Patents by Inventor Hiroshi Ohmura

Hiroshi Ohmura 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: 12157458
    Abstract: A controller detects partitioning lines OL and BL of a road and a road edge E based on an image taken by a camera, generates a pair of left and right virtual lines ILL and ILR that extend from the side to the front of a vehicle along the partitioning lines OL and BL, controls the steering so the vehicle travels between the left and right virtual lines ILL and ILR, moves the left virtual line ILL to a position in proximity to the road edge E and fixes the left virtual line ILL to this position, and then, moves the right virtual line ILR to a position separated from the left virtual line ILL by the width of the vehicle and fixes the right virtual line ILR to this position, and controls brakes to stop the vehicle after fixing the left and right virtual lines ILL and ILR.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: December 3, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Takashi Hamada, Yuma Nishijo, Kouichi Kojima, Yoshiyuki Yamashita, Yuta Tsuji, Hiroshi Ohmura, Takashi Goto, Shoji Harada, Kenta Tada, Kazuki Sato
  • Publication number: 20240377576
    Abstract: A plastic optical fiber suitable for reducing interfacial delamination between a clad and a coating layer. The plastic optical fiber includes: a core; a clad disposed on an outer circumference of the core and including a fluorine-containing resin; and a coating layer disposed on an outer circumference of the clad, the coating layer consisting of a material. The material has an elongation, as measured by a given test, of 0.05% or less.
    Type: Application
    Filed: March 16, 2022
    Publication date: November 14, 2024
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi OHMURA, Takashi SHIMIZU
  • Publication number: 20240329296
    Abstract: A plastic optical fiber of the present disclosure includes a core and a trench disposed on an outer circumference of the core. The core includes a first region and a second region, the first region having a refractive index n1 decreasing in a direction from a center of the core toward an outer edge of the core, the second region being positioned on an outer circumference of the first region, the second region including the outer edge of the core, the second region having a refractive index n2 being constant. The refractive index n2 of the second region is equal to or lower than the refractive index n1 of the first region, a thickness of the second region is 2 ?m or more and less than 5 ?m, and a refractive index n3 of the trench is lower than the refractive index n2 of the second region.
    Type: Application
    Filed: March 26, 2024
    Publication date: October 3, 2024
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toru Moriya, Kazuya Takayama, Hiroshi Ohmura
  • Publication number: 20240329295
    Abstract: A plastic optical fiber of the present disclosure includes: a core including a first region having a refractive index decreasing in a direction from a center of the core toward an outer edge of the core; and a trench disposed on an outer circumference of the core. When a refractive index difference between a refractive index n1 at the outer edge of the core and a refractive index n2 of the trench is defined as ?n and a thickness of the trench is defined as d (?m), a value of ?n×d is 0.010 or more and 0.06 or less.
    Type: Application
    Filed: March 26, 2024
    Publication date: October 3, 2024
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takashi Shimizu, Toru Moriya, Kazuya Takayama, Hiroshi Ohmura
  • Publication number: 20240210615
    Abstract: A plastic optical fiber includes a core and a clad disposed on an outer circumference of the core. The core includes a first resin, and the clad includes a second resin. The first resin has a first glass transition temperature Tg1 of 120° C. or higher. The second resin has a second glass transition temperature Tg2 of 120° C. or higher. When the plastic optical fiber bent once 180 degrees at 25° C. has a curvature radius R and a minimum of the curvature radius R is defined as a curvature radius at which a crack does not occur in a bent portion of the plastic optical fiber, the minimum is 5 mm or less.
    Type: Application
    Filed: March 29, 2022
    Publication date: June 27, 2024
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takashi SHIMIZU, Hiroshi OHMURA, Takeshi SAITO
  • Patent number: 11719549
    Abstract: A vehicle control apparatus is configured to execute processing to calculate a correction travel route and a control target value on the basis of a target travel route under a specified constraint condition. The vehicle control apparatus calculates the correction travel route by using an evaluation function in a manner to minimize a difference of the correction travel route from the target travel route. The evaluation function is a sum that is acquired by weighting the evaluation value at each prediction point by weight coefficients. A time interval between each adjacent pair of the prediction points is set to be increased from a near side toward a far side from the vehicle. The weight coefficients are set such that weight at the prediction point on the far side from the vehicle is less than the weight at the prediction point on the near side of the vehicle.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: August 8, 2023
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Takashi Goto, Yasuhiro Kawahara, Ryusuke Nomiyama, Akihiro Motodani
  • Publication number: 20230114706
    Abstract: According to an embodiment of the present invention, there is provided a method of producing a plastic optical fiber having a small transmission loss. The method includes subjecting the plastic optical fiber to heat treatment. The plastic optical fiber includes a core portion and a cladding portion, the core portion is formed of a perfluorinated resin and having a refractive index gradient in a radial direction thereof.
    Type: Application
    Filed: March 25, 2021
    Publication date: April 13, 2023
    Applicant: NITTO DENKO CORPORATION
    Inventors: Hiroshi Ohmura, Yasuaki Okada, Takeshi Saitou
  • Patent number: 11505186
    Abstract: A vehicle control device includes: a target traveling path setting unit that sets a target traveling path of an own vehicle; a reference position setting unit that sets a reference position of the own vehicle for specifying a position of the own vehicle with respect to the target traveling path; and a control unit that controls a steering assist amount of a steering wheel, based on a positional deviation being a deviation between the target traveling path set by the target traveling path setting unit and the reference position of the own vehicle set by the reference position setting unit. The reference position setting unit changes the reference position according to a vehicle speed.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 22, 2022
    Assignee: Mazda Motor Corporation
    Inventor: Hiroshi Ohmura
  • Patent number: 11491975
    Abstract: A vehicle control device includes an oncoming vehicle detection sensor configured to detect an oncoming vehicle that approaches an own vehicle, and a controller configured to automatically apply brakes to the own vehicle to avoid a collision with the oncoming vehicle detected by the oncoming vehicle detection sensor under a condition that the own vehicle is at least partially in an opposite lane or a planned path of the own vehicle is at least partially in the opposite lane. The controller is configured to set, between the own vehicle and the oncoming vehicle, a virtual area that moves with the oncoming vehicle and that extends in an advancing direction of the oncoming vehicle, and automatically brake the own vehicle to avoid coming into contact with the virtual area to avoid the collision between the own vehicle and the oncoming vehicle.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: November 8, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Hiroshi Ohmura
  • Patent number: 11453394
    Abstract: A control unit functionally comprises a first steering-torque application control part which commands a steering actuator of a vehicle to execute application of a steering torque determined by a first steering characteristic CH1 and a second steering-torque application control part which commands the steering actuator of the vehicle to execute application of a steering torque determined by a second steering characteristic CH2. The first steering characteristic CH1 comprises plural characteristics CH1A-CH1J which have different steering torques changing according to a vehicle speed. The characteristics CH1A-CH1J are set according to the vehicle speed such that these gradually change in a manner CH1A?CH1J as the vehicle speed becomes higher. The steering torque applied to the steering wheel is set such that the higher the vehicle speed is, the smaller the steering torque is, as shown by the characteristics CH1A-CH1J.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 27, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Rie Awane
  • Patent number: 11440539
    Abstract: A vehicle control device includes an oncoming vehicle detection sensor that detects an oncoming vehicle approaching an own vehicle; and a controller configured to automatically apply brakes to the own vehicle to avoid a collision with the oncoming vehicle, detected by the oncoming vehicle detection sensor, under a condition that the own vehicle is at least partially in an opposite lane or a planned path of the own vehicle is at least partially in the opposite lane. The controller is further configured to set, between the own vehicle and the oncoming vehicle, a virtual area that moves with the oncoming vehicle and that extends toward the own vehicle using a rear end of the oncoming vehicle as a base point, and automatically brake the own vehicle to avoid the own vehicle coming into contact with the virtual area to avoid the collision between the own vehicle and the oncoming vehicle.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: September 13, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Takashi Nakagami, Xi Chen
  • Patent number: 11396293
    Abstract: Disclosed is a driving support control device (ECU) 10 capable of controlling a vehicle 1 in accordance with any one selected from plural driving support modes by a driver. The driving support control device 10 is configured to temporally repeatedly calculate a target traveling course (R1 to R3) along which the vehicle 1 should travel, and to, in a given one (preceding vehicle following mode) of the driving support modes, execute control of causing the vehicle 1 to travel on and along the target traveling course, wherein the driving support control device 10 is operable, in a situation where a current position of the vehicle 1 deviates beyond a given distance dth laterally from the target traveling course, to, even when the driver selects the given driving support mode, prohibit transition to the given driving support mode.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: July 26, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Sahori Iimura
  • Publication number: 20220153260
    Abstract: A controller detects partitioning lines OL and BL of a road and a road edge E based on an image taken by a camera, generates a pair of left and right virtual lines ILL and ILR that extend from the side to the front of a vehicle along the partitioning lines OL and BL, controls the steering so the vehicle travels between the left and right virtual lines ILL and ILR, moves the left virtual line ILL to a position in proximity to the road edge E and fixes the left virtual line ILL to this position, and then, moves the right virtual line ILR to a position separated from the left virtual line ILL by the width of the vehicle and fixes the right virtual line ILR to this position, and controls brakes to stop the vehicle after fixing the left and right virtual lines ILL and ILR.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 19, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Takashi HAMADA, Yuma NISHIJO, Kouichi KOJIMA, Yoshiyuki YAMASHITA, Yuta TSUJI, Hiroshi OHMURA, Takashi GOTO, Shoji HARADA, Kenta TADA, Kazuki SATO
  • Patent number: 11325572
    Abstract: A vehicle control device includes a crossing vehicle detection sensor configured to detect a crossing vehicle approaching an own vehicle while the own vehicle is traveling in an intersecting lane, the intersecting lane being a lane that intersects an own vehicle lane at an intersection at a time the own vehicle approaches the intersection, the crossing vehicle being a vehicle travelling in the intersecting lane; and a controller configured to automatically brake the own vehicle to avoid a collision between the own vehicle and the crossing vehicle under a condition that the own vehicle enters the intersecting lane. The controller is configured to set, between the own vehicle and the crossing vehicle, a virtual area that moves with the crossing vehicle and that extends in an advancing direction of the crossing vehicle, and automatically brake the own vehicle to prevent the own vehicle from contacting the virtual area.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 10, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Hiroshi Ohmura
  • Patent number: 11318934
    Abstract: A vehicle control device includes an oncoming vehicle detection sensor and a controller that automatically applies brakes to avoid a collision with the oncoming vehicle, under a condition that the own vehicle is at least partially in an opposite lane or a planned path of the own vehicle is at least partially in the opposite lane. The controller sets a virtual area that moves with the oncoming vehicle and that extends in an advancing direction of the oncoming vehicle, and automatically brakes to avoid to avoid a collision. In response to the sensor detecting first and second oncoming vehicles, the controller sets first and second virtual areas, and automatically brakes the own vehicle to prevent coming into contact with the first virtual area and the second virtual area once the own vehicle traverses the opposite lane.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: May 3, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Takashi Nakagami, Xi Chen
  • Patent number: 11198469
    Abstract: A vehicle control processor and method capable of preventing departure to an off-road, to reduce driver discomfort, irritation and stress. The control processor calculates a width of a side strip between a left mark line and a road end based on information from a camera. When the width is wider than a specified width, steering torque based on first and second steering characteristics are exerted. The steering torque based on the first steering characteristic is exerted when a vehicle lateral end is located within a range from a left mark line outer end to a characteristic switching position, set in accordance with the width of the side strip between the left mark line and the road end, and the steering torque based on the second steering characteristic is exerted when the vehicle lateral end is located within a range from the characteristic switching position to the road end.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: December 14, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Shusaku Ombe, Hiroshi Ohmura, Kouji Hosoda
  • Patent number: 11186275
    Abstract: Provided is a vehicle control device capable of efficiently performing vehicle control for safe driving assistance. A vehicle control device (ECU) (10) mounted in a vehicle is configured to: detect a stopped vehicle (3) located forward of the vehicle (1) in a traveling lane of the vehicle (1); set a speed distribution area (40) which defines a distribution of an allowable upper limit value of a relative speed of the vehicle (1) with respect to the stopped vehicle (3); detect a traveling state of a vehicle traveling in an adjacent lane of the vehicle (1); and, based on the traveling state of the vehicle in the adjacent lane and the speed distribution area (40) with respect to the stopped vehicle (3), execute an avoidance control of avoiding a collision with the stopped vehicle (3).
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: November 30, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Hiroshi Ohmura
  • Patent number: 11180144
    Abstract: The driving support control device is configured to, when a preceding vehicle is detected (S24: YES), be permitted to cause a transition to the preceding vehicle following mode, in response to a manipulation made by the driver to select the preceding vehicle following mode (S27), and then control the vehicle 1 to follow the preceding vehicle, and to, when edges of a traveling road are detected even though no preceding vehicle is detected (S25: YES), be permitted to cause the transition to the preceding vehicle following mode, in response to the manipulation made by the driver to select the preceding vehicle following mode (S26), and then control the vehicle 1 to travel on and along a given target traveling course set based on the edges of the traveling road.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: November 23, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Hiroshi Ohmura, Sahori Iimura
  • Patent number: 11180141
    Abstract: Disclosed is a vehicle control system (ECU 10) provided in a vehicle (1) is configured be operable to: detect a preceding vehicle (3) ahead of the vehicle (1), and set, in at least a part of a region around the preceding vehicle (3), a speed distribution zone (40, 50) defining a distribution zone of an allowable upper limit (Vlim) of a relative speed of the vehicle (1) with respect to the preceding vehicle (3) in a traveling direction of the vehicle (1); and, when the vehicle (1) is within the speed distribution zone (40, 50), to execute traveling control of preventing the relative speed of the vehicle (1) with respect to the preceding vehicle (3) from exceeding the allowable upper limit Vlim, wherein, when the preceding vehicle (3) is located on a curved road (5), the speed distribution zone (50) is set such that, in a lateral region of the speed distribution zone, a constant relative speed line (d, e, f) connecting plural points each having a same value of the allowable upper limit (Vlim) is curved in confo
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: November 23, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Hiroshi Ohmura
  • Patent number: 11173902
    Abstract: A vehicle control device (ECU) 10 is configured to, when there is an obstacle 3 in a lane 7, execute traveling course correction processing (S15) of setting a speed distribution zone 40 defining a distribution of an allowable upper limit Vlim of a relative speed of the vehicle 1 with respect to the obstacle 3, and calculate a corrected target traveling course Rc by correcting a target traveling course R so as to prevent the relative speed of the vehicle 1 from exceeding the limit Vlim and enable the vehicle 1 to avoid the obstacle 3. The traveling course correction processing includes restriction processing (S27) of calculating the corrected target traveling course (restricted target travel courses Rc1_r through Rc3_r) such that a lateral avoidance distance (L2_r, L3_r) thereof is restricted to be smaller when a border line of the lane 7 is not detected.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: November 16, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventor: Hiroshi Ohmura