Patents by Inventor Eiichi Okuno

Eiichi Okuno 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: 10563997
    Abstract: A multisensory interface control method for a multisensory interface that includes a plurality of information transmission channels, each of which performing information transmission by utilizing one or a plurality of five senses is provided. The multisensory interface control method includes: estimating a user status indicating at least one of an emotional status and an attentional status of a user; setting weightings each of which indicates a degree of importance of a corresponding information transmission channel in accordance with the user status estimated; and changing allocations of a plurality of sets of partial content that configure content transmitted via the multisensory interface, the allocations changed in accordance with the weightings.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: February 18, 2020
    Assignee: DENSO CORPORATION
    Inventors: Ryo Kyung Lee, Keisuke Hachisuka, Eiichi Okuno
  • Publication number: 20200017125
    Abstract: A wakefulness maintenance apparatus includes a presentation recording unit and a presentation execution unit. The presentation recording unit records in-vehicle presentation contents each including a corresponding one of scenes, an auditory stimulus action associated with the scene, and at least one stimulus action selected from a group of a visual stimulus action, a tactile stimulus action, and an olfactory stimulus action which are associated with the scene. The presentation execution unit executes, based on the in-vehicle presentation contents recorded in the presentation recording unit, an in-vehicle presentation including provision of: the auditory stimulus action associated with the scene, and the at least one stimulus action selected from the group of the visual stimulus action, tactile stimulus action, and olfactory stimulus action which are associated with the scene.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Inventors: Satori HACHISUKA, Masaru KAKIZAKI, Eiichi OKUNO
  • Publication number: 20190273606
    Abstract: A verification terminal includes a storage unit that stores partial block data. The partial block data is the latest data that a part of block data for update and addition in chronological order. The verification terminal selects a plurality of approval terminals to approve the partial block data stored in the storage unit. When a transaction included in the partial block data stored in the storage unit is updated by the verification terminal, the verification terminal transmits an approval request that requests the selected approval terminals to approve the updated partial block data to which the updated transaction and a hash value of the partial block data before updating are added. The verification terminal executes an update process of the partial block data based on approval results returned from the approval terminals in response to the approval request transmitted by the approval requesting unit.
    Type: Application
    Filed: February 28, 2019
    Publication date: September 5, 2019
    Inventors: Tatsuya OKABE, Eiichi OKUNO, Takao NOJIRI
  • Publication number: 20190260763
    Abstract: In a verification terminal for verifying properness of an information item composed of a data string, a storage unit stores an own-terminal information item comprised of a data string, and a verification value generation unit generates a hash value of the own-terminal information item stored in the storage unit as an own-terminal hash value. A verification value acquisition unit communicates with at least one other verification terminal that should store an other-terminal information item t to thereby acquire a hash value of the other-terminal information item from the at least one other verification terminal as an other-terminal hash value. The other-terminal information item is conditioned to be identical to the own-terminal information item. A verification execution unit verifies properness of the own-terminal information item in accordance with whether the own-terminal hash value is consistent with the other-terminal hash value.
    Type: Application
    Filed: February 19, 2019
    Publication date: August 22, 2019
    Inventors: Tatsuya OKABE, Eiichi OKUNO, Takao NOJIRI
  • Patent number: 10155895
    Abstract: A composite heat storage material includes a heat storage material and an inorganic material. The heat storage material is made of a strongly correlated electron material that stores and dissipates heat via solid-solid phase transition. The inorganic material is different from the material of the heat storage material. The heat storage material and the inorganic material are mixed. The composite heat storage material can have characteristics of both the heat storage material and the inorganic material.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: December 18, 2018
    Assignee: DENSO CORPORATION
    Inventors: Shinya Kasamatsu, Eiichi Okuno, Yasushi Kono, Takuya Fuse
  • Patent number: 10126072
    Abstract: A heat storage unit or a heat storage system is a heat storage unit including: a heat storage portion having a first material with a strongly correlated electron system material; and a heat conduction portion having a second material higher in a thermal conductivity than the first material and being in contact with the heat storage portion. The heat storage unit may have a laminated structure in which the heat storage portion and the heat conduction portion are alternately laminated on each other. For example, a metal-insulator phase transition material or a transition metal oxide may be used as the strongly correlated electron system material. The second material may be metal or ceramics.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: November 13, 2018
    Assignee: DENSO CORPORATION
    Inventors: Shinya Kasamatsu, Eiichi Okuno, Yasushi Kouno, Takuya Fuse
  • Patent number: 9998196
    Abstract: An antenna device includes: antennas; magnetic oscillation element units converting electrical energy to high-frequency power; and a modulator outputting electrical energy input from outside to at least two magnetic oscillation element units, with a time difference to differentiate phases of high-frequency power converted from electrical energy by at least two magnetic oscillation element units. The magnetic oscillation element units respectively include a pair of electrodes, and further include, between the pair of electrodes, a PIN layer, a free layer, and an intermediate layer. A resistance value of an element configured by the PIN, free and intermediate layers changes according to the angle between the magnetization direction of the PIN layer and the magnetization direction of the free layer. The antennas transmit electromagnetic waves to open space outside the magnetic oscillation element units with the supply of high-frequency power.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: June 12, 2018
    Assignee: DENSO CORPORATION
    Inventors: Koutarou Mizunuma, Yuu Watanabe, Yasushi Kouno, Eiichi Okuno, Takuya Fuse, Hirokazu Ohyabu
  • Publication number: 20170353225
    Abstract: An antenna device includes: antennas; magnetic oscillation element units converting electrical energy to high-frequency power, and a modulator outputting electrical energy input from outside to at least two magnetic oscillation element units, with a time difference to differentiate phases of high-frequency power converted from electrical energy by at least two magnetic oscillation element units. The magnetic oscillation element units respectively include a pair of electrodes, and further include, between the pair of electrodes, a PIN layer, a free layer, and an intermediate layer. A resistance value of an element configured by the PIN, free and intermediate layers changes according to the angle between the magnetization direction of the PIN layer and the magnetization direction of the free layer. The antennas transmit electromagnetic waves to open space outside the magnetic oscillation element units with the supply of high-frequency power.
    Type: Application
    Filed: December 22, 2015
    Publication date: December 7, 2017
    Applicant: DENSO CORPORATION
    Inventors: Koutarou MIZUNUMA, Yuu WATANABE, Yasushi KOUNO, Eiichi OKUNO, Takuya FUSE, Hirokazu OHYABU
  • Publication number: 20170323568
    Abstract: A vehicular information display apparatus is provided which includes a display apparatus provided in a vehicle compartment and a display controller for controlling display of the display apparatus and is arranged to display specific information about a vehicle in a form to include a graphic on a screen of the display apparatus. The vehicular information display apparatus switches between a first display mode in which the specific information is displayed on a display region in the screen of the display apparatus and a second display mode in which the specific information is displayed on a display region smaller than the first display mode in the screen of the display apparatus. The display controller displays the graphic of the specific information by changing an orientation or a shape of the graphic when the display region is changed.
    Type: Application
    Filed: October 19, 2015
    Publication date: November 9, 2017
    Inventors: Naoya Inoue, Eiichi Okuno, Katsunori Abe, Toshiyuki Kondoh, Yasutaka Kuriya, Kentaro Inui
  • Publication number: 20170314951
    Abstract: A multisensory interface control method for a multisensory interface that includes a plurality of information transmission channels, each of which performing information transmission by utilizing one or a plurality of five senses is provided. The multisensory interface control method includes: estimating a user status indicating at least one of an emotional status and an attentional status of a user; setting weightings each of which indicates a degree of importance of a corresponding information transmission channel in accordance with the user status estimated; and changing allocations of a plurality of sets of partial content that configure content transmitted via the multisensory interface, the allocations changed in accordance with the weightings.
    Type: Application
    Filed: October 12, 2015
    Publication date: November 2, 2017
    Applicant: Denso Corporation
    Inventors: Ryo Kyung Lee, Keisuke Hachisuka, Eiichi Okuno
  • Publication number: 20170298262
    Abstract: A composite heat storage material includes a heat storage material and an inorganic material. The heat storage material is made of a strongly correlated electron material that stores and dissipates heat via solid-solid phase transition. The inorganic material is different from the material of the heat storage material. The heat storage material and the inorganic material are mixed. The composite heat storage material can have characteristics of both the heat storage material and the inorganic material.
    Type: Application
    Filed: October 8, 2015
    Publication date: October 19, 2017
    Inventors: Shinya KASAMATSU, Eiichi OKUNO, Yasushi KONO, Takuya FUSE
  • Publication number: 20170276436
    Abstract: A heat storage unit or a heat storage system is a heat storage unit including: a heat storage portion having a first material with a strongly correlated electron system material; and a heat conduction portion having a second material higher in a thermal conductivity than the first material and being in contact with the heat storage portion. The heat storage unit may have a laminated structure in which the heat storage portion and the heat conduction portion are alternately laminated on each other. For example, a metal-insulator phase transition material or a transition metal oxide may be used as the strongly correlated electron system material. The second material may be metal or ceramics.
    Type: Application
    Filed: September 22, 2015
    Publication date: September 28, 2017
    Inventors: Shinya KASAMATSU, Eiichi OKUNO, Yasushi KOUNO, Takuya FUSE
  • Patent number: 8970088
    Abstract: A thermionic converter for converting thermal energy to electrical energy includes an emitter and a collector. The emitter emits thermionic electrons upon receipt of heat from a heat source. The emitter is made of a first semiconductor material to which a first semiconductor impurity is doped with a first concentration. The collector is spaced and opposite to the emitter to receive the thermionic electrons emitted from the emitter so that the thermal energy is converted to electrical energy. The collector is made of a second semiconductor material to which a second semiconductor impurity is doped with a second concentration less than the first concentration.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: March 3, 2015
    Assignee: Denso Corporation
    Inventors: Yuji Kimura, Susumu Sobue, Mitsuhiro Kataoka, Eiichi Okuno, Shoichi Kawai
  • Patent number: 8470091
    Abstract: A direction of a dislocation line of a threading dislocation is aligned, and an angle between the direction of the dislocation line of the threading dislocation and a [0001]-orientation c-axis is equal to or smaller than 22.5 degrees. The threading dislocation having the dislocation line along with the [0001]-orientation c-axis is perpendicular to a direction of a dislocation line of a basal plane dislocation. Accordingly, the dislocation does not provide an extended dislocation on the c-face, so that a stacking fault is not generated. Thus, when an electric device is formed in a SiC single crystal substrate having the direction of the dislocation line of the threading dislocation, which is the [0001]-orientation c-axis, a SiC semiconductor device is obtained such that device characteristics are excellent without deterioration, and a manufacturing yield ration is improved.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: June 25, 2013
    Assignee: DENSO CORPORATION
    Inventors: Yasuo Kitou, Hiroki Watanabe, Masanori Nagaya, Kensaku Yamamoto, Eiichi Okuno
  • Patent number: 8324704
    Abstract: A silicon carbide semiconductor device with a Schottky barrier diode includes a first conductivity type silicon carbide substrate, a first conductivity type silicon carbide drift layer on a first surface of the substrate, a Schottky electrode forming a Schottky contact with the drift layer, and an ohmic electrode on a second surface of the substrate. The Schottky electrode includes an oxide layer in direct contact with the drift layer. The oxide layer is made of an oxide of molybdenum, titanium, nickel, or an alloy of at least two of these elements.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: December 4, 2012
    Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeo Yamamoto, Takeshi Endo, Eiichi Okuno, Hirokazu Fujiwara, Masaki Konishi, Takashi Katsuno, Yukihiko Watanabe
  • Patent number: 8193564
    Abstract: A silicon carbide semiconductor device includes a substrate, a drift layer located on a first surface of the substrate, a base region located on the drift layer, a source region located on the base region, a trench penetrating the source region and the base region to the drift layer, a channel layer located in the trench, a gate insulating layer located on the channel layer, a gate electrode located on the gate insulating layer, a source electrode electrically coupled with the source region and the base region, a drain electrode located on a second surface of the substrate, and a deep layer. The deep layer is located under the base region, extends to a depth deeper than the trench and is formed along an approximately normal direction to a sidewall of the trench.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: June 5, 2012
    Assignee: DENSO CORPORATION
    Inventors: Naohiro Suzuki, Eiichi Okuno, Hideo Matsuki
  • Patent number: 8168485
    Abstract: A method of making a semiconductor device includes forming a p-type semiconductor region to an n-type semiconductor substrate in such a manner that the p-type semiconductor region is partially exposed to a top surface of the semiconductor substrate, forming a Schottky electrode of a first material in such a manner that the Schottky electrode is in Schottky contact with an n-type semiconductor region exposed to the top surface of the semiconductor substrate, and forming an ohmic electrode of a second material different from the first material in such a manner that the ohmic electrode is in ohmic contact with the exposed p-type semiconductor region. The Schottky electrode is formed earlier than the ohmic electrode.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: May 1, 2012
    Assignee: DENSO CORPORATION
    Inventors: Takeshi Endo, Eiichi Okuno, Takeo Yamamoto, Hirokazu Fujiwara, Masaki Konishi, Yukihiko Watanabe, Takashi Katsuno
  • Patent number: 8164100
    Abstract: A semiconductor device is provided in which the contact resistance of the interface between an electrode and the semiconductor substrate is reduced. The semiconductor device includes a 4H polytype SiC substrate, and an electrode formed on a surface of the substrate. A 3C polytype layer, which extends obliquely relative to the surface of the substrate and whose end portion at the substrate surface is in contact with the electrode, is formed at the surface of the substrate. The 3C polytype layer has a lower bandgap than 4H polytype. Hence, electrons present in the 4H polytype region pass through the 3C polytype layer and reach the electrode. More precisely, the width of the passageway of the electrons is determined by the thickness of the 3C polytype layer. Consequently, with this semiconductor device, in which the passageway of the electrons is narrow, the electrons are able to reach the electrode at a speed close to the theoretical value, by the quantum wire effect.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: April 24, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Hirokazu Fujiwara, Masaki Konishi, Eiichi Okuno
  • Patent number: 8154074
    Abstract: A SiC semiconductor device includes: a substrate; a drift layer on a first side of the substrate; a trench in the drift layer; a base region contacting a sidewall of the trench; a source region in an upper portion of the base region; a gate electrode in the trench via a gate insulation film; a source electrode on the source region; and a drain electrode on a second side of the substrate. The source region has multi-layered structure including a first layer and a second layer. The first layer as an upper layer contacts the source electrode with ohmic contact. The second layer as a lower layer has an impurity concentration, which is lower than an impurity concentration of the first layer.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: April 10, 2012
    Assignee: DENSO CORPORATION
    Inventors: Kensaku Yamamoto, Takeshi Endo, Eiichi Okuno
  • Patent number: 7994513
    Abstract: A silicon carbide semiconductor device includes a substrate, a drift layer located on a first surface of the substrate, a base region located on the drift layer, a source region located on the base region, a trench sandwiched by each of the base region to the drift layer, a channel layer located in the trench, a gate insulating layer located on the channel layer, a gate electrode located on the gate insulating layer, a source electrode electrically coupled with the source region and the base region, a drain electrode located on a second surface of the substrate, and a deep layer located under the base region and extending to a depth deeper than the trench. The deep layer is formed into a lattice pattern.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: August 9, 2011
    Assignee: DENSO CORPORATION
    Inventors: Kensaku Yamamoto, Eiichi Okuno