EP1889251A1 - Connection to displays of different types - Google Patents

Connection to displays of different types

Info

Publication number
EP1889251A1
EP1889251A1 EP06755538A EP06755538A EP1889251A1 EP 1889251 A1 EP1889251 A1 EP 1889251A1 EP 06755538 A EP06755538 A EP 06755538A EP 06755538 A EP06755538 A EP 06755538A EP 1889251 A1 EP1889251 A1 EP 1889251A1
Authority
EP
European Patent Office
Prior art keywords
screen
connection
type
display
series
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.)
Granted
Application number
EP06755538A
Other languages
German (de)
French (fr)
Other versions
EP1889251B1 (en
Inventor
Benjamin Thomas
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.)
Idemia Identity and Security France SAS
Original Assignee
Sagem Securite 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 Sagem Securite SA filed Critical Sagem Securite SA
Publication of EP1889251A1 publication Critical patent/EP1889251A1/en
Application granted granted Critical
Publication of EP1889251B1 publication Critical patent/EP1889251B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto

Definitions

  • the present invention relates to a device for connecting an electronic unit indifferently to a screen of a first type or to a screen of a second type.
  • the electronic unit is for example an information terminal or any other electronic device that requires the addition of a screen.
  • Such an electronic unit generally comprises a display line and a sound line intended to be connected respectively to an external screen and to external loudspeakers.
  • connection connectors include connection elements, such as pins or plugs, arranged according to the DVI standard (for "Digital Visual Interface” or Digital Visual Interface). This standard, currently very common and specific to the display, allows the connection of the display line to different display devices.
  • the connection elements are thus distributed in a first series intended to connect the display line of the electronic unit to the display member of the screen regardless of the size thereof and a second series intended to connect only the display line to the display member of the display when the display member is 53.34 cm (21 inches) in size or greater. Screens with a display size of less than 53.34 cm are, however, the most common.
  • the sound line is connected to the loudspeakers by one or more dedicated connectors generally of "jack" type.
  • the risk of an error or a forgotten connection being all the more important as the number of connections is high, the presence of several connectors is troublesome when the installation of the electronic unit and the components that it are connected must be performed in a short time. This risk is further increased when the installation is carried out by people with little training.
  • connection verification time increases the duration of the intervention.
  • the switching member when a screen of the first type is connected to the connecting device, the switching member connects the sound line to the loudspeaker. In this way, unused connection elements are used by the display member of the screen of the first type to pass an electrical signal to the loudspeaker.
  • the switching device disconnects the sound line of the second set of connection elements so that the sound line is not connected. to the screen display member of the second type. There is therefore no risk of deterioration of the screen display member of the second type due to the delivery of electrical signals of a level incompatible with its operation.
  • the switching member in its state of disconnection of the sound line connects the display line to the second series of connection elements of the external connection connector.
  • the switching member will connect the display line to the display member of the screen via the second series of connection elements so that that it can work normally.
  • the detection element comprises a measuring element of an electrical characteristic between the connection elements to which it is connected or the detection element is associated with a recovery member of an identification device. 'screen to connect.
  • the invention also relates to a screen comprising a display member, at least one loudspeaker and an external connection connector.
  • the display member is connected to a first series of connection elements of the external connection connector and the speaker is connected to a second series of connection elements of the external connection connector.
  • Such a screen can be connected to the connection device presented above by providing a sound system.
  • This screen also has a simple structure and the speaker can directly receive analog signals.
  • FIG. 1 is a general schematic view of an electronic unit and two screens of first and second different types connectable to this electronic unit,
  • FIG. 2 is a partial schematic view of an electronic unit connected to a screen of the first type by a connection device according to a first embodiment of the invention
  • FIG. 3 is a view similar to Figure 1, an electronic unit connected to a screen of the first type by a connecting device according to a second embodiment of the invention.
  • DETAILED DESCRIPTION OF THE INVENTION With reference to FIG. 1, the present invention relates to an electronic unit generally designated in 1 intended to be connected indifferently to a screen of a first type, generally designated 2, and to a screen of one second type generally designated in 3.
  • the electronic unit 1 is here a computer terminal comprising in particular a known way in itself a motherboard equipped with a processor and a random access memory, a hard disk, an access member to the Internet ...: these components not directly related to the invention have not been shown.
  • the electronic unit 1 further comprises a graphics card 4 and an audio card 5 connected to an external connection connector 6 by a display line, generally designated 7, and a sound line, generally designated 8, of a connection device 9 of the electronic unit 1 to the screens 2, 3.
  • the external connection connector 6 known in itself, is arranged to meet the DVI standard (for "Digital Visual Interface") and comprises twenty-four connection elements referenced 10.1 to 10.24 for the purposes of the description.
  • the display line 7 comprises eighteen conductors connected to a first series of connection elements referenced 10.1 to 10.18.
  • the sound line 8 comprises two pairs of conductors corresponding to a left audio channel and a right audio channel and is arranged to transmit audio electrical signals, analog and pre-amplified.
  • One conductor of each pair is connected directly to a connecting member 10.21, 10.22 and the other conductor of each pair is each connected to an input of a lead member.
  • switching 11 comprising for each conductor an output connected to the connection elements 10.19 and 10.20.
  • the switching element here is a normally closed electromechanical relay.
  • a detection member 12 of the connected screen type is connected to the connection elements 10.23 and 10.24 and to the switching member 11 to control the latter between a connection state of the conductors of the sound line 6 to the connection elements 10.19 at 10.22 and a state of disconnection of the conductors of the sound line 6 and the connection elements 10.19 to 10.22.
  • the detection element 12 comprises a comparator 13 having an input connected by a conductor 14 to the connection element 10.23 and an output connected to the switching element 11.
  • the conductor 14 is connected to the ground by a resistor 16.
  • Resistor 16 has a value less than one k ⁇ .
  • the connection element 10.24 is connected to a voltage source 15.
  • connection elements 10.19 to 10.24 form a second series of connection elements.
  • the screen 2 comprises a display member 17, two speakers 18 left and right, and an external connection connector 19 to the DVI standard having connection elements 20.1 to 20.24 for cooperating with the connection elements 10.1 to 10.24 of the external connection connector 6.
  • the display member 17 has a size less than 21 inches and is connected by conductors to the connection members 20.1 to 20.18 of the external connection connector 19.
  • One of the speakers 18 is connected to the connection members 20.19 and 20.21 and the other speaker 18 is connected to the connection elements 20.20 and 20.22.
  • a resistor 24 of 1 k ⁇ is connected between the connection elements 20.23 and 20.24.
  • the screen 3 comprises a display member 21 and an external connection connector 22 to the DVI standard.
  • the display member 21 has a size larger than 21 inches and is connected by conductors to all the connection elements 23 of the external connection connector 22.
  • the resistive value between the terminals 23.23 and 23.24 is of the order of several M ⁇ if the screen 3 operates at a resolution greater than or equal to 2048 ⁇ 1536 (QXGA for "Quantum Extended Graphics Array").
  • Line 'display 7 is connected to the display member 17 or 21 by the connecting elements 10.1 to 10.18 and 20.1 to 20.18 regardless of the type of screen, 2 or 3, connected.
  • the connecting elements 10.23 and 10.24 are connected to the connecting elements 20.23 and 20.24 which are connected to them with a resistance of less than 1 k ⁇ .
  • This infinite resistance is detected by the comparator 13 which leaves the switching member 11 in its connection state (the switching member 11 is normally closed).
  • the sound line 8 is thus connected to the speakers 18 by the connection elements 10.19 to 10.22 and 20.19 to 20.22.
  • Analog signals thus pass through these connection elements to directly supply the loudspeakers 18.
  • the audio signal sent to the loudspeakers 18 is a preamplified analog audio signal.
  • connection elements 10.23 and 10.24 are connected to the display member if the resolution of the screen 3 is greater than the QXGA resolution. Resistance to born of these elements is of the order of a few M ⁇ .
  • the comparator 13 detects such a resistance, it controls the switching element 11 in its disconnected state. Only the display line 7 is then connected to the display member 21.
  • the switching member 11 is normally closed because the computer unit 1 and the screen 2 are intended to be sold together, a screen 3 being likely to be connected only in troubleshooting and temporarily.
  • Pre-amplified audio electrical signals can have a maximum voltage of 12 volts. In the absence of the switching member 11 and the detection member 12, such a voltage could destroy the display member 21 of the screen 3 if the sound line 8 was connected to said body display 21.
  • connection elements 10.23 and 10.24 are not connected so that the resistance between these bounds is infinite.
  • the comparator detects such a resistance, it controls the switching element 11 in its disconnected state. Only the display line 7 is then connected to the display member of the screen.
  • the sound line 8 is connected to the input of an amplifying member 31 having an output connected to the connection elements 10.19 to 10.22.
  • the detection member 9 is identical to that of the first embodiment, the output of the comparator 13 being connected to the invalidation input of the amplification member 31. It is understood that when the comparator 13 detects a higher resistance - greater than a few k ⁇ , it transmits a signal to the disable input to cut the link between the PA line 8 and the connection elements 10.19 to 10.22.
  • the circuit of the connection device may have a structure different from that described.
  • the switching member may for example be a static relay.
  • the switching element 11 When the electronic unit 1 is to be sold alone, the switching element 11 may be normally open. When connected to a screen 2, the power consumption is higher than if the switching element was normally closed.
  • the invention is not limited to the DVI standard but also applies to similar standards.
  • the switching member 11 in its state of disconnection from the sound line 8 may be arranged to connect the display line 7 to the second series of connection elements 10.19 to 10.24 of the external connection connector 6
  • the detection element 12 may be associated with a device for recovering an identification of the screen to be connected.
  • This identification may for example be contained in a memory of the screen and be repatriated to the display card from the first series of connection elements 10.1 to 10.18 using for example a serial communication link type "DDC" (for "Digital Display
  • the memory may be that of an identification module of the screen 2 connected to the connection elements 20.23 and 20.24 to allow repatriation of the identification. to the sensing element from the connection elements 10.23 and 10.24.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Filters And Equalizers (AREA)
  • Calculators And Similar Devices (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

The invention relates to a device for connecting an electronic unit (1) to different types of screen, the device comprising an external connection connector (6) possessing connector elements (10) distributed in a first series for connection to the display members (17, 21) of screens, and a second series for connection to a loudspeaker (18) of a screen of a first type (2) or to the display member (21) of a screen of a second type (3), the device comprising a display line (7) connected to the connector elements of the first series, a sound line (8) connected to a switch member (11) connected to the connector elements of the second series, and a detector element (12) connected to the connector elements of the connector and to the switch member to cause the switch member to take up a connection state when the connected screen is of the first type and a disconnection state when the connected screen is of the second type. The invention also relates to a screen for connection to the device.

Description

RACCORDEMENT À DES ÉCRANS DE TYPES DIFFÉRENTS CONNECTING TO SCREENS OF DIFFERENT TYPES
La présente invention concerne un dispositif de raccordement d'une unité électronique indifféremment à un écran d'un premier type ou à un écran d'un deuxième type. L'unité électronique est par exemple un terminal informât!- que ou tout autre dispositif électronique qui nécessite l'adjonction d'un écran.The present invention relates to a device for connecting an electronic unit indifferently to a screen of a first type or to a screen of a second type. The electronic unit is for example an information terminal or any other electronic device that requires the addition of a screen.
ARRIERE PLAN DE L' INVENTIONBACKGROUND OF THE INVENTION
Une telle unité électronique comprend généralement une ligne d'affichage et une ligne de sonorisation desti- nées à être reliées respectivement à un écran externe et à des haut-parleurs externes.Such an electronic unit generally comprises a display line and a sound line intended to be connected respectively to an external screen and to external loudspeakers.
La ligne d'affichage est reliée à un dispositif de raccordement comportant un connecteur de raccordement externe destiné à coopérer avec un connecteur de raccordement externe de l'écran. Les connecteurs de raccordement comportent des éléments de connexion, tels que des broches ou des fiches, agencés selon le standard DVI (pour "Digital Visual Interface" ou Interface Visuelle Numérique) . Ce standard, actuellement très répandu et spécifique à l'affichage, per- met le raccordement de la ligne d'affichage à des organes d'affichage de tailles différentes. Les éléments de connexion sont ainsi répartis en une première série destinée à relier la ligne d'affichage de l'unité électronique à l'organe d'affichage de l'écran quelle que soit la taille de celui-ci et une deuxième série destinée à relier uniquement la ligne d'affichage à l'organe d'affichage de l'écran lorsque l'organe d'affichage est de taille égale ou supérieure à 53,34 cm (21 pouces) . Les écrans dont l'organe d'affichage est de taille inférieure à 53,34 cm sont toute- fois les plus répandus.The display line is connected to a connection device comprising an external connection connector intended to cooperate with an external connection connector of the screen. The connection connectors include connection elements, such as pins or plugs, arranged according to the DVI standard (for "Digital Visual Interface" or Digital Visual Interface). This standard, currently very common and specific to the display, allows the connection of the display line to different display devices. The connection elements are thus distributed in a first series intended to connect the display line of the electronic unit to the display member of the screen regardless of the size thereof and a second series intended to connect only the display line to the display member of the display when the display member is 53.34 cm (21 inches) in size or greater. Screens with a display size of less than 53.34 cm are, however, the most common.
La ligne de sonorisation est reliée aux haut- parleurs par un ou plusieurs connecteurs dédiés généralement de type "jack". Le risque d'une erreur ou d'un oubli de connexion étant d'autant plus important que le nombre de connexions est élevé, la présence de plusieurs connecteurs est gênante lorsque l'installation de l'unité électronique et des com- posants qui lui sont raccordés doit être réalisée dans un temps court. Ce risque est encore augmenté lorsque l'installation est réalisée par des personnes peu formées.The sound line is connected to the loudspeakers by one or more dedicated connectors generally of "jack" type. The risk of an error or a forgotten connection being all the more important as the number of connections is high, the presence of several connectors is troublesome when the installation of the electronic unit and the components that it are connected must be performed in a short time. This risk is further increased when the installation is carried out by people with little training.
En outre, lors d'une intervention de maintenance, le temps de vérification des connexions augmente la durée de l'intervention.In addition, during a maintenance intervention, the connection verification time increases the duration of the intervention.
OBJET DE L'INVENTIONOBJECT OF THE INVENTION
II serait donc intéressant de disposer d'un moyen permettant de simplifier les opérations de connexion d'une unité électronique à des composants audio-vidéo externes. BREVE DESCRIPTION DE L'INVENTIONIt would therefore be advantageous to have a means for simplifying the connection operations of an electronic unit to external audio-video components. BRIEF DESCRIPTION OF THE INVENTION
A cet effet, on prévoit, selon l'invention, un dispositif de raccordement d'une unité électronique indifféremment à un écran d'un premier type ou à un écran d'un deuxième type possédant tous deux un organe d'affichage, l'écran du premier type étant en outre équipé d'au moins un haut-parleur, le dispositif de raccordement comprenant une ligne d'affichage, une ligne de sonorisation, et un connecteur de raccordement externe possédant des éléments de connexion répartis en une première série destinée à être rac- cordée à l'organe d'affichage des écrans et une deuxième série destinée à être raccordée au haut-parleur de l'écran du premier type ou à l'organe d'affichage de l'écran du deuxième type, la ligne d'affichage étant reliée aux éléments de connexion de la première série, la ligne de sono- risation étant reliée à une entrée d'un organe de commutation qui a une sortie reliée aux éléments de connexion de la deuxième série et qui est commandé par un élément de détection du type d'écran raccordé, l'élément de détection étant relié à des éléments de connexion du connecteur et à l'organe de commutation pour commander ce dernier dans un état de connexion de la ligne de sonorisation avec le connecteur lorsque l'écran raccordé est du premier type, et un état de déconnexion de la ligne de sonorisation du connec- teur lorsque 1 ' écran raccordé est du deuxième type .For this purpose, according to the invention, provision is made for a device for connecting an electronic unit to either a screen of a first type or to a screen of a second type both having a display member, the a screen of the first type being furthermore equipped with at least one loudspeaker, the connecting device comprising a display line, a sound line, and an external connection connector having connection elements distributed in a first series intended to to be connected to the display member of the screens and a second series intended to be connected to the loudspeaker of the screen of the first type or to the display member of the screen of the second type, the a display line being connected to the connecting elements of the first series, the sound line being connected to an input of a switching member which has an output connected to the connection elements of the second series and which is by a connected screen type detecting element, the detecting element being connected to connection elements of the connector and to the switching member for controlling the latter in a state of connection of the sound line with the connector when the connected screen is of the first type, and a disconnection state of the sound system of the connector when the screen connected is of the second type.
Ainsi, lorsqu'un écran du premier type est raccordé au dispositif de raccordement, l'organe de commutation relie la ligne de sonorisation au haut-parleur. On utilise de la sorte des éléments de connexion inutilisés par l'organe d'affichage de l'écran du premier type pour faire passer un signal électrique vers le haut-parleur. En revanche, lorsqu'un écran du deuxième type est raccordé au dispositif de raccordement, l'organe de commutation déconnecte la ligne de sonorisation de la deuxième série d'éléments de con- nexion de sorte que la ligne de sonorisation n'est pas raccordée à l'organe d'affichage de l'écran du deuxième type. Il n'y a donc pas de risque de détérioration de l'organe d'affichage de l'écran du deuxième type en raison de la délivrance de signaux électriques d'un niveau incompatible avec son fonctionnement.Thus, when a screen of the first type is connected to the connecting device, the switching member connects the sound line to the loudspeaker. In this way, unused connection elements are used by the display member of the screen of the first type to pass an electrical signal to the loudspeaker. On the other hand, when a screen of the second type is connected to the connecting device, the switching device disconnects the sound line of the second set of connection elements so that the sound line is not connected. to the screen display member of the second type. There is therefore no risk of deterioration of the screen display member of the second type due to the delivery of electrical signals of a level incompatible with its operation.
De préférence, l'organe de commutation dans son état de déconnexion de la ligne de sonorisation raccorde la ligne d'affichage à la deuxième série d'éléments de connexion du connecteur de raccordement externe. Ainsi, lorsqu'un écran du deuxième type est relié au dispositif de raccordement, l'organe de commutation va relier la ligne d'affichage à l'organe d'affichage de l'écran via la deuxième série d'éléments de connexion de sorte que celui-ci peut fonctionner normalement. Selon des modes de réalisation particuliers, l'élément de détection comprend un élément de mesure d'une caractéristique électrique entre les éléments de connexion auxquels il est relié ou l'élément de détection est associé à un organe de récupération d'une identification de l'écran à raccorder.Preferably, the switching member in its state of disconnection of the sound line connects the display line to the second series of connection elements of the external connection connector. Thus, when a screen of the second type is connected to the connection device, the switching member will connect the display line to the display member of the screen via the second series of connection elements so that that it can work normally. According to particular embodiments, the detection element comprises a measuring element of an electrical characteristic between the connection elements to which it is connected or the detection element is associated with a recovery member of an identification device. 'screen to connect.
Ces modes de réalisation sont particulièrement simples et permettent une détection fiable du type d'écran raccordé . L'invention a également pour objet un écran comportant un organe d'affichage, au moins un haut-parleur et un connecteur de raccordement externe. L'organe d'affichage est relié à une première série d'éléments de connexion du connecteur de raccordement externe et le haut-parleur est relié à une deuxième série d'éléments de connexion du connecteur de raccordement externe .These embodiments are particularly simple and allow reliable detection of the type of screen connected. The invention also relates to a screen comprising a display member, at least one loudspeaker and an external connection connector. The display member is connected to a first series of connection elements of the external connection connector and the speaker is connected to a second series of connection elements of the external connection connector.
Un tel écran peut être relié au dispositif de raccordement présenté ci-dessus en fournissant une sonorisation. Cet écran a en outre une structure simple et le haut- parleur peu recevoir directement des signaux analogiques.Such a screen can be connected to the connection device presented above by providing a sound system. This screen also has a simple structure and the speaker can directly receive analog signals.
D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit de modes de réalisation particuliers non limitatifs de 1 ' invention. BREVE DESCRIPTION DES DESSINSOther features and advantages of the invention will emerge on reading the following description of particular non-limiting embodiments of the invention. BRIEF DESCRIPTION OF THE DRAWINGS
II sera fait référence aux dessins annexés parmi lesquels :Reference will be made to the appended drawings, among which:
- la figure 1 est une vue schématique générale d'une unité électronique et de deux écrans d'un premier et d'un deuxième types différents raccordables à cette unité électronique,FIG. 1 is a general schematic view of an electronic unit and two screens of first and second different types connectable to this electronic unit,
- la figure 2 est une vue schématique partielle d'une unité électronique reliée à un écran du premier type par un dispositif de raccordement conforme à un premier mode de réalisation de l'invention,FIG. 2 is a partial schematic view of an electronic unit connected to a screen of the first type by a connection device according to a first embodiment of the invention,
- la figure 3 est une vue analogue à la figure 1, d'une unité électronique reliée à un écran du premier type par un dispositif de raccordement conforme à un deuxième mode de réalisation de l'invention. DESCRIPTION DETAILLEE DE L'INVENTION En référence à la figure 1, la présente invention concerne une unité électronique généralement désignée en 1 destinée à être raccordée indifféremment à un écran d'un premier type, généralement désigné en 2, et à un écran d'un deuxième type généralement désigné en 3.- Figure 3 is a view similar to Figure 1, an electronic unit connected to a screen of the first type by a connecting device according to a second embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION With reference to FIG. 1, the present invention relates to an electronic unit generally designated in 1 intended to be connected indifferently to a screen of a first type, generally designated 2, and to a screen of one second type generally designated in 3.
L'unité électronique 1 est ici un terminal informatique comprenant notamment de façon connue en soi une carte mère équipée d'un processeur et d'une mémoire vive, un dis- que dur, un organe d'accès à Internet... : ces composants n'ayant pas de rapport direct avec l'invention n'ont pas été représentés. L'unité électronique 1 comprend en outre une carte graphique 4 et une carte audio 5 reliées à un connecteur de raccordement externe 6 par une ligne d'affichage, généralement désignée en 7, et une ligne de sonorisation, généralement désignée en 8, d'un dispositif de raccordement 9 de l'unité électronique 1 aux écrans 2, 3.The electronic unit 1 is here a computer terminal comprising in particular a known way in itself a motherboard equipped with a processor and a random access memory, a hard disk, an access member to the Internet ...: these components not directly related to the invention have not been shown. The electronic unit 1 further comprises a graphics card 4 and an audio card 5 connected to an external connection connector 6 by a display line, generally designated 7, and a sound line, generally designated 8, of a connection device 9 of the electronic unit 1 to the screens 2, 3.
Le connecteur de raccordement externe 6, connu en lui-même, est agencé pour satisfaire au standard DVI (pour "Digital Visual Interface") et comporte vingt-quatre éléments de connexion référencés 10.1 à 10.24 pour les besoins de la description.The external connection connector 6, known in itself, is arranged to meet the DVI standard (for "Digital Visual Interface") and comprises twenty-four connection elements referenced 10.1 to 10.24 for the purposes of the description.
En référence également à la figure 2, la ligne d'affichage 7 comprend dix-huit conducteurs reliés à une première série d'éléments de connexion référencés 10.1 à 10.18.With reference also to FIG. 2, the display line 7 comprises eighteen conductors connected to a first series of connection elements referenced 10.1 to 10.18.
La ligne de sonorisation 8 comprend deux paires de conducteurs correspondant à une voie audio gauche et une voie audio droite et est agencée pour transmettre des signaux électriques audio, analogiques et pré-amplifiés. Un conducteur de chaque paire est relié directement à un élément de connexion 10.21, 10.22 et l'autre conducteur de chaque paire est relié chacun à une entrée d'un organe de commutation 11 comportant pour chaque conducteur une sortie reliée aux éléments de connexion 10.19 et 10.20. L'élément de commutation est ici un relais électromécanique normalement fermé . Un organe de détection 12 du type d'écran raccordé est relié aux éléments de connexion 10.23 et 10.24 et à l'organe de commutation 11 pour commander ce dernier entre un état de connexion des conducteurs de la ligne de sonorisation 6 aux éléments de connexion 10.19 à 10.22 et un état de déconnexion des conducteurs de la ligne de sonorisation 6 et des éléments de connexion 10.19 à 10.22. L'organe de détection 12 comprend un comparateur 13 ayant une entrée reliée par un conducteur 14 à l'élément de connexion 10.23 et une sortie reliée à l'organe de commutation 11. Le con- ducteur 14 est relié à la masse par une résistance 16. La résistance 16 a une valeur inférieure à un kΩ. L'élément de connexion 10.24 est lui relié à une source de tension 15.The sound line 8 comprises two pairs of conductors corresponding to a left audio channel and a right audio channel and is arranged to transmit audio electrical signals, analog and pre-amplified. One conductor of each pair is connected directly to a connecting member 10.21, 10.22 and the other conductor of each pair is each connected to an input of a lead member. switching 11 comprising for each conductor an output connected to the connection elements 10.19 and 10.20. The switching element here is a normally closed electromechanical relay. A detection member 12 of the connected screen type is connected to the connection elements 10.23 and 10.24 and to the switching member 11 to control the latter between a connection state of the conductors of the sound line 6 to the connection elements 10.19 at 10.22 and a state of disconnection of the conductors of the sound line 6 and the connection elements 10.19 to 10.22. The detection element 12 comprises a comparator 13 having an input connected by a conductor 14 to the connection element 10.23 and an output connected to the switching element 11. The conductor 14 is connected to the ground by a resistor 16. Resistor 16 has a value less than one kΩ. The connection element 10.24 is connected to a voltage source 15.
Les éléments de connexion 10.19 à 10.24 forment une deuxième série d'éléments de connexion. L'écran 2 comprend un organe d'affichage 17, deux haut-parleurs 18 gauche et droite, et un connecteur de raccordement externe 19 au standard DVI ayant des éléments de connexion 20.1 à 20.24 destinés à coopérer avec les éléments de connexion 10.1 à 10.24 du connecteur de raccorde- ment externe 6.The connection elements 10.19 to 10.24 form a second series of connection elements. The screen 2 comprises a display member 17, two speakers 18 left and right, and an external connection connector 19 to the DVI standard having connection elements 20.1 to 20.24 for cooperating with the connection elements 10.1 to 10.24 of the external connection connector 6.
L'organe d'affichage 17 a une taille inférieure à 21 pouces et est relié par des conducteurs aux éléments de connexion 20.1 à 20.18 du connecteur de raccordement externe 19. Un des haut-parleurs 18 est relié aux éléments de connexion 20.19 et 20.21 et l'autre haut-parleur 18 est relié aux éléments de connexion 20.20 et 20.22.The display member 17 has a size less than 21 inches and is connected by conductors to the connection members 20.1 to 20.18 of the external connection connector 19. One of the speakers 18 is connected to the connection members 20.19 and 20.21 and the other speaker 18 is connected to the connection elements 20.20 and 20.22.
Une résistance 24 de 1 kΩ est raccordée entre les éléments de connexion 20.23 et 20.24. L'écran 3 comprend un organe d'affichage 21 et un connecteur de raccordement externe 22 au standard DVI.A resistor 24 of 1 kΩ is connected between the connection elements 20.23 and 20.24. The screen 3 comprises a display member 21 and an external connection connector 22 to the DVI standard.
L'organe d'affichage 21 a une taille supérieure à 21 pouces et est relié par des conducteurs à tous les éléments de connexion 23 du connecteur de raccordement externe 22.The display member 21 has a size larger than 21 inches and is connected by conductors to all the connection elements 23 of the external connection connector 22.
La valeur résistive entre les bornes 23.23 et 23.24 est de l'ordre de plusieurs MΩ si l'écran 3 fonctionne à une résolution supérieure ou égale à 2048 x 1536 (QXGA pour "Quantum Extended Graphics Array") . La ligne' d'affichage 7 est reliée à l'organe d'affichage 17 ou 21 par les éléments de connexion 10.1 à 10.18 et 20.1 à 20.18 quel que soit le type d'écran, 2 ou 3 , raccordé .The resistive value between the terminals 23.23 and 23.24 is of the order of several MΩ if the screen 3 operates at a resolution greater than or equal to 2048 × 1536 (QXGA for "Quantum Extended Graphics Array"). Line 'display 7 is connected to the display member 17 or 21 by the connecting elements 10.1 to 10.18 and 20.1 to 20.18 regardless of the type of screen, 2 or 3, connected.
Lorsqu'un écran 2 est raccordé à l'unité électroni- que 1, les éléments de connexion 10.23 et 10.24 sont reliés aux éléments de connexion 20.23 et 20.24 qui eux sont raccordés à une résistance inférieure à 1 kΩ. Cette résistance infinie est détectée par le comparateur 13 qui laisse l'organe de commutation 11 dans son état de connexion (l'organe de commutation 11 est normalement fermé) . La ligne de sonorisation 8 est donc reliée aux haut-parleurs 18 par les éléments de connexion 10.19 à 10.22 et 20.19 à 20.22. Des signaux analogiques transitent ainsi par ces éléments de connexion pour alimenter directement les haut-parleurs 18. Le signal audio envoyé aux haut-parleurs 18 est un signal audio analogique préamplifié. Ainsi, il n'est pas nécessaire de prévoir dans l'écran un amplificateur qui pourrait perturber l'organe d'affichage 17 ni un convertisseur numérique analogique et l'électronique associée qui compliqueraient la structure de l'écran.When a screen 2 is connected to the electronic unit 1, the connecting elements 10.23 and 10.24 are connected to the connecting elements 20.23 and 20.24 which are connected to them with a resistance of less than 1 kΩ. This infinite resistance is detected by the comparator 13 which leaves the switching member 11 in its connection state (the switching member 11 is normally closed). The sound line 8 is thus connected to the speakers 18 by the connection elements 10.19 to 10.22 and 20.19 to 20.22. Analog signals thus pass through these connection elements to directly supply the loudspeakers 18. The audio signal sent to the loudspeakers 18 is a preamplified analog audio signal. Thus, it is not necessary to provide in the screen an amplifier that could disturb the display member 17 or a digital converter and associated electronics that complicate the structure of the screen.
Lorsqu'un écran 3 est raccordé à l'unité électronique 1, les éléments de connexion 10.23 et 10.24 sont raccordés à l'organe d'affichage si la résolution de l'écran 3 est supérieure à la résolution QXGA. La résistance aux bor- nés de ces éléments est de l'ordre de quelques MΩ. Lorsque le comparateur 13 détecte une telle résistance, il commande l'élément de commutation 11 dans son état de déconnexion. Seule la ligne d'affichage 7 est alors raccordée à l'organe d'affichage 21. L'organe d'affichage 21, de résolution égale ou supérieure à 2048 x 1536 (QXGA) , ne fonctionne alors que comme un écran de résolution inférieure à QXGA.When a screen 3 is connected to the electronic unit 1, the connection elements 10.23 and 10.24 are connected to the display member if the resolution of the screen 3 is greater than the QXGA resolution. Resistance to born of these elements is of the order of a few MΩ. When the comparator 13 detects such a resistance, it controls the switching element 11 in its disconnected state. Only the display line 7 is then connected to the display member 21. The display member 21, with a resolution equal to or greater than 2048 × 1536 (QXGA), then only functions as a lower resolution screen. at QXGA.
Dans l'exemple décrit, l'organe de commutation 11 est normalement fermé car l'unité informatique 1 et l'écran 2 sont destinés à être vendus ensemble, un écran 3 ne risquant d'être raccordé qu'en dépannage et temporairement.In the example described, the switching member 11 is normally closed because the computer unit 1 and the screen 2 are intended to be sold together, a screen 3 being likely to be connected only in troubleshooting and temporarily.
Les signaux électriques audio pré-amplifiés peuvent avoir une tension maximale de 12 volts. En l'absence de l'organe de commutation 11 et de l'organe de détection 12, une telle tension risquerait de détruire l'organe d'affichage 21 de l'écran 3 si la ligne de sonorisation 8 était reliée audit organe d'affichage 21.Pre-amplified audio electrical signals can have a maximum voltage of 12 volts. In the absence of the switching member 11 and the detection member 12, such a voltage could destroy the display member 21 of the screen 3 if the sound line 8 was connected to said body display 21.
En remarque, si un écran d'un troisième type, de résolution inférieure à la résolution QXGA et non équipé de haut-parleur est raccordé à l'unité électronique 1, les éléments de connexion 10.23 et 10.24 ne sont pas raccordés de sorte que la résistance entre ces bornes est infinie. Lorsque le comparateur détecte une telle résistance, il commande l'élément de commutation 11 dans son état de dé- connexion. Seule la ligne d'affichage 7 est alors raccordée à l'organe d'affichage de l'écran.As a note, if a screen of a third type, of resolution less than the QXGA resolution and not equipped with a speaker is connected to the electronic unit 1, the connection elements 10.23 and 10.24 are not connected so that the resistance between these bounds is infinite. When the comparator detects such a resistance, it controls the switching element 11 in its disconnected state. Only the display line 7 is then connected to the display member of the screen.
En référence à la figure 3 , selon un deuxième mode de réalisation, la ligne de sonorisation 8 est reliée à l'entrée d'un organe d'amplification 31 ayant une sortie reliée aux éléments de connexion 10.19 à 10.22. L'organe de détection 9 est identique à celui du premier mode de réalisation, la sortie du comparateur 13 étant reliée à l'entrée d'invalidation de l'organe d'amplification 31. On comprend que lorsque le comparateur 13 détecte une résistance supé- rieure à quelques kΩ, il émet un signal vers l'entrée d'invalidation pour couper la liaison entre la ligne de sonorisation 8 et les éléments de connexion 10.19 à 10.22.Referring to Figure 3, according to a second embodiment, the sound line 8 is connected to the input of an amplifying member 31 having an output connected to the connection elements 10.19 to 10.22. The detection member 9 is identical to that of the first embodiment, the output of the comparator 13 being connected to the invalidation input of the amplification member 31. It is understood that when the comparator 13 detects a higher resistance - greater than a few kΩ, it transmits a signal to the disable input to cut the link between the PA line 8 and the connection elements 10.19 to 10.22.
Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et on peut y apporter des variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications.Of course, the invention is not limited to the embodiment described and variants may be provided without departing from the scope of the invention as defined by the claims.
En particulier, le circuit du dispositif de raccordement peut avoir une structure différente de celle dé- crite. L'organe de commutation peut par exemple être un relais statique.In particular, the circuit of the connection device may have a structure different from that described. The switching member may for example be a static relay.
Lorsque l'unité électronique 1 est destinée à être vendue seule, l'élément de commutation 11 peut être normalement ouvert. En cas de raccordement avec un écran 2, la consommation électrique est plus importante que si l'organe de commutation était normalement fermé.When the electronic unit 1 is to be sold alone, the switching element 11 may be normally open. When connected to a screen 2, the power consumption is higher than if the switching element was normally closed.
L'invention n'est pas limitée au standard DVI mais s'applique également à des standards analogues.The invention is not limited to the DVI standard but also applies to similar standards.
L'organe de commutation 11 dans son état de décon- nexion de la ligne de sonorisation 8 peut être agencé pour raccorder la ligne d'affichage 7 à la deuxième série d'éléments de connexion 10.19 à 10.24 du connecteur de raccordement externe 6The switching member 11 in its state of disconnection from the sound line 8 may be arranged to connect the display line 7 to the second series of connection elements 10.19 to 10.24 of the external connection connector 6
L'élément de détection 12 peut être associé à un organe de récupération d'une identification de l'écran à raccorder. Cette identification peut par exemple être contenue dans une mémoire de l'écran et être rapatriée vers la carte d'affichage depuis la première série d'éléments de connexion 10.1 à 10.18 en utilisant par exemple un lien de communication série de type "DDC" (pour "Digital DisplayThe detection element 12 may be associated with a device for recovering an identification of the screen to be connected. This identification may for example be contained in a memory of the screen and be repatriated to the display card from the first series of connection elements 10.1 to 10.18 using for example a serial communication link type "DDC" ( for "Digital Display
Communication" ou communication d'écran numérique). En variante, la mémoire peut être celle d'un module d'identification de l'écran 2 relié aux éléments de connexion 20.23 et 20.24 pour permettre un rapatriement de l'identification vers l'organe de détection depuis les éléments de connexion 10.23 et 10.24. As a variant, the memory may be that of an identification module of the screen 2 connected to the connection elements 20.23 and 20.24 to allow repatriation of the identification. to the sensing element from the connection elements 10.23 and 10.24.

Claims

REVENDICATIONS
1. Dispositif de raccordement d'une unité électronique (1) indifféremment à un écran d'un premier type (2) ou à un écran d'un deuxième type (3) possédant tous deux un organe d'affichage (17, 21), l'écran du premier type étant en outre équipé d'au moins un haut-parleur (18), le dispositif de raccordement comprenant une ligne d'affichage (7), une ligne de sonorisation (8) , et un connecteur de raccordement externe (9) possédant des éléments de connexion (10) répartis en une première série destinée à être raccordée à l'organe d'affichage des écrans et une deuxième série destinée à être raccordée au haut-parleur de l'écran du premier type ou à l'organe d'affichage de l'écran du deuxième type, la ligne d'affichage étant reliée aux élé- ments de connexion de la première série, la ligne de sonorisation étant reliée à une entrée d'un organe de commutation (11) qui a une sortie reliée aux éléments de connexion de la deuxième série et qui est commandé par un élément de détection (12) du type d'écran raccordé, l'élément de dé- tection étant relié à des éléments de connexion du connecteur et à l'organe de commutation pour commander ce dernier dans un état de connexion de la ligne de sonorisation avec le connecteur lorsque l'écran raccordé est du premier type, et un état de déconnexion de la ligne de sonorisation du connecteur lorsque l'écran raccordé est du deuxième type.1. Device for connecting an electronic unit (1) indifferently to a screen of a first type (2) or a screen of a second type (3) both having a display member (17, 21) , the screen of the first type being furthermore equipped with at least one loudspeaker (18), the connecting device comprising a display line (7), a sound line (8), and a connection connector external device (9) having connection elements (10) distributed in a first series intended to be connected to the display member of the screens and a second series intended to be connected to the speaker of the screen of the first type or to the screen display member of the second type, the display line being connected to the connection elements of the first series, the sound line being connected to an input of a switching member (11). ) which has an output connected to the connection elements of the second series and which is com a detection element (12) of the connected screen type, the detecting element being connected to connection elements of the connector and to the switching member for controlling the latter in a connection state of the public address line with the connector when the connected display is of the first type, and a disconnect state of the connector's audio line when the connected display is of the second type.
2. Dispositif selon la revendication I7 caractérisé en ce que l'organe de commutation (11) dans son état de déconnexion de la ligne de sonorisation raccorde la ligne d'affichage (7) à la deuxième série d'éléments de connexion (10) du connecteur de raccordement externe (6) .2. Device according to claim I 7 characterized in that the switching member (11) in its state of disconnection of the sound line connects the display line (7) to the second series of connection elements (10). ) of the external connection connector (6).
3. Dispositif selon la revendication I7 caractérisé en ce que l'élément de détection (12) comprend un élément de mesure (13) d'une caractéristique électrique entre les éléments de connexion (10) auxquels il est relié. 3. Device according to claim I 7 characterized in that the sensing element (12) comprises a measuring element (13) of an electrical characteristic between the connecting elements (10) to which it is connected.
4. Dispositif selon la revendication 1, caractérisé en ce que l'élément de détection (12) est associé à un organe de récupération d'une identification de l'écran à raccorder. 4. Device according to claim 1, characterized in that the detection element (12) is associated with a recovery member of an identification of the screen to be connected.
5. Ecran (2) comportant un organe d'affichage (17), au moins un haut-parleur (18) et un connecteur de raccordement externe (19), caractérisé en ce que l'organe d'affichage est relié à une première série d'éléments de connexion (20) du connecteur de raccordement externe, et le haut-parleur est relié à une deuxième série d'éléments de connexion (20) du connecteur de raccordement externe.5. Screen (2) comprising a display member (17), at least one speaker (18) and an external connection connector (19), characterized in that the display member is connected to a first series of connection elements (20) of the external connection connector, and the loudspeaker is connected to a second series of connection elements (20) of the external connection connector.
6. Ecran selon la revendication 5, caractérisé en ce qu'il comprend un module d'identification relié à la deuxième série d'éléments de connexion (20) . 6. Screen according to claim 5, characterized in that it comprises an identification module connected to the second series of connection elements (20).
7. Ecran selon la revendication 5, caractérisé en ce que le haut-parleur (18) est relié directement à la deuxième série d'éléments de connexion (20) du connecteur de raccordement externe (6) . Screen according to claim 5, characterized in that the loudspeaker (18) is connected directly to the second series of connection elements (20) of the external connection connector (6).
EP06755538A 2005-06-08 2006-06-01 Connection to displays of different types Not-in-force EP1889251B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0505809A FR2887081B1 (en) 2005-06-08 2005-06-08 DEVICE FOR CONNECTING AN ELECTRONIC UNIT INDIFFERENTLY TO SCREENS OF DIFFERENT TYPES AND SCREEN THEREFOR
PCT/FR2006/001242 WO2006131624A1 (en) 2005-06-08 2006-06-01 Connection to displays of different types

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EP1889251B1 EP1889251B1 (en) 2009-09-30

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EP (1) EP1889251B1 (en)
AT (1) ATE444547T1 (en)
CA (1) CA2611012A1 (en)
DE (1) DE602006009509D1 (en)
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US20020049879A1 (en) * 2000-10-20 2002-04-25 Sony Corporation And Sony Electronics, Inc. Cable and connection with integrated DVI and IEEE 1394 capabilities
US20020118762A1 (en) * 2000-12-20 2002-08-29 Shakiba Mohammad Hossein Digital audio transmission over a digital visual interface (DVI) link
US20020163598A1 (en) * 2001-01-24 2002-11-07 Christopher Pasqualino Digital visual interface supporting transport of audio and auxiliary data
TWI282691B (en) * 2001-03-23 2007-06-11 Matsushita Electric Ind Co Ltd Data-transmission method, data-transmission device, data-reception method and data reception device
KR100517502B1 (en) * 2003-05-26 2005-09-28 삼성전자주식회사 Apparatus and method for reproducing signal from DVI/HDMI compatible connector
US20050113948A1 (en) * 2003-11-22 2005-05-26 Own Christopher S. Digital-to-analog audio conversion

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Title
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DE602006009509D1 (en) 2009-11-12
WO2006131624A1 (en) 2006-12-14
ATE444547T1 (en) 2009-10-15
US8539121B2 (en) 2013-09-17
EP1889251B1 (en) 2009-09-30
CA2611012A1 (en) 2006-12-14
FR2887081B1 (en) 2007-08-17
US20090128480A1 (en) 2009-05-21
FR2887081A1 (en) 2006-12-15

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