Patents by Inventor Chihiro Kameyama

Chihiro Kameyama 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).

  • Publication number: 20220340120
    Abstract: A motor vehicle includes: an engine; an electric motor for traveling that is able to perform regenerative driving; a power storage device that is able to supply electric power to the electric motor and to be supplied with electric power from the electric motor; and a control device that controls autonomous driving including automated parking. Interruption control of causing a vehicle to stop and setting a shift position in a neutral range to interrupt autonomous driving is executed when a shift operation is performed during autonomous driving. The shift position is set in a parking range and autonomous driving is ended, and then the power storage device is charged using power from the engine, when a storage ratio of the power storage device reaches less than a predetermined ratio during interruption of autonomous driving that is performed through the interruption control.
    Type: Application
    Filed: March 3, 2022
    Publication date: October 27, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yudai HIJIKATA, Chihiro KAMEYAMA
  • Patent number: 10348238
    Abstract: When the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature, the drive system controls the boost converter and the inverter, such that the motor is driven in a range of an electric power on which a limit is imposed to decrease a discharge power upper limit value. When a failure occurs in the boost converter, the drive system stops the boost converter. When it is subsequently determined that the failure of the boost converter causes a failure of the temperature sensor, the drive system controls the inverter, such that the motor is driven without a limit imposed on the discharge power upper limit value, irrespective of the temperature detected by the temperature sensor that is equal to or higher than the predetermined temperature.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 9, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuta Sachimori, Chihiro Kameyama, Koji Kuraoka
  • Publication number: 20180302020
    Abstract: When the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature, the drive system controls the boost converter and the inverter, such that the motor is driven in a range of an electric power on which a limit is imposed to decrease a discharge power upper limit value. When a failure occurs in the boost converter, the drive system stops the boost converter. When it is subsequently determined that the failure of the boost converter causes a failure of the temperature sensor, the drive system controls the inverter, such that the motor is driven without a limit imposed on the discharge power upper limit value, irrespective of the temperature detected by the temperature sensor that is equal to or higher than the predetermined temperature.
    Type: Application
    Filed: March 27, 2018
    Publication date: October 18, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuta SACHIMORI, Chihiro KAMEYAMA, Koji KURAOKA
  • Patent number: 6693919
    Abstract: A frame synchronization circuit has a frame synchronization pattern detecting circuit for detecting a frame synchronization pattern from received frame data and for outputting a pattern detection signal; a frame synchronization state transition managing circuit for managing state transitions; and a frame timing generation circuit for detecting a transition from a hunting state and for generating an enable signal. The frame synchronization state transition managing circuit manages the number of times a frame synchronization pattern is and is not detected, and makes a transition from the hunting state to a synchronization state if the frame synchronization pattern is detected consecutively for a backward protection stage count, and makes a transition from the synchronization state to the hunting state if the frame synchronization pattern is not detected consecutively for a forward protection stage count.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: February 17, 2004
    Assignee: NEC Electronics Corporation
    Inventor: Chihiro Kameyama