EP0451056A1 - Telephonic electronic device - Google Patents

Telephonic electronic device Download PDF

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Publication number
EP0451056A1
EP0451056A1 EP91400915A EP91400915A EP0451056A1 EP 0451056 A1 EP0451056 A1 EP 0451056A1 EP 91400915 A EP91400915 A EP 91400915A EP 91400915 A EP91400915 A EP 91400915A EP 0451056 A1 EP0451056 A1 EP 0451056A1
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EP
European Patent Office
Prior art keywords
message
generator
acoustic transmitter
clock
memory
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Granted
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EP91400915A
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German (de)
French (fr)
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EP0451056B1 (en
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Alain Bernard
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Individual
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Individual
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F1/00—Coin inlet arrangements; Coins specially adapted to operate coin-freed mechanisms
    • G07F1/06—Coins specially adapted to operate coin-freed mechanisms
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/0866—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by active credit-cards adapted therefor

Definitions

  • the present invention relates to an electronic telephone device. Its generally flat and ordinarily round shape allows to qualify it as a "token”.
  • the invention finds a particular application in payment systems for telephone services, such as in the system which is the subject of a patent application filed by Alain BERNARD on the day of filing of this application and entitled “System of payment for services by telephone ".
  • Acoustic coupler modems are known which are capable of emitting sounds through a small speaker. This, approached the microphone of a telephone handset, allows the transmission of these sounds over the telephone network.
  • Another modem located at the other end of the link, interprets the data it receives and establishes a connection, for example with a computer.
  • the CCITT International Telegraph and Telephone Consultative Committee
  • Q23 a set of tones corresponding to the twelve digits and signs of the telephone keypad
  • encryption devices are also known, which make it possible to add to a digital signal a series of pseudo-random data evolving over time, so that the initial digital signal can only be found with knowledge of the data sequence and its evolution over time.
  • the object of the present invention is precisely to remedy these drawbacks. To this end, it offers a very simple device of structure and use, without keyboard, emitting a digital message evolving over time, this device being capable of determining itself the instant when it is out of date in order to put itself definitively out of order.
  • the device is characterized in that the means comprises a clock giving the date and determining the expiration time of the device, the message thus depending on the first and second codes and on the date indicated by the clock.
  • the device is characterized in that the means comprises a counter whose content is incremented with each use, the message thus depending on the first and second codes and on the content of the counter.
  • all of the means making up the device of the invention are sealed in a block of solid material, having the shape of a token.
  • the switch is located on one side of the token and the speaker on the other.
  • the material used to constitute the block is preferably a resin or plastic.
  • the device When the device includes a clock, all the clocks of the different tokens are synchronized and set to the time during the manufacture of the token relative to a reference clock.
  • the device J comprises: an acoustic transmitter 10 controlled by a generator 12 (which can be, for example, a 300 baud modem or a multifrequency tone generator according to the Q23 standard), a memory 14, which will preferably be a random access memory, losing its content in the event of power supply shutdown, an electronic and logic circuit 16 connected to memory 14 and controlling the circuit 12.
  • the device also includes a clock 20 giving the date H (for example in minutes), and a battery 22 permanently supplying the clock 20 and the memory 14 but supplying the generator 12 only if a switch 24 has been closed by the effect of a means such than a push button 26 (or any other equivalent means).
  • the clock 20 is a circuit which, on the one hand, gives the elapsed time, counted for example in minutes from the original date of the device and, on the other hand, determines the time remaining to run until the date of expiration.
  • the clock 20 can be constituted by a time base connected, on the one hand, to a minute counter, the content H of this counter appearing on an output 21, and connected, on the other hand, to a minute counter , the zero crossing of this down counter resulting in the appearance of a reset reset signal on an output 23.
  • a period of 10 years represents 5,256,000 minutes which requires 7 digits (from 0 to 9).
  • the lifetime of a token can be 6 months, or 262,800 minutes.
  • the memory 14 contains a first code which is a code for identifying the token. It is a number N introduced during the manufacture of the token by software or by masking of an integrated circuit or by programming.
  • the memory 14 also contains a second code or key C, which is specific to the global telephone system in which the token is used. Naturally, the memory 14 can be made up of two independent memories, one storing the first code, the other the second.
  • the electronic and logic circuit 16 thus has the date H delivered by the clock 20, the identification code N and the key C specific to the global system. Circuit 16 then generates a digital message M which is a function of H, N and C.
  • Those skilled in the art know algorithms for forming such messages.
  • the document US-A-4,601,011 already cited and the Bibliographical references which it contains describe means capable of implementing such algorithms and, at the other end of the line, means capable of carrying out reverse algorithms. It is therefore not necessary to go into the details of these circuits.
  • the sequence constituting the message can therefore be: 7 digits for the date H, 1 check digit for the sum of 9 of the previous 7 digits, 8 digits for the C key, 1 check digit for the sum at 9 of the previous 8 digits, 8 digits for the number N, 1 check digit for the sum at 9 of the previous 8 digits and 1 digit for the sum at 9 of the three check digits.
  • the generator 12 When the message M is formed, the generator 12 consequently controls the loudspeaker 10, which emits a sequence SQ formed of a series of tones.
  • the reset reset signal deactivates the memory 14 and / or the circuit 16. The token is then out of service.
  • circuits clock, memory, logic circuit
  • clock, memory, logic circuit which are shown separated from each other in the accompanying drawing - and this for clarity - can be integrated into a single circuit.
  • functions performed by these circuits can be obtained by programming a more efficient circuit such as a microprocessor or a controller.
  • all of the means shown can be molded in a resin or a plastic material to present the appearance of a token.
  • the push button then appears on one of the faces of the token, the acoustic transmitter being arranged on the other.
  • the token J is placed on the microphone 40 of a telephone handset.
  • FIG. 2 shows the general appearance of the token J of the invention, seen from the front face where the loudspeaker 10 emitting the sound sequence SQ is arranged (the rear face, hidden, corresponds to the push button).

Abstract

The device includes an acoustic transmitter (10), a tone generator (12), a memory (14) containing an identification code (N) and a service key (C), and an electronic circuit (16). A digital message transmitted depends on N and C and changes with each use. The time limitation moment of the device is determined. The device appears in the form of a token.

Description

La présente invention a pour objet un dispositif électronique téléphonique. Sa forme générale plate et ordinairement ronde permet de le qualifier de "jeton ".The present invention relates to an electronic telephone device. Its generally flat and ordinarily round shape allows to qualify it as a "token".

L'invention trouve une application particulière dans les systèmes de paiement de services par téléphone, comme par exemple dans le système faisant l'objet d'une demande de brevet déposée par Alain BERNARD le jour du dépôt de la présente demande et intitulée "Système de paiement de services par téléphone".The invention finds a particular application in payment systems for telephone services, such as in the system which is the subject of a patent application filed by Alain BERNARD on the day of filing of this application and entitled "System of payment for services by telephone ".

On connaît des modems à coupleur acoustique capables d'émettre des sons grâce à un petit haut parleur. Celui-ci, approché du microphone d'un combiné téléphonique, permet la transmission de ces sons sur le réseau téléphonique. Un autre modem, situé à l'autre extrémité de la liaison, interprète les données qu'il reçoit et établit une connexion, par exemple avec un ordinateur.Acoustic coupler modems are known which are capable of emitting sounds through a small speaker. This, approached the microphone of a telephone handset, allows the transmission of these sounds over the telephone network. Another modem, located at the other end of the link, interprets the data it receives and establishes a connection, for example with a computer.

Le CCITT (Comité Consultatif International Télégraphique et Téléphonique) ayant défini, dans son avis Q23, un ensemble de tonalités correspondant aux douze chiffres et signes du clavier téléphonique, il est possible de transmettre ces chiffres et signes à l'aide de tels modems.The CCITT (International Telegraph and Telephone Consultative Committee) having defined, in its opinion Q23, a set of tones corresponding to the twelve digits and signs of the telephone keypad, it is possible to transmit these figures and signs using such modems.

Il existe ainsi de nombreux modèles de boîtiers ressemblant à des calculatrices de poche, qui permettent de stocker des numéros de téléphone et de les émettre sur le réseau téléphonique.There are thus numerous models of cases resembling pocket calculators, which make it possible to store telephone numbers and to transmit them over the telephone network.

Dans un autre domaine, sont également connus des dispositifs chiffrants, qui permettent d'ajouter à un signal numérique une suite de données pseudo-aléatoires évoluant au cours du temps, de façon à ce que le signal numérique initial ne puisse être trouvé qu'avec une connaissance de la suite de données et de son évolution dans le temps.In another field, encryption devices are also known, which make it possible to add to a digital signal a series of pseudo-random data evolving over time, so that the initial digital signal can only be found with knowledge of the data sequence and its evolution over time.

Enfin, l'identification d'une personne appelant un ordinateur relié au réseau téléphonique se fait couramment en demandant à cette personne de taper sur un clavier un numéro de code.Finally, the identification of a person calling a computer connected to the telephone network is commonly done by asking this person to type on a keyboard a code number.

A titre d'exemple de cet art antérieur, on peut citer le document US-A-4,601,011 qui décrit un dispositif comprenant des moyens aptes à former un message numérique, lorsqu'un code confidentiel correct a été tapé sur un clavier. Ce message change dans le temps grâce à un compteur dont le contenu est incrémenté à chaque utilisation. Ce contenu détermine en partie le message numérique envoyé sur la ligne téléphonique.By way of example of this prior art, mention may be made of document US-A-4,601,011 which describes a device comprising means capable of forming a digital message, when a correct confidential code has been typed on a keyboard. This message changes over time thanks to a counter whose content is incremented with each use. This content partly determines the digital message sent over the telephone line.

Bien que donnant satisfaction à certains égards, l'identification d'une personne par un numéro de code présente des inconvénients car le code peut être volé. Les autres dispositifs sont complexes et encombrants, en particulier parce qu'ils nécessitent un clavier. Dans le meilleur des cas, l'encombrement se réduit au format d'une calculette. Par ailleurs, ils sont inaptes à définir une durée de validité, ou, si l'on veut, une date de péremption.Although it is satisfactory in certain respects, identifying a person by a code number has drawbacks because the code can be stolen. The other devices are complex and bulky, in particular because they require a keyboard. In the best of cases, the space is reduced to the size of a calculator. Furthermore, they are unable to define a period of validity, or, if you like, an expiration date.

La présente invention a justement pour but de remédier à ces inconvénients. A cette fin, elle propose un dispositif très simple de structure et d'emploi, sans clavier, émettant un message numérique évoluant dans le temps, ce dispositif étant susceptible de déterminer lui-même l'instant où il se trouve périmé pour se mettre définitivement hors service.The object of the present invention is precisely to remedy these drawbacks. To this end, it offers a very simple device of structure and use, without keyboard, emitting a digital message evolving over time, this device being capable of determining itself the instant when it is out of date in order to put itself definitively out of order.

De façon précise, la présente invention a pour objet un dispositif électronique pour système téléphonique, comprenant :

  • un émetteur acoustique ;
  • un générateur de commande de l'émetteur acoustique, apte à engendrer des tonalités tombant dans la bande téléphonique ;
ce dispositif étant caractérisé par le fait qu'il comprend en outre :
  • a) un moyen apte à former un message numérique formé d'une suite de nombres changeant à chaque utilisation du dispositif, ce moyen étant apte également à déterminer un instant de péremption, ce moyen comprenant :
  • une mémoire contenant un premier code d'identification et un second code ou clé de service liée au systéme téléphonique dans lequel le dispositif est utilisé ;
  • un circuit électronique et logique relié à la mémoire et délivrant le message commandant le générateur, ce message dépendant du premier et du second codes, chaque nombre du message commandant le générateur pour l'émission d'une tonalité particulière par l'émetteur acoustique, l'émetteur acoustique émettant ainsi une séquence de tonalités ;
  • b) une pile apte à alimenter le moyen apte à former le message ;
  • c) un interrupteur commandé manuellement apte à mettre en service le générateur pour produire l'émission de la séquence de tonalités.
Specifically, the present invention relates to an electronic device for a telephone system, comprising:
  • an acoustic transmitter;
  • an acoustic transmitter control generator, capable of generating tones falling into the telephone band;
this device being characterized by the fact that it further comprises:
  • a) a means capable of forming a digital message formed of a series of numbers changing with each use of the device, this means also being capable of determining an expiration instant, this means comprising:
  • a memory containing a first identification code and a second code or service key linked to the telephone system in which the device is used;
  • an electronic and logic circuit connected to the memory and delivering the message controlling the generator, this message depending on the first and second codes, each number of the message controlling the generator for the emission of a particular tone by the acoustic transmitter, l acoustic transmitter thus emitting a sequence of tones;
  • b) a battery capable of supplying the means capable of forming the message;
  • c) a manually controlled switch capable of commissioning the generator to produce the emission of the sequence of tones.

Selon un premier mode de réalisation, le dispositif est caractérisé par le fait que le moyen comprend une horloge donnant la date et déterminant l'instant de péremption du dispositif, le message dépendant ainsi des premier et second codes et de la date indiquée par l'horloge.According to a first embodiment, the device is characterized in that the means comprises a clock giving the date and determining the expiration time of the device, the message thus depending on the first and second codes and on the date indicated by the clock.

Selon un second mode de réalisation, le dispositif est caractérisé par le fait que le moyen comprend un compteur dont le contenu est incrémenté à chaque utilisation, le message dépendant ainsi des premier et second codes et du contenu du compteur.According to a second embodiment, the device is characterized in that the means comprises a counter whose content is incremented with each use, the message thus depending on the first and second codes and on the content of the counter.

De préférence, l'ensemble des moyens composant le dispositif de l'invention est scellé dans un bloc de matière solide, présentant la forme d'un jeton. L'interrupteur est disposé sur l'une des faces du jeton et le haut-parleur sur l'autre.Preferably, all of the means making up the device of the invention are sealed in a block of solid material, having the shape of a token. The switch is located on one side of the token and the speaker on the other.

Le matériau utilisé pour constituer le bloc est de préférence une résine ou de la matière plastique.The material used to constitute the block is preferably a resin or plastic.

Lorsque le dispositif comprend une horloge, toutes les horloges des différents jetons sont synchronisées et mises à l'heure lors de la fabrication du jeton par rapport à une horloge de référence.When the device includes a clock, all the clocks of the different tokens are synchronized and set to the time during the manufacture of the token relative to a reference clock.

De toute façon, les caractéristiques et avantages de l'invention apparaîtront mieux à la lumière de la description qui va suivre. Cette description porte sur un exemple de réalisation donné à titre explicatif et nullement limitatif et elle se réfère à des dessins sur lesquels :

  • la figure 1 représente un schéma électronique du dispositif,
  • la figure 2 montre l'allure générale du jeton.
In any case, the characteristics and advantages of the invention will appear better in the light of the description which follows. This description relates to an exemplary embodiment given by way of explanation and in no way limiting, and it refers to drawings in which:
  • FIG. 1 represents an electronic diagram of the device,
  • Figure 2 shows the general appearance of the token.

Tel que représenté sur la figure 1, le dispositif J comprend : un émetteur acoustique 10 commandé par un générateur 12 (qui peut être, par exemple, un modem 300 bauds ou un générateur de tonalités multifréquences selon la norme Q23), une mémoire 14, qui sera de préférence une mémoire vive, perdant son contenu en cas d'arrêt de l'alimentation, un circuit électronique et logique 16 relié à la mémoire 14 et commandant le circuit 12. Dans la variante illustrée, le dispositif comprend encore une horloge 20 donnant la date H (par exemple en minutes), et une pile 22 alimentant en permanence l'horloge 20 et la mémoire 14 mais n'alimentant le générateur 12 que si un interrupteur 24 a été fermé par l'effet d'un moyen tel qu'un bouton poussoir 26 (ou tout autre moyen équivalent).As shown in FIG. 1, the device J comprises: an acoustic transmitter 10 controlled by a generator 12 (which can be, for example, a 300 baud modem or a multifrequency tone generator according to the Q23 standard), a memory 14, which will preferably be a random access memory, losing its content in the event of power supply shutdown, an electronic and logic circuit 16 connected to memory 14 and controlling the circuit 12. In the variant illustrated, the device also includes a clock 20 giving the date H (for example in minutes), and a battery 22 permanently supplying the clock 20 and the memory 14 but supplying the generator 12 only if a switch 24 has been closed by the effect of a means such than a push button 26 (or any other equivalent means).

L'horloge 20 est un circuit qui, d'une part, donne le temps écoulé, compté par exemple en minutes depuis la date d'origine du dispositif et, d'autre part, détermine le temps restant à courir jusqu'à la date de péremption. L'horloge 20 peut être constituée par une base de temps reliée, d'une part, à un compteur de minutes, le contenu H de ce compteur apparaissant sur une sortie 21, et relié, d'autre part, à un décompteur de minutes, le passage à zéro de ce décompteur se traduisant par l'apparition d'un signal de remise à zéro RAZ sur une sortie 23.The clock 20 is a circuit which, on the one hand, gives the elapsed time, counted for example in minutes from the original date of the device and, on the other hand, determines the time remaining to run until the date of expiration. The clock 20 can be constituted by a time base connected, on the one hand, to a minute counter, the content H of this counter appearing on an output 21, and connected, on the other hand, to a minute counter , the zero crossing of this down counter resulting in the appearance of a reset reset signal on an output 23.

D'autres modes de réalisation sont possibles et à la portée de l'homme du métier comme par exemple des dispositifs à compteur dont le compteur est incrémenté. L'essentiel est d'obtenir une information (date ou nombre d'utilisations) permettant de repérer l'instant de péremption et de modifier la séquence émise.Other embodiments are possible and within the reach of those skilled in the art such as for example counter devices whose counter is incremented. The main thing is to obtain information (date or number of uses) to identify the expiration time and modify the sequence issued.

Avec une horloge et à titre d'exemple, si la date est repérée en minutes, une période de 10 ans représente 5 256 000 minutes ce qui nécessite 7 chiffres (de 0 à 9). La durée de vie d'un jeton peut être de 6 mois, soit 262 800 minutes.With a clock and for example, if the date is marked in minutes, a period of 10 years represents 5,256,000 minutes which requires 7 digits (from 0 to 9). The lifetime of a token can be 6 months, or 262,800 minutes.

La mémoire 14 contient un premier code qui est un code d'identification du jeton. Il s'agit d'un nombre N introduit lors de la fabrication du jeton par logiciel ou par masquage d'un circuit intégré ou par programmation. La mémoire 14 contient également un second code ou clé C, qui est propre au système téléphonique global dans lequel le jeton est utilisé. Naturellement, la mémoire 14 peut être constituée de deux mémoires indépendantes, l'une stockant le premier code, l'autre le second.The memory 14 contains a first code which is a code for identifying the token. It is a number N introduced during the manufacture of the token by software or by masking of an integrated circuit or by programming. The memory 14 also contains a second code or key C, which is specific to the global telephone system in which the token is used. Naturally, the memory 14 can be made up of two independent memories, one storing the first code, the other the second.

Le circuit électronique et logique 16 dispose ainsi de la date H délivrée par l'horloge 20, du code d'identification N et de la clé C propre au système global. Le circuit 16 engendre alors un message numérique M qui est une fonction de H, N et C. L'homme du métier connaît des algorithmes de formation de tels messages. Le document US-A-4,601,011 déjà cité et les références bibliographiques qu'il contient décrivent des moyens capables de mettre en oeuvre de tels algorithmes et, à l'autre extrémité de la ligne, des moyens capables de dérouler des algorithmes inverses. Il n'est donc pas nécessaire d'entrer dans le détail de ces circuits.The electronic and logic circuit 16 thus has the date H delivered by the clock 20, the identification code N and the key C specific to the global system. Circuit 16 then generates a digital message M which is a function of H, N and C. Those skilled in the art know algorithms for forming such messages. The document US-A-4,601,011 already cited and the bibliographical references which it contains describe means capable of implementing such algorithms and, at the other end of the line, means capable of carrying out reverse algorithms. It is therefore not necessary to go into the details of these circuits.

Il suffit d'indiquer, à titre d'exemple, que le nombre N peut comporter 8 chiffres (de 0 à 9), ce qui représente 100 millions de jetons possibles ; la clé C peut en comporter également 8 ; on peut employer en outre 4 chiffres de contrôle (par exemple la somme de chacun des nombres H, N et C et la somme de l'ensemble). On obtient ainsi un message de 7+8+8+4=27 chiffres. Convertis selon la norme Q23, ces 27 chiffres seront émis en environ 2,7 s.It suffices to indicate, by way of example, that the number N can comprise 8 digits (from 0 to 9), which represents 100 million possible tokens; key C can also include 8; you can also use 4 check digits (for example the sum of each of the numbers H, N and C and the sum of the set). This produces a message of 7 + 8 + 8 + 4 = 27 digits. Converted according to the Q23 standard, these 27 digits will be transmitted in approximately 2.7 s.

A titre d'exemple simple, la séquence constituant le message peut donc être : 7 chiffres pour la date H, 1 chiffre de contrôle pour la somme à 9 des 7 chiffres précédents, 8 chiffres pour la clé C, 1 chiffre de contrôle pour la somme à 9 des 8 chiffres précédents, 8 chiffres pour le numéro N, 1 chiffre de contrôle pour la somme à 9 des 8 chiffres précédents et 1 chiffre pour la somme à 9 des trois chiffres de contrôle.As a simple example, the sequence constituting the message can therefore be: 7 digits for the date H, 1 check digit for the sum of 9 of the previous 7 digits, 8 digits for the C key, 1 check digit for the sum at 9 of the previous 8 digits, 8 digits for the number N, 1 check digit for the sum at 9 of the previous 8 digits and 1 digit for the sum at 9 of the three check digits.

Naturellement, des séquences beaucoup plus complexes peuvent être formées, à l'aide de tous les algorithmes de cryptage connus, sans sortir pour autant du cadre de l'invention.Naturally, much more complex sequences can be formed, using all the known encryption algorithms, without thereby departing from the scope of the invention.

Lorsque le message M est formé, le générateur 12 commande en conséquence le haut-parleur 10, lequel émet une séquence SQ formée d'une suite de tonalités.When the message M is formed, the generator 12 consequently controls the loudspeaker 10, which emits a sequence SQ formed of a series of tones.

Lorsque l'horloge 20 détecte l'instant de péremption, le signal de remise à zéro RAZ met hors fonctionnement la mémoire 14 et/ou le circuit 16. Le jeton est alors hors service.When the clock 20 detects the expiration instant, the reset reset signal deactivates the memory 14 and / or the circuit 16. The token is then out of service.

La plupart des circuits (horloge, mémoire, circuit logique) qui sont représentés séparés les uns des autres sur le dessin annexé -et cela pour plus de clarté- peuvent être intégrés dans un seul et même circuit. De même, les fonctions remplies par ces circuits peuvent être obtenues par programmation d'un circuit plus performant tel qu'un microprocesseur ou un contrôleur.Most of the circuits (clock, memory, logic circuit) which are shown separated from each other in the accompanying drawing - and this for clarity - can be integrated into a single circuit. Likewise, the functions performed by these circuits can be obtained by programming a more efficient circuit such as a microprocessor or a controller.

En pratique, l'ensemble des moyens représentés peut être moulé dans une résine ou une matière plastique pour présenter l'aspect d'un jeton. Le bouton poussoir apparaît alors sur l'une des faces du jeton, l'émetteur acoustique étant disposé sur l'autre. En fonctionnement, le jeton J se plaque sur le microphone 40 d'un combiné téléphonique.In practice, all of the means shown can be molded in a resin or a plastic material to present the appearance of a token. The push button then appears on one of the faces of the token, the acoustic transmitter being arranged on the other. In operation, the token J is placed on the microphone 40 of a telephone handset.

La figure 2 montre l'allure générale du jeton J de l'invention, vue par la face avant où est disposé le haut-parleur 10 émettant la séquence sonore SQ (la face arrière, cachée, correspond au bouton poussoir).FIG. 2 shows the general appearance of the token J of the invention, seen from the front face where the loudspeaker 10 emitting the sound sequence SQ is arranged (the rear face, hidden, corresponds to the push button).

Claims (6)

Dispositif électronique pour système téléphonique, comprenant : - un émetteur acoustique (10) ; - un générateur (12) de commande de l'émetteur acoustique, apte à engendrer des tonalités (SQ) tombant dans la bande téléphonique ; ce dispositif étant caractérisé par le fait qu'il comprend en outre : a) un moyen (34) apte à former un message numérique (M) formé d'une suite de nombres changeant à chaque utilisation du dispositif, ce moyen (34) étant apte également à déterminer un instant de péremption, ce moyen comprenant : - une mémoire (14) contenant un premier code d'identification (N) et un second code ou clé de service (C) liée au système téléphonique dans lequel le dispositif est utilisé ; - un circuit électronique et logique (16) relié à la mémoire (14) et délivrant le message (M) commandant le générateur (12), ce message dépendant du premier et du second codes, chaque nombre du message commandant le générateur (12) pour l'émission d'une tonalité particulière par l'émetteur acoustique (10), l'émetteur acoustique émettant ainsi une séquence (SQ) de tonalités ; b) une pile (22) apte à alimenter le moyen (34) apte à former le message ; c) un interrupteur (24) commandé manuellement apte à mettre en service le générateur (12) pour produire l'émission de la séquence de tonalités (SQ). Electronic device for telephone system, comprising: - an acoustic transmitter (10); - a generator (12) for controlling the acoustic transmitter, capable of generating tones (SQ) falling into the telephone band; this device being characterized by the fact that it further comprises: a) a means (34) capable of forming a digital message (M) formed of a series of numbers changing with each use of the device, this means (34) also being capable of determining an expiration time, this means comprising: - a memory (14) containing a first identification code (N) and a second code or service key (C) linked to the telephone system in which the device is used; - an electronic and logic circuit (16) connected to the memory (14) and delivering the message (M) controlling the generator (12), this message depending on the first and second codes, each number of the message controlling the generator (12) for the emission of a particular tone by the acoustic transmitter (10), the acoustic transmitter thus transmitting a sequence (SQ) of tones; b) a battery (22) capable of supplying the means (34) capable of forming the message; c) a manually controlled switch (24) capable of commissioning the generator (12) to produce the emission of the tone sequence (SQ). Dispositif selon la revendication 1, caractérisé par le fait que le moyen (34) comprend une horloge (20) donnant la date (H) et déterminant l'instant de péremption du dispositif, le message (M) dépendant ainsi des premier et second codes et de la date (H) indiquée par l'horloge (20).Device according to claim 1, characterized in that the means (34) comprises a clock (20) giving the date (H) and determining the expiration time of the device, the message (M) thus depending on the first and second codes and the date (H) indicated by the clock (20). Dispositif selon la revendication 1, caractérisé par le fait que le moyen (34) comprend un compteur dont le contenu est incrémenté à chaque utilisation, le message (M) dépendant ainsi des premier et second codes et du contenu du compteur.Device according to claim 1, characterized in that the means (34) comprises a counter whose content is incremented with each use, the message (M) thus depending on the first and second codes and on the content of the counter. Dispositif selon la revendication 1, caractérisé par le fait que l'ensemble des moyens qui le composent est scellé dans un bloc de matière solide, présentant la forme d'un jeton.Device according to claim 1, characterized in that all of the means which compose it are sealed in a block of solid material, having the shape of a token. Dispositif selon la revendication 4, caractérisé par le fait que le bloc est en résine ou en plastique.Device according to claim 4, characterized in that the block is made of resin or plastic. Dispositif selon la revendication 1, caractérisé par le fait que les tonalités émises par le générateur sont du type multifréquence.Device according to claim 1, characterized in that the tones emitted by the generator are of the multifrequency type.
EP91400915A 1990-04-05 1991-04-04 Telephonic electronic device Expired - Lifetime EP0451056B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9004367A FR2660776B1 (en) 1990-04-05 1990-04-05 ELECTRONIC TELEPHONE DEVICE.
FR9004367 1990-04-05

Publications (2)

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EP0451056A1 true EP0451056A1 (en) 1991-10-09
EP0451056B1 EP0451056B1 (en) 1995-03-01

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ID=9395471

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Application Number Title Priority Date Filing Date
EP91400915A Expired - Lifetime EP0451056B1 (en) 1990-04-05 1991-04-04 Telephonic electronic device

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US (1) US5182767A (en)
EP (1) EP0451056B1 (en)
JP (1) JP3009751B2 (en)
AT (1) ATE119303T1 (en)
DE (1) DE69107652T2 (en)
DK (1) DK0451056T3 (en)
ES (1) ES2071247T3 (en)
FR (1) FR2660776B1 (en)

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US5442341A (en) * 1992-04-10 1995-08-15 Trw Inc. Remote control security system
US5604488A (en) * 1992-04-10 1997-02-18 Trw Inc. Remote control security system
FR2752963A1 (en) * 1996-09-02 1998-03-06 Goreta Lucas Remote portable authentication device

Also Published As

Publication number Publication date
DE69107652T2 (en) 1995-09-28
FR2660776A1 (en) 1991-10-11
ES2071247T3 (en) 1995-06-16
DE69107652D1 (en) 1995-04-06
ATE119303T1 (en) 1995-03-15
DK0451056T3 (en) 1995-07-10
EP0451056B1 (en) 1995-03-01
FR2660776B1 (en) 1994-06-17
JPH0670048A (en) 1994-03-11
JP3009751B2 (en) 2000-02-14
US5182767A (en) 1993-01-26

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