EP1085481B1 - Un émetteur de télécommande - Google Patents

Un émetteur de télécommande Download PDF

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Publication number
EP1085481B1
EP1085481B1 EP00650129A EP00650129A EP1085481B1 EP 1085481 B1 EP1085481 B1 EP 1085481B1 EP 00650129 A EP00650129 A EP 00650129A EP 00650129 A EP00650129 A EP 00650129A EP 1085481 B1 EP1085481 B1 EP 1085481B1
Authority
EP
European Patent Office
Prior art keywords
code
transmitter
remote control
valid
control group
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
EP00650129A
Other languages
German (de)
English (en)
Other versions
EP1085481A2 (fr
EP1085481A3 (fr
Inventor
Donal Moriarty
Thomas O'connell
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.)
FAAC Electronics Ltd
Original Assignee
FAAC Electronics Ltd
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 FAAC Electronics Ltd filed Critical FAAC Electronics Ltd
Publication of EP1085481A2 publication Critical patent/EP1085481A2/fr
Publication of EP1085481A3 publication Critical patent/EP1085481A3/fr
Application granted granted Critical
Publication of EP1085481B1 publication Critical patent/EP1085481B1/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
    • G07C9/00182—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
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/16—Electric signal transmission systems in which transmission is by pulses
    • G08C19/28—Electric signal transmission systems in which transmission is by pulses using pulse code

Definitions

  • the invention relates to a transmitter for a remote control group for a shared function such as opening a garage door. It also relates to a receiver for such a group and to a group of a receiver and a plurality of transmitters.
  • US5661804 describes a trainable transceiver for learning and transmitting an activation signal that includes a rolling code.
  • the valid code is variable according to pre-set criteria.
  • the valid code comprises a hopping index.
  • the valid code comprises a combination of a fixed discrimination value known to the receiver and a hopping index.
  • the slave transmitter comprises means for generating the encryption key by processing a manufacturer-set key with a site code which is unique to the group.
  • the slave transmitter comprises means for receiving the site code in an encrypted teaching radiation signal and for decrypting said signal to determine the site code using a teaching decryption key.
  • the slave transmitter comprises means for storing a transmitter-specific serial number and for transmitting the serial number together with the encrypted code.
  • the master transmitter processor comprises:
  • the receiver processor comprises means for:
  • the receiver processor comprises means for determining if the serial number is valid by:
  • FIG. 1 is a schematic diagram of a remote control group transmitter of the invention.
  • remote control group transmitter 1 comprises:
  • the memory capacity is adequate for four sets of data, as described above. This allows the transmitter 1 to be used for up to four different remote control groups. However, for clarity, operation for only one group is described below.
  • the microprocessor 2 is programmed to recognise a switch 7 depression as a transmit instruction. Simultaneous depression of two or more switches in various pre-set configurations are interpreted as user instructions for auxiliary functions such as a teach mode or randomisation of codes. Programming of the microprocessor 2 at manufacture determines whether the transmitter is a master or a slave. Slaves do not have a teach mode. The transmitter 1 is a slave.
  • the transmitter 1 is part of a remote control group also comprising a receiver and a master transmitter.
  • the latter is used for teaching both the receiver and the transmitters 1. It has the same hardware configuration as the transmitter 1, but is additionally programmed with a teach mode.
  • the remote control group is given a unique site code by the installer and the master transmitter teaches the site code to the receiver and to the transmitters 1. This effectively empowers the installer to set the manner in which the remote control group operates from a security viewpoint.
  • Each master transmitter is pre-programmed at manufacture with a unique (to it) site code. Therefore the installer may use the pre-programmed site code of a master transmitter as that of the group. Alternatively, he may change it by randomising the pre-set value.
  • Each new transmitter stores the following after manufacture:
  • the master transmitter teaches the site code to a (slave) transmitter 1 using a teaching encryption key.
  • the transmitter 1 decrypts it using a teaching decryption key.
  • the transmitter 1 uses the site code to generate the encryption key for use in sending signals to the receiver for control of the shared group function. After it is used to generate the encryption key, it is not necessarily stored as it is not required again.
  • the encryption key is 64 bits long.
  • the master transmitter also teaches a discrimination value to the transmitter 1. This is an agreed value that enables the receiver to determine that it has correctly decrypted the transmission. It could, for example, be part of the site code or the serial number or any other agreed number.
  • the encryption key could alternatively be generated by only the master transmitter and taught to the receiver and the transmitters 1. However this suffers from the disadvantage of involving transmission of the encryption key.
  • the microcontroller encrypts the initial hopping index and the discrimination value with the encryption key to provide a valid encrypted code.
  • the (unencrypted) serial number and the encrypted code are transmitted, and are received by the receiver.
  • the receiver decrypts the code using its stored decryption key to determine the discrimination value and the initial hopping index.
  • the receiver checks the (decrypted) discrimination value and, if valid, it stores the serial number and the initial hopping index.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)
  • Lock And Its Accessories (AREA)
  • Telephone Function (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Claims (10)

  1. Un groupe de commande à distance pour un site, le groupe comprenant :
    au moins un émetteur esclave comprenant un dispositif d'émission, un bouton d'émission utilisateur, un processeur, un récepteur de rayonnement et
    une mémoire,
    un émetteur maître d'enseignement de l'émetteur esclave, l'émetteur maître comprenant une mémoire, un processeur et un dispositif d'émission, et
    un récepteur comprenant une mémoire, une interface vers une fonction partagée et un processeur comprenant un moyen de commande de la fonction partagée par l'intermédiaire de ladite interface,
    où chaque processeur d'émetteur esclave comprend un moyen de chiffrement d'un code valide avec une clé de chiffrement de façon à générer un code chiffré, et de direction de l'émission du code chiffré, et
    où le processeur récepteur comprend un moyen de déchiffrement d'un code chiffré reçu de façon à générer un code déchiffré, et un moyen de détermination si le code déchiffré est valide,
    caractérisé en ce que,
    la clé de chiffrement utilisée par chaque processeur émetteur esclave pour chiffrer le code valide est associée de manière unique au groupe de commande à distance, et chaque émetteur esclave comprend un moyen d'apprentissage de la clé de chiffrement en réponse à un signal de rayonnement d'enseignement transmis par l'émetteur maître,
    le processeur émetteur maître comprend un moyen d'enseignement de la clé de chiffrement à l'émetteur esclave et au récepteur, et
    le processeur récepteur comprend un moyen de mise en mémoire d'une clé de déchiffrement associée de manière unique au groupe de commande à distance et d'utilisation de ladite clé de déchiffrement pour déchiffrer un code chiffré reçu.
  2. Un groupe de commande à distance selon la Revendication 1, où le code valide est variable en fonction de critères prédéfinis.
  3. Un groupe de commande à distance selon la Revendication 2, où le code valide comprend un indice de saut.
  4. Un groupe de commande à distance selon la Revendication 2 ou 3, où le code valide comprend une combinaison d'une valeur de discrimination fixe connue du récepteur et d'un indice de saut.
  5. Un groupe de commande à distance selon la Revendication 1, où l'émetteur esclave comprend un moyen de génération de la clé de chiffrement par le traitement d'une clé définie par le fabricant avec un code de site qui est unique au groupe.
  6. Un groupe de commande à distance selon la Revendication 5, où l'émetteur esclave comprend un moyen de réception du code de site dans un signal de rayonnement d'enseignement chiffré et de déchiffrement dudit signal de façon à déterminer le code de site au moyen d'une clé de déchiffrement d'enseignement.
  7. Un groupe de commande à distance selon l'une quelconque des Revendications précédentes, où l'émetteur esclave comprend un moyen de mise en mémoire d'un numéro de série spécifique à l'émetteur et de transmission du numéro de série conjointement avec le code chiffré.
  8. Un groupe de commande à distance selon l'une quelconque des Revendications précédentes, où le processeur émetteur maître comprend :
    un moyen de mise en mémoire d'un code de site qui est unique au groupe de commande à distance,
    un moyen de chiffrement du code de site avec une clé de chiffrement d'enseignement destinée à un enseignement, et
    un moyen de direction de l'émission du code de site chiffré dans un signal de rayonnement d'enseignement.
  9. Un groupe de commande à distance selon l'une quelconque des Revendications 4 à 8, où le processeur récepteur comprend un moyen :
    d'identification d'un numéro de série d'émetteur dans une transmission reçue et de détermination s'il est valide,
    d'identification d'un indice de saut et d'une valeur de discrimination dans le code déchiffré, et
    de détermination si la valeur de discrimination et l'indice de saut sont valides.
  10. Un groupe de commande à distance selon la Revendication 9, où le processeur récepteur comprend un moyen de détermination si le numéro de série est valide par :
    la comparaison du numéro de série à une liste conservée en mémoire de numéros de série valides,
    la détermination que le numéro de série est valide s'il est identique à un numéro de série valide conservé en mémoire ou s'il reçoit ultérieurement un nouveau code chiffré contenant le même numéro de série et un indice de saut valide.
EP00650129A 1999-09-13 2000-09-13 Un émetteur de télécommande Expired - Lifetime EP1085481B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE990766 1999-09-13
IE990766 1999-09-13

Publications (3)

Publication Number Publication Date
EP1085481A2 EP1085481A2 (fr) 2001-03-21
EP1085481A3 EP1085481A3 (fr) 2008-05-28
EP1085481B1 true EP1085481B1 (fr) 2012-02-08

Family

ID=11042121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00650129A Expired - Lifetime EP1085481B1 (fr) 1999-09-13 2000-09-13 Un émetteur de télécommande

Country Status (6)

Country Link
EP (1) EP1085481B1 (fr)
AT (1) ATE545122T1 (fr)
DK (1) DK1085481T3 (fr)
ES (1) ES2382778T3 (fr)
IE (2) IE20000728A1 (fr)
PT (1) PT1085481E (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837939B1 (fr) 2002-03-26 2004-09-17 Somfy Procede de reprogrammation d'objets bidirectionnels
FR2842376B1 (fr) * 2002-07-10 2004-09-24 Somfy Procede de communication selective entre objets
FR2843463B1 (fr) * 2002-08-06 2005-03-11 Somfy Procede d'appariement entre un emetteur d'ordres et un recepteur d'ordres pilotant un equipement comportant un element mobile
FR2869134B1 (fr) 2004-04-16 2008-10-03 Somfy Soc Par Actions Simplifiee Procede de transmission d'informations entre objets bidirectionnels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69400859T2 (de) 1993-11-01 1997-03-27 Phisilog Research Ltd Sender für eine Gruppe von Fernbedienungsvorrichtungen
US5767784A (en) * 1994-06-10 1998-06-16 Delco Electronics Corporation Initialization method for keyless entry system
BR9606663A (pt) * 1995-05-17 1997-09-16 Chamberlain Group Inc Transmissor para enviar um sinal criptografado para controlar um atuador receptor para receber um sinal criptografado de um transmissor e para gerar um sinal de atuação e receptor para receber um sinal de frequência de rádio criptografado de um transmissor e para gerar um sinal de atuação
US5661804A (en) 1995-06-27 1997-08-26 Prince Corporation Trainable transceiver capable of learning variable codes
TW302588B (en) * 1996-03-05 1997-04-11 Microchip Tech Inc Method and apparatus for electronic encoding and decoding

Also Published As

Publication number Publication date
IE20000728A1 (en) 2001-04-04
DK1085481T3 (da) 2012-05-14
ES2382778T3 (es) 2012-06-13
ATE545122T1 (de) 2012-02-15
EP1085481A2 (fr) 2001-03-21
IES20000729A2 (en) 2001-04-04
EP1085481A3 (fr) 2008-05-28
PT1085481E (pt) 2012-04-13

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