GB2262999B - A fault tolerant processing apparatus - Google Patents

A fault tolerant processing apparatus

Info

Publication number
GB2262999B
GB2262999B GB9127552A GB9127552A GB2262999B GB 2262999 B GB2262999 B GB 2262999B GB 9127552 A GB9127552 A GB 9127552A GB 9127552 A GB9127552 A GB 9127552A GB 2262999 B GB2262999 B GB 2262999B
Authority
GB
United Kingdom
Prior art keywords
communications
host
processor
switch
operations
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
GB9127552A
Other versions
GB2262999A (en
GB9127552D0 (en
Inventor
Frederick Finlay
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.)
I P TECHN Ltd
Original Assignee
I P TECHN 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 I P TECHN Ltd filed Critical I P TECHN Ltd
Priority to GB9127552A priority Critical patent/GB2262999B/en
Priority to BE9200046A priority patent/BE1003773A7/en
Publication of GB9127552D0 publication Critical patent/GB9127552D0/en
Publication of GB2262999A publication Critical patent/GB2262999A/en
Application granted granted Critical
Publication of GB2262999B publication Critical patent/GB2262999B/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
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1443—Transmit or communication errors
    • 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
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/805—Real-time
    • 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
    • G06F2201/87—Monitoring of transactions

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Processing Or Creating Images (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

A fault tolerant processing apparatus 1 includes an off-host controller 12 which monitors operations of a communications circuit 13 and, on detection of a communications fault, sets a switch to the offline state and retrieves a remote host processor simulation programs from a fixed disk drive 4. This allows a local processor 2 to carry out processing operations while there is a communications fault. When communications is re-established the switch is set to the recovery state and captured data resulting from off-host processing is trickle fed to the host processor provided batch processing operations are not taking place at the host processor. The off-host controller 12 automatically generates reconnection signals while offline. Validation operations are carried out on data which is being trickle fed and access to the processor 2 may not be achieved unless security procedures are adhered to after the setting of the switch to the online state after recovery of data. <IMAGE>
GB9127552A 1991-12-31 1991-12-31 A fault tolerant processing apparatus Expired - Fee Related GB2262999B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9127552A GB2262999B (en) 1991-12-31 1991-12-31 A fault tolerant processing apparatus
BE9200046A BE1003773A7 (en) 1991-12-31 1992-01-17 Apparatus for fault tolerant treatment.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9127552A GB2262999B (en) 1991-12-31 1991-12-31 A fault tolerant processing apparatus

Publications (3)

Publication Number Publication Date
GB9127552D0 GB9127552D0 (en) 1992-02-19
GB2262999A GB2262999A (en) 1993-07-07
GB2262999B true GB2262999B (en) 1995-04-26

Family

ID=10706928

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9127552A Expired - Fee Related GB2262999B (en) 1991-12-31 1991-12-31 A fault tolerant processing apparatus

Country Status (2)

Country Link
BE (1) BE1003773A7 (en)
GB (1) GB2262999B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1866797A4 (en) * 2005-03-16 2010-08-04 Guidance Software Inc System and method for searching for static data in a computer investigation system

Also Published As

Publication number Publication date
GB2262999A (en) 1993-07-07
GB9127552D0 (en) 1992-02-19
BE1003773A7 (en) 1992-06-09

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Legal Events

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

Effective date: 20041231