DE69223990D1 - Auch gegen mehrfachfehler sicherer, fehlertoleranter taktgeber - Google Patents

Auch gegen mehrfachfehler sicherer, fehlertoleranter taktgeber

Info

Publication number
DE69223990D1
DE69223990D1 DE69223990T DE69223990T DE69223990D1 DE 69223990 D1 DE69223990 D1 DE 69223990D1 DE 69223990 T DE69223990 T DE 69223990T DE 69223990 T DE69223990 T DE 69223990T DE 69223990 D1 DE69223990 D1 DE 69223990D1
Authority
DE
Germany
Prior art keywords
fault
clock
tolerant
safe
tolerant clock
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 - Lifetime
Application number
DE69223990T
Other languages
English (en)
Other versions
DE69223990T2 (de
Inventor
James Krause
Matthew Englehart
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Publication of DE69223990D1 publication Critical patent/DE69223990D1/de
Application granted granted Critical
Publication of DE69223990T2 publication Critical patent/DE69223990T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1604—Error detection or correction of the data by redundancy in hardware where the fault affects the clock signals of a processing unit and the redundancy is at or within the level of clock signal generation hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/12—Synchronisation of different clock signals provided by a plurality of clock generators
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
    • G06F11/187—Voting techniques
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1679—Temporal synchronisation or re-synchronisation of redundant processing components at clock signal level
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
    • G06F11/183—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits by voting, the voting not being performed by the redundant components
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/88—Monitoring involving counting
DE69223990T 1991-11-27 1992-11-24 Auch gegen mehrfachfehler sicherer, fehlertoleranter taktgeber Expired - Lifetime DE69223990T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/800,904 US5404363A (en) 1991-11-27 1991-11-27 Two-fail-operational fault-tolerant multiple clock system
PCT/US1992/010435 WO1993011489A1 (en) 1991-11-27 1992-11-24 Multiple-fail-operational fault tolerant clock

Publications (2)

Publication Number Publication Date
DE69223990D1 true DE69223990D1 (de) 1998-02-12
DE69223990T2 DE69223990T2 (de) 1998-07-02

Family

ID=25179677

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69223990T Expired - Lifetime DE69223990T2 (de) 1991-11-27 1992-11-24 Auch gegen mehrfachfehler sicherer, fehlertoleranter taktgeber

Country Status (6)

Country Link
US (1) US5404363A (de)
EP (1) EP0614552B1 (de)
JP (1) JP3445270B2 (de)
CA (1) CA2120333C (de)
DE (1) DE69223990T2 (de)
WO (1) WO1993011489A1 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537655A (en) * 1992-09-28 1996-07-16 The Boeing Company Synchronized fault tolerant reset
JPH0764957A (ja) * 1993-08-23 1995-03-10 Mitsubishi Electric Corp タイマ装置
US5537583A (en) * 1994-10-11 1996-07-16 The Boeing Company Method and apparatus for a fault tolerant clock with dynamic reconfiguration
US5557156A (en) * 1994-12-02 1996-09-17 Digital Instruments, Inc. Scan control for scanning probe microscopes
US5784386A (en) * 1996-07-03 1998-07-21 General Signal Corporation Fault tolerant synchronous clock distribution
KR100201333B1 (ko) * 1996-09-11 1999-06-15 유기범 클럭의 페일 판별 장치
US5923611A (en) * 1996-12-20 1999-07-13 Micron Technology, Inc. Memory having a plurality of external clock signal inputs
US6272647B1 (en) 1998-11-20 2001-08-07 Honeywell Inc. Fault tolerant clock voter with recovery
JP3492655B2 (ja) 2001-08-20 2004-02-03 エヌイーシーシステムテクノロジー株式会社 電子機器
US7363546B2 (en) * 2002-07-31 2008-04-22 Sun Microsystems, Inc. Latent fault detector
US7089442B2 (en) * 2003-02-07 2006-08-08 Rambus Inc. Fault-tolerant clock generator
US7296170B1 (en) * 2004-01-23 2007-11-13 Zilog, Inc. Clock controller with clock source fail-safe logic
US8315274B2 (en) * 2006-03-29 2012-11-20 Honeywell International Inc. System and method for supporting synchronous system communications and operations
US7562247B2 (en) * 2006-05-16 2009-07-14 International Business Machines Corporation Providing independent clock failover for scalable blade servers
US8972772B2 (en) * 2011-02-24 2015-03-03 The Charles Stark Draper Laboratory, Inc. System and method for duplexed replicated computing
JP5402964B2 (ja) * 2011-03-11 2014-01-29 オムロン株式会社 相互監視システム、管理装置およびシステム
EP2573643B1 (de) * 2011-07-26 2015-09-23 Huawei Technologies Co., Ltd. Computersystem und uhrenkonfigurationsverfahren dafür
US9103845B2 (en) * 2013-03-08 2015-08-11 Freescale Semiconductor Inc. System and method for reducing offset variation in multifunction sensor devices
US9992010B2 (en) * 2015-11-24 2018-06-05 The Charles Stark Draper Laboratory, Inc. System and method for augmenting duplexed replicated computing
CN110999086B (zh) * 2017-10-16 2024-03-08 微芯片技术股份有限公司 容错时钟监视器系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4239982A (en) * 1978-06-14 1980-12-16 The Charles Stark Draper Laboratory, Inc. Fault-tolerant clock system
DE3023624C1 (de) * 1980-06-24 1981-10-01 Siemens AG, 1000 Berlin und 8000 München Taktgebareanordnung zum Erzeugen von Stauerimpulsen fuer ein redundantes Datenverarbeitungssystem
US4386426A (en) * 1980-11-03 1983-05-31 Burlington Industries, Inc. Data transmission system
US4644498A (en) * 1983-04-04 1987-02-17 General Electric Company Fault-tolerant real time clock
US4696019A (en) * 1984-09-19 1987-09-22 United Technologies Corporation Multi-channel clock synchronizer
US4683570A (en) * 1985-09-03 1987-07-28 General Electric Company Self-checking digital fault detector for modular redundant real time clock
US4956842A (en) * 1988-11-16 1990-09-11 Sundstrand Corporation Diagnostic system for a watchdog timer
US4984241A (en) * 1989-01-23 1991-01-08 The Boeing Company Tightly synchronized fault tolerant clock
US4979191A (en) * 1989-05-17 1990-12-18 The Boeing Company Autonomous N-modular redundant fault tolerant clock system
US5233617A (en) * 1990-04-13 1993-08-03 Vlsi Technology, Inc. Asynchronous latch circuit and register

Also Published As

Publication number Publication date
US5404363A (en) 1995-04-04
EP0614552B1 (de) 1998-01-07
CA2120333C (en) 2003-10-14
CA2120333A1 (en) 1993-06-10
WO1993011489A1 (en) 1993-06-10
DE69223990T2 (de) 1998-07-02
JP3445270B2 (ja) 2003-09-08
JPH07501642A (ja) 1995-02-16
EP0614552A1 (de) 1994-09-14

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition