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公开(公告)号：US20160064015A1
公开(公告)日：2016-03-03
申请号：US14469134
申请日：2014-08-26
Applicant: Seagate Technology LLC
Inventor： Kirill Rivkin , Mourad Benakli , Huaqing Yin
CPC classification number: G11B5/3146 , G11B5/23 , G11B2005/0024
Abstract: A data writing device may be constructed and operated with at least a data writer that has at least a write pole and a magnetic feature. A controller may selectively activate the magnetic feature to magnetically oscillate and produce a radio frequency signal proximal the write pole on an air bearing surface (ABS).
Abstract translation: 数据写入装置可以至少具有至少写入磁极和磁性特征的数据写入器来构造和操作。 控制器可以选择性地激活磁性特征以磁性振荡并在空气轴承表面（ABS）上产生靠近写极的射频信号。
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公开(公告)号：US09251814B2
公开(公告)日：2016-02-02
申请号：US14144125
申请日：2013-12-30
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 provide a 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.
Abstract translation: 本文公开和要求保护的实施例提供了位于滑块中的写入头核心，该写入头核心包括可操作以用作写入极的第一端，可操作以用作返回极的第二端，其中第一端包括基本上较小的 横截面积大于第二端，并且其中写头芯具有基本平滑的曲率。
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公开(公告)号：US20150325261A1
公开(公告)日：2015-11-12
申请号：US14709705
申请日：2015-05-12
Applicant: Seagate Technology LLC
Inventor： Ruoxi Yang , James Gary Wessel , Rachel Frakie , Chubing Peng , Werner Scholz , Chris Rea , Zoran Jandric , Mourad Benakli , Tae-Woo Lee
CPC classification number: G11B5/6088 , G02B6/02042 , G02B6/02052 , G02B6/1226 , G02B2006/12121 , G11B5/3133 , G11B5/314 , G11B5/4866 , G11B7/24062 , G11B2005/0021
Abstract: An apparatus is includes a near field transducer positioned adjacent a media-facing surface and at the end of a waveguide having at least one core layer and a cladding layer. The apparatus also includes at least one optical reflector positioned adjacent opposing cross-track edges of the near field transducer and/or adjacent a down-track side of the near-field transducer.
Abstract translation: 一种装置包括邻近面向介质的表面定位的近场传感器，以及位于具有至少一个芯层和包覆层的波导的端部。 该装置还包括至少一个光学反射器，其位于近场换能器的相对的交叉轨道边缘附近和/或邻近近场换能器的下轨道侧。
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公开(公告)号：US20140269234A1
公开(公告)日：2014-09-18
申请号：US14144125
申请日：2013-12-30
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 provide a 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.
Abstract translation: 本文公开和要求保护的实施例提供了位于滑块中的写入头核心，该写入头核心包括可操作以用作写入极的第一端，可操作以用作返回极的第二端，其中第一端包括基本上较小的 横截面积大于第二端，并且其中写头芯具有基本平滑的曲率。
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公开(公告)号：US11450346B2
公开(公告)日：2022-09-20
申请号：US17151401
申请日：2021-01-18
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC: H01S5/024 , G11B7/1263 , H01S5/068 , H01S5/06 , H01S5/026 , H01S5/065 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/09 , H01S5/062 , G11B5/00
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.
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Patent Agency Ranking
公开(公告)号：US10540998B2
公开(公告)日：2020-01-21
申请号：US16399095
申请日：2019-04-30
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC: H01S5/065 , G11B7/1263 , H01S5/068 , H01S5/026 , H01S5/06 , G11B5/455 , G11B5/09 , G11B5/02 , G11B5/40 , G11B5/00 , H01S5/062 , H01S5/024
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.
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公开(公告)号：US09940965B2
公开(公告)日：2018-04-10
申请号：US15061166
申请日：2016-03-04
Applicant: Seagate Technology LLC
Inventor： Karim Tatah , Mourad Benakli , James Gary Wessel
IPC: G11B7/1263 , G11B5/09 , H01S5/068 , H01S5/06 , H01S5/026 , H01S5/065 , G11B5/02 , G11B5/40 , G11B5/455 , G11B5/00 , H01S5/024 , H01S5/062
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.
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公开(公告)号：US09905251B2
公开(公告)日：2018-02-27
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：US09837112B2
公开(公告)日：2017-12-05
申请号：US14709705
申请日：2015-05-12
Applicant: Seagate Technology LLC
Inventor： Ruoxi Yang , James Gary Wessel , Rachel Frakie , Chubing Peng , Werner Scholz , Chris Rea , Zoran Jandric , Mourad Benakli , Tae-Woo Lee
CPC classification number: G11B5/6088 , G02B6/02042 , G02B6/02052 , G02B6/1226 , G02B2006/12121 , G11B5/3133 , G11B5/314 , G11B5/4866 , G11B7/24062 , G11B2005/0021
Abstract: An apparatus is includes a near field transducer positioned adjacent a media-facing surface and at the end of a waveguide having at least one core layer and a cladding layer. The apparatus also includes at least one optical reflector positioned adjacent opposing cross-track edges of the near field transducer and/or adjacent a down-track side of the near-field transducer.
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公开(公告)号：US20140119163A1
公开(公告)日：2014-05-01
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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