Patent ID: 6107695
Filing Date: 2000-08-22
Classification: B60R

Abstract:
A drive lock device, comprising:input devices;an engine control unit cooperating with the input devices for receiving an access authorization code for verifying a user, the engine control unit being operationally ready when the engine control unit receives the access authorization code; anda security control unit coupled to the engine control unit via a signal line,wherein the engine control unit includes a first arrangement for delivering a predetermined call signal via the signal line to the security control unit, the predetermined call signal including a predetermined content and serving as a request for the security control unit to transmit a release code,wherein the security control unit includes a second arrangement for comparing the predetermined call signal of the engine control unit with a reference signal of the security control unit, the second arrangement providing the release code to the engine control unit if the predetermined content of the predetermined call signal matches a predetermined content of the reference signal,wherein the engine control unit further includes first storage devices for storing the release code received as a reference code, andwherein the engine control unit further includes a testing device for checking whether the reference code is present in the first storage devices when the release code is received, the testing device storing the release code as the reference code in the first storage devices when the reference code is not present in the first storage devices.