EP 1061211 A1 20001220 - Method for securing a bidirectionnal data transmission with an identifier and system for its implementation
Title (en)
Method for securing a bidirectionnal data transmission with an identifier and system for its implementation
Title (de)
Verfahren zur Sicherung einer bidirektionellen Datenübertragung mit einer Kennzeichnung und System zu dessen Durchführung
Title (fr)
Procédé pour sécuriser une transmission bidirectionnelle de données avec un identifiant et système pour sa mise en oeuvre
Publication
Application
Priority
FR 9907529 A 19990615
Abstract (en)
The method involves re-sending second signal toward an identification device (ID), so that the latter can detect a change of phase between the second questioning signal (VE) generates by the ID and the second signal (VR) received by the ID. An access in prohibited when the sequence of detected change of phase does not correspond to the identification code known by the ID. An Independent claim is included for: (a) a system for implementing claimed method
IPC 1-7
IPC 8 full level
G07C 9/00 (2006.01)
CPC (source: EP)
G07C 9/00309 (2013.01); G07C 9/28 (2020.01); G07C 2009/00325 (2013.01); G07C 2009/00555 (2013.01); G07C 2009/00769 (2013.01); G07C 2209/63 (2013.01)
Citation (search report)
- [A] FR 2621134 A1 19890331 - MATSUSHITA ELECTRIC WORKS LTD [JP]
- [A] EP 0694887 A1 19960131 - SUISSE ELECTRONIQUE MICROTECH [CH]
- [A] US 4804961 A 19890214 - HANE BENGT [SE]
- [A] US 5616966 A 19970401 - FISCHER ARMIN [DE], et al
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
EP 1061211 A1 20001220; EP 1061211 B1 20050302; DE 60018327 D1 20050407; DE 60018327 T2 20060413; ES 2234539 T3 20050701; FR 2795263 A1 20001222; FR 2795263 B1 20010824
DOCDB simple family (application)
EP 00401666 A 20000613; DE 60018327 T 20000613; ES 00401666 T 20000613; FR 9907529 A 19990615