公开(公告)号：US11003973B2

公开(公告)日：2021-05-11

申请号：US16368162

申请日：2019-03-28

Applicant: STMicroelectronics S.r.l.

Inventor： Antonio Sismundo ,  Giuliano Filpi ,  Antonio Amoroso ,  Raffaele Caiazzo

IPC: G06K7/08 ,  G06K19/06 ,  G06K19/07 ,  G06K19/077 ,  H01Q7/00 ,  H04B5/00 ,  H01Q1/00 ,  H04W4/80

Abstract: A Near Field Communication (NFC) device, includes: a device support body comprising at least one antenna coil, an integrated circuit coupled to the at least one antenna coil; and a photoresistive circuit coupled to the at least one antenna coil and comprising a photo-resistance, the photoresistive circuit being configured to increase a resistance of the at least one antenna coil when the at least one photo-resistance is in its high resistance state in a dark condition.

公开(公告)号：US20190303736A1

公开(公告)日：2019-10-03

申请号：US16368162

申请日：2019-03-28

Applicant: STMicroelectronics S.r.l.

Inventor： Antonio Sismundo ,  Giuliano Filpi ,  Antonio Amoroso ,  Raffaele Caiazzo

IPC: G06K19/07 ,  H04B5/00 ,  G06K19/077 ,  H01Q7/00

Abstract: A Near Field Communication (NFC) device, includes: a device support body comprising at least one antenna coil, an integrated circuit coupled to the at least one antenna coil; and a photoresistive circuit coupled to the at least one antenna coil and comprising a photo-resistance, the photoresistive circuit being configured to increase a resistance of the at least one antenna coil when the at least one photo-resistance is in its high resistance state in a dark condition.