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公开(公告)号：US11509157B2
公开(公告)日：2022-11-22
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.
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公开(公告)号：US11329694B2
公开(公告)日：2022-05-10
申请号：US17001988
申请日：2020-08-25
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sungwoo Lee , Hyoungseok Oh , Minkyu Kwon , Sungkyu Cho
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.
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公开(公告)号：US11848690B2
公开(公告)日：2023-12-19
申请号：US17739342
申请日：2022-05-09
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sungwoo Lee , Hyoungseok Oh , Minkyu Kwon , Sungkyu Cho
CPC classification number: H04B3/56 , H04B3/02 , H04B2203/5425 , H04B2203/5483 , H04B2203/5491
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.
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公开(公告)号：US11563730B2
公开(公告)日：2023-01-24
申请号：US17113969
申请日：2020-12-07
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sungkyu Cho , Jieun Keum , Sehee Han , Eunyoung Kwon , Daehaeng Cho
Abstract: Provided is a method, performed by an electronic device, of managing keys for accessing a plurality of services in an integrated manner to improve interoperability and secure security. 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.
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公开(公告)号：US12238524B2
公开(公告)日：2025-02-25
申请号：US17923094
申请日：2021-05-21
Applicant: Samsung Electronics Co., Ltd.
Inventor： Jieun Keum , Sehee Han , Sungkyu Cho
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.
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Patent Agency Ranking
6.发明授权公开(公告)号：US12160125B2
公开(公告)日：2024-12-03
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.
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公开(公告)号：US09882480B2
公开(公告)日：2018-01-30
申请号：US15139715
申请日：2016-04-27
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Sungwoo Lee , Minkyu Kwon , Hocheol Chung , Sungkyu Cho
Abstract: A voltage converter includes a power switching unit and an indirect sensing circuit. The power switching unit includes a plurality of power switches and a capacitor. The indirect sensing circuit receives an input voltage, a first voltage at a first node of the capacitor, and a second voltage at a second node of the capacitor, and generates first and second sensing output voltages based on the input voltage and the first and second voltages. A voltage difference between the first and second voltages is equal to a fractional multiple of the input voltage.
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公开(公告)号：US12245024B2
公开(公告)日：2025-03-04
申请号：US17746316
申请日：2022-05-17
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sehee Han , Sungkyu Cho
IPC: H04W12/03 , H04B1/7163 , H04L9/32
Abstract: Disclosed is a method for ultra-wide band (UWB) security ranging and a UWB device configured to perform secure ranging. The method includes obtaining, from a UWB sub-system of the UWB device, first encryption data including a symmetric key encrypted with a public key of a secure application of the UWB device; transferring the first encryption data to the secure application; obtaining, from the secure application, second encryption data including a ranging data set (RDS) encrypted with the symmetric key; and transferring the second encryption data to the UWB sub-system. In this case, the RDS may include a ranging session key configured to secure a UWB ranging session, and the secure application may be included in a trusted execution environment area.
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公开(公告)号：US12120105B2
公开(公告)日：2024-10-15
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 , H04L63/045 , H04L63/0876 , H04L63/107 , H04L63/20
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.
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公开(公告)号：US20210176230A1
公开(公告)日：2021-06-10
申请号：US17113969
申请日：2020-12-07
Applicant: Samsung Electronics Co., Ltd.
Inventor： Sungkyu Cho , Jieun Keum , Sehee Han , Eunyoung Kwon , Daehaeng Cho
IPC: H04L29/06
Abstract: Provided is a method, performed by an electronic device, of managing keys for accessing a plurality of services in an integrated manner to improve interoperability and secure security. 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.
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