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:
Apr. 07, 2020
Filed:
Sep. 21, 2018
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Fredrik Hocke, Munich, DE;
Ralf Wistorf, Munich, DE;
Stefan Heinbockel, Munich, DE;
Helmut Wagatha, Oberschleissheim, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A method for authorizing the use of a motor vehicle having a first and second antenna spatially remote from one another, includes emitting, from the first vehicle antenna, a first signal that is received by an identification transmitter antenna of a portable identification transmitter. The method also includes establishing at least one spatial component of a first electromagnetic field of the received first signal using an angle-resolving magnetic field sensor, emitting, by the second vehicle antenna, a second signal that is received by the portable identification transmitter antenna, and establishing at least one spatial component of the second electromagnetic field of the received second signal using the angle-resolving magnetic field sensor. The method also includes establishing an angle at least between the established at least one spatial component of the first electromagnetic field and the established at least one spatial component of the second electromagnetic field, and providing a first authorization signal for authorizing the use of the motor vehicle when the established angle exceeds a predetermined threshold value.