EP 0395596 A3 19910320 - AN IMPROVED ANTI-THEFT SYSTEM, PARTICULARLY FOR MOTOR VEHICLES
Title (en)
AN IMPROVED ANTI-THEFT SYSTEM, PARTICULARLY FOR MOTOR VEHICLES
Publication
Application
Priority
IT 6731589 A 19890428
Abstract (en)
[origin: EP0395596A2] The improvements relate to: - the provision of a transmitter (9) in the unit (2) installed in the vehicle for sending to the control unit (3) carried by the user a signal which confirms the activation of the system and can be stored by the control unit (3); - the alternating use of two different messages for activating and deactivating the system so that any recording of the activation message by a third party with a view to its possible use as a deactivation message is rendered useless, and - the temporary shut-down of the activated system upon receipt of successive different messages approximating to the valid deactivation message so as to prevent its possible deactivation.
IPC 1-7
IPC 8 full level
G07C 9/00 (2006.01)
CPC (source: EP)
G07C 9/00309 (2013.01); G07C 2009/00793 (2013.01); G07C 2209/08 (2013.01); G07C 2209/62 (2013.01)
Citation (search report)
- [A] GB 2209050 A 19890426 - HONDA MOTOR CO LTD [JP], et al
- [A] GB 2192665 A 19880120 - NEIMAN SECURITY PRODUCTS LIMIT
- [A] IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 35, no. 2, May 1988, pages 208-216, New York, US; M. HIRANO et al.: "Keyless entry system with radio card transponder"
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0395596 A2 19901031; EP 0395596 A3 19910320; IT 1232082 B 19920123; IT 8967315 A0 19890428
DOCDB simple family (application)
EP 90830168 A 19900417; IT 6731589 A 19890428