Global Patent Index - EP 0846821 B1

EP 0846821 B1 20050119 - Device for checking the user authorization of an access control system

Title (en)

Device for checking the user authorization of an access control system

Title (de)

Vorrichtung zur Prüfung der Nutzungsberechtigung für Zugangskontrolleinrichtungen

Title (fr)

Dispositif pour vérifier l'autorisation de contrôle d'accès


EP 0846821 B1 20050119 (DE)


EP 97121006 A 19971129


DE 19650020 A 19961203

Abstract (en)

[origin: EP0846821A2] The device has an access-side control device with a storage region for a secret code, a user-side key device which contains a transponder with a storage region for a secret code and something in the control unit to establish the necessary authority for the release of the access device. Information sent out from the transponder, keyed with the secret code is compared with default information stored by the secret code in the control device and access release occurs only when there is agreement. The transponder of the key device contains a further storage region in which car-specific release information of the key device can be filed at the control unit to allow testing by the control unit of whether the key device possesses the authority to be instructed at the control unit.

IPC 1-7

E05B 49/00; B60R 25/04

IPC 8 full level

B60R 25/04 (2006.01); E05B 49/00 (2006.01); G07C 9/00 (2006.01)

CPC (source: EP)

G07C 9/00309 (2013.01); G07C 9/00857 (2013.01); G07C 2009/00793 (2013.01); G07C 2009/00873 (2013.01)

Citation (examination)

Designated contracting state (EPC)


DOCDB simple family (publication)

EP 0846821 A2 19980610; EP 0846821 A3 20001129; EP 0846821 B1 20050119; DE 59712170 D1 20050224

DOCDB simple family (application)

EP 97121006 A 19971129; DE 59712170 T 19971129