Method for controlling access to a vehicle
First Claim
1. A method for controlling access to a vehicle, comprising the following steps:
- sending a periodic request signal from the vehicle to a mobile ID transmitter;
in response to receiving the periodic request signal from the vehicle, the mobile ID transmitter transmitting a response signal including an identifier to the vehicle;
the vehicle authorizing the mobile ID transmitter based on the identifier received from mobile ID transmitter;
in response to authorizing the mobile ID transmitter, the vehicle sending an authentication request to the mobile ID transmitter;
in response to receiving the authentication request from the vehicle, the mobile ID transmitter transmitting an authentication response including an authentication code to the vehicle;
the vehicle confirming the authentication code received from mobile ID transmitter, and in response, sending an authentication signal to the mobile ID transmitter, with which signal the ID transmitter is authorized to unlock the vehicle;
the mobile ID transmitter determining the distance from the valid mobile ID transmitter to the vehicle;
the mobile ID transmitter determining whether the determined distance is below a predetermined first proximity distance;
in response to determining that the determined distance is below the predetermined first proximity distance, the mobile ID transmitter transmitting an unlock signal from the valid authorized mobile ID transmitter to the vehicle, such that the process for unlocking the vehicle includes at least the three message exchanges of (a) the periodic request signal from the vehicle answered by the response signal from the mobile ID transmitter, (b) the authentication request from the vehicle answered by the authentication response from the mobile ID transmitter, and (c) the authentication signal from the vehicle followed by the unlock signal from the mobile ID transmitter.
3 Assignments
0 Petitions
Accused Products
Abstract
In a method for controlling access to a vehicle (FZ), first an authentication signal is sent from the vehicle to an authorized mobile ID transmitter (IDG), with which authentication signal the ID transmitter is authorized to unlock the vehicle. Subsequently, the distance from the valid authorized mobile ID transmitter to the vehicle is determined. Finally, an unlock signal (ES) is transmitted from the valid authorized mobile ID transmitter to the vehicle, if the distance from the ID transmitter to the vehicle is less than a predetermined first proximity distance (ANRE). In this way an efficient control of access to a vehicle is achieved, wherein the mobile ID transmitter automatically unlocks the vehicle when a certain proximity to the vehicle is identified.
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Citations
13 Claims
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1. A method for controlling access to a vehicle, comprising the following steps:
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sending a periodic request signal from the vehicle to a mobile ID transmitter; in response to receiving the periodic request signal from the vehicle, the mobile ID transmitter transmitting a response signal including an identifier to the vehicle; the vehicle authorizing the mobile ID transmitter based on the identifier received from mobile ID transmitter; in response to authorizing the mobile ID transmitter, the vehicle sending an authentication request to the mobile ID transmitter; in response to receiving the authentication request from the vehicle, the mobile ID transmitter transmitting an authentication response including an authentication code to the vehicle; the vehicle confirming the authentication code received from mobile ID transmitter, and in response, sending an authentication signal to the mobile ID transmitter, with which signal the ID transmitter is authorized to unlock the vehicle; the mobile ID transmitter determining the distance from the valid mobile ID transmitter to the vehicle; the mobile ID transmitter determining whether the determined distance is below a predetermined first proximity distance; in response to determining that the determined distance is below the predetermined first proximity distance, the mobile ID transmitter transmitting an unlock signal from the valid authorized mobile ID transmitter to the vehicle, such that the process for unlocking the vehicle includes at least the three message exchanges of (a) the periodic request signal from the vehicle answered by the response signal from the mobile ID transmitter, (b) the authentication request from the vehicle answered by the authentication response from the mobile ID transmitter, and (c) the authentication signal from the vehicle followed by the unlock signal from the mobile ID transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An access system for a vehicle, comprising:
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a send/receive device on the vehicle for; (a) sending a periodic request signal to a mobile ID transmitter; (b) sending an authentication request to the mobile ID transmitter after the vehicle authorizes the mobile ID transmitter based on an identifier received from mobile ID transmitter in response to the periodic request signal; and (c) sending an authentication signal to an mobile ID transmitter, through which signal the ID transmitter is authorized to unlock the vehicle, the authentication signal sent after the vehicle confirms an authentication code received from mobile ID transmitter in response to the authentication request; and the mobile ID transmitter comprising; a send/receive device on the ID transmitter; and a distance determining device for determining the distance between the mobile ID transmitter and the corresponding vehicle; wherein the send/receive device on the ID transmitter is operable for; (a) sending a response signal including the identifier to the vehicle, in response to the periodic request signal received from the vehicle; (b) sending an authentication response including the authentication code to the vehicle, in response the authentication request received from the vehicle; and (c) sending an unlock signal to the vehicle, after it has received the authentication signal and a distance less than a first predetermined proximity distance has been determined. - View Dependent Claims (9, 10, 11, 12)
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13. A car comprising:
an access system with; a send/receive device on the vehicle for; (a) sending a periodic request signal to a mobile ID transmitter; (b) sending an authentication request to the mobile ID transmitter after the vehicle authorizes the mobile ID transmitter based on an identifier received from mobile ID transmitter in response to the periodic request signal; and (c) sending an authentication signal to an mobile ID transmitter, through which signal the ID transmitter is authorized to unlock the vehicle, the authentication signal sent after the vehicle confirms an authentication code received from mobile ID transmitter in response to the authentication request; and the mobile ID transmitter comprising; a send/receive device on the ID transmitter; and a distance determining device for determining the distance between the mobile ID transmitter and the corresponding vehicle; wherein the send/receive device on the ID transmitter is operable for; (a) sending a response signal including the identifier to the vehicle, in response to the periodic request signal received from the vehicle; (b) sending an authentication response including the authentication code to the vehicle, in response the authentication request received from the vehicle; and (c) sending an unlock signal to the vehicle, after it has received the authentication signal and a distance less than a first predetermined proximity distance has been determined.
Specification