Patents by Inventor Masateru YOKOYAMA

Masateru YOKOYAMA 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).

  • Optimization of fan control for storage device
    Patent number: 10073504
    Abstract: The present invention provides a storage subsystem capable of preventing abnormal temperature rise within the subsystem and realizing an efficient cooling effect. Therefore, the storage subsystem has two or more controllers having two or more temperature sensors, and each controller determines a provisional rotational speed based on the value of the temperature sensors. One controller out of the multiple controllers operates as the master controller, and the other controllers (slave controllers) transmit a provisional rotational speed determined in its own system to the master controller. The master controller determines a greater value of the provisional rotational speed information received from the slave controllers and the provisional rotational speed determined in its own system as the final rotational speed of the fan.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: September 11, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Hidechika Nakanishi, Masateru Yokoyama
  • OPTIMIZATION OF FAN CONTROL FOR STORAGE DEVICE
    Publication number: 20170017280
    Abstract: The present invention provides a storage subsystem capable of preventing abnormal temperature rise within the subsystem and realizing an efficient cooling effect. Therefore, the storage subsystem has two or more controllers having two or more temperature sensors, and each controller determines a provisional rotational speed based on the value of the temperature sensors. One controller out of the multiple controllers operates as the master controller, and the other controllers (slave controllers) transmit a provisional rotational speed determined in its own system to the master controller. The master controller determines a greater value of the provisional rotational speed information received from the slave controllers and the provisional rotational speed determined in its own system as the final rotational speed of the fan.
    Type: Application
    Filed: July 28, 2014
    Publication date: January 19, 2017
    Inventors: Hidechika NAKANISHI, Masateru YOKOYAMA