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    Data storage device and control method for power-save modes thereof
    1.
    发明申请
    Data storage device and control method for power-save modes thereof 审中-公开
    数据存储装置及其省电模式的控制方法

    公开(公告)号：US20060129703A1

    公开(公告)日：2006-06-15

    申请号：US11285929

    申请日：2005-11-23

    申请人： Hiroshi Oshikawa ,  Daisuke Kawamata ,  Hirofumi Saitoh ,  Tsuguaki Kowa

    发明人： Hiroshi Oshikawa ,  Daisuke Kawamata ,  Hirofumi Saitoh ,  Tsuguaki Kowa

    IPC分类号： G06F3/00

    CPC分类号： G06F3/0625 ,  G06F1/3221 ,  G06F3/0659 ,  G06F3/0674 ,  Y02D10/154

    摘要： Embodiments of the invention realize a power-save mode which prevents reduction in performance of a data storage device. The HDD as an embodiment of the present invention, upon receiving a request for switching to a power-save mode (PMREQ) from the host, judges whether the serial interface should be switched to the power-save mode based on the execution status of the command. When the HDD has determined not to switch the serial interface to the power-save mode, the HDD transmits a negative response (PMNACK) to the host and keep the serial interface in the active mode. By denying switching to a power-save mode when data transfer is executed within a short period of time, etc., it is possible to prevent reduction in performance of the data storage device.

    摘要翻译： 本发明的实施例实现了防止数据存储设备的性能降低的省电模式。 作为本发明的实施例的HDD，在从主机接收到切换到省电模式（PMREQ）的请求时，基于该主机的执行状态判断串行接口是否应切换到省电模式 命令。 当HDD确定不将串行接口切换到省电模式时，HDD向主机发送否定响应（PMNACK），并将串行接口保持在活动模式。 通过在短时间等内进行数据传送时拒绝切换到省电模式，可以防止数据存储装置的性能降低。