Patents by Inventor Chang Yul Kim

Chang Yul Kim 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: 12253688
    Abstract: A system for driving an actuator which is capable of providing constant resolution regardless of a type of an actuator according to an aspect of the present invention includes an actuator driving circuit configured to generate a driving current for an operating actuator and output the generated driving current to the operating actuator, a current sensing unit configured to sense a current of the operating actuator and generate a sensing signal, and a gain adjustment unit configured to calculate a gain on the basis of a first maximum driving current range of the operating actuator and a second maximum driving current range of a reference actuator and change the sensing signal on the basis of the gain. A signal generated based on the second sensing signal is input to the actuator driving circuit.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: March 18, 2025
    Assignee: LX Semicon Co., LTD
    Inventors: Dong Gil Jeong, Kyu Ho Kim, Ho Yul Choi, Chang In Park
  • Publication number: 20230025837
    Abstract: Disclosed in the present specification is a self-checkout device to which hybrid product recognition technology is applied and which helps a user to more conveniently and quickly make a payment. The self-checkout device according to the present specification photographs a product with a plurality of cameras, and then recognizes a barcode by detecting a barcode region from the captured images and, simultaneously, extracts a feature point of the images such that a product can be recognized through the calculation of the proportion that matches with a reference image of the product. Thus, a product can be quickly recognized through barcode recognition and packaging paper recognition in a product image.
    Type: Application
    Filed: October 4, 2022
    Publication date: January 26, 2023
    Applicant: NEUROGIC INC.
    Inventor: Chang Yul Kim
  • Patent number: 11494573
    Abstract: Disclosed in the present specification is a self-checkout device to which hybrid product recognition technology is applied and which helps a user to more conveniently and quickly make a payment. The self-checkout device according to the present specification photographs a product with a plurality of cameras, and then recognizes a barcode by detecting a barcode region from the captured images and, simultaneously, extracts a feature point of the images such that a product can be recognized through the calculation of the proportion that matches with a reference image of the product. Thus, a product can be quickly recognized through barcode recognition and packaging paper recognition in a product image.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: November 8, 2022
    Assignee: NEUROGIC INC.
    Inventor: Chang Yul Kim
  • Publication number: 20210397800
    Abstract: Disclosed in the present specification is a self-checkout device to which hybrid product recognition technology is applied and which helps a user to more conveniently and quickly make a payment. The self-checkout device according to the present specification photographs a product with a plurality of cameras, and then recognizes a barcode by detecting a barcode region from the captured images and, simultaneously, extracts a feature point of the images such that a product can be recognized through the calculation of the proportion that matches with a reference image of the product. Thus, a product can be quickly recognized through barcode recognition and packaging paper recognition in a product image.
    Type: Application
    Filed: January 22, 2019
    Publication date: December 23, 2021
    Applicant: EXASCOPE INC. CO., LTD.
    Inventor: Chang Yul Kim