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).
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Patent number: 11627678Abstract: 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: GrantFiled: May 4, 2020Date of Patent: April 11, 2023Assignee: JVCKENWOOD CORPORATIONInventors: Hiromi Taguchi, Koichi Yoshizawa, Naoki Mitsui
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Publication number: 20220089104Abstract: 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: ApplicationFiled: December 2, 2021Publication date: March 24, 2022Inventors: Fumiaki ONO, Koichi YOSHIZAWA, Yoichi NAKANO, Yukihiro KATSURAGI
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Publication number: 20200267862Abstract: 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: ApplicationFiled: May 4, 2020Publication date: August 20, 2020Inventors: Hiromi TAGUCHI, Koichi YOSHIZAWA, Naoki MITSUI
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Patent number: 9978315Abstract: 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: GrantFiled: September 8, 2014Date of Patent: May 22, 2018Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Yoshizawa
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Patent number: 9898947Abstract: 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: GrantFiled: December 18, 2014Date of Patent: February 20, 2018Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Yoshizawa
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Patent number: 9613576Abstract: 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: GrantFiled: December 18, 2014Date of Patent: April 4, 2017Assignee: SEIKO EPSON CORPORATIONInventor: Koichi Yoshizawa
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Publication number: 20160203770Abstract: 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: ApplicationFiled: September 8, 2014Publication date: July 14, 2016Applicant: Seiko Epson CorporationInventor: Koichi YOSHIZAWA
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Publication number: 20150187242Abstract: 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: ApplicationFiled: December 18, 2014Publication date: July 2, 2015Inventor: Koichi YOSHIZAWA
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Publication number: 20150187246Abstract: 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: ApplicationFiled: December 18, 2014Publication date: July 2, 2015Inventor: Koichi YOSHIZAWA
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Patent number: 8439505Abstract: 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: GrantFiled: May 24, 2011Date of Patent: May 14, 2013Assignee: Seiko Epson CorporationInventor: Koichi Yoshizawa
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Patent number: 8427697Abstract: 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: GrantFiled: November 24, 2008Date of Patent: April 23, 2013Assignee: Seiko Epson CorporationInventors: Yuko Yamamoto, Koichi Yoshizawa
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Publication number: 20110292352Abstract: 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: ApplicationFiled: May 24, 2011Publication date: December 1, 2011Applicant: Seiko Epson CorporationInventor: Koichi Yoshizawa
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Patent number: 8066386Abstract: 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: GrantFiled: October 15, 2008Date of Patent: November 29, 2011Assignee: Seiko Epson CorporationInventor: Koichi Yoshizawa
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Publication number: 20100284030Abstract: 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: ApplicationFiled: March 22, 2010Publication date: November 11, 2010Inventors: Seishin Yoshida, Yukimitsu Fujimori, Toshiaki Kakutani, Koichi Yoshizawa
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Patent number: 7715042Abstract: 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: GrantFiled: February 4, 2004Date of Patent: May 11, 2010Assignee: Seiko Epson CorporationInventors: Koichi Yoshizawa, Yuko Yamamoto
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Patent number: 7706036Abstract: 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: GrantFiled: November 12, 2002Date of Patent: April 27, 2010Assignee: Seiko Epson CorporationInventors: Seishin Yoshida, Yukimitsu Fujimori, Toshiaki Kakutani, Koichi Yoshizawa
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Publication number: 20090185208Abstract: 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: ApplicationFiled: March 16, 2009Publication date: July 23, 2009Inventors: Koichi Yoshizawa, Yuko Yamamoto
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Publication number: 20090141255Abstract: 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: ApplicationFiled: October 15, 2008Publication date: June 4, 2009Applicant: Seiko Epson CorporationInventor: Koichi YOSHIZAWA
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Publication number: 20090086235Abstract: 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: ApplicationFiled: November 24, 2008Publication date: April 2, 2009Inventors: Yuko Yamamoto, Koichi Yoshizawa
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Patent number: 7466448Abstract: 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: GrantFiled: February 25, 2004Date of Patent: December 16, 2008Assignee: Seiko Epson CorporationInventors: Yuko Yamamoto, Koichi Yoshizawa