Security device for guarding a vehicle

Details Security device for guarding a vehicle Security device for guarding a vehicle

2006-05-23

2006-05-23

Sheikh, Ayaz (Department: 2136)

Cryptography

Communication system using cryptography

Symmetric key cryptography

Reexamination Certificate

active

07050587

ABSTRACT:
In a device for actuating a security device, preferably for securing a motor vehicle against unauthorized use, in which a control unit transmits a first coded electromagnetic signal (stimulus signal), in which a portable transmitter (radio key) receives the stimulus signal and transmits a second coded signal (enable signal), and in which the control unit is connected to the security device and actuates the latter if the enable signal is received and recognized, both the control unit and the radio key can after the carrier frequency of the coded electromagnetic signals. During signal transmission, this frequency is altered in a manner which is known only to the control unit and to the radio key.

REFERENCES:
patent: 5291516 (1994-03-01), Dixon et al.
patent: 5592179 (1997-01-01), Windyka
patent: 5661804 (1997-08-01), Dykema et al.
patent: 5708712 (1998-01-01), Brinkmeyer et al.
patent: 5812051 (1998-09-01), Talbot et al.
patent: 5844990 (1998-12-01), Kokubu et al.
patent: 5898230 (1999-04-01), Bartel
patent: 5959540 (1999-09-01), Walter
patent: 6043752 (2000-03-01), Hisada et al.
patent: 6317035 (2001-11-01), Berberich et al.
patent: 6323566 (2001-11-01), Meier
patent: 6329909 (2001-12-01), Siedentop et al.
patent: 6342844 (2002-01-01), Rozin
patent: 6469616 (2002-10-01), Lindner et al.
patent: 0802497 (1997-10-01), None
patent: 0926021 (1999-06-01), None
patent: 2288261 (1995-10-01), None
patent: 2310300 (1997-08-01), None
patent: 2311155 (1997-09-01), None
patent: 2332548 (1999-06-01), None

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