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. 18, 2019
Filed:
Sep. 13, 2018
Nxp B.v., Eindhoven, NL;
Wolfgang Eber, Graz, AT;
Bernhard Spiess, Graz, AT;
Marcin Tomasz Bawolski, Graz, AT;
Matja{hacek over (z)} Gu{hacek over (s)}tin, Graz, AT;
NXP B.V., Eindhoven, NL;
Abstract
Disclosed are: a mobile device, in particular a mobile Passive Keyless Entry, PKE, key device, and an associated method for providing 3D field values of a magnetic field H; an evaluation device for use in a PKE system having a Mobile device and an associated method for determining the direction of a magnetic field vector H=(x, y, z), which is present locally at a position of a 3D antenna of the mobile device; and a PKE system having a PKE base structure, to which preferably the mobile device is associated and which has at least a first base structure antenna, which is operable to emit the, particularly low frequency, magnetic field, the mobile PKE device and the evaluation unit. The mobile device and the associated method are characterized by providing, in addition to providing a first, second and third value v, v, and vindicative of the local X-component x, Y-component y, and Z-component x of the magnetic field vector H, a sum value vindicative of the sum |S|=|x+y+z| of the local X-, Y-, and Z-components of the magnetic field vector H. The evaluation device and the associated method are characterized by providing the vector V yielded as a vector, which has the direction of the magnetic field vector H, and may be capable to discriminate, if a one-dimensional Relay Station Attack has occurred or if a regular wireless connection has been established between the PKE base structure and the associated mobile device.