公开(公告)号：US20220140621A1

公开(公告)日：2022-05-05

申请号：US17389791

申请日：2021-07-30

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minkyu KWON ,  Sungkyu CHO

IPC: H02J7/00

Abstract: A charging integrated circuit (IC) includes: a connection circuit configured to selectively connect a first battery and a second battery to each other in series and in parallel; a first charger configured to charge the first battery and the second battery connected to each other in parallel in a first charging mode; and a second charger configured to charge the first battery and the second battery connected to each other in series in a second charging mode. The connection circuit may include: a first regulating circuit connected to the first battery in series and configured to regulate a first balancing current flowing to the first battery; and a second regulating circuit connected to the second battery in series and configured to regulate a second balancing current flowing to the second battery.

公开(公告)号：US20210075244A1

公开(公告)日：2021-03-11

申请号：US16847840

申请日：2020-04-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungkyu CHO ,  Minkyu KWON ,  Taesun YOU ,  Sungwoo LEE ,  Taejin JEONG ,  Daewoong CHO

IPC: H02J7/00

Abstract: A charging management chip includes a switching charging circuit and a direct charging circuit. The switching charging circuit receives charging power, and passes through the charging power to a first node, and charges a battery according to a switching charging method and controls generation of a system voltage provided to an electronic system. The direct charging circuit receives the charging power applied to the first node via an input node, and charges the battery according to a direct charging method by providing the charging power to an output node based on a switching circuit therein. The switching charging circuit charges the battery through a first charging path including an inductor arranged outside the charging management chip, and the direct charging circuit charges the battery through a second charging path through which the charging power transferred to the output node is directly provided to the battery.

公开(公告)号：US20240146178A1

公开(公告)日：2024-05-02

申请号：US18220964

申请日：2023-07-12

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungkyu CHO ,  Kyeseok YOON ,  Dongjoon KIM ,  Sungwoo LEE ,  Daewoong CHO ,  Jungwook HEO

IPC: H02M1/088 ,  H02M1/00 ,  H02M1/14 ,  H02M3/158

CPC classification number: H02M1/088 ,  H02M1/0025 ,  H02M1/0054 ,  H02M1/14 ,  H02M3/158 ,  H03K3/037

Abstract: A voltage converter, including a switch circuit configured to generate an output voltage by switching an input voltage and a ground voltage based on a driving control signal; an error voltage generator configured to generate an error voltage based on a comparison between the output voltage and a reference voltage; a duty signal generator configured to generate a duty signal having a constant pulse frequency or a modulated pulse frequency, based on a result of the comparing; and a driving controller configured to generate the driving control signal based on the duty signal.

公开(公告)号：US20230180007A1

公开(公告)日：2023-06-08

申请号：US17923094

申请日：2021-05-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jieun KEUM ,  Sehee HAN ,  Sungkyu CHO

IPC: H04W12/30 ,  H04W4/80 ,  H04W4/50

CPC classification number: H04W12/35 ,  H04W4/80 ,  H04W4/50

Abstract: According to an embodiment, a method, performed by an electronic device, of providing a ranging-based service may include: transmitting, from a service application installed in the electronic device to a framework, information related to service data, the information related to the service data including a service deployment case and information about a storage location of the service data; when the electronic device approaches a reader device, receiving first data from the reader device; setting up a secure channel with the reader device by using information stored in a common applet identified based on the first data, the common applet being installed in a secure component of the electronic device; and transmitting the service data to the reader device, based on second data received from the reader device.

公开(公告)号：US20230155996A1

公开(公告)日：2023-05-18

申请号：US18100251

申请日：2023-01-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungkyu CHO ,  Jieun KEUM ,  Sehee HAN ,  Eunyoung KWON ,  Daehaeng CHO

IPC: H04L9/40

CPC classification number: H04L63/0823 ,  H04L63/0876 ,  H04L63/20 ,  H04L63/107 ,  H04L63/045

Abstract: Provided is a method, performed by an electronic device, of managing keys for accessing a plurality of services. The method includes transmitting, by a secure domain (SD) in a secure area of the electronic device, a certificate of the SD to a plurality of service providers (SPs); receiving, by an application installed in the electronic device, a certificate of each of the plurality of SPs from the plurality of SPs; receiving, by the application, first signed data from a first SP among the plurality of SPs; authenticating, by the application, the first signed data by using a certificate of the first SP received from the first SP and obtaining an encrypted key of the first SP from the first signed data; decrypting, by the SD, the encrypted key of the first SP by using a private key of the SD; and storing the decrypted key of the first SP in a first instance corresponding to the first SP among a plurality of instances of the SD.

公开(公告)号：US20230014199A1

公开(公告)日：2023-01-19

申请号：US17783119

申请日：2020-12-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kangjin YOON ,  Sungkyu CHO ,  Sehee HAN ,  Moonseok KANG ,  Hyunchul KIM ,  Yi YANG ,  Sungjun LIM

IPC: H04L9/06 ,  H04L9/08 ,  H04L9/32 ,  H04W12/03 ,  G01S13/02

Abstract: Provided is a method of an electronic device for performing ultra wide band (UWB) communication. The method includes receiving upper bit information including pre-set at least one parameter via a UWB command interface (UCI), obtaining slot count information and key information including a constant key value, and performing static scrambled timestamp sequence (STS) generation, based on the upper bit information, the slot count information, and the key information.

公开(公告)号：US20210203380A1

公开(公告)日：2021-07-01

申请号：US17001988

申请日：2020-08-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sungwoo LEE ,  Hyoungseok OH ,  Minkyu KWON ,  Sungkyu CHO

IPC: H04B3/56 ,  H04B3/02

Abstract: A first mobile device including a connection terminal configured to electrically connect to a second mobile device, a variable impedance device connected to the connection terminal, the variable impedance device configured to vary an impedance, processing circuitry configured to determine a power line communication (PLC) mode between the first mobile device and the second mobile device to be one of a low-speed PLC mode or a high-speed PLC mode, and control the impedance of the variable impedance device according to the determined PLC mode, and a PLC modem configured to receive power from the second mobile device or communicate data with the second mobile device based on the determined PLC mode.