Global Patent Index - EP 0154019 A1

EP 0154019 A1 19850911 - Coding method for an electronic key.

Title (en)

Coding method for an electronic key.

Title (de)

Verfahren zur Code-Sicherung bei einem elektronischen Schlüssel.

Title (fr)

Procédé de codage pour clé électronique.

Publication

EP 0154019 A1 19850911 (DE)

Application

EP 84115594 A 19841217

Priority

DE 3407436 A 19840229

Abstract (en)

1. A method of code safeguarding for an electronic key, in particular for motor vehicles with built-in central locking, which comprises a transmitter which transmits a coded infrared signal which is received by a receiver tuned to the code, where the code of the signal can be set automatically in the transmitter and the receiver, and where the transmitter transmits a reset code following desynchronization or following a battery change in the transmitter or the receiver, where the reset code releases a lock, operated by the receiver, for opening by a mechanical key.

Abstract (de)

Bei einem Verfahren zur Code-Sicherung bei einem elektronischen Schlüssel, insbesondere für Kraftfahrzeuge mit eingebauter Zentralverriegelung, wird vom Sender nach Desynchronisation bzw. Batteriewechsel ein Reset-Code gesendet, der ein vom Empfänger angesteuertes Schloß zum Öffnen mit einem mechanischen Schlüssel freigibt.

IPC 1-7

E05B 49/00; G07C 9/00

IPC 8 full level

E05B 49/00 (2006.01); G07C 9/00 (2006.01)

CPC (source: EP)

G07C 9/00182 (2013.01); G07C 9/28 (2020.01); G07C 2009/00785 (2013.01); G07C 2209/06 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0154019 A1 19850911; EP 0154019 B1 19880720; DE 3407436 A1 19850829; DE 3472814 D1 19880825

DOCDB simple family (application)

EP 84115594 A 19841217; DE 3407436 A 19840229; DE 3472814 T 19841217