US 11,889,397 B2
Method and device for managing information exchange between a main element, for example, an NFC controller, and a set of at least two auxiliary elements
Thierry Meziache, Sainte Baume (FR); Pierre Rizzo, Trets (FR); Alexandre Charles, Auriol (FR); and Juergen Boehler, Munich (DE)
Assigned to STMicroelectronics (Rousset) SAS, Rousset (FR); and STMICROELECTRONICS GMBH, Aschheim-Dornach (DE)
Filed by STMicroelectronics (Rousset) SAS, Rousset (FR); and STMICROELECTRONICS GMBH, Aschheim-Dornach (DE)
Filed on Jan. 27, 2022, as Appl. No. 17/649,146.
Application 17/649,146 is a continuation of application No. 16/719,640, filed on Dec. 18, 2019, granted, now 11,272,338.
Application 16/719,640 is a continuation of application No. 15/994,607, filed on May 31, 2018, granted, now 10,536,836, issued on Jan. 14, 2020.
Application 15/994,607 is a continuation of application No. 15/335,636, filed on Oct. 27, 2016, granted, now 10,244,372, issued on Mar. 26, 2019.
Application 15/335,636 is a continuation of application No. 13/994,283, granted, now 9,515,701, issued on Dec. 6, 2016, previously published as PCT/EP2011/072474, filed on Dec. 12, 2011.
Claims priority of application No. 10306416 (EP), filed on Dec. 15, 2010; and application No. 11305359 (EP), filed on Mar. 30, 2011.
Prior Publication US 2022/0150680 A1, May 12, 2022
Int. Cl. H04W 4/80 (2018.01); G06K 7/00 (2006.01); G06K 7/10 (2006.01); H04B 5/00 (2006.01)
CPC H04W 4/80 (2018.02) [G06K 7/0008 (2013.01); G06K 7/10237 (2013.01); G06K 7/10247 (2013.01); H04B 5/0031 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating a near field communication (NFC) controller in a circuit, the circuit comprising a first Universal Integrated Circuit Card (UICC) and a second UICC, the method comprising:
receiving, by the NFC controller, a low-power mode indicator from a main processor, the low-power mode indicator designating an operation of the first UICC in a low-power operating mode, the second UICC being powered OFF when the first UICC is in the low-power operating mode;
transmitting, by the NFC controller, the low-power mode indicator to the first UICC causing an auxiliary processor of the first UICC to retrieve a configuration indicator from an auxiliary memory of the first UICC, the first UICC using the configuration indicator to switch a single wire protocol (SWP) link for operating the first UICC in the low-power operating mode; and
communicating, by the NFC controller, in the low-power operating mode with the first UICC, wherein the first UICC is powered by the NFC controller in the low-power operating mode.