Lg Electronics Inc.

Taeyoung Song

Jingu Choi

Jinkwon Lim

Minsoo Lee

Hyeonjae Lee

Younghwan Kwon

Yongcheol Park

Joonho Park

Jonghun Song

Jaehyu Kim

Jonghyun Baik

Jangwoong Park

Donghyun Kang

Youngjun Jo

Sungwon Jung

A wireless power reception device according to an embodiment of the present specification comprises: a power pickup circuit configured to receive wireless power from a wireless power transmission device by magnetic coupling with the wireless power transmission device at an operating frequency, and convert an AC signal generated by the wireless power into a DC signal; and a communication/control circuit for communicating with the wireless power transmission device by using in-band communication using the operation frequency and out-band communication using a frequency other than the operation frequency, wherein the communication/control circuit transmits access information of a Wi-Fi network connected to the wireless power reception device, to the wireless power transmission device by using the out-band communication.

Wireless power reception device and wireless power transmission device

Disclosed in the present specification is a wireless power reception device comprising: a power pickup unit configured to receive wireless power from a wireless power transmission device by means of magnetic coupling with the wireless power transmission device at an operational frequency and convert an alternating current signal generated by the wireless power into a direct current signal; a battery configured to receive the direct current signal from the power pickup unit; and a communication/control unit configured to receive the direct current signal from the power pickup unit, perform a handover procedure from in-band communication using the operational frequency to out-band communication using a frequency other than the operational frequency, perform a procedure for selecting a priority display device on which charging status information about the battery is to be displayed through the out-band communication with the wireless power transmission device, and generate the charging status information.

Apparatus and method for providing charging status information in wireless power transmission system

A wireless power receiver may comprise: a power pick-up circuit configured to receive power wirelessly from a wireless power transmitter including a plurality of primary coils by magnetic coupling to the wireless power transmitter at an operating frequency and to convert an alternating current signal induced by the wireless power into a direct current signal; a communication/control circuit receiving the direct current signal supplied from the power pick-up circuit and including an in-band communication module which communicates with the wireless power transmitter by using the operating frequency, and an out-band communication module which communicates with the wireless power transmitter by using any frequency except for the operating frequency; and a load configured to receive the direct current signal supplied from the power pick-up circuit, wherein the communication/control circuit transmits a message informing of the start of power allocation negotiation, to other wireless power receivers by using the out-band communication module.

Device and method for performing power allocation and out-band activation by using short-range communication in wireless power transmission system

In the present disclosure, a method comprising: receiving a first advertisement message for measuring a declination angle between devices; measuring each declination angle between a reference point set in the control device and positions of at least one device based on the first advertisement message, wherein the positions of the at least one device are respectively adjusted such that each declination angle satisfies a specific angle for receiving a voice signal, based on the measured respective declination angles; receiving each of a first voice signals based on the respective adjusted positions from the at least one device; and measuring a volume of the received first voice signal, respectively, wherein based on the measured volume, an audio signal output angle of the at least one device is adjusted such that an audio signal received by the control device is incident at right angles to the control device.

Voice signal receiving method using Bluetooth low power in wireless communication system, and apparatus therefor

The present disclosure relates to a method by which a third device transmits audio data in a short-range wireless communication system, and to an apparatus therefor. According to the present specification, the method by which a third device transmits audio data in a short-range wireless communication system comprises the steps of: transmitting, to at least one device, a first advertisement message for providing a broadcast audio data streaming service; transmitting, to the at least one device, a second advertisement message related to synchronization of an audio data output time point, wherein the second advertisement message includes force delay information for synchronizing a time point at which the audio data is output from each of the at least one device; and transmitting the audio data to the at least one device, wherein the time point at which the audio data is output from each of the at least one device is determined on the basis of the force delay information.

Method for transmitting audio data using short-range wireless communication in wireless communication system, and apparatus therefor

A method for receiving audio data using Bluetooth Low Energy technology comprises: receiving, from a server device, a first advertisement message including information for providing an audio streaming service and a second advertisement message including synchronization information for synchronization between the client device and the server device; receiving, from the server device, a third advertisement message including transmission timing information of the audio data related to the audio streaming service, wherein audio data information for providing information on the audio data is included in at least one of the second advertisement message and the third advertisement message; receiving, from the server device, the audio data through isochronous channel; obtaining, from an user, specific information related to whether to permit a provision of the audio streaming service based on the audio data information; and decoding the audio data based on the specific information representing permission to provide the audio data.

Method for receiving audio data by using bluetooth technology, and apparatus therefor

A method for receiving audio data using Bluetooth Low Energy technology, the method performed by a client device comprising: receiving, from a server device, a first advertisement message including information for providing an audio streaming service; receiving, from the server device, a second advertisement message including synchronization information for synchronization between the client device and the server device; receiving, from the server device, a third advertisement message including an indicator representing that audio data of the audio streaming service is grouped with audio data information for the audio data and transmitted; receiving, from the server device, broadcast audio data including the grouped audio data and the audio data information based on the indicator, through an isochronous channel; obtaining, from an user, specific information related to whether to permit a provision of the audio streaming service based on the audio data information; and

Method for receiving audio data by using bluetooth technology, and device therefor

Provided in the present specification is a method by which a user device performs a handover in a wireless communication system. Particularly, the method by which a user device performs a handover comprises the steps of: connecting by Bluetooth with a first target device on the basis of first authentication information; measuring a first link state between the user device and the first target device; measuring a second link state between the user device and the second target device; determining whether to perform a handover for the second target device on the basis of the first link state and the second link state; and performing a Bluetooth connection procedure with the second target device when performance of the handover for the second target device is determined, wherein second authentication information for the Bluetooth connection procedure with the second target device is the same as the first authentication information for the Bluetooth connection with the first target device.

Method for performing handover by using Bluetooth in wireless communication system, and device therefor

The present disclosure relates to a device and method for wireless power transfer to multiple devices using a multi-coil. The device disclosed in the specification comprises: a power pickup unit configured to receive wireless power from a wireless power transfer device having a plurality of primary coils at an operation frequency by magnetic coupling to the wireless power transfer device and convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit including an in-band communication module configured to be supplied with the direct current signal from the power pickup unit and perform communication with the wireless power transfer device by using the operating frequency, and an out-band communication module configured to perform communication with the wireless power transfer device by using a frequency other than the operating frequency; and a load configured to be supplied with the direct current signal from the power pickup unit. In a one-to-multiple wireless power transfer system using a multi-coil, various applications of wireless power can be efficiently supported by defining configuration information, control information, management information, and procedures for the exchanges thereof as an out-band communication protocol.

Apparatus and method for two-channel communication in a wireless power transfer

The present disclosure relates to a method and apparatus for controlling a power by using the Bluetooth Low Energy technology performed by a control device. According to the present disclosure, the method and apparatus includes establishing a connection with a first device and a second device through Bluetooth Low Energy (BLE) and receiving, from the first device, a first request message for requesting a transmission power change of the first device. In addition, the method and apparatus includes receiving, from the second device, a second request message for requesting a transmission power change of the second device and changing a transmission power of the control device to a specific transmission power value based on the first change value and the second change value.

Method and apparatus for controlling power of device by using bluetooth technology

Disclosed is a mobile terminal comprising: a communication unit for communicating with a plurality of target devices in a Bluetooth Low Energy (BLE) manner; a camera for capturing an image; and a controller configured for: receiving a plurality of advertisement information respectively including a plurality of shape information of the plurality of target devices from the plurality of target devices; and when first and second target devices among the plurality of target devices have the same shape information and when a distance of the first target device is equal to a distance of the second target device, activating a connection between the mobile terminal and the first target device based on an operation of at least one of the first target device or the second target device.

Mobile terminal

The present invention relates to a method and an apparatus for calling a voice recognition service by using Bluetooth low energy (LE). In particular, a method performed by a first device may comprise the steps of: receiving a first request message requesting start of a voice recognition service, from a second device connected to the first device through Bluetooth communication, wherein the first request message is generated by generation of a first wake word pre-configured in the second device; executing a voice gateway connected to multiple voice managers in response to the first request message; and executing a voice recognition service between the second device and a first voice manager determined by the voice gateway among the multiple voice managers.

Method and apparatus for calling voice recognition service by using Bluetooth low energy technology

The disclosure relates to a method and an apparatus for providing a service by a first device with a main device in a wireless communication system. The disclosure provides a method and an apparatus in which: in a specific state, a first device transmits an advertising packet indicating a state of the first device to the main device, connects with the main device via Bluetooth LE, on the basis of the advertising packet, and then activates the main power in order to provide a specific service together with the main device, wherein the specific mode state indicates a state in which a low power wireless communication module for transmitting or receiving a packet of the Bluetooth LE has been activated and the main power has been deactivated, and the main power is activated when the first device recognizes activation of the main power of the main device.

Method and apparatus for providing service by using Bluetooth low energy technology

Disclosed herein is a method and apparatus for processing A first device for processing a voice command received from at least one device using a Bluetooth low energy technology, comprising: Specifically, a method performed by a first device includes transmitting a first advertising message to a peripheral device; receiving a first request message requesting establishment of an audio channel for transmitting and receiving the voice command from a second device; establishing the audio channel with the second device; and receiving a voice command instructing performance of a particular service from the second device through the audio channel.

Method and apparatus for processing audio signal by using Bluetooth technology

Disclosed is an authentication method and system for a device using a Bluetooth technology. A method for performing authentication by a first device, using Bluetooth low energy (LE), according to an embodiment of the present invention comprises: authenticating a user on the basis of ID information of the user; and authenticating a device by comparing information acquired from a user input with information acquired using an exchanged public key. The authentication scheme for a device is determined according to the input/output capability of the device.

Growing community of inventors

Seoul, South Korea

Taeyoung Song