JPS57124928A - Edge detection circuit - Google Patents

Edge detection circuit

Info

Publication number
JPS57124928A
JPS57124928A JP56009924A JP992481A JPS57124928A JP S57124928 A JPS57124928 A JP S57124928A JP 56009924 A JP56009924 A JP 56009924A JP 992481 A JP992481 A JP 992481A JP S57124928 A JPS57124928 A JP S57124928A
Authority
JP
Japan
Prior art keywords
shift register
flop
flip
output
gate
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
JP56009924A
Other languages
Japanese (ja)
Inventor
Kenji Kaneko
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP56009924A priority Critical patent/JPS57124928A/en
Publication of JPS57124928A publication Critical patent/JPS57124928A/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

Landscapes

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

Abstract

PURPOSE:To prevent malfunction due to noise, by inputting a digital time series signal to a shift register, eliminating narrow pulses through logic of decision by majority of outputs of each stage of the shift register and detecting edges. CONSTITUTION:A digital time series signal applied to an input terminal 5 is read into a shift register 8 with a clock pulse applied to a terminal 6. When outputs QA-QD of each stage of the shift register 8 have >=3 ''1'', ''1'' is outputted from a gate 13a and a flip-flop 14 is set. When inversion QA-QD of each output of the shift register 8 have >=3 ''1'', ''1'' output is broughr out of a gate 13b to reset the flip-flop 14 and to exclude narrow pulses. The edge of the output of the flip-flop 14 is detected at a flip-flop 15 and an exclusive logical sum circuit 16 to obtain an output.
JP56009924A 1981-01-26 1981-01-26 Edge detection circuit Pending JPS57124928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56009924A JPS57124928A (en) 1981-01-26 1981-01-26 Edge detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56009924A JPS57124928A (en) 1981-01-26 1981-01-26 Edge detection circuit

Publications (1)

Publication Number Publication Date
JPS57124928A true JPS57124928A (en) 1982-08-04

Family

ID=11733628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56009924A Pending JPS57124928A (en) 1981-01-26 1981-01-26 Edge detection circuit

Country Status (1)

Country Link
JP (1) JPS57124928A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62281611A (en) * 1986-05-30 1987-12-07 Nec Home Electronics Ltd Signal edge detector
JPS63163028U (en) * 1987-04-10 1988-10-25
JPS6432518A (en) * 1987-07-28 1989-02-02 Matsushita Electric Works Ltd Signal change point detecting system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5232655A (en) * 1975-09-09 1977-03-12 Nec Corp Logic low-pass filter circuit
JPS5324256A (en) * 1976-08-19 1978-03-06 Fuji Electric Co Ltd Fulse formation circuit square signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5232655A (en) * 1975-09-09 1977-03-12 Nec Corp Logic low-pass filter circuit
JPS5324256A (en) * 1976-08-19 1978-03-06 Fuji Electric Co Ltd Fulse formation circuit square signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62281611A (en) * 1986-05-30 1987-12-07 Nec Home Electronics Ltd Signal edge detector
JPS63163028U (en) * 1987-04-10 1988-10-25
JPS6432518A (en) * 1987-07-28 1989-02-02 Matsushita Electric Works Ltd Signal change point detecting system

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