JPS55124317A - Digital filter circuit - Google Patents

Digital filter circuit

Info

Publication number
JPS55124317A
JPS55124317A JP3263279A JP3263279A JPS55124317A JP S55124317 A JPS55124317 A JP S55124317A JP 3263279 A JP3263279 A JP 3263279A JP 3263279 A JP3263279 A JP 3263279A JP S55124317 A JPS55124317 A JP S55124317A
Authority
JP
Japan
Prior art keywords
counter
circuit
gate
pulse
count
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
JP3263279A
Other languages
Japanese (ja)
Inventor
Kazuo Kishimoto
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 JP3263279A priority Critical patent/JPS55124317A/en
Publication of JPS55124317A publication Critical patent/JPS55124317A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Manipulation Of Pulses (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To realize the noise elimination with no effects of the noise level and the aging, by performing the digital integration of the input signal via the up-down counter. CONSTITUTION:Signal A containing noise N is inverted 5 to open gate 6 and close gate 7 respectively. Reference pulse E sent from oscillating circuit 8 is supplied to up-down counter 9 to continue the count-up until reset pulse I arrives from timing generating circuit 11. Then gate 7 is opened to perform the count-down. Thus the most significant digit output of counter 9 features waveform J only when the contents of counter 9 are negative. And latch circuit 10 latches logic value 1 or 0 for output at the time of occurrence of pulse K through circuit 11.
JP3263279A 1979-03-20 1979-03-20 Digital filter circuit Pending JPS55124317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3263279A JPS55124317A (en) 1979-03-20 1979-03-20 Digital filter circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3263279A JPS55124317A (en) 1979-03-20 1979-03-20 Digital filter circuit

Publications (1)

Publication Number Publication Date
JPS55124317A true JPS55124317A (en) 1980-09-25

Family

ID=12364221

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3263279A Pending JPS55124317A (en) 1979-03-20 1979-03-20 Digital filter circuit

Country Status (1)

Country Link
JP (1) JPS55124317A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977717A (en) * 1982-10-27 1984-05-04 Matsushita Electric Ind Co Ltd Digital filter
JPS5977716A (en) * 1982-10-27 1984-05-04 Matsushita Electric Ind Co Ltd Digital filter
JPS59101920A (en) * 1982-12-02 1984-06-12 Matsushita Electric Ind Co Ltd Digital filter
JPS60191513A (en) * 1984-03-12 1985-09-30 Matsushita Electric Ind Co Ltd Digital type integration circuit
JPH043638A (en) * 1990-04-20 1992-01-08 Toko Denki Kk Method and device for demodulating transmitted signal
KR100548800B1 (en) * 1998-11-04 2006-04-21 페어차일드코리아반도체 주식회사 Digital filter

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5977717A (en) * 1982-10-27 1984-05-04 Matsushita Electric Ind Co Ltd Digital filter
JPS5977716A (en) * 1982-10-27 1984-05-04 Matsushita Electric Ind Co Ltd Digital filter
JPH0446005B2 (en) * 1982-10-27 1992-07-28 Matsushita Electric Ind Co Ltd
JPH0446006B2 (en) * 1982-10-27 1992-07-28 Matsushita Electric Ind Co Ltd
JPS59101920A (en) * 1982-12-02 1984-06-12 Matsushita Electric Ind Co Ltd Digital filter
JPH0530085B2 (en) * 1982-12-02 1993-05-07 Matsushita Electric Ind Co Ltd
JPS60191513A (en) * 1984-03-12 1985-09-30 Matsushita Electric Ind Co Ltd Digital type integration circuit
JPH0465569B2 (en) * 1984-03-12 1992-10-20 Matsushita Electric Ind Co Ltd
JPH043638A (en) * 1990-04-20 1992-01-08 Toko Denki Kk Method and device for demodulating transmitted signal
KR100548800B1 (en) * 1998-11-04 2006-04-21 페어차일드코리아반도체 주식회사 Digital filter

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