Patents by Inventor Hideki Kakeya

Hideki Kakeya 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: 20230396755
    Abstract: An image display device displays a stereoscopic image by using a parallax barrier method and includes a transmissive image display surface on which images of left-eye image data and right-eye image data are alternately displayed; an image forming unit including optical members having strip-shaped patterns with optical properties arranged on a surface located on a back surface side of the image display surface; and strip-shaped light sources arranged on an illumination arrangement surface, which is a surface located on a back surface side of the image forming unit, and configured to irradiate the image display surface with illumination light. A slit area of the parallax barrier method is formed by an image obtained by forming an image of the illumination light from the strip-shaped light sources on the back surface side of the image display surface by using the optical members of the image forming unit.
    Type: Application
    Filed: October 19, 2021
    Publication date: December 7, 2023
    Inventors: Hideki KAKEYA, Hayato MITOMI
  • Patent number: 11300807
    Abstract: An image display device acquires positional information including a distance between at least one eye of an observer and an image display surface, and corrects, based on the acquired positional information, a relative positional relationship between slit areas and an image displayed on the image display surface, by using a width smaller than the width of one subpixel as a minimum correction unit.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: April 12, 2022
    Assignee: University of Tsukuba
    Inventors: Hideki Kakeya, Ayuki Hayashishita
  • Publication number: 20200387005
    Abstract: An image display device acquires positional information including a distance between at least one eye of an observer and an image display surface, and corrects, based on the acquired positional information, a relative positional relationship between slit areas and an image displayed on the image display surface, by using a width smaller than the width of one subpixel as a minimum correction unit.
    Type: Application
    Filed: December 5, 2018
    Publication date: December 10, 2020
    Inventors: Hideki Kakeya, Ayuki Hayashishita
  • Patent number: 6788274
    Abstract: A stereoscopic image display apparatus includes at least one display apparatus that displays parallactic first and second images; an image-separation apparatus that separates the first and second images from the display apparatus; an image formation system that form the separated first and second images on the respective eyes of a person viewing the stereoscopic images; and a position detection means able to acquire information on the positions of the viewer's eyeballs. The image-separation apparatus is provided between the display apparatus and the image formation system on a light path on which light information emitted by the display apparatus reaches the viewer. The image formation system is positioned between the image-separation apparatus and the viewer, and real images are formed between the image formation system and the viewer. Also, display contents of the first and second images are changed based on the positions of the viewer's eyeballs.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: September 7, 2004
    Assignee: National Institute of Information and Communications Technology
    Inventor: Hideki Kakeya
  • Patent number: 6614426
    Abstract: A method for displaying simulated 3D space as an image includes the steps presenting a different image to each eye of a viewer by use of a 3D image display apparatus having an image display section, and using a convex lens to present as a real image within reach of the viewer's hands a 3D image produced from the images displayed at the image display section by parallax between the eyes. A device is provided for carrying out the method.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: September 2, 2003
    Assignee: Communications Research Laboratory, Independent Administrative Institution
    Inventor: Hideki Kakeya
  • Publication number: 20010010508
    Abstract: A stereoscopic image display apparatus includes at least one display apparatus that displays parallactic first and second images; an image-separation apparatus that separates the first and second images from the display apparatus; an image formation system that foes the separated first and second images on the respective eyes of a person viewing the stereoscopic images; and a position detection means able to acquire information on the positions of the viewer's eyeballs. The image-separation apparatus is provided between the display apparatus and the image formation system on a light path on which light information emitted by the display apparatus reaches the viewer. The image formation system is positioned between the image-separation apparatus and the viewer, and real images are formed between the image formation system and the viewer. Also, display contents of the first and second images are changed based on the positions of the viewer's eyeballs.
    Type: Application
    Filed: January 31, 2001
    Publication date: August 2, 2001
    Applicant: Communications Research Laboratory
    Inventor: Hideki Kakeya