Volkswagen Ag

Hella Kgaa Hueck and Company

Audi Ag

Marquardt Gmbh

Andreas Thiele

Christoph Fricke

Dietmar Grave

Bernd Ette

Oliver Muth

Ludger Weghaus

Karl Mueller

Andreas Titze

Frank Müller

Ruben Maier

Ralf Borngräber

Hannes Haupt

Dominique Nemetschek

Karsten Beyer

Martin Reimann

Julian Verkin

Klaus Revermann

Peter Lohmann

Karl Müller

Mirko Langnickel

Stefan Werner

Lothar Scharwald

Gerd Stauss

Ralf Maier

Jan-Peter Dietz

Maik Müller

A method for calibrating a radio-based keyless access system of a transportation vehicle, an access system, and a corresponding transportation vehicle. Based on a measured field strength of an LF field, it is determined whether the signal transmitter is located at most at a specified distance from the transportation vehicle. A second transmission device emits a higher-frequency calibration signal in response to which the signal transmitter transmits a response signal back to the transportation vehicle. A reference distance from the signal transmitter to the transportation vehicle is automatically determined from the propagation time of the calibration signal and the response signal. The measured LF field strength-based determination of whether the signal transmitter is located at most at a specified distance from the transportation vehicle is then calibrated automatically based on the determined reference distance.

Method for calibrating a radio-based keyless access system of a motor vehicle, access system, and motor vehicle

The performance of an action for a transportation vehicle, wherein a relay attack is prevented. In response to a transmission of a first radio signal at a first frequency, on the one hand, a second radio signal at a second frequency is received from an ID transponder authorized for the transportation vehicle and, on the other hand, a further radio signal at the first frequency is received. The action is performed for the transportation vehicle only in response to the second radio signal originating from an ID transponder authorized for the transportation vehicle and only in response to the signal strength of the further radio signal lying below a predefined signal strength threshold.

Defense of a relay station attack

An apparatus, a key partner, methods and computer programs for a key module of a vehicle and a vehicle. The apparatus for the key module includes a communication interface for radio communication with a key partner of the vehicle, a motion sensor, and a control module for controlling an operating state from operating states of the key module based on the information about the motion of the key module. The operating states include at least a first operating state, a pre-shutdown operating state and a shutdown state. The control module activates the first operating state if the motion of the key module is above a motion limit value and activates the pre-shutdown operating state if the motion of the key module is below the motion limit value over a period of time.

Apparatus, key remote, and method for controlling operating conditions of a key module

In a method and a device () for actuating a door or flap () of a vehicle (), the door or flap (), if it is closed, is automatically opened or, if it is open, is automatically closed if a movement of an object with at least one change in direction is detected outside the vehicle () and at the same time a key () assigned to the vehicle () is detected.

Method and device for actuating a door or a flap of a vehicle

A first operator control function is activated if it is detected by means of a first sensor that a first physical variable is higher than a predetermined first threshold value. In a similar way, a second operator control function is activated if it is detected by means of a second sensor that a second physical variable is higher than a predetermined second threshold value. A third operator control function is activated if it is detected by means of the first sensor that the first physical variable is higher than a predetermined third threshold value and if at the same time it is detected by means of the second sensor that the second physical variable is higher than a predetermined fourth threshold value, the third threshold value being higher than the first threshold value.

Operator control method and operator control device for a vehicle

An electric steering lock for a drive authorization system in a motor vehicle, including a movable locking element which, according to a first position, can be brought into locking engagement with a latched-in position on the steering shaft in the steering wheel column and, according to a second position, can be brought out of locking engagement with said position. The steering lock also has a drive for moving the locking element between the two positions, and electronics for controlling the drive. The system may have an associated second device in the form of an electronic key, an identification (ID) transmitter, a chip card or the like, with the result that, when the second device is authorized, the drive can be controlled into the respective position by the electronics. The electronics generate those signals which are used to trigger functions which can otherwise be effected by an electric ignition lock.

Electric steering lock, in particular for a motor vehicle

Growing community of inventors

Wolfsburg, Germany

Andreas Thiele