Patents by Inventor Hiroshi Onimaru

Hiroshi Onimaru 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).

  • Electronic device and current monitoring method
    Patent number: 9335350
    Abstract: An electronic device includes: a detection circuit to detect a voltage difference between both ends of a wiring portion which is at least a portion of a power supply wiring that connects a power supply circuit and a receiver circuit; a current supply circuit to supply a pilot current having a first current value which is smaller than a second current value of a main current to the power supply wiring; and a control circuit to control supply of the pilot current and stop of the supply of the pilot current, to calculate a wiring resistance value of the wiring portion based on a first value of the voltage difference when the supply is stopped, a second value of the voltage difference when the pilot current is supplied, and the first current value and to calculate the second current value based on the first value and the wiring resistance value.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: May 10, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Hiroshi Onimaru, Yuji Ishii, Kenji Rikimaru, Kenichi Kawazoe, Hiroshi Adachi
  • ELECTRONIC DEVICE AND CURRENT MONITORING METHOD
    Publication number: 20150022225
    Abstract: An electronic device includes: a detection circuit to detect a voltage difference between both ends of a wiring portion which is at least a portion of a power supply wiring that connects a power supply circuit and a receiver circuit; a current supply circuit to supply a pilot current having a first current value which is smaller than a second current value of a main current to the power supply wiring; and a control circuit to control supply of the pilot current and stop of the supply of the pilot current, to calculate a wiring resistance value of the wiring portion based on a first value of the voltage difference when the supply is stopped, a second value of the voltage difference when the pilot current is supplied, and the first current value and to calculate the second current value based on the first value and the wiring resistance value.
    Type: Application
    Filed: June 13, 2014
    Publication date: January 22, 2015
    Inventors: Hiroshi Onimaru, Yuji Ishii, Kenji Rikimaru, Kenichi Kawazoe, Hiroshi Adachi