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:
Oct. 11, 2005
Filed:
Sep. 22, 2000
Michael Meier, Hildesheim, DE;
Stephan Schmitz, Cologne, DE;
Andreas Titze, Braunschweig, DE;
Dominique Nemetschek, Braunschweig, DE;
Michael Meier, Hildesheim, DE;
Stephan Schmitz, Cologne, DE;
Andreas Titze, Braunschweig, DE;
Dominique Nemetschek, Braunschweig, DE;
Volkswagen AG, Wolfsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method is for controlling entry, e.g., into a motor vehicle, during which a key and a base station wirelessly exchange authentication data between one another in an active or a passive communication mode. At the beginning of the authentication process, the base station transmits a call signal to the key, and the key replies to the call signal with a reply signal. The base station verifies the received reply signal of the key in the communications mode in which the reply signal was received. If the reply signal of the key was received in the active communications mode, the base station transmits a first selection instruction to the key thus causing the key to perform the subsequent communication in the active communications mode. If the reply signal of the key was received in the passive communications mode, the base station transmits a second selection instruction to the key thus causing the electronic key to perform the subsequent communication in the passive communications mode.