EP1971977B1 - Anzeige statischer symbole auf einem matrixschirm - Google Patents

Anzeige statischer symbole auf einem matrixschirm Download PDF

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Publication number
EP1971977B1
EP1971977B1 EP07703764A EP07703764A EP1971977B1 EP 1971977 B1 EP1971977 B1 EP 1971977B1 EP 07703764 A EP07703764 A EP 07703764A EP 07703764 A EP07703764 A EP 07703764A EP 1971977 B1 EP1971977 B1 EP 1971977B1
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EP
European Patent Office
Prior art keywords
zone
point
volatile memory
screen
data
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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.)
Active
Application number
EP07703764A
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English (en)
French (fr)
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EP1971977A1 (de
Inventor
Patrice Kersullec
Franck Jeulin
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.)
Thales SA
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Thales SA
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Publication date
Application filed by Thales SA filed Critical Thales SA
Publication of EP1971977A1 publication Critical patent/EP1971977A1/de
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    • 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
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/022—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using memory planes
    • 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
    • G09G5/42—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of patterns using a display memory without fixed position correspondence between the display memory contents and the display position on the screen

Definitions

  • the invention relates to a device and a method for displaying symbols on a matrix screen.
  • Many applications require the display of symbols to inform a user.
  • each zone comprising one or more segments depending on the symbols that it is desired to display in the zone.
  • displays are known in which each zone has 7 segments and makes it possible to display any number in each zone.
  • Dedicated displays lack flexibility in their use. For example, it is not possible to change the size of a zone and the number of segments it contains without developing a new screen. Moreover, nothing can be displayed in the space between the segments.
  • a matrix screen which is not dedicated by design to a type of frozen display.
  • This type of screen is organized in rows and columns. Each intersection of a line and a column forms a display point. This screen has no predetermined zone.
  • a graphical processor-based architecture is used, for example used in technologies developed for micro-computing. This type of architecture is for example described in the document US 4,827,249 . This type of architecture makes it possible to generate moving images and is therefore oversized for displaying symbols.
  • this architecture is much more complex than that used to control a dedicated screen. It is, therefore, much more expensive, its power consumption is higher and its reliability is lower. It is also constrained by the rapid technological evolution of this type of architecture which disrupts the maintenance in long-term operational condition. Indeed, a few years after the development of an architecture, it is often impossible to supply spare parts.
  • the invention aims to overcome the problems mentioned above by proposing the use of a matrix screen, that is to say not dedicated, without using an architecture using graphics processor to display symbols.
  • the subject of the invention is a device for displaying symbols on a matrix screen, according to claim 1.
  • the storage means advantageously comprise a non-volatile memory such as for example a read-only programmable memory well known in the Anglo-Saxon literature under the name of "PROM".
  • a non-volatile memory such as for example a read-only programmable memory well known in the Anglo-Saxon literature under the name of "PROM”.
  • PROM read-only programmable memory
  • Numerous types of read-only memories can be used to implement the invention, such as for example electrically programmable dead-memories, erasable read-only memories by means of ultraviolet radiation, programmable read-only memories quickly well known in the literature.
  • FlashPROM FlashPROM
  • the invention also relates to a symbol display method on a matrix screen, according to claim 4.
  • the figure 1 represents a matrix screen 1 on which two zones 2, 3 and a screen are represented.
  • the contours of zones 2 and 3 are represented in strong lines.
  • a zone according to the invention is a set of points of the matrix in which it is desired to display an image.
  • An area has a fixed location on the screen, hence the static qualifier for the areas defined on the screen.
  • the points of an area may not be contiguous.
  • the different areas can not overlap. In other words, a point on the screen belongs to only one zone.
  • the wallpaper also forms an area that must also be controlled. For example, all the points forming the wallpaper can be turned off.
  • the device represented on the figure 3 comprises the screen 1, a central sequencer 10 for controlling the display on the screen 1, storage means 11 of several areas of the screen and several symbols to be displayed in each zone.
  • These storage means advantageously comprise a non-volatile memory connected to the central sequencer 10.
  • nonvolatile memory is meant a memory that stores the information it contains even in the absence of a power supply. This type of memory is often called a ROM.
  • the central sequencer 10 can be implemented by means of a programmable logic component well known in the English literature under the FPGA name. It is also possible to make this sequencer using discrete components or even by means of a microprocessor.
  • the non-volatile memory is made using a read-only programmable fast memory well known in the English literature under the name FlashPROM.
  • the device further comprises a zone table 12 also connected to the central sequencer 10.
  • the display of each point of the matrix is defined according to the symbol retained in the zone table 12, the membership to a given area, determined by the memory means 11.
  • the membership of a zone is conditioned by the position of the current point in the matrix of the screen.
  • the generation of the display of a point is done using the storage means 11 and the storage of each symbol comprises the state of each point of the zone considered.
  • the state of a point is for example turned on or off in the case of a monochrome screen.
  • the state can also set the color of a point in the case of a color screen.
  • the address is determined in the storage means 11 where the current point status information, for example on or off, is located, depending on the position of the current point on the matrix of the screen 1 and data in the zone table 12.
  • the addressing of the storage means is defined by a counter of the points of the matrix screen 1, for example for the least significant bits of the addressing and by the information elements. contained in each line of the zone table (2, 3), for example for the most significant bits of the addressing.
  • Area table 12 contains the symbol for the area to which the current point belongs. From the symbol read in the zone table 12, the storage means 11 seek the status information of the current point among the possible symbols stored in the storage means 11.
  • the zone table 12 is generated as a function of the image that it is desired to see on the screen 1.
  • the zone table 12 is advantageously stored in a random access memory, for example of well-known random access type.
  • a random access memory for example of well-known random access type. the Anglo-Saxon literature under the name of RAM.
  • a random access memory is used in which a display information is generated and stored for each point of the screen 1.
  • the invention generates and stores in the RAM zone table 12 which includes only global display information per zone. The invention makes it possible to very clearly reduce the size of the random access memory used for the display on the screen 1.
  • the figure 4 to better understand the organization of a zone table 12.
  • the table 12 is organized so as to ensure the definition of a symbol to be displayed in a given area.
  • each zone is identified by a number and the number of the zone to which the current point belongs forms an address 13 of the random access memory and the data 14 of the random access memory associated with the address 13 defines a variation of the symbol of the considered area.
  • the data 14 of the RAM gives an additional address to find the states of the points to be displayed.
  • This complement of address associated with a counter, internal to the central sequencer 10, which points to the position of the current point makes it possible to determine the address in storage means 11 where the state information of the current point is located.
  • zones 2 and 3 are represented in address 13.
  • the data item 14 gives a retained symbol variation for the zone considered. For example, a given 14 5 bits wide, the zone could display Users 2 5 ie 32 different symbols.
  • this data item 14 constitutes a complement of address on the one hand and the memory contains a space on the theoretical 32 for the identification of the area of membership on the other hand, in fact there are 31 symbols different by zone.
  • the data item 14 contains 3 additional bits making it possible to multiply by eight the number of symbols, therefore in all 248 different possible symbols per zone.
  • These 248 symbols are all small fields of pixels that can take any value and constitute alphabetic characters, numbers or pictograms.
  • the zones are independent of each other.
  • the variations of one zone may be different from the variations of another zone.
  • the definition of the symbols is specific to each zone. For example, if the variations of one zone make it possible to display alphabetic characters, another zone can make it possible to display numerical characters or pictograms.
  • a symbol of a zone can only be displayed in this zone except of course to be defined a new time in another zone.
  • the addressing of the first page of the storage means 11 consists, for example, of least significant bits in the addressing of the storage means 11 and the most significant bits of this page are all at a determined value, for example at zero. .
  • the addressing of the storage means 11 with the help of the data extracted from the zone table 12 constitutes the most significant bits in the addressing of the means of storage 11 in addition to the low-order bits previously used.
  • only a first part of the data item 14 extracted from the zone table 12 is sufficient to address the storage means 11 and the data extracted from the zone table 12 is demultiplexed by means of a second part of the data item 14 extracted from the zone table 12.
  • storage means 11 at the address obtained by the data 14 extracted from the zone table 12. It is thus possible to store several symbol variations in the same data storage means 11.
  • the data of the zone table has for example a eight-bit width.
  • the first of the data 14 of the zone table 12 uses five bits. There remains three bits of the data 14 to demultiplex the data extracted from the storage means 11.
  • the implementation of the invention makes it possible to use only a RAM of very small capacity, the shape of the zones and symbols being stored in a non-volatile memory. Nevertheless, it is easy to modify the zones and the symbols by reprogramming the non-volatile memory without changing the electronic components used to implement the device. This finds, for example, a particular utility when one wants to provide a display device in different countries using different languages.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Controls And Circuits For Display Device (AREA)

Claims (6)

  1. Vorrichtung zum Anzeigen von Symbolen auf einem Matrixbildschirm (1), die Folgendes umfasst:
    einen nichtflüchtigen Speicher (11), der mehrere statische Zonen (2, 3) des Bildschirms (1) definiert und für jede Zone (2, 3) den Status jedes Punktes der relevanten Zone für mehrere Symbole (4, 5) speichert, die dort angezeigt werden können, wobei die gespeicherten Symbole (4, 5) für jede Zone (2, 3) spezifisch sind,
    einen Arbeitsspeicher, der eine Zonentabelle (12) enthält, die für jede Zone (2, 3) Daten definiert, die das darauf anzuzeigende Symbol (4, 5) anzeigen, und
    Mittel (10) zum Steuern der Anzeige jedes Punktes der Matrix in Abhängigkeit von der Assoziation des Punktes mit einer in dem nichtflüchtigen Speicher (11) bestimmten Zone (2, 3) und den Daten, die das Symbol (4, 5) anzeigen, das für die gegebene Zone (2, 3) in der Zonentabelle (12) gespeichert ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Adressierung des nichtflüchtigen Speichers (11) durch einen Zähler der Punkte des Matrixbildschirms (1) und durch die in jeder Zeile der Zonentabelle (2, 3) enthaltenen Informationen definiert wird.
  3. Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass jede Zone (2, 3) durch eine Nummer gekennzeichnet ist und die Nummer der Zone, die mit dem aktuellen Punkt assoziiert ist, eine Adresse (13) in dem Arbeitsspeicher bildet und Daten (14) in dem mit der Adresse (13) verknüpften Arbeitsspeicher eine Variation des Symbols der relevanten Zone (2, 3) bildet.
  4. Verfahren zum Anzeigen von Symbolen auf einem Matrixbildschirm, wobei das Verfahren eine Vorrichtung nach einem der vorherigen Ansprüche verwendet und für jeden Punkt auf dem Bildschirm die folgenden Schritte beinhaltet:
    - Bestimmen der Zone (2, 3), mit der der Punkt assoziiert ist, mit Hilfe des nichtflüchtigen Speichers (11);
    - Bestimmen einer Anzeige des anzuzeigenden Symbols (4, 5) mit Hilfe der Zonentabelle (12);
    - Erzeugen einer Anzeige des Punktes durch Suchen, auf der Basis dieser Anzeige des Symbols, in dem nichtflüchtigen Speicher (11) nach den Statusinformationen des Punktes unter den im nichtflüchtigen Speicher (11) gespeicherten Symbolen.
  5. Verfahren zum Anzeigen nach Anspruch 4, gekennzeichnet durch:
    - Adressieren einer ersten Seite des nichtflüchtigen Speichers (11) mit Hilfe eines Punktpositionszählers des Bildschirms (1);
    - Adressieren der Zonentabelle (12) mittels mit einem Punktpositionszähler des Bildschirms (1) aus dem nichtflüchtigen Speicher (11) extrahierter Daten;
    - Adressieren des nichtflüchtigen Speichers (11) mit Hilfe der aus der Zonentabelle (12) extrahierten Daten;
    - Definieren eines Anzeigestatus des Punktes anhand der Daten, die aus dem nichtflüchtigen Speicher (11) zu der durch die Daten in der Zonentabelle (12) erhaltenen Adresse extrahiert werden.
  6. Verfahren zum Anzeigen nach Anspruch 5, dadurch gekennzeichnet, dass nur ein erster Teil der aus der Zonentabelle (12) extrahierten Daten (14) zum Adressieren des nichtflüchtigen Speichers (11) ausreicht, und dadurch, dass mehrere in der relevanten Zone anzuzeigende Daten zu der für den nichtflüchtigen Speicher (11) gespeicherten Adresse multiplexiert werden, und dadurch, dass das zur Anzeige in der relevanten Zone gespeicherte Symbol mittels eines zweiten Teils der aus der Zonentabelle (12) extrahierten Daten (14) demultiplexiert wird, die aus dem nichtflüchtigen Speicher (11) zu der Adresse, erhalten durch die aus der Zonentabelle (12) extrahierten Daten.
EP07703764A 2006-01-10 2007-01-10 Anzeige statischer symbole auf einem matrixschirm Active EP1971977B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0600203A FR2896075B1 (fr) 2006-01-10 2006-01-10 Dispositif et procede d'affichage de symboles statiques sur un ecran matriciel
PCT/EP2007/050217 WO2007080173A1 (fr) 2006-01-10 2007-01-10 Affichage de symboles statiques sur un ecran matriciel

Publications (2)

Publication Number Publication Date
EP1971977A1 EP1971977A1 (de) 2008-09-24
EP1971977B1 true EP1971977B1 (de) 2010-08-11

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ID=36928356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07703764A Active EP1971977B1 (de) 2006-01-10 2007-01-10 Anzeige statischer symbole auf einem matrixschirm

Country Status (5)

Country Link
US (1) US20100321392A1 (de)
EP (1) EP1971977B1 (de)
DE (1) DE602007008356D1 (de)
FR (1) FR2896075B1 (de)
WO (1) WO2007080173A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007327A (en) * 1975-07-30 1977-02-08 Compagnie Industrielle Des Telecommunications Cit-Alcatel Apparatus for selectively altering image data for CRT display in order to facilitate image analysis
US4189728A (en) * 1977-12-20 1980-02-19 Atari, Inc. Apparatus for generating a plurality of moving objects on a video display screen utilizing associative memory
US4163229A (en) * 1978-01-18 1979-07-31 Burroughs Corporation Composite symbol display apparatus
FR2496368B1 (fr) * 1980-12-12 1985-11-29 Texas Instruments France Procede et dispositif pour la visualisation de messages transmis par un signal du type television, sur un dispositif d'affichage a trame balayee tel qu'ecran d'un tube a rayons cathodiques, ledit message comportant des elements repetitifs.
FR2566949B1 (fr) * 1984-06-29 1986-12-26 Texas Instruments France Systeme d'affichage d'images video sur un ecran a balayage ligne par ligne et point par point
GB8908322D0 (en) * 1989-04-13 1989-06-01 Stellar Communicat Ltd Display
US5761340A (en) * 1993-04-28 1998-06-02 Casio Computer Co., Ltd. Data editing method and system for a pen type input device
US6995779B1 (en) * 1998-01-29 2006-02-07 Rohm Co., Ltd. Driving device for a display
US20080246643A1 (en) * 2004-03-15 2008-10-09 Mark Francis Rumreich Technique For Efficient Video Re-Sampling

Also Published As

Publication number Publication date
EP1971977A1 (de) 2008-09-24
FR2896075B1 (fr) 2008-05-16
FR2896075A1 (fr) 2007-07-13
DE602007008356D1 (de) 2010-09-23
US20100321392A1 (en) 2010-12-23
WO2007080173A1 (fr) 2007-07-19

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