermediate
audio
detector
video
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
JP55168888A
Other languages
Japanese (ja)
Other versions
JPS6228911B2 (en
Inventor
Kenji Kojima
Masao Yoshitomi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP55168888A priority Critical patent/JPS5791084A/en
Publication of JPS5791084A publication Critical patent/JPS5791084A/en
Publication of JPS6228911B2 publication Critical patent/JPS6228911B2/ja
Granted 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

Landscapes

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

Abstract

PURPOSE:To reduce mutual interference of signals for a large scale integrated circuit, by providing an active low pass filter at an output side of a circuit which generates the 2nd audio intermediate frequency and preventing an output of useless component at IC terminals. CONSTITUTION:A signal mixed with a video intermediate frequency fp and the 1st audio intermediate frequency fs1 is inputted to an input terminal 3 of a detector 1 of a TV receiver, it is detected at a detector 1, and the video intermediate frequency fp, 1st audio intermediate frequency fs1 and 2nd audio intermediate frequency fs2 are outputted. An active low pass filter 2 is provided at the output side of the detector 1 to prevent the video intermediate frequency fp and 1st audio intermediate frequency fs1 from mixing to the 2nd audio intermediate frequency fs2 outputted at an output terminal 4. Further, mutual interference of the signal for a large scale integrated circuit is reduced.
JP55168888A 1980-11-27 1980-11-27 Audio detection circuit Granted JPS5791084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55168888A JPS5791084A (en) 1980-11-27 1980-11-27 Audio detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55168888A JPS5791084A (en) 1980-11-27 1980-11-27 Audio detection circuit

Publications (2)

Publication Number Publication Date
JPS5791084A true JPS5791084A (en) 1982-06-07
JPS6228911B2 JPS6228911B2 (en) 1987-06-23

Family

ID=15876421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55168888A Granted JPS5791084A (en) 1980-11-27 1980-11-27 Audio detection circuit

Country Status (1)

Country Link
JP (1) JPS5791084A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48104221U (en) * 1972-03-11 1973-12-05
JPS51132054A (en) * 1975-05-12 1976-11-16 Matsushita Electric Ind Co Ltd Trap device
JPS5240918A (en) * 1975-09-27 1977-03-30 Matsushita Electric Ind Co Ltd Trap equipment
JPS5240917A (en) * 1975-09-27 1977-03-30 Matsushita Electric Ind Co Ltd Trap equipment
JPS5418100A (en) * 1977-07-09 1979-02-09 Sumitomo Metal Mining Co Method of making paste for resistor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48104221U (en) * 1972-03-11 1973-12-05
JPS51132054A (en) * 1975-05-12 1976-11-16 Matsushita Electric Ind Co Ltd Trap device
JPS5240918A (en) * 1975-09-27 1977-03-30 Matsushita Electric Ind Co Ltd Trap equipment
JPS5240917A (en) * 1975-09-27 1977-03-30 Matsushita Electric Ind Co Ltd Trap equipment
JPS5418100A (en) * 1977-07-09 1979-02-09 Sumitomo Metal Mining Co Method of making paste for resistor

Also Published As

Publication number Publication date
JPS6228911B2 (en) 1987-06-23

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