Patents by Inventor YEONGJAE LEE

YEONGJAE LEE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11544549
    Abstract: A processor-implemented neural network method includes calculating individual update values for a weight assigned to a connection relationship between nodes included in a neural network; generating an accumulated update value by accumulating the individual update values in an accumulation buffer; and training the neural network by updating the weight using the accumulated update value in response to the accumulated update value being equal to or greater than a threshold value.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: January 3, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Junhaeng Lee, Hyunsun Park, Yeongjae Choi
  • Publication number: 20220287534
    Abstract: Disclosed is a robot system including: a robot cleaner configured to perform wet cleaning in a cleaning zone; a server configured to communicate with the robot cleaner and perform control of the robot cleaner; and a user terminal configured to be in association with the robot cleaner, and control the robot cleaner as an application for the control of the robot cleaner is activated, wherein the robot cleaner includes: a main body configured to form an outer shape; a pair of rotary mop modules configured to be rotatably installed in the main body, move the main body while rotating, and have a mop cloth attached to a rotating plate of a lower portion; a drive motor configured to rotate the pair of rotary mop modules; a mop detecting unit configured to detect an error state of the mop cloth attached to the rotating plate and output a detection signal; and a controller configured to determine the error state of the mop cloth according to the detection signal from the mop detecting unit, and control driving of the
    Type: Application
    Filed: February 17, 2020
    Publication date: September 15, 2022
    Inventors: Jaewon JANG, Yeongjae LEE, Seaunglok HAM
  • Publication number: 20220287532
    Abstract: Disclosed is a robot cleaner including: a main body forming an outer shape; a pair of rotary mops moving the main body while rotating in contact with a floor; a drive motor rotating the pair of rotary mops; a pump connected to a water tank and driving a nozzle for spraying water to the rotary mop; and a controller for determining water content of the rotary mop in a preliminary step before wet cleaning, and controlling to start the wet cleaning after driving the pump until the water content of the rotary mop satisfy a certain level. Accordingly, it is possible to detect a change in the output current of the motor of the rotary mop of the robot cleaner and determine the water content according to the change in the current value.
    Type: Application
    Filed: February 17, 2020
    Publication date: September 15, 2022
    Inventors: Jaewon JANG, Yeongjae LEE, Youngbin KIM
  • Patent number: 11432695
    Abstract: Disclosed is a mobile robot including a body, a rotating plate rotatably installed on the body and having a lower surface where a mop portion is attached, and an attachment guider installed on the lower surface of the rotating plate to guide an attachment position of the mop portion. The attachment guider includes a guide rim and a plurality of elastic pieces. The guide rim is disposed to surround a rotation axis of the rotating plate. The plurality of elastic pieces extend from the guide rim in a direction toward the rotation axis, have a free end protruding to a lower side or downward than the guide rim, and are spaced apart from each other along a circumference of the guide rim.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: September 6, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaewon Jang, Youngbin Kim, Yeongjae Lee
  • Publication number: 20210031244
    Abstract: The present disclosure relates to a docking apparatus for a mobile robot including a sterilization unit, which emits germicidal light to a floor cloth to sterilize the floor cloth, and which includes: a germicidal lamp which vertically overlaps with the floor cloth of the mobile robot, and emits the germicidal light to a front end thereof; a diffusing part for diffusing the germicidal light to a rear end of the germicidal lamp; and a converging part for converging the germicidal light to a rear end of the diffusing part.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 4, 2021
    Applicant: LG ELECTRONICS INC.
    Inventors: Jaewon JANG, Youngbin KIM, Yeongjae LEE
  • Publication number: 20210031371
    Abstract: The present disclosure relates to a mobile robot, and more particularly to a mobile robot, including: a bumper which surrounds at least a portion of an outer circumference of the body; position restoring modules having an elastic member and disposed to be symmetrical to each other; a bumper guide module, having a guide hole and a protruding guider which moves inside the guide hole; and impact sensing modules configured to sense impact and disposed to be symmetrical to each other.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: LG ELECTRONICS INC.
    Inventors: JAEWON JANG, Youngbin Kim, Yeongjae Lee
  • Publication number: 20210030230
    Abstract: Disclosed is a mobile robot including a body, a rotating plate rotatably installed on the body and having a lower surface where a mop portion is attached, and an attachment guider installed on the lower surface of the rotating plate to guide an attachment position of the mop portion. The attachment guider includes a guide rim and a plurality of elastic pieces. The guide rim is disposed to surround a rotation axis of the rotating plate. The plurality of elastic pieces extend from the guide rim in a direction toward the rotation axis, have a free end protruding to a lower side or downward than the guide rim, and are spaced apart from each other along a circumference of the guide rim.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: LG ELECTRONICS INC.
    Inventors: Jaewon JANG, Youngbin KIM, Yeongjae LEE
  • Publication number: 20210030229
    Abstract: The present disclosure discloses that the robot cleaner includes a mop module including a left rotating plate to which a mop is attached to the bottom surface and a right rotating plate to which the mop is attached to the bottom surface; a base on which the mop module is installed; a case disposed to cover at least an upper portion and a part of a side of the base; and a plurality of push supporters supporting the case spaced apart from the base, wherein each push supporter provides the case with the elastic restoring force at least in the upper direction of the base and the outer direction of the base.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: LG ELECTRONICS INC.
    Inventors: JAEWON JANG, YOUNGBIN KIM, YEONGJAE LEE
  • Publication number: 20210030233
    Abstract: A mobile robot is disclosed, including a body, a mop module installed on the body and being configured to clean using water, a water tank removably disposed in the body and being configured to store water to be supplied to the mop module, and a detachable water tank module installed on the water tank. The water-tank detachable module includes a hook engaged with or coupled to the body and an operation button disposed on a surface of the water tank to operate the hook.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: LG Electronics Inc.
    Inventors: Jaewon JANG, Minwoo LEE, Yeongjae LEE
  • Publication number: 20210030236
    Abstract: A center of gravity of a mobile cleaning robot may be positioned on an imaginary central longitudinal axis of the mobile robot. The center of gravity of the mobile robot may be positioned at a front side of an imaginary central horizontal line connecting spin rotation axes of left and right spin mops of the mobile robot. The center of gravity of the mobile robot may also be positioned at a front side of a center of gravity of a battery and a center of gravity of a water tank, and at a rear side of a center of gravity of a sweep module of the mobile robot.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: LG ELECTRONICS INC.
    Inventors: Jaewon JANG, Youngbin KIM, Yeongjae LEE
  • Publication number: 20210030234
    Abstract: The present disclosure relates to a mobile robot, including: a mop module having a pair of spin mops, which rotate clockwise or counter-clockwise, and a mop motor configured to provide a driving force to the pair of spin mops; a sweep module disposed forward of and spaced apart from the mop module, and having a collecting part, which forms a collecting space to store foreign materials, a sweeping part configured to introduce foreign materials into the collecting space while rotating, and a sweeping motor configured to provide a driving force to the sweeping part; a body, on which the mop module and the sweep module are disposed; and a first floor sensor disposed forward of the sweep module, and configured to sense reflectance of light reflected from a floor.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 4, 2021
    Applicant: LG ELECTRONICS INC.
    Inventors: Jaewon JANG, Seunglok HAM, Yeongjae LEE