Patents by Inventor Koichi Yoshizawa

Koichi Yoshizawa 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: 11627678
    Abstract: A lid structure capable of preventing a lid member from being opened due to a jet stream by using a simple structure is provided. A lid structure includes a lid member configured to cover a housing part of a housing container, and a protrusion disposed near an end of an opposing surface of the lid member, the opposing surface being located on a side of the lid member that is opposed to the housing part when the lid member covers the housing part. The protrusion is disposed in a position that is located outside the housing part when the lid member covers the housing part. The protrusion includes an inclined surface inclined from a direction perpendicular to the opposing surface toward the end of the opposing surface.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: April 11, 2023
    Assignee: JVCKENWOOD CORPORATION
    Inventors: Hiromi Taguchi, Koichi Yoshizawa, Naoki Mitsui
  • Publication number: 20220089104
    Abstract: An onboard device includes a body member, a support member projecting from the body member and including a base to be attached to a concave inner surface of a glass member having a curved shape provided in a vehicle, and a double-sided adhesive tape stuck on a the base. The base is a plate-like member including an attachment surface to be opposed to the inner surface of the glass member. The attachment surface is a curved surface having a curvature at least in a first direction along the attachment surface.
    Type: Application
    Filed: December 2, 2021
    Publication date: March 24, 2022
    Inventors: Fumiaki ONO, Koichi YOSHIZAWA, Yoichi NAKANO, Yukihiro KATSURAGI
  • Publication number: 20200267862
    Abstract: A lid structure capable of preventing a lid member from being opened due to a jet stream by using a simple structure is provided. A lid structure includes a lid member configured to cover a housing part of a housing container, and a protrusion disposed near an end of an opposing surface of the lid member, the opposing surface being located on a side of the lid member that is opposed to the housing part when the lid member covers the housing part. The protrusion is disposed in a position that is located outside the housing part when the lid member covers the housing part. The protrusion includes an inclined surface inclined from a direction perpendicular to the opposing surface toward the end of the opposing surface.
    Type: Application
    Filed: May 4, 2020
    Publication date: August 20, 2020
    Inventors: Hiromi TAGUCHI, Koichi YOSHIZAWA, Naoki MITSUI
  • Patent number: 9978315
    Abstract: An image display apparatus includes: a first light modulation device that includes a plurality of display pixels and modulates light based on input first image information; an illumination unit that includes a plurality of light adjustment elements and emits adjusted light to the first light modulation device; an illumination distribution storage unit that stores an illumination range in which the light emitted from the light adjustment elements illuminates the display pixels of the first light modulation device; and a light adjustment information decision unit that decides light adjustment information to control the light adjustment elements of the illumination unit based on a feature amount of the first image information corresponding to the display pixels of the illumination range stored in the illumination distribution storage unit.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: May 22, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Yoshizawa
  • Patent number: 9898947
    Abstract: An image display device includes: a first light modulation device including a plurality of display pixels; a lighting unit including a plurality of light adjusting elements; an illumination distribution storage unit that stores an illumination range information which represents an illumination range; a light adjusting information determination unit that determines light adjusting information for controlling the light adjusting elements of the lighting unit based on a feature quantity of the first image information corresponding to the display pixels in the illumination range; an illumination distribution detection unit that detects an illumination distribution information which represents an illumination distribution; and an illumination distribution updating unit that updates the illumination range information based on the illumination distribution information.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: February 20, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Yoshizawa
  • Patent number: 9613576
    Abstract: An image display device includes a first light modulation device including a plurality of display pixels, a lighting unit including a plurality of light adjusting elements, an illumination distribution storage unit that stores an illumination range information, a light adjusting information determination unit that determines light adjusting information for controlling the light adjusting elements of the lighting unit, and a shift information acquisition unit that acquires information of a position shift between the first light modulation device and the lighting unit. The light adjusting information determination unit modifies the illumination range based on the position shift information acquired by the shift information acquisition unit, and determines the light adjusting information based on the feature quantity of the first image information corresponding to display pixels in the modified illumination range.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 4, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Koichi Yoshizawa
  • Publication number: 20160203770
    Abstract: An image display apparatus includes: a first light modulation device that includes a plurality of display pixels and modulates light based on input first image information; an illumination unit that includes a plurality of light adjustment elements and emits adjusted light to the first light modulation device; an illumination distribution storage unit that stores an illumination range in which the light emitted from the light adjustment elements illuminates the display pixels of the first light modulation device; and a light adjustment information decision unit that decides light adjustment information to control the light adjustment elements of the illumination unit based on a feature amount of the first image information corresponding to the display pixels of the illumination range stored in the illumination distribution storage unit.
    Type: Application
    Filed: September 8, 2014
    Publication date: July 14, 2016
    Applicant: Seiko Epson Corporation
    Inventor: Koichi YOSHIZAWA
  • Publication number: 20150187242
    Abstract: An image display device includes a first light modulation device including a plurality of display pixels, a lighting unit including a plurality of light adjusting elements, an illumination distribution storage unit that stores an illumination range information, a light adjusting information determination unit that determines light adjusting information for controlling the light adjusting elements of the lighting unit, and a shift information acquisition unit that acquires information of a position shift between the first light modulation device and the lighting unit. The light adjusting information determination unit modifies the illumination range based on the position shift information acquired by the shift information acquisition unit, and determines the light adjusting information based on the feature quantity of the first image information corresponding to display pixels in the modified illumination range.
    Type: Application
    Filed: December 18, 2014
    Publication date: July 2, 2015
    Inventor: Koichi YOSHIZAWA
  • Publication number: 20150187246
    Abstract: An image display device includes: a first light modulation device including a plurality of display pixels; a lighting unit including a plurality of light adjusting elements; an illumination distribution storage unit that stores an illumination range information which represents an illumination range; a light adjusting information determination unit that determines light adjusting information for controlling the light adjusting elements of the lighting unit based on a feature quantity of the first image information corresponding to the display pixels in the illumination range; an illumination distribution detection unit that detects an illumination distribution information which represents an illumination distribution; and an illumination distribution updating unit that updates the illumination range information based on the illumination distribution information.
    Type: Application
    Filed: December 18, 2014
    Publication date: July 2, 2015
    Inventor: Koichi YOSHIZAWA
  • Patent number: 8439505
    Abstract: A method for calculating a position adjustment amount of projected image includes a first image step of obtaining first image data which is obtained by an image capturing device imaging first feature points which are displayed using light modulated by a first light modulation device, a second imaging step of obtaining second image data which is obtained by the image capturing device imaging a second feature point which is displayed using light modulated by a second light modulation device, an adjustment amount calculation step of calculating an adjustment amount based on the first image data and the second image data.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: May 14, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Koichi Yoshizawa
  • Patent number: 8427697
    Abstract: An ink set that includes a plurality of chromatic primary color inks that can reproduce achromatic color in combination with each other and at least one spot color ink having a hue different from any of the chromatic primary color inks is prepared. A color to be reproduced on a printing medium in accordance with a given input color is termed a reproduction color, and a combination of ink amounts for inks in the ink set to be used to reproduce the reproduction color on the printing medium is termed a color separation ink amount set. When a saturation parameter value that is correlated with the saturation of the reproduction color falls within a first range that is close to achromaticity, the ink amount of the spot color ink included in the color separation ink amount set is adjusted such that it decreases in accordance with a change in the saturation parameter value in the direction of lower saturation.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Yuko Yamamoto, Koichi Yoshizawa
  • Publication number: 20110292352
    Abstract: A method for calculating a position adjustment amount of projected image includes a first image step of obtaining first image data which is obtained by an image capturing device imaging first feature points which are displayed using light modulated by a first light modulation device, a second imaging step of obtaining second image data which is obtained by the image capturing device imaging a second feature point which is displayed using light modulated by a second light modulation device, an adjustment amount calculation step of calculating an adjustment amount based on the first image data and the second image data.
    Type: Application
    Filed: May 24, 2011
    Publication date: December 1, 2011
    Applicant: Seiko Epson Corporation
    Inventor: Koichi Yoshizawa
  • Patent number: 8066386
    Abstract: A display position control device for projection image which controls a display position of a projection image displayed on a projection surface includes: a display position adjustment control unit which divides display position shift amount from a display target position of the projection image on the projection surface into a value an integer number times larger than a pixel pitch of the projection image and a value smaller than the pixel pitch; a display position control processing unit which performs display position control through image processing based on the value the integer number times larger than the pixel pitch; and a display position control mechanism which performs optical display position control based on the value smaller than the pixel pitch.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: November 29, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Koichi Yoshizawa
  • Publication number: 20100284030
    Abstract: There is provided a color conversion table having a plurality of pieces of reference color image data making correspondence between color data for a first image device and color data for a second image device and including a specified total information amount. The color conversion table is used to distribute the reference color image data over a prescribed area in a specified color space. Color data information for each reference color image data is increased more than a specified amount within a limit of the specified total information amount. Further, a color conversion table is created using an original table which highly accurately defines colors in part of the table. If such color conversion tables are referenced for color conversion, it is possible to suppress the storage capacity, provide color matching, and perform high accuracy color conversion.
    Type: Application
    Filed: March 22, 2010
    Publication date: November 11, 2010
    Inventors: Seishin Yoshida, Yukimitsu Fujimori, Toshiaki Kakutani, Koichi Yoshizawa
  • Patent number: 7715042
    Abstract: Utilizing an ink set that includes a plurality of chromatic primary color inks that, when used in combination, can reproduce achromatic color, and at least one spot color ink of hue different from any of the plurality of chromatic primary color inks. Color to be reproduced on a print medium according to any one input color is termed “reproduction color”, and the combination of ink quantities in the ink set for reproducing the reproduction color on the print medium is termed the “color separation ink quantity set.” The ink quantity of the spot color ink included in the color separation ink quantity set is adjusted in accordance with a lightness parameter value which is correlated to lightness of reproduction color, so as to reduce ink quantity at a rate of change greater than the rate of change of the lightness parameter in the direction of increasing brightness.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: May 11, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Koichi Yoshizawa, Yuko Yamamoto
  • Patent number: 7706036
    Abstract: A one-dimensional LUT has been incapable of color matching. A three-dimensional LUT has been incapable of ensuring a color conversion accuracy enough to reproduce fine changes in color tone on a monochrome image. It has been impossible to suppress a storage capacity for a color conversion table by ensuring the accuracy. There is provided a color conversion table which has a plurality of pieces of reference color image data making correspondence between color data for a first image device and color data for a second image device and comprises a specified total information amount. The color conversion table is used to distribute the reference color image data over a prescribed area in a specified color space. Color data information for each reference color image data is increased more than a specified amount within a limit of the specified total information amount. Further, a color conversion table is created using an original table which highly accurately defines colors in part of the color conversion table.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: April 27, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Seishin Yoshida, Yukimitsu Fujimori, Toshiaki Kakutani, Koichi Yoshizawa
  • Publication number: 20090185208
    Abstract: Utilizing an ink set that includes a plurality of chromatic primary color inks that, when used in combination, can reproduce achromatic color, and at least one spot color ink of hue different from any of the plurality of chromatic primary color inks. Color to be reproduced on a print medium according to any one input color is termed “reproduction color”, and the combination of ink quantities in the ink set for reproducing the reproduction color on the print medium is termed the “color separation ink quantity set.” The ink quantity of the spot color ink included in the color separation ink quantity set is adjusted in accordance with a lightness parameter value which is correlated to lightness of reproduction color, so as to reduce ink quantity at a rate of change greater than the rate of change of the lightness parameter in the direction of increasing brightness.
    Type: Application
    Filed: March 16, 2009
    Publication date: July 23, 2009
    Inventors: Koichi Yoshizawa, Yuko Yamamoto
  • Publication number: 20090141255
    Abstract: A display position control device for projection image which controls a display position of a projection image displayed on a projection surface includes: a display position adjustment control unit which divides display position shift amount from a display target position of the projection image on the projection surface into a value an integer number times larger than a pixel pitch of the projection image and a value smaller than the pixel pitch; a display position control processing unit which performs display position control through image processing based on the value the integer number times larger than the pixel pitch; and a display position control mechanism which performs optical display position control based on the value smaller than the pixel pitch.
    Type: Application
    Filed: October 15, 2008
    Publication date: June 4, 2009
    Applicant: Seiko Epson Corporation
    Inventor: Koichi YOSHIZAWA
  • Publication number: 20090086235
    Abstract: An ink set that includes a plurality of chromatic primary color inks that can reproduce achromatic color in combination with each other and at least one spot color ink having a hue different from any of the chromatic primary color inks is prepared. A color to be reproduced on a printing medium in accordance with a given input color is termed a reproduction color, and a combination of ink amounts for inks in the ink set to be used to reproduce the reproduction color on the printing medium is termed a color separation ink amount set. When a saturation parameter value that is correlated with the saturation of the reproduction color falls within a first range that is close to achromaticity, the ink amount of the spot color ink included in the color separation ink amount set is adjusted such that it decreases in accordance with a change in the saturation parameter value in the direction of lower saturation.
    Type: Application
    Filed: November 24, 2008
    Publication date: April 2, 2009
    Inventors: Yuko Yamamoto, Koichi Yoshizawa
  • Patent number: 7466448
    Abstract: An ink set that includes a plurality of chromatic primary color inks that can reproduce achromatic color in combination with each other and at least one spot color ink having a hue different from any of the chromatic primary color inks is prepared. A color to be reproduced on a printing medium in accordance with a given input color is termed a reproduction color, and a combination of ink amounts for inks in the ink set to be used to reproduce the reproduction color on the printing medium is termed a color separation ink amount set. When a saturation parameter value that is correlated with the saturation of the reproduction color falls within a first range that is close to achromaticity, the ink amount of the spot color ink included in the color separation ink amount set is adjusted such that it decreases in accordance with a change in the saturation parameter value in the direction of lower saturation.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: December 16, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Yuko Yamamoto, Koichi Yoshizawa