FI874817A - A method and apparatus for inputting data into signal-technically secure calculators - Google Patents

A method and apparatus for inputting data into signal-technically secure calculators Download PDF

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Publication number
FI874817A
FI874817A FI874817A FI874817A FI874817A FI 874817 A FI874817 A FI 874817A FI 874817 A FI874817 A FI 874817A FI 874817 A FI874817 A FI 874817A FI 874817 A FI874817 A FI 874817A
Authority
FI
Finland
Prior art keywords
secure signalling
secure
signalling
input
security
Prior art date
Application number
FI874817A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI91335C (en
FI91335B (en
FI874817A0 (en
Inventor
Reinhard Liepelt
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of FI874817A0 publication Critical patent/FI874817A0/en
Publication of FI874817A publication Critical patent/FI874817A/en
Application granted granted Critical
Publication of FI91335B publication Critical patent/FI91335B/en
Publication of FI91335C publication Critical patent/FI91335C/en

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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
    • G06F11/0796—Safety measures, i.e. ensuring safe condition in the event of error, e.g. for controlling element

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)
  • Safety Devices In Control Systems (AREA)
  • Test And Diagnosis Of Digital Computers (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

For simpler and more flexible input of information into computer systems with secure signalling via input devices with secure signalling, in which, for verification, displays with secure signalling and command-enabling keys with secure signalling are operated, according to the invention it is proposed that the input device is divided into a part with secure signalling and a part without secure signalling which is connected in series before it, that all information passes through the insecure part, whether input via it or processed into commands, and that all information and commands are automatically tested in the part with secure signalling for secure signalling relevance. If they are not relevant to security, they are passed directly to a control logic unit of the system, and the additional command security procedure is only required if they are relevant to security. A particular advantage is that modifications of the input and output processes can be implemented while minimising the part with secure signalling, using modifiable devices with insecure structure, without requiring additional testing. <IMAGE>
FI874817A 1986-11-21 1987-11-02 Method and apparatus for input of information into signal-technically safe counter devices FI91335C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3639788 1986-11-21
DE3639788A DE3639788C1 (en) 1986-11-21 1986-11-21 Method and arrangement for input of information into computer systems with secure signalling

Publications (4)

Publication Number Publication Date
FI874817A0 FI874817A0 (en) 1987-11-02
FI874817A true FI874817A (en) 1988-05-22
FI91335B FI91335B (en) 1994-02-28
FI91335C FI91335C (en) 1994-06-10

Family

ID=6314448

Family Applications (1)

Application Number Title Priority Date Filing Date
FI874817A FI91335C (en) 1986-11-21 1987-11-02 Method and apparatus for input of information into signal-technically safe counter devices

Country Status (5)

Country Link
AT (1) AT398952B (en)
DD (1) DD262930A5 (en)
DE (1) DE3639788C1 (en)
FI (1) FI91335C (en)
NL (1) NL8702610A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938501A1 (en) * 1989-11-20 1991-05-23 Siemens Ag METHOD FOR OPERATING A MULTI-CHANNEL FAILSAFE COMPUTER SYSTEM AND DEVICE FOR IMPLEMENTING THE METHOD
GB2267984A (en) * 1992-06-16 1993-12-22 Thorn Emi Electronics Ltd Multiplexing bus interface.
DE102006037153A1 (en) * 2006-08-02 2008-02-07 Siemens Ag Method for controlling and monitoring a moving vehicle along a route, in particular for signal-safe train control
DE102012211273A1 (en) * 2012-06-29 2014-01-02 Siemens Aktiengesellschaft Method and arrangement for controlling a technical installation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3238843C2 (en) * 1982-10-20 1985-12-19 Siemens AG, 1000 Berlin und 8000 München Device for controlling a signal box

Also Published As

Publication number Publication date
FI91335C (en) 1994-06-10
FI91335B (en) 1994-02-28
AT398952B (en) 1995-02-27
ATA306887A (en) 1994-07-15
DD262930A5 (en) 1988-12-14
NL8702610A (en) 1988-06-16
DE3639788C1 (en) 1988-03-03
FI874817A0 (en) 1987-11-02

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Owner name: LICENTIA PATENT-VERWALTUNGS-GMBH