公开(公告)号：US20240322602A1

公开(公告)日：2024-09-26

申请号：US18680176

申请日：2024-05-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Beomwoo GU ,  Jaeseok PARK ,  Jaehyun PARK ,  Jaesun SHIN ,  Sungku YEO

IPC: H02J50/12

CPC classification number: H02J50/12

Abstract: An electronic device is provided. The electronic device includes a processor, a battery, and a wireless power transmission device, wherein the wireless power transmission device includes a power amplifier circuit including a switch circuit, a filter circuit, and a series resonant circuit, the power amplifier circuit being configured to convert direct current (DC) power received from the battery or a DC adapter into alternative current (AC) and to implement zero-voltage switching (ZVS), a power transmission circuit including a power transmission coil configured to transmit power received from the power amplifier circuit to outside, a matching circuit located between and connected to the power amplifier circuit and the power transmission circuit, the matching circuit being configured to match an impedance of the power amplifier circuit and the power transmission circuit, and a negative voltage detection circuit connected to the filter circuit of the power amplifier circuit and configured to detect a negative voltage generated in the filter circuit, and wherein the negative voltage detection circuit includes a voltage dividing circuit including a positive voltage power supply and a plurality of resistors, the voltage dividing circuit being configured to convert the negative voltage generated in the filter circuit of the power amplifier circuit into a positive voltage in a predetermined range, a voltage sensor configured to detect the positive voltage, and a low-pass filter located between and connected to the voltage dividing circuit and the voltage sensor.

公开(公告)号：US20220311285A1

公开(公告)日：2022-09-29

申请号：US17580186

申请日：2022-01-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chongmin LEE ,  Sungku YEO ,  Kangho BYUN ,  Jaesun SHIN ,  Jeongman LEE ,  Hyoseok HAN

IPC: H02J50/90 ,  H04W4/80 ,  H04B5/00 ,  H02J50/12

Abstract: An electronic device includes a power transmitter; a first communication interface configured to support an Ultra-Wideband (UWB) communication scheme; a second communication interface configured to support a Bluetooth communication scheme; and a processor configured to: control the first communication interface to transmit a first signal and receive a second signal corresponding to the first signal via the first communication interface, identify, based on a difference between a transmission time of the first signal and a reception time of the second signal, first location information of a first external device, control the power transmitter to transmit a first driving power having a first magnitude, based on a first distance between the first external device and the electronic device being within a first range, the first distance being identified based on the first location information, establish a Bluetooth communication connection with the first external device, based on receiving, via the second communication interface, a first packet transmitted from the first external device using the first driving power, after transmitting the first driving power, and control the power transmitter to transmit a first charging power having a second magnitude, after establishing the Bluetooth communication connection.

公开(公告)号：US20220028377A1

公开(公告)日：2022-01-27

申请号：US17309363

申请日：2019-11-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jaesun SHIN ,  Joonrae CHO ,  Jeongman LEE

IPC: G10L15/20 ,  G10L21/0216 ,  G10L15/22 ,  H04R1/32

Abstract: An electronic device and a method for controlling same are provided. The present electronic device comprises: a communication unit; and a processor configured to receive multiple audio signals via the communication unit, the multiple audio signals being acquired by multiple external electronic devices which have microphones, respectively, and which are positioned at different places, via microphones thereof, the processor being configured to determine at least one audio signal including a user voice uttered by a user among the multiple audio signals and to perform voice recognition regarding an audio signal acquired from the determined audio signals on the basis of the intensity of the determined audio signals.

公开(公告)号：US20220190621A1

公开(公告)日：2022-06-16

申请号：US17553233

申请日：2021-12-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Beomwoo GU ,  Jaehyun PARK ,  Kangho BYUN ,  Jaesun SHIN ,  Chongmin LEE

IPC: H02J7/00 ,  H02J50/12 ,  H02J7/02

Abstract: Provided is an electronic device including: a battery, a resonant circuit including a coil and a capacitor configured to wirelessly receive power, a rectifying circuit configured to rectify an alternating current power provided from the resonant circuit to a direct current power, a DC/DC converter configured to convert the direct current power provided from the rectifying circuit and to output the converted direct current power, a charging circuit configured to charge the battery using the converted direct current power provided form the DC/DC converter, a controller, and a communication circuit, wherein the controller is configured to: control the charging circuit to set a magnitude of a reference current of the charging circuit to a first value, the first value being less than a maximum value of an output current of the charging circuit, control the charging circuit to set the magnitude of the reference current to a second value greater than the first value, measure a magnitude of an output current of the charging circuit after setting the magnitude of the reference current to the second value, control, based on a difference between the measured magnitude and the second value being less than or equal to a specified set value, the charging circuit to set the magnitude of the reference current to a third value greater than the second value, and control, based on the difference between the measured magnitude and the second value exceeding the specified set value, the charging circuit to set the magnitude of the reference current to the first value to receive wireless power.

公开(公告)号：US20210149428A1

公开(公告)日：2021-05-20

申请号：US17022540

申请日：2020-09-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaeseok PARK ,  Sungku YEO ,  Youngho RYU ,  Jaesun SHIN ,  Jeongman LEE ,  Chongmin LEE ,  Hyoseok HAN

IPC: G05F1/625

Abstract: An electronic device according to an embodiment may include: a plurality of loads, a processor, and a power management circuit configured to provide the plurality of loads with a power, wherein the power management circuit may include a plurality of regulators configured to adjust a voltage of a power received from a power source and output a voltage-adjusted power, a switching circuit configured to connect at least one of the plurality of regulators to at least one of the plurality of loads, a plurality of power sensors each power sensor being configured to measure a magnitude of a power input to each of the plurality of loads, and a controller. The controller may be configured to obtain information related to an operation of each of the plurality of loads from the processor, obtain the magnitude of the power input to each of the plurality of loads from each of the plurality of power sensors, and identify a load which operates abnormally among the plurality of loads based on the magnitude of the power input to each of the plurality of loads and the information related to the operation of each of the plurality of loads.

公开(公告)号：US20240022120A1

公开(公告)日：2024-01-18

申请号：US18356547

申请日：2023-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seokyoung KANG ,  Kawon CHEON ,  Jaesun SHIN ,  Jongwoo JUNG

IPC: H02J50/80 ,  H02J7/00

CPC classification number: H02J50/80 ,  H02J7/00041 ,  H02J7/0013 ,  H02J7/0048

Abstract: A method of providing a wireless charging guide and/or an electronic device for performing the same are provided. The electronic device includes a display and at least one processor configured to determine whether the electronic device is in a charging area of a wireless charger, based on a determination that the electronic device is in the charging area, identify at least one external electronic device that is currently connected to the electronic device and/or has a record of being previously connected to the electronic device, acquire battery charge state information of the identified at least one external electronic device, and control the display to output a charging guide interface for the identified at least one external electronic device, based on a charge available state of the wireless charger and the acquired battery charge state information.

公开(公告)号：US20230040473A1

公开(公告)日：2023-02-09

申请号：US17970216

申请日：2022-10-20

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Beomwoo GU ,  Jaeseok PARK ,  Jaehyun PARK ,  Jaesun SHIN ,  Jihyun YANG ,  Jeongman LEE ,  Seogyong JEONG ,  Hyoseok HAN

IPC: H02J7/00 ,  H02J50/12 ,  H02J7/34 ,  H02J50/80

Abstract: An electronic device may include: a resonance circuit which comprises a battery, a coil and a capacitor, and receives power wirelessly; a rectifier which rectifies AC power, provided from the resonance circuit, to DC power; a DC/DC converter which converts and outputs the DC power provided from the rectifier; a charger which charges the battery by using the converted power provided from the DC/DC converter; a first OVP circuit which selectively connects the coil to the capacitor; a second OVP circuit which is connected in parallel to the first OVP circuit; a detection circuit which detects a rectified voltage; a control circuit; and a communication circuit, wherein the control circuit, on the basis that the detected rectified voltage is equal to or greater than a first threshold voltage, controls the first OVP circuit so as to be in an off state so that the coil is not connected to the capacitor, and on the basis that the detected rectified voltage is less than a second threshold voltage, controls the first OVP circuit so that the first OVP circuit is switched from the off state to an on state so that the coil is connected to the capacitor, wherein the second threshold voltage may be smaller than the first threshold voltage.

公开(公告)号：US20230327711A1

公开(公告)日：2023-10-12

申请号：US18335015

申请日：2023-06-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chongmin LEE ,  Sungku YEO ,  Kangho BYUN ,  Jaesun SHIN ,  Jeongman LEE ,  Hyoseok HAN

IPC: H04B5/00 ,  H02J50/12

CPC classification number: H04B5/0037 ,  H04B5/0081 ,  H02J50/12

Abstract: An electronic device may include: a resonance circuit including a battery, a coil, and a capacitor, and configured to receive power wirelessly; a rectifying circuit including multiple transistors, and configured to rectify alternating current power provided from the resonance circuit into direct current power; and a control circuit, wherein the control circuit is configured to: identify a difference between the phase of voltage and the phase of current of the alternating current power provided from the resonance circuit during wireless reception of power from an external electronic device; and perform impedance matching by controlling the bias voltage of at least one of the multiple transistors on the basis that the difference between the phase of voltage and the phase of current satisfies a designated condition.

公开(公告)号：US20230155416A1

公开(公告)日：2023-05-18

申请号：US17987590

申请日：2022-11-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaehyun PARK ,  Beomwoo GU ,  Jaeseok PARK ,  Kangho BYUN ,  Jaesun SHIN ,  Sungku YEO ,  Youngho RYU

IPC: H02J50/00 ,  H02J50/12 ,  H02J50/40 ,  H03H7/38

CPC classification number: H02J50/005 ,  H02J50/12 ,  H02J50/402 ,  H03H7/38

Abstract: The disclosure provides a variable wireless power transmitter including a plurality of resonators and a method of controlling the variable wireless power transmitter. A wireless power transmitter of the disclosure may include: a housing; a power amplifier disposed inside the housing; a first resonator including at least one coil and fixed to a first portion of the housing; a second resonator including at least one coil, rotatably disposed at a second portion of the housing, and configured to form a variable angle with the first resonator; a sensor configured to sense a shape change based on rotation of the second resonator; a controller configured to: identify a shape change of the first resonator and the second resonator based on a signal sensed by the sensor, identify whether impedance is matched for the first resonator or the second resonator based on the identification of the shape change, and generate a control signal for impedance matching for the first resonator or the second resonator based on identifying that the impedance is not matched; and a matching circuit including at least one coil and at least one capacitor, electrically coupled between the power amplifier and the first resonator, and configured to perform impedance matching based on the control signal received from the controller.