Lg Electronics Inc.

Sogang University Research Foundation

Sungwon Jung

Donghyun Kang

Jae Hyun Kim

Tacksung Choi

Heehyun Park

Yoonjae Lim

Minsoo Lee

Taeyoung Song

Hyunsik Yang

Taegil Cho

Hyeong-cheol Ryu

Taehyeon Kwon

Minjun Seo

Seungsu Lee

A spatial LSM tree apparatus includes: a blockchain configured of a plurality of data blocks each storing point data distributed over an entire spatial area; a memory unit including a component table storing information about a memory component storing a first index of a most recently stored point data in the blockchain and all components of a spatial LSM tree indexing the point data to cover the entire spatial area; and a disk unit storing a secondary index for the point data in chronological order stored in the blockchain through a plurality of disk components formed in a hierarchical structure among a plurality of levels.

Spatial LSM tree apparatus and method for indexing blockchain based geospatial point data

A rotary compressor is disclosed. The rotary compressor includes a sidewall path formed in an inner wall of a cylinder facing a vane slot and configured to form a space facing a side surface of a vane, and the vane is provided with a communication part configured to selectively communicate between the outside of the vane slot and the sidewall path according to a position of the vane.

Rotary compressor with selective oil communication

A terminal for outputting multi-channel audio using a plurality of audio devices, the terminal can include a camera; a communication interface configured to communicate with a plurality of first audio devices; and a processor configured to receive device information about the plurality of first audio devices through the communication interface or the camera; configure a multi-channel audio system including at least two second audio devices selected from among the plurality of first audio devices based on the device information; and output audio data through the at least two second audio devices based on audio system information corresponding to the multi-channel audio system.

Terminal and method for outputting multi-channel audio by using plurality of audio devices

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

The present disclosure relates to a method and apparatus for processing a multimedia signal. More specifically, the present disclosure relates to a method comprising obtaining at least one video object from the multimedia signal and at least one audio object from the multimedia signal, extracting video feature information for the at least one video object and audio feature information for the at least one audio object, and determining a correlation between the at least one video object and the at least one audio object through an object matching engine based on the video feature information and the audio feature information, and an apparatus therefor.

Method and apparatus for sound object following

Discloses are a data clustering apparatus and method based on a range query using a CF tree. The data clustering apparatus includes a CF tree construction unit configured to construct a CF tree, including a leaf node configured with a micro cluster (MC) and an index node configured with a sub-cluster (SC), based on a plurality of data included in a data set, a micro cluster segment (MCS) generation unit configured to generate an MCS based on a distance between the MCs while sequentially searching the leaf node to a right, and a cluster set generation unit configured to generate a cluster set by performing a range query on the MCS.

Data clustering apparatus and method based on range query using CF tree

The present invention relates to a method and an apparatus for connecting adjacent devices using Bluetooth Low Energy (LE). In particular, a method performed in a first device comprises the steps of: receiving an advertisement message from at least one adjacent device, wherein the advertisement message includes information on a content type supported by the at least one adjacent device; transmitting, to the at least one adjacent device, a notification message for notifying a pop-up for a user of the first device on the basis of the advertisement message; and transmitting a connection request message for requesting connection to the at least one adjacent device according to an input of the user.

Growing community of inventors

Seoul, South Korea

Sungwon Jung