Patents by Inventor Hiroyuki Akiyama

Hiroyuki Akiyama 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).

  • Publication number: 20240377687
    Abstract: A liquid crystal display panel includes an active matrix substrate including a gate layer including gate lines, a source layer including source lines, and an alignment film covering the gate layer and the source layer, a color filter substrate, placed opposite the active matrix substrate, that includes a black matrix including, in planar view, first portions separately overlapping each of the source lines and second portions crossing the first portions and separately overlapping each of the gate lines and spacers disposed in cross regions in which the first portions and the second portions cross each other, and a liquid crystal layer disposed between the active matrix substrate and the color filter substrate. The active matrix substrate further includes bank portions provided in positions surrounding the spacers within regions overlapping the cross regions in planar view.
    Type: Application
    Filed: March 22, 2024
    Publication date: November 14, 2024
    Inventors: Hiroto AKIYAMA, Hiroyuki OHGAMI
  • Publication number: 20240326757
    Abstract: A drive motor control system performs control of a drive motor of a vehicle that includes the drive motor and a battery. The drive motor control system includes a control processor that controls an electric current supply from the battery to the drive motor and includes an operational state determiner that determines whether a condition that the vehicle is being stopped, a condition that a parking brake is being released, and a condition that a parking range is being selected are satisfied. When the operational state determiner determines that all the conditions are satisfied upon a reception of a trigger signal instructing a start of the control of the drive motor, the control processor performs control of an inverter such that the electric current supply is performed to cause the drive motor to repeat small revers rotations and thereby induce small movements of the vehicle in front and rear directions.
    Type: Application
    Filed: March 19, 2024
    Publication date: October 3, 2024
    Inventors: Shotaro SUZUKI, Yoshitsugu INOUE, Hiroyuki AKIYAMA, Go YANAGISAWA, Takahiro KAWASHIRI, Tong WANG
  • Publication number: 20240328799
    Abstract: An information processing apparatus includes one or more processors and one or more storage media storing a program. The program includes one or more instructions that cause the one or more processors to execute acquiring information on a current location of a vehicle and a destination of the vehicle; acquiring one or more scheduled travel routes for reaching the destination from the current location; acquiring current weather information; predicting a standstill section in which a standstill situation is likely to occur on the one or more scheduled travel routes; predicting a standstill time during which a standstill situation occurs in the predicted standstill section; calculating heating power consumption due to use of heating over the predicted standstill time; performing a determination as to whether to additionally charge a traveling battery of the vehicle in accordance with the heating power consumption; and presenting information corresponding to a result of the determination.
    Type: Application
    Filed: March 4, 2024
    Publication date: October 3, 2024
    Applicant: SUBARU CORPORATION
    Inventors: Takahiro KAWASHIRI, Tong WANG, Hiroyuki AKIYAMA, Go YANAGISAWA, Shotaro SUZUKI, Yoshitsugu INOUE
  • Patent number: 12105009
    Abstract: In relation to application of artificial intelligence to image analysis of particles, to make it possible to provide data for machine learning corresponding to user demands while making it possible to reduce, as much as possible, man-hours taken to, for example, prepare vast amounts of actual image data obtained by actually capturing images of particles, the present invention generates virtual particle image data, which is image data of a virtual particle, on the basis of a predetermined condition, generates label data corresponding to the virtual particle, and associates the virtual particle image data with the label data.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: October 1, 2024
    Assignee: HORIBA, LTD.
    Inventors: Hiroyuki Koshikawa, Hisashi Akiyama, Tetsuya Mori, Kosuke Matsuo, Hitoshi Nakatani, Toshihiro Katsuda
  • Patent number: 11760338
    Abstract: A vehicle control apparatus to be applied to a hybrid vehicle includes a continuously variable transmission, a clutch mechanism, and a travel processor. The continuously variable transmission is coupled to an engine and a first motor via an input passage, and coupled to drive wheels via an output passage. The clutch mechanism is provided on the output passage. When the travel mode is switched from a first mode in which the clutch mechanism is engaged to the second mode in which the clutch mechanism is released, the travel processor releases the clutch mechanism and stops the continuously variable transmission while maintaining a speed ratio of the continuously variable transmission. When the travel mode is switched from the second mode to the first mode, the travel processor synchronizes rotation speeds of input-side and output-side portions of the clutch mechanism by controlling the continuously variable transmission, and engages the clutch mechanism.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: September 19, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Satoshi Inoue, Hiroyuki Akiyama, Naohiko Hirosumi
  • Patent number: 11607953
    Abstract: A vehicle control system to be mounted in a hybrid electric vehicle includes an engine, a center differential that includes a front-wheel-side output portion and a rear-wheel-side output portion and distributes torque outputted from the engine to a front wheel and a rear wheel, a limited slip differential mechanism that limits a differential between the front-wheel-side output portion and the rear-wheel-side output portion, and a motor disposed in a drive-power transferring system that transfers drive power from the rear-wheel-side output portion to the rear wheel. The vehicle control system includes a processor. When the hybrid electric vehicle is switched from a first traveling mode to a second traveling mode, the processor stops the engine while causing the limited slip differential mechanism to limit the differential between the front-wheel-side output portion and the rear-wheel-side output portion.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: March 21, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Naohiko Hirosumi, Satoshi Inoue, Hiroyuki Akiyama
  • Publication number: 20220097681
    Abstract: A vehicle control apparatus to be applied to a hybrid vehicle includes a continuously variable transmission, a clutch mechanism, and a travel processor. The continuously variable transmission is coupled to an engine and a first motor via an input passage, and coupled to drive wheels via an output passage. The clutch mechanism is provided on the output passage. When the travel mode is switched from a first mode in which the clutch mechanism is engaged to the second mode in which the clutch mechanism is released, the travel processor releases the clutch mechanism and stops the continuously variable transmission while maintaining a speed ratio of the continuously variable transmission. When the travel mode is switched from the second mode to the first mode, the travel processor synchronizes rotation speeds of input-side and output-side portions of the clutch mechanism by controlling the continuously variable transmission, and engages the clutch mechanism.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 31, 2022
    Inventors: Satoshi INOUE, Hiroyuki AKIYAMA, Naohiko HIROSUMI
  • Patent number: 11261942
    Abstract: A speed reducer capable of reliably reducing and changing speed while suppressing heat generation and abrasion includes: a plurality of gears rotatably supported on an output shaft; a shifter engageable with an engagement gear selected from the plurality of gears to couple the engagement gear to the output shaft; and a plurality of bushes disposed in an annular groove formed in the shifter to move the shifter to the engagement gear and thereby engage the shifter with the engagement gear; and a bush support supporting the plurality of bushes so as to allow them to swing individually.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: March 1, 2022
    Assignee: KOBE STEEL, LTD.
    Inventors: Hiroyuki Akiyama, Yasuo Yoshii, Yuji Konishi, Kazuo Yamaguchi, Kazuo Iritani
  • Publication number: 20220055475
    Abstract: A vehicle control system to be mounted in a hybrid electric vehicle includes an engine, a center differential that includes a front-wheel-side output portion and a rear-wheel-side output portion and distributes torque outputted from the engine to a front wheel and a rear wheel, a limited slip differential mechanism that limits a differential between the front-wheel-side output portion and the rear-wheel-side output portion, and a motor disposed in a drive-power transferring system that transfers drive power from the rear-wheel-side output portion to the rear wheel. The vehicle control system includes a processor. When the hybrid electric vehicle is switched from a first traveling mode to a second traveling mode, the processor stops the engine while causing the limited slip differential mechanism to limit the differential between the front-wheel-side output portion and the rear-wheel-side output portion.
    Type: Application
    Filed: August 18, 2021
    Publication date: February 24, 2022
    Applicant: SUBARU CORPORATION
    Inventors: Naohiko HIROSUMI, Satoshi INOUE, Hiroyuki AKIYAMA
  • Patent number: 10871219
    Abstract: Provided is a speed-switchable reduction gear including: an input shaft; an output shaft; a plurality of output-side geared-wheels mounted on the output shaft; a shifter for selecting the output-side geared-wheel to be used; a shifter-side first bearing and a non-shifter-side second bearing provided to each the output-side geared-wheel; and a plurality of dividing walls each provided in each cell between the first and second bearings. The output shaft has an axial lubricating-oil flow path and a plurality of supply flow paths. Each dividing wall divides each cell into a first cell adjacent to the first bearing and a second cell adjacent to the second bearing and allows lubricating oil to be supplied from the supply flow paths into the first and second cells so as to make pressure of lubricating oil in the first cell higher than that in the second cell.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: December 22, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Hiroyuki Akiyama, Yasuo Yoshii, Yuji Konishi, Kazuo Yamaguchi, Kazuo Iritani
  • Publication number: 20190383362
    Abstract: A speed reducer capable of reliably reducing and changing speed while suppressing heat generation and abrasion includes: a plurality of gears rotatably supported on an output shaft; a shifter engageable with an engagement gear selected from the plurality of gears to couple the engagement gear to the output shaft; and a plurality of bushes disposed in an annular groove formed in the shifter to move the shifter to the engagement gear and thereby engage the shifter with the engagement gear; and a bush support supporting the plurality of bushes so as to allow them to swing individually.
    Type: Application
    Filed: February 9, 2018
    Publication date: December 19, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Hiroyuki AKIYAMA, Yasuo YOSHII, Yuji KONISHI, Kazuo YAMAGUCHI, Kazuo IRITANI
  • Publication number: 20190048993
    Abstract: Provided is a speed-switchable reduction gear including: an input shaft; an output shaft; a plurality of output-side geared-wheels mounted on the output shaft; a shifter for selecting the output-side geared-wheel to be used; a shifter-side first bearing and a non-shifter-side second bearing provided to each the output-side geared-wheel; and a plurality of dividing walls each provided in each cell between the first and second bearings. The output shaft has an axial lubricating-oil flow path and a plurality of supply flow paths. Each dividing wall divides each cell into a first cell adjacent to the first bearing and a second cell adjacent to the second bearing and allows lubricating oil to be supplied from the supply flow paths into the first and second cells so as to make pressure of lubricating oil in the first cell higher than that in the second cell.
    Type: Application
    Filed: February 10, 2017
    Publication date: February 14, 2019
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventors: Hiroyuki AKIYAMA, Yasuo YOSHII, Yuji KONISHI, Kazuo YAMAGUCHI, Kazuo IRITANI
  • Patent number: 9822745
    Abstract: An injector drive device supplies driving electric power to injectors injecting fuel to cylinders of an internal combustion engine. The cylinders are grouped into multiple groups including at least a first cylinder group and a second cylinder group. The injector drive device includes: a booster circuit that boosts voltage of electric power supplied from an external power source; a first and second capacitors that accumulates electric power to be supplied to the injectors of the first cylinder group and the second cylinder group respectively; switch elements that selectively supply the output of the booster circuit to the capacitors; and a controller that, in the case where a charging amounts of the capacitors both are below a predetermined value, switches the switch elements to supply the output of the booster circuit preferentially to the capacitor that has a shorter period until a next planned fuel discharge start.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: November 21, 2017
    Assignee: SUBARU CORPORATION
    Inventor: Hiroyuki Akiyama
  • Publication number: 20160069311
    Abstract: An injector drive device supplies driving electric power to injectors injecting fuel to cylinders of an internal combustion engine. The cylinders are grouped into multiple groups including at least a first cylinder group and a second cylinder group. The injector drive device includes: a booster circuit that boosts voltage of electric power supplied from an external power source; a first and second capacitors that accumulates electric power to be supplied to the injectors of the first cylinder group and the second cylinder group respectively; switch elements that selectively supply the output of the booster circuit to the capacitors; and a controller that, in the case where a charging amounts of the capacitors both are below a predetermined value, switches the switch elements to supply the output of the booster circuit preferentially to the capacitor that has a shorter period until a next planned fuel discharge start.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 10, 2016
    Inventor: Hiroyuki AKIYAMA
  • Patent number: 8175048
    Abstract: A multi-hop wireless communication system which synchronizes a time signal generated by a timer device included in each of the wireless terminals and sets a different active timing to a wireless terminal connected to each of a plurality of multi-hop routes. The wireless terminal monitors the time signal of the timer device included in the wireless terminal and activates wireless communication of the wireless terminal when it is detected that the time signal matches an active timing set in the wireless terminal.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: May 8, 2012
    Assignee: Lapis Semiconductor Co., Ltd.
    Inventor: Hiroyuki Akiyama
  • Patent number: 7577434
    Abstract: A handover method is to provided by which a station can move between access points with interruption in communication minimized. An access point assigns mobile stations existing in its own wireless network to identification codes, different from station to station, to thereby carry out association, and thereafter transmits beacon frames each containing a different identification code to the mobile stations. The identification codes are allocated beforehand specifically to each of the access points included in the wireless LAN. When the station is handed over to an adjacent access point, the adjacent access point transmits beacon frames containing the corresponding identification code to that station. Thus, the station is able to continue communication without recognizing the transfer from one wireless network to another.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: August 18, 2009
    Assignee: Oki Semiconductor Co., Ltd.
    Inventors: Yoshihisa Nakano, Hiroyuki Akiyama, Takashi Namura
  • Publication number: 20090190542
    Abstract: A multi-hop wireless communication system which synchronizes a time signal generated by a timer device included in each of the wireless terminals and sets a different active timing to a wireless terminal connected to each of a plurality of multi-hop routes. The wireless terminal monitors the time signal of the timer device included in the wireless terminal and activates wireless communication of the wireless terminal when it is detected that the time signal matches an active timing set in the wireless terminal.
    Type: Application
    Filed: January 15, 2009
    Publication date: July 30, 2009
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventor: Hiroyuki AKIYAMA
  • Publication number: 20090175255
    Abstract: A wireless terminal device and a wireless base station device can reduce power consumption required to transmit or receive data in a wireless manner. A frame sent from a wireless LAN terminal station, transfer source, is sent to another wireless LAN terminal station, transfer destination, on a transfer route indicated by routing information stored in a memory to establish a multi-hop communication with a wireless LAN base station.
    Type: Application
    Filed: January 7, 2009
    Publication date: July 9, 2009
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventors: Hiroyuki AKIYAMA, Hideaki ODAGIRI
  • Patent number: 7515527
    Abstract: An SDH transmission apparatus including a low-speed part, a high-speed part, and a cross-connect part is disclosed. The low speed part includes a first signal transmission part and a second signal transmission part, each signal transmission part including an active transmission part and a standby transmission part. In the SDH transmission apparatus, an active transmission part of the first signal transmission part transmits a signal to a first transmission line via the high-speed part, an active transmission part of the second signal transmission part transmits a signal to a second transmission line via the high-speed part, and a standby transmission part of the first signal transmission part sends a part of signals supplied to the first signal transmission part to the second transmission line via the high-speed part when a traffic amount of the signals supplied to the first signal transmission part exceed a predetermined value.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 7, 2009
    Assignee: Fujitsu Limited
    Inventors: Hiroyuki Akiyama, Takashi Fukagawa
  • Publication number: 20080288852
    Abstract: A multicarrier wireless communication system is capable of switching the modulation scheme used by each carrier during communication. This communication system includes error detectors for detecting error bits separately for respective carriers by comparing the data block of each carrier before and after correction. The modulation scheme used by a particular carrier is switched to an appropriate modulation scheme, when the S/N ratio of the particular carrier is deteriorated or improved, on the basis of the information about the corrected error bits.
    Type: Application
    Filed: November 27, 2007
    Publication date: November 20, 2008
    Applicant: OKI ELECTRIC INDUSTRY CO., LTD.
    Inventors: Teruaki Uehara, Masato Yamazaki, Hiroyuki Akiyama