JPS5445532A - Interlock circuit - Google Patents

Interlock circuit

Info

Publication number
JPS5445532A
JPS5445532A JP11280477A JP11280477A JPS5445532A JP S5445532 A JPS5445532 A JP S5445532A JP 11280477 A JP11280477 A JP 11280477A JP 11280477 A JP11280477 A JP 11280477A JP S5445532 A JPS5445532 A JP S5445532A
Authority
JP
Japan
Prior art keywords
pulse
synchronizing
signal
interlock circuit
circuits
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.)
Granted
Application number
JP11280477A
Other languages
Japanese (ja)
Other versions
JPS5828966B2 (en
Inventor
Seiichiro Tamai
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP52112804A priority Critical patent/JPS5828966B2/en
Publication of JPS5445532A publication Critical patent/JPS5445532A/en
Publication of JPS5828966B2 publication Critical patent/JPS5828966B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/02—Details

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Electronic Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Bus Control (AREA)

Abstract

PURPOSE:To constitute the interlock circuit with priority, by using synchronous FF as the receiver of the switch input signal, using pulse different in frequency for the synchronizing signal of FF and giving priority between switch input signals. CONSTITUTION:The on-off condition of switches 2 to 4 by DC power supply 1 is converted into digital signal with circuits I to I'' and is given to synchronizing type FF II to II''. The synchronizing pulse obtained from the synchronizing signal set circuits III to III'' demultiplies the reference pulse (d) into two and further, demultiplies the pulse (e) having suitable phase delay into two, and constitutes the pulse having the frequency divided ratio and the phase lag as the pulse f having suitable phase delay. The gate circuits IV to IV'' setting the reset signal of FF are OR circuit inputting binary outputs (a), (b),...of FF and the output of the interlock circuit is given as Q output of FF.
JP52112804A 1977-09-19 1977-09-19 interlock circuit Expired JPS5828966B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52112804A JPS5828966B2 (en) 1977-09-19 1977-09-19 interlock circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52112804A JPS5828966B2 (en) 1977-09-19 1977-09-19 interlock circuit

Publications (2)

Publication Number Publication Date
JPS5445532A true JPS5445532A (en) 1979-04-10
JPS5828966B2 JPS5828966B2 (en) 1983-06-20

Family

ID=14595935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52112804A Expired JPS5828966B2 (en) 1977-09-19 1977-09-19 interlock circuit

Country Status (1)

Country Link
JP (1) JPS5828966B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886403A (en) * 1972-02-17 1973-11-15
JPS4976526U (en) * 1972-10-18 1974-07-03

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886403A (en) * 1972-02-17 1973-11-15
JPS4976526U (en) * 1972-10-18 1974-07-03

Also Published As

Publication number Publication date
JPS5828966B2 (en) 1983-06-20

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