Patents by Inventor Hikaru Kumagai

Hikaru Kumagai 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: 11845435
    Abstract: A driving assistance device includes a forward recognizer configured to recognize a forward situation of a vehicle, a brake controller configured to perform brake control, and a determiner configured to determine execution of the brake control and drive control based on target data obtained by the forward recognizer and/or from map information. The brake controller performs the brake control to stop the vehicle at a position before a stop line of a road surface, based on a recognition result from the forward recognizer. When the vehicle stops and the forward situation is determined to be safe the determiner slowly drives the vehicle to another position before a crossing road edge where the road on which the vehicle drives intersects with another road. When the vehicle is at the other position and the forward situation is determined to be safe, the determiner slowly drives the vehicle from the other position by a predetermined distance.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: December 19, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Takuro Yatagai, Hikaru Kumagai
  • Patent number: 11458936
    Abstract: A drive assist apparatus includes a detector and a traveling controller. The detector detects an operation target of automatic emergency braking of a vehicle. The traveling controller includes a calculator and a determiner, and controls the automatic emergency braking on the basis of a result of the detection performed by the detector. The calculator calculates each of a target deceleration rate and a variation rate. The target deceleration rate is a target value of a deceleration rate of the automatic emergency braking. The variation rate is a rate of variation in the deceleration rate required for the deceleration rate of the automatic emergency braking to reach the target deceleration rate. The determiner determines a contact risk of the vehicle with the operation target on the basis of the target deceleration rate. The calculator increases the variation rate when the contact risk is determined by the determiner as being relatively high.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: October 4, 2022
    Assignee: SUBARU CORPORATION
    Inventors: Hikaru Kumagai, Zhaofei Dong
  • Patent number: 11338800
    Abstract: A vehicle control apparatus includes a time-to-collision acquisition unit that acquires time to collision that is a time period until a time of collision of an own vehicle with a front obstacle, an overlap rate acquisition unit that acquires an overlap rate indicating a relative positional relationship between the own vehicle and the front obstacle in a lateral direction perpendicular to a traveling direction of the own vehicle, a determination unit that performs execution determination of automatic braking control of the own vehicle, on the basis of the time to collision and the overlap rate, and that, when the overlap rate is increasing by the front obstacle approaching the own vehicle in the lateral direction, determines start timing of the automatic braking control as earlier timing than when the overlap rate is not increasing, and an automatic controller that executes the automatic braking control at the start timing.
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: May 24, 2022
    Assignee: SUBARU CORPORATION
    Inventor: Hikaru Kumagai
  • Publication number: 20210339746
    Abstract: A driving assistance device includes a forward recognizer configured to recognize a forward situation of a vehicle, a brake controller configured to perform brake control, and a determiner configured to determine execution of the brake control and drive control based on target data obtained by the forward recognizer and/or from map information. The brake controller performs the brake control to stop the vehicle at a position before a stop line of a road surface, based on a recognition result from the forward recognizer. When the vehicle stops and the forward situation is determined to be safe the determiner slowly drives the vehicle to another position before a crossing road edge where the road on which the vehicle drives intersects with another road. When the vehicle is at the other position and the forward situation is determined to be safe, the determiner slowly drives the vehicle from the other position by a predetermined distance.
    Type: Application
    Filed: April 5, 2021
    Publication date: November 4, 2021
    Inventors: Takuro YATAGAI, Hikaru KUMAGAI
  • Publication number: 20200391733
    Abstract: A vehicle control apparatus includes a time-to-collision acquisition unit that acquires time to collision that is a time period until a time of collision of an own vehicle with a front obstacle, an overlap rate acquisition unit that acquires an overlap rate indicating a relative positional relationship between the own vehicle and the front obstacle in a lateral direction perpendicular to a traveling direction of the own vehicle, a determination unit that performs execution determination of automatic braking control of the own vehicle, on the basis of the time to collision and the overlap rate, and that, when the overlap rate is increasing by the front obstacle approaching the own vehicle in the lateral direction, determines start timing of the automatic braking control as earlier timing than when the overlap rate is not increasing, and an automatic controller that executes the automatic braking control at the start timing.
    Type: Application
    Filed: April 7, 2020
    Publication date: December 17, 2020
    Inventor: Hikaru KUMAGAI
  • Publication number: 20190023241
    Abstract: A drive assist apparatus includes a detector and a traveling controller. The detector detects an operation target of automatic emergency braking of a vehicle. The traveling controller includes a calculator and a determiner, and controls the automatic emergency braking on the basis of a result of the detection performed by the detector. The calculator calculates each of a target deceleration rate and a variation rate. The target deceleration rate is a target value of a deceleration rate of the automatic emergency braking. The variation rate is a rate of variation in the deceleration rate required for the deceleration rate of the automatic emergency braking to reach the target deceleration rate. The determiner determines a contact risk of the vehicle with the operation target on the basis of the target deceleration rate. The calculator increases the variation rate when the contact risk is determined by the determiner as being relatively high.
    Type: Application
    Filed: May 1, 2018
    Publication date: January 24, 2019
    Inventors: Hikaru KUMAGAI, Zhaofei DONG
  • Patent number: 9319294
    Abstract: Provided is a network apparatus that has a function of receiving a wake-up instruction from a terminal apparatus over a network and thereby waking up, including a wake-up instruction receiving unit that receives the wake-up instruction, a wake-up control unit that performs wake-up processing in a case of receiving the wake-up instruction, and a state transmitting unit that transmits a state notification of the wake-up processing to the terminal apparatus in the case of receiving the wake-up instruction.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: April 19, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Yuji Mukai, Hikaru Kumagai, Kyoichi Kamijima
  • Patent number: 9159007
    Abstract: A network apparatus transmits the completion notice of the start to a start indicating apparatus in a case of completing a start processing to be executed according to a start indication. In a case of monitoring and receiving the receipt of the completion notice of the start transmitted from the network apparatus, the start indicating apparatus transmits the completion notice of the start with respect to a terminal apparatus through a repeating apparatus.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: October 13, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hikaru Kumagai, Yuji Mukai, Kyoichi Kamijima
  • Publication number: 20130229688
    Abstract: A network apparatus transmits the completion notice of the start to a start indicating apparatus in a case of completing a start processing to be executed according to a start indication. In a case of monitoring and receiving the receipt of the completion notice of the start transmitted from the network apparatus, the start indicating apparatus transmits the completion notice of the start with respect to a terminal apparatus through a repeating apparatus.
    Type: Application
    Filed: February 26, 2013
    Publication date: September 5, 2013
    Applicant: Seiko Epson Corporation
    Inventors: Hikaru Kumagai, Yuji Mukai, Kyoichi Kamijima
  • Publication number: 20130232257
    Abstract: Provided is a network apparatus that has a function of receiving a wake-up instruction from a terminal apparatus over a network and thereby waking up, including a wake-up instruction receiving unit that receives the wake-up instruction, a wake-up control unit that performs wake-up processing in a case of receiving the wake-up instruction, and a state transmitting unit that transmits a state notification of the wake-up processing to the terminal apparatus in the case of receiving the wake-up instruction.
    Type: Application
    Filed: February 26, 2013
    Publication date: September 5, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yuji Mukai, Hikaru Kumagai, Kyoichi Kamijima