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    • 3. 发明申请
    • POWER CONSERVATION BASED ON HARD DISK ROTATIONAL INERTIA
    • 基于硬盘旋转运算的功率保护
    • US20140185156A1
    • 2014-07-03
    • US13729221
    • 2012-12-28
    • James P. KardachKIRSTY MACDONALDPETER GIBSON
    • James P. KardachKIRSTY MACDONALDPETER GIBSON
    • G11B19/28
    • G11B19/28
    • Various embodiments are generally directed recurringly cycling the driving of a platter media of a hard drive with a motor, allowing rotation of the platter media to slow only to a threshold rotational speed to balance power conservation with delays in accessing data. A method comprises driving platter media of a hard drive to rotate at a selected normal rotational speed, retrieving data stored on the platter media when the platter media rotates at the normal rotational speed, ceasing to drive the platter media to rotate to allow the platter media to rotate under rotational inertia imparted to the platter media, monitoring a current rotational speed of the platter media, and resuming driving the platter media to rotate based on the current rotational speed falling to a lower threshold rotational speed selected to be less than the normal rotational speed. Other embodiments are described and claimed.
    • 各种实施例通常定期循环利用电动机驱动硬盘驱动器的盘片介质,允许盘片介质的旋转仅减慢到阈值旋转速度以平衡功率节省与访问数据的延迟。 一种方法包括驱动硬盘驱动器的盘式介质以选定的正常转速旋转,当盘式介质以正常转速旋转时检索存储在盘片介质上的数据,停止驱动盘式介质旋转以允许盘片介质 在旋转惯性下旋转到盘片介质上,监测盘片介质的当前旋转速度,并且基于当前旋转速度下降到低于正常旋转的较低阈值旋转速度,重新开始驱动盘片介质旋转 速度。 描述和要求保护其他实施例。