Daimler Chrysler Ag

Marquardt Gmbh

Uwe Hipp

Michael Geber

Matthias Reinhardt

Karl Mueller

Dietmar Weisser

Andreas Pohlmann

Markus Ruther

Johannes Mattes

Wolfgang Stehle

Karl Müller

A locking system for providing authorization to access and drive a motor vehicle has a first control device for unlocking and locking the car doors, the ignition lock, the steering wheel lock, etc. Additionally, the locking system has a second device, which is an electronic key or an identifier. The two devices have transmission means and/or receiving means for electromagnetic signals with frequencies &#x3bd; lying in a frequency band between two cut-off frequencies &#x3bd;a, &#x3bd;b. At least one of the signals, transmitted between the devices, is a coded operating signal for authenticating the second device. The actual frequency &#x3bd;i with which the transmission means of the second device is operated is stored in a storage means of the first device.

Locking system, in particular for a motor vehicle

A system for automatic access or driving authorization for a motor vehicle includes a first device in the form of a control device having at least two states for engaging and disengaging vehicle door locks, an immobilizer, or the like. An associated second device is provided in the form of an electronic key, an ID transmitter, a chip card or the like. Both devices have means for transmitting or receiving signals, including a coded operating signal for authenticating the second device, so that a change in the state of the first device can be implemented when the second device is authorized. Before the second device is first activated, it is in a sleep state in which operation-independent function is not permitted and energy consumption is reduced. During a first operator-dependent authentication, the second device is changed over from the sleep state into a standby state in which an operation-independent function is at least partially made possible.

Locking system for a motor vehicle

Growing community of inventors

Munich, Georgia

Uwe Hipp