JPS5770470A - Discriminating system for signal time length - Google Patents

Discriminating system for signal time length

Info

Publication number
JPS5770470A
JPS5770470A JP14775880A JP14775880A JPS5770470A JP S5770470 A JPS5770470 A JP S5770470A JP 14775880 A JP14775880 A JP 14775880A JP 14775880 A JP14775880 A JP 14775880A JP S5770470 A JPS5770470 A JP S5770470A
Authority
JP
Japan
Prior art keywords
signal
time length
counter
analog signal
counting
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
JP14775880A
Other languages
Japanese (ja)
Inventor
Yasuhiko Miwata
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14775880A priority Critical patent/JPS5770470A/en
Publication of JPS5770470A publication Critical patent/JPS5770470A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

PURPOSE:To discriminate signal time length without using any clock generator by counting the number of waves of an incoming analog signal and comparing the same with the number of the set time calculated from the basic number of this signal. CONSTITUTION:An analog signal S4 having time length L coming to an input terminal (a) is inputted via an amplifier 1 and a rectifier 8 to a waveform shaping circuit 9 by which it is shaped to a square wave signal S6. The signal S6 is inputted to a controller 7, which starts a counter 4 and a comparator 5. Also, it is the clock signal for the counter 4 and the number thereof, that is, the number of the repeating waves of the analog signal S4, is counted with the counter 4. The result of this counting is compared with the reference number generated in a reference time generator 6, and the result thereof is outputted at a logical level from an output terminal (b). Thereby, the cost is lowered without requiring any special clock generator.
JP14775880A 1980-10-22 1980-10-22 Discriminating system for signal time length Pending JPS5770470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14775880A JPS5770470A (en) 1980-10-22 1980-10-22 Discriminating system for signal time length

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14775880A JPS5770470A (en) 1980-10-22 1980-10-22 Discriminating system for signal time length

Publications (1)

Publication Number Publication Date
JPS5770470A true JPS5770470A (en) 1982-04-30

Family

ID=15437486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14775880A Pending JPS5770470A (en) 1980-10-22 1980-10-22 Discriminating system for signal time length

Country Status (1)

Country Link
JP (1) JPS5770470A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005287957A (en) * 2004-04-02 2005-10-20 Yamasa Kk Slot machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005287957A (en) * 2004-04-02 2005-10-20 Yamasa Kk Slot machine

Similar Documents

Publication Publication Date Title
JPS5770470A (en) Discriminating system for signal time length
JPS57149979A (en) Single channel frequency meter
JPS56104577A (en) Field distinction circuit
GB1144549A (en) Pulse modulation system
JPS56138330A (en) Noise rejector for constant input judgement
JPS56154627A (en) Detector for loose part
JPS57170662A (en) Signal discrimination circuit
SU712812A1 (en) Digital meter of time-related position of radio pulse signals
SU966869A1 (en) Pulse shaper
JPS56160665A (en) Corona detecting device for electric equipment
JPS5780826A (en) Waveform shaping circuit
JPS536080A (en) Frequency detection circuit
JPS55153457A (en) Data signal reproducing unit
SU1605229A1 (en) Generator of random pulse stream
SU1016798A1 (en) Logarithmic device
JPS57129071A (en) Field discriminating circuit
ES437628A1 (en) Dial pulse detector
JPS55114969A (en) Battery life detection system
JPS57207495A (en) Signal discriminator
JPS57103067A (en) Measuring method of pulse waveform
JPS5521670A (en) Tone detection system
JPS57176360A (en) Control device of knock
GB897051A (en) Improvements in or relating to pulse responsive circuits
JPS5778210A (en) Filter circuit
JPS5672553A (en) Burst error detection circuit