EP0167445B1 - Display device consisting of individual electrically controlled elements controlled by a diode matrix - Google Patents
Display device consisting of individual electrically controlled elements controlled by a diode matrix Download PDFInfo
- Publication number
- EP0167445B1 EP0167445B1 EP85401258A EP85401258A EP0167445B1 EP 0167445 B1 EP0167445 B1 EP 0167445B1 EP 85401258 A EP85401258 A EP 85401258A EP 85401258 A EP85401258 A EP 85401258A EP 0167445 B1 EP0167445 B1 EP 0167445B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- display
- diode
- display device
- diodes
- short
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
- G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field
Definitions
- the present invention relates to display devices which consist of unitary electrically controlled display elements which are selectively supplied via a matrix array of diodes; these unitary display elements are for example constituted by pads mounted to pivot between a display position and a rest position, their pivoting being controlled by a relay preferably with double effect; these display elements can also be constituted by light devices.
- the invention applies more particularly to display panels or devices which are placed in places which are difficult to access or in places which can only be accessed for short and infrequent periods. This is the case in particular, display panels used on motorways and more particularly on motorways or busy urban roads for which interruption of traffic for maintenance reasons risks creating problems and must therefore be limited in duration and frequency.
- the invention therefore relates to a display device of the type described above in which any failure concerning a display element does not cause disturbances for the rest of the display device and in particular in which the setting short circuit of a control diode does not create stray current in the other display elements.
- the display device is notably remarkable in that each display element is supplied for each direction of the control current, by two diodes in series and in that, during maintenance operations, the elements of display are supplied at a sufficiently low voltage so that the display elements are not activated and at least equal to a few times the direct voltage drop of a diode and the absorbed current is measured to detect the diodes in short circuit.
- the maintenance operations are carried out without activating the display devices, which makes it possible to avoid the display of an erroneous or illegible message on the panel during the maintenance operations.
- the operation of detecting short-circuit diodes is carried out automatically during periods of non-operation of the display device and the result of this operation is recorded.
- the operation for detecting diodes in short circuit is controlled and controlled by this microprocessor.
- the display device is part of a set of display devices controlled by a central station to which they are connected by a telecommunications network
- the result of the operation for detecting diodes in short circuit is forwarded to said central station.
- the faulty display panels being known in advance, it will suffice to intervene on these faulty devices only, which will further reduce the duration of the necessary interventions.
- FIG. 1 the diagram of part of the electrical circuit of a display device with electromechanical display elements such as articulated pads (not shown) which can take two positions, one of display in which they are visible on the display panel and the another rest in which they are erased and invisible on the display panel.
- the movement of these display pads is controlled in both directions, namely towards the display position and towards the rest position by means of a winding (1) supplied by a matrix array of diodes so as to allow the passage of a current in one or the other direction.
- This network comprises vertical “column” conductors (2) to each of which are connected one of the terminals of the coils (1) of the same column and horizontal “line” conductors (3 and 4); the horizontal conductors (3) are each connected to the second terminal of the coils (1) of the same line by means of a first control diode (5), each of the diodes (5) being connected by the same electrode (for example the anode in the example shown) to the coil (1).
- each of the conductors (4) is connected to the second terminal of the coils (1) of the same line by means of a diode (6) connected in the opposite direction, that is to say with its cathode connected to the coil (1).
- Figure (2) which is a diagram similar to that of Figure (1) of a device according to the invention, a second diode is introduced in series with each diode two diodes in series having the same direction of direct conduction.
- each activation of the display element is controlled by means of two diodes in series, namely the diodes (5 ) and (5 ') for one of the movements and the diodes (6) and (6') for the reverse movement.
- the voltage 30 V is replaced by a voltage of 5 V, that is to say a voltage equal to approximately 7 times the direct voltage drop of a diode
- the increase in current resulting from the short-circuiting of a diode and consequently from the suppression of the direct voltage drop of this diode is of the order of 20%, which can easily be detected.
- the operation for detecting diodes in short circuit is carried out while the device or display panel is not in operation; this operation can be carried out automatically by means of a control device successively testing all the display devices, the result of these tests being recorded so that when the display device can be accessed there is no 'Only replace the defective display elements.
- this operation of detecting diodes in short circuit can be controlled by this microprocessor.
- a certain number of display devices are part of a set controlled by a central station to which they are connected by a telecommunication system, this is for example the case of all the display panels motorway or expressway.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
La présente invention concerne les dispositifs d'affichage qui sont constitués par des éléments unitaires d'affichage à commande électrique qui sont alimentés de manière sélective par l'intermédiaire d'un réseau matriciel à diodes; ces éléments unitaires d'affichage sont par exemple constitués par des pastilles montées à pivotement entre une position d'affichage et une position de repos, leur pivotement étant commandé par un relais de préférence à double effet; ces éléments d'affichage peuvent également être constitués par des dispositifs lumineux.The present invention relates to display devices which consist of unitary electrically controlled display elements which are selectively supplied via a matrix array of diodes; these unitary display elements are for example constituted by pads mounted to pivot between a display position and a rest position, their pivoting being controlled by a relay preferably with double effect; these display elements can also be constituted by light devices.
L'invention s'applique plus particulièrement aux panneaux ou dispositifs d'affichage qui sont disposés dans des endroits difficiles d'accès ou dans des endroits auxquels on ne peut accéder que pendant des périodes courtes et peu fréquentes. C'est le cas en particulier, des panneaux d'affichage utilisés sur autoroute et plus particulièrement sur les autoroutes ou voies à grande circulation urbaines pour'lesquelles une interruption du trafic pour des raisons de maintenance risque de créer des problèmes et doit donc être limitée en durée et en fréquence.The invention applies more particularly to display panels or devices which are placed in places which are difficult to access or in places which can only be accessed for short and infrequent periods. This is the case in particular, display panels used on motorways and more particularly on motorways or busy urban roads for which interruption of traffic for maintenance reasons risks creating problems and must therefore be limited in duration and frequency.
Le document CH-A 516204 décrit un dispositif d'affichage à éléments unitaires de type électromécanique dans lequel chaque relais commandant le basculement d'une Þastille est commandé dans les deux sens pour la mise de la pastille en position d'affichage et pour son retour en position de repos, au moyen d'un réseau matriciel à diodes comportant une diode reliée au relais pour chaque sens du courant de commande. Les pannes pouvant affecter chaque élément d'affichage sont de deux sortes:
- - dans le premier cas, la liaison électrique est interrompue par exemple par la coupure d'un fil de bobine ou lorsqu'une diode de commande reste à l'état bloqué; une telle panne n'affecte que l'élément d'affichage défectueux et le message affiché sur le panneau reste lisible.
- - in the first case, the electrical connection is interrupted for example by cutting a coil wire or when a control diode remains in the blocked state; such a failure only affects the defective display element and the message displayed on the panel remains legible.
Par contre, lorsqu'une des deux diodes de commande d'un élément d'affichage se met en court-circuit, celà crée, du fait des courants dérivés par cette diode en court circuit, une perturbation sur une bonne partie du panneau d'affichage dont le message peut devenir illisible.On the other hand, when one of the two control diodes of a display element short-circuits, this creates, due to the currents derived by this short-circuit diode, a disturbance on a good part of the panel. display whose message may become illegible.
L'invention a donc pour objet un dispositif d'affichage du type décrit ci-dessus dans lequel toute panne concernant un élément d'affichage n'entraîne pas de perturbations pour le reste du dispositif d'affichage et en particulier dans lequel la mise en court circuit d'une diode de commande ne crée pas de courant parasite dans les autres éléments d'affichage.The invention therefore relates to a display device of the type described above in which any failure concerning a display element does not cause disturbances for the rest of the display device and in particular in which the setting short circuit of a control diode does not create stray current in the other display elements.
Le dispositif d'affichage selon l'invention est notamment remarquable en ce que chaque élément d'affichage est alimenté pour chaque sens du courant de commande, par deux diodes en série et en ce que, lors des opérations de maintenance, les éléments d'affichage sont alimentés sous une tension suffisamment faible pour que les éléments d'affichage ne soient pas activés et au moins égale à quelques fois la chute de tension directe d'une diode et on mesure le courant absorbé pour détecter les diodes en court-circuit.The display device according to the invention is notably remarkable in that each display element is supplied for each direction of the control current, by two diodes in series and in that, during maintenance operations, the elements of display are supplied at a sufficiently low voltage so that the display elements are not activated and at least equal to a few times the direct voltage drop of a diode and the absorbed current is measured to detect the diodes in short circuit.
Grace à la disposition d'une deuxième diode de commande en série avec la première, la défaillance d'une diode se mettant en court-circuit n'entraîne pas de courant parasite dans les circuits de commande des autres éléments d'affichage; de tels courants parasites ne seraient créés que dans le cas extrêmement improbable où les deux diodes en série d'une même commande seraient simultanément défectueuses par mise en court-circuit.Thanks to the provision of a second control diode in series with the first, the failure of a short-circuiting diode does not cause stray current in the control circuits of the other display elements; such parasitic currents would only be created in the extremely improbable case where the two diodes in series of the same command would be simultaneously defective by short-circuiting.
Par ailleurs, selon l'invention, les opérations de maintenance s'effectuent sans activer les dispositifs d'affichage, ce qui permet d'éviter l'affichage d'un message erroné ou illisible sur le panneau lors des opérations de maintenance.Furthermore, according to the invention, the maintenance operations are carried out without activating the display devices, which makes it possible to avoid the display of an erroneous or illegible message on the panel during the maintenance operations.
Du fait que lorsqu'une diode est en court-circuit, la tension à ses bornes est nulle, le courant absorbé sous une tension qui est légèrement supérieure à la somme des chutes de tension directe aux bornes des diodes en série, subira une variation positive lorsqu'une des deux diodes sera en court-circuit et cette variation sera suffisamment importante en valeur relative pour être facilement détectée lors de la mesure du courant absorbé.Because when a diode is short-circuited, the voltage across its terminals is zero, the current absorbed under a voltage which is slightly greater than the sum of the direct voltage drops across the diodes in series, will undergo a positive variation when one of the two diodes is in short circuit and this variation will be significant enough in relative value to be easily detected during the measurement of the absorbed current.
Selon une autre caractéristique de l'invention, l'opération de détection des diodes en court-circuit est effectuée de manière automatique pendant des périodes de non fonctionement du dispositif d'affichage et le résultat de cette opération est enregistré.According to another characteristic of the invention, the operation of detecting short-circuit diodes is carried out automatically during periods of non-operation of the display device and the result of this operation is recorded.
Ceci permet de diminuer au maximum les opérations de remise en état du dispositif d'affichage puisqu'il suffira de remplacer les éléments d'affichage dont le fonctionnement déffectueux aura été enregistré.This makes it possible to reduce as much as possible the operations for repairing the display device since it will suffice to replace the display elements whose faulty operation has been recorded.
Avantageusement, dans le cas où le dispositif d'affichage est muni d'un micro-processeur de commande, l'opération de détection des diodes en court-circuit est commandée et pilotée par ce microprocesseur.Advantageously, in the case where the display device is provided with a control microprocessor, the operation for detecting diodes in short circuit is controlled and controlled by this microprocessor.
Dans le cas où le dispositif d'affichage fait partie d'un ensemble de dispositifs d'affichage commandé par un poste central auquel ils sont connectés par un réseau de télécommunication, le résultat de l'opération de détection des diodes en court-circuit est transmis au dit poste central. De ce fait, les panneaux d'affichage en panne étant connus à l'avance, il suffira d'intervenir sur ces seuls dispositifs en panne, ce qui réduira encore la durée des interventions nécessaires.In the case where the display device is part of a set of display devices controlled by a central station to which they are connected by a telecommunications network, the result of the operation for detecting diodes in short circuit is forwarded to said central station. As a result, the faulty display panels being known in advance, it will suffice to intervene on these faulty devices only, which will further reduce the duration of the necessary interventions.
D'autres caractéristiques et avantages de l'invention ressortiront de la description qui suit, faite en se référant aux dessins, sur lesquels:
- - la Fig. 1 représente un schéma électrique d'une partie d'un dispositif d'affichage de type connu.
- - la Fig.2 est un schéma analogue représentant un dispositif d'affichage conforme à la présente invention.
- - Fig. 1 shows an electrical diagram of part of a display device of known type.
- - Fig.2 is a similar diagram showing a display device according to the present invention.
On voit sur la figure 1 le schéma d'une partie du circuit électrique d'un dispositif d'affichage à éléments d'affichage électromécanique telles que des pastilles articulées (non représentées) qui peuvent prendre deux positions, l'une d'affichage dans laquelle elles sont visibles sur le panneau d'affichage et l'autre de repos dans laquelle elles sont effacées et invisibles sur le panneau d'affichage. Le mouvement de ces pastilles d'affichage est commandé dans les deux sens, à savoir vers la position d'affichage et vers la position de repos au moyen d'un bobinage (1) alimenté par un réseau matriciel à diodes de manière à permettre le passage d'un courant dans l'un ou l'autre sens.We see in Figure 1 the diagram of part of the electrical circuit of a display device with electromechanical display elements such as articulated pads (not shown) which can take two positions, one of display in which they are visible on the display panel and the another rest in which they are erased and invisible on the display panel. The movement of these display pads is controlled in both directions, namely towards the display position and towards the rest position by means of a winding (1) supplied by a matrix array of diodes so as to allow the passage of a current in one or the other direction.
Ce réseau comprend des conducteurs verticaux «de colonne» (2) à chacun desquels sont reliées une des bornes des bobines (1) d'une même colonne et des conducteurs horizontaux «de ligne» (3 et 4); les conducteurs horizontaux (3) sont reliées chacun à la deuxième borne des bobines (1) d'une même ligne par l'intermédiaire d'une première diode de commande (5), chacune des diodes (5) étant reliée par la même électrode (par exemple l'anode dans l'exemple représenté) à la bobine (1).This network comprises vertical “column” conductors (2) to each of which are connected one of the terminals of the coils (1) of the same column and horizontal “line” conductors (3 and 4); the horizontal conductors (3) are each connected to the second terminal of the coils (1) of the same line by means of a first control diode (5), each of the diodes (5) being connected by the same electrode (for example the anode in the example shown) to the coil (1).
De façon analogue, chacun des conducteurs (4) est relié à la deuxième borne des bobines (1) d'une même ligne par l'intermédiaire d'une diode (6) branchée en sens inverse c'est-à-dire avec sa cathode reliée à la bobine (1).Similarly, each of the conductors (4) is connected to the second terminal of the coils (1) of the same line by means of a diode (6) connected in the opposite direction, that is to say with its cathode connected to the coil (1).
On voit que la commande d'un élément d'affichage constitué par un pastille vers sa position de repos ou sa position de fonctionnement est obtenue en appliquant une tension appropriée entre le conducteur (2) de la colonne de l'élément considéré, et le conducteur (3) et le conducteur (4) de la ligne de l'élément considéré.It can be seen that the control of a display element constituted by a chip towards its rest position or its operating position is obtained by applying an appropriate voltage between the conductor (2) of the column of the element in question, and the conductor (3) and the conductor (4) of the line of the element considered.
On voit que lorsqu'une diode (5) se met en court-circuit celà entraîne la création de courants dérivés, en particulier par l'intermédiaire des conducteurs (3, 4) et par suite, un mauvais fonctionnement d'une partie du dispositif d'affichage dont le message affiché peut devenir incompréhensible.We see that when a diode (5) short-circuits this leads to the creation of derivative currents, in particular through the conductors (3, 4) and consequently, a malfunction of part of the device display whose displayed message can become incomprehensible.
Conformément à l'invention, comme on peut le voir sur la figure (2) qui est un schéma analogue à celui de la figure (1) d'un dispositif conforme à l'invention, on introduit une deuxième diode en série avec chaque diode de commande, les deux diodes en série ayant le même sens de conduction directe.According to the invention, as can be seen in Figure (2) which is a diagram similar to that of Figure (1) of a device according to the invention, a second diode is introduced in series with each diode two diodes in series having the same direction of direct conduction.
Ainsi chaque activation de l'élément d'affichage, c'est-à-dire, chaque mouvement de la pastille d'affichage dans l'exemple représenté, est commandé par l'intermédiaire de deux diodes en série à savoir les diodes (5) et (5') pour l'un des mouvements et les diodes (6) et (6') pour le mouvement inverse.Thus each activation of the display element, that is to say, each movement of the display pad in the example shown, is controlled by means of two diodes in series, namely the diodes (5 ) and (5 ') for one of the movements and the diodes (6) and (6') for the reverse movement.
Du fait de la faible valeur de la chute de tension directe d'une diode par rapport à la tension d'alimentation des bobines, l'introduction d'une deuxième diode en série a une influence négligeable sur le fonctionnement du dispositif d'affichage. Ainsi pour une tension d'alimentation de 30 V, destinée à fournir un courant de commande de 3 A, la diminution du courant de commande n'est que de 2% environ. Par contre, lorsque, pour détecter les diodes en court-circuit on alimente sous une tension suffisamment faible pour que les éléments d'affichage ne soient pas activés mais qui soit au moins égale à plusieurs fois la chute de tension directe d'une diode, l'augmentation de courant créée par la mise en court-circuit d'une diode est suffisamment importante.*n valeur relative pour être facilement mesurée et détectée. Ainsi par exemple si dans l'exemple indiqué précédemment, la tension 30 V est remplacée par une tension de 5 V, c'est-à-dire une tension égale à environ 7 fois la chute de tension directe d'une diode, l'augmentation de courant résultant de la mise en court-circuit d'une diode et par suite, de la suppression de la chute de tension directe de cette diode, est de l'ordre de 20%, ce qui peut facilement être détecté.Due to the low value of the direct voltage drop of a diode relative to the supply voltage of the coils, the introduction of a second diode in series has a negligible influence on the operation of the display device. Thus for a supply voltage of 30 V, intended to supply a control current of 3 A, the reduction in the control current is only about 2%. On the other hand, when, in order to detect the short-circuit diodes, a voltage is supplied which is sufficiently low so that the display elements are not activated but which is at least equal to several times the direct voltage drop of a diode, the increase in current created by the short-circuiting of a diode is sufficiently large. * n relative value to be easily measured and detected. So for example if in the example indicated above, the voltage 30 V is replaced by a voltage of 5 V, that is to say a voltage equal to approximately 7 times the direct voltage drop of a diode, the increase in current resulting from the short-circuiting of a diode and consequently from the suppression of the direct voltage drop of this diode, is of the order of 20%, which can easily be detected.
Avantageusement, l'opération de détection des diodes en court-circuit est réalisée pendant que le dispositif ou panneau d'affichage n'est pas en fonctionnement; cette opération peut être réalisée de manière automatique au moyen d'un dispositif de commande testant successivement tous les dispositifs d'affichage, le résultat de ces tests étant enregistré de manière à ce que lorsque l'on pourra accéder au dispositif d'affichage il n'y aura qu'à effectuer le remplacement des éléments d'affichage défectueux.Advantageously, the operation for detecting diodes in short circuit is carried out while the device or display panel is not in operation; this operation can be carried out automatically by means of a control device successively testing all the display devices, the result of these tests being recorded so that when the display device can be accessed there is no 'Only replace the defective display elements.
Dans le cas où le dispositif d'affichage est commandé par un micro-processeur intégré dans ledit dispositif d'affichage, cette opération de détection des diodes en court-circuit pourra être commandée par ce micro-processeur.In the case where the display device is controlled by a microprocessor integrated in said display device, this operation of detecting diodes in short circuit can be controlled by this microprocessor.
Il est également possible qu'un certain nombre de dipositifs d'affichage fassent partie d'un ensemble commandé par un poste central auquel ils sont reliées par un système de télécommunication, celà est par exemple le cas de l'ensemble des panneaux d'affichage d'une autoroute ou d'une voie rapide. Dans ce cas il est avantageux que le résultat des opérations de détection de diodes en court-circuit soit transmis au poste central de manière que l'on connaisse à l'avance les dipositif d'affichage comportant des éléments défectueux ce qui évite alors d'intervenir sur des dispositifs d'affichage ne comportant pas d'éléments défectueux; celà réduit encore notamment la durée des opérations de maintenance.It is also possible that a certain number of display devices are part of a set controlled by a central station to which they are connected by a telecommunication system, this is for example the case of all the display panels motorway or expressway. In this case, it is advantageous for the result of the short-circuit diode detection operations to be transmitted to the central station so that the display devices comprising defective elements are known in advance, thereby avoiding work on display devices that do not contain defective elements; this notably further reduces the duration of maintenance operations.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85401258T ATE39193T1 (en) | 1984-06-25 | 1985-06-24 | DISPLAY DEVICE WITH INDIVIDUALLY ELECTRICALLY CONTROLLABLE ELEMENTS FROM A DIODE MATRIX. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8409978A FR2566565B1 (en) | 1984-06-25 | 1984-06-25 | DISPLAY DEVICE COMPRISING ELECTRICALLY CONTROLLED UNIT ELEMENTS CONTROLLED BY A DIODE MATRIX NETWORK |
FR8409978 | 1984-06-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0167445A1 EP0167445A1 (en) | 1986-01-08 |
EP0167445B1 true EP0167445B1 (en) | 1988-12-07 |
Family
ID=9305394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85401258A Expired EP0167445B1 (en) | 1984-06-25 | 1985-06-24 | Display device consisting of individual electrically controlled elements controlled by a diode matrix |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0167445B1 (en) |
AT (1) | ATE39193T1 (en) |
CA (1) | CA1249890A (en) |
DE (1) | DE3566744D1 (en) |
FR (1) | FR2566565B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0438614A1 (en) * | 1990-01-23 | 1991-07-31 | Alternative Energy Research Center Inc. | Information display apparatus and method |
DE4024499C1 (en) * | 1990-08-02 | 1991-09-26 | Dambach-Werke Gmbh, 7560 Gaggenau, De |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH516204A (en) * | 1970-01-21 | 1971-11-30 | Fok Gyem Finommech Elekt | Device for the visual transmission of information, in particular for providing information to travelers |
FR2517999B1 (en) * | 1981-12-15 | 1985-06-21 | Peugeot Outillage Elect | MULTI-SPEED PORTABLE DRILL |
-
1984
- 1984-06-25 FR FR8409978A patent/FR2566565B1/en not_active Expired
-
1985
- 1985-06-17 CA CA000484171A patent/CA1249890A/en not_active Expired
- 1985-06-24 DE DE8585401258T patent/DE3566744D1/en not_active Expired
- 1985-06-24 AT AT85401258T patent/ATE39193T1/en active
- 1985-06-24 EP EP85401258A patent/EP0167445B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2566565A1 (en) | 1985-12-27 |
DE3566744D1 (en) | 1989-01-12 |
EP0167445A1 (en) | 1986-01-08 |
FR2566565B1 (en) | 1986-11-28 |
ATE39193T1 (en) | 1988-12-15 |
CA1249890A (en) | 1989-02-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0955619A1 (en) | Management method of a traffic light source | |
EP0687051B1 (en) | Telephone line interface protection | |
EP0244284A1 (en) | Static instantaneous tripping unit for a limiting circuit breaker | |
FR2769988A1 (en) | TRANSISTOR WITH DETECTION FIELD EFFECT HAVING A PLURALITY OF PELLETS FORMING SOURCE OF DETECTION | |
EP0665479A1 (en) | Composite safety switch | |
FR2484740A1 (en) | PROTECTION CIRCUIT FOR A SWITCHING TRANSISTOR AND METHOD FOR MAKING SAME | |
EP0975025B1 (en) | Photoelectric conversion integrated circuit device | |
EP0167445B1 (en) | Display device consisting of individual electrically controlled elements controlled by a diode matrix | |
FR2552246A1 (en) | ||
FR2821932A1 (en) | FAILURE DETECTION METHOD AND DEVICE FOR A SENSOR ARRAY | |
EP1227329A1 (en) | Poor powersupply connection detector circuit | |
EP0080425A1 (en) | Operating, security and diagnostic device for the electrical system of a vehicle | |
EP0895671B1 (en) | Static relay with condition detecting | |
EP0554195B1 (en) | Auto-protected semi-conductor protection component | |
EP0464049A1 (en) | Electrical quenching circuit. | |
FR2631453A1 (en) | FUSE TESTING DEVICE FOR CURRENT INTENSITY MEASURING APPARATUS | |
FR2817972A1 (en) | SYSTEM FOR DETECTING A CABLE FAILURE IN A TREE NETWORK | |
FR2772140A1 (en) | CONFIGURABLE PHOTOELECTRIC CELL | |
CA1213007A (en) | And logic circuit with intrinsic safety | |
FR2770073A1 (en) | Telephone exchange fault display system | |
EP1889251B1 (en) | Connection to displays of different types | |
JP3625402B2 (en) | Semiconductor laser driving circuit, semiconductor laser chip inspection apparatus and assembly apparatus having the same | |
EP0399983B1 (en) | Emergency shutdown for industrial installation | |
BE1010688A7 (en) | Differential switch | |
EP0070941A1 (en) | Circuit for fire alarm apparatus controlled by gas-sensitive semiconductor sensors with low power consumption |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19860304 |
|
17Q | First examination report despatched |
Effective date: 19871022 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE GB IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19881207 Ref country code: SE Effective date: 19881207 |
|
REF | Corresponds to: |
Ref document number: 39193 Country of ref document: AT Date of ref document: 19881215 Kind code of ref document: T |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 3566744 Country of ref document: DE Date of ref document: 19890112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19890630 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19910521 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19910531 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19910614 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19910628 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19910630 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19910821 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19920624 Ref country code: GB Effective date: 19920624 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19920630 Ref country code: CH Effective date: 19920630 Ref country code: LI Effective date: 19920630 |
|
BERE | Be: lapsed |
Owner name: SOC. D'ETUDES POUR LE DEVELOPPEMENT DES PRODUCTIO Effective date: 19920630 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19930101 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19920624 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19930302 |