Patents by Inventor Kunihiko Yamada

Kunihiko Yamada 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: 11456913
    Abstract: Switching hubs such as relay devices capable of path control are arranged at a plurality of branch positions respectively on a wire harness including a trunk line of a communication line. Each of the relay devices includes a failure detection part, a routing map, and a path control part. The trunk line of the communication line is formed to make it possible to use a plurality of types of paths selectively. When the failure detection part in any relay device detects a failure, an instruction of path change is given to another relay device therefrom. When any relay device receives an instruction of path change from another relay device, the routing maps in the relay device receiving the instruction are switched according to a failure occurrence portion. A VLAN is constructed on an Ethernet communication network, and logical assignment of the VLAN is controlled by a central gateway.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: September 27, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
  • Publication number: 20220297618
    Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.
    Type: Application
    Filed: June 7, 2022
    Publication date: September 22, 2022
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 11407371
    Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: August 9, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 11323286
    Abstract: A plurality of zones is formed in a communication network on the vehicle, and a communication path in a loop form is formed in each zone by zone trunk lines and a backup line. The backup line is connected by a switch only at the time of disconnection so that the loop is not closed. At the time of disconnection detection, an instruction is automatically given to rewrite content of routing maps on zone ECUs and a central gateway. Since each node preferentially selects a communication path that bypasses a disconnection portion from the start of communication by rewriting the content of the routing maps, it is possible to avoid an increase in communication delay. An inter-zone backup line connecting a plurality of zones is provided to enable the use of a new path across the plurality of zones at the time of disconnection.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: May 3, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
  • Patent number: 11323861
    Abstract: An in-vehicle communication system including independent communication hub devices each incorporating a function of relaying communication and a function of controlling a communication path among a plurality of communication connectors, in which each of the communication hub devices includes an internal power supply unit configured to generate, based on input power supply power supplied from a main power supply on a vehicle side, stabilized power supply power necessary for operation of an internal circuit, and a backup power supply output unit configured to supply the input power supply power or the stabilized power supply power generated by the internal power supply unit to the other communication hub device as backup power, in which a backup power supply line is provided which connects the backup power supply output units of the plurality of communication hub devices.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: May 3, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto
  • Patent number: 11128276
    Abstract: A noise filter includes a filter circuit including a noise reduction element that reduces a noise component, a conductive first circuit connection member to which a first connection portion of the noise reduction element is electrically connected, and a conductive second circuit connection member to which a second connection portion of the noise reduction element is electrically connected, a first electric connection structure that electrically connects an intermediate connection portion of a core wire of a first electric wire to the first circuit connection member, and a second electric connection structure that electrically connects an intermediate connection portion of a core wire of a second electric wire whose one end is grounded, to the second circuit connection member.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: September 21, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masashi Tsukamoto, Kunihiko Yamada, Ryoma Toyoda, Keigo Tsubo
  • Patent number: 11121470
    Abstract: A film antenna includes a sheet-shaped resin film; an antenna pattern; a power feed pattern; and a ground pattern. The antenna pattern is formed on a front face of the resin film and used for transmission and reception of a signal. The power feed pattern is formed on the front face of the resin film, connected with the antenna pattern, and used for transmission of an electric signal. The ground pattern is electrically conductive and formed on a back face of the resin film.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: September 14, 2021
    Assignee: Yazaki Corporation
    Inventors: Eita Itou, Kunihiko Yamada, Kenji Matsushita
  • Publication number: 20210258188
    Abstract: A communication path in a loop form is formed by trunk lines and a redundant communication path, which is formed by a switch and a backup line. In order to be applied to a bus-type communication network such as a CAN, the switch is normally off, and the backup line is disconnected from a path in a steady state. A disconnection detection unit is provided at each of joint connectors. When any disconnection detection unit detects disconnection, the switch is closed to enable use of the redundant path. Further, content of a routing map of a central gateway is automatically rewritten to preferentially select the redundant path that is not disconnected, and thus the path is changed.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 19, 2021
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
  • Publication number: 20210258189
    Abstract: A plurality of zones is formed in a communication network on the vehicle, and a communication path in a loop form is formed in each zone by zone trunk lines and a backup line. The backup line is connected by a switch only at the time of disconnection so that the loop is not closed. At the time of disconnection detection, an instruction is automatically given to rewrite content of routing maps on zone ECUs and a central gateway. Since each node preferentially selects a communication path that bypasses a disconnection portion from the start of communication by rewriting the content of the routing maps, it is possible to avoid an increase in communication delay. An inter-zone backup line connecting a plurality of zones is provided to enable the use of a new path across the plurality of zones at the time of disconnection.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 19, 2021
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
  • Publication number: 20210258204
    Abstract: Switching hubs such as relay devices capable of path control are arranged at a plurality of branch positions respectively on a wire harness including a trunk line of a communication line. Each of the relay devices includes a failure detection part, a routing map, and a path control part. The trunk line of the communication line is formed to make it possible to use a plurality of types of paths selectively. When the failure detection part in any relay device detects a failure, an instruction of path change is given to another relay device therefrom. When any relay device receives an instruction of path change from another relay device, the routing maps in the relay device receiving the instruction are switched according to a failure occurrence portion. A VLAN is constructed on an Ethernet communication network, and logical assignment of the VLAN is controlled by a central gateway.
    Type: Application
    Filed: February 16, 2021
    Publication date: August 19, 2021
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
  • Patent number: 11056775
    Abstract: An integrated antenna module to be applied to an in-vehicle system includes an antenna element group that is mounted on a vehicle and is formed of a plurality of antenna elements, and the antenna element group constitutes a plurality of antennas capable of transmitting or receiving a plurality of electromagnetic waves by combining the plurality of antenna elements.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: July 6, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Takashi Shiroki, You Yanagida, Kunihiko Yamada, Ryoma Toyoda
  • Publication number: 20210197743
    Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.
    Type: Application
    Filed: February 24, 2021
    Publication date: July 1, 2021
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 11031694
    Abstract: In an antenna, the outer conductor is formed of a first linear conductor, the first linear conductor having a length corresponding to one wavelength of a right-handed circularly polarized wave and circularly extended from a first feed point to a second feed point. The inner conductor is disposed inside the outer conductor and formed of a second linear conductor, the second linear conductor being different from the first linear conductor and having a length determined based on one wavelength of a left-handed circularly polarized wave. The inner conductor has a starting point of the second linear conductor connected to the first feed point and has an end point of the second linear conductor kept free from connection at a location inside the outer conductor, and causes current to flow in a direction opposite to the current flow in the outer conductor.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: June 8, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Eita Itou, Kunihiko Yamada, Yoshikazu Nagashima, Kenji Matsushita, Tatsuo Toba
  • Patent number: 10994676
    Abstract: An electric connection box includes: the housing, or a plurality of communication connectors provided therein; a communication switch circuit, which is provided inside the housing, has a communication relay function and controls a communication path between the plurality of communication connectors; and a common power supply circuit, which is provided inside the housing and capable of supplying common power generated based on the power from the input side power supply line to a plurality of electric circuits including the communication switch circuit.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: May 4, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto
  • Patent number: 10988092
    Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: April 27, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 10974671
    Abstract: A vehicular circuit body includes a trunk line that extends in a front-and-rear direction of a vehicle, a plurality of control boxes that are provided on the trunk line, and a branch line that connects the control box to an accessory. The trunk line and the branch line each includes a power line having a predetermined current capacity and a communication line having a predetermined communication capacity. The vehicle is divided into a plurality of regions. At least two control boxes are disposed in the regions which are different from each other, each of which includes a gateway conversing communication methods for the communication line of the branch line and the communication line of the trunk line. A plurality of the gateways are able to communicate with each other via the communication line of the trunk line.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 13, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 10946818
    Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line and is routed in a vehicle body, and a plurality of control boxes that are disposed in a distribution manner along the trunk line. In a vehicle, a first power source supplies power to an accessory mounted on the vehicle and a second power source supplies power which is higher in voltage than the power of the first power source to a drive source of the vehicle. The vehicular circuit body further includes a voltage drop unit that reduces the voltage of the power supplied from the second power source, to the voltage of the power of the first power source. To the power source line of the trunk line, the power from the first power source is supplied, and the power from the second power source is supplied through the voltage drop unit.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: March 16, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 10919465
    Abstract: A vehicular circuit body provided in a vehicle, includes: a trunk line that extends in at least a front-and-rear direction of the vehicle; and a plurality of control boxes that are provided in the trunk line, in which the trunk line includes power source lines of two systems and a communication line.
    Type: Grant
    Filed: December 22, 2018
    Date of Patent: February 16, 2021
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Patent number: 10875479
    Abstract: A vehicular circuit body provided in a vehicle includes a trunk line that extends in at least a front-and-rear direction of the vehicle and a plurality of control boxes that are provided in the trunk line. The trunk line includes a power source line having a predetermined current capacity and a communication line having a predetermined communication capacity. The communication line is routed so that at least a part of the plurality of control boxes are connected in a ring form.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: December 29, 2020
    Assignee: YAZAKI CORPORATION
    Inventors: Masahiro Takamatsu, Koichi Uezono, Kousuke Kinoshita, Atsushi Nakata, Yasuyuki Saito, Kazuyuki Oiwa, Terumitsu Sugimoto, Taku Furuta, Noriaki Sasaki, Yukinari Naganishi, Sadaharu Okuda, Kunihiko Yamada
  • Publication number: 20200396577
    Abstract: An in-vehicle communication system including independent communication hub devices each incorporating a function of relaying communication and a function of controlling a communication path among a plurality of communication connectors, in which each of the communication hub devices includes an internal power supply unit configured to generate, based on input power supply power supplied from a main power supply on a vehicle side, stabilized power supply power necessary for operation of an internal circuit, and a backup power supply output unit configured to supply the input power supply power or the stabilized power supply power generated by the internal power supply unit to the other communication hub device as backup power, in which a backup power supply line is provided which connects the backup power supply output units of the plurality of communication hub devices.
    Type: Application
    Filed: May 14, 2020
    Publication date: December 17, 2020
    Inventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto