Patents by Inventor Kazuki Taira

Kazuki Taira 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: 20060256259
    Abstract: It is possible to reduce a crosstalk amount and stray light even if a viewing zone angle is wide or large. A stereoscopic image display apparatus includes: a flat display device and a beam controlling element provided on a front face of the flat display device. The beam controlling element includes: a first lens array having a plurality of lenses, a second lens array having a plurality of lenses, and a third lens array provided between the first lens array and the second lens array and having a plurality of lenses. The third lens array is configured such that each lens thereof on the first lens array side coincides with a corresponding lens thereof on the second lens array, and refractive indexes of the first and the second lens arrays are approximately the same, and a refractive index of the third lens array is different from the refractive indexes of the first and the second lens arrays.
    Type: Application
    Filed: March 17, 2006
    Publication date: November 16, 2006
    Inventors: Ayako Takagi, Kazuki Taira, Rei Hasegawa, Yuko Kizu, Yuzo Hirayama, Rieko Fukushima, Tatsuo Saishu, Hitoshi Kobayashi
  • Publication number: 20060215260
    Abstract: A projection type screen comprises a reflection surface array and a lenticular sheet. In the reflection surface array, a plurality of reflection surfaces is located along a horizontal direction. Each reflection surface has a mirror reflectivity of which section along the horizontal direction is quadratic curve shape. The lenticular sheet is located at an incident side of a projection light for the reflection surface array. The lenticular sheet has diffusivity along a vertical direction.
    Type: Application
    Filed: February 27, 2006
    Publication date: September 28, 2006
    Inventors: Kazuki Taira, Yuzo Hirayama
  • Patent number: 7109967
    Abstract: A display input device comprises a display unit having a flexibility; and a first form change detection unit having a flexibility. The first form change detection unit is able to detect a deformation ascribed to the flexibility as a change in a electrical property. A display input system further comprises a display driving unit that supplies a display signal to the display unit and a signal judging unit that judges a input data based on the change in a electrical property in the first form change detection unit. The input of a first data can be performed by adding the deformation to the display input device.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: September 19, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tsuyoshi Hioki, Masahiko Akiyama, Kenichi Kameyama, Kazuki Taira, Isao Mihara
  • Publication number: 20060181771
    Abstract: A first polarizer transmits incident light of a first polarized direction and absorbs incident light of a polarized direction different from the first polarized direction. A birefringent film layer rotates a polarized direction of light of a predetermined wavelength to a second polarized direction different from the first polarized direction in a light transmitted through the first polarizer. A second polarizer transmits light of the first polarized direction and reflects a light of the second polarized direction in a light transmitted through the birefringent film layer. A substrate absorbs light transmitted through the second polarizer.
    Type: Application
    Filed: February 13, 2006
    Publication date: August 17, 2006
    Inventor: Kazuki Taira
  • Publication number: 20060170616
    Abstract: A 3D image reproduction apparatus including a display and an optical system is described. The display includes a screen on which a plurality of pixels are arranged to display synthesis parallax images in units of arrayed sub regions. Each of the pixels includes three sub pixels that differ in color, and the sub pixels are laid out so that adjacent sub pixels differ in color. The optical system arranged in front of the screen of the display, forms a 3D image from synthesis parallax images displayed on the screen in units of arrayed sub regions.
    Type: Application
    Filed: July 8, 2003
    Publication date: August 3, 2006
    Inventors: Yuzo Hirayama, Kazuki Taira, Hajime Yamaguchi, Rieko Fukushima, Hitoshi Kobayashi, Goh Itoh
  • Patent number: 7079098
    Abstract: An image display system produces a color image by arranging a color shutter capable of time-divisionally switching a plurality of colors to be displayed, in front of a monochrome image display. This image display system comprises: a self-luminous image display part for time-divisionally displaying monochrome images corresponding to three primary colors; and a color display part for time-divisionally coloring and outputting the monochrome images which formed on the side of the light outgoing surface of the self-luminous image display part and which correspond to the three primary colors.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: July 18, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuki Taira, Tatsuo Saishu, Kouhei Suzuki, Hirotaka Murata, Takashi Nishimura, Masaaki Tamatani
  • Publication number: 20060066718
    Abstract: An apparatus for generating a parallax image to be used for a display of a three-dimensional image on a three-dimensional integral imaging display includes an image signal acquiring unit, an image signal assigning unit, and a parallax image generator. The image signal acquiring unit acquires a plurality of image signals by picking up an image of an image object from a plurality of different parallax directions. The image signal assigning unit assigns an output order of the plurality of image signal so that the plurality of image signals are arranged in a reverse parallax direction order to an order of beam directions of the three-dimensional integral imaging display. The parallax image generator generates a parallax image from the plurality of image signals to which an output order is assigned by the image signal assigning unit.
    Type: Application
    Filed: March 23, 2005
    Publication date: March 30, 2006
    Inventors: Shingo Yanagawa, Yasunobu Yamauchi, Kazuki Taira, Rieko Fukushima, Tatsuo Saishu, Yuzo Hirayama
  • Publication number: 20050270366
    Abstract: The present invention makes it possible to rapidly obtain a two-dimensional image which is not discontinuous and does not include distortion from three-dimensional image display data. When a two-dimensional image is displayed, a viewing point within a viewing zone is assumed, and a parallax image displayed on pixels positioned at a position where a line connecting the viewing point and an exit pupil, and the display unit cross each other or positioned in the vicinity thereof in a state that a three-dimensional image is displayed is developed and displayed within a corresponding elemental image including the pixels.
    Type: Application
    Filed: March 2, 2005
    Publication date: December 8, 2005
    Inventors: Rieko Fukushima, Hitoshi Kobayashi, Yuzo Hirayama, Kazuki Taira, Tatsuo Saishu, Yasunobu Yamauchi, Masahiro Sekine
  • Publication number: 20050264651
    Abstract: In a II system display apparatus, in a normal display mode, a parallax component image is divided into pieces corresponding to respective columns for a parallax interleaved image. The component image is obtained by subjecting a subject to perspective projection in a vertical direction and to orthographic projection in a horizontal direction. In a compressed and emphasized display mode, the component image is divided into pieces corresponding to respective columns. The component image is obtained by subjecting the subject to perspective projection in both vertical and horizontal directions. In a multiview compatible mode, the component image is divided into pieces corresponding to respective columns so that the same piece is provided for a plurality of adjacent columns. The component image is obtained by subjecting the subject to perspective projection in both vertical and horizontal directions.
    Type: Application
    Filed: May 20, 2005
    Publication date: December 1, 2005
    Inventors: Tatsuo Saishu, Yuzo Hirayama, Kazuki Taira, Rieko Fukushima
  • Publication number: 20050264881
    Abstract: A three-dimensional display apparatus is provided with an optical element including optical apertures arranged opposite a display module and in association with the parallax images. The optical apertures cause the parallax images to be displayed in a near-side region closer to an observer, while causing a three-dimensional image to be displayed in a far-side region located opposite the observer with respect to the display module. When a smooth three-dimensional image is to be displayed in the near-side region, the optical gap between the optical element and the display surface is set longer than a reference distance depending on the position of the three-dimensional image. In order to display a smooth three-dimensional image in the far-side region, the observer sets the optical gap shorter than the reference distance depending on the position of the three-dimensional image.
    Type: Application
    Filed: May 24, 2005
    Publication date: December 1, 2005
    Inventors: Ayako Takagi, Tatsuo Saishu, Kazuki Taira, Yuzo Hirayama
  • Patent number: 6970148
    Abstract: An image display method including dividing an original image for one frame period into a plurality of subfield images, arranging the subfield images in a direction of a time axis in an order of brightness of the subfield images, and displaying the arranged subfield images in the order of the brightness.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: November 29, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Goh Itoh, Masahiro Baba, Kazuki Taira, Haruhiko Okumura
  • Publication number: 20050259323
    Abstract: It is possible to provide a three-dimensional image display device which can improved a final resolution balance and can prevent display blocking. A three-dimensional image display device includes: a two-dimensional image display device where pixels constituting a pixel group displaying an elemental image are arranged in a matrix shape; and an optical plate which has exit pupils corresponding to the pixel group and controls light rays from the pixels of the pixel group, wherein the exit pupils in the optical plate are constituted so as to be continued in an approximately vertical direction, and an angle formed between a direction in which the exist pupils are continued and a column direction of a pixel arrangement in the two-dimensional image display device is given by arc tan (1/n) when n is a natural number which is different from multiples of 3.
    Type: Application
    Filed: February 9, 2005
    Publication date: November 24, 2005
    Inventors: Rieko Fukushima, Tatsuo Saishu, Kazuki Taira, Yuzo Hirayama
  • Publication number: 20050195478
    Abstract: An apparatus includes a stereoscopic display region calculator calculating a stereoscopic display region to reproduce a three-dimensional positional relationship in image data displayed on a stereoscopic display device, based on two-dimensional or three-dimensional image data, a position of a target of regard of a virtual camera set in processing of rendering the image data, and orientations of the light beams output from the stereoscopic display device. The apparatus also includes an image processor performing image processing on image data outside a region representing the outside of the stereoscopic display region calculated by the stereoscopic display region calculator. The image processing is different from image processing on image data inside a region representing the inside of the stereoscopic display region. The apparatus also includes an image generator generating stereoscopic display image data from the two-dimensional or three-dimensional image data after processed by the image processor.
    Type: Application
    Filed: February 28, 2005
    Publication date: September 8, 2005
    Inventors: Shingo Yanagawa, Yasunobu Yamauchi, Kazuki Taira, Rieko Fukushima, Yuzo Hirayama
  • Publication number: 20050156843
    Abstract: An image display method including dividing an original image for one frame period into a plurality of subfield images, arranging the subfield images in a direction of a time axis in an order of brightness of the subfield images, and displaying the arranged subfield images in the order of the brightness.
    Type: Application
    Filed: February 17, 2005
    Publication date: July 21, 2005
    Inventors: Goh Itoh, Masahiro Baba, Kazuki Taira, Haruhiko Okumura
  • Publication number: 20050146492
    Abstract: There is provided a field-sequential color displaying method capable of reducing color breakup with respect to an optional image without greatly increasing a sub-field frequency. The field-sequential color display method includes; time-sequentially displaying of luminous information of an input image information with every display color and changing the display color in synchronism with the displaying of the luminous information in order to display the input image information, wherein one frame period in which one color image is displayed includes at least four sub-field periods in which information of each color is displayed, and a picture signal displayed in at least one sub-field period is a non-three-primary color picture signal which is generated from at least two primary color signals of input picture signals including three-primary color signals.
    Type: Application
    Filed: February 14, 2005
    Publication date: July 7, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro Baba, Kazuki Taira, Haruhiko Okumura
  • Patent number: 6911963
    Abstract: There is provided a field-sequential color displaying method capable of reducing color breakup with respect to an optional image without greatly increasing a sub-field frequency. The field-sequential color display method includes; time-sequentially displaying of luminous information of an input image information with every display color and changing the display color in synchronism with the displaying of the luminous information in order to display the input image information, wherein one frame period in which one color image is displayed includes at least four sub-field periods in which information of each color is displayed, and a picture signal displayed in at least one sub-field period is a non-three-primary color picture signal which is generated from at least two primary color signals of input picture signals including three-primary color signals.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: June 28, 2005
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Baba, Kazuki Taira, Haruhiko Okumura
  • Publication number: 20050105179
    Abstract: A stereoscopic image producing method can produce a stereoscopic image efficiently. The stereoscopic image producing method includes inputting a plurality of parallax images with pixel data including information pieces about the three primary colors, which are produced from different viewpoints, and, based upon information about arrangement of color pixel dots constituting a pixel of a display screen which displays a two-dimensional image thereon, composing some pieces of the three primary color information pieces in each of the parallax images and allocating the three primary color information pieces for different ones of the parallax images to the color pixel dots adjacent to each other in a screen horizontal direction on the display screen, where a stereoscopic image including a plurality of different parallax image information pieces in a horizontal direction in a space in which the stereoscopic image is displayed is produced.
    Type: Application
    Filed: September 29, 2004
    Publication date: May 19, 2005
    Inventors: Kazuki Taira, Yuzo Hirayama, Tatsuo Saishu, Rieko Fukushima, Yasunobu Yamauchi, Shingo Yanagawa
  • Publication number: 20050099689
    Abstract: A three-dimensional image display device includes a display unit having pixels arranged in a form of a matrix, the pixels forming pixel groups configured to display element images, and a mask having windows corresponding to the pixel groups. Preferably, relative positions of the pixel groups to the windows change cyclically.
    Type: Application
    Filed: September 17, 2004
    Publication date: May 12, 2005
    Inventors: Reiko Fukushima, Tatsuo Saishu, Kazuki Taira, Yuzo Hirayama
  • Publication number: 20050083246
    Abstract: It is made possible to satisfy such a condition that moire or color moire is suppressed and a fast image processing is made easy and such a condition that sufficient image quality can be obtained both at a flat image display time and at a stereoscopic image display time simultaneously. A vertical period of pixel rows having the pixels arranged in one row in a lateral direction is three times a lateral period of the pixels, the pixels developing red, green and blue are alternately arranged in a lateral direction in the same row, the pixels in one row of two rows adjacent in a vertical direction are arranged such that lateral positions thereof are shifted to the pixels in the other row by ½ of the lateral period of the pixels, the pixels in rows adjacent in the same column through one row interposed therebetween are the pixels developing different colors of red, green and blue, and a pitch of the elemental images is equal to a width of 18n (n=1, 2, 3 . . .
    Type: Application
    Filed: September 8, 2004
    Publication date: April 21, 2005
    Inventors: Tatsuo Saishu, Rieko Fukushima, Kazuki Taira, Yuzo Hirayama
  • Publication number: 20050083400
    Abstract: A three-dimensional image display device includes a display portion having pixels arranged in the form of a matrix in a planar display surface to have fixed horizontal and vertical pitches, a light ray control portion having first optical apertures arranged in front of the display portion to have a first pitch in a horizontal direction which limit light rays in the horizontal direction and second optical apertures to have a second pitch in a vertical direction which converge the light rays at a certain view distance, and a display drive portion which gives element images generated based on parallel projected images to pixel groups along the horizontal direction and gives image segments obtained by interleaving perspective projected images in the vertical direction. Preferably, the first pitch is equal to an integer multiple of the horizontal pitch of the pixels, and the second pitch is smaller than the vertical pitch.
    Type: Application
    Filed: September 3, 2004
    Publication date: April 21, 2005
    Inventors: Yuzo Hirayama, Rieko Fukushima, Tatsuo Saishu, Kazuki Taira