Anti-theft system and method for a vehicle

B - Operations – Transporting – 60 – R

Patent

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Details

B60R 25/04 (2006.01) B60R 25/00 (2006.01) E05B 49/04 (2006.01)

Patent

CA 2215279

Anti-theft system and method in which re-registration and deletion of a code is performed without using an exclusive tool. Modes are changed to a master key code registration mode when an ignition switch is switched from OFF to ON five times consecutively within T1 seconds after a master key having its code registered is inserted into a key cylinder, within the following T2 seconds an opening and closing operation of a door is repeated six times, and the ignition switch is switched off and then the key is removed from the key cylinder. When a master key, a new code of which is to be registered is then inserted into the key cylinder within T3 seconds after the master key having a code already registered is pulled out of the key cylinder, and the ignition switch is turned on within T4 seconds after the insertion of the master key into the key cylinder, an identification code to be registered is read out of a transponder, and after a lapse of T5 seconds the identification code so read out is registered in memory as a registration code.

Système antivol et méthode selon laquelle le réenregistrement et la suppression s'effectuent sans recourir à un outil exclusif. Les modes se convertissent en un mode d'enregistrement de code de clé principale lorsque le commutateur d'allumage est actionné de sa position hors service à sa position en service cinq fois de suite dans un délai de T1 secondes après qu'une clé principale comportant un code enregistré a été insérée dans un barillet de serrure, dans un délai de T2 secondes consécutif à l'opération d'ouverture et de fermeture d'une porte répétée six fois, et que le contact est coupé puisque la clé est retirée du barillet de serrure. Lorsque la clé principale, dont on doit enregistrer le nouveau code, est ensuite introduite dans le barillet de serrure dans un délai de T3 secondes après que cette clé principale comportant un code déjà enregistré a été retirée du barillet de serrure, et que le contact est établi dans un délai de T4 secondes après l'introduction de la clé principale dans le barillet de serrure, un code d'identification devant être enregistré est donné en sortie par un transpondeur, et après un laps de temps de T5 secondes, le code d'identification ainsi donné en sortie est enregistré en mémoire comme code d'enregistrement.

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