JPS54161213A - Pulse noise detector - Google Patents

Pulse noise detector

Info

Publication number
JPS54161213A
JPS54161213A JP7060378A JP7060378A JPS54161213A JP S54161213 A JPS54161213 A JP S54161213A JP 7060378 A JP7060378 A JP 7060378A JP 7060378 A JP7060378 A JP 7060378A JP S54161213 A JPS54161213 A JP S54161213A
Authority
JP
Japan
Prior art keywords
pulse noise
noise
pulse
output
continuous
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
JP7060378A
Other languages
Japanese (ja)
Inventor
Hiroyasu Kishi
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP7060378A priority Critical patent/JPS54161213A/en
Priority to US06/022,342 priority patent/US4278901A/en
Priority to DE2922011A priority patent/DE2922011C2/en
Publication of JPS54161213A publication Critical patent/JPS54161213A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking

Landscapes

  • Manipulation Of Pulses (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To make it possible to fulfill pulse noise detection by detecting a pulse noise by holding the continuous noise in the output of a differential amplifier at a constant level. CONSTITUTION:A high-pass filter extracts a high-frequency component in an input signal and its output signal is differentially amplified 10; and the feedback circuit composed of diodes 28, 29, 30, and 31, and transistors Trs 26 and 27 holds at a constant level a continuous noise contained in collector output of components Tr11 and Tr12 of amplifier 10. Next, the pulse noise is detected by voltage-dividing resistors 36 and 37, and detection Tr38 and then outputted 41. Consequently, the pulse noise can be detected accurately by keeping the continuous noise level constant.
JP7060378A 1978-06-09 1978-06-09 Pulse noise detector Pending JPS54161213A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7060378A JPS54161213A (en) 1978-06-09 1978-06-09 Pulse noise detector
US06/022,342 US4278901A (en) 1978-06-09 1979-03-20 Pulsive component detecting apparatus
DE2922011A DE2922011C2 (en) 1978-06-09 1979-05-30 Device for detecting impulsive interference signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7060378A JPS54161213A (en) 1978-06-09 1978-06-09 Pulse noise detector

Publications (1)

Publication Number Publication Date
JPS54161213A true JPS54161213A (en) 1979-12-20

Family

ID=13436304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7060378A Pending JPS54161213A (en) 1978-06-09 1978-06-09 Pulse noise detector

Country Status (1)

Country Link
JP (1) JPS54161213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6212208A (en) * 1985-07-10 1987-01-21 Matsushita Electric Ind Co Ltd Sequence controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5358712A (en) * 1976-11-08 1978-05-26 Clarion Co Ltd Noise detecting circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5358712A (en) * 1976-11-08 1978-05-26 Clarion Co Ltd Noise detecting circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6212208A (en) * 1985-07-10 1987-01-21 Matsushita Electric Ind Co Ltd Sequence controller

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