ZA901191B - Method of operating signal techniques of certain multiple accounting systems - Google Patents

Method of operating signal techniques of certain multiple accounting systems

Info

Publication number
ZA901191B
ZA901191B ZA901191A ZA901191A ZA901191B ZA 901191 B ZA901191 B ZA 901191B ZA 901191 A ZA901191 A ZA 901191A ZA 901191 A ZA901191 A ZA 901191A ZA 901191 B ZA901191 B ZA 901191B
Authority
ZA
South Africa
Prior art keywords
computers
detected
channel
computer
data
Prior art date
Application number
ZA901191A
Inventor
Hans-H Schmidt-Kanefendt
Schmidt-Kanefendt Hans-H
Norbert Geduhn
Geduhn Norbert
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 ZA901191B publication Critical patent/ZA901191B/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
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1625—Error detection by comparing the output signals of redundant hardware in communications, e.g. transmission, interfaces
    • 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
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs
    • 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
    • G06F11/0796—Safety measures, i.e. ensuring safe condition in the event of error, e.g. for controlling element
    • 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
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • 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

Abstract

A multicomputer system comprises individual computers (R1 to R3) characterized by reliable signal quality, which communicate through two separate channels. If one channel fails, data transmission continues in single-channel operation through the remaining channel, and errors in the data are detected by higher redundancy. The individual computers (R1, R2) are associated with time monitors (Z1, Z2) which can be adjusted when an error is detected and switch off the individual computers after a maximum permissible time-interval for single channel operation. These time monitors can be reset individually when the associated computer recognizes that it can exchange data with any of the other computers in the multicomputer system through both channels. To this end, it permits the emission of test data (P2.1, P2.2) to the computers of the computer system and evaluates the acknowledgement messages (Q2.1, Q.2.2) from the latter. When its time monitor (z1) is reset, the computer (R1) resumes communication with the other computers, with the exception of the computer (R2) in which the error has been detected, in the two-channel operating mode for data transmission in which errors are not detected with high redundancy.
ZA901191A 1989-02-16 1990-02-16 Method of operating signal techniques of certain multiple accounting systems ZA901191B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3904748 1989-02-16

Publications (1)

Publication Number Publication Date
ZA901191B true ZA901191B (en) 1991-01-30

Family

ID=6374271

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA901191A ZA901191B (en) 1989-02-16 1990-02-16 Method of operating signal techniques of certain multiple accounting systems

Country Status (6)

Country Link
EP (1) EP0458803B1 (en)
AT (1) ATE105954T1 (en)
DE (1) DE59005758D1 (en)
DK (1) DK0458803T3 (en)
WO (1) WO1990009633A1 (en)
ZA (1) ZA901191B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5737515A (en) * 1996-06-27 1998-04-07 Sun Microsystems, Inc. Method and mechanism for guaranteeing timeliness of programs
DE10105707A1 (en) * 2001-02-08 2002-09-05 Siemens Ag Method and device for data transmission
US6898728B2 (en) * 2001-09-25 2005-05-24 Sun Microsystems, Inc. System domain targeted, configurable interconnection
US6871294B2 (en) * 2001-09-25 2005-03-22 Sun Microsystems, Inc. Dynamically reconfigurable interconnection
US9891277B2 (en) 2014-09-30 2018-02-13 Nxp Usa, Inc. Secure low voltage testing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3108871A1 (en) * 1981-03-09 1982-09-16 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR FUNCTIONAL TESTING OF A MULTIPLE COMPUTER SYSTEM
DE3442418A1 (en) * 1984-11-20 1986-05-22 Siemens AG, 1000 Berlin und 8000 München METHOD FOR OPERATING A SIGNAL-SECURE MULTIPLE COMPUTER SYSTEM WITH MULTIPLE SIGNAL-NON-SECURE IN / OUTPUT ASSEMBLIES

Also Published As

Publication number Publication date
EP0458803B1 (en) 1994-05-18
EP0458803A1 (en) 1991-12-04
DE59005758D1 (en) 1994-06-23
ATE105954T1 (en) 1994-06-15
DK0458803T3 (en) 1994-10-10
WO1990009633A1 (en) 1990-08-23

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