Patents by Inventor Ryoji Sato

Ryoji Sato 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: 11454752
    Abstract: Provided are an optical element including a first optically-anisotropic layer consisting of a cured layer of a composition including a first liquid crystal compound, in which the first optically-anisotropic layer has 0.24 or more of a refractive index anisotropy ?n550 which is measured with light having a wavelength of 550 nm, the first optically-anisotropic layer has a first liquid crystal alignment pattern in which a direction of an optical axis derived from the first liquid crystal compound continuously changes rotationally in at least one in-plane direction, and in the first liquid crystal alignment pattern, in a case where a length ? over which the direction of the optical axis rotates 180° in a plane is defined as a single period, the length ? of the single period is 1.6 ?m or less; a method for forming a photo-alignment pattern; and a method for manufacturing an optical element.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: September 27, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Katsumi Sasata, Ryoji Goto, Hiroshi Sato, Yukito Saitoh
  • Publication number: 20220283749
    Abstract: An image forming system includes a processor configured to, in a case where a determination that an abnormality is not present in an image printed on a paper sheet fed from a first paper feeding source is made, discharge a first paper sheet on which the image determined as not having the abnormality is printed to a first discharge destination, in a case where a determination that the abnormality is present in the image is made, discharge a second paper sheet on which the image determined as having the abnormality is printed to a second discharge destination, discharge a paper sheet of a subsequent page of the second paper sheet to a third discharge destination and temporarily stop printing processing, notify a user of an instruction to arrange the paper sheet discharged to the third discharge destination in a second paper feeding source different from the first paper feeding source, and in a case where a notification indicating that the paper sheet discharged to the third discharge destination is arranged in
    Type: Application
    Filed: August 6, 2021
    Publication date: September 8, 2022
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Masae TAKABAYASHI, Katsuyuki FUJII, Toshihiro OSAKABE, Koji SUNOHARA, Takayoshi SATO, Masashi HARA, Ryoji KAWAGUCHI, Yuki AKECHI, Yutaka WATANABE, Yumiko ARAI
  • Patent number: 11406788
    Abstract: The present technology relates to information processing apparatus and method, and a program that make a stress level controllable depending on circumstances. A stress level measuring unit measures a stress level of a user on the basis of a result of detection by various types of sensors included in an input unit. A stress factor specifying unit specifies a factor causing an increase or decrease in the stress level on the basis of an action of the user in a period in which the stress level is increased or decreased. The present technology is applicable to a stress control system, for example.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: August 9, 2022
    Assignee: SONY CORPORATION
    Inventors: Naoyuki Sato, Atsushi Iwamura, Ryoji Miyazaki, Shigeru Sugaya, Masakazu Ukita, Yoshiyuki Kobayashi
  • Patent number: 11394039
    Abstract: An electrochemical reaction unit includes a unit cell including an electrolyte layer, and a cathode and an anode which face each other in a first direction with the electrolyte layer intervening therebetween, and one or a plurality of structural members. The electrochemical reaction unit further includes a glass seal member which contains glass and is in contact with two members facing each other in the first direction, the two members being selected from the unit cell and the one or the plurality of structural members. The glass seal member contains a plurality of crystal grains each having a ratio of a vertical dimension in the first direction to a horizontal dimension in a second direction orthogonal to the first direction of 1.5 or more.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: July 19, 2022
    Assignee: MORIMURA SOFC TECHNOLOGY CO., LTD.
    Inventors: Yoshiaki Sato, Ryoji Tanimura, Kenta Eguchi, Makoto Kuribayashi
  • Patent number: 10471949
    Abstract: With a motor in rotation, 0 is set as each of a d-axis current command and a q-axis current command, and offset learning is carried out. Then, in carrying out offset learning, a transmission is controlled such that a shift stage of the transmission falls within a low vehicle speed-side predetermined shift stage range. Thus, the rotational speed of the motor can be more reliably made high to a certain extent, and offset learning can be carried out. As a result, the accuracy of offset learning can be restrained from decreasing.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: November 12, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Ryoji Sato, Masayuki Baba, Shogo Tanaka, Takuya Shimaji
  • Patent number: 10166878
    Abstract: A power supply apparatus of a vehicle includes: auxiliary machines electrically connected between a battery and a converter; and a control device controlling inverters and the like based on a required vehicle power including a required charge discharge amount of the battery. The control device has a continuous voltage step-up mode and an intermittent voltage step-up mode. In the continuous voltage step-up mode, the control device calculates the required charge discharge amount based on electric power supplied from the battery. In the intermittent voltage step-up mode, the control device changes a method of calculating the required charge discharge amount to a method that calculates the required charge discharge amount based on electric power passing through the converter, and makes the required charge discharge amount smaller than the required charge discharge amount in the continuous voltage step-up mode.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: January 1, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Suguru Kumazawa, Hideki Kamatani, Ryoji Sato
  • Patent number: 10099563
    Abstract: Provided are a power supply device for a vehicle provided with a battery, a converter, and a controller, and a method for controlling the same. The controller controls the converter in a continuous boost mode in which the converter is continuously operated and an intermittent boost mode in which the converter is intermittently operated. The controller does not control the converter in the intermittent boost mode when a control that adjusts a reference point of a resolver of a motor generator is underway.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: October 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Suguru Kumazawa, Hideki Kamatani, Ryoji Sato
  • Patent number: 10081354
    Abstract: In a hybrid vehicle, noise occurrence caused in a rectangular wave control of a motor is restricted when a motor running mode is selected with a converter boosting limit applied. A motor controller for a hybrid vehicle mounted with an internal combustion engine and a motor as power sources is provided. The motor controller includes a converter capable of boosting a voltage supplied from a power supply device; an inverter which converts an output voltage of the converter to an AC voltage and applies the AC voltage to the motor; and a control unit which controls the inverter to drive the motor by switching between two or more control modes.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: September 25, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryoji Sato
  • Patent number: 10056853
    Abstract: Basic current commands of a d-axis and a q-axis are set based on a torque command of a motor. Subsequently, when the rotation speed of the motor is high, an electric angle compensation amount is set to be larger than that when the rotation speed of the motor is low, and a corrected predicted electric angle is set by adding the electric angle compensation amount to a predicted electric angle predicted from an electric angle based on a rotation position of a rotor of the motor from a rotation position detection sensor. Then, current commands of the d-axis and the q-axis are set by multiplying the basic current commands of the d-axis and the q-axis by a correction coefficient based on the corrected predicted electric angle, and an inverter is controlled using the current commands.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: August 21, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Ryoji Sato, Shogo Tanaka, Takuya Shimaji
  • Patent number: 9987947
    Abstract: A power supply apparatus of a vehicle includes: an engine and a first MG; a battery; a converter stepping up a voltage of the battery and supplying the stepped-up voltage to an inverter of the vehicle; and a control device controlling the converter in a continuous voltage step-up mode in which the converter is continuously operated and an intermittent voltage step-up mode in which the converter is intermittently operated. The control device estimates an SOC of the battery based on battery current IB flowing into and out of the battery, and forces the battery to be charged by the engine and the first MG when an estimate value of the SOC is lower than a predetermined lower limit. The control device suppresses an operation of the converter in the intermittent voltage step-up mode to a greater extent as the estimate value of the SOC is closer to the lower limit.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: June 5, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Kamatani, Suguru Kumazawa, Ryoji Sato
  • Patent number: 9991789
    Abstract: The electric motor vehicle includes a voltage conversion circuit, a primary-side smoothing capacitor, a battery, a system main relay, an inverter circuit, a secondary-side smoothing capacitor, an electric motor, a first voltage sensor, a collision sensor, and a controller. The controller is configured to adjust an operation of the voltage conversion circuit, detect primary-side voltage by using the first voltage sensor in a state that the voltage conversion circuit is operated in a case where a collision is detected by the collision sensor, and detect a state that the system main relay is off based on a change in the detected primary-side voltage.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: June 5, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shohei Oi, Ryoji Sato, Tomoko Oba
  • Publication number: 20170274894
    Abstract: With a motor in rotation, 0 is set as each of a d-axis current command and a q-axis current command, and offset learning is carried out. Then, in carrying out offset learning, a transmission is controlled such that a shift stage of the transmission falls within a low vehicle speed-side predetermined shift stage range. Thus, the rotational speed of the motor can be more reliably made high to a certain extent, and offset learning can be carried out. As a result, the accuracy of offset learning can be restrained from decreasing.
    Type: Application
    Filed: March 16, 2017
    Publication date: September 28, 2017
    Inventors: Ryoji Sato, Masayuki Baba, Shogo Tanaka, Takuya Shimaji
  • Patent number: 9744876
    Abstract: A hybrid vehicle includes a battery, a boost converter, a battery temperature sensor, a battery current sensor, a high-voltage sensor, and a control section. The control section includes an intermittent boosting operation program which stops the boost converter when a temperature of the battery is equal to or higher than a predetermined temperature and when an absolute value of a battery current is within a range of ±I0 and which restarts the boost converter when an actual boosted voltage is outside a range from VH2 to VH4, and a threshold switching program that switches the threshold range to ±I2 that is wider than the range of ±I0 and switches the range from the threshold VH2 to the threshold VH4 to a wider range from a threshold VH3 to a threshold VH5 when the battery temperature is lower than the predetermined temperature.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: August 29, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Ryoji Sato
  • Publication number: 20170229984
    Abstract: Basic current commands of a d-axis and a q-axis are set based on a torque command of a motor. Subsequently, when the rotation speed of the motor is high, an electric angle compensation amount is set to be larger than that when the rotation speed of the motor is low, and a corrected predicted electric angle is set by adding the electric angle compensation amount to a predicted electric angle predicted from an electric angle based on a rotation position of a rotor of the motor from a rotation position detection sensor. Then, current commands of the d-axis and the q-axis are set by multiplying the basic current commands of the d-axis and the q-axis by a correction coefficient based on the corrected predicted electric angle, and an inverter is controlled using the current commands.
    Type: Application
    Filed: January 26, 2017
    Publication date: August 10, 2017
    Inventors: Ryoji Sato, Shogo Tanaka, Takuya Shimaji
  • Patent number: 9694696
    Abstract: A control device controls a boost converter to be operated in one of a continuous voltage-boosting mode in which the converter is continuously operated and in an intermittent voltage-boosting mode in which the converter is intermittently operated. The control device permits the converter to be controlled in the intermittent voltage-boosting mode when an atmospheric pressure is equal to or greater than a first prescribed value, and inhibits the converter from being controlled in the intermittent voltage-boosting mode when the atmospheric pressure is less than the first prescribed value.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: July 4, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Suguru Kumazawa, Hideki Kamatani, Ryoji Sato
  • Patent number: 9688154
    Abstract: An electrically powered vehicle includes a motor generator configured to be capable of transmitting and receiving torque to and from a driving shaft coupled to a driving wheel; a DC power supply including a power storage device; and an inverter for performing bidirectional DC/AC power conversion between the DC power supply and the motor generator. The MG-ECU controls a plurality of power semiconductor switching elements to be turned on/off in accordance with a torque command value and a state value of the motor generator. When an accelerator pedal is released, the MG-ECU controls the inverter to superimpose a DC current component on an AC current of each phase in the motor generator in accordance with the state of charge of the power storage device.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: June 27, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Makoto Nakamura, Ryoji Sato, Takaya Soma
  • Patent number: 9669718
    Abstract: A power supply system includes: a first voltage converter configured to bidirectionally convert voltage between a first battery and an output line in accordance with first pulse width modulation control; a second voltage converter connected to the output line in parallel with the first voltage converter, the second voltage converter being configured to bidirectionally convert voltage between a second battery and the output line in accordance with second pulse width modulation control; and a controller configured to control the first and second voltage converters by generating first and second pulse width modulation control signals, the controller being configured to, when one or both of temperatures of the first and second batteries are lower than a predetermined temperature, change phases of the pulse width modulation control signals such that the first second pulse width modulation control signals change from a synchronous state to an asynchronous state.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: June 6, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shohei Ol, Ryoji Sato
  • Patent number: 9647547
    Abstract: The present invention is intended to discriminate between a battery voltage sensor and the input voltage sensor of a converter for abnormality, without stopping the step-up operation of the converter. A voltage conversion device is provided with a battery, a converter, a battery voltage sensor, a voltage sensor for detecting the input voltage of the converter, a current sensor for detecting a reactor current, and a control unit. The control unit determines the abnormality of the battery voltage sensor or the input voltage sensor on the basis of an estimated value of input voltage calculated based on the reactor current, the input voltage of the converter and a battery voltage, without stopping the step-up operation of the converter.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: May 9, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daigo Nobe, Ryoji Sato, Kazuhito Hayashi
  • Patent number: 9641106
    Abstract: An electric vehicle driven by a synchronous motor 21 and an induction motor 31, and braked with a first regenerative torque BT1 generated by the synchronous motor generator 21 and a second regenerative torque BT2 generated by the induction motor generator 31. The ratio of the first regenerative torque BT1 to the second regenerative torque BT2 is changed in accordance with a state of charge (SOC) of a battery 11. In this way, a switching frequency from a regenerative brake to a hydraulic brake is restricted to improve drivability when a state of charge (SOC) of the battery 11 is high.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: May 2, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takashi Ota, Ryoji Sato, Masayoshi Suhama
  • Patent number: 9623757
    Abstract: An electric power supply device for a vehicle includes an electric storage device, a boost converter, and a controller. The boost converter boosts voltage of the electric storage device and supplies the boosted voltage to an electric load of the vehicle. The controller controls the boost converter in a continuous boost mode and an intermittent boost mode. The continuous boost mode is a mode in which the boost converter is in continuous operation. The intermittent boost mode is a mode in which the boost converter is in intermittent operation. The controller more restricts a charge/discharge demand of the electric storage device such that a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the intermittent boost mode is more restrictive than a charge/discharge demand of the electric storage device at a time when the boost converter is operated in the continuous boost mode.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: April 18, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Suguru Kumazawa, Hideki Kamatani, Ryoji Sato, Masaki Okamura