Patents by Inventor Masashi Imasaka
Masashi Imasaka 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).
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Patent number: 10209159Abstract: A displacement detecting device for a structural object is capable of accurately measuring displacement of the structural object. The displacement detecting device includes first and second attitude data calculators, a data extractor, and a displacement calculator. The first attitude data calculator calculates attitude data at a first position by using received positioning signals, and calculates a calculated time point of the attitude data of the first position based on a time of a positioning system. The second attitude data calculator calculates attitude data at a second position by using received positioning signals, and calculates a calculated time point of the attitude data of the second position based on the time of the positioning system. The displacement calculator calculates a displacement amount and a displacement direction of the structural object by using a difference between the attitude data of the first and second positions calculated at the same time point.Type: GrantFiled: January 20, 2015Date of Patent: February 19, 2019Assignee: Furuno Electric Co., Ltd.Inventors: Naomi Fujisawa, Hiraku Nakamura, Masashi Imasaka, Tatsuya Sonomoto
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Patent number: 10183733Abstract: The purpose is to provide a program, method and device for controlling a movable body (e.g., single-propeller single-rudder ship) to move the movable body while keeping it orientated in a given direction. A controlling module may cause the movable body to stay at a fixed point position by controlling a thrust generator and a moving direction adjustor to orient the movable body to a direction of a disturbance estimated by a disturbance direction estimating module so that the movable body is not drifted by the disturbance. Every time the changing module sequentially changes the fixed point position, the controlling module may move the movable body to the changed fixed point position. Thus, the control device of the movable body of this disclosure may sequentially move the movable body while keeping it oriented to the direction of the disturbance.Type: GrantFiled: November 26, 2015Date of Patent: January 22, 2019Assignee: FURUNO ELECTRIC CO., LTD.Inventors: Kazuya Kishimoto, Hitoshi Maeno, Masashi Imasaka
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Patent number: 10137972Abstract: To easily grasp a relationship of parameter values which influence a log velocity of a ship, with the log velocity of the ship caused by the parameters, a ship characteristic estimating device is provided, which includes a data outputter configured to output a plurality of parameter data respectively including rotational speed data of a propeller of a ship, and wind velocity vector data of wind force that may act on the ship, and an estimator configured to receive the plurality of parameter data outputted from the data outputter, estimate values corresponding to the respective parameter data to be log velocity vectors of the ship, and output them as first output values. The rotational speed data are same as each other and the wind velocity vector data are different from each other.Type: GrantFiled: July 1, 2015Date of Patent: November 27, 2018Assignee: Furuno Electric Co., Ltd.Inventors: Chizu Kawasaki, Masashi Imasaka, Hitoshi Maeno
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Patent number: 10000270Abstract: A moving body control device includes a moving body direction sensor, a position sensor, and processing circuitry. The processing circuitry estimates a direction of disturbance. The processing circuitry sets a target position and a starting position. The processing circuitry controls a propulsion generator and a movement direction adjuster such that a heading direction sensed by the moving body direction sensor is opposite to the direction of the disturbance estimated by the processing circuitry, and when the moving body has been drifted at least a specific distance from the target position, the moving body returns to the starting position, and the heading direction at the starting position is opposite to the direction of the disturbance. The processing circuitry changes the starting position based on a distance between the target position and a position of the moving body sensed by the position sensor.Type: GrantFiled: November 26, 2015Date of Patent: June 19, 2018Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Kazuya Kishimoto, Hitoshi Maeno, Masashi Imasaka
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Patent number: 9950777Abstract: A vehicle control device is provided. The device includes a target bearing calculating module configured to calculate a target bearing of a vehicle based on a direction of a disturbance, a stern bearing calculating module configured to calculate a stern bearing, and a rudder mechanism drive signal determining module configured to determine a rudder angle command so that the stern bearing approaches the target bearing, and determine a rudder mechanism drive signal based on the rudder angle command.Type: GrantFiled: February 5, 2016Date of Patent: April 24, 2018Assignee: Furuno Electric Co., Ltd.Inventors: Kazuya Kishimoto, Hitoshi Maeno, Masashi Imasaka, Yuya Takashima, Chizu Kawasaki
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Publication number: 20180015994Abstract: The purpose is to provide a program, method and device for controlling a movable body (e.g., single-propeller single-rudder ship) to move the movable body while keeping it orientated in a given direction. A controlling module may cause the movable body to stay at a fixed point position by controlling a thrust generator and a moving direction adjustor to orient the movable body to a direction of a disturbance estimated by a disturbance direction estimating module so that the movable body is not drifted by the disturbance. Every time the changing module sequentially changes the fixed point position, the controlling module may move the movable body to the changed fixed point position. Thus, the control device of the movable body of this disclosure may sequentially move the movable body while keeping it oriented to the direction of the disturbance.Type: ApplicationFiled: November 26, 2015Publication date: January 18, 2018Inventors: Kazuya KISHIMOTO, Hitoshi MAENO, Masashi IMASAKA
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Publication number: 20170349258Abstract: A moving body control device includes a moving body direction sensor, a position sensor, and processing circuitry. The processing circuitry estimates a direction of disturbance. The processing circuitry sets a target position and a starting position. The processing circuitry controls a propulsion generator and a movement direction adjuster such that a heading direction sensed by the moving body direction sensor is opposite to the direction of the disturbance estimated by the processing circuitry, and when the moving body has been drifted at least a specific distance from the target position, the moving body returns to the starting position, and the heading direction at the starting position is opposite to the direction of the disturbance. The processing circuitry changes the starting position based on a distance between the target position and a position of the moving body sensed by the position sensor.Type: ApplicationFiled: November 26, 2015Publication date: December 7, 2017Inventors: Kazuya KISHIMOTO, Hitoshi MAENO, Masashi IMASAKA
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Publication number: 20170233051Abstract: To easily grasp a relationship of parameter values which influence a log velocity of a ship, with the log velocity of the ship caused by the parameters, a ship characteristic estimating device is provided, which includes a data outputter configured to output a plurality of parameter data respectively including rotational speed data of a propeller of a ship, and wind velocity vector data of wind force that may act on the ship, and an estimator configured to receive the plurality of parameter data outputted from the data outputter, estimate values corresponding to the respective parameter data to be log velocity vectors of the ship, and output them as first output values. The rotational speed data are same as each other and the wind velocity vector data are different from each other.Type: ApplicationFiled: July 1, 2015Publication date: August 17, 2017Inventors: Chizu Kawasaki, Masashi Imasaka, Hitoshi Maeno
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Publication number: 20170059445Abstract: A displacement detecting device for a structural object is capable of accurately measuring displacement of the structural object. The displacement detecting device includes first and second attitude data calculators, a data extractor, and a displacement calculator. The first attitude data calculator calculates attitude data at a first position by using received positioning signals, and calculates a calculated time point of the attitude data of the first position based on a time of a positioning system. The second attitude data calculator calculates attitude data at a second position by using received positioning signals, and calculates a calculated time point of the attitude data of the second position based on the time of the positioning system. The displacement calculator calculates a displacement amount and a displacement direction of the structural object by using a difference between the attitude data of the first and second positions calculated at the same time point.Type: ApplicationFiled: January 20, 2015Publication date: March 2, 2017Inventors: Naomi Fujisawa, Hiraku Nakamura, Masashi Imasaka, Tatsuya Sonomoto
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Publication number: 20160229511Abstract: A vehicle control device is provided. The device includes a target bearing calculating module configured to calculate a target bearing of a vehicle based on a direction of a disturbance, a stern bearing calculating module configured to calculate a stern bearing, and a rudder mechanism drive signal determining module configured to determine a rudder angle command so that the stern bearing approaches the target bearing, and determine a rudder mechanism drive signal based on the rudder angle command.Type: ApplicationFiled: February 5, 2016Publication date: August 11, 2016Inventors: Kazuya Kishimoto, Hitoshi Maeno, Masashi Imasaka, Yuya Takashima, Chizu Kawasaki
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Patent number: 9198408Abstract: This disclosure provides a moving body display device, which includes a position calculating module for acquiring a positioning signal of a target moving body and calculating a position of the moving body, a behavior calculating module for calculating a positional change of the moving body based on the positioning signal, and a position storage module for storing a position where the positional change is detected when the positional change that satisfies a determination condition set is detected.Type: GrantFiled: September 30, 2010Date of Patent: December 1, 2015Assignee: FURUNO ELECTRIC COMPANY LIMITEDInventors: Masashi Imasaka, Eisuke Sekine
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Publication number: 20130286022Abstract: An information display device includes a display unit for displaying, on a display screen, a first range and a second range having a display reference position same as that of the first range and being adjacent to the first range in a display area. The device also includes a controller for setting different scales for the first range and the second range and for performing a control to display perimeter information of the device in the display area having the first and second ranges to correspond to a position of the perimeter information.Type: ApplicationFiled: April 26, 2013Publication date: October 31, 2013Applicant: Furuno Electric Co., Ltd.Inventors: Yugo Kubota, Hitoshi Maeno, Masashi Imasaka
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Publication number: 20110082644Abstract: This disclosure provides a moving body display device, which includes a position calculating module for acquiring a positioning signal of a target moving body and calculating a position of the moving body, a behavior calculating module for calculating a positional change of the moving body based on the positioning signal, and a position storage module for storing a position where the positional change is detected when the positional change that satisfies a determination condition set is detected.Type: ApplicationFiled: September 30, 2010Publication date: April 7, 2011Applicant: Furuno Electric Co., Ltd.Inventors: Masashi Imasaka, Eisuke Sekine
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Patent number: 5582566Abstract: A range-finding system for measuring a target distance from a point of measurement to a target object, comprising a slave unit for calculating and indicating the target distance based on a waiting time from transmission of an interrogation signal to reception of a response signal and a master unit placed at a certain correction distance from the target object for transmitting the response signal when a delay time corresponding to the correction distance has elapsed from reception of the interrogation signal.Type: GrantFiled: February 23, 1995Date of Patent: December 10, 1996Assignee: Furuno Electric Co., Ltd.Inventors: Masashi Imasaka, Toshiyuki Shimizu