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1.发明授权公开(公告)号：US08934185B2
公开(公告)日：2015-01-13
申请号：US13725054
申请日：2012-12-21
Applicant: Seagate Technology LLC
Inventor： Jung Wook Hur , Won Choul Yang , Haejung Lee
Abstract: Technologies are described herein for recovering an instable head in a storage device using an internal head heater. An instability in the reader head may be detected, and, in response to detecting the instability, a thermal shock may be applied to the reader head utilizing the head heater to recover the head.
Abstract translation: 这里描述了用于使用内部头部加热器来恢复存储装置中的不稳定头部的技术。 可以检测读取器头部的不稳定性，并且响应于检测到不稳定性，可以利用头部加热器对读取头施加热冲击以恢复头部。
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Patent Agency Ranking
公开(公告)号：US09275663B2
公开(公告)日：2016-03-01
申请号：US14684805
申请日：2015-04-13
Applicant: Seagate Technology LLC
Inventor： Jung Wook Hur , Tae Won Kim , Haejung Lee
Abstract: Technologies are described herein for utilizing a head heater to test temperature stability of a head of a storage device and to prevent the head from operating in an unstable temperature condition. A temperature condition of a read/write head in a storage device is ascertained and it is determined whether the temperature condition is within a predetermined range of temperature conditions in which the read/write head exhibits instability. If the temperature condition of the read/write head is within the predetermined range, a power level of a head heater of the read/write head is adjusted to change the temperature condition of the read/write head to be outside of the predetermined range.
Abstract translation: 本文描述了技术，其利用头部加热器来测试存储装置的头部的温度稳定性并防止头部在不稳定的温度条件下操作。 确定存储装置中的读/写头的温度条件，并且确定温度条件是否在读/写头显示不稳定的温度条件的预定范围内。 如果读/写头的温度条件在预定范围内，则读/写头的头加热器的功率电平被调节以将读/写头的温度条件改变到超出预定范围。
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公开(公告)号：US09007882B1
公开(公告)日：2015-04-14
申请号：US13955920
申请日：2013-07-31
Applicant: Seagate Technology LLC
Inventor： Jung Wook Hur , Tae Won Kim , Haejung Lee
Abstract: Technologies are described herein for utilizing a head heater to test temperature stability of a head of a storage device and to prevent the head from operating in an unstable temperature condition. A first power level may be applied to a head heater of a head in a storage device, the first power level configured to simulate a temperature condition in the head. An instability of the head is determined and the temperature condition and the instability of the head are recorded in a memory. The process may be repeated to develop a range of temperature conditions in which the head exhibits instability. The range of temperature conditions and the head heater may then be utilized to prevent the head from operating in an unstable temperature condition during normal operation.
Abstract translation: 本文描述了技术，其利用头部加热器来测试存储装置的头部的温度稳定性并防止头部在不稳定的温度条件下操作。 可以将第一功率电平施加到存储装置中的头部的头部加热器，所述第一功率电平被配置为模拟头部中的温度状况。 确定头部的不稳定性，并且将头部的温度条件和不稳定性记录在存储器中。 可以重复该过程以开发头部呈现不稳定性的温度条件范围。 然后可以利用温度条件和头部加热器的范围来防止头部在正常操作期间在不稳定的温度条件下操作。
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公开(公告)号：US20150213817A1
公开(公告)日：2015-07-30
申请号：US14684805
申请日：2015-04-13
Applicant: Seagate Technology LLC
Inventor： Jung Wook Hur , Tae Won Kim , Haejung Lee
IPC: G11B5/455
Abstract: Technologies are described herein for utilizing a head heater to test temperature stability of a head of a storage device and to prevent the head from operating in an unstable temperature condition. A temperature condition of a read/write head in a storage device is ascertained and it is determined whether the temperature condition is within a predetermined range of temperature conditions in which the read/write head exhibits instability. If the temperature condition of the read/write head is within the predetermined range, a power level of a head heater of the read/write head is adjusted to change the temperature condition of the read/write head to be outside of the predetermined range.
Abstract translation: 本文描述了技术，其利用头部加热器来测试存储装置的头部的温度稳定性并防止头部在不稳定的温度条件下操作。 确定存储装置中的读/写头的温度条件，并且确定温度条件是否在读/写头显示不稳定的温度条件的预定范围内。 如果读/写头的温度条件在预定范围内，则读/写头的头加热器的功率电平被调节以将读/写头的温度条件改变到超出预定范围。
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公开(公告)号：US11133032B1
公开(公告)日：2021-09-28
申请号：US17075354
申请日：2020-10-20
Applicant: Seagate Technology LLC
Inventor： Jung Wook Hur , Lin Thi Lin , Kang Hai Lim , Teng Hou Chua , XueYi Miao , Zhi Ye
Abstract: A method includes detecting a read error during a first read operation by a read sensor on a first track on a data storage medium. The method also includes, after the read error is detected, performing a second read operation by the read sensor on the first track, carrying out bit error value (BEV) measurements for the second read operation, and determining, from the BEV measurements, whether the read sensor produces a marginal BEV, which is between first and second predetermined BEV thresholds. In response to determining that the read sensor produces the marginal BEV, a third read operation by the read sensor on the first track is carried out, and BEV measurements for the third read operation are performed. When the BEV measurements from the second and third read operations meet at least one predetermined read sensor instability criterion, it is concluded that the read sensor is unstable.
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6.发明申请公开(公告)号：US20140177089A1
公开(公告)日：2014-06-26
申请号：US13725054
申请日：2012-12-21
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Jung Wook Hur , Won Choul Yang , Haejung Lee
IPC: G11B5/455
Abstract: Technologies are described herein for recovering an instable head in a storage device using an internal head heater. An instability in the reader head may be detected, and, in response to detecting the instability, a thermal shock may be applied to the reader head utilizing the head heater to recover the head.
Abstract translation: 这里描述了用于使用内部头部加热器来恢复存储装置中的不稳定头部的技术。 可以检测读取器头部的不稳定性，并且响应于检测到不稳定性，可以利用头部加热器对读取头施加热冲击以恢复头部。
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