	US 12,141,636 B2
	RFID tag IC with standard-adapted counter increment, and RFID communication system
Christian Schwar, Graz (AT); Christian Weidinger, Graz (AT); Franz Amtmann, Graz (AT); Heinz Umfahrer, Graz (AT); Christoph Hans Joachim Garbe, Neu Wulmstorf (DE); and Thomas Pichler, Graz (AT)
Assigned to NXP B.V., Eindhoven (NL)
Filed by NXP B.V., Eindhoven (NL)
Filed on Mar. 16, 2022, as Appl. No. 17/655,113.
Claims priority of application No. 21168131 (EP), filed on Apr. 13, 2021.
Prior Publication US 2022/0327341 A1, Oct. 13, 2022
Int. Cl. G06K 19/077 (2006.01); G06K 7/10 (2006.01); G06Q 10/087 (2023.01); H04W 4/80 (2018.01)

CPC G06K 19/077 (2013.01) [G06K 7/10297 (2013.01); G06K 7/10346 (2013.01); H04W 4/80 (2018.02)]

16 Claims

1. A radio frequency identification (RFID) tag integrated circuit (IC), comprising:

a near field communication (NFC) interface configured to initiate a power-up, when coupled with an high frequency (HF) field, and

receive a read command from an RFID device;

a non-volatile memory, wherein the non-volatile memory is configured to store a counter value; and

a processing unit configured to

increment the counter value when coupled with the HF field,

set an increment flag, when the increment is successful, and thereby block a further increment of the counter value, and

reset the increment flag after fulfilling the read command.