EP0179328B1 - Clé de sécurité et lecteur codé pour systèmes de fermeture électroniques - Google Patents

Clé de sécurité et lecteur codé pour systèmes de fermeture électroniques Download PDF

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Publication number
EP0179328B1
EP0179328B1 EP85112554A EP85112554A EP0179328B1 EP 0179328 B1 EP0179328 B1 EP 0179328B1 EP 85112554 A EP85112554 A EP 85112554A EP 85112554 A EP85112554 A EP 85112554A EP 0179328 B1 EP0179328 B1 EP 0179328B1
Authority
EP
European Patent Office
Prior art keywords
key
code
carrier
contacts
conducting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP85112554A
Other languages
German (de)
English (en)
Other versions
EP0179328A3 (en
EP0179328A2 (fr
Inventor
Klaus Dr. Meister
Pierre Meyers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT85112554T priority Critical patent/ATE71426T1/de
Publication of EP0179328A2 publication Critical patent/EP0179328A2/fr
Publication of EP0179328A3 publication Critical patent/EP0179328A3/de
Application granted granted Critical
Publication of EP0179328B1 publication Critical patent/EP0179328B1/fr
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
    • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
    • G07C9/00706—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with conductive components, e.g. pins, wires, metallic strips

Definitions

  • the invention relates to a key or a key card - hereinafter referred to exclusively as a key - as an element which is provided with a fixed, electrically readable code in the manufacturing process and is used as an information carrier in electronic locking systems.
  • the invention also relates to the reader of the locking system, which is used to remove the code information stored in the key, which is passed on to the electronics.
  • the vacancies of the insulating layer can be filled with a further conductive layer, generated by covering the vacancies with insulating pressure or by omitting the isolating pressure, as a result of which the coding is visually obscured by an observer.
  • the advantage of a key coded in this way lies in the simplicity of manufacturing both the key and the reading device.
  • the reading device only has to have a contact set in order to receive a signal that can be used directly for signal-processing electronics, the amplifiers required in other information storage methods, Discriminators, etc. can be saved.
  • the disadvantage is that simple means - e.g. a resistance measuring device - it is easily possible to measure the optically disguised code of a key and to transfer the code to any other key, i.e. to copy the key.
  • the invention has for its object to provide a system consisting of key, reader and electronics, in which the key is formed by coating with conductive and insulating layers and in which code elements occur both in the key and in the reader with the aim of recognizing or measuring the codes used and also the preparation of duplicate keys very difficult and difficult to design, so that the key can be described as highly copy-protected.
  • the measures characterized in claim 5 introduce further additional code elements in keys and electronics. Since the coding of the electronics cannot be measured from the outside of the door, a duplicate key must be an exact replica of the original key, which has been made even more difficult by the resistance coding of the key.
  • the measures characterized in claim 6 ensure that the potential supply contact 31 can only come into contact with conductive areas of the carrier when the read contacts 25, 26, 27, 28 have run onto the insulating layer 10. As long as these read contacts run over the conductive edge region 21 of the carrier, no potential supply may take place via the contact 31, since otherwise undesired passage information would be passed on to the electronics.
  • Fig. 1 shows the front part of a key, which is completely inserted into a reader for reading the stored key code information.
  • a base insulating layer 2 is first applied in a covering manner. Electrically conductive strips 3 are attached to this, which have contact with the carrier 1 or its conductive coating. In addition, conductive strips 4, 5, 6, 7 are attached. These have no contact with each other or with the carrier 1.
  • Another insulating layer 10 is applied over the conductive strips 3, 4, 5, 6, 7, which contains vacancies 22 in a matrix-like arrangement.
  • the spaces 22 are divided into rows and columns: in the present example 6 rows with the designation 15-20 and four columns with the designation 11-14.
  • a strip 3 and at least one strip 4, 5, 6, 7 pass through each empty space 22.
  • the strips are arranged such that there is a continuous strip 3 in each column, which is electrically connected to the carrier 1 or its conductive coating, and in each empty space at least one further strip 4, 5, 6, 7, which is not connected to the Carrier is connected and can change the column in any way.
  • strip 4 from column 11 changes to column 12
  • strip 5 from column 12 changes to column 11, and strips 6 and 7 remain in columns 13 and 14, respectively.
  • the key is added with an additional one Provide resistance code.
  • the strips 3, 4, 5, 6, 7, resistors 8, 9 are inserted between the empty spaces, specifically in terms of number, position and resistance value.
  • the space coding - i.e. the application of partial insulation to the vacancies 22 - is carried out before the application of the insulating layer 10, because in this way the required accuracy when applying the partial insulation is lower.
  • the contact arrangement of the reading device is shown in more detail in FIG. 2.
  • the read contacts 25, 26, 27, 28 are individually connected to the potential supply contact 31 via resistors 38, 39, 40, 41 and a battery 30.
  • This circuit is switched on / off by the key according to the strip and space code of the key in connection with the contact code of the coding contacts 32-36 of the reader.
  • the read contacts 25, 26, 27, 28 serve to remove the stored key information by measuring each individual code element location 22 for continuity or interruption against the potential supply contact 31.
  • the potential supply contact 31 is so far set back with respect to the reading contacts 25, 26, 27, 28 that it only comes into contact with the carrier 1 or with its open edge strip 21 at the beginning of the key insertion if the reading contacts are already over the conductive edge strip 21 have run up onto the insulating layer 10. This arrangement is necessary because otherwise undesired passage information would be forwarded to the electronics.
  • an electrical connection of the reading contacts 25, 26, 27, 28 to the potential supply contact 31 can only be made by code element locations which have a connection to the carrier 1 by coding.
  • code element locations which have a connection to the carrier 1 by coding.
  • these are all code element locations in which the conductive strip 3 has not been insulated.
  • These may also be code element locations in which the strip 3 has been isolated, but not at least one of the conductive strips 4, 5, 6, 7, provided that this code element location is supplied with the potential of the contact 31 by further coding contacts 33-36 via another code element location becomes.
  • the reader contains different types of coding contacts 32 - 36:
  • the coding contact 32 is not electrically connected and is therefore only a blind contact.
  • the coding contacts 33, 34 are electrically connected to one another, but have no connection to the potential supply contact 31.
  • the coding contacts 35, 36 are electrically connected to the potential supply contact 31.
  • the quantity and arrangement of the coding contacts 32-36 are determined according to a random pattern. These contacts are thus introduced into the system as additional code elements.
  • This information is generated depending on the bar code, blank code and code of the coding contacts.
  • the comparators with the resistors for setting the threshold values are shown in FIG.
  • the signal processing electronics 37 is connected to the resistors 38, 39, 40, 41.
  • the electronics 37 is designed so that it can only process bivalent signals.
  • the associated electronics are comparators 42, 43, 44, 45 upstream. These comparators are randomly set during manufacture by resistors 46-53 to threshold values between the voltage O and the operating voltage. Determining which potential O or 1 of the electronics is reported by the comparators are the ratios of the threshold value setting resistors 46-53 to the resistors 8, 9 of the key together with the resistors 38-41 of the reader.
  • the threshold value setting resistors 46 - 53 cannot be measured from the outside of the door. As a result of these threshold value setting resistors, further code elements are introduced into the system that elude any measurement from the outside of the door. Therefore, in addition to stripe and space codes, each duplicate key must also precisely reproduce the code of the key, which is made up of resistors.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Claims (6)

  1. Le dispositif se compose d'une clé physique/carte clé, d'un appareil de lecture de code, et d'un système électronique permettant d'exploiter des systèmes de fermeture électroniques par comparaison, au moyen de comparateurs numériques, de l'information code clé programmée sur la clé/ carte clé avec l'information de code serrure mémorisée dans le système électronique. Chaque clé/carte clé possède des informations code clé attribuées de façon fixe sur un support (1) sous forme de dessins appliqués de préférence sur un seul côté du support en couches conductrices d'électricité et en couches isolantes. Dans une couche isolante (10) - couvrant au moins en grande partie un côté du support - appliquée directement sur le support conducteur d'électricité, ou sur un support rendu conducteur grâce à une couche conductrice, se trouvent des espaces libres (11) faisant office d'emplacements de codage disposés sous forme de matrice, dont le codage est effectué par application ou non application d'une couche isolante sur les emplacements de codage, et dont le codage représente une information électrique à deux valeurs pour le système électronique.
    L'appareil de lecture lit, lors de l'introduction de la clé/ carte clé dans l'appareil de lecture l'information électrique à deux valeurs de la clé/carte clé au moyen des contacts de lecture (25, 26, 27, 28) par rapport au support conducteur ou à sa couche conductrice et la communique au système électronique.

    Caractérisé par le fait

    que la couche isolante (10) présentant des espaces libres (22) disposés en forme de matrice est placée sur une couche isolante de base continue (2),
    que des bandes conductrices d'électricité (3) et des bandes supplémentaires (4, 5, 6, 7) se trouvent entre la couche isolante (10) et la couche isolante de base (2),
    qu'une bande (3) et au moins une des bandes supplémentaires (4, 5, 6, 7) conductrices passent dans chaque espace libre (22), que les bandes (3) sont reliées électriquement au support (1) ou à la couche conductrice du support,
    que les bandes supplémentaires (4, 5, 6, 7) en sont isolées,
    qu'une couche code isolante est appliquée dans les espaces libres (22) de façon aléatoire lors de la fabrication, et couvre soit la bande (3), soit une ou plusieurs des bandes supplémentaires (4, 5, 6, 7), soit enfin tout l'espace libre (22),
    que tous les espaces libres (22) ou les emplacements d'éléments de code (22) sont recouverts sur toute leur surface d'une couche conductrice opaque,
    et que des contacts code supplémentaires (35-36) sont montés dans le dispositif d'introduction de la clé de façon aléatoire, en ce qui concerne la quantité et la disposition, dans l'appareil de lecture, à côté des contacts de lecture (25, 26, 27, 28), ces derniers lisant l'information utile. Tous les contacts code (35-36) sont reliés électriquement avec le support (1) ou à la couche conductrice du support grâce à un contact d'alimentation de potentiel (31), ce potentiel alimentant tous les emplacements d'éléments de code (22) de la clé qui entrent en contact avec ces contacts code (35, 36).
  2. Dispositif selon revendication 1,

    caractérisé par le fait

    que différents dessins géométriques des bandes conductrices supplémentaires (4, 5, 6, 7) sont utilisés lors de la fabrication des clés /cartes clé.
  3. Dispositif selon revendication 1,

    caractérisé par le fait

    que des contacts de codage (32) sont montés de façon aléatoire, en quantité et en position, en tant que contacts fictifs lors de la fabrication, ces derniers n'ayant aucune liaison avec le contact d'alimentation de potentiel (31) ni avec d'autres contacts de codage (33 à 36).
  4. Dispositif selon les revendications 1 et 3,

    caractérisé par le fait

    que, à la fabrication, un nombre aléatoire de contacts code (33, 34), quant à la quantité et à la disposition, présentent un contact électrique entre eux, mais n'ont pas de contact électrique avec le contact d'alimentation de potentiel (31).
  5. Dispositif selon les revendications 1 et 2

    caractérisé par le fait

    que, à la fabrication, des résistances électriques de différentes valeurs de résistance sont insérées dans les bandes supplémentaires (4, 5, 6, 7) de la clé/carte clé entre les emplacements vides de façon aléatoire en nombre quelconque et dans une position quelconque et
    que des comparateurs sont commutés en amont du système électronique de traitement des signaux, dont le seuil de commutation est réglé de façon différente aléatoirement lors de la fabrication des systèmes électroniques.
  6. Dispositif selon les revendications 1, 3 et 4,

    caractérisé par le fait

    que le contact d'alimentation de potentiel (31) est monté suffisamment loin des contacts de lecture (25, 26, 27, 28) de façon à ce que, au commencement de l'introduction de la clé, une connexion du support (1) ou de son revêtement conducteur (31) n'intervienne que lorsque les contacts de lecture (25, 26, 27, 28) sont déjà passés sur une bande latérale non isolée (21) du support (1) sur la couche isolante (10).
EP85112554A 1984-10-09 1985-10-04 Clé de sécurité et lecteur codé pour systèmes de fermeture électroniques Expired - Lifetime EP0179328B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85112554T ATE71426T1 (de) 1984-10-09 1985-10-04 Kopiergeschuetzter schluessel und codiertes lesegeraet fuer elektronische schliess-systeme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3437030 1984-10-09
DE19843437030 DE3437030A1 (de) 1984-10-09 1984-10-09 Kopiergeschuetzter schluessel und codiertes lesegeraet fuer elektronische schliess-systeme

Publications (3)

Publication Number Publication Date
EP0179328A2 EP0179328A2 (fr) 1986-04-30
EP0179328A3 EP0179328A3 (en) 1988-06-01
EP0179328B1 true EP0179328B1 (fr) 1992-01-08

Family

ID=6247479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112554A Expired - Lifetime EP0179328B1 (fr) 1984-10-09 1985-10-04 Clé de sécurité et lecteur codé pour systèmes de fermeture électroniques

Country Status (5)

Country Link
US (1) US4706084A (fr)
EP (1) EP0179328B1 (fr)
JP (1) JPH0645980B2 (fr)
AT (1) ATE71426T1 (fr)
DE (2) DE3437030A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3437030A1 (de) * 1984-10-09 1986-04-10 Klaus Dr. 8022 Grünwald Meister Kopiergeschuetzter schluessel und codiertes lesegeraet fuer elektronische schliess-systeme
DE3630456A1 (de) * 1986-09-06 1988-03-17 Zeiss Ikon Ag Verfahren und vorrichtung zur kontaktlosen informationsuebertragung
GB2250052A (en) * 1990-11-24 1992-05-27 Group Sales Limited Electronic lock and key systems
AU5255396A (en) * 1995-03-16 1996-10-02 Medeco Security Locks, Inc. Universal apparatus for use with electronic and/or mechanical access control devices
US10861264B2 (en) * 2018-11-29 2020-12-08 Sensormatic Electronics, LLC Systems and methods of lock and powered load enumeration and secure activation

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR684160A (fr) * 1928-11-03 1930-06-23 Procédé d'évaluation d'ensembles superficiels portant des points numérateurs ou indicateurs, de préférence de cartes d'enregistrement, etc.
US1997157A (en) * 1929-10-31 1935-04-09 Ibm Card controlled machine
US2171556A (en) * 1933-08-21 1939-09-05 Harold H Higginbottom Record sheet for statistical purposes
US2473664A (en) * 1946-05-10 1949-06-21 Joseph E Taylor Electric locking device
US2817824A (en) * 1952-11-21 1957-12-24 Rca Corp Card switching device
US3403380A (en) * 1965-03-01 1968-09-24 Emhart Corp Key card operated switch and system
US3308253A (en) * 1965-03-25 1967-03-07 Ibm Diaphragm switch having a diaphragm supported on an incompressible layer and an elastomer overlaying the diaphragm
US3686659A (en) * 1970-01-05 1972-08-22 Dasy Int Sa Electronic locking device
US3673467A (en) * 1970-10-28 1972-06-27 Eaton Corp Resistively-coded security system
GB1428734A (en) * 1973-04-11 1976-03-17 Matsumoto S Identification card
DE2325548A1 (de) * 1973-05-19 1974-12-05 Heinz Bisschopinck Vorrichtung zum programmieren von binaeren codezeichen auf datentraeger
DE2851396A1 (de) * 1978-11-28 1980-06-04 Kadex Inc Elektronische schliessvorrichtung
ATE6802T1 (de) * 1980-07-01 1984-04-15 Scovill Inc Elektronisches sicherheitssystem.
DE3437030A1 (de) * 1984-10-09 1986-04-10 Klaus Dr. 8022 Grünwald Meister Kopiergeschuetzter schluessel und codiertes lesegeraet fuer elektronische schliess-systeme

Also Published As

Publication number Publication date
EP0179328A3 (en) 1988-06-01
JPS6192274A (ja) 1986-05-10
US4706084A (en) 1987-11-10
EP0179328A2 (fr) 1986-04-30
JPH0645980B2 (ja) 1994-06-15
ATE71426T1 (de) 1992-01-15
DE3437030A1 (de) 1986-04-10
DE3585131D1 (de) 1992-02-20

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