Patents by Inventor Arata DOI

Arata DOI 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: 11847907
    Abstract: A traffic flow simulator configured to simulate a traffic flow of a plurality of simulation vehicles generated in a road network. The traffic flow simulator includes: a route selection unit configured to select a route for each of a plurality of the simulation vehicles in accordance with a predetermined route selection model; and an index calculation unit configured to calculate a traffic evaluation index of the road network by causing each of a plurality of the simulation vehicles to move on the road network in accordance with the route. The route selection unit records, into a storage unit, a first route selected during execution of a first mode below and a second route selected during execution of a second mode below, the first and second mode being a work mode in which the traffic flow is simulated under a first and second setting condition.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: December 19, 2023
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SYSTEMS SOLUTIONS CO., LTD.
    Inventors: Hajime Sakakibara, Hiroshi Matsumoto, Nobihiro Yamazaki, Arata Doi, Hirofumi Ogami
  • Patent number: 11335201
    Abstract: An apparatus according to one aspect of the present invention determines whether or not platoon vehicles can pass through an intersection, and includes: a calculation unit that calculates a first distance, a second distance, and a third distance described below; and a determination unit that determines whether or not the platoon vehicles can pass through the intersection, based on a result of comparison of the first distance with the second and third distances. First distance: a distance from a stop line of the intersection to a position of a leading vehicle at the present time. Second distance: a distance obtained by subtracting a platoon length from a distance of traveling for a remaining green interval at a vehicle speed at the present time. Third distance: a distance required for the leading vehicle to safely stop before the stop line of the intersection, with the vehicle speed at the present time.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: May 17, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hajime Sakakibara, Arata Doi, Hiroshi Matsumoto, Nobuhiro Yamazaki
  • Patent number: 11270580
    Abstract: A traffic signal control apparatus capable of controlling signal light colors at a target intersection includes: an acquisition unit configured to acquire positional information of a tail-end vehicle among platoon vehicles traveling on an inflow road of the target intersection, and a vehicle speed of the platoon vehicles; and a control unit configured to, when the tail-end vehicle cannot pass a stop line of the target intersection by the time a remaining green interval elapses, execute preferential control that allows the platoon vehicles to preferentially pass through the target intersection by extending a clearance interval of the target intersection.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: March 8, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nobuhiro Yamazaki, Hajime Sakakibara, Arata Doi, Hiroshi Matsumoto
  • Patent number: 11232706
    Abstract: A traffic signal control apparatus capable of controlling signal light colors at a target intersection and a downstream intersection, and includes: an acquisition unit configured to acquire a platoon length of platoon vehicles that are traveling on an inflow road of the target intersection, and an empty space length in a planned traveling route of the platoon vehicles; and a control unit configured to determine whether or not to control the signal light color at the downstream intersection corresponding to the planned traveling route of the platoon vehicles, according to a result of comparison between the platoon length and the empty space length.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: January 25, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nobuhiro Yamazaki, Hajime Sakakibara, Arata Doi, Hiroshi Matsumoto
  • Publication number: 20210233394
    Abstract: A device according to an aspect of the present disclosure is a traffic flow simulator configured to simulate a traffic flow of a plurality of simulation vehicles generated in a road network. The traffic flow simulator includes: a route selection unit configured to select a route for each of a plurality of the simulation vehicles in accordance with a predetermined route selection model; and an index calculation unit configured to calculate a traffic evaluation index of the road network by causing each of a plurality of the simulation vehicles to move on the road network in accordance with the route. The route selection unit records, into a storage unit, a first route selected during execution of a first mode below and a second route selected during execution of a second mode below, the first mode being a work mode in which the traffic flow is simulated under a first setting condition, the second mode being a work mode in which the traffic flow is simulated under a second setting condition.
    Type: Application
    Filed: August 6, 2018
    Publication date: July 29, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC SYSTEM SOLUTIONS CO., LTD.
    Inventors: Hajime SAKAKIBARA, Hiroshi MATSUMOTO, Nobihiro YAMAZAKI, Arata DOI, Hirofumi OGAMI
  • Publication number: 20210056840
    Abstract: A traffic signal control apparatus capable of controlling signal light colors at a target intersection includes: an acquisition unit configured to acquire positional information of a tail-end vehicle among platoon vehicles traveling on an inflow road of the target intersection, and a vehicle speed of the platoon vehicles; and a control unit configured to, when the tail-end vehicle cannot pass a stop line of the target intersection by the time a remaining green interval elapses, execute preferential control that allows the platoon vehicles to preferentially pass through the target intersection by extending a clearance interval of the target intersection.
    Type: Application
    Filed: December 12, 2018
    Publication date: February 25, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nobuhiro YAMAZAKI, Hajime SAKAKIBARA, Arata DOI, Hiroshi MATSUMOTO
  • Publication number: 20200402406
    Abstract: An apparatus according to one aspect of the present invention determines whether or not platoon vehicles can pass through an intersection, and includes: a calculation unit that calculates a first distance, a second distance, and a third distance described below; and a determination unit that determines whether or not the platoon vehicles can pass through the intersection, based on a result of comparison of the first distance with the second and third distances. First distance: a distance from a stop line of the intersection to a position of a leading vehicle at the present time. Second distance: a distance obtained by subtracting a platoon length from a distance of traveling for a remaining green interval at a vehicle speed at the present time. Third distance: a distance required for the leading vehicle to safely stop before the stop line of the intersection, with the vehicle speed at the present time.
    Type: Application
    Filed: December 27, 2018
    Publication date: December 24, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hajime SAKAKIBARA, Arata DOI, Hiroshi MATSUMOTO, Nobuhiro YAMAZAKI
  • Publication number: 20200402397
    Abstract: A traffic signal control apparatus capable of controlling signal light colors at a target intersection and a downstream intersection, and includes: an acquisition unit configured to acquire a platoon length of platoon vehicles that are traveling on an inflow road of the target intersection, and an empty space length in a planned traveling route of the platoon vehicles; and a control unit configured to determine whether or not to control the signal light color at the downstream intersection corresponding to the planned traveling route of the platoon vehicles, according to a result of comparison between the platoon length and the empty space length.
    Type: Application
    Filed: December 12, 2018
    Publication date: December 24, 2020
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Nobuhiro YAMAZAKI, Hajime SAKAKIBARA, Arata DOI, Hiroshi MATSUMOTO