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1.发明授权Adaptive mitigation of adjacent track interference (ATI) on a recording medium 有权在记录介质上自适应减轻相邻轨道干扰（ATI）公开(公告)号：US09099155B1
公开(公告)日：2015-08-04
申请号：US14448844
申请日：2014-07-31
Applicant: Seagate Technology LLC
Inventor： Abhay Kataria , Michael D. Schaff , Sandeep Bhushan , Kevin M. Bailey , Phillip Kevin McGinnis , Mai Ghaly
CPC classification number: G11B20/18 , G11B5/02 , G11B5/5565 , G11B20/10009 , G11B27/36
Abstract: Apparatus and method for adaptively mitigating adjacent track interference (ATI) effects on a data recording medium. In some embodiments, a write count value is accumulated for a first track responsive to successive writes to a second track on the data recording medium. For each of the successive writes, the accumulated write count value for the first track is incremented by a different variable amount based on temperature. The first track is refreshed responsive to the accumulated write count reaching a selected threshold value.
Abstract translation: 用于自适应地减轻对数据记录介质的相邻轨道干扰（ATI）影响的装置和方法。 在一些实施例中，响应于对数据记录介质上的第二磁道的连续写入，针对第一磁道累积写入计数值。 对于每个连续写入，基于温度，第一轨道的累积写入计数值增加不同的可变量。 响应于达到所选择的阈值的累积写入次数来刷新第一轨道。
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公开(公告)号：US12288574B1
公开(公告)日：2025-04-29
申请号：US18615310
申请日：2024-03-25
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Sandeep Bhushan , Lewis Scott Kessinger Patterson , Phillip Kevin McGinnis , Piengphen Swangsmutchai
Abstract: A method for calibrating a hard drive having a heat-assisted magnetic recording head is provided. The method includes performing, across an increasing temperature ramp, a first set of write/read operations using the head, performing, across a decreasing temperature ramp, a second set of write/read operations using the head, generating performance data associated with the head based on the first set of write/read operations and the second set of write/read operations, calculating a comparison value based on the performance data associated with the head and performance data associated with a plurality of heads, and adjusting an operating parameter value of the head based on the comparison value exceeding a threshold, the adjusted operating parameter reducing a likelihood that a laser of the head will exhibit write instability.
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公开(公告)号：US20140085745A1
公开(公告)日：2014-03-27
申请号：US13627763
申请日：2012-09-26
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kevin David Powers , Sandeep Bhushan , James J. Martin , Prasanna Manja Ramakrishna , Dale Thomas Riley , Vance Charles Kluver , Scott Howard Deits
CPC classification number: G11B5/6076 , G11B5/40 , G11B5/607
Abstract: The present application discloses a transducer head comprising a read element that reads data from a storage media and an asperity sensor that detects a dimension of an asperity on a surface of the storage media using a temperature change at the asperity sensor. The asperity may be one or both of a void in the surface of the storage media and a protrusion from the surface of the storage media.
Abstract translation: 本申请公开了一种换能器头，其包括从存储介质读取数据的读取元件和使用在凹凸传感器处的温度变化来检测存储介质的表面上的凹凸的尺寸的粗糙度传感器。 凹凸可以是存储介质的表面中的空隙和从存储介质的表面的突起中的一个或两个。
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公开(公告)号：US08681438B1
公开(公告)日：2014-03-25
申请号：US13627763
申请日：2012-09-26
Applicant: Seagate Technology LLC
Inventor： Kevin David Powers , Sandeep Bhushan , James J. Martin , Prasanna Manja Ramakrishna , Dale Thomas Riley , Vance Charles Kluver , Scott Howard Deits
IPC: G11B5/02
CPC classification number: G11B5/6076 , G11B5/40 , G11B5/607
Abstract: The present application discloses a transducer head comprising a read element that reads data from a storage media and an asperity sensor that detects a dimension of an asperity on a surface of the storage media using a temperature change at the asperity sensor. The asperity may be one or both of a void in the surface of the storage media and a protrusion from the surface of the storage media.
Abstract translation: 本申请公开了一种换能器头，其包括从存储介质读取数据的读取元件和使用在凹凸传感器处的温度变化来检测存储介质的表面上的凹凸的尺寸的粗糙度传感器。 凹凸可以是存储介质的表面中的空隙和从存储介质的表面的突起中的一个或两个。
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