GB1428407A - Error detection arrangements for data processing input/ output systems - Google Patents

Error detection arrangements for data processing input/ output systems

Info

Publication number
GB1428407A
GB1428407A GB2619072A GB2619072A GB1428407A GB 1428407 A GB1428407 A GB 1428407A GB 2619072 A GB2619072 A GB 2619072A GB 2619072 A GB2619072 A GB 2619072A GB 1428407 A GB1428407 A GB 1428407A
Authority
GB
United Kingdom
Prior art keywords
data processing
check code
peripheral
processing system
fault
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
Application number
GB2619072A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB2619072A priority Critical patent/GB1428407A/en
Publication of GB1428407A publication Critical patent/GB1428407A/en
Expired 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
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/245—Testing correct operation by using the properties of transmission codes
    • H04L1/246—Testing correct operation by using the properties of transmission codes two-level transmission codes, e.g. binary
    • 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
    • G06F11/2002—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 interconnections or communication control functionality are redundant
    • G06F11/2007—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 interconnections or communication control functionality are redundant using redundant communication media

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

1428407 Data processing system PLESSEY CO Ltd 1 June 1973 [5 June 1972] 26190/72 Heading G4A [Also in Division H4] An interfacing device of a data processing system is connectible via a switching medium PS, DS to any one of a plurality of peripherals SCP, each peripheral having a corresponding outlet from the switching medium and including means for testing that a check code, appended to an output message transmitted from the interfacing device to the peripheral, corresponds to a check code assigned to the outlet for that device. If the check code does not correspond, a fault is indicated. In the preferred arrangement, the check code identifies the outlets from a secondary switch DS, the code allocations for DSαN being cyclically shifted with respect to those for DSα1 whereby routing faults in primary switch PSα and the secondary switches can be detected. If no correct check code acknowledgement signal is produced by an addressed peripheral or if a peripheral detects a fault, the message is preserved at the interface and a fault condition is reported to the data processing system.
GB2619072A 1972-06-05 1972-06-05 Error detection arrangements for data processing input/ output systems Expired GB1428407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2619072A GB1428407A (en) 1972-06-05 1972-06-05 Error detection arrangements for data processing input/ output systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2619072A GB1428407A (en) 1972-06-05 1972-06-05 Error detection arrangements for data processing input/ output systems

Publications (1)

Publication Number Publication Date
GB1428407A true GB1428407A (en) 1976-03-17

Family

ID=10239754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2619072A Expired GB1428407A (en) 1972-06-05 1972-06-05 Error detection arrangements for data processing input/ output systems

Country Status (1)

Country Link
GB (1) GB1428407A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013394A1 (en) * 1990-03-02 1991-09-05 Sf2 Corporation Data corrections applicable to redundant arrays of independent disks
US5475697A (en) * 1990-03-02 1995-12-12 Mti Technology Corporation Non-volatile memory storage of write operation indentifier in data storage device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013394A1 (en) * 1990-03-02 1991-09-05 Sf2 Corporation Data corrections applicable to redundant arrays of independent disks
US5475697A (en) * 1990-03-02 1995-12-12 Mti Technology Corporation Non-volatile memory storage of write operation indentifier in data storage device
US5758054A (en) * 1990-03-02 1998-05-26 Emc Corporation Non-volatile memory storage of write operation identifier in data storage device

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Legal Events

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