Patents by Inventor Kentaroh KUROSU

Kentaroh KUROSU 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: 20230305450
    Abstract: A power supply device includes: a DC power supply that generates a DC voltage of a variable value and outputs the DC voltage; an AC power supply that generates an AC voltage of a variable value, and superimposes the AC voltage and the DC voltage to generate a superimposed voltage for output; and a control circuit. The control circuit start giving the DC power supply an instruction to output the DC voltage, and start giving the AC power supply an instruction to output the AC voltage for restricting output of the DC voltage. The control circuit controls an absolute value of the superimposed voltage to be smaller than or equal to a predetermined value in a predetermined period from a time when the giving of the instruction to output the AC voltage is started to a time when the restricting of the output of the DC voltage is started.
    Type: Application
    Filed: March 17, 2023
    Publication date: September 28, 2023
    Inventors: Keita YOSHIKAWA, Kentaroh KUROSU, Taichi URAYAMA, Suguru YOKOZAWA
  • Patent number: 9983534
    Abstract: A motor control device for driving a motor, the motor control device includes: a receiver configured to receive, from an external source, a drive command containing a rotation direction command designating a rotation direction of the motor; a storage part configured to store the rotation direction of the motor indicated by the rotation direction command when the motor is driven using the rotation direction command; and a controller configured to, when a new piece of the drive command is received from the external source, control rotation reversing of the motor based on a rotation direction of the motor indicated by the rotation direction command contained in the received piece of the drive command and the rotation direction of the motor stored in the storage part.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: May 29, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Motoharu Takahashi, Yoshihiro Asano, Takuya Murata, Shingo Nagatsuka, Kentaroh Kurosu
  • Patent number: 9964958
    Abstract: A vehicle control system determines a travel priority of a vehicle based on a travel condition of the vehicle. In response to detection of an oncoming vehicle ahead of the vehicle along a single guide path, the system compares between the travel priority of the vehicle, and a travel priority of the oncoming vehicle, and selects one of the vehicle and the oncoming vehicle as a vehicle to change a traveling route, to allow the unselected vehicle to continue traveling along the single guide path.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: May 8, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryohta Morimoto, Kentaroh Kurosu, Miyo Taniguchi, Yoshiaki Kawai, Takashi Enami, Akira Murakata, Manabu Kodama, Shinya Tanaka
  • Patent number: 9944482
    Abstract: A motor control device includes: an electric-current detection unit configured to detect an electric current that flows through a motor at a time when the motor is not to be driven; a voltage-polarity determining unit configured to determine polarity of a voltage corresponding to the detected electric current; and an operating-state management unit configured to perform control of stopping the motor depending on the polarity of the voltage.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: April 17, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihiro Asano, Shingo Nagatsuka, Takuya Murata, Kentaroh Kurosu, Motoharu Takahashi
  • Publication number: 20170192438
    Abstract: A vehicle control system determines a travel priority of a vehicle based on a travel condition of the vehicle. In response to detection of an oncoming vehicle ahead of the vehicle along a single guide path, the system compares between the travel priority of the vehicle, and a travel priority of the oncoming vehicle, and selects one of the vehicle and the oncoming vehicle as a vehicle to change a traveling route, to allow the unselected vehicle to continue traveling along the single guide path.
    Type: Application
    Filed: January 3, 2017
    Publication date: July 6, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Ryohta Morimoto, Kentaroh Kurosu, Miyo Taniguchi, Yoshiaki Kawai, Takashi Enami, Akira Murakata, Manabu Kodama, Shinya Tanaka
  • Publication number: 20170187321
    Abstract: A motor control device includes a controller and a detector. The controller is configured to control, when receiving an operation request indicating rotation or stop of a motor, rotation of the motor based on the operation request. The detector is configured to detect whether the motor is rotating. The controller stops the motor when the detector detects rotation of the motor after an elapsed time from reception of the operation request indicating stop of the motor reaches a first threshold.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 29, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Shingo NAGATSUKA, Kentaroh KUROSU, Yoshihiro ASANO, Motoharu TAKAHASHI, Takuya MURATA
  • Publication number: 20170090386
    Abstract: A motor control device for driving a motor, the motor control device includes: a receiver configured to receive, from an external source, a drive command containing a rotation direction command designating a rotation direction of the motor; a storage part configured to store the rotation direction of the motor indicated by the rotation direction command when the motor is driven using the rotation direction command; and a controller configured to, when a new piece of the drive command is received from the external source, control rotation reversing of the motor based on a rotation direction of the motor indicated by the rotation direction command contained in the received piece of the drive command and the rotation direction of the motor stored in the storage part.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 30, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Motoharu TAKAHASHI, Yoshihiro ASANO, Takuya MURATA, Shingo NAGATSUKA, Kentaroh KUROSU
  • Publication number: 20170001822
    Abstract: A motor control device includes: an electric-current detection unit configured to detect an electric current that flows through a motor at a time when the motor is not to he driven; a voltage-polarity determining unit configured to determine polarity of a voltage corresponding to the detected electric current; and an operating-state management unit configured to perform control of stopping the motor depending on the polarity of the voltage.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 5, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshihiro ASANO, Shingo NAGATSUKA, Takuya MURATA, Kentaroh KUROSU, Motoharu TAKAHASHI