Patents by Inventor Kazuichi FUJISAKA

Kazuichi FUJISAKA 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: 11431516
    Abstract: A network system includes: an electric power system including a first power supply system and a second power supply system; a higher-level device connected to a first power supply of the first power supply system and a second power supply of the second power supply system; a first intermediate device connected to the first power supply of the first power supply system and configured to control supply of an electric power to a first lower-level device; and a second intermediate device connected to the second power supply of the second power supply system and configured to control supply of an electric power to a second lower-level device that is a redundant component for the first lower-level device.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: August 30, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
    Inventors: Naofumi Ota, Jiro Ito, Ryota Misumi, Kazuichi Fujisaka, Sadahisa Yamada
  • Publication number: 20220266779
    Abstract: An in-vehicle power supply system includes: a main power supply configured to supply power; one or more power supply hubs; a plurality of electronic devices; a main power cable configured to connect the one or more power supply hubs to the main power supply; a sub power cable configured to connect each of the plurality of electronic devices to any one of the one or more power supply hubs; and a control unit configured to turn on/off power supply to each of the plurality of electronic devices through a power supply hub connected to the electronic device. For the plurality of electronic devices, a predetermined voltage is specified, and it is designed so that, while power is supplied to the plurality of electronic devices connected to the one or more power supply hubs, the predetermined voltage of at least one of the plurality of electronic devices is ensured.
    Type: Application
    Filed: July 21, 2020
    Publication date: August 25, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Kazuichi FUJISAKA, Masaaki SHIMIZU
  • Publication number: 20220266780
    Abstract: An onboard power source system includes: a main power source unit that supplies power; one or a plurality of power source hubs; a plurality of electronic devices; and a main power feeding cable that connects the one or plurality of power source hubs to the main power source unit, in which an electronic device related to power among the plurality of electronic devices and an electronic device related to traveling or safety among the plurality of electronic devices are connected to different power source hubs.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 25, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Kazuichi FUJISAKA, Masaaki SHIMIZU
  • Publication number: 20220266781
    Abstract: An in-vehicle power supply system includes first to sixth power supply hubs connected to a main feed line routed from a battery, electronic devices connected to the first to sixth power supply hubs, and a relay configured to turn ON or OFF energization of each of the electronic devices. The relay includes a mechanical relay used for an electronic device whose current consumption is higher than or equal to 10 A, and the relay includes a semiconductor relay used for an electronic device whose current consumption is lower than 10 A. The mechanical relay is disposed outside a space of a vehicle cabin and inside a body of a vehicle, the space of the vehicle cabin being surrounded by a water seal that blocks entry of water from an outside of the vehicle into the vehicle cabin.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 25, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Kazuichi FUJISAKA, Masaaki SHIMIZU
  • Publication number: 20220266799
    Abstract: An in-vehicle power supply system includes multiple power supply hubs, multiple electronic device, which are connected to the power supply hubs through auxiliary feeder cables, and a control unit which controls on and off of power supply to the electronic devices. The control unit has an approach determination unit, which determines whether a passenger has approached the vehicle, and a power supply start controller, which switches on power supply to at least one of the electronic devices when the approach determination unit determines that the passenger has approached the vehicle.
    Type: Application
    Filed: July 21, 2020
    Publication date: August 25, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Kazuichi FUJISAKA, Masaaki SHIMIZU
  • Publication number: 20220203909
    Abstract: An in-vehicle power supply system includes first to sixth power supply hubs connected to a main feed line, electronic devices connected to the first to sixth power supply hubs via a sub feed line, and a control device configured to control power feeding to the electronic devices. The control device is configured to control, based on a condition regarding a current consumption of the electronic devices, power feeding to the electronic devices such that the current consumption of the electronic devices is lower than an allowable current consumption that is predetermined in accordance with a scene of using a vehicle.
    Type: Application
    Filed: July 22, 2020
    Publication date: June 30, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Sadahisa YAMADA, Kazuichi FUJISAKA, Masaaki SHIMIZU
  • Publication number: 20220121269
    Abstract: An in-vehicle control device includes a processor configured to: control a device of a first type, which has a function of switching an operation mode between a normal mode and a mode in which power consumption is limited compared to the normal mode in accordance with an instruction via communication and a device of a second type, which does not have the function; specify a limited device that is a device of which power consumption is to be limited, based on information acquired from outside; transmit to the limited device via a communication line an instruction to shift the operation mode to the mode in which power consumption is limited compared to the normal mode, when the limited device is the device of the first type; and stop power supply to the limited device when the limited device is the device of the second type.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 21, 2022
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
    Inventors: Naofumi OTA, Jiro ITO, Ryota MISUMI, Kazuichi FUJISAKA, Sadahisa YAMADA
  • Patent number: 11249543
    Abstract: An in-vehicle control device includes a processor configured to: control a device of a first type, which has a function of switching an operation mode between a normal mode and a mode in which power consumption is limited compared to the normal mode in accordance with an instruction via communication and a device of a second type, which does not have the function; specify a limited device that is a device of which power consumption is to be limited, based on information acquired from outside; transmit to the limited device via a communication line an instruction to shift the operation mode to the mode in which power consumption is limited compared to the normal mode, when the limited device is the device of the first type; and stop power supply to the limited device when the limited device is the device of the second type.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: February 15, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
    Inventors: Naofumi Ota, Jiro Ito, Ryota Misumi, Kazuichi Fujisaka, Sadahisa Yamada
  • Publication number: 20210067356
    Abstract: A network system includes: an electric power system including a first power supply system and a second power supply system; a higher-level device connected to a first power supply of the first power supply system and a second power supply of the second power supply system; a first intermediate device connected to the first power supply of the first power supply system and configured to control supply of an electric power to a first lower-level device; and a second intermediate device connected to the second power supply of the second power supply system and configured to control supply of an electric power to a second lower-level device that is a redundant component for the first lower-level device.
    Type: Application
    Filed: August 18, 2020
    Publication date: March 4, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
    Inventors: Naofumi OTA, Jiro ITO, Ryota MISUMI, Kazuichi FUJISAKA, Sadahisa YAMADA
  • Publication number: 20210064121
    Abstract: An in-vehicle control device includes a processor configured to: control a device of a first type, which has a function of switching an operation mode between a normal mode and a mode in which power consumption is limited compared to the normal mode in accordance with an instruction via communication and a device of a second type, which does not have the function; specify a limited device that is a device of which power consumption is to be limited, based on information acquired from outside; transmit to the limited device via a communication line an instruction to shift the operation mode to the mode in which power consumption is limited compared to the normal mode, when the limited device is the device of the first type; and stop power supply to the limited device when the limited device is the device of the second type.
    Type: Application
    Filed: August 20, 2020
    Publication date: March 4, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, MAZDA MOTOR CORPORATION
    Inventors: Naofumi OTA, Jiro ITO, Ryota MISUMI, Kazuichi FUJISAKA, Sadahisa YAMADA