Patents by Inventor KYUNG-CHUL AHN

KYUNG-CHUL AHN 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: 11949881
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 2, 2024
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
  • Patent number: 10261218
    Abstract: A strengthened cover lens is disclosed to include a substrate, including an upper surface, a lower surface substantially parallel to the upper surface, a side surface located between the upper surface and the lower surface, and the side surface being substantially perpendicular to the upper surface and the lower surface, an upper chamfer surface formed between the upper surface and the side surface and the upper chamfer surface being adjacent the side surface, a concave portion formed between the upper surface and the upper chamfer surface, and a protection layer covering at least the concave portion and the upper chamfer surface, and a method for strengthening a cover lens being durable for abrasive condition by rigid body such as metal in common use is also provided.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: April 16, 2019
    Assignee: BUWON PRECISION SCIENCES CO., LTD
    Inventor: Kyung-Chul Ahn
  • Patent number: 10054716
    Abstract: A strengthened cover lens is disclosed to include a substrate, including an upper surface, a lower surface substantially parallel to the upper surface, a side surface located between the upper surface and the lower surface, and the side surface being substantially perpendicular to the upper surface and the lower surface, an upper chamfer surface formed between the upper surface and the side surface and the upper chamfer surface being adjacent the side surface, a concave portion formed between the upper surface and the upper chamfer surface, and a protection layer covering at least the concave portion and the upper chamfer surface, and a method for strengthening a cover lens being durable for abrasive condition by rigid body such as metal in common use is also provided.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: August 21, 2018
    Assignee: Buwon Precision Sciences Co., Ltd.
    Inventor: Kyung-Chul Ahn
  • Patent number: 9477334
    Abstract: A curved touch panel and a method for fabricating the same are disclosed. The curved touch panel with a predetermined curvature, includes a curved substrate having a curved upper surface and a curved lower surface, the upper surface being chemically strengthened and the lower surface being acid-etched, an adhesive layer disposed on one of the curved upper surface and the curved upper surface of the curved substrate, and a curved touch sensor plate with flexibility having a curved upper surface and curved lower surface disposed on the adhesive layer opposite to the curved substrate, wherein the curved upper surface and the curved lower surface are acid-etched, and the curved substrate, the adhesive layer, and the curved touch sensor plate are attached together.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: October 25, 2016
    Assignee: BUWON PRECISION SCIENCES CO., LTD.
    Inventor: Kyung-Chul Ahn
  • Publication number: 20160124534
    Abstract: A curved touch panel and a method for fabricating the same are disclosed. The curved touch panel with a predetermined curvature, includes a curved substrate having a curved upper surface and a curved lower surface, the upper surface being chemically strengthened and the lower surface being acid-etched, an adhesive layer disposed on one of the curved upper surface and the curved upper surface of the curved substrate, and a curved touch sensor plate with flexibility having a curved upper surface and curved lower surface disposed on the adhesive layer opposite to the curved substrate, wherein the curved upper surface and the curved lower surface are acid-etched, and the curved substrate, the adhesive layer, and the curved touch sensor plate are attached together.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 5, 2016
    Inventor: Kyung-Chul AHN
  • Publication number: 20160091636
    Abstract: A strengthened cover lens is disclosed to include a substrate, including an upper surface, a lower surface substantially parallel to the upper surface, a side surface located between the upper surface and the lower surface, and the side surface being substantially perpendicular to the upper surface and the lower surface, an upper chamfer surface formed between the upper surface and the side surface and the upper chamfer surface being adjacent the side surface, a concave portion formed between the upper surface and the upper chamfer surface, and a protection layer covering at least the concave portion and the upper chamfer surface, and a method for strengthening a cover lens being durable for abrasive condition by rigid body such as metal in common use is also provided.
    Type: Application
    Filed: September 29, 2014
    Publication date: March 31, 2016
    Inventor: KYUNG-CHUL AHN