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:
Aug. 16, 2022
Filed:
May. 27, 2021
Stmicroelectronics Austria Gmbh, Graz, AT;
Gustavo Jose Henriques Patricio, Graz, AT;
Oliver Regenfelder, Graz, AT;
Ulrich Herrmann, Graz, AT;
Thomas Poetscher, Deutschfeistritz, AT;
STMICROELECTRONICS AUSTRIA GMBH, Graz, AT;
Abstract
An embodiment method comprises transmitting a reader carrier signal from a contactless reader to a contactless device, receiving by the reader, a device modulated carrier signal from the device, the device modulated carrier signal having a carrier frequency, preferably turning off by the reader, the transmission of the reader carrier signal during reception of the device modulated carrier signal, and after having turned off the transmission of the reader carrier signal, determining by the reader the presence or the absence at the reader's antenna of a modulated carrier signal having at the reader's antenna the carrier frequency with a tolerance, without relying on the data content of the modulated carrier signal.