Patents by Inventor Masashi Kido
Masashi Kido 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: 11874384Abstract: 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: GrantFiled: May 13, 2019Date of Patent: January 16, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masashi Kido, Tadatomi Ishigami, Masatoshi Fujii, Kohei Fujimoto, Ryusuke Kinoshita
-
Patent number: 11441907Abstract: 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: GrantFiled: January 30, 2017Date of Patent: September 13, 2022Assignee: Mitsubishi Electric CorporationInventors: Tadatomi Ishigami, Takashi Irie, Masatoshi Fujii, Ryusuke Kinoshita, Kohei Fujimoto, Masashi Kido
-
Publication number: 20220179103Abstract: 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: ApplicationFiled: May 13, 2019Publication date: June 9, 2022Applicant: Mitsubishi Electric CorporationInventors: Masashi KIDO, Tadatomi ISHIGAMI, Masatoshi FUJII, Kohei FUJIMOTO, Ryusuke KINOSHITA
-
Publication number: 20210215485Abstract: 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: ApplicationFiled: January 30, 2017Publication date: July 15, 2021Applicant: Mitsubishi Electric CorporationInventors: Tadatomi ISHIGAMI, Takashi IRIE, Masatoshi FUJII, Ryusuke KINOSHITA, Kohei FUJIMOTO, Masashi KIDO
-
Patent number: 10761215Abstract: 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: GrantFiled: March 3, 2017Date of Patent: September 1, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masashi Kido, Tadatomi Ishigami, Takashi Irie, Masatoshi Fujii, Kohei Fujimoto, Ryusuke Kinoshita
-
Publication number: 20190033465Abstract: 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: ApplicationFiled: March 3, 2017Publication date: January 31, 2019Applicant: Mitsubishi Electric CorporationInventors: Masashi KIDO, Tadatomi ISHIGAMI, Takashi IRIE, Masatoshi FUJII, Kohei FUJIMOTO, Ryusuke KINOSHITA
-
Patent number: D696664Type: GrantFiled: April 18, 2013Date of Patent: December 31, 2013Assignee: Sharp Kabushiki KaishaInventors: Katsuhiro Iida, Yasutaka Shimamoto, Masashi Kido