JPS54161213A - Pulse noise detector - Google Patents
Pulse noise detectorInfo
- 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
Links
- 238000001514 detection method Methods 0.000 abstract 2
- 239000000284 extract Substances 0.000 abstract 1
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5358712A (en) * | 1976-11-08 | 1978-05-26 | Clarion Co Ltd | Noise detecting circuit |
-
1978
- 1978-06-09 JP JP7060378A patent/JPS54161213A/en active Pending
Patent Citations (1)
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)
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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