EP 0155378 B1 19880622 - CODING METHOD FOR AN ELECTRONIC KEY
Title (en)
CODING METHOD FOR AN ELECTRONIC KEY
Publication
Application
Priority
DE 3407469 A 19840229
Abstract (en)
[origin: EP0155378A1] 1. A method of code protection for an electronic key, in particular for motor vehicles with built-in central locking, which consists of a transmitter which transmits a coded infra-red signal which is received by a receiver tuned to the code, where the code of the signal can be automatically adjusted in the transmitter and the receiver, and where the transmitter transmits a reset code following desynchronisation or following a change of battery in the transmitter or the receiver, characterised in that the reset code is activated by the tapping-in of a binary number.
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 2009/00253 (2013.01); G07C 2009/00785 (2013.01); G07C 2209/06 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0155378 A1 19850925; EP 0155378 B1 19880622; DE 3407469 A1 19850905; DE 3472281 D1 19880728
DOCDB simple family (application)
EP 84115152 A 19841211; DE 3407469 A 19840229; DE 3472281 T 19841211