ZA838260B - A clock pulse train supply arrangement for a multiple-microcomputer system in railway safety installations - Google Patents

A clock pulse train supply arrangement for a multiple-microcomputer system in railway safety installations

Info

Publication number
ZA838260B
ZA838260B ZA838260A ZA838260A ZA838260B ZA 838260 B ZA838260 B ZA 838260B ZA 838260 A ZA838260 A ZA 838260A ZA 838260 A ZA838260 A ZA 838260A ZA 838260 B ZA838260 B ZA 838260B
Authority
ZA
South Africa
Prior art keywords
clock
clock pulse
pulse train
supply arrangement
microcomputer system
Prior art date
Application number
ZA838260A
Inventor
Michael Gronemeyer
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 ZA838260B publication Critical patent/ZA838260B/en

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
    • G06F11/1675—Temporal synchronisation or re-synchronisation of redundant processing components
    • G06F11/1679—Temporal synchronisation or re-synchronisation of redundant processing components at clock signal level
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Power Sources (AREA)
  • Electric Clocks (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Electronic Switches (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Hardware Redundancy (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

1. Clock current supply for a multimicro computer system in railways safety equipments, in which the micro computers process the same data for safety reasons, a separate clock supply chip with its own time standard being provided for generating a system clock for each micro computer and all clock supply chips being connected to a common crystal clock generator, characterised in that the clock supply chips are constructed as phase controllers (PR1, TP1, O1 and PR2, TP2, O2, respectively), at least a part of the assemblies of each micro computer (MC1, MC2) being included in the associated phase controller (PR1, TP1, O1 and PR2, TP2, O2, respectively), in such a manner that an assembly output (A1 and A2, respectively) of the micro computer (MC1 and MC2, respectively) is connected to the input of a phase detector (PR1 and PR2, respectively) of the phase controller, which is also connected to the crystal clock generator (QR).
ZA838260A 1982-11-08 1983-11-07 A clock pulse train supply arrangement for a multiple-microcomputer system in railway safety installations ZA838260B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823241189 DE3241189A1 (en) 1982-11-08 1982-11-08 CLOCK POWER SUPPLY FOR A MULTIMICROCOMPUTER SYSTEM IN RAILWAY LOCKING SYSTEMS

Publications (1)

Publication Number Publication Date
ZA838260B true ZA838260B (en) 1984-06-27

Family

ID=6177573

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA838260A ZA838260B (en) 1982-11-08 1983-11-07 A clock pulse train supply arrangement for a multiple-microcomputer system in railway safety installations

Country Status (5)

Country Link
EP (1) EP0108284B1 (en)
AT (1) ATE45432T1 (en)
DE (2) DE3241189A1 (en)
DK (1) DK164009C (en)
ZA (1) ZA838260B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5239628A (en) * 1985-11-13 1993-08-24 Sony Corporation System for asynchronously generating data block processing start signal upon the occurrence of processing end signal block start signal
CA1283738C (en) * 1985-11-13 1991-04-30 Atsushi Hasebe Data processor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7707260A (en) * 1977-06-30 1979-01-03 Bell Telephone Mfg MOTHER CLOCK DEVICE.
US4239982A (en) * 1978-06-14 1980-12-16 The Charles Stark Draper Laboratory, Inc. Fault-tolerant clock system
JPS5789170A (en) * 1980-11-25 1982-06-03 Hitachi Ltd Duplex computer controlling system

Also Published As

Publication number Publication date
EP0108284A2 (en) 1984-05-16
DK164009C (en) 1992-09-21
DK509883A (en) 1984-05-09
EP0108284A3 (en) 1987-04-08
ATE45432T1 (en) 1989-08-15
DE3380371D1 (en) 1989-09-14
DK164009B (en) 1992-04-27
DK509883D0 (en) 1983-11-07
EP0108284B1 (en) 1989-08-09
DE3241189A1 (en) 1984-05-10

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