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GB2259381B - Duplex computer system - Google Patents

Duplex computer system

Info

Publication number
GB2259381B
GB2259381B GB9222970A GB9222970A GB2259381B GB 2259381 B GB2259381 B GB 2259381B GB 9222970 A GB9222970 A GB 9222970A GB 9222970 A GB9222970 A GB 9222970A GB 2259381 B GB2259381 B GB 2259381B
Authority
GB
United Kingdom
Prior art keywords
computer system
duplex computer
duplex
computer
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
GB9222970A
Other versions
GB9222970D0 (en
GB2259381A (en
Inventor
Hajime Akai
Hitoshi Yasui
Masayuki Nakagawa
Shunsuke Hayashi
Sadatoshi Sogo
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa 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
Priority claimed from JP1085615A external-priority patent/JP2965255B2/en
Priority claimed from JP10136289A external-priority patent/JP3291729B2/en
Priority claimed from JP1215378A external-priority patent/JP2985188B2/en
Priority claimed from JP1300616A external-priority patent/JPH03160529A/en
Priority claimed from JP1318228A external-priority patent/JPH03177933A/en
Priority claimed from JP1323086A external-priority patent/JPH03184128A/en
Priority claimed from GB9006970A external-priority patent/GB2231987B/en
Application filed by Yokogawa Electric Corp filed Critical Yokogawa Electric Corp
Publication of GB9222970D0 publication Critical patent/GB9222970D0/en
Publication of GB2259381A publication Critical patent/GB2259381A/en
Publication of GB2259381B publication Critical patent/GB2259381B/en
Application granted granted Critical
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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2038—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant with a single idle spare processing component
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/163—Interprocessor communication
    • G06F15/17—Interprocessor communication using an input/output type connection, e.g. channel, I/O port
    • 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
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
    • G06F11/2048—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant where the redundant components share neither address space nor persistent storage
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G06F11/2236—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test CPU or processors

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Software Systems (AREA)
  • Hardware Redundancy (AREA)
GB9222970A 1989-04-04 1992-11-03 Duplex computer system Expired - Fee Related GB2259381B (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP1085615A JP2965255B2 (en) 1989-04-04 1989-04-04 Redundant control arithmetic system
JP10136289A JP3291729B2 (en) 1989-04-20 1989-04-20 Redundant computer system
JP1215378A JP2985188B2 (en) 1989-08-22 1989-08-22 Redundant computer system
JP1300616A JPH03160529A (en) 1989-11-18 1989-11-18 Duplex computer system
JP1318228A JPH03177933A (en) 1989-12-07 1989-12-07 Duplex computer system
JP1323086A JPH03184128A (en) 1989-12-13 1989-12-13 Duplex computer system
GB9006970A GB2231987B (en) 1989-04-04 1990-03-28 Duplex computer system

Publications (3)

Publication Number Publication Date
GB9222970D0 GB9222970D0 (en) 1992-12-16
GB2259381A GB2259381A (en) 1993-03-10
GB2259381B true GB2259381B (en) 1993-05-26

Family

ID=27562824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9222970A Expired - Fee Related GB2259381B (en) 1989-04-04 1992-11-03 Duplex computer system

Country Status (1)

Country Link
GB (1) GB2259381B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5790791A (en) * 1995-05-12 1998-08-04 The Boeing Company Apparatus for synchronizing flight management computers where only the computer chosen to be the master received pilot inputs and transfers the inputs to the spare

Also Published As

Publication number Publication date
GB9222970D0 (en) 1992-12-16
GB2259381A (en) 1993-03-10

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19970307

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090328