GB1284506A - Improvements in or relating to data processing systems - Google Patents

Improvements in or relating to data processing systems

Info

Publication number
GB1284506A
GB1284506A GB6071370A GB6071370A GB1284506A GB 1284506 A GB1284506 A GB 1284506A GB 6071370 A GB6071370 A GB 6071370A GB 6071370 A GB6071370 A GB 6071370A GB 1284506 A GB1284506 A GB 1284506A
Authority
GB
United Kingdom
Prior art keywords
store
data
stores
read
processors
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
GB6071370A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1284506A publication Critical patent/GB1284506A/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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1641—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components
    • G06F11/1645—Error detection by comparing the output of redundant processing systems where the comparison is not performed by the redundant processing components and the comparison itself uses redundant hardware
    • 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
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/1633—Error detection by comparing the output of redundant processing systems using mutual exchange of the output between the redundant processing components
    • 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
    • G06F11/1629—Error detection by comparing the output of redundant processing systems
    • G06F11/165—Error detection by comparing the output of redundant processing systems with continued operation after detection of the error
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54541—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme using multi-processor systems
    • H04Q3/54558—Redundancy, stand-by
    • 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
    • G06F11/1666—Error detection or correction of the data by redundancy in hardware where the redundant component is memory or memory area
    • 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

Abstract

1284506 Error and fault checking SIEMENS AG 22 Dec 1970 [29 Dec 1969] 60713/70 Heading G4A A data processing system, e.g. a system operating in real time to control a telephone exchange, comprises two processors each having a number of associated stores and synchronously effecting identical operations, and two comparators, one for each processor, which indicate whether the data produced by the processors are identical, the arrangement being such that where produced store addresses are non-identical a read cycle only is performed on the store in which data was to be stored and in the case of identical outputs a read/write cycle is performed to store the data at the addressed location. When a mismatch is detected in the processor addressing outputs diagnostic programmes are initiated and in the case where one of the processors is found to be faulty, further processing or store accessing is performed using the other, correctly functioning, processor. Store control devices are provided for operating the stores and the coded outputs from these devices are also compared, the correctly functioning device taking over control of all the stores if one of the devices is found to be faulty. The address data may also be checked, inadmissible addresses being used to cause a read cycle only to be effected on the appropriate store. Parity checks may also be made on data to be written into or read from the stores.
GB6071370A 1969-12-29 1970-12-22 Improvements in or relating to data processing systems Expired GB1284506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691965314 DE1965314C3 (en) 1969-12-29 1969-12-29 Method for operating a data processing arrangement with two data processing systems

Publications (1)

Publication Number Publication Date
GB1284506A true GB1284506A (en) 1972-08-09

Family

ID=5755217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6071370A Expired GB1284506A (en) 1969-12-29 1970-12-22 Improvements in or relating to data processing systems

Country Status (8)

Country Link
AT (1) AT304652B (en)
BE (1) BE760976A (en)
CH (1) CH521635A (en)
DE (1) DE1965314C3 (en)
FR (1) FR2074209A5 (en)
GB (1) GB1284506A (en)
LU (1) LU62319A1 (en)
NL (1) NL165861C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959836A (en) * 1987-12-09 1990-09-25 Siemens Transmission Systems, Inc. Register robustness improvement circuit and method
US6009935A (en) * 1996-05-15 2000-01-04 Bg Plc Radiators
EP1860558A3 (en) * 2006-05-25 2009-01-21 Honeywell International Inc. Method and apparatus for latent fault memory scrub in memory upon which a computer hardware strongly relies

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236718C3 (en) * 1972-07-26 1978-06-29 Siemens Ag, 1000 Berlin Und 8000 Muenchen Working method for a program-controlled data processing system, in particular a data exchange system
DE2733921C3 (en) * 1977-07-27 1981-03-26 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for an indirectly controlled switching system, in particular telephone switching system
DE2826063A1 (en) * 1978-06-14 1979-12-20 Siemens Ag INDIRECTLY CONTROLLED SWITCHING SYSTEM WITH TIME CHANNEL LINKS, IN PARTICULAR TELEPHONE SWITCHING SYSTEM
IT8003502A0 (en) * 1980-09-05 1980-09-05 Sits Soc It Telecom Siemens SURVEILLANCE UNIT OF THE CENTRAL COMMAND OF A PLURALITY OF PERIPHERAL USERS
IT8003501A0 (en) * 1980-09-05 1980-09-05 Sits Soc It Telecom Siemens CENTRAL CONTROL OF A MULTIPLE OF PERIPHERAL USERS
IT1213344B (en) * 1986-09-17 1989-12-20 Honoywell Information Systems FAULT TOLERANCE CALCULATOR ARCHITECTURE.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959836A (en) * 1987-12-09 1990-09-25 Siemens Transmission Systems, Inc. Register robustness improvement circuit and method
US6009935A (en) * 1996-05-15 2000-01-04 Bg Plc Radiators
EP1860558A3 (en) * 2006-05-25 2009-01-21 Honeywell International Inc. Method and apparatus for latent fault memory scrub in memory upon which a computer hardware strongly relies
US7565586B2 (en) 2006-05-25 2009-07-21 Honeywell International Inc. Method and apparatus for latent fault memory scrub in memory intensive computer hardware

Also Published As

Publication number Publication date
NL7018530A (en) 1971-07-01
LU62319A1 (en) 1971-05-18
DE1965314C3 (en) 1974-10-17
BE760976A (en) 1971-06-29
CH521635A (en) 1972-04-15
DE1965314A1 (en) 1971-07-08
DE1965314B2 (en) 1974-03-21
AT304652B (en) 1973-01-25
NL165861C (en) 1981-05-15
FR2074209A5 (en) 1971-10-01

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Legal Events

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