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1.
公开(公告)号:US10204650B1
公开(公告)日:2019-02-12
申请号:US16102238
申请日:2018-08-13
Applicant: Seagate Technology LLC
Inventor: Xiong Liu , Lihong Zhang , KianKeong Ooi , Xiang Lu
Abstract: Gain values used by a variable gain amplifier (VGA) to read servo marks of a heat-assisted recording medium are measured. Sector-specific, repeatable gain values that indicate an expected VGA gain at a desired clearance are determined based on the measured gain values. The sector-specific, repeatable gain values are used as input to a closed-loop clearance controller together with measured values of servo VGA gain while writing data to the recording medium.
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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。
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3.
公开(公告)号:US09111560B1
公开(公告)日:2015-08-18
申请号:US14605076
申请日:2015-01-26
Applicant: Seagate Technology LLC
Inventor: GuoQing Zhang , Mingzhong Ding , KianKeong Ooi
IPC: G11B5/55
CPC classification number: G11B5/5565 , G11B5/5547 , G11B5/5582
Abstract: An apparatus comprises a controller configured to detect a seek failure of a read/write head. The controller is additionally configured to perform a seek recovery operation in accordance with a recovery sequence in response to the seek failure; the recovery sequence comprising a plurality of recovery procedures. Further, the controller is configured to determine if the seek recovery operation is successful and determine which of the recovery procedures provided the success. And, the controller is configured to dynamically calculate the success rate of each recovery procedure, modify the recovery sequence based on the success of the seek recovery operation and based on the success rate of recovery procedures providing the success.
Abstract translation: 一种装置包括被配置为检测读/写头的寻找故障的控制器。 所述控制器还被配置为响应于所述寻找故障,根据恢复顺序执行寻道恢复操作; 所述恢复序列包括多个恢复过程。 此外,控制器被配置为确定寻求恢复操作是否成功,并确定提供成功的恢复过程中的哪一个。 并且,控制器被配置为动态地计算每个恢复过程的成功率,基于寻求恢复操作的成功并基于提供成功的恢复过程的成功率来修改恢复序列。
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公开(公告)号:US09117471B1
公开(公告)日:2015-08-25
申请号:US14577400
申请日:2014-12-19
Applicant: Seagate Technology LLC
Inventor: Xiong Liu , Mingzhong Ding , KianKeong Ooi , Hoang Dung Vu , Chan Fan Lau , Xiang Lu
CPC classification number: G11B5/56 , G11B5/59627
Abstract: An apparatus includes a controller configured to be coupled to a read/write head. The controller is configured to perform various operations including detecting a change in a time interval difference between servo sectors of a servo marked recording medium, converting the change to an offset signal that compensates for the change, and positioning the read/write head relative to the servo mark recording medium in response to the offset signal. The change in the time interval difference is representative of disk slip.
Abstract translation: 一种装置包括被配置为耦合到读/写头的控制器。 控制器被配置为执行各种操作,包括检测伺服标记的记录介质的伺服扇区之间的时间间隔差的变化,将改变转换为补偿变化的偏移信号,以及将读/写头相对于 响应于偏移信号的伺服标记记录介质。 时间间隔差异的变化代表了磁盘滑移。
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公开(公告)号:US10049692B1
公开(公告)日:2018-08-14
申请号:US14925126
申请日:2015-10-28
Applicant: Seagate Technology LLC
Inventor: Xiong Liu , Lihong Zhang , KianKeong Ooi , Xiang Lu
Abstract: Gain values used by a variable gain amplifier (VGA) to read servo marks of a heat-assisted recording medium are measured. Sector-specific, repeatable gain values that indicate an expected VGA gain at a desired clearance are determined based on the measured gain values. The sector-specific, repeatable gain values are used as input to a closed-loop clearance controller together with measured values of servo VGA gain while writing data to the recording medium.
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公开(公告)号:US20150269081A1
公开(公告)日:2015-09-24
申请号:US14222277
申请日:2014-03-21
Applicant: Seagate Technology LLC
Inventor: JiaHong Shu , Xiang Lu , KianKeong Ooi , Qiang Bi
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。
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