Patents by Inventor Koichi Fukuda

Koichi Fukuda 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: 10063764
    Abstract: A control apparatus (121) includes a generation unit (121a) for generating first and second focus detection signals based on a plurality of types of color signals from first and second pixel groups that receive light beams passing through partial pupil regions different from each other, and a calculation unit (121b) for calculating a defocus amount by a phase difference detection method by using the first and second focus detection signals, and the generation unit combines the color signals with respect to the first pixel group so that centroids of the color signals in a pupil division direction coincide with each other to generate the first focus detection signal, and combines the color signals with respect to the second pixel group so that centroids of the color signals in the pupil division direction coincide with each other to generate the second focus detection signal.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: August 28, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koichi Fukuda
  • Publication number: 20180213161
    Abstract: An image processing apparatus includes: a memory configured to acquire a plurality of visual point images; a visual point change processing unit configured to perform image processing on image data based on the plurality of visual point images to generate a combination image; an area designation unit configured to designate an area subjected to the image processing using the visual point change processing unit; and an adjustment unit configured to set an adjustable range of the image processing for each area designated by the area designation unit.
    Type: Application
    Filed: January 24, 2018
    Publication date: July 26, 2018
    Inventors: Akihiko Kanda, Koichi Fukuda, Yuki Yoshimura
  • Patent number: 10025061
    Abstract: Light quantity information of an imaging optical system is acquired according to a focus detection position in an imaging screen. Conversion is performed from the light quantity information and a first aperture value of the imaging optical system, so that the first aperture value is converted into a second aperture value according to the focus detection position. A conversion coefficient is set according to the second aperture value and an exit pupil distance. A correction value to correct output signals from an imaging unit is obtained according to the second aperture value and an exit pupil distance.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: July 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Fukuda, Yuki Yoshimura
  • Patent number: 10021328
    Abstract: The imaging device includes a first pixel group and a second pixel group that include a plurality of pixels each having a plurality of photoelectric conversion portions that are separated by an isolation portion and arranged in a first direction and a plurality of transfer gates that transfer charges of the plurality of photoelectric conversion portions. A position of at least a part of the isolation portion within each of the pixels of the first pixel group and a position of at least a part of the isolation portion within each of the pixels of the second pixel group are shifted relative to each other in the first direction. Respective widths of portions where the plurality of separated photoelectric conversion portions overlap with the plurality of transfer gates in a planar view are the same.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: July 10, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshiaki Takada, Masaaki Iwane, Shoji Kono, Koichi Fukuda, Junichi Saito, Yumi Takao
  • Patent number: 10015390
    Abstract: An image capturing apparatus in which a plurality of pixels each having a plurality of photoelectric conversion units for receiving light fluxes that have passed through different partial pupil regions of an imaging optical system are arrayed, wherein an entrance pupil distance Zs of the image sensor with respect to a minimum exit pupil distance Lmin of the imaging optical system and the maximum exit pupil distance Lmax of the imaging optical system satisfies a condition of 4 ? L min ? L max L min + 3 ? L max < Z S < 4 ? L min ? L max 3 ? L min + L max .
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: July 3, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Fukuda
  • Publication number: 20180183984
    Abstract: An image processing method including generating a captured image corresponding to a pupil region from an input image acquired by an image sensor in which a plurality of pixels each having a plurality of photoelectric conversion parts for receiving light fluxes passing through the different pupil partial regions of an image-forming optical system is arrayed, generating, from the input image, viewpoint images at each of the different pupil partial regions, generating corrected viewpoint images by executing light amount correction processing of each of the viewpoint images based on the captured image and the viewpoint images, executing gamma adjustment of the captured image and gamma adjustment of the corrected viewpoint images based on a signal luminance distribution of the captured image and signal luminance distributions of the corrected viewpoint images, and combining the captured image and the corrected viewpoint images according to subject luminance.
    Type: Application
    Filed: December 20, 2017
    Publication date: June 28, 2018
    Inventor: Koichi Fukuda
  • Patent number: 10009533
    Abstract: An image pickup apparatus for simultaneously realizing a phase difference AF and a contrast AF decides a shift amount of an image signal corresponding to a focus evaluation position every exit pupil area, generates an image corresponding to an image plane position by executing an arithmetic operation processing based on the decided shift amount to the image signal, calculates an evaluation value of a contrast of the generated image, and calculates an evaluation value of a correlation between the images corresponding to the different exit pupil areas in the generated image.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: June 26, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masafumi Kimura, Koichi Fukuda
  • Publication number: 20180148646
    Abstract: The present invention provides a soil erosion prevention agent which is excellent in the freeze-thaw stability while maintaining the soil erosion prevention effect. When a toluene-insoluble matter of the water-borne resin emulsion is 60 mass % or more and a content of the water-soluble polymer in the soil erosion prevention agent is 1 to 7 mass %, preferably 3 to 5 mass %, the soil erosion prevention agent excellent in the freeze-thaw stability is provided and suitable for greening and a spraying material. The water-borne resin emulsion is preferably a resin containing a structural unit derived from vinyl acetate, or an ethylene-vinyl acetate copolymer emulsion.
    Type: Application
    Filed: June 17, 2016
    Publication date: May 31, 2018
    Applicant: Denka Company Limited
    Inventors: Koichi FUKUDA, Hironori KONISHI, Kazuhiro KOTE
  • Publication number: 20180047768
    Abstract: An image sensor includes a plurality of pixels. At least a pixel of the plurality of pixels includes a plurality of photoelectric converters arranged in a semiconductor substrate and a light waveguide provided for the plurality of photoelectric converters. The light waveguide includes a main waveguide surrounded by an insulation film so as to pass light entering the plurality of photoelectric converters, and a plurality of sub waveguides each arranged between the main waveguide and a corresponding photoelectric converter of the plurality of photoelectric converters. The plurality of sub waveguides are separated from each other by a separator including an electrically conductive member.
    Type: Application
    Filed: August 4, 2017
    Publication date: February 15, 2018
    Inventors: Sho Suzuki, Hideomi Kumano, Koki Takami, Koichi Fukuda, Kohei Okamoto, Tomoyuki Tezuka
  • Publication number: 20180041744
    Abstract: An image processing apparatus includes an acquisition unit which acquires a parallax image generated based on a signal of a photoelectric converter among a plurality of photoelectric converters which receive light beams passing through partial pupil regions of an imaging optical system different from each other, and acquires a captured image generated by combining signals of the plurality of photoelectric converters, and an image processing unit which performs correction process so as to reduce a defect included in the parallax image based on the captured image.
    Type: Application
    Filed: October 4, 2017
    Publication date: February 8, 2018
    Inventor: Koichi Fukuda
  • Publication number: 20180040565
    Abstract: According to one embodiment, the insulating layer is provided on the terrace portions. The plurality of contact portions extend through the insulating layer in the stacking direction and contact the terrace portions. The second columnar portion extends through the insulating layer and through the second stacked portion in the stacking direction, and includes a second semiconductor body contacting the first semiconductor region. The first insulating portion divides the first semiconductor region in the first direction. The first insulating portion is provided under a boundary portion between the first stacked portion and the second stacked portion.
    Type: Application
    Filed: August 3, 2017
    Publication date: February 8, 2018
    Applicant: Toshiba Memory Corporation
    Inventors: Masatoshi WATARAI, Masanori HATAKEYAMA, Takuya KUSAKA, Kazunori MASUDA, Masato ENDO, Koichi FUKUDA, Masato SUGAWARA
  • Publication number: 20180035041
    Abstract: Provided is an image pickup apparatus including pixels each divided into subpixels that receive respective rays of a pencil having passed through different pupil subregions in an optical system, the apparatus having a viewpoint image generation unit that generates viewpoint images based on pixel signals outputted by the subpixels, an image deviation amount calculation unit that calculates an image deviation amount from the viewpoint images, a conversion factor calculation unit that calculates a conversion factor for use in conversion of the image deviation amount into a defocus amount, and a recording unit that records at least two of the conversion factor, the image deviation amount, and the defocus amount in a storage medium as metadata in association with the viewpoint images or an image obtained from the viewpoint images.
    Type: Application
    Filed: July 25, 2017
    Publication date: February 1, 2018
    Inventors: Yuki Yoshimura, Koichi Fukuda, Akihiko Kanda
  • Publication number: 20180013951
    Abstract: An image processing apparatus (image processing circuit 125) includes a determiner (125a) that determines a weight coefficient which varies depending on a position in each of a plurality of parallax images and an image generator (125b) that synthesizes the plurality of parallax images based on the weight coefficient to generate an image.
    Type: Application
    Filed: February 10, 2016
    Publication date: January 11, 2018
    Inventor: Koichi Fukuda
  • Publication number: 20180006059
    Abstract: An electronic device includes a liquid crystal display device having a first substrate, a second substrate bonded to the first substrate, with liquid crystal material held between the first substrate and the second substrate, and an upper polarizing plate affixed to the second substrate. A protective member is disposed over the upper polarizing plate, and an adhesive member is disposed between the protective member and the upper polarizing plate without an air layer between the protective member and the upper polarizing plate. The protective member is configured as a protective cover of the electronic device.
    Type: Application
    Filed: September 12, 2017
    Publication date: January 4, 2018
    Inventor: Koichi FUKUDA
  • Publication number: 20180003923
    Abstract: One embodiment of the present invention provides an image processing method, the method comprising: acquiring a plurality of viewpoint images; generating a contrast distribution from the plurality of viewpoint images; and generating an output image by performing image processing in accordance with the contrast distribution with respect to an image based on the plurality of viewpoint images.
    Type: Application
    Filed: March 10, 2016
    Publication date: January 4, 2018
    Inventor: Koichi Fukuda
  • Publication number: 20170353680
    Abstract: An image processing apparatus comprises: an acquisition unit configured to acquire a first viewpoint image corresponding to a first partial pupil region of an exit pupil of as imaging optical system divided into a plurality of partial pupil regions in a first direction, and a captured image corresponding to the exit pupil; and a correction unit configured to correct shading of a first pixel of a first pixel group based on a first ratio of a sum of the first pixel group of the first viewpoint image arranged in a second direction orthogonal to the first direction to a sum of a pixel group of the captured image corresponding to a position of the first pixel group.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 7, 2017
    Inventor: Koichi Fukuda
  • Patent number: 9826139
    Abstract: An image processing apparatus for processing image pickup signals of subpixels of an image pickup element including a plurality of unit pixels each of which has a plurality of subpixels for receiving light passing through different partial pupil areas of a focusing optical system and generating image data of a photographed image, obtains in-focus information of the photographed image, sets a first area and a second area different from the first area onto the photographed image on the basis of the obtained in-focus information, and adds a part of the image pickup signals of the subpixels obtained from the image pickup element so that the number of image pickup signals of the subpixels per unit pixel in the image data of the photographed image corresponding to the first area is larger than that of the image data of the photographed image corresponding to the second area.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: November 21, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koichi Fukuda
  • Publication number: 20170310913
    Abstract: The imaging device includes a first pixel group and a second pixel group that include a plurality of pixels each having a plurality of photoelectric conversion portions that are separated by an isolation portion and arranged in a first direction and a plurality of transfer gates that transfer charges of the plurality of photoelectric conversion portions. A position of at least a part of the isolation portion within each of the pixels of the first pixel group and a position of at least a part of the isolation portion within each of the pixels of the second pixel group are shifted relative to each other in the first direction. Respective widths of portions where the plurality of separated photoelectric conversion portions overlap with the plurality of transfer gates in a planar view are the same.
    Type: Application
    Filed: April 14, 2017
    Publication date: October 26, 2017
    Inventors: Yoshiaki Takada, Masaaki Iwane, Shoji Kono, Koichi Fukuda, Junichi Saito, Yumi Takao
  • Publication number: 20170309028
    Abstract: An image processing apparatus inputs image data representing a plurality of images from mutually different viewpoints, estimates first information indicating a disparity between the plurality of images by comparing image regions each having a first size between the plurality of images, and identifies image regions each having a second size different from the first size, between the plurality of images, based on the first information estimated. The estimation estimates second information indicating the magnitude of a disparity between the plurality of images in the identified image regions by comparing the image regions each having the second size between the plurality of images.
    Type: Application
    Filed: September 30, 2015
    Publication date: October 26, 2017
    Applicant: CANNON KABUSHIKI KAISHA
    Inventors: Tomohiro Nishiyama, Koichi Fukuda
  • Patent number: 9794468
    Abstract: An image sensor in which pixels, each having a photoelectric conversion region divided into a plurality of regions, are arranged two-dimensionally, the image sensor comprising: a first pixel, from the pixels, for which each of photoelectric conversion regions divided in a first direction receives a light beam that passes through a pupil region; and a second pixel, from the pixels, for which each of photoelectric conversion regions divided in a second direction different to the first direction receives a light beam that passes through the pupil region; wherein the first pixel outputs signals having parallax in the first direction from the photoelectric conversion regions divided in the first direction, and the second pixel outputs signals having parallax in the second direction from the photoelectric conversion regions divided in the second direction.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 17, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Fukuda