JPS56137450A - Runaway detection and returning device of operation processor - Google Patents

Runaway detection and returning device of operation processor

Info

Publication number
JPS56137450A
JPS56137450A JP3911180A JP3911180A JPS56137450A JP S56137450 A JPS56137450 A JP S56137450A JP 3911180 A JP3911180 A JP 3911180A JP 3911180 A JP3911180 A JP 3911180A JP S56137450 A JPS56137450 A JP S56137450A
Authority
JP
Japan
Prior art keywords
computer
pulse
counter
output
terminal
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
JP3911180A
Other languages
Japanese (ja)
Other versions
JPS5921061B2 (en
Inventor
Taishin Katayama
Hidemi Oe
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 Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
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 Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP55039111A priority Critical patent/JPS5921061B2/en
Publication of JPS56137450A publication Critical patent/JPS56137450A/en
Publication of JPS5921061B2 publication Critical patent/JPS5921061B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring

Abstract

PURPOSE:To restore the computer automatically to normal state, by detecting the runaway of microcomputer automatically from the distortion in the period of the computer and resetting the computer. CONSTITUTION:In the binary counter 31 of the microcomputer 20, the initial pulse P0 of the computer 20 is input to the reset terminal RES and the pulse P1 is output from the terminal Q1. The binary counter 32 is reset with the pulse P2 output from the Q2 terminal of the counter 31. Thus, when the period of the pulse P3 output from the Q3 terminal of the counter 32 is taken longer than the period of the pulse P2 of the counter 31, the pulse P3 keeps low level at all times. If the computer 20 runs away in th softward due to noise or failure, the reset signal PR being the output pulse of the reset signal generating circuit 40 is at low level and the computer 20 restores to normal state with the reset given to the computer 20.
JP55039111A 1980-03-28 1980-03-28 Runaway detection and recovery device for arithmetic processing unit Expired JPS5921061B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55039111A JPS5921061B2 (en) 1980-03-28 1980-03-28 Runaway detection and recovery device for arithmetic processing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55039111A JPS5921061B2 (en) 1980-03-28 1980-03-28 Runaway detection and recovery device for arithmetic processing unit

Publications (2)

Publication Number Publication Date
JPS56137450A true JPS56137450A (en) 1981-10-27
JPS5921061B2 JPS5921061B2 (en) 1984-05-17

Family

ID=12543961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55039111A Expired JPS5921061B2 (en) 1980-03-28 1980-03-28 Runaway detection and recovery device for arithmetic processing unit

Country Status (1)

Country Link
JP (1) JPS5921061B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60214050A (en) * 1984-04-10 1985-10-26 Hanshin Electric Co Ltd Detecting circuit for microcomputer runaway
JPS60214051A (en) * 1984-04-10 1985-10-26 Hanshin Electric Co Ltd Detecting circuit for microcomputer runaway
US4586180A (en) * 1982-02-26 1986-04-29 Siemens Aktiengesellschaft Microprocessor fault-monitoring circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4586180A (en) * 1982-02-26 1986-04-29 Siemens Aktiengesellschaft Microprocessor fault-monitoring circuit
JPS60214050A (en) * 1984-04-10 1985-10-26 Hanshin Electric Co Ltd Detecting circuit for microcomputer runaway
JPS60214051A (en) * 1984-04-10 1985-10-26 Hanshin Electric Co Ltd Detecting circuit for microcomputer runaway

Also Published As

Publication number Publication date
JPS5921061B2 (en) 1984-05-17

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