EP 0154019 B1 19880720 - CODING METHOD FOR AN ELECTRONIC KEY
Title (en)
CODING METHOD FOR AN ELECTRONIC KEY
Publication
Application
Priority
DE 3407436 A 19840229
Abstract (en)
[origin: EP0154019A1] 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.
IPC 1-7
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)
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