Patents by Inventor Naoki Okamoto

Naoki Okamoto 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: 10364742
    Abstract: The present invention relates to a control device and to a control method for a vehicle drive mechanism including a moving body having a movability range regulated by two stoppers, and a sensor which senses a position of the moving body. The control device of the present invention learns an output of the sensor corresponding to a contact state of a high-rigidity stopper, and limits, to a lower level, an operation variable of the actuator for moving the moving body toward a low-rigidity stopper along with an increase in an amount of change in the output of the sensor from the contact state of the high-rigidity stopper. Then, the control device learns the output of the sensor corresponding to the contact state of the low-rigidity stopper, and controls the actuator based on the output of the sensor learned at both the stopper positions.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: July 30, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Naoki Okamoto, Yuya Shinozaki
  • Publication number: 20190129583
    Abstract: An information processing device includes a storage processing unit that, in a case of storing a document or a copy of the document inside a storage area in a different specific storage area, executes a process of setting information indicating the storage area in an attribute indicating an original storage location of the document to store, and storing the document in the specific storage area.
    Type: Application
    Filed: October 19, 2018
    Publication date: May 2, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro YAMADA, Takeshi KUNIMASA, Atsushi MARUYAMA, Naoki OKAMOTO
  • Publication number: 20190085762
    Abstract: The present invention relates to a control device and to a control method for a vehicle drive mechanism including a moving body having a movability range regulated by two stoppers, and a sensor which senses a position of the moving body. The control device of the present invention learns an output of the sensor corresponding to a contact state of a high-rigidity stopper, and limits, to a lower level, an operation variable of the actuator for moving the moving body toward a low-rigidity stopper along with an increase in an amount of change in the output of the sensor from the contact state of the high-rigidity stopper. Then, the control device learns the output of the sensor corresponding to the contact state of the low-rigidity stopper, and controls the actuator based on the output of the sensor learned at both the stopper positions.
    Type: Application
    Filed: October 16, 2018
    Publication date: March 21, 2019
    Inventors: Naoki OKAMOTO, Yuya SHINOZAKI
  • Patent number: 10228380
    Abstract: Described herein are methods of identifying compounds that can modulate the transport of a steroid hormone across a phospholipid membrane. Also described herein are methods of identifying compounds that can affect the transcriptional activity of a steroid hormone nuclear receptor.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 12, 2019
    Assignee: The Regents of the University of California
    Inventors: Naoki Yamanaka, Sachiko Yamanaka, Naoki Okamoto, Riyan Bittar
  • Publication number: 20190052198
    Abstract: The present invention provides a control device and a control method for a brushless motor, including energization modes for selecting a phase to be energized by pulse width modulation operation from among phases of the brushless motor, and being provided for controlling the rotation speed of the brushless motor by switching between the energization modes based on comparison of a voltage induced in a non-energized phase with its threshold value. In the control device and method, the input voltage of the brushless motor is increased when the duration for which the induced voltage is maintained unchanged or the duration for which the current energization mode is maintained employed reaches a predetermined time. This prevents the brushless motor from being staying in the stopped state, even when the load on the brushless motor abruptly increases while the brushless motor rotates at a speed within an extremely low speed range.
    Type: Application
    Filed: October 3, 2017
    Publication date: February 14, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Masaki HANO, Naoki OKAMOTO
  • Publication number: 20190045139
    Abstract: To improve image quality of an image including fog. In a signal processing apparatus including a mixing region detecting unit, and an image capturing condition updating unit, the mixing region detecting unit detects a region where a non-visible light image signal is to be mixed with a visible light image signal, the non-visible light image signal and the visible light image signal being generated by repeatedly performing imaging on a basis of a predetermined image capturing condition. The image capturing condition updating unit newly generates an image capturing condition in the non-visible light image signal on a basis of the non-visible light image signal in the detected region to update the predetermined image capturing condition. By this means, a region including fog, or the like is detected, a visible light image signal is mixed with a non-visible light image signal in the region, and image capturing conditions of the non-visible light image signal in the region are updated.
    Type: Application
    Filed: November 17, 2016
    Publication date: February 7, 2019
    Inventors: KOJI KURATA, NAOKI OKAMOTO
  • Patent number: 10197934
    Abstract: A toner having a toner particle containing a binder resin, an amorphous polyester, and a colorant, wherein a softening point of the toner is at least 110° C. and not more than 140° C.; an integrated value f1 for stress of the toner is not more than 10 g·m/sec, as measured using a tack tester, with a temperature for a probe end being 150° C. and a press holding time being 0.01 seconds; and an integrated value f2 for stress of the toner is at least 30 g·m/sec, as measured using a tack tester, with a temperature for a probe end being 150° C. and a press holding time being 0.1 seconds.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: February 5, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takashi Matsui, Naoki Okamoto, Yuujirou Nagashima, Keisuke Tanaka, Shohei Tsuda, Kosuke Fukudome, Takuya Mizuguchi
  • Publication number: 20190012303
    Abstract: An information processing apparatus includes: an attachment information assignor that assigns a comment on an electronic document made by a user as attachment information associated with a corresponding portion in the electronic document; and a conclusion attribute assignor that assigns a conclusion attribute in association with the attachment information, the conclusion attribute being an attribute indicating a type of conclusion of the attachment information.
    Type: Application
    Filed: June 26, 2018
    Publication date: January 10, 2019
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takuya OKAMOTO, Takenori MATSUO, Rumiko KAKEHI, Atsushi MARUYAMA, Naoki OKAMOTO
  • Publication number: 20180372760
    Abstract: Described herein are methods of identifying compounds that can modulate the transport of a steroid hormone across a phospholipid membrane. Also described herein are methods of identifying compounds that can affect the transcriptional activity of a steroid hormone nuclear receptor.
    Type: Application
    Filed: February 22, 2018
    Publication date: December 27, 2018
    Applicant: The Regents of the University of California
    Inventors: Naoki YAMANAKA, Sachiko YAMANAKA, Naoki OKAMOTO, Riyan BITTAR
  • Patent number: 10156800
    Abstract: Provided is a toner comprising a toner particle including a binder resin, an amorphous polyester, and a colorant, wherein the binder resin includes a vinyl resin, the toner has a softening point of at least 110° C. and not more than 140° C., an amount of the amorphous polyester is at least 4.0 parts by mass and not more than 30.0 parts by mass with respect to 100 parts by mass of the binder resin, and a temperature T at which an area increasing rate of one toner particle sample becomes 1.40, is not more than 110° C., and a slope of the area increasing rate with respect to a temperature in the range of the area increasing rate of 1.40 to 2.00 is not more than 0.07.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: December 18, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shohei Tsuda, Naoki Okamoto, Takashi Matsui, Yuujirou Nagashima, Keisuke Tanaka
  • Patent number: 10138806
    Abstract: The present invention relates to a control device and to a control method for a vehicle drive mechanism including a moving body having a movability range regulated by two stoppers, and a sensor which senses a position of the moving body. The control device of the present invention learns an output of the sensor corresponding to a contact state of a high-rigidity stopper, and limits, to a lower level, an operation variable of the actuator for moving the moving body toward a low-rigidity stopper along with an increase in an amount of change in the output of the sensor from the contact state of the high-rigidity stopper. Then, the control device learns the output of the sensor corresponding to the contact state of the low-rigidity stopper, and controls the actuator based on the output of the sensor learned at both the stopper positions.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: November 27, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Naoki Okamoto, Yuya Shinozaki
  • Publication number: 20180308270
    Abstract: An information processing apparatus includes an output unit. When pieces of additional information are extracted, the pieces of additional information being disposed in copies of an identical image and satisfying a predetermined condition, the output unit outputs data in which combined additional information is disposed in the image. The combined additional information is information in which the pieces of additional information are combined.
    Type: Application
    Filed: November 9, 2017
    Publication date: October 25, 2018
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Takenori MATSUO, Rumiko KAKEHI, Atsushi MARUYAMA, Naoki OKAMOTO, Takuya OKAMOTO
  • Patent number: 10094707
    Abstract: An optical attenuator has a sampling prism, a biconcave lens and an absorption member. A branch member splits a laser beam. An expansion member expands the shape of the split laser beam. The absorption member absorbs the energy of the expanded laser beam. A light receiving part of the absorption member receives the expanded laser beam. A first distribution part of the absorption member adjacent to the light receiving part, introduces or leads out a medium (cooling water) from a first opening and distributes the medium, which absorbs heat generated in the light receiving part by the laser beam. A second distribution part of the absorption member leads out or introduces cooling water from a second opening, and distributes the cooling water, which moves through a communicating part that communicates with the first distribution part.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: October 9, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Naoyuki Morimiya, Naoyuki Torii, Naoki Okamoto, Naoya Yoshida, Tsuneo Saito
  • Publication number: 20180287526
    Abstract: A control device of a synchronous electric motor includes: the synchronous electric motor with three-phase stator windings Y-connected; a detection unit that detects a neutral point potential which is a potential at a Y connection point; and an inverter that drives the synchronous electric motor. The control device of the synchronous electric motor which controls the synchronous electric motor using the inverter, includes a measurement mode in which the neutral point potential is detected in a state in which the synchronous electric motor is energized by an AC current and controls the synchronous electric motor based on a value of the neutral point potential detected in the measurement mode.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 4, 2018
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yoshitaka IWAJI, Masaki HANO, Naoki OKAMOTO, Takeshi UMETSU
  • Publication number: 20180254722
    Abstract: Before sensorless control is performed on a three-phase brushless motor by sequentially switching between six energization modes each for selecting two phases to be energized from the three phases, the initial position of the rotor is estimated based on a change in a second induced voltage by: momentarily energizing the three-phase brushless motor according to each of the six energization modes, and detecting six first induced voltages each generated in a non-energized phase by the energization; calculating three induced voltage differences corresponding respectively to three non-energized phases, each induced voltage difference being a difference between two of the six first induced voltages that are detected during energization according to two energization modes that share a non-energized phase; and energizing the three-phase brushless motor according a predetermined energization mode selected based on the three induced voltage differences, and detecting the second induced voltage generated in a non-energi
    Type: Application
    Filed: January 5, 2017
    Publication date: September 6, 2018
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Takeshi UMETSU, Naoki OKAMOTO
  • Patent number: 10012152
    Abstract: A control device for an internal combustion engine including a variable compression ratio mechanism for changing a compression ratio by using an electric actuator prohibits control of changing the compression ratio to a higher compression ratio when a failure occurs in the variable compression ratio mechanism. Thereby, upon failure occurrence, the compression ratio of the variable compression ratio mechanism at the time of the failure occurrence is maintained or reduced to less than this compression ratio so as to protect the electric actuator and prevent abrupt changes in torque.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 3, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yuya Shinozaki, Naoki Okamoto, Akira Kiyomura
  • Patent number: 10012919
    Abstract: A toner comprising a toner particle containing a binder resin, a colorant, an amorphous polyester, and a crystalline polyester, wherein the binder resin contains a vinyl resin; the amorphous polyester has a monomer unit derived from a linear aliphatic dicarboxylic acid having 6 to 12 carbons, and a monomer unit derived from a dialcohol; the content of the monomer unit derived from a linear aliphatic dicarboxylic acid having 6 to 12 carbons is 10 to 50 mol % with reference to the total monomer units derived from a carboxylic acid in the amorphous polyester; and in a cross section of the toner particle, the vinyl resin constitutes a matrix and the amorphous polyester constitutes domains, and the crystalline polyester is present in the interior of the domains.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: July 3, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takashi Matsui, Yuujirou Nagashima, Keisuke Tanaka, Shohei Tsuda, Naoki Okamoto
  • Patent number: 9923502
    Abstract: A method for detecting a potential (Vn) includes stator wirings in a Y connection, and automatically adjusting a relationship with a position of a rotor as a system for realizing rotor position-sensorless stable drive of an AC motor where the three-phase stator wirings are in Y connection in the stop and low-speed ranges. A synchronous motor control apparatus includes a three-phase synchronous motor in which three-phase stator wirings are in a Y connection, and an inverter for driving the motor, wherein the synchronous motor is DC-conducted thereby to move a rotor to a predetermined position, and is applied with a pulse-shaped voltage from the inverter in the moved state so that a neutral point potential as potential (Vn) of the Y connection point is acquired when the pulse voltage is applied, thereby driving the synchronous motor based on the acquired value.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: March 20, 2018
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yoshitaka Iwaji, Masaki Hano, Naoki Okamoto, Takeshi Umetsu
  • Patent number: 9915259
    Abstract: In an apparatus for controlling an electric pump supplying operating oil to a driving system or the like of a vehicle, control satisfying both responsiveness and reduction in power consumption is performed even in a case in which an oil temperature sensor and a pump characteristic are abnormal. After starting of the electric pump, feedback control is performed in which a rotation number Nm of a driving motor is settled in a target rotation number Na set to satisfy predetermined performance. After satisfying a predetermined condition in which the motor rotation number Nm is in a stable state, motor current Im is settled in an indicated current Ip within a range of being equal to or less than a current limit value IL while the motor rotation number Nm is maintained equal to or greater than a required rotation number Np corresponding to the indicated current Ip.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 13, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Naoki Okamoto
  • Patent number: 9911986
    Abstract: A manufacturing method for manufacturing a fuel cell separator assembly includes a joining step for bringing opposing projections of uneven portions of separators into contact with each other through use of pressing members to join the projections through use of a welding robot. In the joining step, an elastic member is interposed between the pressing members and at least one of first and second separators so that a pressing force from the pressing members is imparted to the first and second separators. In this way, the opposing projections are brought into contact with each other by elastic deformation of the elastic member.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: March 6, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Naoki Okamoto, Akira Shimizu