JPS5787232A - Input signal reading circuit - Google Patents

Input signal reading circuit

Info

Publication number
JPS5787232A
JPS5787232A JP55163141A JP16314180A JPS5787232A JP S5787232 A JPS5787232 A JP S5787232A JP 55163141 A JP55163141 A JP 55163141A JP 16314180 A JP16314180 A JP 16314180A JP S5787232 A JPS5787232 A JP S5787232A
Authority
JP
Japan
Prior art keywords
value
low
counter
reading circuit
output
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
JP55163141A
Other languages
Japanese (ja)
Inventor
Nagayasu Harada
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 JP55163141A priority Critical patent/JPS5787232A/en
Publication of JPS5787232A publication Critical patent/JPS5787232A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To eliminate a chattering noise stably, by sampling and counting input data and by outputting a low output when the count value is higher than a constant value and by outputting a high output when it is lower than the constant value and by supplying these outputs to a reading circuit. CONSTITUTION:After reset by a reset pulse 6 from a timing pulse generating circuit 2, an integral counter 1 starts counting the section of input data 4 by sampling clocks 5. When data 4 is high, a high value is much considerably at the sampling time even if a low value is generated by a noise or the like, and the value of the counter 1 exceeds a constant value, and therefore, an integral output 7 outputs a high signal to a reading circuit 3 till the generation of a read timing pulse 8, and simultaneously, counting of the counter 1 is inhibited through a gate. When data 4 is low, a low value is much considerably at the sampling time even if a high section is generated by a noise or the like, and the count value of the counter 1 does not exceed the constant value, and therefore, the integral output is low stably.
JP55163141A 1980-11-18 1980-11-18 Input signal reading circuit Pending JPS5787232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163141A JPS5787232A (en) 1980-11-18 1980-11-18 Input signal reading circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163141A JPS5787232A (en) 1980-11-18 1980-11-18 Input signal reading circuit

Publications (1)

Publication Number Publication Date
JPS5787232A true JPS5787232A (en) 1982-05-31

Family

ID=15767985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163141A Pending JPS5787232A (en) 1980-11-18 1980-11-18 Input signal reading circuit

Country Status (1)

Country Link
JP (1) JPS5787232A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214715A (en) * 1986-03-15 1987-09-21 Fuji Facom Corp Digital filter circuit system
EP0343317A3 (en) * 1988-05-26 1990-01-24 Hitachi, Ltd. Filter circuit
US6008672A (en) * 1996-11-11 1999-12-28 Nec Corporation Input signal reading circuit having a small delay and a high fidelity

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62214715A (en) * 1986-03-15 1987-09-21 Fuji Facom Corp Digital filter circuit system
EP0343317A3 (en) * 1988-05-26 1990-01-24 Hitachi, Ltd. Filter circuit
US4961014A (en) * 1988-05-26 1990-10-02 Toshiro Kasahara Filter circuit utilizing reversible counter for generating a satisfactory hysteresis
US6008672A (en) * 1996-11-11 1999-12-28 Nec Corporation Input signal reading circuit having a small delay and a high fidelity

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