EP0970869B1 - Procédé d'affichage sécurisé de l'état d'une installation de signalisation - Google Patents

Procédé d'affichage sécurisé de l'état d'une installation de signalisation

Info

Publication number
EP0970869B1
EP0970869B1 EP99440192A EP99440192A EP0970869B1 EP 0970869 B1 EP0970869 B1 EP 0970869B1 EP 99440192 A EP99440192 A EP 99440192A EP 99440192 A EP99440192 A EP 99440192A EP 0970869 B1 EP0970869 B1 EP 0970869B1
Authority
EP
European Patent Office
Prior art keywords
picture
symbols
image
display module
status
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 - Lifetime
Application number
EP99440192A
Other languages
German (de)
English (en)
Other versions
EP0970869A3 (fr
EP0970869A2 (fr
Inventor
Andreas Richter
Jaime Monus
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP0970869A2 publication Critical patent/EP0970869A2/fr
Publication of EP0970869A3 publication Critical patent/EP0970869A3/fr
Application granted granted Critical
Publication of EP0970869B1 publication Critical patent/EP0970869B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/06—Indicating or recording the setting of track apparatus, e.g. of points, of signals
    • B61L25/08—Diagrammatic displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/12—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/06—Use of more than one graphics processor to process data before displaying to one or more screens
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory

Definitions

  • the invention relates to a method for the reliable display of the state of a signaling system on a screen and an operator station computer for carrying out the method.
  • Fig. 1 shows the basic structure of an X-Windows system.
  • Essential components are an X server XSERV and one or more client applications CLAPP1 and CLAPP2.
  • the client applications typically rely on an X library of XLIB, which provides the client applications with an agreed set of instructions.
  • REQU calls from the client applications to the X server XSERV are translated by the X library XLIB into the X protocol and transmitted over a network NETW.
  • the X server XSERV creates an image that can be displayed directly on the screen BS.
  • the X server usually has input devices such as keyboard TAS and mouse connected to it.
  • the X server provides u. a. that different windows can be called up via the input devices and changed in size and position. Between the X server and the screen, only a graphics card is switched, the u. a. contains a frame buffer.
  • Signals generated by the input devices are transmitted in the form of special messages EVTS from the X server XSERV to the client applications CLAPP1 and CLAPP2 via the network NETW.
  • REPL messages that the X server uses to acknowledge calls or send error messages to client applications.
  • EP 0 584 895 A2 discloses a method for displaying operating states in which image symbols composed of picture elements are created and provided with color values.
  • the method should provide a high level of security in detecting errors and distortions with the least possible expenditure of hardware and software.
  • two image build-up modules using feed-in state data, independently of one another generate image symbols (SYMB1, SYMB2) composed of pixels.
  • At least one image-building module transmits the created image symbols to a display module.
  • the color values of the pixels for the image symbols are specified explicitly.
  • the display module then assembles the transmitted image symbols to form a state that can be displayed directly on the screen.
  • the image symbols are also generated independently of one another in two different logical channels.
  • the display module which is simply present, receives from the image building modules the complete pixel information (i.e., the color values) for the icons.
  • the functionality of the display module is thus limited to assembling the transmitted icons into a complete picture. Because of this reduced functionality, the likelihood that adulteration errors will go undetected is less likely.
  • each image building module accesses its own protected memory area when creating the image symbols.
  • templates for picture symbols are stored pixel by pixel. It is thus prevented that the image acquisition modules jointly access a defective memory and create parallel falsified image symbols.
  • the image-building modules are X-clients and the display module is an X-server. Since the required security is achieved with only one X server instead of the usual two-channel systems two X servers, you only need an X server license in the implementation.
  • the invention is by no means limited to the use of an X-Windows system.
  • the image build-up modules can be realized as client processes.
  • the display module is then a protected subsystem of the operating system.
  • the transmission of image symbols then takes place via interfaces for local or remote procedure calls.
  • the status data originate, for example, from a signal-technically safe interlocking computer.
  • the status data are identical in content and are only transmitted twice in different formats for security reasons (eg normal and inverted). It is also conceivable, however, that the status data is simply fed to the operator station computer and internally distributed to both input channels.
  • Each input channel communicates with an image building module BAM1 or BAM2.
  • the image enhancement modules BAM1 and BAM2 create image symbols for the parts of the signaling installation that are affected by the status data from the supplied status data i1 and i2. They use project data, which u. a. Specify which image icon to use for which type of track or field element. More complex field elements, eg. B. main signals, if necessary, must be composed of several icons.
  • the rules on which icons to use and how to arrange them are usually set by the plant operator. They are preferably stored independently of one another in both image-building modules BAM1 and BAM2.
  • the image enhancement modules BAM1 and BAM2 receive the message "track section G3 occupied" as the status data from a safe interlocking computer. With this status data, the interlocking computer reports the occupation of the track section G3 by a train.
  • the image building module BAM1 now determines in a step 32 which image symbol is to be used for the representation of a track section. It accesses to project data, which can be seen in this example that the track section in question is represented by a horizontal bar. From a file in which all possible image symbols are stored as templates, the image building module BAM1 retrieves the template for the corresponding image symbol. Subsequently, the image enhancement module BAM1 assigns a foreground and a background color to the original in a step 33. Which colors are to be selected depends on the rules already mentioned above. The assignment of the color values to the individual pixels of the template produces the finished image symbol.
  • the image building module BAM1 transmits the complete image symbol to a display module AZM.
  • the display module receives the image icon and overwrites the displayed image with the image icon.
  • FIG. 4 shows by way of example four track sections G1... G4.
  • the track section G3 is first shown in the displayed on the screen status screen by a picture icon whose color design symbolizes the state "Free".
  • the display module AZM overwrites this icon by the newly transmitted from the image module BAM1 image icon.
  • the new icon in this case has the same geometry but a different color than the original icon. The changed color indicates to the operating personnel the status "busy".
  • the display module only has the task of overwriting the existing state image with an image symbol which has been generated by a image build-up module. If z. B. after a change of the displayed section, a state image is to be completely rebuilt, so it is composed of the display module completely from individual transmitted image symbols.
  • Operator-specific icons are also treated as icons. They are thus also created by the image-building modules in the manner described using templates and transmitted to the display module.
  • the other image building module BAM2 executes the steps just explained for the image building module BAM1 in the same way, but independently. If the image enhancement modules BAM1 and BAM2 function correctly, the independently created image symbols must match pixel by pixel in their color values. To check this, the independently created icons can be compared with each other. In addition, it can be provided that image symbols are read back from the screen and compared with the image symbols created by the image building module BAM2.
  • image symbols are read back from the screen and compared with the image symbols created by the image building module BAM2.
  • Which of the two image enhancement modules BAM1 or BAM2 transmits image symbols to the display module AZM in a concrete individual case is not important here. In FIG. 2, therefore, the connections of the two image build-up modules BAM1 and BAM2 to the display module AZM are shown in the same way.
  • the project data and also the templates for the image symbols are stored in two independent protected memory areas, to which only one of the two image-building modules has access.
  • these storage areas are indicated by reference numerals SPC1 and SPC2.
  • the protected memory areas may, for example, be areas of a main memory which is managed by an operating system which ensures a strict separation of computer resources (eg Windows NT®).
  • the display module AZM be assigned a protected memory area SPAZM.
  • the inventive method has been successfully implemented on an X-Windows system.
  • the image building modules BAM1 and BAM2 are in this case X client applications, while the display module is an X server.
  • the transmission of the image symbols from the image processing modules to the X server is carried out according to the X protocol.
  • the X server has a very limited functionality compared to the otherwise common use. Usually, only the most necessary information for creating graphical representations is transmitted to the X server in order to minimize the data volume in the connecting network. From these data (eg coordinates of a polygon) the X-Server automatically determines the color values of the pixels to be displayed.
  • the X-client applications together with the X server on a computer, so that its powerful internal bus system can be used for the transfer.
  • the X server is connected to one or more graphics cards GK connected to a corresponding number of screens BS.
  • the entire system can thus be built with standard hardware and does not require a particularly developed operating system.
  • the invention is not limited to the use of an X-Windows system. Due to the limited functionality required by the display module, it is also possible to use certain client-server operating systems, such as Windows NT®.
  • the image enhancement modules can then be realized as normal client applications.
  • the role of the display module is assumed protected subsystem of the operating system. The transmission of image symbols in this case takes place via interfaces for local procedure calls. If the image building modules and the display module are spatially distributed over a network, the transmission takes place correspondingly via interfaces for remote procedure calls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Digital Computer Display Output (AREA)
  • Calculators And Similar Devices (AREA)
  • Facsimiles In General (AREA)
  • Computer And Data Communications (AREA)
  • Time-Division Multiplex Systems (AREA)

Claims (7)

  1. Procédé pour l'affichage sécurisé de l'état d'une installation de signalisation sur un écran (BS) à l'aide d'un ordinateur de poste de commande (BPR), comprenant les étapes suivantes :
    a) au moins deux modules de construction d'image (BAM1, BAM2) élaborent avec l'utilisation de données d'état (i1, i2) amenées des pictogrammes assemblés indépendamment les uns des autres à partir de points d'image,
    b) au moins un module de construction d'image transmet les pictogrammes qu'il a élaborés à précisément un module d'affichage (AZM), la valeur chromatique étant indiquée de façon explicite pour chaque point d'image individuel des pictogrammes,
    c) le module d'affichage assemble les pictogrammes transmis pour former une image d'état pouvant être affichée directement à l'écran.
  2. Procédé selon la revendication 1, dans lequel chaque module de construction d'image (BAM1, BAM2) a recours lors de l'élaboration des pictogrammes à une zone de mémoire (SPC1, SPC2) protégée propre, dans laquelle des modèles de pictogrammes sont mémorisés.
  3. Procédé selon l'une quelconque des revendications précédentes, dans lequel les modules de construction d'image sont des applications de client X, le module d'affichage est un serveur X et la transmission de pictogramme s'effectue selon le protocole X.
  4. Procédé selon l'une quelconque des revendications 1 ou 2, dans lequel les modules de construction d'image sont des processus de client protégés d'un signal d'exploitation de serveur client, le module d'affichage est un sous-système protégé du système d'exploitation de serveur client et la transmission de pictogrammes s'effectue soit par une interface de messages pour des appels de procédure locaux ou par une interface de messages pour des appels de procédure éloignés.
  5. Ordinateur de poste de commande (BPR) pour l'affichage sécurisé de l'état d'une installation de signalisation sur un écran (BS) avec :
    a) au moins deux modules de construction d'image (BAM1, BAM2), qui élaborent indépendamment l'un de l'autre des pictogrammes composés à partir de points d'image en utilisant des données d'état amenées (i1, i2) et indiquent alors de façon explicite les valeurs chromatiques des points d'image individuels, et
    b) un module d'affichage qui reçoit des pictogrammes transmis par au moins un module de construction d'image et assemble les pictogrammes transmis pour former une image d'état pouvant être affichée directement à l'écran.
  6. Ordinateur de poste de commande selon la revendication 5, dans lequel les modules de construction d'image sont des applications de client X, le module d'affichage est un serveur X et la transmission de pictogrammes s'effectue selon le protocole X.
  7. Ordinateur de poste de commande selon la revendication 5, dans lequel les modules de construction d'image sont des processus de client protégés d'un système d'exploitation de serveur client, le module d'affichage un sous-système protégé du système d'exploitation de serveur client et la transmission de pictogrammes s'effectue soit par une interface de messages pour des appels de procédure locaux soit par une interface de messages pour des appels de procédure éloignés.
EP99440192A 1998-07-10 1999-07-09 Procédé d'affichage sécurisé de l'état d'une installation de signalisation Expired - Lifetime EP0970869B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19830926A DE19830926A1 (de) 1998-07-10 1998-07-10 Verfahren zur sicheren Anzeige des Zustandes einer signaltechnischen Anlage
DE19830926 1998-07-10

Publications (3)

Publication Number Publication Date
EP0970869A2 EP0970869A2 (fr) 2000-01-12
EP0970869A3 EP0970869A3 (fr) 2002-09-11
EP0970869B1 true EP0970869B1 (fr) 2006-03-22

Family

ID=7873606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99440192A Expired - Lifetime EP0970869B1 (fr) 1998-07-10 1999-07-09 Procédé d'affichage sécurisé de l'état d'une installation de signalisation

Country Status (3)

Country Link
EP (1) EP0970869B1 (fr)
AT (1) ATE320954T1 (fr)
DE (2) DE19830926A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101380961B (zh) * 2008-09-27 2011-10-05 上海宝信软件股份有限公司 厂内铁路图形化调车系统及其方法
IT202200003491A1 (it) * 2022-02-24 2022-05-24 Rete Ferroviaria Italiana S P A Metodo e sistema per generare un’immagine di uscita rappresentativa dello stato di un impianto ferroviario.
IT202200003482A1 (it) * 2022-02-24 2022-05-24 Rete Ferroviaria Italiana S P A Sistema e metodo per la rappresentazione dello stato di un impianto ferroviario in un terminale operatore di tipo commerciale su rete aperta

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10004728C1 (de) * 2000-01-28 2002-06-13 Siemens Ag Verfahren und Einrichtung zum Ansteuern eines Bildschirmgerätes für ein Eisenbahnleitsystem
DE10004743C2 (de) * 2000-01-28 2002-03-28 Siemens Ag Verfahren und Einrichtung zum Ansteuern eines Bildschirmgerätes für ein Eisenbahnleitsystem
US6647315B1 (en) * 2000-09-29 2003-11-11 Fisher-Rosemount Systems, Inc. Use of remote soft phases in a process control system
ITTO20030447A1 (it) * 2003-06-13 2004-12-14 Ansaldo Segnalamento Ferroviario Sp A Metodo di rappresentazione in sicurezza mediante
EP2998187A1 (fr) 2014-09-22 2016-03-23 Thales Deutschland GmbH Procédé pour transférer des informations devant être affichées au niveau d'un terminal d'information
FR3054687B1 (fr) * 2016-07-28 2019-05-17 Airbus (S.A.S.) Dispositif et procede d'affichage d'un document

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Publication number Priority date Publication date Assignee Title
DE3324313A1 (de) * 1983-07-06 1985-01-17 Standard Elektrik Lorenz Ag, 7000 Stuttgart Einrichtung zur signaltechnisch sicheren darstellung von information auf einem datensichtgeraet
GB8328349D0 (en) * 1983-10-24 1983-11-23 London Transport Executive Visual data display system
DE4005393A1 (de) * 1990-02-21 1991-08-22 Standard Elektrik Lorenz Ag Einrichtung zur signaltechnisch sicheren darstellung eines meldebildes
CH683953A5 (de) * 1992-04-30 1994-06-15 Siemens Integra Verkehrstechni Verfahren zur Gewährleistung der signaltechnischen Sicherheit der Benutzeroberfläche einer Datenverarbeitungsanlage.
DE4228917A1 (de) * 1992-08-28 1994-03-03 Siemens Ag Verfahren zum signaltechnisch sicheren Anzeigen verkehrstechnischer Informationen eines Verkehrswegesystems
DE4332143A1 (de) * 1993-09-17 1995-03-23 Siemens Ag Verfahren zum Betrieb eines Datensichtgerätes und Einrichtungen zur Durchführung des Verfahrens
DE19703574A1 (de) * 1997-01-31 1998-08-06 Alsthom Cge Alcatel Verfahren zur sicheren Darstellung eines Bildes auf einem Monitor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101380961B (zh) * 2008-09-27 2011-10-05 上海宝信软件股份有限公司 厂内铁路图形化调车系统及其方法
IT202200003491A1 (it) * 2022-02-24 2022-05-24 Rete Ferroviaria Italiana S P A Metodo e sistema per generare un’immagine di uscita rappresentativa dello stato di un impianto ferroviario.
IT202200003482A1 (it) * 2022-02-24 2022-05-24 Rete Ferroviaria Italiana S P A Sistema e metodo per la rappresentazione dello stato di un impianto ferroviario in un terminale operatore di tipo commerciale su rete aperta
EP4234360A1 (fr) * 2022-02-24 2023-08-30 RFI S.p.A. Méthode et système pour générer une image représentative de l'état d'une installation de transport ferroviaire
EP4234359A1 (fr) 2022-02-24 2023-08-30 RFI S.p.A. Systeme et methode d'affichage de l'etat d'une installation de transport ferroviaire

Also Published As

Publication number Publication date
EP0970869A3 (fr) 2002-09-11
DE59913255D1 (de) 2006-05-11
EP0970869A2 (fr) 2000-01-12
ATE320954T1 (de) 2006-04-15
DE19830926A1 (de) 2000-01-13

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