ZA862668B - A supervisory circuit for a programmed processing unit - Google Patents

A supervisory circuit for a programmed processing unit

Info

Publication number
ZA862668B
ZA862668B ZA862668A ZA862668A ZA862668B ZA 862668 B ZA862668 B ZA 862668B ZA 862668 A ZA862668 A ZA 862668A ZA 862668 A ZA862668 A ZA 862668A ZA 862668 B ZA862668 B ZA 862668B
Authority
ZA
South Africa
Prior art keywords
processing unit
supervisory circuit
programmed processing
programmed
supervisory
Prior art date
Application number
ZA862668A
Other languages
English (en)
Inventor
Joseph Charles Engel
Original Assignee
Westinghouse 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ZA862668B publication Critical patent/ZA862668B/xx

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/05—Digital input using the sampling of an analogue quantity at regular intervals of time, input from a/d converter or output to d/a converter
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
ZA862668A 1985-04-19 1986-04-09 A supervisory circuit for a programmed processing unit ZA862668B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/725,050 US4674035A (en) 1985-04-19 1985-04-19 Supervisory circuit for a programmed processing unit

Publications (1)

Publication Number Publication Date
ZA862668B true ZA862668B (en) 1986-11-26

Family

ID=24912957

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA862668A ZA862668B (en) 1985-04-19 1986-04-09 A supervisory circuit for a programmed processing unit

Country Status (6)

Country Link
US (1) US4674035A (pt)
JP (1) JPS61245249A (pt)
BR (1) BR8601997A (pt)
CA (1) CA1252899A (pt)
MX (1) MX162253A (pt)
ZA (1) ZA862668B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811200A (en) * 1987-05-12 1989-03-07 Motorola, Inc. Multiple microprocessor watchdog system
US5398265A (en) * 1988-11-10 1995-03-14 Hughes Aircraft Company Computer subsystem reset by address dependent RC discharge
US5050172A (en) * 1989-05-08 1991-09-17 Westinghouse Electric Corp. Microcomputer controlled electric contactor with power loss memory
FR2674633B1 (fr) * 1991-03-28 1995-06-23 Sgs Thomson Microelectronics Circuit de detection d'un seuil haut d'une tension d'alimentation.
US5388254A (en) * 1992-03-27 1995-02-07 International Business Machines Corporation Method and means for limiting duration of input/output (I/O) requests
US5649098A (en) * 1995-11-14 1997-07-15 Maxim Integrated Products Methods and apparatus for disabling a watchdog function
US6463546B1 (en) 1996-08-12 2002-10-08 Papst-Motoren Gmbh & Co. Kg Method and apparatus for monitoring a microprocessor
WO2008091960A1 (en) * 2007-01-23 2008-07-31 Protek Devices, Lp Digital control system and method
US9032258B2 (en) * 2012-09-14 2015-05-12 Infineon Technologies Ag Safety system challenge-and-response using modified watchdog timer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055777A (en) * 1976-11-02 1977-10-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Window comparator
JPS5375741A (en) * 1976-12-16 1978-07-05 Fujitsu Ltd Test equipment for data processing unit
JPS5557956A (en) * 1978-10-25 1980-04-30 Nissan Motor Co Ltd Malfunction prevention unit of microcomputer
JPS57155601A (en) * 1981-03-20 1982-09-25 Nippon Denso Co Ltd Car safety device
US4410991A (en) * 1981-06-03 1983-10-18 Gte Laboratories Incorporated Supervisory control apparatus
US4434403A (en) * 1981-08-24 1984-02-28 Burroughs Corporation Universal reset circuit for digital circuitry
US4586179A (en) * 1983-12-09 1986-04-29 Zenith Electronics Corporation Microprocessor reset with power level detection and watchdog timer

Also Published As

Publication number Publication date
MX162253A (es) 1991-04-18
US4674035A (en) 1987-06-16
BR8601997A (pt) 1987-01-06
JPS61245249A (ja) 1986-10-31
CA1252899A (en) 1989-04-18

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