Patents by Inventor Ryoichiro Yamanaka

Ryoichiro Yamanaka 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 ELECTRONIC DEVICE SYSTEM
    Publication number: 20140146450
    Abstract: An electronic device includes a power supply line configured to supply power to a mechanical section within a case and a connection terminal coupled to the power supply line, wherein the connection terminal is disposed to be opposed to a power exchange terminal of another electronic device disposed on one side surface of the case and engaged with the power exchange terminal to perform a power exchange.
    Type: Application
    Filed: October 29, 2013
    Publication date: May 29, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Tomoka AOKI, Ryoichiro Yamanaka, Kenji Aoki
  • Power consumption reduction device for data backup
    Patent number: 8037322
    Abstract: A power reducer for data backup stops a power supply one after another for each memory whose backup has been completed, thereby reducing power consumption for battery during the backup lengthening a data backup time. The power reducer for data backup in a device includes an external power supply unit supplying power to the device, auxiliary power supply unit charging based upon the power supply from the external power supply unit and supplying auxiliary power to the device when the power from the external power supply unit is stopped, a cache memory having first and second memory units and recording a part of data stored in a storage medium, and a controller controlling power from the auxiliary power supply unit to the device and stopping power to the first or second memory unit one after another.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: October 11, 2011
    Assignee: Fujitsu Limited
    Inventors: Ryoichiro Yamanaka, Yuji Fukuoka
  • POWER REDUCTION DEVICE FOR DATA BACKUP
    Publication number: 20080229133
    Abstract: A power reducer for data backup stops a power supply one after another for each memory whose backup has been completed, thereby reducing power consumption for battery during the backup lengthening a data backup time. The power reducer for data backup in a device includes an external power supply unit supplying power to the device, auxiliary power supply unit charging based upon the power supply from the external power supply unit and supplying auxiliary power to the device when the power from the external power supply unit is stopped, a cache memory having first and second memory units and recording a part of data stored in a storage medium, and a controller controlling power from the auxiliary power supply unit to the device and stopping power to the first or second memory unit one after another.
    Type: Application
    Filed: February 26, 2008
    Publication date: September 18, 2008
    Applicant: Fujitsu Limited
    Inventors: Ryoichiro YAMANAKA, Yuji Fukuoka