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:
Nov. 08, 2022
Filed:
Apr. 17, 2019
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Daniel Knobloch, Munich, DE;
Alexander Krebs, Munich, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A method for determining an occupied region of a first radio device is provided. According to the method, a signal is transmitted from the first radio device and received by at least two additional radio devices. Based on a propagation time of the signal from the first radio device to the additional radio devices, a surrounding region is determined around each of the additional radio devices in which the first radio device is located. The occupied region of the first radio device is determined based on an overlapping region which results from an overlapping of all surrounding regions. Alternatively, signals can also be transmitted from the additional radio devices and received by the first radio device. The method can be used to determine whether an automobile key having a radio transmitter is located in a vehicle.