Lg Electronics Inc.

Seonghun Lee

Bongsik Kwak

Yongcheol Park

Jeongkyo Seo

Byungsang Jung

Jaesung Lee

Hwanyong Kim

Jihyun Lee

Joonho Park

Sungkyu Kim

Jinho Youn

Jinmoo Park

Seungje Park

Jaeyeol Kim

Sooyong Park

Jaesung Yang

Seonwook Park

Gyoocheol Choi

Yongjun Son

Gyunghwan Yook

Kyunghwan Kim

Taewook Kwon

Sangdoo Ha

Wonbok Lee

Joonggil Jeong

Minsoo Kim

Hyunbeom Lee

Hyoungseok Kim

Junchan Kwon

Hyengcheul Choi

Hyokune Hwang

Hongkwon Kim

Dohyeon Son

Hyunggeol Kwak

Jinhong Kim

Beomseok Chae

Jaesoon Kwon

Gyunghwan Yuk

Woojoo Choi

Jonggu Kim

Seungjin Han

Youngchan Cho

Gynghwan Yuk

Provided is a method for controlling a mask apparatus. The method for controlling the mask apparatus includes measuring a current pressure value with respect to a mask by using a pressure sensor, comparing each of a preset atmospheric pressure maximum estimation and a preset and a preset atmospheric pressure minimum estimation to the current pressure value; updating the atmospheric pressure maximum estimation and the atmospheric pressure minimum estimation according to the comparison result, and controlling a voice output of a speaker based on a difference between the updated atmospheric pressure maximum estimation and the updated atmospheric pressure minimum estimation.

Mask apparatus and method for controlling the same

A wireless power transmission apparatus includes a shielding plate, a transmission coil on the shielding plate, and a shielding member disposed on the shielding plate and configured to surround the transmission coil. The shielding plate may shield a magnetic field formed to a lower side of the transmission coil. The shield member can offset the magnetic field formed on the side of the transmission coil. Thus, the embodiment can minimize EMI or EMF caused by the magnetic field formed on the lower side and the side of the transmission coil.

Wireless power transmission apparatus

A mask apparatus includes a mask body, a fan module, a seal that defines a breathing space, a pressure sensor coupled to the mask body and configured to sense an air pressure in the breathing space, and a controller coupled to the mask body and configured to control a rotation speed of the fan module based on the air pressure. The controller is configured to determine a breathing cycle based on a maximum pressure value and a minimum pressure value among air pressure values sensed by the pressure sensor, determine a time difference between a maximum time point and a minimum time point, determine an expected time point of inhalation in a subsequent breathing cycle based on the breathing cycle and the time difference, and increase the rotation speed of the fan module based on a current time corresponding to the expected time point of inhalation.

A wireless power transmitting device according to an embodiment of the present specification transmits wireless power to a wireless power receiving device, and includes a power conversion circuit including a primary coil for transmitting the wireless power to the wireless power receiving device and a communication/control circuit for communicating with the wireless power receiving device and controlling the power conversion circuit, wherein, to detect foreign substances between the wireless power receiving device and the wireless power transmitting device, the communication/control circuit stops the transmission of the wireless power for a slot time, detects the foreign substances on the basis of a change in the voltage or current of the primary coil within the slot time, and sets the slot time to start from a point in time when the current of the primary coil is 0.

Wireless power transmitting device and method of detecting foreign substances by wireless power transmitting device

A wireless power transmitting device according to an embodiment of the present specification relates to a wireless power transmitting device for transmitting wireless power to a wireless power receiving device, and comprises: a power conversion circuit including a primary coil for transmitting the wireless power to the wireless power receiving device; and a communication/control circuit for communicating with the wireless power receiving device and controlling the power conversion circuit, wherein, before transmitting the wireless power to the wireless power receiving device, the communication/control circuit temporarily applies driving power to the primary coil and then stops the transmission of the driving power, and obtains a quality factor on the basis of a change in the voltage or current of the primary coil during a period of time in which the transmission of the driving power is stopped.

Wireless power receiving device and method of obtaining quality factor of wireless power transmitting device

A mask apparatus includes a mask body having a fan module, a seal defining a breathing space, a pressure sensor sensing air pressure in the breathing space, a mask body cover coupled to the mask body, and a controller that controls a rotation speed of the fan module based on pressure values. The controller is configured to determine breathing information including a maximum pressure value and time point, and a minimum pressure value and time point, determine a breathing state of a user based on the breathing information, determine whether the breathing state is a steady state, determine a tidal volume of the user based on the breathing information, and control the rotation speed of the fan module based on the tidal volume.

A wireless power transmission apparatus comprises: a plurality of transmission coils configured to transmit a wireless power to a wireless power reception apparatus; a shielding coil which is arranged on at least one surface of a dielectric substrate, and is configured in a loop shape having at least two turns so as to surround the plurality of transmission coils; and a capacitor configured to connect one point to the other point of the shielding coil. The plurality of transmission coils are arranged inside the shielding coil disposed on the dielectric substrate, and the direction of a magnetic field formed at one side and the other side of the plurality of transmission coils adjacent to the shielding coil is formed to be opposite to the direction of a magnetic field formed around the shielding coil so that the shielding coil shields external exposure of electromagnetic waves by the plurality of transmission coils.

Wireless power transmission apparatus, wireless power reception apparatus, and wireless charging system

Provided is a mask apparatus. The mask apparatus includes a mask body in which a microphone and a speaker are installed, a face guard coupled to a rear surface of the rear body so as to be in close contact with a user's face and having a breathing space therein, a pressure sensor installed in the mask body to measure a pressure of the breathing space, and a controller configured to compare a current pressure value measured by the pressure sensor to a reference pressure value and control a voice output of the speaker based on a difference between the current pressure value and the reference pressure value.

The present disclosure provides a display system including: a display apparatus; a wireless power reception apparatus configured to supply power to the display apparatus; and a wireless power transmission apparatus configured to emit a laser beam toward the wireless power reception module, wherein the wireless power reception module is formed as a bar type; and the wireless power transmission module comprises a light source configured to emit light of a specific wavelength as a laser beam, and a light shaping unit configured to shape the light of the light source and to convert the shaped light into a laser beam having a different cross-section and output the laser beam. Accordingly, by performing wireless power transmission using laser light, which satisfies the electromagnetic interference (EMI) requirements, wireless power may be transmitted to high-quality wall-mounted TVs and AV devices.

Wireless power transmission/reception apparatus and display system including the same

The present invention relates to an apparatus and a method for supporting heterogeneous communication in a wireless power transmission system. The present disclosure discloses a wireless power receiver comprising: a power pickup unit configured to receive, from a wireless power transmitter, a digital ping signal or wireless power by magnetically coupling with the wireless power transmitter at an operating frequency, and to convert an alternating current signal generated by the wireless power into a direct current signal; a communication/control unit configured to receive the direct current signal from the power pickup unit, and to perform at least one of an in-band communication using the operating frequency and an out-band communication using a frequency other than the operating frequency; and a load configured to receive the direct current signal from the power pickup unit. As a heterogeneous communication protocol can be selected at an early stage of power transmission between the wireless power transmitter and the wireless power receiver, it is possible to support various applications of wireless power transmission.

Apparatus and method for supporting heterogeneous communication in wireless power transmission system

The present specification relates to a cooker, wherein a separate-type cooking module is arranged above a fixed-type cooking module to be charged with power or operated, and when used separately, the separate-type cooking module and the fixed-type cooking module are respectively operated.

Cooker

The present specification relates to a wireless power receiving device, receiving method, and receiving system, the device comprising individual rectifiers for each receiving coil, wherein the individual rectifiers comprise isolators for isolating a receiving coil for PC0 from a receiving coil for PC1.

Low power- and medium power-compatible wireless charging receiving device and method

The present disclosure relates to a wireless power transmission device. A wireless power transmission device according to an embodiment of the present disclosure includes: a coil part including a plurality of partially overlapping coils; a coil combination generator configured to generate coil combinations including at least one of the plurality of coils; and a controller configured to transmit a coil selection signal through the coil combinations and to select an operating coil combination from the coil combinations based on a response intensity of a response signal for the coil selection signal and charging efficiency of a wireless power reception device. Accordingly, a high-efficiency charging area can be extended in partially overlapping multiple coils.

Wireless power transmission device

An apparatus and a method for performing handover between heterogeneous communication methods. A wireless power transmission apparatus and reception apparatus can indicate whether to support out-band communication thereof on the basis of an out-band flag. The wireless power transmission apparatus can request the wireless power reception apparatus to start a handover by using a bit pattern requesting the handover. The handover procedure to out-band may be performed in a negotiation phase or may be performed in a separate handover phase. Information for establishing an out-band communication connection can be transmitted from the wireless power reception apparatus to the wireless power transmission apparatus through in-band communication. Also, even after the handover to the out-band is completed, it is possible to periodically or intermittently perform the in-band communication in a power transmission phase to detect a swap of the wireless power reception apparatus.

The present disclosure relates to an apparatus and a method for supporting an improved communication speed in a wireless power transmission system. In such present specification, provided is the method comprising the steps of: transmitting at least one data packet to a wireless power reception apparatus; receiving, from the wireless power reception apparatus, a first request packet requesting a change in a communication speed of the wireless power transmission apparatus; and changing the communication speed of the wireless power transmission apparatus on the basis of the first request packet, and transmitting, at the changed communication speed, a first response packet in response to the first request packet to the wireless power reception apparatus.

Growing community of inventors

Seoul, South Korea

Seonghun Lee