JPS562767A - Impulsive noise eliminating circuit - Google Patents

Impulsive noise eliminating circuit

Info

Publication number
JPS562767A
JPS562767A JP7943979A JP7943979A JPS562767A JP S562767 A JPS562767 A JP S562767A JP 7943979 A JP7943979 A JP 7943979A JP 7943979 A JP7943979 A JP 7943979A JP S562767 A JPS562767 A JP S562767A
Authority
JP
Japan
Prior art keywords
signal
impulsive noise
output
reference value
circuit
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
JP7943979A
Other languages
Japanese (ja)
Inventor
Katsuyuki Ishii
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 JP7943979A priority Critical patent/JPS562767A/en
Publication of JPS562767A publication Critical patent/JPS562767A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of DC offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To eliminate impulsive noise of a reference value or more to improve S/N for communication of a large input signal level fluctuation, by detecting the average level of input signals and by using the output as the comparison reference value. CONSTITUTION:The signal input to input terminal IN is distributed to detecting circuit 5, comparator 2, and switch circuit 3 by signal distributor 1, and the input signal is detected by detecting circuit 5 to generate a DC voltage proportional to the signal level. This DC voltage is applied to comparator 2 as a reference voltage and is compared with the signal from distributor 1 to detect impulsive noise of the reference value or more included in the input signal, and this detected noise of an average level or more is applied to switch circuit 3 to control it, and thus, impulsive noise of the reference value or more included in the signal output to output end OUT is eliminated. Then, automatic gain control amplifier 6 is used for the detecting circuit, and the output of amplifier 6 and the output of reference voltage circuit 4 are compared with each other by comparator 2, and switch circuit 3 is controlled by the comparison result thereby eliminating impulsive noise.
JP7943979A 1979-06-20 1979-06-20 Impulsive noise eliminating circuit Pending JPS562767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7943979A JPS562767A (en) 1979-06-20 1979-06-20 Impulsive noise eliminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7943979A JPS562767A (en) 1979-06-20 1979-06-20 Impulsive noise eliminating circuit

Publications (1)

Publication Number Publication Date
JPS562767A true JPS562767A (en) 1981-01-13

Family

ID=13689904

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7943979A Pending JPS562767A (en) 1979-06-20 1979-06-20 Impulsive noise eliminating circuit

Country Status (1)

Country Link
JP (1) JPS562767A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61238143A (en) * 1985-04-15 1986-10-23 Mitsubishi Electric Corp Bus type network transmitter
JPS6468842A (en) * 1987-09-10 1989-03-14 Motorola Japan Error detecting and correcting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61238143A (en) * 1985-04-15 1986-10-23 Mitsubishi Electric Corp Bus type network transmitter
JPS6468842A (en) * 1987-09-10 1989-03-14 Motorola Japan Error detecting and correcting circuit

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