Patents by Inventor Daisuke Tsukuda
Daisuke Tsukuda 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: 11333887Abstract: An optical device that includes a light guide plate, a first deflection means, arranged on at least one of a first surface or a second surface of the light guide plate, that deflects light incident on the light guide plate to cause the light incident on the light guide plate to be totally reflected inside the light guide plate, and a second deflection means, arranged on at least one of the first surface or the second surface of the light guide plate, that deflects the light propagated inside the light guide plate by total reflection to cause the light propagated inside the light guide plate by total reflection to be emitted from the light guide plate. The light guide plate further includes a substrate including a first surface and a second surface facing the first surface, a first planarizing film, formed on the first surface of the substrate, containing an organic material, and a second planarizing film, formed on the second surface of the substrate, containing an organic material.Type: GrantFiled: December 13, 2017Date of Patent: May 17, 2022Assignee: SONY CORPORATIONInventors: Nobuhiro Suzuki, Daisuke Tsukuda
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Patent number: 11073693Abstract: In some embodiments, a head mounted display is provided, comprising a light guide, at least first and second diffraction gratings, alignment marks A1 and B1 associated with the first diffraction grating, and alignment marks A2 and B2 associated with the second diffraction grating. The first diffraction grating may be disposed on a first surface of the light guide, the first surface facing away from a light input. The second diffraction grating may be disposed on a second surface of the light guide, the second surface facing towards the light input. The second diffraction grating may be adapted to diffract at least some of the light input into the light guide, and the first diffraction grating may be adapted to diffract at least some light transmitted through the light guide back into the light guide.Type: GrantFiled: March 6, 2015Date of Patent: July 27, 2021Assignee: Sony CorporationInventors: Katsuyuki Akutsu, Hideo Nagasaka, Yusuke Kajio, Takashi Mizusawa, Daisuke Tsukuda, Kazutatsu Tokuyama
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Publication number: 20190331921Abstract: An optical device includes: a light guide plate 120; a first deflection means 130 arranged on at least one of a first surface or a second surface of the light guide plate 120, the first deflection means 130 deflecting light incident on the light guide plate 120 to cause the light incident on the light guide plate 120 to be totally reflected inside the light guide plate 120; and a second deflection mean 140 arranged on at least one of the first surface or the second surface of the light guide plate 120, the second deflection means 140 deflecting the light propagated inside the light guide plate 120 by total reflection to cause the light propagated inside the light guide plate 120 by total reflection to be emitted from the light guide plate 120, in which the light guide plate 120 includes: a substrate 500 including a first surface and a second surface facing the first surface; a first planarizing film 511 formed on the first surface of the substrate 500, the first planarizing film 511 containing an organic mateType: ApplicationFiled: December 13, 2017Publication date: October 31, 2019Inventors: NOBUHIRO SUZUKI, DAISUKE TSUKUDA
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Patent number: 9513477Abstract: Provided is a vehicular heads-up display device with which it is possible to avoid burn-in of an internal component upon a reflecting member by exterior light, improving display quality. A vehicular heads-up display device, comprising a case body (50) whereon an aperture part (51c) is disposed and a light-emitting body (30) that is housed within the case body (50) reflects emitted light L that is emitted by the light-emitting body (30) externally to the case body (50) via the aperture part (51c) and reflects said emitted light L from the windshield (13), causing the driver (14) to have sight of the virtual image V that is obtained by said reflection. The vehicular heads-up display device further comprises a semi-transmissible cover (55) installed in the aperture part (51c), and a dispersal means (58) is disposed between the light emitting body (30) and the cover (55), for dispersing exterior light that enters the case body (50) via the cover (55).Type: GrantFiled: July 19, 2011Date of Patent: December 6, 2016Assignee: NIPPON SEIKI CO., LTD.Inventors: Genichiro Sato, Masatoshi Azuma, Daisuke Tsukuda, Masao Itagaki
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Publication number: 20150260994Abstract: In some embodiments, a head mounted display is provided, comprising a light guide, at least first and second diffraction gratings, alignment marks A1 and B1 associated with the first diffraction grating, and alignment marks A2 and B2 associated with the second diffraction grating. The first diffraction grating may be disposed on a first surface of the light guide, the first surface facing away from a light input. The second diffraction grating may be disposed on a second surface of the light guide, the second surface facing towards the light input. The second diffraction grating may be adapted to diffract at least some of the light input into the light guide, and the first diffraction grating may be adapted to diffract at least some light transmitted through the light guide back into the light guide.Type: ApplicationFiled: March 6, 2015Publication date: September 17, 2015Applicant: Sony CorporationInventors: Katsuyuki Akutsu, Hideo Nagasaka, Yusuke Kajio, Takashi Mizusawa, Daisuke Tsukuda, Kazutatsu Tokuyama
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Publication number: 20130135748Abstract: Provided is a vehicular heads-up display device with which it is possible to avoid burn-in of an internal component upon a reflecting member by exterior light, improving display quality. A vehicular heads-up display device, comprising a case body (50) whereon an aperture part (51c) is disposed and a light-emitting body (30) that is housed within the case body (50) reflects emitted light L that is emitted by the light-emitting body (30) externally to the case body (50) via the aperture part (51c) and reflects said emitted light L from the windshield (13), causing the driver (14) to have sight of the virtual image V that is obtained by said reflection. The vehicular heads-up display device further comprises a semi-transmissible cover (55) installed in the aperture part (51c), and a dispersal means (58) is disposed between the light emitting body (30) and the cover (55), for dispersing exterior light that enters the case body (50) via the cover (55).Type: ApplicationFiled: July 19, 2011Publication date: May 30, 2013Applicant: NIPPON SEIKI CO., LTD.Inventors: Genichiro Sato, Masatoshi Azuma, Daisuke Tsukuda, Masao Itagaki
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Patent number: 8127191Abstract: A semiconductor integrated circuit includes a self-test circuit, wherein, when a operation mode of the self-test circuit has been switched from a low-speed operation mode to a high-speed operation mode, processing is performed in the high-speed operation mode during a given time period, and the processing result is invalidated based on a control signal.Type: GrantFiled: December 21, 2009Date of Patent: February 28, 2012Assignee: Fujitsu Semiconductor LimitedInventors: Takashi Maki, Daisuke Tsukuda, Tetsuya Hiramatsu
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Publication number: 20100218057Abstract: A semiconductor integrated circuit includes a self-test circuit, wherein, when a operation mode of the self-test circuit has been switched from a low-speed operation mode to a high-speed operation mode, processing is performed in the high-speed operation mode during a given time period, and the processing result is invalidated based on a control signal.Type: ApplicationFiled: December 21, 2009Publication date: August 26, 2010Applicant: FUJITSU MICROELECTRONICS LIMITEDInventors: Takashi MAKI, Daisuke Tsukuda, Tetsuya Hiramatsu
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Patent number: 7315997Abstract: A design support apparatus includes a unit that inputs a user net list created by using hard macro cells excluding test circuits, and a unit that arranges hard macro cells using a frame into which hard macro cells, where timing-converged physical information includes test terminals, and test circuits are embedded as arrangement/wiring information. Moreover, includes a unit that arranges and wires the test circuits using the arrangement/wiring information of the test circuit embedded into the frame, a unit that recognizes arrangement/wiring information where the arrangement/wiring information of the test circuits is removed from arrangement/wiring information obtained by wiring, and a unit outputs a net list of a logic structure.Type: GrantFiled: May 17, 2004Date of Patent: January 1, 2008Assignee: Fujitsu LimitedInventors: Hitoshi Watanabe, Hideaki Konishi, Yuko Katoh, Kazuyuki Yamamura, Naoko Karasawa, Takeshi Doi, Osamu Ōkano, Junko Kumagai, Koichi Itaya, Daisuke Tsukuda, Ryuji Shimizu, Toshihito Shimizu
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Publication number: 20050172254Abstract: A design support apparatus includes a unit that inputs a user net list created by using hard macro cells excluding test circuits, and a unit that arranges hard macro cells using a frame into which hard macro cells, where timing-converged physical information includes test terminals, and test circuits are embedded as arrangement/wiring information. Moreover, includes a unit that arranges and wires the test circuits using the arrangement/wiring information of the test circuit embedded into the frame, a unit that recognizes arrangement/wiring information where the arrangement/wiring information of the test circuits is removed from arrangement/wiring information obtained by wiring, and a unit outputs a net list of a logic structure.Type: ApplicationFiled: May 17, 2004Publication date: August 4, 2005Applicant: FUJITSU LIMITEDInventors: Hitoshi Watanabe, Hideaki Konishi, Yuko Katoh, Kazuyuki Yamamura, Naoko Karasawa, Takeshi Doi, Osamu Okano, Junko Kumagai, Koichi Itaya, Daisuke Tsukuda, Ryuji Shimizu, Toshihito Shimizu