Lg Electronics Inc.

Solid, Inc.

Hyunbeom Lee

Yongcheol Park

Jaesung Lee

Jihyun Lee

Jeongkyo Seo

Seonghun Lee

Byungsang Jung

Jinmoo Park

Hyunchae Kim

Bongsik Kwak

Jun Youb Lee

Kihyun Jung

Yong-Cheol Park

A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver, receiving at least one of identification information and setting information from the wireless power receiver, receiving a control error packet from the wireless power receiver, and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.

Wireless power transfer method, apparatus and system for low and medium power

A wireless power transmitter which is capable of charging a plurality of wireless power receivers is discussed. The wireless power transmitter includes a plurality of coil cells, a main half-bridge inverter to which a main pulse signal is applied, a plurality of sub half-bridge inverters to which a first sub pulse signal or a second sub pulse signal is applied, at least one current sensor configured to monitor a current, and a communications and control unit configured to control the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and communicate with the wireless power receivers.

Wireless power transmitter and wireless power transmission method

A wireless power receiver capable of receiving power, the wireless power receiver includes a wireless conversion unit configured to transmit first information to a wireless power transmitter based on a first communication protocol and to receive from the wireless power transmitter based on the first communication protocol, the first information including information about whether the wireless power receiver supports a second communication protocol different from the first communication protocol, the second information including information about whether the wireless power transmitter supports the second communication protocol; and a control unit configured to communicate over at least one of the first communication protocol and the second communication protocol with the wireless power transmitter, further the control unit is configured to establish the second communication protocol between the wireless power transmitter and the wireless power receiver based on the first information and the second information.

Wireless power transfer method, apparatus and system

A communication method of a wireless power receiver performing communication with a wireless power transmitter through a plurality of slots, the method includes receiving allocation of any one of the plurality of slots from the wireless power transmitter, receiving provision of at least one of the plurality of slots from the wireless power transmitter as locked slots subsequent to the allocation, and transmitting information associated with a configuration phase and information associated with a negotiation phase to the wireless power transmitter within the locked slots.

The present disclosure relates to a wireless power transmitter for performing communication with a wireless power receiver using a plurality of slots, and the wireless power transmitter may include a power conversion unit configured to transmit a wireless power signal to the wireless power receiver, and a power transmission control unit configured to perform communication with the wireless power receiver using the wireless power signal, wherein the power transmission control unit performs steps including receiving control information from the wireless power receiver within any one of the plurality of slots, transmitting an ACK signal to the wireless power receiver in response to the control information, and allocating the any one slot to the wireless power receiver to perform communication with the wireless power receiver using the any one slot when the ACK signal is received.

The present disclosure relates to a wireless power reception method, a wireless power reception apparatus, and a wireless charging system in a wireless power transmission and reception field, and the wireless power reception apparatus may include a power receiving unit configured to change a magnetic flux to a current to receive power in a wireless manner, and a power controller connected to the power receiving unit to change a resonant frequency to control power received from the power receiving unit, wherein the power controller includes a first capacitor, a second capacitor connected to the first capacitor in parallel, a first switch connected to the second capacitor in series to flow a current in a first direction, a second switch configured to flow a current in a second direction opposite to the first direction, and a switch controller configured to control the first and the second switch.

According to an aspect of the inventive concept, there is provided an interference cancellation repeater for repeating a long term evolution (LTE) signal between a terminal and a base station, the interference cancellation repeater includes: an interference canceller configured to generate a restored LTE signal by canceling a feedback signal included in an input LTE signal; a sync signal detector configured to detect a first sync level which is a level with respect to a sync signal of the input LTE signal and a second sync level which is a level with respect to a sync signal of the restored LTE signal; and a gain controller configured to control a signal amplifier according to isolation calculated based on a difference between the first sync level and the second sync level.

Interference cancellation repeater

The present disclosure relates to a wireless power transmission and reception method, a wireless power transmission and reception apparatus, and a wireless charging system in a wireless power transmission and reception field, and the method may include sensing whether or not there exists a wireless power receiver within a range capable of transmitting power in a wireless manner, sending a detection signal to the wireless power receiver, allowing the wireless power receiver to receive at least one of an identification packet and a setting packet transmitted in a first mode, determining whether or not to perform communication in either one of the first mode and a second mode different from the first mode based on the setting packet, and transmitting power to the wireless power receiver while performing communication in the determined either one mode, wherein the setting packet comprises an operation mode indicating a communication execution mode of the wireless power receiver.

Wireless power transfer and receive method, apparatus and system

A wireless power transmitter is disclosed. The wireless power transmitter, which is capable of charging a plurality of wireless power receivers, includes: a plurality of coil cells; a main half-bridge inverter to which a main pulse signal is applied; a plurality of sub half-bridge inverters to which a first sub pulse signal or second sub pulse signal is applied; a current sensor that monitors the current through the coil cells; and a communications and control unit that controls the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and that communicates with the wireless power receivers, wherein the sub half-bridge inverters may be respectively connected to the coil cells.

The present disclosure relates to a wireless power transmission method, a wireless power transmission apparatus, and a wireless charging system in a wireless power transmission field, and there is provided a communication method of a wireless power transmitter capable of the transmission of power in a wireless manner, and the communication method may include receiving communication information indicating whether or not a second communication mode is available using a first communication mode from a wireless power receiver, determining whether or not communication in a second communication mode is available using the communication information, notifying either one of the first communication mode and second communication mode to the wireless power receiver based on the determination result, and performing communication with the wireless power receiver using a communication mode notified to the wireless power receiver.

The present disclosure relates to a wireless power transfer method, a wireless power transfer apparatus, and a wireless charging system in a wireless power transfer field, and there is provided a communication method of a wireless power transmitter performing communication with at least one wireless power receiver through a plurality of slots, and the method may include allocating any one of the plurality of slots to any one of the at least one wireless power receiver, providing at least one of the plurality of slots to the any one wireless power receiver as locked slots subsequent to the allocation, and receiving information associated with a configuration phase and information associated with a negotiation phase from the any one wireless power receiver within the locked slots.

A wireless power transmitter according to one exemplary embodiment of the present disclosure includes a body having a transmitting coil unit embedded therein, and having one surface with a portable electronic device located thereon, the portable electronic device receiving power from the transmitting coil unit in a wireless manner, and a driving unit that is configured to rotate the transmitting coil unit centering on a shaft penetrating through the transmitting coil unit, such that the transmitting coil unit is moved close to a receiving coil unit of the portable electronic device.

Wireless power transmitting apparatus

This specification provides a method for deciding a communication protocol between a wireless power transmitter and a wireless power receiver. To this end, a method for deciding a communication protocol by the wireless power receiver for data transmission or reception with the wireless power transmitter includes transmitting first communication protocol information indicating communication protocols supportable by the wireless power receiver itself to the wireless power transmitter, and deciding a communication protocol for the data transmission or data reception based on second communication protocol information, which indicates communication protocols selected based on the first communication protocol information, when the second communication protocol information is received from the wireless power transmitter.

Growing community of inventors

Seoul, South Korea

Hyunbeom Lee