Patents by Inventor Kodai Yamada

Kodai Yamada 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).

  • D-type flip-flop circuit
    Patent number: 11277122
    Abstract: A D-type flip-flop circuit 1 has a structure in which a pMOS transistor p8 and an nMOS transistor n8 are added to a general D-type flip-flop circuit comprising pMOS transistors p1 to p7, p11 to p15 and nMOS transistors n1 to n7, n11 to n15.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: March 15, 2022
    Assignees: National University Corporation Kyoto Institute of Technology, Dolphin Design
    Inventors: Kazutoshi Kobayashi, Jun Furuta, Kodai Yamada
  • D-TYPE FLIP-FLOP CIRCUIT
    Publication number: 20210226616
    Abstract: A D-type flip-flop circuit 1 has a structure in which a pMOS transistor p8 and an nMOS transistor n8 are added to a general D-type flip-flop circuit comprising pMOS transistors p1 to p7, p11 to p15 and nMOS transistors n1 to n7, n11 to n15.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 22, 2021
    Inventors: Kazutoshi KOBAYASHI, Jun FURUTA, Kodai YAMADA
  • Backlight luminance control apparatus and video display apparatus
    Patent number: 8373644
    Abstract: In a video display apparatus, a backlight for illuminating a liquid crystal panel is segmented into a plurality of areas. A frequency distribution processing unit calculates a dark pixel amount from the frequency distribution of the gradation values of pixels in a video image. A backlight control unit calculates a lower limit of luminance in each area included in the backlight so that the lower limit increases as the dark pixel amount becomes smaller. The backlight control unit adjusts the luminance in each area individually according to the gradation values in each portion of the video image, and adjusts the luminance in an area where the luminance is less than the lower limit to the lower limit. The difference in luminance between the areas illuminating dark portions of the video image is decreased, and the occurrence of luminance blur resulting from the difference in luminance between the areas is reduced.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: February 12, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Koike, Kohichi Takaku, Yoshinori Kohno, Shinichi Nagashima, Hideto Yagisawa, Kodai Yamada
  • BACKLIGHT LUMINANCE CONTROL APPARATUS AND VIDEO DISPLAY APPARATUS
    Publication number: 20100073276
    Abstract: In a video display apparatus, a backlight for illuminating a liquid crystal panel is segmented into a plurality of areas. A frequency distribution processing unit calculates a dark pixel amount from the frequency distribution of the gradation values of pixels in a video image. A backlight control unit calculates a lower limit of luminance in each area included in the backlight so that the lower limit increases as the dark pixel amount becomes smaller. The backlight control unit adjusts the luminance in each area individually according to the gradation values in each portion of the video image, and adjusts the luminance in an area where the luminance is less than the lower limit to the lower limit. The difference in luminance between the areas illuminating dark portions of the video image is decreased, and the occurrence of luminance blur resulting from the difference in luminance between the areas is reduced.
    Type: Application
    Filed: June 24, 2009
    Publication date: March 25, 2010
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Akira Koike, Kohichi Takaku, Yoshinori Kohno, Shinichi Nagashima, Hideto Yagisawa, Kodai Yamada