EP 1346326 A1 20030924 - IDENTIFICATION SYSTEM FOR DETECTING AUTHORISATION TO ACCESS AN OBJECT OR TO USE AN OBJECT, ESPECIALLY A MOTOR VEHICLE
Title (en)
IDENTIFICATION SYSTEM FOR DETECTING AUTHORISATION TO ACCESS AN OBJECT OR TO USE AN OBJECT, ESPECIALLY A MOTOR VEHICLE
Title (de)
IDENTIFIKATIONSSYSTEM ZUM NACHWEIS EINER BERECHTIGUNG FÜR DEN ZUGANG ZU EINEM OBJEKT ODER DIE BENUTZUNG EINES OBJEKTS, INSBESONDERE EINES KRAFTFAHRZEUGS
Title (fr)
SYSTEME D'IDENTIFICATION POUR DETECTER UNE AUTORISATION D'ACCES A UN OBJET OU D'UTILISATION D'UN OBJET, NOTAMMENT D'UN VEHICULE AUTOMOBILE
Publication
Application
Priority
- EP 01984755 A 20011122
- EP 0113638 W 20011122
- EP 00128704 A 20001229
Abstract (en)
[origin: WO02054353A1] The invention relates to an identification system in which an interrogation signal is emitted on the side of the object, said signal having a carrier frequency which is modified in sections. A mobile encoder (20) encodes the interrogation signal and produces a response signal which is sent back to the object (10). Said response signal is mixed with the interrogation signal and decoded in an evaluation unit (14-16) on the side of the object. The distance (d) between the encoder (20) and the object (10) is then determined by means of Fourier transformation (16).
IPC 1-7
IPC 8 full level
B60R 25/01 (2013.01); B60R 25/10 (2013.01); B60R 25/24 (2013.01); G01S 13/32 (2006.01); G01S 13/84 (2006.01); G07C 9/00 (2006.01)
CPC (source: EP US)
G01S 13/84 (2013.01 - EP US); G07C 9/00309 (2013.01 - EP US); G07C 2009/00412 (2013.01 - EP US); G07C 2009/00793 (2013.01 - EP US); G07C 2209/63 (2013.01 - EP US)
Citation (search report)
See references of WO 02054353A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 02054353 A1 20020711; EP 1346326 A1 20030924; JP 2004516989 A 20040610; JP 3935432 B2 20070620; US 2004000986 A1 20040101; US 7098769 B2 20060829
DOCDB simple family (application)
EP 0113638 W 20011122; EP 01984755 A 20011122; JP 2002555377 A 20011122; US 60978203 A 20030630