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:
Jun. 09, 2009
Filed:
Nov. 15, 2005
Alain Brillon, Villeneuve Tolosane, FR;
Alain Brillon, Villeneuve Tolosane, FR;
Continental Automotive France, Toulouse, FR;
Abstract
In a method for protecting a motor vehicle, the vehicle is equipped with antennas such that each zone of the cabin is covered by at least two antennas, and with an electronic tag furnished with a device measuring three-dimensional orientation of the magnetic fields received by the electronic tag. A sequence of emissions that consists of a succession of magnetic fields emitted in succession in a given random order from the antennas of the vehicle is randomly determined. After the tag receives this magnetic field succession, a check is carried out to verify that the random emission order has indeed been complied with and that the orientation of the fields that is received by the tag conforms to the expected random orientation. Additionally, the amplitude of the fields can be randomly varied. Authorization to start the vehicle is granted if this random variation is actually received by the tag.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile