公开(公告)号：US20240330613A1

公开(公告)日：2024-10-03

申请号：US18370118

申请日：2023-09-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minhyeok KANG ,  Sanghyo LEE

IPC: G06K7/016 ,  G06K7/00

CPC classification number: G06K7/0166 ,  G06K7/0008

Abstract: The present disclosure provides systems and devices including reception circuits for communications between smart cards and card readers. In some embodiments, a reception circuit of a smart card includes a first circuit and a second circuit. The first circuit is configured to receive a wireless signal including a pause, and restore the wireless signal to a clock signal. The second circuit is configured to charge a voltage of a first node based on a first logic level of the clock signal, compare the voltage of the first node with a predefined reference voltage, and output, based on the comparison of the voltage of the first node, a synchronization signal indicating a rising starting time point of the pause of the wireless signal.

公开(公告)号：US20240242059A1

公开(公告)日：2024-07-18

申请号：US18356292

申请日：2023-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyeongdo KIM ,  Minhyeok KANG

IPC: G06K19/077 ,  G05F1/575

CPC classification number: G06K19/07773 ,  G05F1/575 ,  H02M7/06

Abstract: A smart card may include: an antenna configured to receive at least one radio signal;
a load circuit that is connected to both ends of the antenna; a rectifier configured to rectify the at least one radio signal received through the antenna, and provide the rectified signal to an output terminal; and a power generator including a voltage regulator, a first diode, and a second diode, the voltage regulator configured to provide an internal voltage, the first diode and the second diode connected in series between the output terminal of the rectifier and a first node, and the first node is configured to receive the internal voltage during a first mode of the smart card, the first mode being a mode during which a load of the load circuit is modulated.

公开(公告)号：US20200232796A1

公开(公告)日：2020-07-23

申请号：US16526302

申请日：2019-07-30

Applicant: Samsung Electronics Co., Ltd. ,  Seoul National University R&DB Foundation

Inventor： Yonggwon LEE ,  Taekyoung KWON ,  Minhyeok KANG ,  Myeongcheol KWAK ,  Taeheon PARK

IPC: G01C21/18 ,  G01P15/18 ,  G01R33/02 ,  G01C25/00

Abstract: An electronic apparatus is provided. The electronic apparatus includes an acceleration sensor, a gyro sensor, a geomagnetic sensor, and a processor configured to compare geomagnetic data of the geomagnetic sensor and gyro data of the gyro sensor and correct the gyro data, determine a first value based on a principal component analysis (PCA) of acceleration data of the acceleration sensor, and determine a second value based on a PCA of the gyro data, and estimate a moving direction of the electronic apparatus based on the first value and the second value.