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EP 4 217 864 A1

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(43) Date of publication: 02.08.2023 Bulletin 2023/31 (21) Application number: 21770041.8 (22) Date of filing: 20.09.2021

(51) International Patent Classification (IPC):  G06F 9/50(2006.01) G06F 9/48(2006.01) G06F 9/4401(2018.01) G06F 9/46(2006.01) G06F 12/02(2006.01) G06F 21/78(2013.01) (52) Cooperative Patent Classification (CPC): G06F 21/78; G06F 2221/2149; G06F 2212/205; G06F 9/441; G06F 12/0284; G06F 9/52 (86) International application number: PCT/EP2021/075780 (87) International publication number: WO 2022/063721 (31.03.2022 Gazette 2022/13)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.09.2020 FR 2009752 25.09.2020 FR 2009751 (71) Applicants: STMicroelectronics S.r.l. 20864 Agrate Brianza (MB) (IT) Proton World International N.V. 1831 Diegem (BE)

(72) Inventors: VAN NIEUWENHUYZE, Olivier 1970 Wezembeek-Oppem (BE) VENEROSO, Amedeo 81100 Caserta (IT) (74) Representative: Cabinet Beaumont  4, Place Robert Schuman B.P. 1529 38025 Grenoble Cedex 1 38025 Grenoble Cedex 1 (FR)