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, 2024
Filed:
Apr. 05, 2022
Continental Automotive Technologies Gmbh, Hannover, DE;
Continental Automotive Technologies GmbH, Hannover, DE;
Abstract
A method for activating a function of a motor vehicle by an activation device on the vehicle having at least one communication unit including at least one radiofrequency antenna and transmission and reception device. The activation coming from a user's portable device. The activation of the function is triggered by detection of the user's presence in a predetermined zone around the vehicle and on the basis of a result of authentication of the portable device by the vehicle. For at least two responses received from the portable device: a) comparing, for each response, a power of a first wave received at a time with a maximum power of the components of the first wave received, b) determining, for each response, a presence or absence of reflected waves, c) determining an averaged reflection rate for the responses, d) determining a minimum value for the time from the responses, e) if the averaged reflection rate is zero or full, then the user's presence in the predetermined area is determined using the minimum value for the time, f) if the averaged reflection rate is partial, then the user's presence in the predetermined area is detected using the minimum value for the time, to which a corrective coefficient is applied.