GB2371390A - Synchronizer circuit - Google Patents

Synchronizer circuit Download PDF

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Publication number
GB2371390A
GB2371390A GB0208703A GB0208703A GB2371390A GB 2371390 A GB2371390 A GB 2371390A GB 0208703 A GB0208703 A GB 0208703A GB 0208703 A GB0208703 A GB 0208703A GB 2371390 A GB2371390 A GB 2371390A
Authority
GB
United Kingdom
Prior art keywords
microprocessors
allows
boards
address
synchronised
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.)
Granted
Application number
GB0208703A
Other versions
GB2371390B (en
GB0208703D0 (en
Inventor
Omer Aydin
Atilla Tanyeli
Ozgur Kayalar
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.)
NETAS NORTHERN ELECTRIC TEELEC
Original Assignee
NETAS NORTHERN ELECTRIC TEELEC
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 NETAS NORTHERN ELECTRIC TEELEC filed Critical NETAS NORTHERN ELECTRIC TEELEC
Publication of GB0208703D0 publication Critical patent/GB0208703D0/en
Publication of GB2371390A publication Critical patent/GB2371390A/en
Application granted granted Critical
Publication of GB2371390B publication Critical patent/GB2371390B/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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1658—Data re-synchronization of a redundant component, or initial sync of replacement, additional or spare unit
    • 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
    • G06F11/1683—Temporal synchronisation or re-synchronisation of redundant processing components at instruction level

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Debugging And Monitoring (AREA)
  • Bus Control (AREA)

Abstract

This invention is related to an integrated circuit for the synchronous operation of two identical digital boards comprising microprocessors, wherein it allows each board to access to each other's memories (5), produces the necessary signals to start the synchronised operation of boards, allows the microprocessors (1) on both boards to have a synchronised operation on a command interpretation basis to provide synchronised operation, determines the probable incompatibilities by comparing the address and data buses (7, 8) of both microprocessors (1) during the synchronised operation, reports the incompatibility to both microprocessors (1) by a break signal, and allows the microprocessors (1) to read the address and data bus (7, 8) values of an incompatibility by writing the said values on an internal log.

Description

.,UK Patent Application,g,GB ',2371 390 HA {43} Date of Printing by UK
Omce 24.07.2002 (21) Application No 0208703.g (51) INTCL7 G06F 11/16
(22) Date of Filing 18.092000 (52) UK CL (Edition T) (30) Priority Data G4A AEC A12N A12T (31) 9902280 (32) 17.09.1999 (33) TR
(56) Documents Cited by ISA (86) International Application Data EP 0315303 A W086/02475 A PCT/TR00/00050 En 18.092000 FR 002561410 A US 5862502 A US 3864670 A
(87) International Publication Data WO01/20465 En 22.032001 (58) Field of Search by ISA
INTCL7 G06F
Online: EPO4ntarnal, PAJ, WPI Data (71) Applicant(s) Netas Northern Eloetrie Tealeeommunieation A S. Ilncorporated in Turkey) (74) Agent and/or Address for Service Netas, Alemdao Cad., Umranlye 81244. h tanbul. Lloyd Wise, Tregoar & Co Turkey Commonwealth House, 1-19 New Oxford Street, LONDON, WC1A lLW, United Kingdom (72) Inventor(s) Omer Aydin Atilla Tanyeli Ozgur Kayalar (54) Abstract rtle Synehronizer eireuit (57) This invention is related to an integrated circuit for the synchronous operation of two identical digital boards comprising microprocessors, wherein it allows each board to access to each other's memories (5), produces the necessary signals to start the synchronised operation of boards, allows the microprocessors ( 1} on both boards to have a synchronised operation on a command interpretation basis to provide synchronised operation, determines the probable incompatibilities by comparing the address and data buses (7, 8) of both microprocessors (1) during the synchronised operation, reports the incompatibility to both microprocessors (1) by a break signal, and allows the microprocessors (1) to read the address and data bus (7, 8) values of an incompatibility by writing the said values on an internal log.
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GB0208703A 1999-09-17 2000-09-18 Synchroniser circuit Expired - Fee Related GB2371390B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR1999/02280A TR199902280A2 (en) 1999-09-17 1999-09-17 Es timing circuit.
PCT/TR2000/000050 WO2001020465A2 (en) 1999-09-17 2000-09-18 Synchronizer circuit

Publications (3)

Publication Number Publication Date
GB0208703D0 GB0208703D0 (en) 2002-05-29
GB2371390A true GB2371390A (en) 2002-07-24
GB2371390B GB2371390B (en) 2004-07-14

Family

ID=21622162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0208703A Expired - Fee Related GB2371390B (en) 1999-09-17 2000-09-18 Synchroniser circuit

Country Status (4)

Country Link
AU (1) AU7698900A (en)
GB (1) GB2371390B (en)
TR (1) TR199902280A2 (en)
WO (1) WO2001020465A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122693B4 (en) * 2001-05-10 2004-05-06 Siemens Ag Method for operating a redundant processor unit for a highly available computing system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864670A (en) * 1970-09-30 1975-02-04 Yokogawa Electric Works Ltd Dual computer system with signal exchange system
FR2561410A1 (en) * 1984-03-13 1985-09-20 Merlin Gerin Control for a process associated with two redundant programmable automatic controllers
WO1986002475A1 (en) * 1984-10-17 1986-04-24 American Telephone & Telegraph Company Method of and arrangement for ordering of multiprocessor operations in a multiprocessor system
EP0315303A2 (en) * 1987-09-04 1989-05-10 Digital Equipment Corporation Duplicated fault-tolerant computer system with error checking
US5862502A (en) * 1993-12-02 1999-01-19 Itt Automotive Europe Gmbh Circuit arrangement for safety-critical control systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864670A (en) * 1970-09-30 1975-02-04 Yokogawa Electric Works Ltd Dual computer system with signal exchange system
FR2561410A1 (en) * 1984-03-13 1985-09-20 Merlin Gerin Control for a process associated with two redundant programmable automatic controllers
WO1986002475A1 (en) * 1984-10-17 1986-04-24 American Telephone & Telegraph Company Method of and arrangement for ordering of multiprocessor operations in a multiprocessor system
EP0315303A2 (en) * 1987-09-04 1989-05-10 Digital Equipment Corporation Duplicated fault-tolerant computer system with error checking
US5862502A (en) * 1993-12-02 1999-01-19 Itt Automotive Europe Gmbh Circuit arrangement for safety-critical control systems

Also Published As

Publication number Publication date
WO2001020465A2 (en) 2001-03-22
WO2001020465A3 (en) 2001-12-27
AU7698900A (en) 2001-04-17
GB2371390B (en) 2004-07-14
GB0208703D0 (en) 2002-05-29
TR199902280A2 (en) 2001-02-21

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Legal Events

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

Effective date: 20060918