Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Kyungmin Lee

Kihyun Kim

Mincheol Ha

Dongzo Kim

Yunjeong Noh

Jihye Kim

Hyungkoo Chung

Kwangyoun Kim

Chanwoo Kim

Kwangseob Kim

Sangwook Lee

Sungbum Park

Yongsang Yun

Sungsoo Kim

Jaewon Lee

Youngho Ryu

Changwoo Han

Changhak O

Jaehong Jung

Jinsoo Choi

Jiwon Kim

Seunghyun Oh

Keumsu Song

Jongchul Hong

Sungchan Kim

Hyunseok Ryu

Jong-Hwan Kim

Daehyun Kim

Min Hee Jang

Jiyeon Kim

Sungyeol Kim

Sang-Hyo Kim

Seungbo Shim

Wonjun Hwang

Wooram Lee

Namhoon Kim

Woojin Jung

Youngdo Kim

Jongyoub Ryu

Gun-Woo Moon

Chiyoun Park

Youngho Han

Taehyeon Yu

Keyic Son

Bohwan Choi

Sichen Jin

Sangdon Jung

Dhananjaya N Gowda

Jinsu Choi

Sangyoon Kim

Sangha Kim

Kiyoung Kim

Jisun Park

Cheonyong Lim

Yongchan Lee

Donguk Jung

Sangmoo Hwangbo

Jeongseob Kim

Keunseok Cho

Hyeontaek Lim

Yeaseul Song

Aahwan Kudumula

Sungyong Lim

Hyunseok Shin

Sangki Nam

Jaeyoung Roh

Jiwon Hyung

Jungsu Park

Namkyun Kim

Donghan Jang

Kyungwoo Lim

Jebin Lee

Chansoo Kang

Jaehyuck Shin

Cheolyoon Chung

Abhinav Garg

Dongmin Kim

Hyunseok Park

Byungki Han

Gijae Lee

Choongsun Shim

Eun Chong Baek

Hyunseok Seo

Sangjae Jung

Seungchul Son

Hyongrae Cho

Young-Dal Lee

Jaeil Baek

A wireless power transmission device includes power transmission coils for transmitting power to a wireless power reception device; inverters for applying alternating current power to the coils; a communication module using a frequency different from that of the power transmitted from the coils; and a processor. The processor controls the inverters such that first power is sequentially applied to the coils respectively, receives a communication signal from the reception device through the communication module while the first power is being sequentially applied, identifies a first coil corresponding to a position of the reception device based on of a reception time point of the communication signal and time points at which the first power starts to be applied to the coils, and controls a first inverter corresponding to the first coil such that second power for charging the reception device is applied to the first coil.

Electronic device for transmitting wireless power having a plurality of power transmission coils and operating method therefor to identify position of a wireless power reception device

An electronic device includes a plurality of coils, power conversion circuits, demodulation switches, and a processor. The power conversion circuits convert DC power into AC power, and output the AC power to the plurality of coils, respectively. The demodulation switches selectively connect the plurality of coils to ground. The processor selects at least one coil from among the plurality of coils, and controls an on/off state of the demodulation switches to connect or disconnect at least one remaining coil except for the selected at least one coil among the plurality of coils to the ground. The processor controls the power conversion circuits to output the AC power to the selected at least one coil and demodulates a signal of the selected at least one coil to identify information from an external electronic device disposed adjacent to a selected at least one coil based on the demodulation.

Electronic device for wirelessly transmitting power and operation method thereof

Disclosed is an electronic device including a plurality of sensing coils for sensing an external device; a power transmitting coil for transmitting power to the external device; and a processor configured to: sequentially apply, to the power transmitting coil, powers having magnitudes respectively set to correspond to the plurality of sensing coils, and during a period in which power corresponding to each sensing coil of the plurality of sensing coils among the powers is applied, identify induction voltages respectively induced in the plurality of sensing coils, and sense the external device located on a wireless power transmitting device, on the basis of the identified induction voltages.

Electronic device for transmitting wireless power and operating method therefor

An electronic device is provided. The electronic device includes a wireless transmission circuit for transmitting power to a power reception device, and a first processor. When entering a power reduction mode, with respect to a first voltage and a first current being output from the wireless transmission circuit, the first processor includes, in case that the power reception device is in an align state, lower a voltage of the wireless transmission circuit to a second voltage lower than the first voltage and lower a current flowing in the electronic device to a second current lower than the first current, and, in case that the power reception device is in a misalign state, lower a voltage of the electronic device to a third voltage lower than the second voltage and lower a current flowing in the wireless communication circuit to a third current lower than the second current.

Electronic device and method for controlling heat in electronic device

An example wireless power transmitter may include a transmission coil, a converter configured to output a driving voltage, an inverter configured to output AC power to the transmission coil using the driving voltage, and a controller. The controller may be configured to identify a first voltage at one point within the wireless power transmitter while power is wirelessly transmitted through the transmission coil. The controller may be configured to perform at least one operation for providing a first packet for reduction in modulation depth of a wireless power receiver to the wireless power receiver based on a peak-to-peak value identified to be larger than a first reference value according to the first voltage.

Wireless power transmitting device, wireless power receiving device, and method of operating the same

According to various embodiments, there may be provided an electronic device comprising a coil, an inverter configured to provide power to the coil, a power providing circuit, a communication circuit, and a control circuit, wherein the control circuit is configured to control the power providing circuit to apply a first voltage to an input terminal of the inverter, the inverter outputting a first magnitude of power based on the application of the first voltage, control the power providing circuit to apply a second voltage lower than the first voltage to the input terminal of the inverter, based on the application of the first voltage being maintained for a specific time, identify, through the communication circuit, a first control error packet from the wireless power receiving device, while applying the second voltage, and identify a first value included in the first control error packet.

Electronic device wirelessly transmitting power, wireless power reception device wirelessly receiving power, and method for operating the same

An electronic device includes: coils; power conversion circuits configured to receive direct current (DC) power, convert the DC power into alternating current (AC) power, and output the AC power to the coils; and a processor. The processor is configured to: apply to the coils a ping signal of which a ping power section is repeated periodically and which has a plurality of ping power levels increasing in phases; confirm an SSP signal responding to the ping signal; and perform wireless power transmission by the coils on the basis of a ping power level in which the SSP signal is confirmed from among the plurality of ping power levels.

Electronic device and method for confirming power reception device by electronic device

According to various embodiments, a wireless power transmission device may comprise: a coil circuit configured to generate a power signal for power transmission to an electronic device; an inverter configured to convert direct current power to alternating current power and to provide the alternating current power to the coil circuit; a coil-type detection unit comprising a coil disposed to be adjacent to the coil circuit and configured to detect a signal corresponding to the power signal; and a control circuit configured to adjust, based on the detected signal, a switching frequency of the inverter to change the alternating current power output from the inverter.

Method for performing wireless charging, wireless power transmission device, and storage medium

Disclosed is a method for controlling an electronic device electrically couplable to an external electronic device through a connector and capable of transmitting/receiving wireless power, the method including: an operation of identifying electrical connection to the external electronic device; an operation of receiving power from the external electronic device through a short-range communication module; an operation of controlling a mode switch module based on the received power and transmitting a signal regarding a power transmission mode to the external electronic device through the connector; an operation of receiving direct-current power from the external electronic device through the connector after transmitting the signal regarding the power transmission mode; and an operation of generating an electromagnetic field for wireless power transmission through the wireless power transmission/reception module, based on the received direct-current power.

Electronic device and method for controlling operation of electronic device

According to embodiments, a wireless power transmitter may include: a communication module comprising communication circuitry; a power transmission circuit configured to transmit wireless power; and a processor. The processor may be configured to: establish a communication connection with a wireless power receiver using the communication module, control the communication module to transmit information about a first period to the wireless power receiver via the communication connection, control the power transmission circuit to transmit first power of a first frequency and a first magnitude to an outside, control the communication module to receive information about a second frequency of second power received at the wireless power receiver from the wireless power receiver via the communication connection, control the communication module to release the communication connection, based on the first frequency being different from the second frequency, and control the power transmission circuit to transmit third power of a magnitude different from the first magnitude of the first power to the outside during the first period, based on the first frequency corresponding to or substantially identical to the second frequency.

Wireless power transmitter, wireless power receiver, and method of operating the same

A first electronic device for wirelessly transmitting power may include a power transmission circuit, memory, a pulse generator, a foreign object detection circuit configured to detect a foreign object located in a path in which power is wirelessly transmitted through the power transmission circuit, and a control circuit. The control circuit may be configured to wirelessly transmit power to a second electronic device, based on an alternating current (AC) input voltage applied to the power transmission circuit, generate a trigger signal synchronized with a first time corresponding to a specified voltage of the input voltage through the pulse generator, store an output value of the foreign object detection circuit in the memory based on the trigger signal, the output value being identified at the first time, continuously obtain the output value stored in the memory from the memory during a specified time until before the trigger signal of a next period is received at the memory from the pulse generator, and detect the foreign object based on the output value obtained during the specified time.

Electronic device for wirelessly transmitting power and method of operating the same

An electronic device is provided. The electronic device includes a processor operatively connected to a connector, a power supply circuit, a discharge circuit, a first switch, and a second switch, and configured to detect a connection of an external electronic device through the connector in a state in which the discharge circuit is activated, perform first discharge of discharging a current of the connected external electronic device using the discharge circuit for a designated time based on the connection of the external electronic device, control the first switch to cut off the electrical connection between the discharge circuit and the ground after performing the first discharge, control the second switch to electrically connect the connector and power supply circuit to supply designated power to the external electronic device through the connector, and perform communication with the external electronic device based on a communication connection with the external electronic device.

Electronic device and method of controlling discharge of external electronic device using the same

Various embodiments relating to an electronic device are disclosed, and according to an embodiment, the electronic device may comprise: a plurality of coils; a first power generation circuit electrically connected to at least one of the plurality of coils; a second power generation circuit electrically connected to at least one of the plurality of coils; and a control circuit, wherein when the approach of a second external electronic device is detected while first power is provided to a first external electronic device by using a first frequency via the first power generation circuit, the control circuit allows the frequency of the second power generation circuit to be configured to a second frequency different from a first frequency in order to provide second power to the second external electronic device. Other embodiments may be possible.

Electronic device and multi-wireless transmission power control method based on states of plurality of external electronic devices

A diagnostic device for diagnosing distribution of a radical in a plasma processing chamber, the diagnostic device, may include a spectrometer receiving an optical signal through at least one optical channel connected to the plasma processing chamber, and performing spectral analysis on the optical signal in response to a synchronization signal corresponding to each of states of a multi-level pulse applied to the plasma processing chamber and a synchronizer generating the synchronization signal corresponding to each of the states of the multi-level pulse.

Device for radical diagnostic in plasma processing chamber, radical diagnostic system having the same, and operating method thereof

Disclosed is a method of controlling an electronic apparatus. The method of controlling an electronic apparatus includes: displaying a screen including an input area configured to receive a text, receiving a speech and obtaining a text corresponding to the speech, performing a service operation corresponding to the input area by inputting the obtained text to the input area, and based on a result of performing the service operation, obtaining a plurality of similar texts including a similar pronunciation with the obtained text, and repeatedly performing the service operation by sequentially inputting the plurality of obtained similar texts to the input area.

Electronic apparatus and controlling method thereof

Growing community of inventors

Suwon-si, South Korea

Kyungmin Lee