Patents by Inventor Kousuke Imamura

Kousuke Imamura 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).

  • Image encoding of moving pictures
    Patent number: 7236634
    Abstract: In an encoding method of moving pictures which generates a predictive picture for a current picture based on a reference picture and a motion vector, a macroblock is divided into subblocks. In each of the plurality of subblocks, an initial value of the motion vector is set and an evaluated value E on a difference between the current picture and the reference picture is calculated along a steepest descent direction to determine the minimum value. Then, the smallest evaluated value is selected among the minimum values obtained on the plurality of subblocks to determine the motion vector based on the pixel position of the smallest value.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 26, 2007
    Assignee: Semiconductor Technology Academic Research Center
    Inventors: Junichi Miyakoshi, Masayuki Miyama, Masahiko Yoshimoto, Hideo Hashimoto, Kousuke Imamura
  • Image encoding of moving pictures
    Publication number: 20040151392
    Abstract: In an encoding method of moving pictures which generates a predictive picture for a current picture based on a reference picture and a motion vector, a macroblock is divided into subblocks. In each of the plurality of subblocks, an initial value of the motion vector is set and an evaluated value E on a difference between the current picture and the reference picture is calculated along a steepest descent direction to determine the minimum value. Then, the smallest evaluated value is selected among the minimum values obtained on the plurality of subblocks to determine the motion vector based on the pixel position of the smallest value.
    Type: Application
    Filed: November 10, 2003
    Publication date: August 5, 2004
    Applicant: SEMICONDUCTOR TECHNOLOGY ACADEMIC RESEARCH CENTER
    Inventors: Junichi Miyakoshi, Masayuki Miyama, Masahiko Yoshimoto, Hideo Hashimoto, Kousuke Imamura