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:
Feb. 27, 2024
Filed:
Jun. 04, 2021
Vitesco Technologies Gmbh, Hannover, DE;
VITESCO TECHNOLOGIES GMBH, Hanover, DE;
Abstract
A device for a presence detection system for detecting the presence of a user close to a motor vehicle is configured to: activate a piezoelectric element during an 'awake' time interval to stabilize the piezoelectric element; then, control the supply of voltage to an oscillator and supply the oscillator with a reference electrical signal forming a current voltage reference, so the transceiver circuit transmits a signal during what is called a “transmission” time interval; during the transmission time interval, measure the frequency of a reflected signal resulting from the transmitted signal, measure the frequency of the transmitted signal, and determine a corrected reference based on the measured frequency of the transmitted signal, allowing the oscillator to operate at a target frequency value. This allows limiting the energy consumption of a transceiver device used to detect the presence of a user close to a motor vehicle.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile