JPS5447562A - Noise eliminating circuit - Google Patents

Noise eliminating circuit

Info

Publication number
JPS5447562A
JPS5447562A JP11401377A JP11401377A JPS5447562A JP S5447562 A JPS5447562 A JP S5447562A JP 11401377 A JP11401377 A JP 11401377A JP 11401377 A JP11401377 A JP 11401377A JP S5447562 A JPS5447562 A JP S5447562A
Authority
JP
Japan
Prior art keywords
noise
signal
analog
output signal
supplied
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
JP11401377A
Other languages
Japanese (ja)
Inventor
Sadanobu Ishida
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 JP11401377A priority Critical patent/JPS5447562A/en
Publication of JPS5447562A publication Critical patent/JPS5447562A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE: To eliminate the noise generating the signal featuring the same amplitude and phase to the noise of the clock signal of the analog/digital system from the same clock signal and then applying the signal to the output signal of the system with the polarity inversed.
CONSTITUTION: System clock signal (a) led out from analog/digital system 1 is supplied to generate output signal (c) of the same shape as the noise waveform after delay 3 for a fixed period and differentiation 4. Signal (c) is coincided with the noise level via adjusters 5 and then supplied to the negative and positive input terminals of operational amplifier 6 along with analog signal (b) which is sent from system 1 and contains the noise. For amplifier 6, the output signal of adjuster 5 is supplied with an opposite polarity to the noise contained in the analog signal, and then the noise is offset to obtain analog output signal (d) free from the noise. In this way, the low-level noise mixed into the analog signal can be eliminated through a simple circuit
COPYRIGHT: (C)1979,JPO&Japio
JP11401377A 1977-09-22 1977-09-22 Noise eliminating circuit Pending JPS5447562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11401377A JPS5447562A (en) 1977-09-22 1977-09-22 Noise eliminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11401377A JPS5447562A (en) 1977-09-22 1977-09-22 Noise eliminating circuit

Publications (1)

Publication Number Publication Date
JPS5447562A true JPS5447562A (en) 1979-04-14

Family

ID=14626858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11401377A Pending JPS5447562A (en) 1977-09-22 1977-09-22 Noise eliminating circuit

Country Status (1)

Country Link
JP (1) JPS5447562A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618646U (en) * 1979-07-23 1981-02-18
JPS5625834A (en) * 1979-08-09 1981-03-12 Sony Corp Fm receiver
JPS58125947A (en) * 1982-01-21 1983-07-27 Matsushita Electric Ind Co Ltd Interphone device
JPS60203020A (en) * 1984-03-27 1985-10-14 Toko Inc Noise eliminatng method of analog-to-digital converter
JPS6226949U (en) * 1985-07-31 1987-02-18

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618646U (en) * 1979-07-23 1981-02-18
JPS6217960Y2 (en) * 1979-07-23 1987-05-08
JPS5625834A (en) * 1979-08-09 1981-03-12 Sony Corp Fm receiver
JPS6257131B2 (en) * 1979-08-09 1987-11-30 Sony Corp
JPS58125947A (en) * 1982-01-21 1983-07-27 Matsushita Electric Ind Co Ltd Interphone device
JPS60203020A (en) * 1984-03-27 1985-10-14 Toko Inc Noise eliminatng method of analog-to-digital converter
JPS6226949U (en) * 1985-07-31 1987-02-18

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