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. 19, 2026
Filed:
Jul. 26, 2024
Nxp B.v., Eindhoven, NL;
Reinhard Meindl, Graz, AT;
Peter Thüringer, Graz, AT;
NXP B.V., Eindhoven, NL;
Abstract
The disclosure relates to performing a proximity check to determine whether a transponder device is in proximity of a reader device. In an example embodiment, a method of performing a proximity check to determine whether a transponder device is in proximity of a reader device comprises: transmitting a command from the reader device to the transponder device, the command including a request for a measured response time for a number n of previous command-response exchanges stored by the transponder device; in response to receiving the command at the transponder device, transmitting a response to the reader device, the response including a measured response time stored by the transponder device for the previous n command-response exchanges; and determining whether a predetermined criterion for the proximity check is fulfilled by comparing a measured response time stored by the reader device with the measured response time transmitted by the transponder device in the response.