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公开(公告)号：US09934795B1
公开(公告)日：2018-04-03
申请号：US15618315
申请日：2017-06-09
Applicant: Seagate Technology LLC
Inventor： Kirill Aleksandrovich Rivkin , Mourad Benakli , Hua Zhou , Huaqing Yin , Tae-Woo Lee
CPC classification number: G11B5/3146 , G11B5/1278 , G11B5/17 , G11B5/314 , G11B5/315 , G11B2005/0021
Abstract: A recording head has a near-field transducer at a media-facing surface of the recording head and a write pole on a first side of the near field transducer. A first coil induces a first flux in the write pole. The recording head includes a shield on a second side of the near-field transducer that faces away from the first side. A second coil is proximate the shield and induces a second flux in the shield that controls a field angle of the first flux.
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公开(公告)号：US09922669B2
公开(公告)日：2018-03-20
申请号：US14981470
申请日：2015-12-28
Applicant: Seagate Technology LLC
Inventor： Kirill Rivkin , Ned Tabat , Mourad Benakli , Michael A. Seigler
CPC classification number: G11B5/1272 , G11B5/3116 , G11B5/312 , G11B5/3163 , G11B2005/0021 , Y10T29/49048
Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.
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公开(公告)号：US20170236534A1
公开(公告)日：2017-08-17
申请号：US15043801
申请日：2016-02-15
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Michael R. Montemorra , Ralph W. Cross , Todd M. Lammers , Quan Li , Beng Theam Ko , Kirill Rivkin , Mourad Benakli
CPC classification number: G11B5/09 , G11B5/012 , G11B20/10027 , G11B20/1217 , G11B20/1426
Abstract: Method and apparatus for enhancing write current switching efficiencies during data write operations in a data storage device. In some embodiments, write data are described in the form a sequence of symbols of nT length where T is a channel clock rate and n is an integer over a selected range. Bi-directional write currents are applied to a write element to record the sequence of symbols to a storage medium. The write currents are switched between a first rail current and a second rail current for alternating symbols. The write currents are further transitioned to an intermediate current value for at least one channel clock period immediately preceding a next occurrence of a symbol boundary between an adjacent pair of symbols in the sequence.
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公开(公告)号：US09728223B2
公开(公告)日：2017-08-08
申请号：US14525414
申请日：2014-10-28
Applicant: Seagate Technology LLC
Inventor： Mehmet Fatih Erden , Mourad Benakli
IPC: G11B20/12
CPC classification number: G11B20/1252 , G11B20/1217 , G11B20/1254 , G11B2020/1292 , G11B2220/2508 , G11B2220/2516
Abstract: Host data to be written to a recording medium is categorized as one of sequential data or random data. The sequential data is written to a first track width on the recording medium. The random data is written to a second track width on the recording medium, the second track width being larger than the first track width.
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45.发明申请THERMAL MANAGEMENT OF LASER DIODE MODE HOPPING FOR HEAT ASSISTED MEDIA RECORDING 有权激光二极管模式热管理热辅助介质记录的热管理公开(公告)号：US20160087402A1
公开(公告)日：2016-03-24
申请号：US14492802
申请日：2014-09-22
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Mourad Benakli , James Gary Wessel
CPC classification number: G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/0612 , H01S5/0617 , H01S5/06216 , H01S5/0651 , H01S5/06804 , H01S5/06808
Abstract: A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.
Abstract translation: 一种方法和装置，用于在激光二极管以促进热辅助磁记录的激光状态下操作时确定激光二极管的结点处的温度，将结温和在激光期间提供的注入电流与存储的组合进行比较 的结温和注入电流，并且基于与存储的结温和注入电流的组合的比较，确定在激光状态期间激光二极管发生模式跳变的可能性。
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Patent Agency Ranking
46.发明授权Thermal management of laser diode mode hopping for heat assisted media recording 有权热辅助介质记录激光二极管模式跳变的热管理公开(公告)号：US09281659B1
公开(公告)日：2016-03-08
申请号：US14492802
申请日：2014-09-22
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Mourad Benakli , James Gary Wessel
CPC classification number: G11B7/1263 , G11B5/02 , G11B5/09 , G11B5/40 , G11B5/455 , G11B2005/0021 , H01S5/02453 , H01S5/0261 , H01S5/0612 , H01S5/0617 , H01S5/06216 , H01S5/0651 , H01S5/06804 , H01S5/06808
Abstract: A method and apparatus provide for determining a temperature at a junction of a laser diode when the laser diode is operated in a lasing state that facilitates heat-assisted magnetic recording, comparing the junction temperature and an injection current supplied during the lasing state to stored combinations of junction temperature and injection current, and determining a likelihood of mode hopping occurring for the laser diode during the lasing state based on the comparison to stored combinations of junction temperature and injection current.
Abstract translation: 一种方法和装置，用于在激光二极管以促进热辅助磁记录的激光状态下操作时确定激光二极管的结点处的温度，将结温和在激光期间提供的注入电流与存储的组合进行比较 的结温和注入电流，并且基于与存储的结温和注入电流的组合的比较，确定在激光状态期间激光二极管发生模式跳变的可能性。
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公开(公告)号：US20160019916A1
公开(公告)日：2016-01-21
申请号：US14800919
申请日：2015-07-16
Applicant: Seagate Technology LLC
Inventor： Kirill Rivkin , Mourad Benakli , Huaqing Yin
CPC classification number: G11B5/17 , G11B5/1278 , G11B5/3116 , G11B5/3123 , G11B5/6082
Abstract: A data writer may be configured with at least a write pole and a continuous coil with the continuous coil having a first turn with a first cross-sectional shape and a second turn with a second cross-sectional shape that differs from the first cross-sectional shape. The second turn may be positioned proximal a leading edge of the write pole and an air bearing surface while the first turn is positioned distal the air bearing surface.
Abstract translation: 数据写入器可以被配置为具有至少写入磁极和连续线圈，其中连续线圈具有具有第一横截面形状的第一匝和具有与第一横截面不同的第二横截面形状的第二匝 形状。 第二转可以位于书写杆的前缘附近和空气轴承表面，同时第一转向位于空气轴承表面的远侧。
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48.发明申请STORING RANDOM AND SEQUENTIAL DATA ON DIFFERENT TRACK WIDTHS OF A RECORDING MEDIUM 审中-公开在记录介质的不同轨迹宽度上存储随机和顺序数据公开(公告)号：US20150043100A1
公开(公告)日：2015-02-12
申请号：US14525414
申请日：2014-10-28
Applicant: Seagate Technology LLC
Inventor： Mehmet Fatih Erden , Mourad Benakli
IPC: G11B20/12
CPC classification number: G11B20/1252 , G11B20/1217 , G11B20/1254 , G11B2020/1292 , G11B2220/2508 , G11B2220/2516
Abstract: Host data to be written to a recording medium is categorized as one of sequential data or random data. The sequential data is written to a first track width on the recording medium. The random data is written to a second track width on the recording medium, the second track width being larger than the first track width.
Abstract translation: 要写入记录介质的主机数据被分类为顺序数据或随机数据之一。 将顺序数据写入记录介质上的第一轨道宽度。 随机数据被写入记录介质上的第二磁道宽度，第二磁道宽度大于第一磁道宽度。
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公开(公告)号：US08937852B2
公开(公告)日：2015-01-20
申请号：US14136773
申请日：2013-12-20
Applicant: Seagate Technology LLC
Inventor： Kirill Aleksandrovich Rivkin , Mourad Benakli , Ned Tabat
CPC classification number: G11B5/1871 , G11B5/3116 , G11B5/3123 , G11B5/314 , G11B13/045 , G11B2005/0021 , Y10T29/49032
Abstract: In an example, a method comprises aligning a central axis of a paddle portion on a write pole circuit to be substantially perpendicular to an adjacent magnetic surface, and bending a central axis of an extended tip portion relative to the central axis of the paddle portion. In another example, a transducer head comprises a write pole circuit having a paddle portion with a central axis, and an extended tip portion with a central axis, the central axis of the extended tip portion angled from the central axis of the paddle portion. In another example, a magnetic circuit comprises a write pole circuit having a paddle portion and an extended tip portion, the extended tip portion bending away from a central axis of the paddle portion, and a coil wrapping around the extended tip portion.
Abstract translation: 在一个示例中，一种方法包括将写极电路上的桨形部分的中心轴线基本上垂直于相邻的磁性表面，并且相对于桨形部分的中心轴线弯曲延伸尖端部分的中心轴线。 在另一示例中，换能器头包括具有中心轴线的桨叶部分和具有中心轴线的延伸尖端部分的写入极电极，延伸尖端部分的中心轴线从桨叶部分的中心轴线成角度。 在另一个例子中，磁路包括一个写极电路，它具有一个桨叶部分和一个延伸的尖端部分，该延伸的尖端部分从桨叶部分的中心轴线弯曲，以及围绕该延伸尖端部分卷绕的线圈。
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公开(公告)号：US20130141820A1
公开(公告)日：2013-06-06
申请号：US13690705
申请日：2012-11-30
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kaizhong Gao , Mourad Benakli
IPC: G11B5/127
CPC classification number: G11B5/127 , G11B5/1278 , G11B5/3116 , G11B5/315
Abstract: A write element for magnetic recording includes a main pole and a shield. The main pole has first and second sides with respect to a down-track direction. The shield at least partially surrounds the main pole with a continuously concave inner sidewall. The angle between the inner sidewall of the shield and the direction of motion of the write element is greater than the angle between the sides of the main pole and the direction of motion.
Abstract translation: 用于磁记录的写入元件包括主极和屏蔽。 主杆相对于下轨方向具有第一和第二侧。 屏蔽件至少部分地围绕主极具有连续凹入的内侧壁。 屏蔽件的内侧壁与写入元件的运动方向之间的角度大于主极的侧面与运动方向之间的角度。
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