WO1997034249A1 - Device for contactless data exchange with an electronic ticket - Google Patents

Device for contactless data exchange with an electronic ticket Download PDF

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Publication number
WO1997034249A1
WO1997034249A1 PCT/FR1997/000429 FR9700429W WO9734249A1 WO 1997034249 A1 WO1997034249 A1 WO 1997034249A1 FR 9700429 W FR9700429 W FR 9700429W WO 9734249 A1 WO9734249 A1 WO 9734249A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
ticket
coils
card
guide system
Prior art date
Application number
PCT/FR1997/000429
Other languages
French (fr)
Inventor
Michel Leduc
Richard Kalinowski
Philippe Martin
Original Assignee
Gemplus S.C.A.
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 Gemplus S.C.A. filed Critical Gemplus S.C.A.
Publication of WO1997034249A1 publication Critical patent/WO1997034249A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10336—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Definitions

  • the invention relates to a contactless information exchange device with an electronic ticket.
  • This device is intended to be used in particular in teleticketing operations. These operations are carried out thanks to a remote electromagnetic coupling between the electronics of the ticket and a reader.
  • the coupling can be carried out in read mode or in read / write mode.
  • contactless information exchange devices associated with readers, include a flat and rigid transmit / receive antenna. It is then necessary to present an electronic ticket near this antenna and well opposite so as to be able to exchange information with the device.
  • the electronic tickets used are generally smart cards without flush contact, also having a transmit / receive antenna connected to the chip.
  • a first mode of operation consists in exerting a light pressure on a contactor connected to the transmit / receive antenna of the device. This makes it possible to establish contact and therefore to trigger the information exchange process.
  • the distance between the device and the ticket must necessarily be relatively short, that is to say of the order of 3 to 5 cm.
  • the device operates identically to the first operating mode, but does not contain a contactor. Consequently, in this case the constraint consisting in establishing a contact, with a view to triggering the information exchange process, is removed.
  • the reading device is permanently in "standby" mode and the information exchange process does not start until the electronic ticket is approached. In this case, the distance between the device and the ticket is between 3 and 10 cm.
  • this operating mode requires a relatively large energy consumption.
  • the electronic ticket In all cases, the electronic ticket must be presented well in front of the flat antenna, so as to optimize the exchange of information.
  • the electronic tickets used which are in particular smart cards without flush contact, are also provided with a transmit / receive antenna.
  • This antenna generally has large dimensions and occupies an area extending from half to the entire surface of a ticket.
  • These tickets are then approached from the flat antennas contained in the information exchange devices, in order to be able to carry out teleticketing operations.
  • such electronic tickets with large antennas remain relatively expensive.
  • the antenna of the electronic ticket, or of the contactless smart card is reduced to very small dimensions, the reliability of the information exchange process is then also greatly reduced. Indeed, it may be that a user of the card has, vis-à-vis the flat and rigid antenna of the information exchange device, an area of the card not comprising an antenna. In this case, no transmission / reception, ie no transmission of information, can take place.
  • the present invention has made it possible to solve this problem since it provides a contactless information exchange device with a contactless electronic ticket, comprising for this a transmitting / receiving antenna, characterized in that it also comprises a guidance system to allow the passage of the ticket, and in that its transmit / receive antenna extends on each side of the guidance system.
  • the device according to the invention also makes it possible, during the passage of the ticket, to read and / or write information whatever the position of the ticket relative to the transmit / receive antenna of this device. .
  • the realization of such a device does not generate any additional cost compared to the manufacture of a flat and rigid antenna of substantially larger size like those used to date.
  • FIGS. 3A, 3B and 3C respectively a top view, an exploded view and a partial section view of a transmit / receive antenna associated with the device of FIG. 2,
  • FIG. 4A and 4B a diagram of another embodiment of a device according to the invention and its associated transmit / receive antenna.
  • the present invention relates to a device for exchanging information with an electronic ticket.
  • This electronic ticket can come in different forms.
  • the device according to the invention is also connected to a coupler which is itself associated with a reader capable of interpreting the data exchanged.
  • the device comprises a guidance system designated by the reference 10 in Figure 1.
  • This device further comprises a transmitting antenna / reception 20 which extends on each side of the guidance system 10.
  • This antenna 20 makes it possible to induce an electromagnetic field inside the guidance system.
  • This electromagnetic field is used to communicate with the chip of a contactless smart card 60, via a transmit / receive antenna connected to this chip and not shown in FIG. 1.
  • a user can then pass his contactless smart card 60, in the guidance system 10, in order to trigger the information exchange process.
  • the passage of the card 60 in the guide system 10 takes place as naturally as if the card were presented 10 cm from the device.
  • two contactless smart cards 60 are shown. One is placed horizontally, i.e. in such a way that its longitudinal side is parallel to the longitudinal axis of the guide system, while the other card is placed vertically, i.e. in such a way that its longitudinal side is perpendicular to the longitudinal axis of the guide system 10.
  • They each include an electronic module 61 containing a small transmission / reception antenna and an associated chip, for example as described in patent application FR No. 94 02130. This electronic module can be located at any location in the cards 60. In FIG. 1, the modules 61 have been shown in the center of each card 60.
  • the dimensions of the guidance system 10 are such that its length and its height are greater than the length of the cards 60 to allow the initiation of the information exchange process regardless of the position of these cards, that is to say say that they are oriented vertically or horizontally.
  • the length of the guide system 10 is two to ten times greater than the length of a card 60.
  • a user is always certain that the electronic module 61 of his card 60, and more particularly the associated antenna, is fully immersed in the electromagnetic field created inside the guidance system during the passage of the card. Consequently, the device according to the invention makes it possible to present a card 60 in any direction, without being concerned with the orientation of the electronic module 61 relative to the antenna 20 of the guidance system 10.
  • the section of the guide 10 is preferably V-shaped.
  • the width is measured in its upper part and is such that it allows the passage of at least one card 60 as well as the hand of a user holding this card, and possibly a card holder in order to be able to exchange information even when the card 60 has remained inserted in this card holder.
  • the section of the guide 10 can be U-shaped.
  • the guide system is made of a rigid plastic material. It can also rest on a base 11 as shown in Figure 1. In this case, its attachment to the base can be done by gluing or by screwing for example.
  • the device can also be integrated into a reading terminal for example.
  • Figure 2 shows the device of Figure 1 in a little more detail.
  • the transmit / receive antenna 20 associated with the device is in fact split and comprises two elements 21, 22 placed opposite and on either side of the guidance system 10. These two elements are for example two coils 21 and 22 in series each having at least one turn. These two coils are intended to be connected to a coupler which is itself associated with a reader capable of interpreting the data exchanged.
  • this antenna 20 is produced on a film 30 of flexible plastic material. It is also arranged outside of the guide system 10 so as to prevent the cards from damaging it during their successive passages.
  • An alternative embodiment consists in protecting this antenna 20 against possible external shocks by covering it with a second plastic material matching, for example, the shape of the guide system 10.
  • FIGS. 3A, 3B and 3C respectively represent a top view, an exploded view and a view in partial section of the antenna.
  • this antenna 20 is produced on a flexible support 30 made of plastic material, marketed for example under the brand "Kapton".
  • the two coils 21 and 22 are produced by etching, in the form of circular tracks, a metal sheet, such as a copper sheet for example, previously deposited or glued to the plastic support 30. These two coils 21, 22 are respectively connected to the positive and negative poles 28 of a coupler.
  • An alternative embodiment consists in producing coils in any other form, such as rectangular shapes for example.
  • Shielding 23 also makes it possible not only to avoid any parasitic radiation towards the outside, but also to protect the two coils 21, 22 against waves coming from the outside.
  • This shielding is also carried out by etching a copper sheet. It comprises an upper layer 23A and a lower layer 23B arranged on either side of the coils 21 and 22 as shown in Figures 3B and 3C. These two lower and upper layers are connected to each other by metallized wells 24, dug in the thickness of the support 30 and distributed over the entire periphery of this shielding 23. These wells are for example made of copper.
  • an air gap 25A, 25B is made in the shielding of each coil so as to allow operation as a magnetic antenna.
  • the two coils 21, 22 are also electrically connected by means of a metal bushing 26 at the ends of which are provided metallized wells 27, made of copper for example.
  • This antenna 20 is then folded along the folding axis 29, passing through the center of the connection bushing 26, as shown in FIG. 3A.
  • a first layer 1, which can also be called double-sided circuit 1 comprises, on the upper face of its support 31 in Kapton, the two coils 21, 22 obtained by etching a sheet of copper, and on the face lower of the same support 31, the lower shield 23B also obtained by etching a copper sheet.
  • the lower shield 23B being on the underside of the support 31, it is shown in dotted lines in FIG. 3B.
  • a second layer also called single-sided circuit 2
  • the upper shield 23A obtained by etching a copper foil previously deposited or glued to the support.
  • the metallic connection bushing 26 for connecting the two coils 21, 22 is also produced on the upper face of this single-sided circuit 2.
  • the lower 23B and upper 23A layers of the shield 23 are electrically connected to one another by means of metal wells 24 dug in the layers of the two circuits 1 and 2.
  • metal wells 24 is shown diagrammatically by a vertical line 24 in FIG. 3B.
  • These wells are made of a material such as copper for example.
  • Two vertical lines 27 shown in this FIG. 3B also make it possible to diagram the wells connected to the ends of the metal bushing 26 of the single-sided circuit 2 in order to connect the two coils 21 and 22.
  • these wells 27 are also made of copper.
  • Metallizations 28 also represented by two vertical lines in FIG. 3B, are intended to connect each coil 21, 22 to a screened cable able to connect to a coupler.
  • the two circuits 1 and 2 are assembled by gluing, for example.
  • FIG. 3C represents a diagram in partial section along section AA of FIG. 3A.
  • This section again identifies the turns of the coil 21, the upper 23A and lower 23B shielding layers linked together by wells 24 dug in the thickness of the antenna, and a well 27 for connecting the coil 21 at the metal bushing 26 not visible in this figure 3C.
  • Layer 3 represents a layer of adhesive, for example intended to assemble the two single and double-sided circuits.
  • the total thickness of the antenna thus produced is between 1 and 5mm.
  • the coils 21 and 22 can for example be in an oblong shape, so as to create a uniform electromagnetic field all along the guide system 10.
  • FIGS. 4A and 4B Another embodiment of the transmit / receive antenna of the device according to the invention is illustrated in FIGS. 4A and 4B.
  • This antenna comprises a magnetic core 40 having an air gap 41 in which the guide system 10 is housed.
  • a coil 45 connected respectively to the positive and negative poles of a coupler, surrounds an area of this magnetic core 40. This coil allows to induce an electromagnetic field which is then concentrated and channeled, by the magnetic core 40, in the air gap 41 corresponding to the passage area of the contactless smart card.
  • the magnetic core 40 is made of a ferrite material. It is for example constituted by an assembly of two elements 40A and 40B in the form of U with asymmetrical branches, as illustrated in FIG. 4B. The assembly can for example be carried out by gluing. This assembly causes, at the interface between the two elements 40A and 40B, the creation of a parasitic air gap 44 through which leaks are liable to spread.
  • the coil 45 can be located at any location on the magnetic core 40. However, it is preferable to produce it around the parasitic air gap 44 in order to mask it and thus avoid any possible production of disturbances to the outside.
  • the magnetic core 40 transforms the antenna formed in the guidance system 10, according to the first embodiment, into an antenna concentrating all the energy emitted in the air gap 41.
  • the U-shaped section of the two ferrite elements 40A and 40B can be either square or rounded.
  • the length of these two elements can be adapted to that of the guidance system 10. In this case, a uniform electromagnetic field is created inside the guidance system.
  • the concentration of the field flux induced by the magnetic core makes it possible to obtain an identical result with a much lower power, emitted by the reader.
  • the transmit / receive antenna 20 can be assimilated to a sinusoid which is split so as to extend on each side of the guide system 10. Consequently, it comprises two sinusoidal elements which form a single coil.
  • This advantage is considerable because compared to the prior art, a single coil is used, the technical and economic advantage being very enviable. The difficulties of production, cost, yield and lack of uniformity of performance are overcome by the use of a single split coil.

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Abstract

A device for contactless data exchange with an electronic ticket is disclosed. For this purpose, the device comprises a transmit-receive antenna (20) and enables data exchange with an electronic ticket (60) regardless of the position of the ticket relative to the antenna. Said device comprises a guide system (10) for feeding the ticket (60), and the transmit-receive antenna (20) extends on either side of the guide system (10). The device is particularly useful for remote ticketing.

Description

DISPOSITIF D'ÉCHANGE D'INFORMATIONS SANS CONTACT AVEC NON-CONTACT INFORMATION EXCHANGE DEVICE
UN TICKET ÉLECTRONIQUEELECTRONIC TICKET
L'invention concerne un dispositif d'échange d'informations sans contact avec un ticket électronique. Ce dispositif est destiné à être utilisé notamment dans des opérations de télébillétique. Ces opérations s'effectuent grâce à un couplage électromagnétique à distance entre l'électronique du ticket et un lecteur. Le couplage peut être réalisé en mode lecture ou en mode lecture/écriture.The invention relates to a contactless information exchange device with an electronic ticket. This device is intended to be used in particular in teleticketing operations. These operations are carried out thanks to a remote electromagnetic coupling between the electronics of the ticket and a reader. The coupling can be carried out in read mode or in read / write mode.
Tels qu'ils sont réalisés actuellement, les dispositifs d'échange d'informations sans contact, associés à des lecteurs, comportent une antenne d'émission/réception plate et rigide. Il est alors nécessaire de présenter un ticket électronique à proximité de cette antenne et bien en face de manière à pouvoir échanger des informations avec le dispositif. Les tickets électroniques utilisés sont en général des cartes à puce sans contact affleurant, possédant elles aussi une antenne d'émission/réception reliée à la puce.As they are currently produced, contactless information exchange devices, associated with readers, include a flat and rigid transmit / receive antenna. It is then necessary to present an electronic ticket near this antenna and well opposite so as to be able to exchange information with the device. The electronic tickets used are generally smart cards without flush contact, also having a transmit / receive antenna connected to the chip.
Il existe aujourd'hui plusieurs types de dispositifs d'échange d'informations. Selon leur type, ces dispositifs peuvent fonctionner de différentes manières : a - Un premier mode de fonctionnement consiste à exercer une légère pression sur un contacteur relié à l'antenne d'émission/réception du dispositif. Ceci permet d'établir un contact et par conséquent de déclencher le processus d'échange d'informations. Dans ce cas, la distance entre le dispositif et le ticket doit nécessairement être relativement courte, c'est à dire de l'ordre de 3 à 5 cm. b - Dans une autre version, le dispositif fonctionne de manière identique au premier mode de fonctionnement, mais ne renferme pas de contacteur. Par conséquent, dans ce cas la contrainte consistant à établir un contact, en vue de déclencher le processus d'échange d'informations, est supprimée. Le dispositif de lecture se trouve en permanence en mode "veille" et le processus d'échange d'informations ne se déclenche qu'à l'approche du ticket électronique. Dans ce cas, la distance entre le dispositif et le ticket est comprise entre 3 et 10 cm. Cependant, ce mode de fonctionnement impose une consommation d'énergie relativement importante.Several types of information exchange devices exist today. Depending on their type, these devices can operate in different ways: a - A first mode of operation consists in exerting a light pressure on a contactor connected to the transmit / receive antenna of the device. This makes it possible to establish contact and therefore to trigger the information exchange process. In this case, the distance between the device and the ticket must necessarily be relatively short, that is to say of the order of 3 to 5 cm. b - In another version, the device operates identically to the first operating mode, but does not contain a contactor. Consequently, in this case the constraint consisting in establishing a contact, with a view to triggering the information exchange process, is removed. The reading device is permanently in "standby" mode and the information exchange process does not start until the electronic ticket is approached. In this case, the distance between the device and the ticket is between 3 and 10 cm. However, this operating mode requires a relatively large energy consumption.
Dans tous les cas, le ticket électronique doit être présenté bien en face de l'antenne plate, de manière à optimiser les échanges d'informations. Le positionnement du ticket, par rapport à l'antenne d'émission/réception des dispositifs actuels d'échange d'informations sans contact, joue par conséquent un rôle prépondérant et affecte la qualité de la transmission de données.In all cases, the electronic ticket must be presented well in front of the flat antenna, so as to optimize the exchange of information. The positioning of the ticket, with respect to the transmit / receive antenna of current contactless information exchange devices, therefore plays a major role and affects the quality of data transmission.
De plus, les tickets électroniques utilisés, qui sont notamment des cartes à puce sans contact affleurant, sont eux-aussi pourvus d'une antenne d'émission/réception . Cette antenne présente en général de grandes dimensions et occupe une zone s'étendant de la moitié à la totalité de la surface d'un ticket. Ces tickets sont ensuite approchés des antennes plates, contenues dans les dispositifs d'échange d'informations, pour pouvoir effectuer des opérations de télébillétique. Cependant, de tels tickets électroniques munis d'antennes de grandes dimensions restent relativement coûteux.In addition, the electronic tickets used, which are in particular smart cards without flush contact, are also provided with a transmit / receive antenna. This antenna generally has large dimensions and occupies an area extending from half to the entire surface of a ticket. These tickets are then approached from the flat antennas contained in the information exchange devices, in order to be able to carry out teleticketing operations. However, such electronic tickets with large antennas remain relatively expensive.
Afin d'amoindrir leur coût de fabrication, la demanderesse a déjà inventé un procédé, décrit dans la demande de brevet FR n° 94 02130, qui permet de réaliser des cartes à puces sans contact affleurant comprenant une antenne dont les dimensions ont été considérablement réduites. L'antenne est par conséquent localisée, avec un module électronique associé, dans une zone de la carte dont le format est plus petit que celui de cette carte.In order to reduce their manufacturing cost, the applicant has already invented a process, described in patent application FR No. 94 02130, which makes it possible to produce smart cards without flush contact comprising an antenna whose dimensions have been considerably reduced. . The antenna is therefore located, with an associated electronic module, in an area of the card whose format is smaller than that of this card.
Cependant, lorsque l'antenne du ticket électronique, ou de la carte à puce sans contact, est ramenée à de très faibles dimensions, la fiabilité du processus d'échange d'informations est alors elle aussi très amoindrie. En effet, il se peut qu'un utilisateur de la carte présente, vis-à-vis de l'antenne plate et rigide du dispositif d'échange d'informations, une zone de la carte ne comportant pas d'antenne. Dans ce cas, aucune émission/réception, c'est à dire aucune transmission d'informations, ne peut avoir lieu.However, when the antenna of the electronic ticket, or of the contactless smart card, is reduced to very small dimensions, the reliability of the information exchange process is then also greatly reduced. Indeed, it may be that a user of the card has, vis-à-vis the flat and rigid antenna of the information exchange device, an area of the card not comprising an antenna. In this case, no transmission / reception, ie no transmission of information, can take place.
Par conséquent, le problème qui s'est posé a consisté à chercher un moyen de réaliser un dispositif d'échange d'informations sans contact avec un ticket électronique, apte à effectuer une lecture et/ou une écriture sûre et rapide, quelles que soient les dimensions et la localisation de l'antenne dans ce ticket.Consequently, the problem which has arisen has consisted in seeking a means of producing a device for exchanging information without contact with an electronic ticket, capable of reading and / or writing safely and quickly, whatever the dimensions and location of the antenna in this ticket.
La présente invention a permis de résoudre ce problème puisqu'elle propose un dispositif d'échange d'informations sans contact avec un ticket électronique sans contact, comportant pour cela une antenne d'émission/réception, caractérisé en ce qu'il comporte en outre un système de guidage pour permettre le passage du ticket, et en ce que son antenne d'émission/réception s'étend de chaque côté du système de guidage.The present invention has made it possible to solve this problem since it provides a contactless information exchange device with a contactless electronic ticket, comprising for this a transmitting / receiving antenna, characterized in that it also comprises a guidance system to allow the passage of the ticket, and in that its transmit / receive antenna extends on each side of the guidance system.
Le dispositif selon l'invention permet en outre d'effectuer, lors du passage du ticket, une lecture et/ou une écriture d'informations quelle que soit la position du ticket par rapport à l'antenne d'émission/réception de ce dispositif. De plus, la réalisation d'un tel dispositif n'engendre pas de surcoût par rapport à la fabrication d'une antenne plate et rigide de taille sensiblement plus grande comme celles utilisées à ce jour.The device according to the invention also makes it possible, during the passage of the ticket, to read and / or write information whatever the position of the ticket relative to the transmit / receive antenna of this device. . In addition, the realization of such a device does not generate any additional cost compared to the manufacture of a flat and rigid antenna of substantially larger size like those used to date.
D'autres particularités et avantages de l'invention apparaîtront à la lecture de la description faite à titre d'exemple illustratif et non limitatif en référence aux figures annexées qui représentent :Other features and advantages of the invention will appear on reading the description given by way of illustrative and nonlimiting example with reference to the appended figures which represent:
- la figure 1, un schéma d'un premier mode de réalisation d'un dispositif selon l'invention, - la figure 2, un schéma plus détaillé du dispositif de la figure 1,- Figure 1, a diagram of a first embodiment of a device according to the invention, - Figure 2, a more detailed diagram of the device of Figure 1,
- les figures 3A, 3B et 3C respectivement une vue de dessus, une vue éclatée et une vue en coupe partielle d'une antenne d'émission/réception associée au dispositif de la figure 2,FIGS. 3A, 3B and 3C respectively a top view, an exploded view and a partial section view of a transmit / receive antenna associated with the device of FIG. 2,
- les figures 4A et 4B, un schéma d'un autre mode de réalisation d'un dispositif selon l'invention et de son antenne d'émission/réception associée.- Figures 4A and 4B, a diagram of another embodiment of a device according to the invention and its associated transmit / receive antenna.
De manière générale, la présente invention se rapporte à un dispositif permettant d'échanger des informations avec un ticket électronique. Ce ticket électronique peut se présenter sous différentes formes. Tout au long de la description qui suit, il est question de cartes à puce sans contact affleurant. Cependant, ce n'est qu'un exemple qui ne doit pas être interprété limitativement. Le dispositif selon l'invention est en outre relié à un coupleur qui est lui-même associé à un lecteur apte à interpréter les données échangées.In general, the present invention relates to a device for exchanging information with an electronic ticket. This electronic ticket can come in different forms. Throughout the following description, there is a question of flush contactless smart cards. However, this is only an example which should not be interpreted restrictively. The device according to the invention is also connected to a coupler which is itself associated with a reader capable of interpreting the data exchanged.
Un mode de réalisation d'un dispositif selon l'invention est représenté sur la figure 1. De manière avantageuse, le dispositif comprend un système de guidage désigné par la référence 10 sur la figure 1. Ce dispositif comprend en outre une antenne d'émission/reception 20 qui s'étend de chaque côté du système de guidage 10. Cette antenne 20 permet d'induire un champ électromagnétique à l'intérieur du système de guidage. Ce champ électromagnétique est utilisé en vue de communiquer avec la puce d'une carte à puce sans contact 60, par l'intermédiaire d'une antenne d'émission/réception reliée à cette puce et non représentée sur la figure 1. Un utilisateur peut alors passer sa carte à puce sans contact 60, dans le système de guidage 10, afin de déclencher le processus d'échange d'informations. Le passage de la carte 60 dans le système de guidage 10 se fait de manière aussi naturelle que si la carte était présentée à 10 cm du dispositif.An embodiment of a device according to the invention is shown in Figure 1. Advantageously, the device comprises a guidance system designated by the reference 10 in Figure 1. This device further comprises a transmitting antenna / reception 20 which extends on each side of the guidance system 10. This antenna 20 makes it possible to induce an electromagnetic field inside the guidance system. This electromagnetic field is used to communicate with the chip of a contactless smart card 60, via a transmit / receive antenna connected to this chip and not shown in FIG. 1. A user can then pass his contactless smart card 60, in the guidance system 10, in order to trigger the information exchange process. The passage of the card 60 in the guide system 10 takes place as naturally as if the card were presented 10 cm from the device.
Sur la figure 1, deux cartes à puces sans contact 60 sont représentées. L'une est placée horizontalement, c'est à dire de telle manière que son côté longitudinal soit parallèle à l'axe longitudinal du système de guidage, tandis que l'autre carte est placée verticalement, c'est à dire de telle manière que son côté longitudinal soit perpendiculaire à l'axe longitudinal du système de guidage 10. Elles comportent chacune un module électronique 61 renfermant une antenne d'émission/réception de faibles dimensions et une puce associée, par exemple tel que décrit dans la demande de brevet FR n° 94 02130. Ce module électronique peut être localisé à un endroit quelconque dans les cartes 60. Sur la figure 1, les modules 61 ont été représentés au centre de chaque carte 60.In Figure 1, two contactless smart cards 60 are shown. One is placed horizontally, i.e. in such a way that its longitudinal side is parallel to the longitudinal axis of the guide system, while the other card is placed vertically, i.e. in such a way that its longitudinal side is perpendicular to the longitudinal axis of the guide system 10. They each include an electronic module 61 containing a small transmission / reception antenna and an associated chip, for example as described in patent application FR No. 94 02130. This electronic module can be located at any location in the cards 60. In FIG. 1, the modules 61 have been shown in the center of each card 60.
Les dimensions du système de guidage 10 sont telles que sa longueur et sa hauteur sont supérieures à la longueur des cartes 60 pour permettre le déclenchement du processus d'échanges d'informations quelle que soit la position de ces cartes, c'est-à-dire qu'elles soient orientées verticalement ou horizontalement. De préférence, la longueur du système de guidage 10 est deux à dix fois supérieure à la longueur d'une carte 60. De plus, grâce à de telles dimensions un utilisateur est toujours certain que le module électronique 61 de sa carte 60, et plus particulièrement l'antenne associée, est entièrement plongé dans le champ électromagnétique créé à l'intérieur du système de guidage lors du passage de la carte. Par conséquent, le dispositif selon l'invention permet de présenter une carte 60 dans n'importe quel sens, sans se préoccuper de l'orientation du module électronique 61 par rapport à l'antenne 20 du système de guidage 10.The dimensions of the guidance system 10 are such that its length and its height are greater than the length of the cards 60 to allow the initiation of the information exchange process regardless of the position of these cards, that is to say say that they are oriented vertically or horizontally. Preferably, the length of the guide system 10 is two to ten times greater than the length of a card 60. In addition, thanks to such dimensions a user is always certain that the electronic module 61 of his card 60, and more particularly the associated antenna, is fully immersed in the electromagnetic field created inside the guidance system during the passage of the card. Consequently, the device according to the invention makes it possible to present a card 60 in any direction, without being concerned with the orientation of the electronic module 61 relative to the antenna 20 of the guidance system 10.
En outre, la section du guide 10 est de préférence en forme de V. La largeur est mesurée dans sa partie supérieure et est telle qu'elle permet le passage d'au moins une carte 60 ainsi que la main d'un utilisateur tenant cette carte, et éventuellement un porte-carte afin de pouvoir effectuer un échange d'informations même lorsque la carte 60 est restée insérée dans ce porte-carte. Cependant, selon une variante de réalisation, la section du guide 10 peut être en forme de U.In addition, the section of the guide 10 is preferably V-shaped. The width is measured in its upper part and is such that it allows the passage of at least one card 60 as well as the hand of a user holding this card, and possibly a card holder in order to be able to exchange information even when the card 60 has remained inserted in this card holder. However, according to an alternative embodiment, the section of the guide 10 can be U-shaped.
Dans une autre variante de réalisation, il est possible de réduire la hauteur et la largeur du système de guidage 10 pour minimiser l'encombrement du dispositif ou alors pour répondre à des contraintes ergonomiques différentes. Toutefois, dans ce cas, l'orientation de la carte peut devenir très importante.In another alternative embodiment, it is possible to reduce the height and the width of the guide system 10 to minimize the size of the device or else to respond to different ergonomic constraints. However, in this case, the orientation of the map can become very important.
De manière avantageuse, le système de guidage est réalisé dans une matière plastique rigide. Il peut en outre reposer sur un socle 11 tel que représenté sur la figure 1. Dans ce cas, sa fixation sur le socle peut se faire par collage ou par vissage par exemple. Le dispositif peut aussi être intégré à une borne de lecture par exemple.Advantageously, the guide system is made of a rigid plastic material. It can also rest on a base 11 as shown in Figure 1. In this case, its attachment to the base can be done by gluing or by screwing for example. The device can also be integrated into a reading terminal for example.
La figure 2 représente le dispositif de la figure 1 de manière un peu plus détaillée. L'antenne d'émission/réception 20 associée au dispositif est en fait dédoublée et comporte deux éléments 21, 22 placés en vis-à-vis et de part et d'autre du système de guidage 10. Ces deux éléments sont par exemple deux bobines 21 et 22 en série possédant chacune au moins une spire. Ces deux bobines sont destinées à être reliées à un coupleur qui est lui-même associé à un lecteur apte à interpréter les données échangées.Figure 2 shows the device of Figure 1 in a little more detail. The transmit / receive antenna 20 associated with the device is in fact split and comprises two elements 21, 22 placed opposite and on either side of the guidance system 10. These two elements are for example two coils 21 and 22 in series each having at least one turn. These two coils are intended to be connected to a coupler which is itself associated with a reader capable of interpreting the data exchanged.
De manière avantageuse, cette antenne 20 est réalisée sur un film 30 en matière plastique flexible. Elle est en outre disposée à l'extérieur du système de guidage 10 de manière à éviter que les cartes viennent la détériorer lors de leurs passages successifs.Advantageously, this antenna 20 is produced on a film 30 of flexible plastic material. It is also arranged outside of the guide system 10 so as to prevent the cards from damaging it during their successive passages.
Une variante de réalisation consiste à protéger cette antenne 20 contre des chocs extérieurs éventuels en la recouvrant d'un second matériau plastique épousant par exemple la forme du système de guidage 10.An alternative embodiment consists in protecting this antenna 20 against possible external shocks by covering it with a second plastic material matching, for example, the shape of the guide system 10.
Le mode de réalisation de cette antenne d'émission/réception 20 sera mieux compris au regard des figures 3A, 3B et 3C qui représentent respectivement une vue de dessus, une vue éclatée et une vue en coupe partielle de l'antenne.The embodiment of this transmit / receive antenna 20 will be better understood with reference to FIGS. 3A, 3B and 3C which respectively represent a top view, an exploded view and a view in partial section of the antenna.
De manière avantageuse, cette antenne 20 est réalisée sur un support flexible 30 en matière plastique, commercialisée par exemple sous la marque "Kapton". Les deux bobines 21 et 22 sont réalisées par gravure, sous forme de pistes circulaires, d'une feuille métallique, telle qu'une feuille de cuivre par exemple, préalablement déposée ou collée sur le support plastique 30. Ces deux bobines 21, 22 sont respectivement reliées aux pôles 28 positif et négatif d'un coupleur. Une variante de réalisation consiste à réaliser des bobines se présentant sous d'autres formes quelconques, telles que des formes rectangulaires par exemple.Advantageously, this antenna 20 is produced on a flexible support 30 made of plastic material, marketed for example under the brand "Kapton". The two coils 21 and 22 are produced by etching, in the form of circular tracks, a metal sheet, such as a copper sheet for example, previously deposited or glued to the plastic support 30. These two coils 21, 22 are respectively connected to the positive and negative poles 28 of a coupler. An alternative embodiment consists in producing coils in any other form, such as rectangular shapes for example.
Un blindage 23 permet en outre non seulement d'éviter tout rayonnement parasite éventuel vers l'extérieur, mais aussi de protéger les deux bobines 21, 22 contre des ondes provenant de l'extérieur. Ce blindage est également réalisé par gravure d'une feuille de cuivre. Il comprend une couche supérieure 23A et une couche inférieure 23B disposées de part et d'autre des bobines 21 et 22 tel que représenté sur les figures 3B et 3C. Ces deux couches inférieures et supérieures sont reliées l'une à l'autre grâce à des puits métallisés 24, creusés dans l'épaisseur du support 30 et répartis sur tout le pourtour de ce blindage 23. Ces puits sont par exemple en cuivre. De plus, un entrefer 25A, 25B est pratiqué dans le blindage de chaque bobine de manière à permettre le fonctionnement en antenne magnétique.Shielding 23 also makes it possible not only to avoid any parasitic radiation towards the outside, but also to protect the two coils 21, 22 against waves coming from the outside. This shielding is also carried out by etching a copper sheet. It comprises an upper layer 23A and a lower layer 23B arranged on either side of the coils 21 and 22 as shown in Figures 3B and 3C. These two lower and upper layers are connected to each other by metallized wells 24, dug in the thickness of the support 30 and distributed over the entire periphery of this shielding 23. These wells are for example made of copper. In addition, an air gap 25A, 25B is made in the shielding of each coil so as to allow operation as a magnetic antenna.
Les deux bobines 21, 22 sont en outre électriquement raccordées au moyen d'une traversée métallique 26 aux extrémités de laquelle sont prévus des puits 27 métallisés, en cuivre par exemple.The two coils 21, 22 are also electrically connected by means of a metal bushing 26 at the ends of which are provided metallized wells 27, made of copper for example.
Cette antenne 20 est ensuite repliée selon l'axe de pliage 29, passant par le centre de la traversée de raccordement 26, tel que représenté sur la figure 3A.This antenna 20 is then folded along the folding axis 29, passing through the center of the connection bushing 26, as shown in FIG. 3A.
La vue éclatée de la figure 3B permet de mettre en évidence les couches inférieure 23B et supérieure 23A du blindage, les bobines 21, 22 et les liaisons entre les deux couches de blindage et les deux bobines. L'antenne 20 est en fait constituée par un assemblage de plusieurs couches et réalisée par une technique couramment utilisée dans la fabrication des circuits imprimés. Une première couche 1, que l'on peut encore appeler circuit double face 1, comporte, sur la face supérieure de son support 31 en Kapton, les deux bobines 21, 22 obtenues par gravure d'une feuille de cuivre, et sur la face inférieure de ce même support 31, le blindage inférieur 23B également obtenu par gravure d'une feuille de cuivre. Le blindage inférieur 23B étant sur la face inférieure du support 31, il est représenté en pointillés sur la figure 3B.The exploded view of FIG. 3B makes it possible to highlight the lower layers 23B and upper 23A of the shielding, the coils 21, 22 and the connections between the two shielding layers and the two coils. The antenna 20 is in fact constituted by an assembly of several layers and produced by a technique commonly used in the manufacture of printed circuits. A first layer 1, which can also be called double-sided circuit 1, comprises, on the upper face of its support 31 in Kapton, the two coils 21, 22 obtained by etching a sheet of copper, and on the face lower of the same support 31, the lower shield 23B also obtained by etching a copper sheet. The lower shield 23B being on the underside of the support 31, it is shown in dotted lines in FIG. 3B.
Une deuxième couche 2, encore appelée circuit simple face 2, comporte sur la face supérieure de son support 32 en Kapton, le blindage supérieur 23A obtenu par gravure d'une feuille de cuivre préalablement déposée ou collée sur le support. La traversée métallique de raccordement 26 permettant de relier les deux bobines 21, 22 est également réalisée sur la face supérieure de ce circuit simple face 2.A second layer 2, also called single-sided circuit 2, comprises on the upper face of its support 32 in Kapton, the upper shield 23A obtained by etching a copper foil previously deposited or glued to the support. The metallic connection bushing 26 for connecting the two coils 21, 22 is also produced on the upper face of this single-sided circuit 2.
Les couches inférieure 23B et supérieure 23A du blindage 23 sont électriquement reliées entre-elles au moyen de puits métalliques 24 creusés dans les couches des deux circuits 1 et 2. Un de ces puits 24 est schématisé par un trait vertical 24 sur la figure 3B. Ces puits sont réalisés dans un matériau tel que du cuivre par exemple. Deux traits verticaux 27 représentés sur cette figure 3B permettent également de schématiser les puits reliés aux extrémités de la traversée métallique 26 du circuit simple face 2 en vue de raccorder les deux bobines 21 et 22. De préférence ces puits 27 sont également en cuivre.The lower 23B and upper 23A layers of the shield 23 are electrically connected to one another by means of metal wells 24 dug in the layers of the two circuits 1 and 2. One of these wells 24 is shown diagrammatically by a vertical line 24 in FIG. 3B. These wells are made of a material such as copper for example. Two vertical lines 27 shown in this FIG. 3B also make it possible to diagram the wells connected to the ends of the metal bushing 26 of the single-sided circuit 2 in order to connect the two coils 21 and 22. Preferably these wells 27 are also made of copper.
Des métallisations 28, également représentées par deux traits verticaux sur la figure 3B, sont destinées à raccorder chaque bobine 21, 22 à un câble blindé apte à se connecter à un coupleur. Les deux circuits 1 et 2 sont assemblés par collage par exemple.Metallizations 28, also represented by two vertical lines in FIG. 3B, are intended to connect each coil 21, 22 to a screened cable able to connect to a coupler. The two circuits 1 and 2 are assembled by gluing, for example.
La figure 3C représente un schéma en coupe partielle selon la section A-A de la figure 3A. Cette coupe permet d'identifier à nouveau les spires de la bobine 21, les couches supérieure 23A et inférieure 23B de blindage reliées entre-elles par des puits 24 creusés dans l'épaisseur de l'antenne, et un puits 27 de raccordement de la bobine 21 à la traversée métallique 26 non visible sur cette figure 3C. La couche 3 représente une couche de colle par exemple destinée à assembler les deux circuits simple et double face. De manière avantageuse, l'épaisseur totale de l'antenne ainsi réalisée est comprise entre 1 et 5mm.FIG. 3C represents a diagram in partial section along section AA of FIG. 3A. This section again identifies the turns of the coil 21, the upper 23A and lower 23B shielding layers linked together by wells 24 dug in the thickness of the antenna, and a well 27 for connecting the coil 21 at the metal bushing 26 not visible in this figure 3C. Layer 3 represents a layer of adhesive, for example intended to assemble the two single and double-sided circuits. Advantageously, the total thickness of the antenna thus produced is between 1 and 5mm.
Selon une autre variante de réalisation, les bobines 21 et 22 peuvent par exemple se présenter sous une forme oblongue, de manière à créer un champ électromagnétique uniforme tout le long du système de guidage 10.According to another alternative embodiment, the coils 21 and 22 can for example be in an oblong shape, so as to create a uniform electromagnetic field all along the guide system 10.
Un autre mode de réalisation de l'antenne d'émission/reception du dispositif selon l'invention est illustré sur les figures 4A et 4B. Cette antenne comprend un noyau magnétique 40 présentant un entrefer 41 dans lequel vient se loger le système de guidage 10. Une bobine 45, reliée respectivement aux pôles positif et négatif d'un coupleur, entoure une zone de ce noyau magnétique 40. Cette bobine permet d'induire un champ électromagnétique qui est ensuite concentré et canalisé, par le noyau magnétique 40, dans l'entrefer 41 correspondant à la zone de passage de la carte à puce sans contact.Another embodiment of the transmit / receive antenna of the device according to the invention is illustrated in FIGS. 4A and 4B. This antenna comprises a magnetic core 40 having an air gap 41 in which the guide system 10 is housed. A coil 45, connected respectively to the positive and negative poles of a coupler, surrounds an area of this magnetic core 40. This coil allows to induce an electromagnetic field which is then concentrated and channeled, by the magnetic core 40, in the air gap 41 corresponding to the passage area of the contactless smart card.
De manière avantageuse le noyau magnétique 40 est réalisé dans un matériau en ferrite. Il est par exemple constitué par un assemblage de deux éléments 40A et 40B en forme de U à branches dissymétriques, tel qu'illustré sur la figure 4B. L'assemblage peut par exemple être effectué par collage. Cet assemblage provoque, à l'interface entre les deux éléments 40A et 40B, la création d'un entrefer parasite 44 par lequel des fuites sont susceptibles de se propager. Le bobinage 45 peut être localisé à un endroit quelconque sur le noyau magnétique 40. Cependant, il est préférable de le réaliser autour de l'entrefer parasite 44 afin de le masquer et d'éviter ainsi toute production éventuelle de perturbations vers 1'extérieur.Advantageously, the magnetic core 40 is made of a ferrite material. It is for example constituted by an assembly of two elements 40A and 40B in the form of U with asymmetrical branches, as illustrated in FIG. 4B. The assembly can for example be carried out by gluing. This assembly causes, at the interface between the two elements 40A and 40B, the creation of a parasitic air gap 44 through which leaks are liable to spread. The coil 45 can be located at any location on the magnetic core 40. However, it is preferable to produce it around the parasitic air gap 44 in order to mask it and thus avoid any possible production of disturbances to the outside.
Le noyau magnétique 40 transforme l'antenne formée dans le système de guidage 10, selon le premier mode de réalisation, en une antenne concentrant toute l'énergie émise dans l'entrefer 41.The magnetic core 40 transforms the antenna formed in the guidance system 10, according to the first embodiment, into an antenna concentrating all the energy emitted in the air gap 41.
La section en U des deux éléments en ferrite 40A et 40B peut être indifféremment carrée ou arrondie. De plus la longueur de ces deux éléments peut être adaptée à celle du système de guidage 10. Dans ce cas, il y a création d'un champ électromagnétique uniforme à 1'intérieur du système de guidage.The U-shaped section of the two ferrite elements 40A and 40B can be either square or rounded. In addition, the length of these two elements can be adapted to that of the guidance system 10. In this case, a uniform electromagnetic field is created inside the guidance system.
Le flux de champ induit par le bobinage étant guidé par le noyau magnétique 40 , ceci permet d'obtenir les mêmes performances qu'avec l'antenne 20, réalisée sur un film flexible selon le premier mode de réalisation précédemment décrit, tout en générant un champ largement moins élevé.The field flux induced by the winding being guided by the magnetic core 40, this makes it possible to obtain the same performance as with the antenna 20, produced on a flexible film according to the first embodiment described above, while generating a significantly lower field.
La concentration du flux du champ induit par le noyau magnétique permet d'obtenir un résultat identique avec une puissance, émise par le lecteur, beaucoup plus faible.The concentration of the field flux induced by the magnetic core makes it possible to obtain an identical result with a much lower power, emitted by the reader.
Il est également possible d'utiliser un niveau de champ très élevé dans l'entrefer 41 puisque les lignes de force sont guidées dans l'entrefer 41 et ne peuvent "s'évader" à distance.It is also possible to use a very high field level in the air gap 41 since the lines of force are guided in the air gap 41 and cannot "escape" from a distance.
En tant que variante de réalisation, l'antenne émission/réception 20 peut être assimilée à une sinusoïde qui est dédoublée de manière à s'étendre de chaque côté du système de guidage 10. Par conséquent, elle comporte deux éléments sinusoïdaux qui forment une seule bobine. Cet avantage est considérable car par rapport à l'art antérieur, une bobine unique est utilisée, l'avantage technique et économique étant très enviable. Les difficultés de réalisation, de coût, de rendement et de manque d'homogénéité des performances sont vaincues de part l'utilisation d'une bobine dédoublée unique. As an alternative embodiment, the transmit / receive antenna 20 can be assimilated to a sinusoid which is split so as to extend on each side of the guide system 10. Consequently, it comprises two sinusoidal elements which form a single coil. This advantage is considerable because compared to the prior art, a single coil is used, the technical and economic advantage being very enviable. The difficulties of production, cost, yield and lack of uniformity of performance are overcome by the use of a single split coil.

Claims

REVENDICATIONS
1. Dispositif d'échange d'informations sans contact avec un ticket électronique sans contact (60) , comportant pour cela une antenne d'émission/réception (20), caractérisé en ce qu'il comporte en outre un système de guidage (10) pour permettre le passage du ticket (60) et en ce que son antenne d'émission/réception (20) s'étend de chaque côté du système de guidage (10) par dédoublement.1. Device for exchanging contactless information with a contactless electronic ticket (60), comprising for this a transmitting / receiving antenna (20), characterized in that it further comprises a guidance system (10 ) to allow the passage of the ticket (60) and in that its transmit / receive antenna (20) extends on each side of the guidance system (10) by duplication.
2. Dispositif selon la revendication l caractérisé en ce que ladite antenne (20) comporte deux éléments (21, 22) en série qui sont placés en vis-à-vis et de part et d'autre du système de guidage (10) .2. Device according to claim l characterized in that said antenna (20) comprises two elements (21, 22) in series which are placed opposite and on either side of the guide system (10).
3. Dispositif selon la revendication l ou 2 caractérisé en ce que les deux éléments (21, 22) sont deux bobines en série possédant chacune au moins une spire. 3. Device according to claim l or 2 characterized in that the two elements (21, 22) are two coils in series each having at least one turn.
4. Dispositif selon la revendication 1 ou 2 caractérisé en ce que les deux éléments sont une seule bobine.4. Device according to claim 1 or 2 characterized in that the two elements are a single coil.
5. Dispositif selon l'une quelconque des revendications 1 à 4 caractérisé en ce que les bobines5. Device according to any one of claims 1 to 4 characterized in that the coils
(21, 22) de son antenne d'émission/réception (20) sont obtenues par gravure d'une feuille métallique préalablement déposée sur un film flexible (30) en plastique et sont protégées par un blindage(23) .(21, 22) of its transmit / receive antenna (20) are obtained by etching a metal sheet previously deposited on a flexible plastic film (30) and are protected by a shield (23).
6. Dispositif selon l'une quelconque des revendications 1 à 5 caractérisé en ce que son antenne (20) est constituée par un assemblage de deux circuits,- le premier circuit (1) comprenant un support en plastique (31) sur la face supérieure duquel sont réalisées les deux bobines (21, 22) et sur la face inférieure duquel est pratiqué un premier blindage (23B) , le deuxième circuit (2) comprenant un autre support plastique (32) sur la face supérieure duquel est pratiqué un deuxième blindage (23A) ; une traversée métallique de raccordement (26) permet de relier les deux bobines (21, 22) ; et des puits métalliques (24) , creusés dans l'épaisseur des deux circuits et répartis sur tout le pourtour des blindages, permettent de relier les faces supérieure (23A) et inférieure (23B) du blindage. 6. Device according to any one of claims 1 to 5 characterized in that its antenna (20) consists of an assembly of two circuits, - the first circuit (1) comprising a plastic support (31) on the upper face from which the two coils (21, 22) are produced and on the underside of which a first shield (23B) is formed, the second circuit (2) comprising another plastic support (32) on the upper face of which a second shield is formed (23A); a metallic connection bushing (26) makes it possible to connect the two coils (21, 22); and metal wells (24), dug in the thickness of the two circuits and distributed all around the shields, connect the upper (23A) and lower (23B) sides of the shield.
7. Dispositif selon l'une quelconque des revendications 1 à 6 caractérisé en ce que les bobines (21, 22) de son antenne (20) sont circulaires, rectangulaires, oblongues, ou de toute autre forme.7. Device according to any one of claims 1 to 6 characterized in that the coils (21, 22) of its antenna (20) are circular, rectangular, oblong, or any other shape.
8. Dispositif selon la revendication 1 caractérisé en ce que l'antenne (20) comprend un noyau magnétique (40) présentant un entrefer (41) dans lequel vient se loger le système de guidage (10) , et une bobine (45) entourant une zone du noyau magnétique et permettant d'induire un champ électromagnétique.8. Device according to claim 1 characterized in that the antenna (20) comprises a magnetic core (40) having an air gap (41) in which is housed the guide system (10), and a coil (45) surrounding an area of the magnetic core and allowing to induce an electromagnetic field.
9. Dispositif selon la revendication 8 caractérisé en ce que le noyau magnétique (40) est en ferrite et est constitué par un assemblage de deux éléments (40A, 40B) en forme de U à branches dissymétriques.9. Device according to claim 8 characterized in that the magnetic core (40) is made of ferrite and consists of an assembly of two elements (40A, 40B) in the form of U with asymmetrical branches.
10. Dispositif selon l'une des revendications 1 à 9 caractérisé en ce que la section du système de guidage (10) est en forme de V.10. Device according to one of claims 1 to 9 characterized in that the section of the guide system (10) is V-shaped.
11. Dispositif selon l'une des revendications 1 à 10 caractérisé en ce que la longueur et la hauteur du système de guidage (10) sont supérieures à la longueur du ticket électronique et sa largeur minimale est telle qu'elle permet le passage du ticket, d'une main tenant ce ticket, et éventuellement d'un porte-carte.11. Device according to one of claims 1 to 10 characterized in that the length and the height of the guide system (10) are greater than the length of the electronic ticket and its minimum width is such that it allows the passage of the ticket , with one hand holding this ticket, and possibly a card holder.
12 Dispositif selon l'une des revendications 1 à 11 caractérisé en ce que le ticket électronique (60) c est une carte à puce sans contact affleurant comportant une antenne reliée à la puce et localisée dans une zone de la carte dont le format est plus petit que celui de ladite carte. 12 Device according to one of claims 1 to 11 characterized in that the electronic ticket (60) c is a contactless smart card flush with an antenna connected to the chip and located in an area of the card whose format is more smaller than that of said card.
PCT/FR1997/000429 1996-03-11 1997-03-11 Device for contactless data exchange with an electronic ticket WO1997034249A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR96/03044 1996-03-11
FR9603044A FR2745928B1 (en) 1996-03-11 1996-03-11 NON-CONTACT INFORMATION EXCHANGE DEVICE WITH AN ELECTRONIC TICKET

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WO1997034249A1 true WO1997034249A1 (en) 1997-09-18

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FR (1) FR2745928B1 (en)
WO (1) WO1997034249A1 (en)

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US6507763B1 (en) 1997-09-17 2003-01-14 Logitech Europe S.A. Antenna system and apparatus for radio-frequency wireless keyboard
WO2006086658A1 (en) 2005-02-11 2006-08-17 Cornwell, James Antenna system
EP1865444A1 (en) * 2005-02-25 2007-12-12 Nidec Sankyo Corporation Information read device
EP1906415A2 (en) * 2006-09-28 2008-04-02 Broadcom Corporation Hybrid on-chip-off-chip transformer
EP1965334A1 (en) * 2007-02-27 2008-09-03 Hitachi-Omron Terminal Solutions, Corp. Manual noncontact IC card reader

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US6215454B1 (en) 1998-02-20 2001-04-10 Qualcomm, Inc. Multi-layered shielded substrate antenna
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EP1665459A4 (en) * 2003-05-01 2006-11-22 Meadwestvaco Corp Apparatus for and method of providing an antenna integral balun
US7417599B2 (en) 2004-02-20 2008-08-26 3M Innovative Properties Company Multi-loop antenna for radio frequency identification (RFID) communication
US7591415B2 (en) 2004-09-28 2009-09-22 3M Innovative Properties Company Passport reader for processing a passport having an RFID element

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US6507763B1 (en) 1997-09-17 2003-01-14 Logitech Europe S.A. Antenna system and apparatus for radio-frequency wireless keyboard
WO2002007260A2 (en) * 2000-07-19 2002-01-24 Logitech Europe S.A. Three-dimensional geometric space loop antenna
WO2002007260A3 (en) * 2000-07-19 2002-06-06 Logitech Europ Sa Three-dimensional geometric space loop antenna
WO2006086658A1 (en) 2005-02-11 2006-08-17 Cornwell, James Antenna system
EP1856767A1 (en) * 2005-02-11 2007-11-21 James Cornwell Antenna system
EP1856767A4 (en) * 2005-02-11 2008-08-13 Cornwell James Antenna system
EP1865444A1 (en) * 2005-02-25 2007-12-12 Nidec Sankyo Corporation Information read device
EP1865444A4 (en) * 2005-02-25 2010-10-27 Nidec Sankyo Corp Information read device
EP1906415A2 (en) * 2006-09-28 2008-04-02 Broadcom Corporation Hybrid on-chip-off-chip transformer
EP1965334A1 (en) * 2007-02-27 2008-09-03 Hitachi-Omron Terminal Solutions, Corp. Manual noncontact IC card reader
US7740174B2 (en) 2007-02-27 2010-06-22 Hitachi-Omron Terminal Solutions, Corp. Manual noncontact IC card reader

Also Published As

Publication number Publication date
FR2745928A1 (en) 1997-09-12
FR2745928B1 (en) 2001-01-12

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