公开(公告)号：US10551841B2

公开(公告)日：2020-02-04

申请号：US15666987

申请日：2017-08-02

Applicant: LG ELECTRONICS INC.

Inventor： Hyungtae Yun ,  Seungjin Ahn

IPC: G05D1/02 ,  A47L9/00 ,  A47L9/16 ,  A47L9/28 ,  A47L11/40

Abstract: A autonomous robot includes a main body, a driving unit to move the main body within an operation region, a battery to supply power to the driving unit, and a controller to control the driving unit in a manner that the main body travels along a wall of the operation region to move to a charging stand when a remaining power level of the battery drops below a reference power level, wherein the controller controls the driving unit in a manner that the main body escape from one region corresponding to a closed curve when a movement path of the main body forms the closed curve while the driving unit performs wall following.

公开(公告)号：US11743012B2

公开(公告)日：2023-08-29

申请号：US18049907

申请日：2022-10-26

Applicant: LG ELECTRONICS INC.

Inventor： Seungjin Ahn ,  Suckchel Yang ,  Seonwook Kim

IPC: H04L5/00 ,  H04W72/1273 ,  H04W76/20 ,  H04W72/0446

CPC classification number: H04L5/0051 ,  H04W72/0446 ,  H04W72/1273 ,  H04W76/20

Abstract: A method and an apparatus for transmitting or receiving a reference signal in a wireless communication system are disclosed. A method of receiving a tracking reference signal (TRS) by a terminal in a wireless communication system according to an embodiment of the present disclosure may comprise: receiving, from a network, at least one of first offset information related to at least one burst of the TRS, or second offset information related to the at least one burst; and receiving, from the network, the TRS in the at least one burst, wherein the first offset information is related to a first burst of the at least one burst, wherein, based on the second offset information being absent, a number of the at least one burst is one, and wherein, based on the second offset information being present, the second offset information indicates an offset between the first burst and a second burst.

公开(公告)号：US11541538B2

公开(公告)日：2023-01-03

申请号：US16473859

申请日：2017-12-08

Applicant: LG ELECTRONICS INC.

Inventor： Seungjin Ahn

IPC: B25J9/16 ,  A47L9/28 ,  B25J9/00 ,  B25J11/00

Abstract: A robot cleaner according to the present invention includes a body provided with a driving unit for movement, a position recognition unit provided in the body to recognize a position of the body, a storage unit configured to store, on a map, a region cleaned while the body is moving by the driving unit, and a control unit configured to control the driving unit, wherein the control unit determines whether a charging stand exists in a cleaning completed region on the map stored in the storage unit when a return condition that the body returns to the charging stand is satisfied, searches for an uncleaned region when the charging stand is not located in the cleaning completed region, and controls the driving unit such that the body moves from a current position to a point in a found uncleaned region or a point around the found uncleaned region.

公开(公告)号：US11892849B2

公开(公告)日：2024-02-06

申请号：US16943147

申请日：2020-07-30

Applicant: LG ELECTRONICS INC.

Inventor： Seungjin Ahn ,  Hyungyul Maeng

IPC: G05D1/02 ,  A47L11/40 ,  A47L11/282

CPC classification number: G05D1/0219 ,  A47L11/282 ,  A47L11/4011 ,  A47L11/4038 ,  A47L11/4061 ,  A47L11/4066 ,  A47L11/4083 ,  A47L2201/04 ,  A47L2201/06 ,  G05D2201/0203

Abstract: A mobile robot rotates a spin mop to move a main body along a surface and clean the surface. A location change of the main body during its motion is analyzed to determine if the robot is traveling abnormally. If abnormal traveling is occurring, the location where it is occurring is stored and re-cleaning of the location is initiated. The location where abnormal traveling occurred may be considered in next cleaning to improve cleaning efficiency.