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Pat. 11469619 United States, Int. Cl.22 H02J 50/00, G06K 7/00, G06Q 20/20, G06Q 20/32, H02J 50/12, H02J 50/80, H02M 3/158, H04B 5/00. Signal power management circuits and smart cards including the same : Appl. N 17/318129 : Filed 12.05.2021 : Pub. 11.10.2022 : / Ju Ri Lee, Jun Ho Kim ; Assignee Samsung Electronics Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11469619/en?oq=US11469619.html (дата обращения: ДД.ММ.ГГГГ).