| 摘要 |
A security device primarily for preventing theft of motor vehicles comprises a rigid metal housing (6) containing a component (10), such as the steering column lock of a vehicle, movable between operative and inoperative modes, a first electronic circuit, conveniently in the form of a first microchip, within the housing (6) for causing movement of the component (10) between its operative and inoperative modes, a receptor socket (22) remote from the housing (6) and electronically interconnected with the first electronic circuit, and an intelligent coded key (24) incorporating a second electronic circuit, conveniently in the form of second microchip, insertion of the key (24) into the receptor socket (22), resulting in the transmission of coded signals between the first and second circuits, reception by the first circuit of an approved signal from the second circuit resulting in the component (10) being moved from its inoperative mode to its operative mode. |
