Patents by Inventor Yoshifumi Shimodaira
Yoshifumi Shimodaira 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: 10475855Abstract: A display device (100) includes a spontaneous light emission-type display panel (10). The display device includes a plurality of pixels (P). The plurality of pixels each include a plurality of sub pixels including a red sub pixel (R), a green sub pixel (G) and a blue sub pixel (B). The display panel includes a red light emitting element (1r), a green light emitting element (1g), and a blue light emitting element (1b). Red light, green light and blue light respectively emitted by the red light emitting element, the green light emitting element and the blue light emitting element each have a spectrum half width of 10 nm or less. The plurality of sub pixels included in each pixel further include a yellow sub pixel (Ye). The display panel further includes a yellow light emitting element (1y) provided in an area corresponding to the yellow sub pixel. The yellow light emitting element emits yellow light having a dominant wavelength of 550 nm or greater and 600 nm or less.Type: GrantFiled: August 7, 2014Date of Patent: November 12, 2019Assignees: SHARP KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITYInventors: Kazunari Tomizawa, Akiko Satoh, Yoshifumi Shimodaira, Gosuke Ohashi, Yusuke Amano
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Publication number: 20160181329Abstract: A display device (100) includes a spontaneous light emission-type display panel (10). The display device includes a plurality of pixels (P). The plurality of pixels each include a plurality of sub pixels including a red sub pixel (R), a green sub pixel (G) and a blue sub pixel (B). The display panel includes a red light emitting element (1r), a green light emitting element (1g), and a blue light emitting element (1b). Red light, green light and blue light respectively emitted by the red light emitting element, the green light emitting element and the blue light emitting element each have a spectrum half width of 10 nm or less. The plurality of sub pixels included in each pixel further include a yellow sub pixel (Ye). The display panel further includes a yellow light emitting element (1y) provided in an area corresponding to the yellow sub pixel. The yellow light emitting element emits yellow light having a dominant wavelength of 550 nm or greater and 600 nm or less.Type: ApplicationFiled: August 7, 2014Publication date: June 23, 2016Applicants: SHARP KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITYInventors: Kazunari TOMIZAWA, Akiko SATOH, Yoshifumi SHIMODAIRA, Gosuke OHASHI, Yusuke AMANO
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Patent number: 9368692Abstract: An electronic color-chart device includes plural LEDs with different peak wavelengths and displays images to serve as color references as color charts by making the plural LEDs emit light. In a case where a light emission intensity distribution of each of the plural LEDs is normalized with a maximum intensity being a value of 1, the plural LEDs include plural first LEDs of which at least one is an LED whose full wavelength width at half maximum intensity is 40 nm or narrower and between which a peak interval is 50 nm or narrower and a second LED whose light emission intensity at a wavelength of 555 nm is 0.4 or higher, and whose full wavelength width at half maximum intensity is wider than 40 nm.Type: GrantFiled: September 10, 2013Date of Patent: June 14, 2016Assignees: SHARP KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITYInventors: Kazunari Tomizawa, Yoshifumi Shimodaira
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Patent number: 9311885Abstract: In an image color estimation method, a signal value SG (Rs, Gs, Bs) is calculated based on a first display property and a tone value T (S121), and an offset value Co (Ro, Go, Bo) that corresponds to the respective components (Rs, Gs, Bs) in the signal value SG is calculated based on the first display property P1, a second display property P2, and the tone value T (R, G, B) (S122). Then, a correction signal value SC (Rc, Gc, Bc) is calculated by adding the offset value Co (Ro, Go, Bo) to the signal value SG (Rs, Gs, Bs) (S123). The correction signal value SC (Rc, Gc, Bc) is converted into a correction signal value ST (Xc, Yc, Zc) using a conversion matrix M (S124).Type: GrantFiled: November 30, 2011Date of Patent: April 12, 2016Assignee: NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITYInventors: Yoshifumi Shimodaira, Katsuya Ono
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Publication number: 20150263240Abstract: An electronic color-chart device includes plural LEDs with different peak wavelengths and displays images to serve as color references as color charts by making the plural LEDs emit light. In a case where a light emission intensity distribution of each of the plural LEDs is normalized with a maximum intensity being a value of 1, the plural LEDs include plural first LEDs of which at least one is an LED whose full wavelength width at half maximum intensity is 40 nm or narrower and between which a peak interval is 50 nm or narrower and a second LED whose light emission intensity at a wavelength of 555 nm is 0.4 or higher, and whose full wavelength width at half maximum intensity is wider than 40 nm.Type: ApplicationFiled: September 10, 2013Publication date: September 17, 2015Applicant: National University Corporation Shizuoka UniversityInventors: Kazunari Tomizawa, Yoshifumi Shimodaira
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Publication number: 20130328911Abstract: In an image color estimation method, a signal value SG (Rs, Gs, Bs) is calculated based on a first display property and a tone value T (S121), and an offset value Co (Ro, Go, Bo) that corresponds to the respective components (Rs, Gs, Bs) in the signal value SG is calculated based on the first display property P1, a second display property P2, and the tone value T (R, G, B) (S122). Then, a correction signal value SC (Rc, Gc, Bc) is calculated by adding the offset value Co (Ro, Go, Bo) to the signal value SG (Rs, Gs, Bs) (S123). The correction signal value SC (Rc, Gc, Bc) is converted into a correction signal value ST (Xc, Yc, Zc) using a conversion matrix M (S124).Type: ApplicationFiled: November 30, 2011Publication date: December 12, 2013Inventors: Yoshifumi Shimodaira, Katsuya Ono
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Patent number: 8297815Abstract: A vehicle lamp including a main lamp unit that forms a main light distribution pattern for a headlamp, and an additional lamp unit that emits blue light or mixed light including blue light to form a lane marker irradiation light distribution pattern, wherein the lane marker irradiation light distribution pattern is superimposed onto the main light distribution pattern.Type: GrantFiled: December 7, 2010Date of Patent: October 30, 2012Assignee: Koito Manufacturing Co., Ltd.Inventors: Yoshifumi Shimodaira, Gosuke Ohashi, Nobukazu Ishikawa, Yuichi Shibata, Hiroyuki Serizawa
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Patent number: 8044980Abstract: There is disclosed an image display displaying a multicolor image by using image data expressing color components of a first color specification system.Type: GrantFiled: September 12, 2006Date of Patent: October 25, 2011Assignee: National University Corporation Shizuoka UniversityInventor: Yoshifumi Shimodaira
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Publication number: 20110134654Abstract: A vehicle lamp including a main lamp unit that forms a main light distribution pattern for a headlamp, and an additional lamp unit that emits blue light or mixed light including blue light to form a lane marker irradiation light distribution pattern, wherein the lane marker irradiation light distribution pattern is superimposed onto the main light distribution pattern.Type: ApplicationFiled: December 7, 2010Publication date: June 9, 2011Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Yoshifumi SHIMODAIRA, Gosuke OHASHI, Nobukazu ISHIKAWA, Yuichi SHIBATA, Hiroyuki SERIZAWA
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Publication number: 20090278862Abstract: There is disclosed an image display displaying a multicolor image by using image data expressing color components of a first color specification system.Type: ApplicationFiled: September 12, 2006Publication date: November 12, 2009Applicant: National University Corporation Shizuoka UniversityInventor: Yoshifumi Shimodaira
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Patent number: 7453610Abstract: A color display system has an image transforming device transforming an image signal (XC, YC, ZC) of a XYZ colorimetric system to an image signal of a RGB colorimetric system and outputting the image signal of the RGB colorimetric system; and a display receiving the image signal of the RGB colorimetric system which has been output from the image transforming device. The image transforming device has: a converting part; a calculation part; a determination part; and a feedback part.Type: GrantFiled: June 22, 2006Date of Patent: November 18, 2008Assignee: National University Corporation Shizuoka UniversityInventors: Yoshifumi Shimodaira, Takamori Shimazu
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Publication number: 20060268301Abstract: A color display system has an image transforming device transforming an image signal (XC, YC, ZC) of a XYZ colorimetric system to an image signal of a RGB colorimetric system and outputting the image signal of the RGB colorimetric system; and a display receiving the image signal of the RGB colorimetric system which has been output from the image transforming device. The image transforming device has: a converting part; a calculation part; a determination part; and a feedback part.Type: ApplicationFiled: June 22, 2006Publication date: November 30, 2006Inventors: Yoshifumi Shimodaira, Takamori Shimazu