The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2005
Filed:
Jul. 22, 2004
Michael Geber, Bad Urach, DE;
Uwe Hipp, Inzigkofen-Engelwies, DE;
Johannes Mattes, Friedingen, DE;
Karl Mueller, Rottweil-Neufra, DE;
Andreas Pohlmann, Weil der Stadt, DE;
Matthias Reinhardt, Sindelfingen, DE;
Markus Ruther, Ostfildern, DE;
Dietmar Weisser, Tuttlingen, DE;
Michael Geber, Bad Urach, DE;
Uwe Hipp, Inzigkofen-Engelwies, DE;
Johannes Mattes, Friedingen, DE;
Karl Mueller, Rottweil-Neufra, DE;
Andreas Pohlmann, Weil der Stadt, DE;
Matthias Reinhardt, Sindelfingen, DE;
Markus Ruther, Ostfildern, DE;
Dietmar Weisser, Tuttlingen, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
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.