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公开(公告)号：US09355677B2
公开(公告)日：2016-05-31
申请号：US14168970
申请日：2014-01-30
Applicant: Seagate Technology LLC
Inventor： Todd Michael Lammers , Housan Dakroub , Jason C. Jury
CPC classification number: G11B20/10018 , G11B5/02
Abstract: The implementations disclosed herein provide for a storage device including a preamplifier that dynamically adjusts at least one of a rise time and fall time of an analog write current pulse based on a length of a corresponding write transition and/or characteristics of a media location where the write transition is to be recorded.
Abstract translation: 本文公开的实现方案提供了一种存储设备，其包括前置放大器，其基于相应写入转变的长度和/或媒体位置的特性动态地调整模拟写入电流脉冲的上升时间和下降时间中的至少一个，其中 写入转换将被记录。
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公开(公告)号：US09997176B1
公开(公告)日：2018-06-12
申请号：US15791844
申请日：2017-10-24
Applicant: Seagate Technology LLC
Inventor： Wenzhong Zhu , Jason C. Jury , Alfredo Sam Chu
CPC classification number: G11B5/012 , G11B20/18 , G11B20/1879 , G11B27/36 , G11B2005/0021
Abstract: A recording medium is written to using an energy source that heats the medium during the writing. A read error in a sector is determined when reading via a read transducer. While traversing a part of the recording medium that includes data, a write coil is activated before attempting to re-read the sector. The energy source does not heat the recording medium sufficiently to change a state of the data during the activation of the write coil. The activation of the write coil removes a magnetic instability of the read transducer.
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3.发明授权System and method for detecting reader-writer offset in a heat-assisted magnetic recording head 有权用于在热辅助磁记录头中检测读写器偏移的系统和方法公开(公告)号：US09564157B1
公开(公告)日：2017-02-07
申请号：US14832186
申请日：2015-08-21
Applicant: Seagate Technology LLC
Inventor： Jon Trantham , Tim Rausch , Jason C. Jury , Mark Allen Gaertner
CPC classification number: G11B5/59627 , G11B5/314 , G11B7/00 , G11B7/00745 , G11B11/10532 , G11B11/10543 , G11B11/10558 , G11B11/1058 , G11B2005/0021 , G11B2220/2525
Abstract: An apparatus comprises a heat-assisted magnetic recording head configured to write to and read from a magnetic recording medium. The head comprises a reader and a writer including a near-field transducer (NFT). The reader comprises a center which is laterally offset relative to a center of the writer to define a reader-writer offset (RWO) therebetween. A magnetic recording medium comprises a plurality of tracks. The plurality of tracks comprises at least one track used as a region to test for a shift in the RWO. A processor is coupled to the recording head and configured to detect the RWO shift.
Abstract translation: 一种装置包括被配置为写入和从磁记录介质读取的热辅助磁记录头。 头包括读取器和包括近场换能器（NFT）的写入器。 读取器包括相对于写入器的中心横向偏移的中心，以在其间限定读取器 - 写入器偏移（RWO）。 磁记录介质包括多个轨迹。 多个轨道包括用作测试RWO中的移位的区域的至少一个轨道。 处理器耦合到记录头并被配置为检测RWO移位。
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4.发明授权Adjusting track spacing for heat assisted recording medium according to reader to-reader separation 有权根据读写器分离，调整热辅助记录介质的轨迹间距公开(公告)号：US09460741B1
公开(公告)日：2016-10-04
申请号：US14862937
申请日：2015-09-23
Applicant: Seagate Technology LLC
Inventor： Jon D. Trantham , Tim Rausch , Jason C. Jury
CPC classification number: G11B5/581 , G11B5/012 , G11B5/02 , G11B5/3945 , G11B5/397 , G11B5/4826 , G11B5/4886 , G11B2005/0021 , G11B2020/1292 , G11B2020/1298
Abstract: Two or more reader sensors are commonly mounted on a read/write head that is configured to read data from a heat-assisted recording medium. For a region of the recording medium, a separation is determined for the reader sensors. A track spacing that provides a target areal density for the region is determined. The track spacing for the region is adjusted to approach a predetermined ratio of the separation.
Abstract translation: 两个或多个读取器传感器通常安装在读/写头上，读/写头被配置为从热辅助记录介质读取数据。 对于记录介质的区域，确定读取器传感器的分离。 确定提供区域的目标区域密度的轨道间距。 调整该区域的轨道间距以接近预定比例的分离。
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Patent Agency Ranking
公开(公告)号：US20150213813A1
公开(公告)日：2015-07-30
申请号：US14168970
申请日：2014-01-30
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Todd Michael Lammers , Housan Dakroub , Jason C. Jury
IPC: G11B5/027
CPC classification number: G11B20/10018 , G11B5/02
Abstract: The implementations disclosed herein provide for a storage device including a preamplifier that dynamically adjusts at least one of a rise time and fall time of an analog write current pulse based on a length of a corresponding write transition and/or characteristics of a media location where the write transition is to be recorded.
Abstract translation: 本文公开的实现方案提供了一种存储设备，其包括前置放大器，其基于相应写入转变的长度和/或媒体位置的特性动态地调整模拟写入电流脉冲的上升时间和下降时间中的至少一个，其中 写入转换将被记录。
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公开(公告)号：US08913341B1
公开(公告)日：2014-12-16
申请号：US13956043
申请日：2013-07-31
Applicant: Seagate Technology LLC
Inventor： Jason C. Jury , Michael J. Link
CPC classification number: G11B20/10046
Abstract: Multiple signals are read, respectively, from multiple different cross-track positions of a track of a magnetic medium. Weighting coefficients for each of the multiple signals are determined. The weighting coefficients are applied to the respective signals to form weighted signals. The weighted signals are combined and the combined signal is used to recover data stored in the track.
Abstract translation: 分别从磁介质的磁道的多个不同的交叉轨道位置读取多个信号。 确定多个信号中的每一个的加权系数。 加权系数被施加到各个信号以形成加权信号。 加权信号被组合，并且组合信号用于恢复存储在轨道中的数据。
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公开(公告)号：US09875763B1
公开(公告)日：2018-01-23
申请号：US15332475
申请日：2016-10-24
Applicant: Seagate Technology LLC
Inventor： Jason C. Jury , Siong Liu , Joshua W. Christensen
CPC classification number: G11B5/59627 , G11B5/59688 , G11B20/1816 , G11B2020/183
Abstract: Method and apparatus for recovering user data from a rotatable data recording medium. In some embodiments, a moveable read element detects at least one uncorrectable read error in user data stored in a data sector arranged along a concentric track. A read retry operation is carried out to recover the user data by radially advancing the moveable read element from a first offset value to a different second offset value with respect to the track in accordance with a trajectory profile while transducing the user data from the data sector. This allows data that are variably overwritten (encroached upon) by different radial amounts from an adjacent track to be recovered.
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公开(公告)号：US09601142B1
公开(公告)日：2017-03-21
申请号：US15171847
申请日：2016-06-02
Applicant: Seagate Technology LLC
Inventor： Jason C. Jury , Xiong Liu , Quan Li
CPC classification number: G11B5/59688 , G11B20/1217 , G11B2020/1238 , G11B2020/1281 , G11B2020/1292
Abstract: Method and apparatus for storing and retrieving user data from magnetic recording tracks in a data storage device. In some embodiments, a rotatable data recording medium has a circumferentially extending data track formed from spaced apart embedded servo wedges that extend radially across a recording surface of the medium to define intervening data wedges between each adjacent pair of the servo wedges. Each data wedge along the data track has only a single timing field at a beginning portion of the data wedge immediately adjacent a first servo wedge, followed by a plurality of data sectors that extend across the data wedge to an end portion of the data wedge immediately adjacent a second servo wedge. No inter-sector gaps are provided between the respective data sectors and no additional timing fields are provided between the first and second servo wedges.
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9.发明授权Magnetic read head with multiple read transducers each having different design characteristics 有权磁读头具有多个读取传感器，每个读取传感器具有不同的设计特性公开(公告)号：US09401161B1
公开(公告)日：2016-07-26
申请号：US14644614
申请日：2015-03-11
Applicant: Seagate Technology LLC
Inventor： Jason C. Jury , Ara Patapoutian , Xiong Liu , Myint Ngwe , Quan Li
CPC classification number: G11B5/02 , G11B5/3974 , G11B5/4886 , G11B15/12 , G11B15/125 , G11B20/10009 , G11B20/10481
Abstract: Data is read from a track of a magnetic recording medium via multiple read transducers located at different positions on a read head. The multiple read transducers are substantially positioned over the track when reading the track. The multiple read transducers have different design characteristics manifesting in differences in at least one of magnetic and electrical behavior of the multiple read transducers. One or more signals originating from the multiple read transducers are combined to assist in decoding the data.
Abstract translation: 通过位于读取头上的不同位置的多个读取换能器从磁记录介质的磁道读取数据。 当读取轨道时，多个读取换能器基本上定位在轨道的上方。 多个读取传感器具有不同的设计特征，其表现为多个读取换能器的磁性和电气行为中的至少一个的差异。 来自多个读取换能器的一个或多个信号被组合以帮助解码数据。
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