EP 1064176 A2 20010103 - KEYLESS VEHICLE ACCESS AUTHORISATION SYSTEM
Title (en)
KEYLESS VEHICLE ACCESS AUTHORISATION SYSTEM
Title (de)
SCHLÜSSELLOSES ZUGANGSBERECHTIGUNGSSYSTEM FÜR EIN FAHRZEUG
Title (fr)
SYSTEME D'AUTORISATION D'ACCES POUR VEHICULE, SANS CLEF
Publication
Application
Priority
- DE 9900731 W 19990317
- DE 19812294 A 19980320
Abstract (en)
[origin: DE19812294A1] The invention relates to a keyless vehicle access authorisation system. A control apparatus in the vehicle engages in a question-and-answer dialogue with a portable transponder and checks and then clears or blocks authorisation to unlock or lock the vehicle doors. An antenna for transmitting and receiving the question-and-answer signal is located in at least the outside mirror on the driver's side and the question-and-answer dialogue is initiated through switches activated by the door handles. The communications range between the portable transponder and the control apparatus in the vehicle is considerably greater as a result of the fact that an additional antenna (13) is located on at least the driver's side (FS) in the area of a rear side window or the rear vehicle door. Said additional antenna (13) is also connected to the common control apparatus (10) and can be used for transmitting the question signal of the control apparatus and/or for receiving the answer signal of the portable transponder. When transmitting, the two antennae (12, 13) generate a two-dimensional electromagnetic field as a result of their arrangement.
IPC 1-7
IPC 8 full level
B60R 25/00 (2006.01); B60R 25/24 (2013.01); E05B 49/00 (2006.01); G07C 9/00 (2006.01); H01Q 1/22 (2006.01); H01Q 1/32 (2006.01); H04Q 9/00 (2006.01)
CPC (source: EP)
B60R 25/24 (2013.01); G07C 9/00309 (2013.01); G07C 2009/00365 (2013.01); G07C 2009/00396 (2013.01); G07C 2009/00793 (2013.01)
Citation (search report)
See references of WO 9948732A2
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
DE 19812294 A1 19990930; DE 19812294 C2 20000525; EP 1064176 A2 20010103; JP 2002507676 A 20020312; WO 9948732 A2 19990930; WO 9948732 A3 19991028
DOCDB simple family (application)
DE 19812294 A 19980320; DE 9900731 W 19990317; EP 99919086 A 19990317; JP 2000537744 A 19990317