EP1085481B1 - Ein Fernsteuersender - Google Patents

Ein Fernsteuersender 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
English (en)
French (fr)
Other versions
EP1085481A3 (de
EP1085481A2 (de
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/de
Publication of EP1085481A3 publication Critical patent/EP1085481A3/de
Application granted granted Critical
Publication of EP1085481B1 publication Critical patent/EP1085481B1/de
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)
  • Liquid Developers In Electrophotography (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Telephone Function (AREA)
  • Lock And Its Accessories (AREA)

Claims (10)

  1. Fernsteuergruppe für einen Ort, wobei die Gruppe Folgendes umfasst:
    wenigstens einen Slave-Sender, der ein Sendegerät, eine Benutzersendetaste, einen Prozessor, einen Strahlungsempfänger und einen Speicher umfasst,
    einen Master-Sender zum Anlernen des Slave-Senders, wobei der Master-Sender einen Speicher, einen Prozessor und ein Sendegerät umfasst, und
    einen Empfänger, der einen Speicher, eine Schnittstelle zu einer gemeinsamen Funktion und einen Prozessor mit Mitteln zum Steuern der gemeinsamen Funktion über die genannte Schnittstelle umfasst,
    wobei jeder Slave-Sender-Prozessor Mittel zum Verschlüsseln eines gültigen Codes mit einem Verschlüsselungsschlüssel zum Erzeugen eines verschlüsselten Codes und zum Leiten des Sendens des verschlüsselten Codes umfasst, und
    wobei der Empfängerprozessor Mittel zum Entschlüsseln eines empfangenen verschlüsselten Codes zum Erzeugen eines entschlüsselten Codes und zum Ermitteln umfasst, ob der entschlüsselte Code gültig ist,
    dadurch gekennzeichnet, dass
    der von jedem Slave-Sender-Prozessor zum Verschlüsseln des gültigen Codes verwendete Verschlüsselungsschlüssel eindeutig der Fernsteuergruppe zugeordnet ist und jeder Slave-Sender Mittel zum Erlernen des Verschlüsselungsschlüssels als Reaktion auf ein von dem Master-Sender gesendetes Anlern-Strahlungssignal umfasst;
    der Master-Sender-Prozessor Mittel umfasst, um dem Slave-Sender und dem Empfänger den Verschlüsselungsschlüssel anzulernen; und
    der Empfängerprozessor Mittel zum Speichern eines eindeutig der Fernsteuergruppe zugeordneten Entschlüsselungsschlüssels und zum Verwenden des genannten Entschlüsselungsschlüssels zum Entschlüsseln eines empfangenen verschlüsselten Codes umfasst.
  2. Fernsteuergruppe nach Anspruch 1, wobei der gültige Code gemäß voreingestellten Kriterien variabel ist.
  3. Fernsteuergruppe nach Anspruch 2, wobei der gültige Code einen Hopping-Index umfasst.
  4. Fernsteuergruppe nach Anspruch 2 oder 3, wobei der gültige Code eine Kombination aus einem dem Empfänger bekannten festen Diskriminanzwert und einem Hopping-Index umfasst.
  5. Fernsteuergruppe nach Anspruch 1, wobei der Slave-Sender Mittel zum Erzeugen des Verschlüsselungsschlüssels durch Verarbeiten eines vom Hersteller eingestellten Schlüssels mit einem Ortscode umfasst, der der Gruppe eindeutig zugeordnet ist.
  6. Fernsteuergruppe nach Anspruch 5, wobei der Slave-Sender Mittel zum Empfangen des Ortscodes in einem verschlüsselten Anlern-Strahlungssignal und zum Entschlüsseln des genannten Signals zum Ermitteln des Ortscodes mit einem Anlern-Entschlüsselungsschlüssel umfasst.
  7. Fernsteuergruppe nach einem der vorherigen Ansprüche, wobei der Slave-Sender Mittel zum Speichern einer senderspezifischen Seriennummer und zum Senden der Seriennummer zusammen mit dem verschlüsselten Code umfasst.
  8. Fernsteuergruppe nach einem der vorherigen Ansprüche, wobei der Master-Sender-Prozessor Folgendes umfasst:
    Mittel zum Speichern eines Ortscodes, der der Fernsteuergruppe eindeutig zugeordnet ist, und
    Mittel zum Verschlüsseln des Ortscodes mit einem Anlern-Verschlüsselungsschlüssel zum Anlernen; und
    Mittel zum Leiten des Sendens des verschlüsselten Ortscodes in einem Anlern-Strahlungssignal.
  9. Fernsteuergruppe nach einem der Ansprüche 4 bis 8, wobei der Empfängerprozessor Mittel umfasst zum:
    Identifizieren einer Senderseriennummer in einer empfangenen Sendung und Ermitteln, ob sie gültig ist,
    Identifizieren eines Hopping-Indexes und eines Diskriminanzwertes in dem entschlüsselten Code, und
    Ermitteln, ob der Diskriminanzwert und der Hopping-Index gültig sind.
  10. Fernsteuergruppe nach Anspruch 9, wobei der Empfängerprozessor Mittel zum Ermitteln umfasst, ob die Seriennummer gültig ist, durch:
    Vergleichen der Seriennummer mit einer gespeicherten Liste von gültigen Seriennummern;
    Feststellen, dass die Seriennummer gültig ist, wenn sie dieselbe ist wie eine gespeicherte gültige Seriennummer oder wenn sie nachfolgend einen frischen verschlüsselten Code empfängt, der dieselbe Seriennummer und einen gültigen Hopping-Index enthält.
EP00650129A 1999-09-13 2000-09-13 Ein Fernsteuersender Expired - Lifetime EP1085481B1 (de)

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 (de) 2001-03-21
EP1085481A3 EP1085481A3 (de) 2008-05-28
EP1085481B1 true EP1085481B1 (de) 2012-02-08

Family

ID=11042121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00650129A Expired - Lifetime EP1085481B1 (de) 1999-09-13 2000-09-13 Ein Fernsteuersender

Country Status (6)

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

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
ES2095142T3 (es) 1993-11-01 1997-02-01 Phisilog Res Ltd Transmisor para un grupo de control remoto.
US5767784A (en) * 1994-06-10 1998-06-16 Delco Electronics Corporation Initialization method for keyless entry system
CA2193846C (en) * 1995-05-17 2004-02-17 Bradford L. Farris Rolling code security system
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
ES2382778T3 (es) 2012-06-13
ATE545122T1 (de) 2012-02-15
EP1085481A3 (de) 2008-05-28
EP1085481A2 (de) 2001-03-21
PT1085481E (pt) 2012-04-13
DK1085481T3 (da) 2012-05-14
IES20000729A2 (en) 2001-04-04

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