公开(公告)号：US09837111B1

公开(公告)日：2017-12-05

申请号：US15341246

申请日：2016-11-02

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Mingzhong Ding ,  Xiong Liu ,  Xiang Lu ,  Qiang Bi ,  Kian Keong Ooi

IPC: G11B5/596

CPC classification number: G11B5/59627 ,  G11B5/59694

Abstract: Systems and methods for compensating for magnetoresistive (MR) jog offset direct current (DC) drift in a disc drive are described. In one embodiment, a method may include determining an occurrence of NOS, for example, by monitoring disc slip, to determine when the method should proceed. An MR jog offset DC drift amount is determined for each head of the disc drive. One of several approaches may be employed for determining the MR jog offset DC drift amount. By determining an MR jog offset DC drift amount for each head, a compensation profile is determined for the drive. The determined compensation profile may then be used during operation of the disc drive to compensate for the DC drift. One of several approaches may be employed for compensating based on the compensation profile.

公开(公告)号：US09304930B2

公开(公告)日：2016-04-05

申请号：US14222277

申请日：2014-03-21

Applicant: Seagate Technology LLC

Inventor： JiaHong Shu ,  Xiang Lu ,  KianKeong Ooi ,  Qiang Bi

IPC: G11B27/36 ,  G11B5/09 ,  G06F12/08 ,  G06F3/06 ,  G11B5/012 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/00 ,  G11B5/596

CPC classification number: G06F12/0868 ,  G06F3/0619 ,  G06F3/0656 ,  G06F3/0676 ,  G06F2003/0691 ,  G06F2003/0692 ,  G06F2212/1032 ,  G06F2212/202 ,  G06F2212/21 ,  G06F2212/224 ,  G06F2212/281 ,  G06F2212/313 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59694 ,  G11B20/10527 ,  G11B20/1217 ,  G11B20/1816 ,  G11B27/00 ,  G11B27/36

Abstract: Technologies are described herein for temporarily writing data to a buffer zone on a recording medium of a storage device when the device is operating in a vibration condition. A vibration condition is detected in the storage device, and upon detecting the vibration condition, data of a current write operation is written to a buffer zone on a recording medium of the storage device, the buffer zone being configured with a lower areal density of storage than primary storage zones on the recording medium. At a later time, an idle condition may be detected in the device, and upon detecting the idle condition, it may be determined whether the vibration condition exists. If it is determined that the vibration condition no longer exists, the data is transferred from the buffer zone to the primary storage zones on the recording medium.

Abstract translation: 这里描述了当设备在振动条件下操作时将数据临时写入存储设备的记录介质上的缓冲区的技术。 在存储装置中检测到振动条件，并且在检测到振动条件时，将当前写入操作的数据写入存储装置的记录介质上的缓冲区，缓冲区被配置为具有较低的存储区域密度 比记录介质上的主存储区域。 稍后，在设备中可以检测到空闲状态，并且在检测到空闲状态时，可以确定是否存在振动条件。 如果确定振动条件不再存在，则数据从缓冲区传送到记录介质上的主存储区。