EP0926305A1 - Safety device, in particular for motor vehicle - Google Patents

Safety device, in particular for motor vehicle Download PDF

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Publication number
EP0926305A1
EP0926305A1 EP98403184A EP98403184A EP0926305A1 EP 0926305 A1 EP0926305 A1 EP 0926305A1 EP 98403184 A EP98403184 A EP 98403184A EP 98403184 A EP98403184 A EP 98403184A EP 0926305 A1 EP0926305 A1 EP 0926305A1
Authority
EP
European Patent Office
Prior art keywords
signal
user
unlocking
biometric
activation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98403184A
Other languages
German (de)
French (fr)
Other versions
EP0926305B1 (en
Inventor
Luc Cabinet Ballot-Schmit Wuidart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics SA
Original Assignee
STMicroelectronics SA
SGS Thomson Microelectronics SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STMicroelectronics SA, SGS Thomson Microelectronics SA filed Critical STMicroelectronics SA
Publication of EP0926305A1 publication Critical patent/EP0926305A1/en
Application granted granted Critical
Publication of EP0926305B1 publication Critical patent/EP0926305B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • 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
    • G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
    • G07C9/25—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
    • G07C9/257—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition electronically
    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
    • G07C2009/00206—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the keyless data carrier being hand operated
    • G07C2009/00214—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks the keyless data carrier being hand operated by one push button
    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • 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
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00563—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys using personal physical data of the operator, e.g. finger prints, retinal images, voicepatterns

Definitions

  • the present invention relates to a system for safety, especially for motor vehicles.
  • a system comprising a fixed terminal and an object portable capable of delivering an unlock signal at the fixed terminal.
  • the fixed terminal consists of the central central locking / unlocking of the vehicle
  • the portable case is constituted by a case of remote control for closing and opening at distance from vehicle doors.
  • the portable object is intended to be carried by a authorized user, including the owner of the vehicle. Its function is to deliver, under certain conditions, a signal from locking / unlocking at the fixed terminal. This signal is generally emitted by carrier wave (wave electromagnetic or infrared wave).
  • carrier wave wave electromagnetic or infrared wave
  • the locking / unlocking signal delivered the portable unit usually has a fixed code or scalable (i.e. whose value is a based on the number of programs previously which must be recognized as valid by the terminal fixed to cause locking or unlocking the vehicle doors.
  • the object of the invention is to overcome this disadvantage of art security systems prior.
  • the idea on which the invention is based consists in associate the security system with his (or her) authorized user (s), so that only this (s) (or these) can (s) cause the unlocking of vehicle doors.
  • the invention proposes to use means for measuring a user's biometric signature (or authorized users).
  • a signature biometric is for example defined by a fingerprint digital, the iris of the eye, or an audiometric spectrum the voice of the authorized user.
  • such a system can present a risk accidental unlocking of the vehicle doors, for example if the authorized user pronounces by inadvertently a word or a sequence of words suitable for unlock the doors while it is is near the vehicle. If he doesn't go not count, he can get away from his vehicle and leave unattended while the doors are unlocked.
  • Another object of the present invention is to suggest ways to prevent any untimely unlocking of the vehicle.
  • the housing function remote control associated with the portable object is preserved, so that the current habits of users are not deeply changed.
  • FIG 1 there is shown schematically a functional unit constituted in the example of realization of the invention by a motor vehicle 101.
  • This one is equipped with a fixed on-board terminal such as a central locking / unlocking centralized 102.
  • the system also includes a portable object 103 such as a remote control unit associated with a key of the vehicle.
  • a portable object 103 such as a remote control unit associated with a key of the vehicle.
  • the housing portable is confused with the remote control box or the vehicle key, and these three expressions are indistinctly used, unless it is otherwise arranged.
  • This portable case is intended for be worn by an authorized user 104 such as the vehicle owner. Other users authorized users may also be required to use the portable box 103 or another similar box which is more personally attributed to them.
  • the portable box 103 is intended to deliver, under certain conditions, a signal of locking / unlocking SD at the fixed terminal 102.
  • This unlock signal can be transmitted by wave carrier such as an electromagnetic wave or a infrared wave. In the first case, it can be of a radio frequency signal modulated in amplitude or in phase.
  • the key 103 conventionally comprises a part metallic 12 forming a key insert, as well as a plastic housing 11 forming head or part of gripping the key.
  • the housing 11 performs a function remote control and for this purpose contains a circuit electronic signal transmission unlocking SD above.
  • the housing of remote control includes means for detecting a active user intervention.
  • These means can for example include one or more keys a keyboard. More simply, these means include a SW switch, for example of the type push button, placed under a first region 13 of the remote control unit 11. This is made of plastic material. Due to the reduced thickness or of adjacent ribs, part 13 of the housing can be bend under the pressure exerted by the thumb 15 of the user in order to activate the switch SW contained in the housing 11 (and which, for this reason, is shown in broken lines in Figure 2).
  • the remote control unit 11 further includes means for measuring a signature biometric of an authorized user of the vehicle.
  • a such means may include a microphone and a voice recognition device to identify the voice of the user.
  • this medium includes a CED fingerprint sensor arranged inside the housing 11 (and which for this reason, is also shown in broken lines in Figure 2) whose active surface is flush with the surface of the housing 11 of the key head.
  • Such sensors are now available in the form of monolithic integrated circuits at a price compatible with the nature of the market for security systems for motor vehicles and which are sufficiently precise and reliable and compact for this type of application.
  • the active surface of this sensor is less than 2 cm 2 .
  • This active surface includes nearly one hundred thousand detection points arranged in a matrix.
  • the sensor delivers digital data in series corresponding to a scan of its active surface. The entire active surface is scanned eight times per second.
  • the fingerprint sensor is arranged in a region 14 of the housing 11 which is opposite to the region 13 above so that the user's index 16 is in contact with part 14 while his thumb 15 is in contact with part 13, when the housing 11 is pinched between these two fingers.
  • the senor can also be disposed on the surface of the housing 11 at the level of the part 13 above, so that the 15 inch of the user is applied against the active surface of the sensor and also exerts through it a pressure to activate the push button SW of the remote control.
  • FIG 3 there is shown a diagram of the portable object according to the invention. More specifically this is a block diagram of means of the invention included in the portable object.
  • the portable object comprises means of detecting an active intervention of a user. These means produce a signal SA1 activation.
  • these means include the SW switch one terminal of which is connected to the positive terminal of a voltage source positive ST1 with negative supply terminal connected to ground.
  • the activation signal SA1 is then delivered by the other terminal of the switch SW. In this way, the signal SA1 is active in the state logic 1 when the SW switch is closed.
  • these means include the switch SW and, in particular when the SW switch is stealthy like a button pusher, they further include a means of time delay MS1.
  • the first terminal of the switch SW is connected as stated above, and its other terminal is connected to the input of the means of MS1 timer, the output of which outputs the signal SA1 activation.
  • This means of delay is by example a monostable time constant circuit T. It has the effect of maintaining the activation signal SA1 in the active state during a time window determined (corresponding to its time constant T), after closing the SW switch. So even if the pressure exerted by the user's thumb 15 on the SW switch is stealthy, the signal activation SA1 is kept active for said time window.
  • the portable case also includes a means of measurement of a biometric signature of the user which, as said before, is preferably a CED fingerprint sensor. This sensor delivers a measurement signal SM2.
  • the portable housing further includes means for generation of the SD unlock signal, including function is to produce the unlock signal when the activation signal SA1 and the signal SM2 measurement are produced in the time window determined T on the one hand, and when the signature measured corresponds to that of an authorized user on the other hand.
  • the management circuit 20 includes furthermore a microcontroller M1 comprising a memory DB2 in which the biometric signatures of one or of several authorized users are memorized (i.e. here the fingerprint of the thumb or index finger as appropriate, or any other finger). These signatures can be stored in the form of a binary data matrix.
  • the signatures biometric of each authorized user are stored in separate areas of DB2 memory referenced by a user number. For example we can provide five separate areas for storing biometric signatures of five authorized users different corresponding to the members of the same family, each of which is fictitiously associated a user number 1, 2, 3, 4 or 5 respectively.
  • the signal SM2 delivered by the sensor Fingerprint CED is a digital signal.
  • the data provided on the second input E2 of the unit 20, are therefore directly exploitable by the microcontroller M1. Otherwise, you must provide an analog / digital converter.
  • the microcontroller M1 is controlled by a program Management.
  • the data contained in the measurement signal SM2 correspond to the data stored in one of the five memory areas of the DB2 memory of the M1 microcontroller, this delivers on an OUT output a signal transmitted to a circuit ER2 emission to cause the emission of the signal of SD unlocking via, for example, an antenna or a infrared diode.
  • the signals SA1 and SM2 can be transmitted on two separate entries of the microcontroller M1 to be treated in a AND type logical operation.
  • the window time T during which the signal SA1 is maintained in the active state, must at least be equal to the duration of data transmission corresponding to a user's fingerprint by the signal of SM2 measurement. A 500 millisecond time window is sufficient.
  • the portable object further comprises at minus another means of measuring biometric data of the user producing another measurement signal.
  • the means for generating the unlocking signal SD then produce the SD signal when the signal activation SA1 and all measurement signals are products in the aforementioned time window T, and when the signature measured corresponds to that of a authorized user and in particular of his fingerprint digital.
  • Such other biometric user data can consist of measured blood pressure at his finger.
  • the means of measuring this biometric data then includes a CPR pressure.
  • biometric datum of the user can still be incorporated by the temperature of his finger.
  • the means of measuring this biometric data then includes a PTC temperature.
  • FIG 3 there is schematically shown a second logic gate PL3 of type ET which receives the SM3 measurement signal from the pressure sensor CPR on a first input, and the activation signal SA1 on a second input.
  • the exit from gate PL3 is transmitted on a second input I2 of the microcontroller M1.
  • a third logic gate PL4 of type ET which receives the measurement signal SM4 generated by the PTC temperature sensor on a first input, and the activation signal SA1 on a second input.
  • the output of gate PL4 is connected to a third input I3 of the microcontroller M1.
  • the unlocking signal SD comprises a impersonal code identifying that of users authorized whose biometric signature has been recognized valid.
  • This impersonal code can simply be consisting of user number 1, 2, 3, 4 or 5 cited above. This allows the activation of comfort in the vehicle upon reception of the SD signal. Of such functions consist for example in the adjustment of seat height, position of rear view mirrors, a set temperature for a on-board air conditioning system, station radio, etc ..., to predefined values corresponding to the usual choices of the user concerned.
  • the unlocking signal SD also includes a vehicle identification code with which the portable object is associated allowing to associate a specific portable object with a unique vehicle.
  • the structure of the fixed terminal for example made up by the central locking / unlocking vehicle doors is not specific to the invention and can therefore conform to those of art systems prior. At the very least, it is within reach of skilled in the art, and for this reason is not described in detail in this discussion.
  • the signal locking / unlocking can also include a scalable code, i.e. a code whose value changes with each transmission.
  • a code whose value changes with each transmission.
  • fraud attempts consisting in capture and record (with electronic means adapted) the lock / unlock signal when issued normally by the user authorized, in order to reproduce it later fraudulently.

Abstract

Car, or other mobile device, security system has a fixed terminal (102) in the car and a portable device (103) or key for use by the driver to supply an unlocking signal (SD). The portable device produces an unlocking signal when a button is pressed, provided the owners biometric signal matches the expected signal. The biometric signal can be a pressure or temperature matching that of the owners finger applied to a button in the key. The latter includes a pressure and or a temperature sensor for measuring the biometric property. The matching of the signal to a stored value must occur within a certain time limit.

Description

La présente invention se rapporte à un système de sécurité, notamment pour véhicule automobile.The present invention relates to a system for safety, especially for motor vehicles.

Plus particulièrement, elle se rapporte à un système comprenant un terminal fixe et un objet portable pouvant délivrer un signal de déverrouillage au terminal fixe.More specifically, it relates to a system comprising a fixed terminal and an object portable capable of delivering an unlock signal at the fixed terminal.

Dans l'exemple d'application envisagé ici, le terminal fixe est constitué par la centrale de verrouillage/déverrouillage centralisé du véhicule, et le boítier portable est constitué par un boítier de télécommande pour la fermeture et l'ouverture à distance des portières du véhicule.In the application example envisaged here, the fixed terminal consists of the central central locking / unlocking of the vehicle, and the portable case is constituted by a case of remote control for closing and opening at distance from vehicle doors.

L'objet portable est destiné à être porté par un utilisateur autorisé, notamment le propriétaire du véhicule. Il a pour fonction de délivrer, sous certaines conditions, un signal de verrouillage/déverrouillage au terminal fixe. Ce signal est en général émis par onde porteuse (onde électromagnétique ou onde infrarouge).The portable object is intended to be carried by a authorized user, including the owner of the vehicle. Its function is to deliver, under certain conditions, a signal from locking / unlocking at the fixed terminal. This signal is generally emitted by carrier wave (wave electromagnetic or infrared wave).

L'expression "terminal fixe" employée ci-dessus pour désigner par exemple la centrale de verrouillage/déverrouillage embarquée à bord du véhicule, est évidemment une expression relative et doit être comprise par référence à l'objet portable.The expression "fixed terminal" used above to designate for example the central locking / unlocking on board the vehicle, is obviously a relative expression and must be understood by reference to the portable object.

Le signal de verrouillage/déverrouillage délivré par l'unité portable comporte en général un code fixe ou évolutif (c'est-à-dire dont la valeur est une fonction du nombre d'émissions antérieurement réalisées) qui doit être reconnu valide par le terminal fixe pour provoquer le verrouillage ou le déverrouillage des portières du véhicule.The locking / unlocking signal delivered the portable unit usually has a fixed code or scalable (i.e. whose value is a based on the number of programs previously which must be recognized as valid by the terminal fixed to cause locking or unlocking the vehicle doors.

Le niveau de sécurité d'un tel système vis à vis des risques de vol est cependant encore imparfait dans la mesure où la seule détention matérielle de l'objet portable permet la plupart du temps de provoquer ce déverrouillage. Ainsi, si l'objet portable est perdu ou volé, un tiers mal intentionné peut aisément s'en servir pour provoquer le déverrouillage des portières du véhicule et dérober les objets qui s'y trouvent voire voler le véhicule.The level of security of such a system vis-à-vis theft risk is however still imperfect in to the extent that mere physical possession of the object portable most of the time can cause this unlocking. So if the portable object is lost or stolen, a malicious third party can easily get away with it be used to unlock the doors from the vehicle and steal objects from it or even steal the vehicle.

L'invention a pour objet de pallier cet inconvénient des systèmes de sécurité de l'art antérieur.The object of the invention is to overcome this disadvantage of art security systems prior.

L'idée qui est à la base de l'invention consiste à associer le système de sécurité à son (ou à ses) utilisateur(s) autorisé(s), afin que seul(s) celui-ci (ou ceux-ci) puisse(nt) provoquer le déverrouillage des portières du véhicule.The idea on which the invention is based consists in associate the security system with his (or her) authorized user (s), so that only this (s) (or these) can (s) cause the unlocking of vehicle doors.

Pour cela l'invention propose d'utiliser des moyens de mesure d'une signature biométrique de l'utilisateur (ou des) utilisateurs autorisé(s). Une telle signature biométrique est par exemple définie par une empreinte digitale, l'iris de l'oeil, ou un spectre audiométrique de la voix de l'utilisateur autorisé.For this, the invention proposes to use means for measuring a user's biometric signature (or authorized users). Such a signature biometric is for example defined by a fingerprint digital, the iris of the eye, or an audiometric spectrum the voice of the authorized user.

L'utilisation d'un tel moyen de mesure d'une signature biométrique dans une fonction d'identification ou d'authentification d'une personne physique est connue dans l'art antérieur. Ainsi, on a déjà imaginé l'utilisation d'un module de reconnaissance vocale dans le terminal fixe pour commander le verrouillage ou le déverrouillage des portières du véhicule au son de la voix de l'utilisateur autorisé. Dans ce cas, l'objet portable devient superflu, et peut avantageusement être supprimé. On obtient ainsi un système d'accès "mains libres" qui semble être le point de convergence des efforts de recherche et de développement dans ce domaine.The use of such a means of measuring a biometric signature in a function identification or authentication of a person physics is known in the prior art. So, we have already imagined the use of a module of voice recognition in the fixed terminal for control the locking or unlocking of vehicle doors to the sound of the voice of the authorized user. In this case, the portable object becomes superfluous, and can advantageously be deleted. This gives a "hands" access system free "which seems to be the point of convergence of research and development efforts in this field.

Cependant, un tel système peut présenter un risque de déverrouillage accidentel des portières du véhicule, par exemple si l'utilisateur autorisé prononce par inadvertance un mot ou une séquence de mots aptes à provoquer le déverrouillage des portières alors qu'il se trouve à proximité du véhicule. S'il ne s'en rend pas compte, il peut s'éloigner de son véhicule et le laisser sans surveillance alors que les portières sont déverrouillées.However, such a system can present a risk accidental unlocking of the vehicle doors, for example if the authorized user pronounces by inadvertently a word or a sequence of words suitable for unlock the doors while it is is near the vehicle. If he doesn't go not count, he can get away from his vehicle and leave unattended while the doors are unlocked.

Un autre objet de la présente invention est de proposer des moyens permettant de prévenir tout déverrouillage intempestif du véhicule.Another object of the present invention is to suggest ways to prevent any untimely unlocking of the vehicle.

A cet effet, l'invention propose un système de sécurité, notamment pour véhicule automobile, comprenant un terminal fixe et un objet portable pouvant délivrer au terminal fixe un signal de verrouillage/déverrouillage d'une unité fonctionnelle telle qu'un véhicule dans lequel l'objet portable comporte:

  • des moyens de détection d'une intervention active d'un utilisateur produisant un signal d'activation;
  • un moyen de mesure d'une signature biométrique de l'utilisateur produisant un premier signal de mesure;
  • des moyens de génération du signal de verrouillage/déverrouillage produisant le signal de verrouillage/déverrouillage lorsque au moins le signal d'activation et le signal de mesure sont produits dans une fenêtre temporelle déterminée d'une part, et lorsque la signature biométrique mesurée correspond à celle d'un utilisateur autorisé d'autre part.
To this end, the invention provides a security system, in particular for a motor vehicle, comprising a fixed terminal and a portable object capable of delivering to the fixed terminal a signal for locking / unlocking a functional unit such as a vehicle in which the portable object includes:
  • means for detecting an active intervention by a user producing an activation signal;
  • means for measuring a biometric signature of the user producing a first measurement signal;
  • means for generating the locking / unlocking signal producing the locking / unlocking signal when at least the activation signal and the measurement signal are produced in a determined time window on the one hand, and when the measured biometric signature corresponds to that of an authorized user on the other hand.

Ainsi une mesure d'une signature biométrique valable est une condition nécessaire pour provoquer l'émission du signal de verrouillage/déverrouillage par l'objet portable. De la sorte, un tiers mal intentionné qui disposerait de l'objet portable ne pourrait valablement s'en servir pour provoquer le déverrouillage du véhicule.Thus a measurement of a biometric signature valid is a necessary condition to provoke the transmission of the locking / unlocking signal by the portable object. In this way, a malicious third party who would have the portable object could not validly use it to cause the unlocking the vehicle.

Mais cette condition n'est pas suffisante. Pour que l'émission du signal de verrouillage/déverrouillage soit provoquée, une intervention active de l'utilisateur est encore nécessaire. De la sorte on évite le déverrouillage intempestif du véhicule.But this condition is not sufficient. So that transmission of the locking / unlocking signal be provoked, an active intervention of the user is still required. So we prevents accidental unlocking of the vehicle.

La caractéristique selon laquelle l'un et l'autre des signaux d'activation et de mesure doivent être valablement générés à l'intérieur d'une fenêtre temporelle déterminée pour que le signal de verrouillage/déverrouillage soit délivré permet de s'affranchir des éventuels problèmes d'ordre et/ou de synchronisation entre la réalisation de ces deux évènements.The characteristic that both activation and measurement signals must be validly generated inside a window time determined so that the signal of locking / unlocking be issued allows get rid of any problems of order and / or synchronization between achieving these two events.

En outre, avec l'invention, la fonction de boítier de télécommande associée à l'objet portable est conservée, en sorte que les habitudes actuelles des utilisateurs ne sont pas profondément modifiées.In addition, with the invention, the housing function remote control associated with the portable object is preserved, so that the current habits of users are not deeply changed.

D'autres caractéristiques et avantages de la présente invention apparaítront encore à la lecture de la description qui va suivre. Celle-ci est purement illustrative est doit être lue en regard des dessins annexés sur lesquels on a représenté :

  • à la figure 1 : un schéma simplifié d'un système de sécurité pour véhicule automobile;
  • à la figure 2 : un exemple d'objet portable selon l'invention;
  • à la figure 3 : un exemple de schéma fonctionnel d'un objet portable selon l'invention.
Other characteristics and advantages of the present invention will become apparent on reading the description which follows. This is purely illustrative and should be read in conjunction with the accompanying drawings, in which:
  • in Figure 1: a simplified diagram of a security system for a motor vehicle;
  • in Figure 2: an example of portable object according to the invention;
  • in FIG. 3: an example of a functional diagram of a portable object according to the invention.

A la figure 1, on a représenté schématiquement une unité fonctionnelle constituée dans l'exemple de réalisation de l'invention par un véhicule automobile 101. Celui-ci est équipé d'un terminal fixe embarqué tel qu'une centrale de verrouillage/déverrouillage centralisé 102.In Figure 1, there is shown schematically a functional unit constituted in the example of realization of the invention by a motor vehicle 101. This one is equipped with a fixed on-board terminal such as a central locking / unlocking centralized 102.

Le système comporte également un objet portable 103 tel qu'un boítier de télécommande associé à une clé du véhicule. Dans la suite de l'exposé, le boítier portable est confondu avec le boítier de télécommande ou la clé du véhicule, et ces trois expressions sont indistinctement employées, à moins qu'il n'en soit disposé autrement. Ce boítier portable est destiné à être porté par un utilisateur autorisé 104 tel que le propriétaire du véhicule. D'autres utilisateurs autorisés peuvent également être amenés à utiliser le boítier portable 103 ou un autre boítier du même genre qui leur est plus personnellement attribué.The system also includes a portable object 103 such as a remote control unit associated with a key of the vehicle. In the rest of the presentation, the housing portable is confused with the remote control box or the vehicle key, and these three expressions are indistinctly used, unless it is otherwise arranged. This portable case is intended for be worn by an authorized user 104 such as the vehicle owner. Other users authorized users may also be required to use the portable box 103 or another similar box which is more personally attributed to them.

Le boítier portable 103 est destinée à délivrer, sous certaines conditions, un signal de verrouillage/déverrouillage SD au terminal fixe 102. Ce signal de déverrouillage peut être émis par onde porteuse telle qu'une onde électromagnétique ou une onde infrarouge. Dans le premier cas, il peut s'agir d'un signal radiofréquence modulé en amplitude ou en phase.The portable box 103 is intended to deliver, under certain conditions, a signal of locking / unlocking SD at the fixed terminal 102. This unlock signal can be transmitted by wave carrier such as an electromagnetic wave or a infrared wave. In the first case, it can be of a radio frequency signal modulated in amplitude or in phase.

A la figure 2, on a représenté une vue plus précise de la clé du véhicule selon l'invention.In Figure 2, there is shown a more precise view of the vehicle key according to the invention.

La clé 103 comporte classiquement une partie métallique 12 formant insert de clé, ainsi qu'un boítier plastique 11 formant tête ou partie de préhension de la clé. Le boítier 11 assure une fonction de télécommande et contient à cet effet un circuit électronique pour l'émission du signal de déverrouillage SD précité.The key 103 conventionally comprises a part metallic 12 forming a key insert, as well as a plastic housing 11 forming head or part of gripping the key. The housing 11 performs a function remote control and for this purpose contains a circuit electronic signal transmission unlocking SD above.

De manière connue en soi, le boítier de télécommande comporte des moyens de détection d'une intervention active de l'utilisateur. Ces moyens peuvent par exemple comprendre une ou plusieurs touches d'un clavier. De manière plus simple, ces moyens comprennent un interrupteur SW, par exemple du type bouton poussoir, disposé sous une première région 13 du boítier de télécommande 11. Celui-ci est réalisé en matière plastique. Du fait d'une moindre épaisseur ou de nervures adjacentes, la partie 13 du boítier peut se plier sous la pression exercée par le pouce 15 de l'utilisateur de manière à actionner l'interrupteur SW contenu dans le boítier 11 (et qui, pour cette raison, est représenté en traits interrompus à la figure 2).In a manner known per se, the housing of remote control includes means for detecting a active user intervention. These means can for example include one or more keys a keyboard. More simply, these means include a SW switch, for example of the type push button, placed under a first region 13 of the remote control unit 11. This is made of plastic material. Due to the reduced thickness or of adjacent ribs, part 13 of the housing can be bend under the pressure exerted by the thumb 15 of the user in order to activate the switch SW contained in the housing 11 (and which, for this reason, is shown in broken lines in Figure 2).

Selon l'invention, le boítier de télécommande 11 comporte en outre un moyen de mesure d'une signature biométrique d'un utilisateur autorisé du véhicule. Un tel moyen peut comprendre un microphone et un dispositif de reconnaissance vocale pour identifier la voix de l'utilisateur. De préférence toutefois, ce moyen comprend un capteur d'empreinte digitale CED disposé à l'intérieur du boítier 11 (et qui pour cette raison, est également représenté en traits interrompus à la figure 2) dont la surface active affleure la surface du boítier 11 de la tête de clé.According to the invention, the remote control unit 11 further includes means for measuring a signature biometric of an authorized user of the vehicle. A such means may include a microphone and a voice recognition device to identify the voice of the user. Preferably, however, this medium includes a CED fingerprint sensor arranged inside the housing 11 (and which for this reason, is also shown in broken lines in Figure 2) whose active surface is flush with the surface of the housing 11 of the key head.

De tels capteurs sont maintenant disponibles sous forme de circuits intégrés monolithiques à un prix compatible avec la nature du marché des systèmes de sécurité pour véhicule automobile et qui sont suffisamment précis et fiables et compacts pour ce type d'application. On peut par exemple utiliser le capteur proposé par la société SGS THOMSON MICROELECTRONICS sous la référence STFP2015-50. La surface active de ce capteur est inférieure à 2 cm2. Cette surface active comporte près de cent mille points de détection disposés en matrice. Le capteur délivre des données numériques en série correspondant à un balayage de sa surface active. Un balayage de la totalité de la surface active est effectué huit fois par seconde.Such sensors are now available in the form of monolithic integrated circuits at a price compatible with the nature of the market for security systems for motor vehicles and which are sufficiently precise and reliable and compact for this type of application. One can for example use the sensor offered by the company SGS THOMSON MICROELECTRONICS under the reference STFP2015-50. The active surface of this sensor is less than 2 cm 2 . This active surface includes nearly one hundred thousand detection points arranged in a matrix. The sensor delivers digital data in series corresponding to a scan of its active surface. The entire active surface is scanned eight times per second.

Dans un premier mode de réalisation possible, le capteur d'empreinte digitale est disposé dans une région 14 du boítier 11 qui est opposée à la région 13 précitée en sorte que l'index 16 de l'utilisateur est au contact de la partie 14 alors que son pouce 15 est au contact de la partie 13, lorsque le boítier 11 est pincé entre ces deux doigts.In a first possible embodiment, the fingerprint sensor is arranged in a region 14 of the housing 11 which is opposite to the region 13 above so that the user's index 16 is in contact with part 14 while his thumb 15 is in contact with part 13, when the housing 11 is pinched between these two fingers.

Mais, dans une variante, le capteur peut également être disposé à la surface du boítier 11 au niveau de la partie 13 précitée, en sorte que le pouce 15 de l'utilisateur est appliqué contre la surface active du capteur et exerce également à travers celle-ci une pression de nature à activer le bouton poussoir SW de la télécommande.However, in a variant, the sensor can also be disposed on the surface of the housing 11 at the level of the part 13 above, so that the 15 inch of the user is applied against the active surface of the sensor and also exerts through it a pressure to activate the push button SW of the remote control.

L'implantation mécanique de l'interrupteur SW et du capteur CED dans le boítier 11 n'est pas limitative et peut être réalisée de toute manière appropriée à la portée de l'homme du métier. Elle ne sera donc pas décrite en détail dans le présent exposé.Mechanical installation of the SW switch and CED sensor in the housing 11 is not limiting and can be performed in any way appropriate to the reach of the skilled person. It will therefore not described in detail in this discussion.

A la figure 3, on a représenté un schéma fonctionnel de l'objet portable selon l'invention. Plus précisément il s'agit d'un schéma fonctionnel des moyens de l'invention compris dans l'objet portable. In Figure 3, there is shown a diagram of the portable object according to the invention. More specifically this is a block diagram of means of the invention included in the portable object.

Selon l'invention, l'objet portable comporte des moyens de détection d'une intervention active d'un utilisateur. Ces moyens produisent un signal d'activation SA1.According to the invention, the portable object comprises means of detecting an active intervention of a user. These means produce a signal SA1 activation.

Dans un premier mode de réalisation, ces moyens comprennent l'interrupteur SW dont une borne est connectée à la borne positive d'une source de tension positive ST1 dont la borne d'alimentation négative est connectée à la masse. Le signal d'activation SA1 est alors délivré par l'autre borne de l'interrupteur SW. De cette manière, le signal SA1 est actif à l'état logique 1 lorsque l'interrupteur SW est fermé.In a first embodiment, these means include the SW switch one terminal of which is connected to the positive terminal of a voltage source positive ST1 with negative supply terminal connected to ground. The activation signal SA1 is then delivered by the other terminal of the switch SW. In this way, the signal SA1 is active in the state logic 1 when the SW switch is closed.

Dans un autre mode de réalisation, ces moyens comprennent l'interrupteur SW et, notamment lorsque l'interrupteur SW est de type furtif comme un bouton poussoir, ils comprennent en outre un moyen de temporisation MS1. La première borne de l'interrupteur SW est connectée ainsi qu'il a été dit ci-dessus, et son autre borne est connectée à l'entrée du moyen de temporisation MS1, dont la sortie délivre le signal d'activation SA1. Ce moyen de temporisation est par exemple un circuit monostable de constante de temps T. Il a pour effet de maintenir le signal d'activation SA1 à l'état actif pendant une fenêtre temporelle déterminée (correspondant à sa constante de temps T), après la fermeture de l'interrupteur SW. Ainsi, même si la pression exercée par le pouce 15 de l'utilisateur sur l'interrupteur SW est furtive, le signal d'activation SA1 est maintenu à l'état actif pendant ladite fenêtre temporelle.In another embodiment, these means include the switch SW and, in particular when the SW switch is stealthy like a button pusher, they further include a means of time delay MS1. The first terminal of the switch SW is connected as stated above, and its other terminal is connected to the input of the means of MS1 timer, the output of which outputs the signal SA1 activation. This means of delay is by example a monostable time constant circuit T. It has the effect of maintaining the activation signal SA1 in the active state during a time window determined (corresponding to its time constant T), after closing the SW switch. So even if the pressure exerted by the user's thumb 15 on the SW switch is stealthy, the signal activation SA1 is kept active for said time window.

Le boítier portable comporte encore un moyen de mesure d'une signature biométrique de l'utilisateur qui, ainsi qu'il a été dit précédemment, est préférentiellement un capteur d'empreinte digitale CED. Ce capteur délivre un signal de mesure SM2.The portable case also includes a means of measurement of a biometric signature of the user which, as said before, is preferably a CED fingerprint sensor. This sensor delivers a measurement signal SM2.

Le boítier portable comporte en outre des moyens de génération du signal de déverrouillage SD, dont la fonction est de produire le signal de déverrouillage lorsque le signal d'activation SA1 et le signal de mesure SM2 sont produits dans la fenêtre temporelle déterminée T d'une part, et lorsque la signature mesurée correspond à celle d'un utilisateur autorisé d'autre part.The portable housing further includes means for generation of the SD unlock signal, including function is to produce the unlock signal when the activation signal SA1 and the signal SM2 measurement are produced in the time window determined T on the one hand, and when the signature measured corresponds to that of an authorized user on the other hand.

Ces moyens sont réalisés sous la forme d'un circuit de gestion comprenant une première entrée E1 pour recevoir le signal d'activation SA1 et une deuxième entrée E2 pour recevoir le signal de mesure SM2 délivré par le capteur CED. Le circuit de gestion 20, comporte en outre un microcontrôleur M1 comprenant une mémoire DB2 dans laquelle les signatures biométriques d'un ou de plusieurs utilisateurs autorisés sont mémorisées (c'est-à-dire ici l'empreinte digitale du pouce ou de l'index selon le cas, ou de tout autre doigt). Ces signatures peuvent être mémorisées sous la forme d'une matrice de données binaires. Les signatures biométriques de chaque utilisateur autorisé sont mémorisées dans des zones distinctes de la mémoire DB2 référencées par un numéro d'utilisateur. Par exemple on peut prévoir cinq zones distinctes pour mémoriser les signatures biométriques de cinq utilisateurs autorisés différents correspondant aux membres d'une même famille, à chacune desquelles est fictivement associé un numéro d'utilisateur respectivement 1, 2, 3, 4 ou 5.These means are made in the form of a circuit management system including a first entry E1 for receive the activation signal SA1 and a second input E2 to receive the measurement signal SM2 delivered by the CED sensor. The management circuit 20 includes furthermore a microcontroller M1 comprising a memory DB2 in which the biometric signatures of one or of several authorized users are memorized (i.e. here the fingerprint of the thumb or index finger as appropriate, or any other finger). These signatures can be stored in the form of a binary data matrix. The signatures biometric of each authorized user are stored in separate areas of DB2 memory referenced by a user number. For example we can provide five separate areas for storing biometric signatures of five authorized users different corresponding to the members of the same family, each of which is fictitiously associated a user number 1, 2, 3, 4 or 5 respectively.

De préférence, le signal SM2 délivré par le capteur d'empreintes digitales CED est un signal numérique. Les données fournies sur la deuxième entrée E2 de l'unité 20, sont donc directement exploitables par le microcontrôleur M1. Dans le cas contraire, il faut prévoir un convertisseur analogique/numérique.Preferably, the signal SM2 delivered by the sensor Fingerprint CED is a digital signal. The data provided on the second input E2 of the unit 20, are therefore directly exploitable by the microcontroller M1. Otherwise, you must provide an analog / digital converter.

Le microcontrôleur M1 est piloté par un programme de gestion. Lorsque les données contenues dans le signal de mesure SM2 correspondent aux données mémorisées dans l'une des cinq zones mémoires de la mémoire DB2 du micro-contrôleur M1, celui-ci délivre sur une sortie OUT un signal transmis à un circuit d'émission ER2 pour provoquer l'émission du signal de déverrouillage SD via, par exemple, une antenne ou une diode infrarouge.The microcontroller M1 is controlled by a program Management. When the data contained in the measurement signal SM2 correspond to the data stored in one of the five memory areas of the DB2 memory of the M1 microcontroller, this delivers on an OUT output a signal transmitted to a circuit ER2 emission to cause the emission of the signal of SD unlocking via, for example, an antenna or a infrared diode.

Afin de mieux illustrer la combinaison logique du signal d'activation SA1 et du signal de mesure SM2 au sein de l'unité de gestion 20, on a choisi de représenter, à la figure 3, une porte logique PL2 de type ET dont une première entrée reçoit le signal d'activation SA1 et dont une seconde entrée reçoit le signal de mesure SM2. La sortie de cette porte PL2 est connectée sur une entrée I1 du microcontrôleur M1. La présence de la porte PL2 a uniquement pour but d'illustrer l'une des conditions selon l'invention pour que le signal de déverrouillage soit émis, à savoir que le signal d'activation SA1 et le signal de mesure SM2 soient générés pendant une fenêtre temporelle T. Avec la configuration représentée, le signal de mesure SM2 délivré par le capteur CED peut être transmis sur l'entrée I1 du microcontrôleur M1 uniquement lorsque le signal d'activation SA1 est actif à l'état logique 1.In order to better illustrate the logical combination of the activation signal SA1 and measurement signal SM2 at within management unit 20, we have chosen to represent, in FIG. 3, a logic gate PL2 of ET type whose first input receives the signal SA1 activation and a second input of which receives the SM2 measurement signal. The output of this PL2 door is connected to an input I1 of the microcontroller M1. The presence of door PL2 is only intended to illustrate one of the conditions according to the invention for that the unlocking signal is emitted, namely that the activation signal SA1 and the measurement signal SM2 are generated during a time window T. With the configuration shown, the measurement signal SM2 delivered by the CED sensor can be transmitted to the input I1 of the microcontroller M1 only when the activation signal SA1 is active in logic state 1.

Cette représentation n'implique cependant aucune limitation tangible quant à la réalisation pratique de l'invention dans la mesure où les signaux SA1 et SM2 peuvent être transmis sur deux entrées distinctes du microcontrôleur M1 pour y être traités dans une opération logique de type ET. On notera que la fenêtre temporelle T, pendant laquelle le signal SA1 est maintenu à l'état actif, doit au moins être égale à la durée de la transmission des données correspondant à l'empreinte digitale d'un utilisateur par le signal de mesure SM2. Une fenêtre temporelle de 500 millisecondes est suffisante.However, this representation does not imply any tangible limitation on the practical realization of the invention insofar as the signals SA1 and SM2 can be transmitted on two separate entries of the microcontroller M1 to be treated in a AND type logical operation. Note that the window time T, during which the signal SA1 is maintained in the active state, must at least be equal to the duration of data transmission corresponding to a user's fingerprint by the signal of SM2 measurement. A 500 millisecond time window is sufficient.

Dans d'autres modes de réalisation possible de l'invention, l'objet portable comporte en outre au moins un autre moyen de mesure d'une donnée biométrique de l'utilisateur produisant un autre signal de mesure. Les moyens de génération du signal de déverrouillage SD produisent alors le signal SD lorsque le signal d'activation SA1 et tous les signaux de mesure sont produits dans la fenêtre temporelle T précitée, et lorsque la signature mesurée correspond à celle d'un utilisateur autorisé et notamment de son empreinte digitale.In other possible embodiments of the invention, the portable object further comprises at minus another means of measuring biometric data of the user producing another measurement signal. The means for generating the unlocking signal SD then produce the SD signal when the signal activation SA1 and all measurement signals are products in the aforementioned time window T, and when the signature measured corresponds to that of a authorized user and in particular of his fingerprint digital.

Une telle autre donnée biométrique de l'utilisateur peut être constituée par la pression artérielle mesurée au niveau de son doigt. Le moyen de mesure de cette donnée biométrique comprend alors un capteur de pression CPR.Such other biometric user data can consist of measured blood pressure at his finger. The means of measuring this biometric data then includes a CPR pressure.

De même, une autre donnée biométrique de l'utilisateur peut encore être constituée par la température de son doigt. Le moyen de mesure de cette donnée biométrique comprend alors un capteur de température CTP.Similarly, another biometric datum of the user can still be incorporated by the temperature of his finger. The means of measuring this biometric data then includes a PTC temperature.

La prise en compte d'une ou plusieurs de ces autres données biométriques de l'utilisateur permet de rendre plus difficile les tentatives de fraude consistant à fabriquer un doigt artificiel (par exemple en latex) qui soit une reproduction fidèle du doigt de l'utilisateur autorisé. Taking into account one or more of these others user biometric data makes it possible to make more difficult the fraud attempts consisting of make an artificial finger (for example latex) which is a faithful reproduction of the finger of the authorized user.

A la figure 3, on a schématiquement représenté une deuxième porte logique PL3 de type ET qui reçoit le signal de mesure SM3 délivré par le capteur de pression CPR sur une première entrée, et le signal d'activation SA1 sur une seconde entrée. La sortie de la porte PL3 est transmise sur une deuxième entrée I2 du microcontrôleur M1. De même on a schématiquement représenté une troisième porte logique PL4 de type ET qui reçoit le signal de mesure SM4 généré par le capteur de température CTP sur une première entrée, et le signal d'activation SA1 sur une seconde entrée. La sortie de la porte PL4 est connectée à une troisième entrée I3 du microcontrôleur M1.In Figure 3, there is schematically shown a second logic gate PL3 of type ET which receives the SM3 measurement signal from the pressure sensor CPR on a first input, and the activation signal SA1 on a second input. The exit from gate PL3 is transmitted on a second input I2 of the microcontroller M1. Likewise we have schematically represented a third logic gate PL4 of type ET which receives the measurement signal SM4 generated by the PTC temperature sensor on a first input, and the activation signal SA1 on a second input. The output of gate PL4 is connected to a third input I3 of the microcontroller M1.

Dans un mode de réalisation particulier de l'invention, le signal de déverrouillage SD comporte un code impersonnel identifiant celui des utilisateurs autorisés dont la signature biométrique a été reconnue valable. Ce code impersonnel peut tout simplement être constitué par le numéro d'utilisateur 1, 2, 3, 4 ou 5 précité. Ceci permet l'activation de fonctions de confort dans le véhicule à réception du signal SD. De telles fonctions consistent par exemple, dans le réglage de la hauteur des sièges, de la position des rétroviseurs, d'une température de consigne pour une installation de climatisation embarquée, d'une station radio, etc..., à des valeurs prédéfinies correspondant aux choix habituels de l'utilisateur concerné.In a particular embodiment of the invention, the unlocking signal SD comprises a impersonal code identifying that of users authorized whose biometric signature has been recognized valid. This impersonal code can simply be consisting of user number 1, 2, 3, 4 or 5 cited above. This allows the activation of comfort in the vehicle upon reception of the SD signal. Of such functions consist for example in the adjustment of seat height, position of rear view mirrors, a set temperature for a on-board air conditioning system, station radio, etc ..., to predefined values corresponding to the usual choices of the user concerned.

Avantageusement, on notera que ce n'est pas l'information relative à la signature biométrique de l'utilisateur qui est transmise, mais un numéro impersonnel, par exemple 1, 2, 3, 4 ou 5 dont la seule fonction est d'identifier un des utilisateurs autorisés parmi l'ensemble limité de ceux-ci. C'est cette notion qu'exprime l'adjectif "impersonnel" employé ci-dessus. Il n'y a donc aucun risque que les données relatives à la signature biométrique d'un utilisateur autorisé tombent entre les mains d'un tiers mal intentionné ayant intercepté le signal de déverrouillage SD.Advantageously, it will be noted that this is not information relating to the biometric signature of the user that is transmitted but a number impersonal, for example 1, 2, 3, 4 or 5 of which the only function is to identify an authorized user among the limited set of these. It is this notion expressed by the adjective "impersonal" used above. There is therefore no risk that the data relating to biometric signature of an authorized user fall into the hands of a malicious third party having intercepted the SD unlock signal.

Bien entendu, le signal de déverrouillage SD comporte également un code d'identification du véhicule auquel l'objet portable est associé permettant d'associer un objet portable déterminé à un unique véhicule.Of course, the unlocking signal SD also includes a vehicle identification code with which the portable object is associated allowing to associate a specific portable object with a unique vehicle.

La structure du terminal fixe par exemple constitué par la centrale de verrouillage/déverrouillage des portières du véhicule n'est pas propre à l'invention et peut donc être conforme à celles des systèmes de l'art antérieur. A tout le moins, elle est à la portée de l'homme du métier, et, pour cette raison, n'est pas décrite en détail dans le présent exposé.The structure of the fixed terminal, for example made up by the central locking / unlocking vehicle doors is not specific to the invention and can therefore conform to those of art systems prior. At the very least, it is within reach of skilled in the art, and for this reason is not described in detail in this discussion.

En outre, de façon classique, le signal de verrouillage/déverrouillage peut également comporter un code évolutif, c'est à dire un code dont la valeur change à chaque émission. On sait qu'un tel code permet de faire obstacle aux tentatives de fraude consistant à capter et enregistrer (avec des moyens électroniques adaptés) le signal de vérrouillage/déverrouillage lorsqu'il est émis de manière normale par l'utilisateur autorisé, dans le but de le reproduire ultérieurement de manière frauduleuse.In addition, conventionally, the signal locking / unlocking can also include a scalable code, i.e. a code whose value changes with each transmission. We know that such a code allows to prevent fraud attempts consisting in capture and record (with electronic means adapted) the lock / unlock signal when issued normally by the user authorized, in order to reproduce it later fraudulently.

Claims (9)

Système de sécurité, notamment pour véhicule automobile comprenant un terminal fixe (102) et un objet portable (103) pouvant délivrer au terminal fixe un signal de verrouillage/déverrouillage (SD) d'une unité fonctionnelle telle qu'un véhicule,
   caractérisé en ce que l'objet portable (103) comporte: des moyens de détection d'une intervention active d'un utilisateur produisant un signal d'activation (SA1); un moyen de mesure d'une signature biométrique de l'utilisateur produisant un premier signal de mesure (SM2) ; des moyens (20) de génération du signal de verrouillage/déverrouillage (SD) produisant le signal de verrouillage/déverrouillage (SD) lorsque au moins le signal d'activation (SA1) et le signal de mesure (SM2) sont produits dans une fenêtre temporelle déterminée (T) d'une part, et lorsque la signature biométrique mesurée correspond à celle d'un utilisateur autorisé d'autre part. Security system, in particular for a motor vehicle comprising a fixed terminal (102) and a portable object (103) capable of delivering to the fixed terminal a locking / unlocking signal (SD) of a functional unit such as a vehicle,
characterized in that the portable object (103) comprises: means for detecting an active intervention by a user producing an activation signal (SA1); means for measuring a biometric signature of the user producing a first measurement signal (SM2); means (20) for generating the locking / unlocking signal (SD) producing the locking / unlocking signal (SD) when at least the activation signal (SA1) and the measurement signal (SM2) are produced in a window on the one hand, and when the biometric signature measured corresponds to that of an authorized user on the other. Système selon la revendication 1, caractérisé en ce que les moyens de détection d'une intervention active de l'utilisateur comprennent un interrupteur (SW) de type bouton poussoir.System according to claim 1, characterized in what the intervention detection means active user include switch (SW) push button type. Système selon la revendication 1, caractérisé en ce que les moyens de détection d'une intervention active de l'utilisateur comprennent un interrupteur de type bouton poussoir (SW) et un moyen de temporisation (MS1) pour maintenir le signal d'activation (SA1) à l'état actif pendant la fenêtre temporelle déterminée (T) après la fermeture de l'interrupteur (SW).System according to claim 1, characterized in what the intervention detection means active user include a switch push button type (SW) and time delay means (MS1) to maintain the activation signal (SA1) at the active state during the determined time window (T) after closing the switch (SW). Système selon l'une des revendications précédentes caractérisé en ce que le moyen de mesure d'une signature biométrique de l'utilisateur comprend un capteur d'empreinte digitale (CED).System according to one of the claims previous characterized in that the measuring means a biometric signature of the user includes a fingerprint sensor (CED). Système selon l'une des revendications précédentes, caractérisé en ce que les moyens (20) de génération du signal de verrouillage/déverrouillage comportent: une première entrée (E1) pour recevoir le signal d'activation (SA1); une seconde entrée (E2) pour recevoir le signal de mesure (SM2); un microcontrôleur (M1) piloté par un programme de gestion et comprenant une mémoire dans laquelle les signatures biométriques d'un ou plusieurs utilisateurs autorisé(s) sont mémorisées; un circuit d'émission (ER2) du signal de déverrouillage (SD). System according to one of the preceding claims, characterized in that the means (20) for generating the locking / unlocking signal comprise: a first input (E1) for receiving the activation signal (SA1); a second input (E2) for receiving the measurement signal (SM2); a microcontroller (M1) controlled by a management program and comprising a memory in which the biometric signatures of one or more authorized users are stored; a circuit for transmitting (ER2) the unlocking signal (SD). Système selon l'une des revendications précédentes, caractérisé en ce que l'objet portable comporte en outre au moins un autre moyen de mesure d'une donnée biométrique de l'utilisateur produisant un autre signal de mesure (SM3, SM4), et en ce que les moyens de génération du signal de verrouillage/déverrouillage (SD) produisent le signal de verrouillage/déverrouillage (SD) lorsque le signal d'activation (SA1) ainsi que tous les signaux de mesure sont produits dans la fenêtre temporelle déterminée (T) d'une part, et lorsque la signature mesurée correspond à celle d'un utilisateur autorisé d'autre part.System according to one of the claims previous, characterized in that the portable object further comprises at least one other measuring means of a biometric data of the user producing a other measurement signal (SM3, SM4), and that the signal generation means lock / unlock (SD) output signal lock / unlock (SD) when the signal activation (SA1) as well as all measurement signals are produced in the determined time window (T) on the one hand, and when the measured signature corresponds to that of an authorized user on the other hand. Système selon la revendication 6, caractérisé en ce que un des autres moyens de mesure d'une donnée biométrique comprend un capteur de pression (CPR).System according to claim 6, characterized in what one of the other ways of measuring data biometric includes a pressure sensor (CPR). Système selon la revendication 6 ou selon la revendication 7, caractérisé en ce que un des autres moyens de mesure d'une donnée biométrique comprend un capteur de température (CTP).System according to claim 6 or according to claim 7, characterized in that one of the others means of measuring biometric data includes a temperature sensor (PTC). Système selon l'une des revendications précédentes caractérisé en ce que le signal de déverrouillage comporte un code impersonnel identifiant l'utilisateur autorisé dont la signature a été mesurée afin de permettre l'activation de fonctions de confort dans l'unité fonctionnelle.System according to one of the claims previous characterized in that the signal of unlocking includes an impersonal code identifying authorized user whose signature has been measured to enable the activation of comfort functions in the functional unit.
EP98403184A 1997-12-24 1998-12-16 Safety device, in particular for motor vehicle Expired - Lifetime EP0926305B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9716467A FR2772958B1 (en) 1997-12-24 1997-12-24 SECURITY SYSTEM, ESPECIALLY FOR A MOTOR VEHICLE
FR9716467 1997-12-24

Publications (2)

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EP0926305A1 true EP0926305A1 (en) 1999-06-30
EP0926305B1 EP0926305B1 (en) 2004-04-28

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EP98403184A Expired - Lifetime EP0926305B1 (en) 1997-12-24 1998-12-16 Safety device, in particular for motor vehicle

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US (1) US6164403A (en)
EP (1) EP0926305B1 (en)
DE (1) DE69823470T2 (en)
FR (1) FR2772958B1 (en)

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CN101546445B (en) * 2008-03-26 2011-05-25 比亚迪股份有限公司 Keyless-entry antitheft security system
WO2012110888A1 (en) * 2011-02-18 2012-08-23 TORE, Etholm Idsoe Key fob with protected biometric sensor
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Also Published As

Publication number Publication date
FR2772958A1 (en) 1999-06-25
US6164403A (en) 2000-12-26
DE69823470D1 (en) 2004-06-03
EP0926305B1 (en) 2004-04-28
DE69823470T2 (en) 2004-09-09
FR2772958B1 (en) 2000-05-26

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