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).

  • Patent number: 11333887
    Abstract: 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: Grant
    Filed: December 13, 2017
    Date of Patent: May 17, 2022
    Assignee: SONY CORPORATION
    Inventors: Nobuhiro Suzuki, Daisuke Tsukuda
  • Patent number: 11073693
    Abstract: 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: Grant
    Filed: March 6, 2015
    Date of Patent: July 27, 2021
    Assignee: Sony Corporation
    Inventors: Katsuyuki Akutsu, Hideo Nagasaka, Yusuke Kajio, Takashi Mizusawa, Daisuke Tsukuda, Kazutatsu Tokuyama
  • Publication number: 20190331921
    Abstract: 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 mate
    Type: Application
    Filed: December 13, 2017
    Publication date: October 31, 2019
    Inventors: NOBUHIRO SUZUKI, DAISUKE TSUKUDA
  • Patent number: 9513477
    Abstract: 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: Grant
    Filed: July 19, 2011
    Date of Patent: December 6, 2016
    Assignee: NIPPON SEIKI CO., LTD.
    Inventors: Genichiro Sato, Masatoshi Azuma, Daisuke Tsukuda, Masao Itagaki
  • Publication number: 20150260994
    Abstract: 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: Application
    Filed: March 6, 2015
    Publication date: September 17, 2015
    Applicant: Sony Corporation
    Inventors: Katsuyuki Akutsu, Hideo Nagasaka, Yusuke Kajio, Takashi Mizusawa, Daisuke Tsukuda, Kazutatsu Tokuyama
  • Publication number: 20130135748
    Abstract: 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: Application
    Filed: July 19, 2011
    Publication date: May 30, 2013
    Applicant: NIPPON SEIKI CO., LTD.
    Inventors: Genichiro Sato, Masatoshi Azuma, Daisuke Tsukuda, Masao Itagaki
  • Patent number: 8127191
    Abstract: 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: Grant
    Filed: December 21, 2009
    Date of Patent: February 28, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Takashi Maki, Daisuke Tsukuda, Tetsuya Hiramatsu
  • Publication number: 20100218057
    Abstract: 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: Application
    Filed: December 21, 2009
    Publication date: August 26, 2010
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Takashi MAKI, Daisuke Tsukuda, Tetsuya Hiramatsu
  • Patent number: 7315997
    Abstract: 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: Grant
    Filed: May 17, 2004
    Date of Patent: January 1, 2008
    Assignee: Fujitsu Limited
    Inventors: Hitoshi Watanabe, Hideaki Konishi, Yuko Katoh, Kazuyuki Yamamura, Naoko Karasawa, Takeshi Doi, Osamu Ōkano, Junko Kumagai, Koichi Itaya, Daisuke Tsukuda, Ryuji Shimizu, Toshihito Shimizu
  • Publication number: 20050172254
    Abstract: 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: Application
    Filed: May 17, 2004
    Publication date: August 4, 2005
    Applicant: FUJITSU LIMITED
    Inventors: Hitoshi Watanabe, Hideaki Konishi, Yuko Katoh, Kazuyuki Yamamura, Naoko Karasawa, Takeshi Doi, Osamu Okano, Junko Kumagai, Koichi Itaya, Daisuke Tsukuda, Ryuji Shimizu, Toshihito Shimizu