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:
Sep. 01, 2009
Filed:
Jul. 28, 2006
Staas Gietzen, Sternenfels, DE;
Thomas Hartmann, Altdorf, DE;
Juergen Luka, Tamm, DE;
Sylvain Subileau, Esslingen, DE;
Hermann Von Hasseln, Filderstadt, DE;
Staas Gietzen, Sternenfels, DE;
Thomas Hartmann, Altdorf, DE;
Juergen Luka, Tamm, DE;
Sylvain Subileau, Esslingen, DE;
Hermann Von Hasseln, Filderstadt, DE;
Daimler AG, Stuttgart, DE;
Abstract
A driving authorization system comprises an electronic immobilizer function which is coupled to a rotary shaft sensor. The rotary shaft sensor senses the position and/or rotational speed of the rotary shaft by means of a pickup wheel arranged on a rotary shaft, and transmits that information to a vehicle control unit which enables the electronic immobilizer function. According to the invention, the pickup wheel comprises a predefined number of teeth which are arranged distributed along the circumference of the pickup wheel according to a code, and an encoded rotational speed signal which is picked up by the rotary shaft sensor and can be decoded by the vehicle control unit. The vehicle control unit enables the immobilizer function only after successful decoding of the encoded rotational speed signal. A synchronization time for detecting a specific position of the rotary shaft is part of the encoded rotational speed signal.