GB2310514B - Watchdog circuit - Google Patents

Watchdog circuit

Info

Publication number
GB2310514B
GB2310514B GB9702549A GB9702549A GB2310514B GB 2310514 B GB2310514 B GB 2310514B GB 9702549 A GB9702549 A GB 9702549A GB 9702549 A GB9702549 A GB 9702549A GB 2310514 B GB2310514 B GB 2310514B
Authority
GB
United Kingdom
Prior art keywords
watchdog circuit
watchdog
circuit
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.)
Expired - Fee Related
Application number
GB9702549A
Other versions
GB9702549D0 (en
GB2310514A (en
Inventor
David Fausto Collins
Adrian Albert Mckinstry
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.)
Fujitsu Services Ltd
Original Assignee
Fujitsu Services 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 Fujitsu Services Ltd filed Critical Fujitsu Services Ltd
Publication of GB9702549D0 publication Critical patent/GB9702549D0/en
Publication of GB2310514A publication Critical patent/GB2310514A/en
Application granted granted Critical
Publication of GB2310514B publication Critical patent/GB2310514B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
GB9702549A 1996-02-20 1997-02-07 Watchdog circuit Expired - Fee Related GB2310514B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9603519.1A GB9603519D0 (en) 1996-02-20 1996-02-20 Watchdog circuit

Publications (3)

Publication Number Publication Date
GB9702549D0 GB9702549D0 (en) 1997-03-26
GB2310514A GB2310514A (en) 1997-08-27
GB2310514B true GB2310514B (en) 1998-01-21

Family

ID=10789058

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9603519.1A Pending GB9603519D0 (en) 1996-02-20 1996-02-20 Watchdog circuit
GB9702549A Expired - Fee Related GB2310514B (en) 1996-02-20 1997-02-07 Watchdog circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9603519.1A Pending GB9603519D0 (en) 1996-02-20 1996-02-20 Watchdog circuit

Country Status (1)

Country Link
GB (2) GB9603519D0 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19855661C1 (en) * 1998-12-02 2000-05-11 Siemens Nixdorf Banking Syst Arrangement for monitoring an electrical device
US20040207440A1 (en) * 2003-04-17 2004-10-21 Naysen Robertson Electrical circuit for controling another circuit or system
GB2415271A (en) * 2004-06-16 2005-12-21 Sendo Int Ltd Computing device with watchdog timer
JP5246230B2 (en) * 2010-09-13 2013-07-24 株式会社デンソー Electronic control device for vehicle
US10089164B2 (en) * 2015-02-27 2018-10-02 Microchip Technology Incorporated Watchdog timer
US11354182B1 (en) * 2019-12-10 2022-06-07 Cisco Technology, Inc. Internal watchdog two stage extension

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120428A (en) * 1982-05-19 1983-11-30 Nissan Motor Monitoring apparatus for control system with microcomputer
EP0223130A2 (en) * 1985-10-31 1987-05-27 Alcatel Satmam Electronic postage meter circuitry
US4809280A (en) * 1984-06-12 1989-02-28 Omron Tateisi Electronics Co. Microcomputer system with watchdog timer
GB2213966A (en) * 1988-01-14 1989-08-23 Hella Kg Hueck & Co Device for monitoring electronic equipment
US5440603A (en) * 1993-05-19 1995-08-08 Mitsubishi Denki Kabushiki Kaisha Watch-dog timer circuit and a microcomputer equipped therewith

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120428A (en) * 1982-05-19 1983-11-30 Nissan Motor Monitoring apparatus for control system with microcomputer
US4809280A (en) * 1984-06-12 1989-02-28 Omron Tateisi Electronics Co. Microcomputer system with watchdog timer
EP0223130A2 (en) * 1985-10-31 1987-05-27 Alcatel Satmam Electronic postage meter circuitry
GB2213966A (en) * 1988-01-14 1989-08-23 Hella Kg Hueck & Co Device for monitoring electronic equipment
US5440603A (en) * 1993-05-19 1995-08-08 Mitsubishi Denki Kabushiki Kaisha Watch-dog timer circuit and a microcomputer equipped therewith

Also Published As

Publication number Publication date
GB9702549D0 (en) 1997-03-26
GB9603519D0 (en) 1996-04-17
GB2310514A (en) 1997-08-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20040207