Patents by Inventor Masayasu Shimakage
Masayasu Shimakage 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: 10688995Abstract: In a travel control method for a vehicle in which a certain target inter-vehicle distance is set from among a plurality of settable target inter-vehicle distances and a subject vehicle is controlled to follow, in an automated or autonomous manner, a traveling trajectory of a preceding vehicle traveling ahead of the subject vehicle, when a trajectory-following travel mode for following the traveling trajectory of the preceding vehicle in the automated or autonomous manner transitions from an OFF state to an ON state, the target inter-vehicle distance between the subject vehicle and the preceding vehicle is set to a relatively small value from among the settable values.Type: GrantFiled: September 21, 2016Date of Patent: June 23, 2020Assignee: Nissan Motor Co., Ltd.Inventor: Masayasu Shimakage
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Patent number: 10661803Abstract: During automated or autonomous travel control of a subject vehicle, when a road section including at least one of a curve and a narrow road is present ahead of the subject vehicle and another vehicle is traveling in an adjacent lane to the traveling lane for the subject vehicle, inter-vehicle distance control is executed in which the subject vehicle is controlled to travel with an inter-vehicle distance that is set such that the subject vehicle and the other vehicle do not travel side by side when the subject vehicle travels in the road section.Type: GrantFiled: September 9, 2016Date of Patent: May 26, 2020Assignee: Nissan Motor Co., Ltd.Inventor: Masayasu Shimakage
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Publication number: 20190359215Abstract: During automated or autonomous travel control of a subject vehicle, when a road section including at least one of a curve and a narrow road is present ahead of the subject vehicle and another vehicle is traveling in an adjacent lane to the traveling lane for the subject vehicle, inter-vehicle distance control is executed in which the subject vehicle is controlled to travel with an inter-vehicle distance that is set such that the subject vehicle and the other vehicle do not travel side by side when the subject vehicle travels in the road section.Type: ApplicationFiled: September 9, 2016Publication date: November 28, 2019Inventor: Masayasu Shimakage
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Patent number: 10474158Abstract: A travel control method for a vehicle detects a target trajectory along which a subject vehicle should travel and controls the subject vehicle to travel in an autonomous manner along the detected target trajectory. This method includes provisionally setting a forward gaze point distance from the subject vehicle to a forward gaze point, estimating a traveling trajectory in which the subject vehicle coincides with the target trajectory at the forward gaze point, detecting a maximum value of a lateral displacement between the estimated traveling trajectory and the target trajectory during travel from a current position of the subject vehicle to the forward gaze point, and definitely setting the forward gaze point distance when the maximum value of the lateral displacement is a predetermined value or less as an actual forward gaze point distance and controlling the subject vehicle to travel on the basis of the definitely-set forward gaze point distance.Type: GrantFiled: September 9, 2016Date of Patent: November 12, 2019Assignee: Nissan Motor Co., Ltd.Inventor: Masayasu Shimakage
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Publication number: 20190227563Abstract: A travel control method for a vehicle detects a target trajectory along which a subject vehicle should travel and controls the subject vehicle to travel in an autonomous manner along the detected target trajectory. This method includes provisionally setting a forward gaze point distance from the subject vehicle to a forward gaze point, estimating a traveling trajectory in which the subject vehicle coincides with the target trajectory at the forward gaze point, detecting a maximum value of a lateral displacement between the estimated traveling trajectory and the target trajectory during travel from a current position of the subject vehicle to the forward gaze point, and definitely setting the forward gaze point distance when the maximum value of the lateral displacement is a predetermined value or less as an actual forward gaze point distance and controlling the subject vehicle to travel on the basis of the definitely-set forward gaze point distance.Type: ApplicationFiled: September 9, 2016Publication date: July 25, 2019Applicant: Nissan Motor Co., Ltd.Inventor: Masayasu SHIMAKAGE
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Publication number: 20190202459Abstract: In a travel control method for a vehicle in which a certain target inter-vehicle distance is set from among a plurality of settable target inter-vehicle distances and a subject vehicle is controlled to follow, in an automated or autonomous manner, a traveling trajectory of a preceding vehicle traveling ahead of the subject vehicle, when a trajectory-following travel mode for following the traveling trajectory of the preceding vehicle in the automated or autonomous manner transitions from an OFF state to an ON state, the target inter-vehicle distance between the subject vehicle and the preceding vehicle is set to a relatively small value from among the settable values.Type: ApplicationFiled: September 21, 2016Publication date: July 4, 2019Inventor: Masayasu Shimakage
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Publication number: 20150266508Abstract: A vehicle travel assistance device for setting a target travel position set apart by a forward watch point distance in front of a host vehicle on a travel path and assisting the travel of the host vehicle so that the host vehicle travels through the set target travel position, the vehicle travel assistance device including an attitude determining unit for determining the orientation of the host vehicle in relation to the travel path, and a front watch point distance setting unit that, when the host vehicle is oriented outwards with respect to the travel path, sets a forward watch point distance obtained by reducing a forward watch point distance base value so as to be smaller than when the orientation of the host vehicle is parallel to the travel path.Type: ApplicationFiled: October 25, 2012Publication date: September 24, 2015Applicant: Nissan Motor Co., Ltd.Inventors: Yuta Yoshihata, Masayasu Shimakage
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Patent number: 7778759Abstract: A lane deviation avoidance system is arranged to execute a lane deviation avoidance control of controlling a vehicle behavior of the host vehicle so as to avoid the host vehicle from deviating from a traveling lane when the lane deviation tendency is detected, to suppress the driving force when the lane deviation tendency is detected, and to set a controlled variable of the lane deviation avoidance control according to a degree of the suppression of the driving force.Type: GrantFiled: February 4, 2005Date of Patent: August 17, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Satoshi Tange, Genpei Naito, Shinji Matsumoto, Masayasu Shimakage, Hidekazu Nakajima
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Patent number: 7698032Abstract: An automotive lane deviation prevention (LDP) apparatus includes a control unit detecting whether a host vehicle is in a specific state where the host vehicle is traveling on road-surface irregularities formed on or close to a lane marking line. The control unit actively decelerates the host vehicle when the host vehicle is in the specific state where the host vehicle is traveling on the road-surface irregularities.Type: GrantFiled: December 2, 2004Date of Patent: April 13, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Shinji Matsumoto, Satoshi Tange, Masayasu Shimakage, Hiroyuki Yoshizawa
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Patent number: 7603215Abstract: In lane keep control apparatus and method for an automotive vehicle, a deviation tendency detecting section detects whether the vehicle has a tendency of a deviation from a traveling traffic lane and a deviation avoidance controlling section performs a control for the vehicle to travel on a road surface which is parallel to the traveling traffic lane when the deviation tendency detecting section detects that the vehicle has the tendency of the deviation from the traveling traffic lane and, thereafter, performs a control to prevent a yaw angle of the vehicle with respect to the traveling traffic lane from increasing in a direction in which the tendency of the deviation becomes large.Type: GrantFiled: December 2, 2004Date of Patent: October 13, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Shinji Matsumoto, Satoshi Tange, Masayasu Shimakage
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Patent number: 7117076Abstract: In lane keep control apparatus and method for an automotive vehicle, a traveling state of the vehicle is detected, a determination is made on whether the vehicle has a tendency of a deviation from the traveling traffic lane according to the detected traveling state, a deviation avoidance control is executed for the vehicle in a direction to avoid the deviation according to the traveling state, steering angles before and after a start of the deviation avoidance control are detected, and a controlled variable of the deviation avoidance control is detected on the basis of a deviation between a steering angle before the start of deviation avoidance control and that after the start of deviation avoidance control when a determination is made that the vehicle has the tendency of the deviation.Type: GrantFiled: November 8, 2004Date of Patent: October 3, 2006Assignee: Nissan Motor Co., Ltd.Inventors: Masayasu Shimakage, Shinji Matsumoto, Satoshi Tange, Genpei Naito
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Patent number: 7106886Abstract: In road white line recognition apparatus and method, a road extended in a forward direction of a vehicle is photographed through a photographing device, a deflection luminance information when a luminance information of an image photographed by the photographing device is represented by a luminance information that a surface of the road naturally has and the deflection luminance information from which the luminance information that the road surface naturally has is excluded is detected on the basis of an approximation function obtained by approximating the luminance information of the photographed image to a horizontal direction of the photographed image, a normalized luminance information is detected by removing the deflection luminance information from the luminance information of the photographed image, and a road white line is detected on the basis of the normalized luminance information.Type: GrantFiled: November 6, 2002Date of Patent: September 12, 2006Assignee: Nissan Motor Co., Ltd.Inventor: Masayasu Shimakage
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Patent number: 7091838Abstract: A lane deviation alarm system is comprised of a forward-observed-point calculating section that calculates a forward observed point by multiplying a vehicle speed of a host vehicle and an anticipated deviation time; a forward-observed-point lateral-displacement calculating section that calculates a lateral displacement at the forward-observed-point, on the basis of a yaw angle and the forward-observed-point; a lane deviation tendency determining section that determines whether the host vehicle is in a lane deviation tendency, on the basis of the forward-observed-point lateral-displacement; and a criteria changing section that changes a criteria for determining a lane deviation tendency of the host vehicle, on the basis of a detecting condition of the lane defining line.Type: GrantFiled: March 2, 2004Date of Patent: August 15, 2006Assignee: Nissan Motor Co., Ltd.Inventor: Masayasu Shimakage
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Patent number: 6970777Abstract: In an automotive lane deviation prevention (LDP) apparatus capable of executing LDP control by which a host vehicle is avoided from deviating from a driving lane, a control unit includes an LDP control allotted amount calculation section that calculates, responsively to a host vehicle's turning state, a steering-control allotted amount for LDP control and a braking-force-control allotted amount for LDP control, in presence of the host vehicle's lane-deviation tendency from the driving lane. In order to avoid the host vehicle's lane-deviation tendency, steering torque is controlled responsively to a steering-torque-control controlled variable determined based on the steering-control allotted amount, whereas braking forces applied to respective road wheels are controlled responsively to braking-force-control controlled variables determined based on the braking-force-control allotted amount.Type: GrantFiled: November 23, 2004Date of Patent: November 29, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Satoshi Tange, Shinji Matsumoto, Masayasu Shimakage
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Publication number: 20050177308Abstract: A lane deviation avoidance system is arranged to execute a lane deviation avoidance control of controlling a vehicle behavior of the host vehicle so as to avoid the host vehicle from deviating from a traveling lane when the lane deviation tendency is detected, to suppress the driving force when the lane deviation tendency is detected, and to set a controlled variable of the lane deviation avoidance control according to a degree of the suppression of the driving force.Type: ApplicationFiled: February 4, 2005Publication date: August 11, 2005Inventors: Satoshi Tange, Genpei Naito, Shinji Matsumoto, Masayasu Shimakage, Hidekazu Nakajima
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Publication number: 20050125125Abstract: In lane keep control apparatus and method for an automotive vehicle, a deviation tendency detecting section detects whether the vehicle has a tendency of a deviation from a traveling traffic lane and a deviation avoidance controlling section performs a control for the vehicle to travel on a road surface which is parallel to the traveling traffic lane when the deviation tendency detecting section detects that the vehicle has the tendency of the deviation from the traveling traffic lane and, thereafter, performs a control to prevent a yaw angle of the vehicle with respect to the traveling traffic lane from increasing in a direction in which the tendency of the deviation becomes large.Type: ApplicationFiled: December 2, 2004Publication date: June 9, 2005Inventors: Shinji Matsumoto, Satoshi Tange, Masayasu Shimakage
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Publication number: 20050125153Abstract: An automotive lane deviation prevention (LDP) apparatus includes a control unit detecting whether a host vehicle is in a specific state where the host vehicle is traveling on road-surface irregularities formed on or close to a lane marking line. The control unit actively decelerates the host vehicle when the host vehicle is in the specific state where the host vehicle is traveling on the road-surface irregularities.Type: ApplicationFiled: December 2, 2004Publication date: June 9, 2005Inventors: Shinji Matsumoto, Satoshi Tange, Masayasu Shimakage, Hiroyuki Yoshizawa
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Publication number: 20050113999Abstract: In an automotive lane deviation prevention (LDP) apparatus capable of executing LDP control by which a host vehicle is avoided from deviating from a driving lane, a control unit includes an LDP control allotted amount calculation section that calculates, responsively to a host vehicle's turning state, a steering-control allotted amount for LDP control and a braking-force-control allotted amount for LDP control, in presence of the host vehicle's lane-deviation tendency from the driving lane. In order to avoid the host vehicle's lane-deviation tendency, steering torque is controlled responsively to a steering-torque-control controlled variable determined based on the steering-control allotted amount, whereas braking forces applied to respective road wheels are controlled responsively to braking-force-control controlled variables determined based on the braking-force-control allotted amount.Type: ApplicationFiled: November 23, 2004Publication date: May 26, 2005Inventors: Satoshi Tange, Shinji Matsumoto, Masayasu Shimakage
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Publication number: 20050107931Abstract: In lane keep control apparatus and method for an automotive vehicle, a traveling state of the vehicle is detected, a determination is made on whether the vehicle has a tendency of a deviation from the traveling traffic lane according to the detected traveling state, a deviation avoidance control is executed for the vehicle in a direction to avoid the deviation according to the traveling state, steering angles before and after a start of the deviation avoidance control are detected, and a controlled variable of the deviation avoidance control is detected on the basis of a deviation between a steering angle before the start of deviation avoidance control and that after the start of deviation avoidance control when a determination is made that the vehicle has the tendency of the deviation.Type: ApplicationFiled: November 8, 2004Publication date: May 19, 2005Inventors: Masayasu Shimakage, Shinji Matsumoto, Satoshi Tange, Genpei Naito
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Publication number: 20040183663Abstract: A lane deviation alarm system is comprised of a forward-observed-point calculating section that calculates a forward observed point by multiplying a vehicle speed of a host vehicle and an anticipated deviation time; a forward-observed-point lateral-displacement calculating section that calculates a lateral displacement at the forward-observed-point, on the basis of a yaw angle and the forward-observed-point; a lane deviation tendency determining section that determines whether the host vehicle is in a lane deviation tendency, on the basis of the forward-observed-point lateral-displacement; and a criteria changing section that changes a criteria for determining a lane deviation tendency of the host vehicle, on the basis of a detecting condition of the lane defining line.Type: ApplicationFiled: March 2, 2004Publication date: September 23, 2004Applicant: NISSAN MOTOR CO., LTD.Inventor: Masayasu Shimakage