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:
Oct. 14, 2025
Filed:
May. 06, 2023
Nxp B.v., Eindhoven, NL;
Pouyan Ebrahimbabaie Varnosfaderani, Graz, AT;
Johannes Stahl, Graz, AT;
Ulrich Andreas Muehlmann, Graz, AT;
NXP B.V., Eindhoven, NL;
Abstract
A device may include a data storage device storing a first look-up table that contains a plurality of distance mappings that each associate a value of a first signal feature with a distance value. An NFC reader is configured to communicate with an NFC tag includes: an antenna, a transmitter that is configured to use the antenna to transmit a radio frequency transmitted field, a receiver configured to receive from the antenna one or more response signals in response to the radio frequency transmitted field transmitted by the transmitter, and a signal processor configured to: process the one or more response signals to determine a first value of the first signal feature, access the first look-up table to determine a first distance mapping that associates the value of the first signal feature with a first distance, and generate an output signal based upon the first distance.