Patents by Inventor Masatoshi Fujii

Masatoshi Fujii 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: 11965591
    Abstract: A lubrication device for a helicopter including: an oil sump in which oil for lubrication is retained; a lubrication pump configured to suck the oil from the oil sump to discharge the oil; and a lubrication passage extending from the lubrication pump to a first lubrication target. The lubrication passage includes: a first supply port that supplies the oil to the first lubrication target; an oil reservoir provided upstream of the first supply port; and an opening provided upstream of the oil reservoir and above the oil reservoir. The first supply port is formed right above the first lubrication target.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: April 23, 2024
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Isao Fujii, Yuji Yamazaki, Masatoshi Matsumoto, Kenta Ogasawara
  • Publication number: 20240075745
    Abstract: A printing apparatus includes a removable member including a printing unit, a battery that drives the printing unit, a control board that controls the printing unit, and a body unit that holds the removable member, the battery, and the control board. The removable member and the battery are disposed on a straight line extending in a sub-scanning direction perpendicular to a main scanning direction of the body unit. The control board is disposed in the body unit with a side, as a facing side, of the control board being along a height direction of the printing apparatus and facing the removable member and the battery in the main scanning direction.
    Type: Application
    Filed: January 31, 2022
    Publication date: March 7, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Masatoshi ISHIDA, Tomoya FUJII, Munekazu HIRATA, Kanako ISHIGURE
  • Patent number: 11874384
    Abstract: In a locator, a data synchronization unit calculates an interpolated value for autonomous sensor data which corresponds to a time of latest GNSS data. A complex positioning unit performs complex positioning using the latest GNSS data and the interpolated value for the autonomous sensor data. An autonomous navigation positioning unit performs first autonomous navigation positioning using the interpolated value for the autonomous sensor data, and performs second autonomous navigation positioning using latest autonomous sensor data. A modified amount calculator calculates a modified amount of autonomous navigation positioning, based on a difference between a result of the complex positioning and a result of the first autonomous navigation positioning. An autonomous navigation positioning fix modification unit modifies a result of the second autonomous navigation positioning using the modified amount to calculate a current position.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: January 16, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Kido, Tadatomi Ishigami, Masatoshi Fujii, Kohei Fujimoto, Ryusuke Kinoshita
  • Publication number: 20230075672
    Abstract: A travel road determination apparatus includes a vehicle position acquisition unit and a travel road determination unit. The vehicle position acquisition unit acquires position information of a vehicle. In first determination processing, the travel road determination unit determines whether or not the vehicle that is determined to be traveling on a first-type road based on first position information of the vehicle has started traveling on a second-type road, based on second position information of the vehicle and first map data. In second determination processing, the travel road determination unit determines whether or not the vehicle that is determined to be traveling on the second-type road based on third position information of the vehicle has started traveling on the first-type road, based on fourth position information of the vehicle and the second map data.
    Type: Application
    Filed: March 18, 2020
    Publication date: March 9, 2023
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masatoshi FUJII, Mitsuo SHIMOTANI, Kentaro DAIKOKU, Keisuke INOUE
  • Patent number: 11441907
    Abstract: In a locator device, a dead reckoning part calculates a position of a subject vehicle by dead reckoning. A pseudorange smoothing part smooths a pseudorange between a GNSS satellite and a position of the subject vehicle using a carrier wave phase of the GNSS satellite. A GNSS receiver positioning error evaluation part evaluates reliability of the position of the subject vehicle calculated by the multi-GNSS receiver. A GNSS positioning part (Kalman Filter (KF) method) calculates a position of the subject vehicle from a smoothed value of the pseudorange, a positioning augmentation signal, and an orbit of the GNSS satellite. A complex positioning part (KF method) calculates an error in the dead reckoning from the position of the subject vehicle calculated by the GNSS positioning part (KF method), and corrects the position of the subject vehicle calculated by the dead reckoning part based on the error in the dead reckoning.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: September 13, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tadatomi Ishigami, Takashi Irie, Masatoshi Fujii, Ryusuke Kinoshita, Kohei Fujimoto, Masashi Kido
  • Publication number: 20220179103
    Abstract: In a locator, a data synchronization unit calculates an interpolated value for autonomous sensor data which corresponds to a time of latest GNSS data. A complex positioning unit performs complex positioning using the latest GNSS data and the interpolated value for the autonomous sensor data. An autonomous navigation positioning unit performs first autonomous navigation positioning using the interpolated value for the autonomous sensor data, and performs second autonomous navigation positioning using latest autonomous sensor data. A modified amount calculator calculates a modified amount of autonomous navigation positioning, based on a difference between a result of the complex positioning and a result of the first autonomous navigation positioning. An autonomous navigation positioning fix modification unit modifies a result of the second autonomous navigation positioning using the modified amount to calculate a current position.
    Type: Application
    Filed: May 13, 2019
    Publication date: June 9, 2022
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi KIDO, Tadatomi ISHIGAMI, Masatoshi FUJII, Kohei FUJIMOTO, Ryusuke KINOSHITA
  • Patent number: 11315781
    Abstract: A sampling period of an A/D converter is set in accordance with an ion pulse ejection operation of a collision cell of an accumulation type. Start timing of the sampling period is changed in accordance with a selected m/z of a second mass analysis unit. In addition, end timing of the sampling period may be changed in accordance with the selected m/z of the second mass analysis unit. In place of the sampling period, a data cut-out period may be changed.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: April 26, 2022
    Assignee: JEOL Ltd.
    Inventors: Masatoshi Fujii, Junkei Kou
  • Patent number: 11193782
    Abstract: A vehicle position estimation apparatus according to the present invention includes a painted line recognition result processing unit configured to calculate whether the vehicle has made a lane change and a direction of the lane change when the vehicle has made the lane change, a vehicle lateral position calculating unit configured to calculate a lane where the vehicle is in travel and a vehicle lateral position that is a lateral position of the vehicle in the lane based on whether the vehicle has made the lane change, the direction of the lane change, and a lane connection relation, and an on-map vehicle position calculating unit configured to calculate an on-map position of the vehicle on the road based on a map information, the lane where the vehicle is in travel, the vehicle lateral position, and a forward travel distance.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: December 7, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kentaro Daikoku, Yuji Igarashi, Masahiko Ikawa, Masatoshi Fujii, Takashi Irie
  • Publication number: 20210215485
    Abstract: In a locator device, a dead reckoning part calculates a position of a subject vehicle by dead reckoning. A pseudorange smoothing part smooths a pseudorange between a GNSS satellite and a position of the subject vehicle using a carrier wave phase of the GNSS satellite. A GNSS receiver positioning error evaluation part evaluates reliability of the position of the subject vehicle calculated by the multi-GNSS receiver. A GNSS positioning part (KF method) calculates a position of the subject vehicle from a smoothed value of the pseudorange, a positioning augmentation signal, and an orbit of the GNSS satellite. A complex positioning part (KF method) calculates an error in the dead reckoning from the position of the subject vehicle calculated by the GNSS positioning part (KF method), and corrects the position of the subject vehicle calculated by the dead reckoning part based on the error in the dead reckoning.
    Type: Application
    Filed: January 30, 2017
    Publication date: July 15, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadatomi ISHIGAMI, Takashi IRIE, Masatoshi FUJII, Ryusuke KINOSHITA, Kohei FUJIMOTO, Masashi KIDO
  • Publication number: 20210175065
    Abstract: A sampling period of an A/D converter is set in accordance with an ion pulse ejection operation of a collision cell of an accumulation type. Start timing of the sampling period is changed in accordance with a selected m/z of a second mass analysis unit. In addition, end timing of the sampling period may be changed in accordance with the selected m/z of the second mass analysis unit. In place of the sampling period, a data cut-out period may be changed.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 10, 2021
    Inventors: Masatoshi Fujii, Junkei Kou
  • Patent number: 10883836
    Abstract: A travel-lane estimation system includes: a GNSS receiver; a vehicle-speed calculator; an angular-velocity measurement mechanism; a subject-vehicle-position positioner calculating a vehicle's reference coordinate and reference orientation from a GNSS coordinate, and calculating time series data of vehicle's positions; a map information storage storing positional information about a division line of each lane; and a lane estimator calculating, as an optimal correction amount, an error pattern having a highest posterior probability among plural error patterns, correcting the time series data using the optimal correction amount, and comparing the corrected time series data with the division line, to estimate a vehicle's travel lane, the posterior probability calculated with the product of prior occurrence probability of the time series data by the plural error patterns and a likelihood calculated, under condition that the error pattern has occurred, based on a relative positional relationship between the correct
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 5, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kentaro Daikoku, Yuji Igarashi, Masahiko Ikawa, Masatoshi Fujii, Takashi Irie
  • Patent number: 10761215
    Abstract: A code positioning part calculates a position of a subject vehicle and a receiver clock based on an orbit of a GNSS satellite in which an error indicated by a positioning reinforcing signal is corrected and a first corrected pseudorange being a pseudorange of the GNSS satellite in which an error indicated by the positioning reinforcing signal is corrected. A receiver clock bias error correction part determines a difference between a two-point range between a position of each of a plurality of GNSS satellites and the position of the subject vehicle and the first corrected pseudorange as an unknown error, and determines a receiver clock bias error of the pseudorange based on the unknown error. A code positioning correction part recalculates the position of the subject vehicle, using a second corrected pseudorange that is obtained by correcting the first corrected pseudorange using the receiver clock bias error.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: September 1, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Masashi Kido, Tadatomi Ishigami, Takashi Irie, Masatoshi Fujii, Kohei Fujimoto, Ryusuke Kinoshita
  • Patent number: 10746551
    Abstract: A positioning apparatus according to the present invention includes: a triaxial acceleration sensor zero point calculating unit which determines whether or not the moving body is performing horizontal plane uniform linear traveling, and calculates a zero point of the triaxial accelerations when a determination is made that the moving body is performing the horizontal plane uniform linear traveling, based on at least triaxial speeds, a longitudinal acceleration, and triaxial accelerations while the moving body is traveling; an apparatus housing attachment angle calculating unit which calculates a pitch direction attachment angle and a roll direction attachment angle based on the zero point of the triaxial accelerations; a triaxial angular velocity coordinate transforming unit which coordinate-transforms the triaxial angular velocities; and a position estimating unit which estimates a current position of the moving body based on at least a yaw rate obtained from the triaxial angular velocities.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 18, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tadatomi Ishigami, Takashi Irie, Masatoshi Fujii, Kohei Fujimoto, Norihiro Nishiuma, Atsushi Mori
  • Publication number: 20200240806
    Abstract: A vehicle position estimation apparatus according to the present invention includes a painted line recognition result processing unit configured to calculate whether the vehicle has made a lane change and a direction of the lane change when the vehicle has made the lane change, a vehicle lateral position calculating unit configured to calculate a lane where the vehicle is in travel and a vehicle lateral position that is a lateral position of the vehicle in the lane based on whether the vehicle has made the lane change, the direction of the lane change, and a lane connection relation, and an on-map vehicle position calculating unit configured to calculate an on-map position of the vehicle on the road based on a map information, the lane where the vehicle is in travel, the vehicle lateral position, and a forward travel distance.
    Type: Application
    Filed: December 18, 2017
    Publication date: July 30, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kentaro DAIKOKU, Yuji IGARASHI, Masahiko IKAWA, Masatoshi FUJII, Takashi IRIE
  • Publication number: 20190120632
    Abstract: A travel-lane estimation system includes: a GNSS receiver; a vehicle-speed calculator; an angular-velocity measurement mechanism; a subject-vehicle-position positioner calculating a vehicle's reference coordinate and reference orientation from a GNSS coordinate, and calculating time series data of vehicle's positions; a map information storage storing positional information about a division line of each lane; and a lane estimator calculating, as an optimal correction amount, an error pattern having a highest posterior probability among plural error patterns, correcting the time series data using the optimal correction amount, and comparing the corrected time series data with the division line, to estimate a vehicle's travel lane, the posterior probability calculated with the product of prior occurrence probability of the time series data by the plural error patterns and a likelihood calculated, under condition that the error pattern has occurred, based on a relative positional relationship between the correct
    Type: Application
    Filed: July 5, 2016
    Publication date: April 25, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kentaro Daikoku, Yuji Igarashi, Masahiko Ikawa, Masatoshi Fujii, Takashi Irie
  • Patent number: 10267920
    Abstract: An object is to provide in a positioning device of a moving body such as a vehicle, a technique which can modify a built-in clock error of a moving body to increase accuracy of a velocity. The positioning device includes a built-in clock error estimating unit which estimates a built-in clock error of the vehicle as a built-in clock error based on a difference between a delta range and a calculated range rate, and a range rate estimating unit which estimates a vehicle stop range rate based on position and velocity of GPS satellite based on transmission signal and a vehicle position, and modifies a calculated range rate, based on the built-in clock error. Further, the positioning device includes an own vehicle velocity calculating unit which calculates own vehicle velocities in three axial directions which form an orthogonal coordinate system, based on a navigation matrix, the vehicle stop range rate and the modified calculated range rate.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: April 23, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tadatomi Ishigami, Atsushi Maeda, Masatoshi Fujii, Hirokazu Chiyonobu, Kohei Fujimoto
  • Publication number: 20190033465
    Abstract: A code positioning part calculates a position of a subject vehicle and a receiver clock based on an orbit of a GNSS satellite in which an error indicated by a positioning reinforcing signal is corrected and a first corrected pseudorange being a pseudorange of the GNSS satellite in which an error indicated by the positioning reinforcing signal is corrected. A receiver clock bias error correction part determines a difference between a two-point range between a position of each of a plurality of GNSS satellites and the position of the subject vehicle and the first corrected pseudorange as an unknown error, and determines a receiver clock bias error of the pseudorange based on the unknown error. A code positioning correction part recalculates the position of the subject vehicle, using a second corrected pseudorange that is obtained by correcting the first corrected pseudorange using the receiver clock bias error.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 31, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masashi KIDO, Tadatomi ISHIGAMI, Takashi IRIE, Masatoshi FUJII, Kohei FUJIMOTO, Ryusuke KINOSHITA
  • Publication number: 20180245924
    Abstract: A positioning apparatus according to the present invention includes: a triaxial acceleration sensor zero point calculating unit which determines whether or not the moving body is performing horizontal plane uniform linear traveling, and calculates a zero point of the triaxial accelerations when a determination is made that the moving body is performing the horizontal plane uniform linear traveling, based on at least triaxial speeds, a longitudinal acceleration, and triaxial accelerations while the moving body is traveling; an apparatus housing attachment angle calculating unit which calculates a pitch direction attachment angle and a roll direction attachment angle based on the zero point of the triaxial accelerations; a triaxial angular velocity coordinate transforming unit which coordinate-transforms the triaxial angular velocities; and a position estimating unit which estimates a current position of the moving body based on at least a yaw rate obtained from the triaxial angular velocities.
    Type: Application
    Filed: October 15, 2015
    Publication date: August 30, 2018
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tadatomi ISHIGAMI, Takashi IRIE, Masatoshi FUJII, Kohei FUJIMOTO, Norihiro NISHIUMA, Atsushi MORI
  • Publication number: 20180165525
    Abstract: In the present invention, a traveling lane on which a vehicle is traveling is estimated by a traveling lane estimator based on map information, current position information of the vehicle, and white line information on a white line that divides a road on which the vehicle travels. The traveling lane estimator estimates the traveling lane based on a traveling lane probability of each of lanes, which is obtained based on a line type of the white line, a traveling lane probability of each of the lanes, which is obtained based on whether or not a lane adjacent to the traveling lane is present, and a traveling lane probability of each of the lanes, which is obtained based on a lane on which the vehicle traveled when the traveling lane was estimated previously.
    Type: Application
    Filed: June 15, 2015
    Publication date: June 14, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuji HAMADA, Masahiko IKAWA, Masatoshi FUJII, Norihiro NISHIUMA
  • Patent number: 9864064
    Abstract: An object of the present invention is to provide a positioning device which can more reliably and frequently correct a own vehicle position earlier, reliably detect an error matching state or a straying state earlier and correct the position to a correct position. The positioning device according to the present invention includes a GPS receiver, a GPS position calculating unit which calculates pseudo distances to the GPS satellites based on the transmission signals, and calculates a re-calculated GPS position which is the own vehicle position based on the pseudo distances, and a multipath influence evaluating unit which evaluates a multipath influence on the GPS position based on a difference between the GPS position calculated by the GPS receiver and the re-calculated GPS position calculated by the GPS position calculating unit.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: January 9, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tadatomi Ishigami, Atsushi Maeda, Masatoshi Fujii, Hirokazu Chiyonobu, Kohei Fujimoto