Patents by Inventor Shota FUJII

Shota 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: 11142246
    Abstract: A driving support Electronic Control Unit (ECU) initializes a target trajectory calculation parameter at a start of Lane Change Assist Control (LCA), calculates, based on the target trajectory calculation parameter, a target trajectory function representing a target lateral position in accordance with an elapsed time from the start of LCA; and calculates a target control amount according to the target trajectory function. When it is determined that the own vehicle has crossed a boundary white line, the driving support ECU again initializes the target trajectory calculation parameter, and calculate the target trajectory function based on the target trajectory calculation parameter.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: October 12, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Publication number: 20210188275
    Abstract: A vehicle control device comprises a processor configured to determine a target merge location where the vehicle is to make a lane change from a merging lane to a main lane, in a merge zone on a scheduled route where the merging lane merges with the main lane, as a location that is before the location at the minimum distance to the end point of the merging lane allowing the driver to whom control of the vehicle has been handed over to operate the vehicle for the lane change, and when the vehicle has not completed the lane change upon reaching the target merge location, give the driver a first notification notifying that control of the vehicle will be switched from automatic control to manual control, by using a notifying unit that notifies the driver of information, or by using a vehicle controlling device that controls operation of the vehicle to perform a predetermined operation of the vehicle.
    Type: Application
    Filed: November 5, 2020
    Publication date: June 24, 2021
    Inventors: Takeshi MATSUMURA, Eiki KITAGAWA, Yu OKADA, Shota FUJII, Naoki NISHIMURA, Yuki MORI, Takamitsu TOYOURA
  • Patent number: 11008039
    Abstract: A driving support ECU initializes a target trajectory calculation parameter at a start of LCA; calculates, based on the target trajectory calculation parameter, a target trajectory function representing a target lateral position which is a target position of an own vehicle in a lane width direction in accordance with an elapsed time t from the start of LCA; successively calculates a target lateral movement state amount of the own vehicle based on the target trajectory function and the elapsed time t; calculates a target yaw state amount of the own vehicle based on the target lateral movement state amount and a vehicle speed; and calculates a target control amount based on the target yaw state amount and the target lateral position.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: May 18, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10953882
    Abstract: A steering assist system includes: a first sensor; a second sensor; and an electronic control unit. The electronic control unit is configured to start a lane change assist control when another vehicle obstructing a lane change is detected; detect a progress status of the lane change; stop the lane change assist control, when the first sensor detects an approaching vehicle; execute a center return assist control when the lane change assist control is stopped in a former part of the lane change; and execute a collision avoidance assist control when the lane change assist control is stopped in a latter part of the lane change.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 23, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10909855
    Abstract: A driving support apparatus for a vehicle includes a lane keeping assist control unit configured to perform a lane keeping assist control, and a lane change assist control unit configured to perform a lane change assist control. When a reliability with respect to a recognition result of lane lines is a predetermined level, the lane keeping assist control unit lowers a responsiveness of the lane keeping assist control, compared with the responsiveness of the lane keeping assist control when the reliability is a level higher than the predetermined level. When the reliability is a level lower than the predetermined level, the lane change assist control unit lowers a responsiveness of the lane change assist control, compared with the responsiveness of the lane change assist control when the reliability is the predetermined level.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: February 2, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hirohito Ide, Shota Fujii
  • Patent number: 10870446
    Abstract: A steering control device includes a driving support ECU. When white line recognition loss, which is a state in which white lines are not properly recognizable, has occurred during execution of an LCA, the driving support ECU calculates a target trajectory for returning a yaw angle to a state immediately before the start of the LCA. The driving support ECU controls a steering angle based on the calculated target trajectory. As a result, a lateral speed of an own vehicle is reduced, and thus sufficient time can be secured for handing over operation of a steering wheel to a driver from a steering assist state.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: December 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10814913
    Abstract: A driving support ECU initializes a target trajectory calculation parameter at a start of LCA; calculates, based on the target trajectory calculation parameter, a target trajectory function representing a target lateral position which is a target position of an own vehicle in a lane width direction in accordance with an elapsed time from the start of LCA; calculates a target control amount based on the target trajectory function; when a steering operation by a driver has been detected, again initializes the target trajectory calculation parameter; and recalculates the target trajectory function based on the target trajectory calculation parameter.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: October 27, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Publication number: 20200290677
    Abstract: A driving support ECU initializes a target trajectory calculation parameter at a start of LCA; calculates, based on the target trajectory calculation parameter, a target trajectory function representing a target lateral position which is a target position of an own vehicle in a lane width direction in accordance with an elapsed time from the start of LCA; calculates a target control amount based on the target trajectory function; when a steering operation by a driver has been detected, again initializes the target trajectory calculation parameter; and recalculates the target trajectory function based on the target trajectory calculation parameter.
    Type: Application
    Filed: June 2, 2020
    Publication date: September 17, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota FUJII
  • Publication number: 20200255010
    Abstract: A steering assist apparatus comprises a steering assist control means for performing a lane tracing assist control (LTA) and a lane changing assist control (LCA) and a non-holding determination means for determining whether or not a first non-holding condition that a non-holding duration time is more than or equal to a first time is satisfied and whether or not a second non-holding condition that the non-holding duration time is more than or equal to a second time shorter than the first time is satisfied. The steering assist control means raises a warning when the second non-holding condition becomes satisfied and stops the LTA when the first non-holding condition becomes satisfied while performing the LTA, and raises a waring when the second non-holding condition becomes satisfied whereas continues the LCA until a completion condition of the LCA becomes satisfied regardless of the non-holding while performing the LCA.
    Type: Application
    Filed: May 1, 2020
    Publication date: August 13, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shota FUJII, Kentaro MATSUMOTO
  • Publication number: 20200255003
    Abstract: The first yaw angle return control is started at a first start time when the first interruption condition is established. The actuator is controlled under the first yaw angle return control so that yaw angle at a first finish time becomes a value closer to yaw angle at the lane change start time compared with yaw angle at the first start time. The first finish time comes when a first control execution time passes from the first start time. The actuator is controlled under the second yaw angle return control so that yaw angle at a second finish time becomes a value closer to yaw angle at the lane change start time compared with yaw angle at the second start time. The second finish time comes when a second control execution time longer than the first control execution time passes from the second start time.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota FUJII
  • Publication number: 20200247400
    Abstract: A yaw angle return controller is configured to end first yaw angle return control at a predetermined time when a value which is calculated by adding yaw angle detected by a lane recognition device at a predetermined time and an estimated yaw angle change amount is the same as yaw angle at lane change start time under a state where the first yaw angle return control is being executed. The predetermined time comes after the first start time and before the first finish time. The estimated yaw angle change amount is calculated by multiplying the yaw rate detected by a yaw rate sensor at the predetermined time by a predetermined time period for foreseeing.
    Type: Application
    Filed: April 24, 2020
    Publication date: August 6, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota FUJII
  • Patent number: 10710497
    Abstract: A driving support ECU detects a shallow pressing operation monitoring signal of the turn signal lever is turned off (S14: Yes). When a timer value Tx representing an ON duration time period in which the shallow pressing operation monitoring signal is continued to be turned on reaches an assist request confirmation time period Tref (S19: Yes) and an LCA start condition is established (S20: Yes) after the detection of the shallow pressing operation monitoring signal, the driving support ECU starts LCA. The driving support ECU does not determines, until the LCA is completed, whether or not the shallow pressing operation monitoring signal is turned off. The driving support ECU restarts processes from S11 after the LCA is completed. Therefore, even if the shallow pressing operation is continued to be performed, the LCA is not executed further.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: July 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10676086
    Abstract: A steering assist apparatus comprises a steering assist control means for performing a lane tracing assist control (LTA) and a lane changing assist control (LCA) and a non-holding determination means for determining whether or not a first non-holding condition that a non-holding duration time is more than or equal to a first time is satisfied and whether or not a second non-holding condition that the non-holding duration time is more than or equal to a second time shorter than the first time is satisfied. The steering assist control means raises a warning when the second non-holding condition becomes satisfied and stops the LTA when the first non-holding condition becomes satisfied while performing the LTA, and raises a warning when the second non-holding condition becomes satisfied whereas continues the LCA until a completion condition of the LCA becomes satisfied regardless of the non-holding while performing the LCA.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shota Fujii, Kentaro Matsumoto
  • Patent number: 10676084
    Abstract: A yaw angle return controller is configured to end first yaw angle return control at a predetermined time when a value which is calculated by adding yaw angle detected by a lane recognition device at a predetermined time and an estimated yaw angle change amount is the same as yaw angle at lane change start time under a state where the first yaw angle return control is being executed. The predetermined time comes after the first start time and before the first finish time. The estimated yaw angle change amount is calculated by multiplying the yaw rate detected by a yaw rate sensor at the predetermined time by a predetermined time period for foreseeing.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10668920
    Abstract: The first yaw angle return control is started at a first start time when the first interruption condition is established. The actuator is controlled under the first yaw angle return control so that yaw angle at a first finish time becomes a value closer to yaw angle at the lane change start time compared with yaw angle at the first start time. The first finish time comes when a first control execution time passes from the first start time. The actuator is controlled under the second yaw angle return control so that yaw angle at a second finish time becomes a value closer to yaw angle at the lane change start time compared with yaw angle at the second start time. The second finish time comes when a second control execution time longer than the first control execution time passes from the second start time.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: June 2, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10647354
    Abstract: A steering control device includes a driving support ECU. The driving support ECU 10 is configured to execute an original lane return assist control to control a steering so as to return an own vehicle from a target lane to the original lane when a lane change assist control is stopped by detection of a first approaching vehicle in a situation where the own vehicle enters the target lane to travel in the target lane. The driving support ECU is configured to prohibit the original lane return assist control and to execute a lateral speed zero control to control the steering so as to maintain a lateral speed which is a speed in a lane width direction of the own vehicle at zero, when an original lane side vehicle is being detected.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: May 12, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10600324
    Abstract: A first limiter limits a first target steering angle correspondence value by a first steering angle correspondence value guard which defines the upper limit value of the steering angle correspondence value and is larger than a steering angle correspondence value guard at lane change time and limits a first target steering angular velocity correspondence value by a first steering angular velocity correspondence value guard which defines the upper limit value of the steering angular velocity correspondence value and is larger than a steering angular velocity correspondence value guard at lane change time. An actuator controller for first yaw angle return control which is configured to control an actuator to operate a steering wheel so that steering angle correspondence value becomes a first target steering angle correspondence value and a steering angular velocity correspondence value becomes a first target steering angular velocity correspondence value.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: March 24, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Patent number: 10589786
    Abstract: A steering assist device includes a driving support ECU. The driving support ECU is configured to determine on whether or not accelerator operation is performed during execution of a lane change assist control. The driving support ECU is configured to prohibit execution of an original lane return assist control, when the driving support ECU determines that the accelerator operation has been performed.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 17, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shota Fujii
  • Publication number: 20200070889
    Abstract: An automatic driving system that is mounted in a vehicle includes: an information acquiring device configured to acquire driving environment information indicating a driving environment of the vehicle; and a running control device configured to execute lane change control from a first lane to a second lane, and set a lane change time which is a time required for lane change The running control device is configured to set an initial value of the lane change time, determine whether a moving object having a highest degree of approach to the vehicle is present in the second lane, and change the initial value based on a relative position of the moving object with respect to the vehicle and a relative speed of the vehicle with respect to the moving object when it is determined that the moving object having the highest degree of approach is present in the second lane.
    Type: Application
    Filed: June 13, 2019
    Publication date: March 5, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroki FUKUDA, Shota FUJII, Kenichiro AOKI
  • Publication number: 20200070835
    Abstract: An autonomous driving system includes an information acquiring device configured to acquire driving environment information and a travelling control device configured to execute lane change control from a first lane to a second lane during autonomous driving based on the driving environment information. The travelling control device is configured to perform a continuation determining process of determining whether to continue the lane change control based on a combination of a progress level and an influence level when a subsequent vehicle in the second lane is detected based on the driving environment information and a stop request for execution of the lane change control is detected after execution of the lane change control has started. The progress level represents progress of the lane change control and the influence level represents a predicted degree of influence of continuing the lane change control on the subsequent vehicle.
    Type: Application
    Filed: July 3, 2019
    Publication date: March 5, 2020
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroki Fukuda, Shota Fujii