US 12,175,314 B2
Contactless system and method for reducing electromagnetic disturbances of said contactless system
Benjamin Duval, Saint Maximin (FR); Olivier Fourquin, Fuveau (FR); Christophe Moreaux, Gardanne (FR); and Laurent Fabre, Aix en Provence (FR)
Assigned to THALES DIS FRANCE SAS, Meudon (FR)
Appl. No. 18/029,804
Filed by THALES DIS FRANCE SAS, Meudon (FR)
PCT Filed Sep. 30, 2021, PCT No. PCT/EP2021/077029
§ 371(c)(1), (2) Date Mar. 31, 2023,
PCT Pub. No. WO2022/069679, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 20315426 (EP), filed on Oct. 1, 2020.
Prior Publication US 2024/0062032 A1, Feb. 22, 2024
Int. Cl. G06K 19/07 (2006.01)
CPC G06K 19/0723 (2013.01) [G06K 19/0709 (2013.01); G06K 19/0715 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A contactless electronic system configured for alternating phases of contactless communications with a reader over an electromagnetic field field and processor execution phases and comprising a power supply, a current monitor, a processing system comprising a hardware processor configured for performing operations, a dynamic extra current loader and a clock generator, wherein the power supply includes a clamp circuit, and wherein, continuously until an end of each execution phase of said hardware processor:
said current monitor is configured for continuously reevaluating during the execution phase of the processor the maximal current Imax that can be provided by the power supply to the processing system from the electromagnetic field by comparing a current into the clamp circuit to at least one predetermined threshold,
said current monitor is configured for comparing said determined maximal current Imax and a current drawn by the processing system, referred to as, Iplatform,
said dynamic extra current loader is configured for drawing from the power supply in addition to the current drawn by the processing system, Iplatform, an extra current, referred to as, Iextra equal to a subtraction operation (Imax−Iplatform), when the current drawn by the processing system Iplatform is lower than the determined maximal current, referred to as, Imax,
wherein said dynamic extra current loader is an extra current from the power supply in addition to the current drawn by the processing system.