Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Korea Advanced Institute of Science and Technology

Immunomax Co., Ltd.

Hynix Semiconductor Inc.

Se-Ho Park

Kang-Ho Byun

Kyung-Woo Lee

Young-Min Lee

Sung-Ku Yeo

Yu-Su Kim

Ki-Hyun Kim

Woo-Ram Lee

Sung-Kweon Park

Jin-Hyoung Park

Joon-Il Kim

Kil-Soo Ko

Sung-Bum Park

Seung-Woo Han

Hee-Won Jung

Hong-Kweun Kim

Hae-Young Jun

Cheol-Hee Hwang

Bong-Chull Kim

Gyu-Hyeong Cho

Jeong-Seok Lee

Yu-su Kim

Eun-Tae Won

Noh-Gyoung Kang

Se-Ki Kim

Ki-ho Kim

Sun-tae Jung

Hyoun-Soo Kim

Hyuk-Choon Kwon

Tae-Hun Kim

Jun-Ho Koh

Shi-yun Cho

Youn-ho Choi

Joon-Ho Park

Dong-Zo Kim

Ji-hyun Jung

Jea-Woan Lee

Kyung-woo Lee

Dong-Yung Kim

Jun-han Choi

Seok-Myong Kang

Hyun-Jun Choi

Min-Cheol Ha

Min-Ho Kang

Jong Heo

Han-Seok Park

Joon-II Kim

Eunbi Yi

Saeng-Hee Lee

Song-cheol Hong

Ho-Seong Lee

Ju-Hyang Lee

Seung-Hee Park

Soo-Mi Eo

Hyung-Koo Chung

Kyung-Won Kang

Kyu-Sub Kwak

Dong-Chin Lee

Su-Ho Song

Kyoung-Won Kim

Se-Hyun Cho

Yong-Won Lee

Sea-Young Lee

Chang-Hak O

Kwang-Seob Kim

In-Ho Jung

Na-Rae Won

Jae-Hyuck Lee

Yong-Beom Shin

Young-Kwang Cho

Chan Hong

Yi-Seop Ahn

Juno Park

Yun-Jeong Noh

Nam-Su Yuk

Jong-Chan Kim

Cha-deok Dong

Yu-Mi Ha

Duk-Ju Ahn

Gwang-Hyeon Jeong

Won-Ki Lee

Sang-Moo Hwangbo

Provided is a portable communication device which transmits manufacturer information and capability information to a wireless power transmitter, the manufacturer information being indicative of a manufacturer of the portable communication device and the capability information being indicative of a charging function of the portable communication device, receives a response from the wireless power transmitter including one or more characteristics with respect to the charging function allowed for the portable communication device, the one or more characteristics being determined by the wireless power transmitter based at least in part on the manufacturer information and the capability information received from the portable communication device, transmits a request for updating at least one of the one or more characteristics with respect to the charging function, and performs the charging function to charge the battery using power received from the wireless power transmitter and determined based on the at least one updated characteristic.

Wireless power transmitter, wireless power receiver, and operating method thereof

Methods and apparatuses are provided for controlling power transmission in a power transmitter. Voltage information including a minimum voltage, a maximum voltage, and a first voltage, is received from each of a plurality of power receivers. Power is transmitted to the plurality of power receivers based on the voltage information. A respective report about a power reception condition is received from each of the plurality of power receivers while transmitting the power. Each respective report includes a measured voltage at a corresponding power receiver of the plurality of power receivers. A power receiver is selected from among the plurality of power receivers based on the received reports. An amount of the power is adjusted by reducing a difference between a first voltage of the selected power receiver and a measured voltage of the selected power receiver.

Method and power transmitter for controlling power transmission

Provided is a method of a wireless power transmitter, including transmitting a detection power, detecting a variation of a load impedance, the variation being greater than a predetermined value, receiving a first signal including an identifier and a load characteristic of the wireless power receiver, the load characteristic including load information indicating the variation of the load impedance, transmitting a first response to form a communication connection with a wireless power receiver in response to the first signal, receiving a second signal including required power information of the wireless power receiver, determining whether power is available to the wireless power receiver based on the required power information, and transmitting a second response including permission information indicating a standby mode or a charging mode based on a result of the determining.

Wireless power system comprising power transmitter and power receiver and method for receiving and transmitting power of the apparatuses

A method and power transmitter for efficiently controlling power transmission to one or more power receivers in a wireless multi-power transmission system are provided. The method includes performing, when a predetermined measurement cycle arrives, a load measurement; comparing a current load measurement value with a previous load measurement value; determining whether the current load measurement value is increased over the previous load measurement value by at least as much as a first predetermined threshold; gradually increasing, when the load measurement value is increased over the previous load measurement value by at least as much as the first threshold, a transmission power value until a request for a subscription to a wireless multi-power transmission network from a power reception target within a predetermined time limit; and stopping, when the request for the subscription is not received before the time limit is exceeded, power transmission to the power reception target.

Power transmitting method and power transmitter for communication with power receiver

An apparatus and a method for are provided for a wireless power receiver. The method includes receiving power from a wireless power transmitter; converting the power in an alternating current (AC) form into a direct current (DC) form and providing the converted power to a battery of the electronic device; measuring a temperature of a point in the wireless power receiver during reception of the wireless power; maintaining an amount of the converted power at a first level if the temperature is lower than a first temperature; decreasing the amount of the converted power to a second level which is lower than the first level if the amount of the converted power is at the first level and the temperature is higher than or equal to the first temperature; stopping providing the converted power to the battery if the temperature is higher than a second temperature; and transmitting, to the wireless power transmitter, a signal including status information of the wireless power receiver device and control information to control the wireless power transmitter.

Method and apparatus for protecting wireless power receiver from excessive charging temperature

A method and electronic device for performing wireless charging are provided. The electronic device includes a housing, a conductive coil, a power transmission circuit electrically connected to the conductive coil, and configured to wirelessly transmit power to an outside of the housing through the conductive coil, a voltage source electrically connected to the power transmission circuit, and a control circuit electrically connected between the power transmission circuit and the voltage source. The control circuit is configured to change power radiated through the conductive coil, monitor a frequency of a signal and/or electromagnetic waves radiated through the conductive coil, and adjust a level of a voltage from the voltage source based on at least a part of a monitored result of the frequency.

Method and electronic device for performing wireless charging

A method and an apparatus for wireless power transmission by a power transmitting apparatus is provided. The method includes transmitting detection power towards a power receiving apparatus, detecting an impedance change made by the power receiving apparatus, transmitting driving power for communication with the power receiving apparatus towards the power receiving apparatus, receiving a search signal from the power receiving apparatus within a preset time, and determining whether the impedance change is within a first acceptable range based on the received search signal.

Power transmitting and receiving apparatus and method for performing a wireless multi-power transmission

A portable terminal is provided. The portable terminal includes a shielding member attached to an inner surface of an external part, a shielding wall formed on the shielding member, a first coil attached to a surface of the shielding member that faces the inner surface of the external part, and a second coil attached to the surface of the shielding member, with the second coil surrounds the first coil on a same plane and the shielding wall being disposed between the first and second coil.

Electronic device including multiple coils

Portable terminal including multiple coil

Methods and apparatus for wireless charging are provided. Transmission power transmitted from a wireless power transmitter is received at a power receiver of a wireless power receiver. A battery of the wireless power receiver is charged with the received transmission power. It is determined whether the battery is fully charged. A packet from a communication unit of the wireless power receiver is transmitted to the wireless power transmitter when the battery is fully charged. An auxiliary charge of the battery is performed by receiving strength-reduced transmission power from the wireless power transmitter.

Wireless charging apparatus and method

A method for controlling an electronic device including a charging circuit is provided. The method includes receiving power wirelessly from a power transmitting device; rectifying the received power; based on a voltage of the rectified power being greater than or equal to an allowable voltage of the charging circuit, controlling to convert the rectified power through a converting circuit of the electronic device and to output the converted power to the charging circuit for charging a battery of the electronic device, wherein the allowable voltage relates to a maximum voltage or a preferable voltage to be applied to the charging circuit; and based on the voltage of the rectified power being less than the allowable voltage of the charging circuit, controlling to stop converting the rectified power and to output the rectified power to the charging circuit by connecting the rectifying circuit to the charging circuit.

Wireless power receiver and controlling method thereof

Provided is a wireless power receiver for wirelessly receiving power from a wireless power transmitter, including a resonator that wirelessly receives power from the wireless power transmitter, a communication module that performs communication with the wireless power transmitter, and a controller that transmits manufacturer information on the wireless power receiver to the wireless power transmitter through the communication module, receives an authority over whether to allow each of at least one function of the wireless power receiver through the communication module, and performs a function allowed for the wireless power receiver based on the authority.

A method and apparatus are provided for operating a wireless power transmitter. The method includes controlling the wireless power transmitter to wirelessly transmit power for charging a first power receiver, and while transmitting the power, receiving a search signal from a second power receiver, transmitting a search response signal corresponding to the search signal, and receiving, from the second power receiver, a request join signal including at least one piece of information associated with a power requirement of the second power receiver. Based on identifying that the wireless power transmitter is capable of providing the power having an amount greater than the power requirement of the second power receiver, the method further includes transmitting a charge start command to the second power receiver.

Method and apparatus for transmitting wireless power

A method and apparatus are provided for determining, by a wireless power transmitter, whether a wireless power receiver is removed from a wireless power network managed by the wireless power transmitter. The method includes transmitting a command signal to report power information of the wireless power receiver at stated periods; determining whether a report signal corresponding to the command signal is received from the wireless power receiver; and determining that the wireless power receiver is removed from the wireless power network, if the report signal is not received after transmitting the command signal a predetermined number of times at the stated periods.

Apparatus and method for transmitting wireless power

Growing community of inventors

Gyeonggi-do, South Korea

Se-Ho Park