Patents by Inventor Hwan Yoo

Hwan Yoo 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: 12279732
    Abstract: A robot cleaner and a control method thereof are disclosed. A robot cleaner, according to an embodiment of the present invention, comprises: a tilt sensor module; a distance sensor module; and a light amount sensor module. Each piece of sensed information is transmitted to a lifting information calculation module. The lifting information calculation module calculates information on whether the robot cleaner is lifted, by using each piece of the transmitted information. If it is calculated that the robot cleaner is lifted off a floor, a power module is stopped. In addition, if it is calculated that the robot cleaner is not lifted off the floor, the power module is driven. Accordingly, when a user lifts the robot cleaner, injuries to the user caused by operation of a drive module can be prevented.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: April 22, 2025
    Assignee: LG ELECTRONICS INC.
    Inventors: Youngsub Lee, Hwan Yoo
  • Publication number: 20250124598
    Abstract: Disclosed herein are a deep neural network (DNN) learning method for generalizing appearance-based gaze estimation and an apparatus for the same. The deep neural network (DNN) learning method includes creating multiple augmented images based on an original image, inputting the multiple augmented images to a DNN to output a gaze estimation value, calculating a total loss between a gaze ground truth of the original image and the gaze estimation value through gaze consistency regularization (GCR) using a spherical gaze distance (SGD), and updating parameters of the DNN by backpropagation of the total loss.
    Type: Application
    Filed: August 6, 2024
    Publication date: April 17, 2025
    Inventors: Moon-Ki BACK, Jang-Hee YOO, Cheol-Hwan YOO, Byung-Ok HAN
  • Publication number: 20250125049
    Abstract: Disclosed herein is a method for assisting in Autism Spectrum Disorder (ASD) diagnosis. The method includes transmitting social-interaction-inducing content, receiving input images containing a response of an assessment subject to the social-interaction-inducing content, receiving an ASD diagnosis result for a preset number of input images, among the received input images, and outputting a diagnostic assistive result for the received input images using ASD diagnosis input for the preset number of input images and a pretrained global ASD diagnosis model.
    Type: Application
    Filed: August 6, 2024
    Publication date: April 17, 2025
    Inventors: Cheol-Hwan YOO, Moon-Ki BACK, Jang-Hee YOO, Byung-Ok HAN
  • Publication number: 20250114021
    Abstract: Disclosed herein are an interaction-based artificial intelligence analysis apparatus and method. The interaction-based artificial intelligence analysis apparatus is configured to output structured video content for each evaluation index so as to elicit an interaction to an examinee at each stimulus time-frame of a preset timeline, collect response data of the examinee for each evaluation index through a camera and a microphone at each response time-frame of the preset timeline, and analyze the response data for each evaluation index using an Artificial Intelligence (AI) analysis module corresponding to the evaluation index.
    Type: Application
    Filed: September 26, 2024
    Publication date: April 10, 2025
    Inventors: Jang-Hee YOO, Cheol-Hwan YOO, Jae-Yoon JANG, Byung-Ok HAN
  • Patent number: 12270108
    Abstract: The present invention relates to a plated steel sheet having excellent corrosion resistance, workability and surface quality, and at the same time, capable of reducing occurrence of liquid metal embrittlement (LME).
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: April 8, 2025
    Assignee: POSCO CO., LTD
    Inventors: Il-Ryoung Sohn, Sung-Joo Kim, Tae-Chul Kim, Bong-Hwan Yoo, Myung-Soo Kim, Jong-Sang Kim, Sang-Tae Han, Kwang-Won Kim
  • Publication number: 20250078568
    Abstract: Disclosed herein are an emotion recognition method and method based on context information. The emotion recognition method includes detecting information corresponding to an emotion recognition subject from an input image, extracting a recognition subject feature based on the information corresponding to the emotion recognition subject, extracting a context feature based on the input image, storing the recognition subject feature and the context feature in a short-term memory, and storing the context feature in a long-term memory.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 6, 2025
    Inventors: Byung-Ok HAN, Moon-Ki BACK, Jang-Hee YOO, Cheol-Hwan YOO
  • Publication number: 20250003029
    Abstract: The present invention provides a plated steel sheet having excellent in corrosion resistance and surface appearance and a method for manufacturing the same. And more specifically, the present invention provides a Zn-Mg-Al-based plated steel sheet having excellent in corrosion resistance, surface appearance and image clarity after painting, and a method for manufacturing the same.
    Type: Application
    Filed: September 28, 2022
    Publication date: January 2, 2025
    Applicant: POSCO CO., LTD
    Inventors: Tae-Chul Kim, Sung-Joo Kim, Myung-Soo Kim, Bong-Hwan Yoo, Yong-Kyun Cho, Il-Ryoung Sohn
  • Publication number: 20240415413
    Abstract: Disclosed herein is a method for stereotyped behavior detection for supporting diagnosis of Autism Spectrum Disorder (ASD). The method includes detecting a target object to be assessed in an input video, detecting a section in which a periodic behavior occurs using an image sequence of the target object, and classifying a stereotyped behavior in the section in which the periodic behavior occurs.
    Type: Application
    Filed: May 10, 2024
    Publication date: December 19, 2024
    Inventors: Cheol-Hwan YOO, Moon-Ki BACK, Jang-Hee YOO, Byung-Ok HAN
  • Publication number: 20240409567
    Abstract: The present invention relates to a method of preparing a symmetric or asymmetric cyclic phosphine compound, the method including a step of reacting a cyclic phosphine compound with an organic halogen compound under a predetermined coupling agent. The present invention provides a method of preparing a symmetric or asymmetric cyclic phosphine compound that uses cheaper compounds compared to a conventional method, has excellent economics by stably storing reaction raw materials, improves productivity and yield due to easy reaction control and low generation of by-products, is easily applied on an industrial scale, and has excellent expandability or substitutivity of a synthetic route.
    Type: Application
    Filed: October 18, 2022
    Publication date: December 12, 2024
    Inventors: Dae Hwan YOO, Weon Ju YU, Jae Yeol MA, Kwang Ju JUNG
  • Publication number: 20240409568
    Abstract: The present invention relates to a method of preparing an asymmetric phosphate-based compound. According to the method of the present invention, since a thiolane-based cyclic compound is used alone in a hydrophobic solvent under a base-free condition, the yield of a desired compound may be increased due to excellent reaction stability and reduced side reactions.
    Type: Application
    Filed: October 18, 2022
    Publication date: December 12, 2024
    Inventors: Weon Ju YU, Jae Yeol MA, Kwang Ju JUNG, Dae Hwan YOO
  • Publication number: 20240407685
    Abstract: Disclosed herein is a method for supporting Autism Spectrum Disorder (ASD) diagnosis based Artificial Intelligence (AI). The method includes extracting a detection area and voice corresponding to an inspector from an input video, extracting a detection area and voice corresponding to an assessment subject from the input video, extracting a feature of the inspector and a feature of the assessment subject, and extracting an interaction feature using the feature of the inspector and the feature of the assessment subject.
    Type: Application
    Filed: April 1, 2024
    Publication date: December 12, 2024
    Inventors: Byung-Ok HAN, Moon-Ki BACK, Jang-Hee YOO, Cheol-Hwan YOO
  • Publication number: 20240368736
    Abstract: The present invention provides a plated steel sheet excellent in corrosion resistance and excellent in at least one of weldability and phosphatability, and a manufacturing method therefor. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet excellent in corrosion resistance, weldability and phosphatability, and a manufacturing method therefor.
    Type: Application
    Filed: September 28, 2022
    Publication date: November 7, 2024
    Applicant: POSCO CO., LTD
    Inventors: Sung-Joo Kim, Tae-Chul Kim, Myung-Soo Kim, Bong-Hwan Yoo, Yong-Kyun Cho
  • Publication number: 20240360541
    Abstract: The present invention provides a Zn—Mg—Al plated steel sheet having excellent in corrosion resistance and bendability, and a method for manufacturing same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, bendability, and plating adhesion, and a method for manufacturing the same.
    Type: Application
    Filed: September 27, 2022
    Publication date: October 31, 2024
    Applicant: POSCO CO., LTD
    Inventors: Tae-Chul Kim, Sung-Joo Kim, Myung-Soo Kim, Bong-Hwan Yoo, Yong-Kyun Cho, Il-Ryoung Sohn
  • Publication number: 20240360540
    Abstract: The present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance and whiteness, and a method for manufacturing the same. And more specifically, the present invention provides a Zn—Mg—Al-based plated steel sheet having excellent in corrosion resistance, whiteness and bendability, and a method for manufacturing the same.
    Type: Application
    Filed: September 28, 2022
    Publication date: October 31, 2024
    Applicant: POSCO CO., LTD
    Inventors: Tae-Chul Kim, Sung-Joo Kim, Myung-Soo Kim, Bong-Hwan Yoo, Yong-Kyun Cho, Il-Ryoung Sohn
  • Publication number: 20240213645
    Abstract: Provided is the broadband transition structure with mixed contact and non-contact protrusions having a first substrate and a second substrate which are adjacent to each other and transmitting a radio wave through a waveguide, in which the first substrate comprises a flat first side, a second side opposite to the first side, a first waveguide provided between the first side and the second side, a third side provided between the first side and the second side as a periphery of the first waveguide, a fourth side connecting the first side and the third side, a plurality of contact protrusions extending from the third side and contacting the second substrate, and a plurality of non-contact protrusions extending from the third side and non-contacting the second substrate.
    Type: Application
    Filed: December 20, 2023
    Publication date: June 27, 2024
    Inventors: Tae Hwan YOO, Sung Hwan KIM
  • Publication number: 20240206581
    Abstract: Provided is an electric ink hard hat system that changes color depending on a surrounding color and an operating method. The electronic ink hard hat system includes a control server configured to divide a work area in a closed-circuit television (CCTV) image into a plurality of grid-shaped sections and calculate a complementary color using red, green, and blue (RGB) values in a point of interest (POI) section where a worker is located among the divided sections, a communication module configured to receive changed color information including the complementary color from the control server, and a smart hard hat configured to output an outer color of a hard hat as the complementary color using electric ink technology, based on the changed color information.
    Type: Application
    Filed: July 26, 2023
    Publication date: June 27, 2024
    Inventors: Young-Hwan Yoo, Eun young Park, Jin Ho Jang, DONGJU KIM, Youngjin Shin
  • Publication number: 20240213683
    Abstract: The present disclosure is to provide a waveguide antenna to which a horn-type horizontal distribution divider structure is applied, and the waveguide antenna according to the present disclosure may comprise the first layer having a power feeder provided in the horizontal direction and the horizontal divider connected to the power feeder and provided in the horizontal direction, the second layer including the first divider power feeder connected to the first layer and connected to one side of the horizontal divider through the first through hole, the second divider power feeder connected to the other side of the horizontal divider through the second through hole, the first and second radio wave radiating units connected to the first divider power feeder, and the third and fourth radio wave radiating units connected to the second divider power feeder.
    Type: Application
    Filed: December 20, 2023
    Publication date: June 27, 2024
    Inventors: Tae Hwan YOO, Sung Hwan KIM
  • Patent number: 11998345
    Abstract: The present disclosure relates to a sensing device and a method for processing sensing data.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 4, 2024
    Assignee: NEOFECT CO., LTD.
    Inventors: Young Geun Choi, Sung Gon Moon, Byung Geol Park, Seo Jeong Han, Jin Young Cho, Keun Hyeok Yoo, Eun Jung Kim, Do Kyeong Ha, Kyung Hwan Yoo
  • Patent number: 11980330
    Abstract: The present invention relates to a robot cleaner capable of receiving a user input setting a reference distance for detecting a surrounding environment of a space to be cleaned through an external control device, and controlling driving based on the user input, and a robot cleaner system including the same, and according to the present invention, the actuator of the robot cleaner is controlled based on the reference distance set by the user, so that the robot cleaner can be controlled not to fall into inability to drive according to a cleaning environment.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: May 14, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Young Sub Lee, Hwan Yoo, Yonggil Shin
  • Publication number: 20240127627
    Abstract: Disclosed herein is an apparatus and method for detecting an emotional change through facial expression analysis. The apparatus for detecting an emotional change through facial expression analysis includes a memory having at least one program recorded thereon, and a processor configured to execute the program, wherein the program includes a camera image acquisition unit configured to acquire a moving image including at least one person, a preprocessing unit configured to extract a face image of a user from the moving image and preprocess the extracted face image, a facial expression analysis unit configured to extract a facial expression vector from the face image of the user and cumulatively store the facial expression vector, and an emotional change analysis unit configured to detect a temporal location of a sudden emotional change by analyzing an emotion signal extracted based on cumulatively stored facial expression vector values.
    Type: Application
    Filed: October 11, 2023
    Publication date: April 18, 2024
    Inventors: Byung-Ok HAN, Ho-Won KIM, Jang-Hee YOO, Cheol-Hwan YOO, Jae-Yoon JANG