Electronic anti-theft system
First Claim
1. A method for operating an electronic anti-theft system, in particular for motor vehicles, in which the following steps are executed further to a keyless authorization request:
- a) performing a first data communication between an electronic key and a control device of the anti-theft system, during which first coded data for authentication of the key is exchanged;
b) immediately after the positive evaluation of the first coded data(b1) initiating the mechanical unlocking of a locking system of the anti-theft system;
(b2) effecting a second data communication between the key and the control device, during which second coded data for deactivation of an alarm system is exchanged;
(b2) delaying the triggering of the alarm system for a first time period;
c) after positive evaluation of the second coded data, deactivating the alarm system; and
wherein the anti-theft system comprises an access authorization system, whereby further to an access authorization request and mechanical unlocking of at least one door lock is first executed after positive evaluation of the first coded data and whereby the alarm system is only deactivated after positive evaluation of the second coded data.
1 Assignment
0 Petitions
Accused Products
Abstract
In a method for operating an electronic anti-theft system, data communication is effected between the control device and the key further to an access authorization request, whereby the control device unlocks the doors and deactivates an alarm system as a function of the data communication. The data communication for unlocking the doors and the data communication for disarming the alarm system are separate from each other. In this way, the mechanical unlocking of the doors can be initiated immediately after the data communication for unlocking the doors. The corresponding data communication for deactivating the alarm system is effected in parallel with this, whereby extensive cryptological data is exchanged between the control device and the key.
-
Citations
16 Claims
-
1. A method for operating an electronic anti-theft system, in particular for motor vehicles, in which the following steps are executed further to a keyless authorization request:
-
a) performing a first data communication between an electronic key and a control device of the anti-theft system, during which first coded data for authentication of the key is exchanged; b) immediately after the positive evaluation of the first coded data (b1) initiating the mechanical unlocking of a locking system of the anti-theft system; (b2) effecting a second data communication between the key and the control device, during which second coded data for deactivation of an alarm system is exchanged; (b2) delaying the triggering of the alarm system for a first time period; c) after positive evaluation of the second coded data, deactivating the alarm system; and wherein the anti-theft system comprises an access authorization system, whereby further to an access authorization request and mechanical unlocking of at least one door lock is first executed after positive evaluation of the first coded data and whereby the alarm system is only deactivated after positive evaluation of the second coded data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An electronic anti-theft system comprising:
-
a) means for performing a first data communication between an electronic key and a control device of the anti-theft system, during which first coded data for authentication of the key is exchanged; (b) means for, immediately after the positive evaluation of the first coded data, (b1) initiating the mechanical unlocking of a locking system of the anti-theft system; (b2) effecting a second data communication between the key and the control device, during which second coded data for deactivation of an alarm system is exchanged; and (b3) delaying the triggering of the alarm system for a first time period; c) means for, after positive evaluation of the second coded data, deactivating the alarm system; and wherein the anti-theft system comprises an access authorization system, whereby further to an access authorization request and mechanical unlocking of at least one door lock is first executed after positive evaluation of the first coded data and whereby the alarm system is only deactivated after positive evaluation of the second coded data. - View Dependent Claims (14, 15, 16)
-
Specification