Patents by Inventor Chang Hwan Yoon

Chang Hwan Yoon 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).

  • Publication number: 20240169198
    Abstract: An apparatus for training a deep learning model for classifying emotions from biosignals includes: a memory configured to store a program for training the deep learning model; and a processor configured to train the deep learning model by executing the program, wherein, when the processor executes the program, the processor inputs an input matrix to an attention layer constituting the deep learning model, the input matrix being composed of a plurality of features each mapped to a plurality of channels and a plurality of feature groups as the biosignals are acquired from a plurality of channels and the biosignals acquired from each channel are divided into the plurality of feature groups, and the attention layer operates to mask the input matrix using an attention matrix in which an importance of features in each channel is reflected.
    Type: Application
    Filed: September 6, 2023
    Publication date: May 23, 2024
    Inventors: MUHAMMAD ZUBAIR, Sung Pil WOO, Chang Woo YOON, Sun Hwan LIM
  • Patent number: 10722202
    Abstract: The present invention comprises: a first X-ray irradiation apparatus and a second X-ray irradiation apparatus for irradiating a subject with X-rays; an X-ray generation unit supporting so that first and second X-rays irradiated onto the subject are detected by a set detector when the subject is irradiated with the first and second X-rays from the first and second X-ray irradiation apparatuses, respectively; and a mode selection unit for allowing selection of any one mode from among a 2D imaging mode and 3D imaging mode, wherein the angles with respect to the subject of the first and second X-ray irradiation apparatuses are determined on the basis of said any one mode selected by means of the mode selection unit from among the 2D imaging mode and 3D imaging mode. According to the present invention, the mode can be easily selected according to need from among the 2D imaging mode and 3D imaging mode.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: July 28, 2020
    Assignee: Seoul National University Hospital
    Inventors: Chang Hwan Yoon, Dong Hoon Han
  • Publication number: 20190261937
    Abstract: The present invention comprises: a first X-ray irradiation apparatus and a second X-ray irradiation apparatus for irradiating a subject with X-rays; an X-ray generation unit supporting so that first and second X-rays irradiated onto the subject are detected by a set detector when the subject is irradiated with the first and second X-rays from the first and second X-ray irradiation apparatuses, respectively; and a mode selection unit for allowing selection of any one mode from among a 2D imaging mode and 3D imaging mode, wherein the angles with respect to the subject of the first and second X-ray irradiation apparatuses are determined on the basis of said any one mode selected by means of the mode selection unit from among the 2D imaging mode and 3D imaging mode. According to the present invention, the mode can be easily selected according to need from among the 2D imaging mode and 3D imaging mode.
    Type: Application
    Filed: April 26, 2017
    Publication date: August 29, 2019
    Inventors: Chang Hwan YOON, Dong Hoon HAN
  • Patent number: D436423
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: January 16, 2001
    Assignee: Yujin S&T Company, Ltd.
    Inventor: Chang Hwan Yoon