JPS5767310A - Noise eliminating device following frequency - Google Patents

Noise eliminating device following frequency

Info

Publication number
JPS5767310A
JPS5767310A JP14248680A JP14248680A JPS5767310A JP S5767310 A JPS5767310 A JP S5767310A JP 14248680 A JP14248680 A JP 14248680A JP 14248680 A JP14248680 A JP 14248680A JP S5767310 A JPS5767310 A JP S5767310A
Authority
JP
Japan
Prior art keywords
filter
frequency
signal
periodic
band pass
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
JP14248680A
Other languages
Japanese (ja)
Inventor
Takayoshi Hirata
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP14248680A priority Critical patent/JPS5767310A/en
Publication of JPS5767310A publication Critical patent/JPS5767310A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To extract periodic components from an input signal and to eliminate the periodic noise, by controlling a filter having a comb-teeth characteristic, which is operated as a band pass or stop filter, by the input signal. CONSTITUTION:A periodic signal is applied to a terminal 1. One is given to a band pass filter 3, and the other is given to a filter 8 having a comb-teeth characteristic. The fundamental frequency or one of higher harmonics at most is taken out by the pass band width of the band pass filter 3. Signal components taken out by the band pass filter 3 are converted to a voltage proportional to the frequency by a frequency-voltage converter 4 and is applied to a voltage control oscillator 6 and is converted to a frequency proportional to the voltage. This frequency is divided by a clock signal generator and becomes a driving signal for the filter 8. Consequently, the characteristic of the filter 8 is changed in accordance with the input signal to extract a periodic signal and eliminate a periodic noise.
JP14248680A 1980-10-14 1980-10-14 Noise eliminating device following frequency Pending JPS5767310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14248680A JPS5767310A (en) 1980-10-14 1980-10-14 Noise eliminating device following frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14248680A JPS5767310A (en) 1980-10-14 1980-10-14 Noise eliminating device following frequency

Publications (1)

Publication Number Publication Date
JPS5767310A true JPS5767310A (en) 1982-04-23

Family

ID=15316434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14248680A Pending JPS5767310A (en) 1980-10-14 1980-10-14 Noise eliminating device following frequency

Country Status (1)

Country Link
JP (1) JPS5767310A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746404B1 (en) * 1999-08-16 2012-01-11 Prüftechnik Dieter Busch AG Procedure and device for determining damages of cyclically moving machine elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746404B1 (en) * 1999-08-16 2012-01-11 Prüftechnik Dieter Busch AG Procedure and device for determining damages of cyclically moving machine elements

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