Anti-theft car protection device

Details Anti-theft car protection device Anti-theft car protection device

1995-10-06

1998-03-31

Horabik, Michael

Communications: electrical

Continuously variable indicating

With meter reading

34082534, 34082572, 307 102, 307 105, 307 91, 364424045, G06F 704, B06R 2504, B06R 2510

Patent

active

057343306

ABSTRACT:
An anti-theft car protection device includes a key having an IC-chip embedded therein, and an ignition switch that can be turned by the key to any "OFF" position, an "ACC" position and an "ON" position. The device further includes an antenna mounted near the ignition switch, and a communication module that provides a radio communication between the IC-chip of the key and the antenna. The device also includes an immobilizer controller that determines, in accordance with an instruction signal issued from the communication module, whether or not the engine should be started. The communication module includes an electric field generating circuit that energizes the IC-chip of the key by causing the antenna to emit an electromagnetic wave, a transmitting/receiving circuit that carries out exchange of ID-codes with the IC-chip through the antenna, and a system control circuit that controls both the electric field generating circuit and the transmitting/receiving circuit.

REFERENCES:
patent: 4672225 (1987-06-01), Hanisko et al.
patent: 4965460 (1990-10-01), Tanaka et al.
patent: 4990906 (1991-02-01), Kell et al.
patent: 5043593 (1991-08-01), Tsutsumi et al.
patent: 5508691 (1996-04-01), Castleman et al.
patent: 5606306 (1997-02-01), Mutoh et al.

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