Samsung Electronics Co., Ltd.

Hyuk-Choon Kwon

Soo-Yeon Jung

Hee-Won Jung

Kang-Ho Byun

Kyung-Woo Lee

Hae-Young Jun

Ho-Dong Kim

Nam-Yun Kim

Dong-seek Park

Ho-dong Kim

Seung-Hoon Park

Eun-Tae Won

Jae-Seung Son

Tae-Han Bae

Dong-Seek Park

Ho-Seong Lee

Jae-Sung Han

Do-Young Kim

Se-Ho Park

Huai-Rong Shao

Sung-Bum Park

Sung-bum Park

Joon-Il Kim

Kyung-woo Lee

Chi-Hong Cho

A method and apparatus for controlling a wireless power transmitter configured to transmit power to a wireless power receiver is provided. The method includes receiving a first signal from the wireless power receiver, wherein the first signal comprises load detection indication bits, detecting a change in load of the wireless power transmitter caused by placement of the wireless power receiver in a charging area of the wireless power transmitter, based on the load detection indication bits, and determining whether to transmit a second signal to the wireless power receiver based on detecting the change in load of the wireless power transmitter.

Wireless power transmitter for excluding cross-connected wireless power receiver and method for controlling the same

An apparatus and method are provided for permitting a wireless power receiver to be charged by a wireless power transmitter. The method includes generating a Power Receiving Unit (PRU) control signal including permission information indicating charging permission for the wireless power receiver; and transmitting the PRU control signal to the wireless power receiver.

Wireless power transmitters and receivers, and method for permitting a wireless power receiver by a wireless power transmitter

A method for controlling a wireless power transmitter is provided herein. The method includes outputting a first power for detecting a change in a load impedance of the wireless power transmitter; detecting the change in the load impedance of the wireless power transmitter; outputting a second power for communicating with a wireless power receiver; receiving, from the wireless power receiver, a first signal within a preset time period after detecting the change in the load impedance; determining whether a reception intensity of the first signal is less than or equal to a threshold; and based on determining that the reception intensity of the first signal is less than or equal to the threshold, excluding the wireless power receiver from a wireless power network of the wireless power transmitter, the wireless power receiver being outside of the charging range of the wireless power transmitter.

Wireless power transmitter, wireless power receiver, and control methods thereof

Disclosed is a control method for transmitting charging power to a wireless power receiver in a wireless power transmitter, including receiving an advertisement signal from a wireless power receiver, the advertisement signal including a handle value and a preset universally unique identifier (UUID), identifying a value assigned to a characteristic by adding a predetermined number to the handle value, transmitting a connection request signal to the wireless power receiver for establishing a communication connection with the wireless power receiver, in response to the advertisement signal, receiving, from the wireless power receiver, static information of the wireless power receiver over the communication connection, and transmitting, based on the static information, a control signal including permission information to the wireless power receiver.

Wireless power transmitter, wireless power receiver and control method thereof

Methods and apparatuses are provided for controlling a wireless power transmitter. First power for charging a first wireless power receiver is transmitted. Demand power information of a second wireless power receiver is received. The demand power information includes a maximum power for the second wireless power receiver. A controller identifies whether the wireless power transmitter is capable of providing the maximum power. A power adjustment command is transmitted to the second wireless power receiver, if the wireless power transmitter is not capable of providing the maximum power. The power adjustment command requests to reduce a magnitude of power to be received by the second wireless power receiver to a level within a range that the wireless power transmitter is capable of supporting. Second power for charging the first wireless power receiver and the second wireless power receiver is transmitted based on at least the reduced magnitude of power.

Method for distributing wireless charge power for multiple wireless power receivers

A control method of a wireless power receiver is provided. The control method includes wirelessly receiving a first power from a wireless power transmitter; based on the received first power, loading a first communication stack from a memory stored in a communication module of the wireless power receiver; establishing a communication connection with the wireless power transmitter based on the first communication stack; wirelessly receiving a second power from the wireless power transmitter; based on residual capacity of a battery of the wireless power receiver exceeding a minimum power threshold according to the received second power, determining to re-initialize the communication connection with the wireless power transmitter; transmitting a message including a time period required to complete at least one procedure for re-initializing the communication connection with the wireless power transmitter; and wirelessly receiving the second power from the wireless power transmitter while re-initializing the communication connection with the wireless power transmitter.

Wireless power transmitting unit, wireless power receiving unit, and control methods thereof

A wireless power transmitter configured to transmit power to a wireless power receiver and a method for controlling the wireless power transmitted are provided. The method includes applying a detection power for detecting a change in a load impedance of the wireless power transmitter; detecting the change in the load impedance of the wireless power transmitter; receiving, from a wireless power receiver, a first signal within a preset time period after detecting the change, wherein the first signal includes a field for a load impedance detection; determining whether the detected change corresponds to the field of the first signal; determining whether a reception intensity of the first signal is greater than a threshold; and based on a determination that the detected change corresponds to the field of the first signal and the reception intensity of the first signal is greater than the threshold, transmitting, to the wireless power receiver, a second signal to form a communication connection with the wireless power receiver.

Disclosed is a control method for transmitting charging power to a wireless power receiver in a wireless power transmitter, wherein a connection request signal is transmitted to the wireless power receiver for forming a communication connection between the wireless power transmitter and the wireless power receiver, based on information about a characteristic of an advertisement signal transmitted to the wireless power transmitter, the advertisement signal including a handle value for a preset universally unique identifier, the wireless power receiver is registered to a wireless power network corresponding to the wireless power transmitter through the communication connection, and wireless charging power is transmitted to the wireless power receiver after registering the wireless power receiver.

One embodiment of the present invention is capable of providing a method for efficiently transmitting power for multiple wireless power receivers by distributing the power of the wireless power receivers as power which matches the respective wireless power receivers in accordance with demand power information from the multiple wireless power receivers.

A control method of a wireless power receiving unit for receiving charging power from a wireless power transmitting unit to perform wireless charging is provided. The control method includes receiving the charging power from the wireless power transmitting unit; detecting a change in a wireless charging environment; generating a message notifying of the change in the wireless charging environment; and transmitting the message notifying of the change in the wireless charging environment to the wireless power transmitting unit.

Control method of wireless power receiver that includes transmitting advertisement signal to search for wireless power transmitter; receiving, from wireless power transmitter, connection request signal to form connection between wireless power receiver and wireless power transmitter, wherein connection request signal corresponds to advertisement signal; receiving charging power from wireless power transmitter; detecting error state in wireless power receiver while receiving charging power; generating alert signal indicating error state; and transmitting alert signal to wireless power transmitter, wherein error state includes at least one of over-voltage state in which rectifier voltage of wireless power receiver is greater than reference voltage, over-current state in which rectifier current of the wireless power receiver is greater than reference current, over-temperature state in which temperature of wireless power receiver is greater than reference temperature, and system error of wireless power receiver, and wherein a switch to protect wireless power receiver is turned off if the error state is over-voltage state.

Growing community of inventors

Seoul, South Korea

Hyuk-Choon Kwon