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:
May. 05, 2020
Filed:
Jun. 15, 2018
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Fredrik Hocke, Munich, DE;
Helmut Wagatha, Oberschleissheim, DE;
Stefan Heinbockel, Munich, DE;
Ralf Wistorf, Munich, DE;
Bayerische Motoren Wekre Aktiengesellschaft, Munich, DE;
Abstract
A method for authorizing the use of a motor vehicle by a portable identification transmitter is provided. According to the method, a first vehicle antenna emits a first signal and a second vehicle antenna emits a second signal. An identification transmitter determines at least one of the spatial components of first and second electromagnetic fields, respectively, of the first and second signals. The identification transmitter transmits a measure or a value for the at least one spatial component of the first electromagnetic field, and a measure or a value for the at least one spatial component of the second electromagnetic field to the motor vehicle. A computer determines an angle between the spatial components of the first and second electromagnetic fields. The motor vehicle transmits an authorization signal for authorizing use of the motor vehicle only if the angle exceeds a predetermined threshold value.