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WO1994018036A1 - Installation telecommandee pour la mise en securite d'un vehicule - Google Patents

Installation telecommandee pour la mise en securite d'un vehicule Download PDF

Info

Publication number
WO1994018036A1
WO1994018036A1 PCT/DE1994/000147 DE9400147W WO9418036A1 WO 1994018036 A1 WO1994018036 A1 WO 1994018036A1 DE 9400147 W DE9400147 W DE 9400147W WO 9418036 A1 WO9418036 A1 WO 9418036A1
Authority
WO
WIPO (PCT)
Prior art keywords
code
rolling code
unlocking
signal
rolling
Prior art date
Application number
PCT/DE1994/000147
Other languages
German (de)
English (en)
Inventor
Rodney Phillip Linton
Janis Eglinsch-Veglinsch
Wolfgang Matuschek
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to AU60371/94A priority Critical patent/AU6037194A/en
Publication of WO1994018036A1 publication Critical patent/WO1994018036A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/20—Means to switch the anti-theft system on or off
    • B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
    • 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
    • G07C9/00174—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
    • G07C2009/0023—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 with encription of the transmittted data signal
    • 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
    • G07C2009/00238—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 transmittted data signal containing a code which is changed
    • G07C2009/00253—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 transmittted data signal containing a code which is changed dynamically, e.g. variable code - rolling code
    • 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
    • G07C2009/00793—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 by Hertzian waves

Definitions

  • the invention relates to a device according to the preamble of the main claim.
  • Known devices generally include the closing devices of the vehicle doors and control devices for controlling the function of essential vehicle components, such as the starter, the gasoline pump, the injection system or the central engine control device. Commissioning of a vehicle secured in this way is not possible even if an unauthorized person has entered the vehicle interior and has short-circuited the ignition.
  • the security device is typically actuated with the aid of a remote control, which, for example, generates coded radio-frequency or infrared signals.
  • a weak point of these known devices is that they can be avoided by unauthorized recording of the code signal transmitted between the vehicle key and the vehicle. Once recorded, the control signals can be reproduced in any manner, and thus also allow an unauthorized user to put the vehicle into operation.
  • the invention has for its object to provide a remote control security device that avoids that an unauthorized start-up of a vehicle is possible by simply recording and playing back an unlocking signal.
  • a device with the characterizing features of the main claim In a security device according to the invention, the unlocking code transmitted between the remote control key and the vehicle is changed each time the security device is actuated. The change takes place in the remote control key and in the receiving device arranged in the vehicle in the same way.
  • the advantage of continuously changing the unlocking code is that unlocking the vehicle using a code recorded during a previous unlocking process is not possible. A recorded code would be identical to that used in the last previous unlocking process, but the receiving device arranged in the vehicle would always expect a code that was changed compared to the previous one. If the same code were used again, it would therefore not react.
  • the evaluation unit which receives the unlocking code in such a way that it allows unlocking even if the code received differs from the expected code by a predetermined number of operations.
  • the number of actuation processes by which the unlocking code emitted by the remote control and the unlocking code expected by the evaluation unit may differ from one another is in the range from 100 to 500, preferably 250.
  • FIG. 1 shows a basic diagram of the proposed security device
  • FIG. 2 shows a block diagram of the transmitting and receiving device
  • FIG. 3 shows a flow chart of the code checking process.
  • a remote control 8 in the form of a remote control key and an evaluation unit 4 arranged in the vehicle to be secured, which receives signals emitted by the remote control key 8 via an antenna 6.
  • the key 8 is composed of a handle housing 10 and a key blade 12 emerging therefrom. However, the latter can also be missing or implemented in a separate key.
  • the handle housing 10 hereinafter simply referred to as the housing, are located to produce an unlocking signals a signal generating device 14, and an antenna 38 for radiating the generated signals.
  • the evaluation unit 4 arranged in the vehicle to be secured is connected on the output side to the door locking device 24 and further devices which are elementary for the function of the vehicle, for example the starter 26 and / or the gasoline pump 28 and / or the injection system 30. Of course, others can also or further vehicle devices can be connected to the evaluation unit.
  • the arrangement shown in Figure 1 is known per se and will therefore not be described further.
  • Figure 3 illustrates the principle of operation of the safety device according to the invention.
  • the signal generating device 14 arranged in the housing 10 of the key 8 has a device 32 for generating a fixed code, a device 34 for generating a rolling code and an encryption device 36.
  • the fixed code generating device 32 is one Storage.
  • the fixed code can be, for example, a 16-bit binary code individually assigned to each individual vehicle.
  • the generating device 34 contains a circuit for generating a rolling code. This can also be a 16-bit binary code.
  • the output signals of the code generating devices 32, 34 are fed to an encryption unit 36.
  • an encryption unit 36 By linking the fixed code F obtained and the received rolling code R, it generates an encrypted unlocking signal.
  • the encryption takes place in such a way that it is not possible in a simple manner from the unlocking code to recognize the change rule on which the rolling code generated in the unit 34 is based. This is achieved in particular by a suitable logical combination of the signals, preferably by an AND or an EXOR combination or a combination of these logical combinations with arithmetic or logical operations.
  • the output signal of the encryption device 36 is fed to a transmission device, not shown, which emits it via the antenna 38 arranged in the housing 10.
  • the encrypted unlocking signal is received on the vehicle side by the antenna 6 and fed to a decryption device 40.
  • This is part of the evaluation unit 4. It is designed to match the encryption device 36 to undo the encryption process.
  • the decryption device 40 in turn generates the fixed code F contained therein and the rolling code R contained therein from the received unlocking signal. Via lines 42, 44 it leads the first of a device 46 for checking the fixed code, the second of a device 48 for checking the rolling codes too. All elements 42 to 48 are also part of the evaluation unit 4. So that the security device enables vehicle operation, both the fixed code F and the rolling code R must be found to be in order.
  • the checking device 46 checks whether the fixed code F supplied by the decryption device 40 has one in the evaluation device 4, for example in a memory 45 existing reference fixed code F matches. If this is the case, it issues an approval signal to carry out the subsequent logical operations.
  • the checking device 48 checks whether the rolling code obtained differs in a predetermined manner from the rolling code R obtained during the last permissible unlocking, which for this purpose is stored in a memory 47, for example is stored, differentiates in a predetermined manner. In a particularly simple embodiment of the security device according to the invention, this check consists in examining whether the difference between the rolling code R currently received and the R N last used before has the value one. If the result of the test is positive, the test device 48 generates an approval signal in order to initiate the further logical operations for releasing the vehicle from operation.
  • the evaluation unit 4 interprets the unlocking signal received as a signal generated by an authorized user and unlocks the security device. If, on the other hand, one or both of the signals emitted by the testing devices 46, 48 is not an approval signal, the evaluation unit 4 interprets the unlocking signal received as an unauthorized signal and maintains the vehicle lock. Unlocking the vehicle is therefore in particular not possible with a simple copy of the signal used in the previous unlocking.
  • a resynchronization is achieved in the event of a desynchronization by the switch 20 arranged on the key 8 being actuated a predetermined number of times within a predetermined period of time.
  • the switch 20 for a new synchronization must be activated five times within a period of 10 seconds.
  • the fixed code F is checked in unchanged form by the test device 46.
  • the rolling code R is updated in an unchanged form each time the switch 20 is operated in accordance with the predetermined formation rule, in the simplest case by incrementing by one.
  • FIG. 3 shows a flow chart of the code check in the evaluation unit 4.
  • the evaluation unit 4 After decoding the received unlocking signal in the decryption device 40 in step 58, the evaluation unit 4 first checks in step 59 whether the fixed code F transmitted with the unlocking signal is OK. If this is not the case, it waits for the next signal F, R to be unlocked. If the result of the fixed code check in step 59 is positive, a check is carried out in step 60 as to whether the received rolling code component R of the unlocking signal lies in the range between the rolling code R N used in the last unlocking and the rolling code R N + K m: ' - t ⁇ he ordinal number N + K. If the rolling codes can be understood as numbers corresponding to their ordinal number, this check is mathematically as follows: R N ⁇ R ⁇ R N + K? Is the rolling code in the predefined area
  • step 74 the evaluation unit replaces the rolling code RJJ resulting from the last unlocking by the current rolling code R and deactivates the security device. If the check in step 60 shows that the rolling code R is not in the predefined area, there is a desynchronization.
  • the evaluation unit 4 checks in step 62 whether the rolling code R is, with regard to its ordinal number, the one following an internal code R ⁇ stored in a buffer. Are the codes R, R ⁇ again as Representable atomic numbers, step 62 corresponds to checking whether the codes R and R- ⁇ differ by the value one.
  • step 64 Vehicle operation is not released.
  • step 64 the evaluation unit 4 expects to receive the next unlocking signal F, R.
  • the rolling code contained therein if there is a desynchronization, is inevitably again outside the permissible range checked in step 60, which is why step 62 is carried out automatically.
  • the condition checked in step 62 is now fulfilled.
  • the counter Z is therefore increased in one.
  • the counter reading Z obtained is then checked in step 68 to determine whether it has reached a predetermined value P, for example the value 5. If this is not the case, in step 64 the content of the buffer store 49 is in turn replaced by the current rolling code R.
  • Steps 59, 60, 62, 66, 68, 64 are repeated until the counter status reaches the predetermined value P checked in step 68 Has. If this value is five, for example, an unlocking signal F, R must be sent to the evaluation unit 4 a total of six times for a new synchronization. If the result of the test in step 68 is finally positive, the value of the last one becomes analogous to step 74 in step 72 Unlocking process existing rolling code R ⁇ replaced by the value of the current rolling code R and the security device deactivated.
  • the repeated transmission of an unlocking signal in order to increase the counter to the predetermined value in step 66 must take place within a predetermined period of time.
  • This time span can be, for example, 10 seconds if the predetermined value is five.
  • it is implemented by a time counter 70, which monitors the increment in step 66. If the counter does not receive the number of count commands required to reach the value checked in step 68 within the predetermined time, the time counter is reset. The resynchronization must then be started again.
  • the evaluation unit After determining the receipt of a correct unlocking signal in steps 74 or 72, with subsequent release of vehicle operation, the evaluation unit switches to a waiting position and awaits the arrival of new unlocking code signals F, R.
  • Both the signal generating device 14 arranged in the key 8 and the evaluation unit 4 located in the vehicle can be implemented both by means of discrete components and advantageously in the form of a digital signal processing device such as a microprocessor or an ASIC.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)

Abstract

On propose une installation permettant de mettre un véhicule en sécurité sans contact. Cette installation se compose d'une clé à télécommande (8) servant à produire et à émettre un signal de déverrouillage (F, R) ainsi que d'un dispositif (4, 6) disposé dans le véhicule pour la réception et l'analyse du signal de déverrouillage. Selon l'invention, le signal de déverrouillage (F, R) est modifié chaque fois que la clé à télécommande (6) est actionnée.
PCT/DE1994/000147 1993-02-12 1994-02-11 Installation telecommandee pour la mise en securite d'un vehicule WO1994018036A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU60371/94A AU6037194A (en) 1993-02-12 1994-02-11 Remote-controlled protection system for a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL727693 1993-02-12
AUPL7276 1993-02-12

Publications (1)

Publication Number Publication Date
WO1994018036A1 true WO1994018036A1 (fr) 1994-08-18

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ID=3776708

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/000147 WO1994018036A1 (fr) 1993-02-12 1994-02-11 Installation telecommandee pour la mise en securite d'un vehicule

Country Status (1)

Country Link
WO (1) WO1994018036A1 (fr)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0697491A1 (fr) * 1994-08-05 1996-02-21 Nippondenso Co., Ltd. Système de télécommande utilisant un code d'identification variable et procédé associé
WO1996033328A3 (fr) * 1995-04-20 1996-11-21 Directed Electronics Inc Perfectionnement d'un systeme de code de sauts integre
EP0767286A2 (fr) * 1995-10-02 1997-04-09 Motorola, Inc. Système télécommandé d'entrée sans clé et d'immobilisation pour véhicules automobiles
EP0771498A1 (fr) * 1995-05-17 1997-05-07 The Chamberlain Group, Inc. Systeme de securite a code de brassage
US5661804A (en) * 1995-06-27 1997-08-26 Prince Corporation Trainable transceiver capable of learning variable codes
EP0825314A1 (fr) * 1995-04-27 1998-02-25 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Emetteur/recepteur de vehicule et procede d'emission/reception pour l'emetteur/recepteur de vehicule
WO1998044225A1 (fr) * 1997-04-03 1998-10-08 Alain Godoy Serrure electronique codee pour porte et fenetre
WO2001033016A1 (fr) * 1999-10-29 2001-05-10 Lear Corporation Procede de mise en memoire de code de rappel pour ouverture telecommandee sans cle
DE19547283B4 (de) * 1994-12-19 2005-07-21 Nippon Soken, Inc., Nishio Verschlüsselungssystem und Verschlüsselungsverfahren, die an verschiedenen schlüssellosen Zugangssystemen anwendbar sind
US7269416B2 (en) 2003-07-30 2007-09-11 Lear Corporation Universal vehicle based garage door opener control system and method
US7412056B2 (en) 1995-05-17 2008-08-12 The Chamberlain Group, Inc. Rolling code security system
US7447498B2 (en) 2003-07-30 2008-11-04 Lear Corporation User-assisted programmable appliance control
US7492905B2 (en) 1995-05-17 2009-02-17 The Chamberlain Group, Inc. Rolling code security system
US7492898B2 (en) 1995-05-17 2009-02-17 The Chamberlain Group, Inc. Rolling code security system
US7589613B2 (en) 2006-04-03 2009-09-15 Lear Corporation Trinary to trinary rolling code generation method and system
US7760071B2 (en) 2003-07-30 2010-07-20 Lear Corporation Appliance remote control having separated user control and transmitter modules remotely located from and directly connected to one another
US7812739B2 (en) 2003-07-30 2010-10-12 Lear Corporation Programmable appliance remote control
US7855633B2 (en) 2003-07-30 2010-12-21 Lear Corporation Remote control automatic appliance activation
EP3078514A3 (fr) * 2015-04-07 2016-10-26 WESTFALIA - Automotive GmbH Systeme comprenant un appareil de commande et un dispositif de commande
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US10862924B2 (en) 2005-06-30 2020-12-08 The Chamberlain Group, Inc. Method and apparatus to facilitate message transmission and reception using different transmission characteristics
US10944559B2 (en) 2005-01-27 2021-03-09 The Chamberlain Group, Inc. Transmission of data including conversion of ternary data to binary data
US10997810B2 (en) 2019-05-16 2021-05-04 The Chamberlain Group, Inc. In-vehicle transmitter training
US11074773B1 (en) 2018-06-27 2021-07-27 The Chamberlain Group, Inc. Network-based control of movable barrier operators for autonomous vehicles
US11423717B2 (en) 2018-08-01 2022-08-23 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
US12149618B2 (en) 2005-01-27 2024-11-19 The Chamberlain Group Llc Method and apparatus to facilitate transmission of an encrypted rolling code

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636822C1 (de) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Elektronische Fernbetaetigungseinrichtung,insbesondere fuer Zentralverriegelungsanlagen von Kraftfahrzeugen
EP0372285A1 (fr) * 1988-12-06 1990-06-13 DELTA ELETTRONICA s.p.a. Dispositif pour transmettre à distance des signaux de contrôle de sécurité
DE4204463A1 (de) * 1991-02-15 1992-08-27 Alps Electric Co Ltd Id-informations-sende-/empfangssystem
WO1992017863A1 (fr) * 1991-03-26 1992-10-15 Edward Bruneau Dispositif d'actionnement autorise des organes de condamnation d'une installation
GB2265482A (en) * 1992-03-28 1993-09-29 Pektron Ltd Security system data transmission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636822C1 (de) * 1986-10-29 1987-10-15 Ruf Kg Wilhelm Elektronische Fernbetaetigungseinrichtung,insbesondere fuer Zentralverriegelungsanlagen von Kraftfahrzeugen
EP0372285A1 (fr) * 1988-12-06 1990-06-13 DELTA ELETTRONICA s.p.a. Dispositif pour transmettre à distance des signaux de contrôle de sécurité
DE4204463A1 (de) * 1991-02-15 1992-08-27 Alps Electric Co Ltd Id-informations-sende-/empfangssystem
WO1992017863A1 (fr) * 1991-03-26 1992-10-15 Edward Bruneau Dispositif d'actionnement autorise des organes de condamnation d'une installation
GB2265482A (en) * 1992-03-28 1993-09-29 Pektron Ltd Security system data transmission

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5872519A (en) * 1992-05-22 1999-02-16 Directed Electronics, Inc. Advanced embedded code hopping system
US5952933A (en) * 1992-05-22 1999-09-14 Issa; Darrell E. System having advanced embedded code hopping encryption and learn mode therefor
US5914667A (en) * 1992-05-22 1999-06-22 Issa; Darrell E. Advanced embedded code hopping system having master fixed code encryption
EP0697491A1 (fr) * 1994-08-05 1996-02-21 Nippondenso Co., Ltd. Système de télécommande utilisant un code d'identification variable et procédé associé
US5774065A (en) * 1994-08-05 1998-06-30 Nippondenso Co., Ltd. Remote control system and method using variable ID code
DE19547283B4 (de) * 1994-12-19 2005-07-21 Nippon Soken, Inc., Nishio Verschlüsselungssystem und Verschlüsselungsverfahren, die an verschiedenen schlüssellosen Zugangssystemen anwendbar sind
WO1996033328A3 (fr) * 1995-04-20 1996-11-21 Directed Electronics Inc Perfectionnement d'un systeme de code de sauts integre
US6263197B1 (en) 1995-04-27 2001-07-17 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Transmitter/receiver for a vehicle and transmission/reception method of the transmitter/receiver for vehicles
EP0825314A1 (fr) * 1995-04-27 1998-02-25 Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho Emetteur/recepteur de vehicule et procede d'emission/reception pour l'emetteur/recepteur de vehicule
EP0825314A4 (fr) * 1995-04-27 2000-12-06 Tokai Rika Co Ltd Emetteur/recepteur de vehicule et procede d'emission/reception pour l'emetteur/recepteur de vehicule
US7492905B2 (en) 1995-05-17 2009-02-17 The Chamberlain Group, Inc. Rolling code security system
EP0771498A4 (fr) * 1995-05-17 2001-09-12 Chamberlain Group Inc Systeme de securite a code de brassage
EP0771498A1 (fr) * 1995-05-17 1997-05-07 The Chamberlain Group, Inc. Systeme de securite a code de brassage
US7412056B2 (en) 1995-05-17 2008-08-12 The Chamberlain Group, Inc. Rolling code security system
US7623663B2 (en) 1995-05-17 2009-11-24 The Chamberlain Group, Inc. Rolling code security system
US7492898B2 (en) 1995-05-17 2009-02-17 The Chamberlain Group, Inc. Rolling code security system
US5661804A (en) * 1995-06-27 1997-08-26 Prince Corporation Trainable transceiver capable of learning variable codes
EP0767286A2 (fr) * 1995-10-02 1997-04-09 Motorola, Inc. Système télécommandé d'entrée sans clé et d'immobilisation pour véhicules automobiles
EP0767286A3 (fr) * 1995-10-02 1998-10-14 Motorola, Inc. Système télécommandé d'entrée sans clé et d'immobilisation pour véhicules automobiles
FR2761716A1 (fr) * 1997-04-03 1998-10-09 Alain Godoy Serrure electronique codee a double pene pour porte et fenetre avec telecommande integree sans fil a code variable automatique
WO1998044225A1 (fr) * 1997-04-03 1998-10-08 Alain Godoy Serrure electronique codee pour porte et fenetre
WO2001033016A1 (fr) * 1999-10-29 2001-05-10 Lear Corporation Procede de mise en memoire de code de rappel pour ouverture telecommandee sans cle
US7812739B2 (en) 2003-07-30 2010-10-12 Lear Corporation Programmable appliance remote control
US7855633B2 (en) 2003-07-30 2010-12-21 Lear Corporation Remote control automatic appliance activation
US7489922B2 (en) 2003-07-30 2009-02-10 Lear Corporation User-assisted programmable appliance control
US7447498B2 (en) 2003-07-30 2008-11-04 Lear Corporation User-assisted programmable appliance control
US7760071B2 (en) 2003-07-30 2010-07-20 Lear Corporation Appliance remote control having separated user control and transmitter modules remotely located from and directly connected to one another
US7269416B2 (en) 2003-07-30 2007-09-11 Lear Corporation Universal vehicle based garage door opener control system and method
US10944559B2 (en) 2005-01-27 2021-03-09 The Chamberlain Group, Inc. Transmission of data including conversion of ternary data to binary data
US12149618B2 (en) 2005-01-27 2024-11-19 The Chamberlain Group Llc Method and apparatus to facilitate transmission of an encrypted rolling code
US11799648B2 (en) 2005-01-27 2023-10-24 The Chamberlain Group Llc Method and apparatus to facilitate transmission of an encrypted rolling code
US10862924B2 (en) 2005-06-30 2020-12-08 The Chamberlain Group, Inc. Method and apparatus to facilitate message transmission and reception using different transmission characteristics
US7589613B2 (en) 2006-04-03 2009-09-15 Lear Corporation Trinary to trinary rolling code generation method and system
EP3078514A3 (fr) * 2015-04-07 2016-10-26 WESTFALIA - Automotive GmbH Systeme comprenant un appareil de commande et un dispositif de commande
US10652743B2 (en) 2017-12-21 2020-05-12 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US12108248B2 (en) 2017-12-21 2024-10-01 The Chamberlain Group Llc Security system for a moveable barrier operator
US11122430B2 (en) 2017-12-21 2021-09-14 The Chamberlain Group, Inc. Security system for a moveable barrier operator
US11778464B2 (en) 2017-12-21 2023-10-03 The Chamberlain Group Llc Security system for a moveable barrier operator
US11763616B1 (en) 2018-06-27 2023-09-19 The Chamberlain Group Llc Network-based control of movable barrier operators for autonomous vehicles
US12056971B1 (en) 2018-06-27 2024-08-06 The Chamberlain Group Llc. Network-based control of movable barrier operators for autonomous vehicles
US11074773B1 (en) 2018-06-27 2021-07-27 The Chamberlain Group, Inc. Network-based control of movable barrier operators for autonomous vehicles
US11423717B2 (en) 2018-08-01 2022-08-23 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
US11869289B2 (en) 2018-08-01 2024-01-09 The Chamberlain Group Llc Movable barrier operator and transmitter pairing over a network
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US10997810B2 (en) 2019-05-16 2021-05-04 The Chamberlain Group, Inc. In-vehicle transmitter training

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