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公开(公告)号：US09542965B2
公开(公告)日：2017-01-10
申请号：US14677055
申请日：2015-04-02
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Lihong Zhang
CPC classification number: G11B5/56 , G11B5/5539 , G11B20/1217 , G11B2020/1238 , G11B2020/1292
Abstract: A data storage device may be configured with at least a transducing head separated from a data storage medium. The transducing head can have a data reader and data writer. A plurality of data bits may be arranged in first and second shingled data tracks on the data storage medium. The data writer can be configured with a writer centerline aligned with a track centerline of the first shingled data track and a data reader having a reader centerline skewed with respect to the track and writer centerlines.
Abstract translation: 数据存储装置可以配置有至少与数据存储介质分离的换能头。 转换头可以具有数据读取器和数据写入器。 可以在数据存储介质上的第一和第二带状数据轨道中布置多个数据位。 数据写入器可以配置有与第一带状数据轨道的轨道中心线对准的写入器中心线和具有相对于轨道和写入器中心线倾斜的读取器中心线的数据读取器。
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公开(公告)号：US09202511B1
公开(公告)日：2015-12-01
申请号：US14307130
申请日：2014-06-17
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Xiong Liu , Chris M. Woldemar , Lihong Zhang , ShuangQuan Min
CPC classification number: G11B19/28 , G11B5/6011 , G11B5/607 , G11B19/046
Abstract: Provided is an apparatus including a motor configured to rotate a rotating member at a rotational speed based on an applied current; and a controller configured to modify one or more operating parameters in response to determining whether a change in an environment has occurred based on the applied current.
Abstract translation: 提供了一种装置，其包括：马达，被配置为基于所施加的电流以旋转速度旋转旋转构件; 以及控制器，被配置为响应于基于所施加的电流确定是否已经发生环境变化而修改一个或多个操作参数。
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公开(公告)号：US20150147592A1
公开(公告)日：2015-05-28
申请号：US14087785
申请日：2013-11-22
Applicant: Seagate Technology LLC
Inventor： Michael Seigler , Weibin Chen , Werner Scholz , Jan Ulrich Thiele , Lihong Zhang , Xiong Liu , Shashwat Shukla
CPC classification number: G11B5/72 , G11B5/82 , G11B2005/0021 , G11B2220/23 , Y10T428/11 , Y10T428/115 , Y10T428/1164 , Y10T428/1193
Abstract: An apparatus that includes a storage layer and a heating assistance element. The heating assistance element is adjacent to the storage layer or doped into the storage layer. The heating assistance element is configured to enhance spatial confinement of energy from a field to an area of the storage layer to which the field is applied.
Abstract translation: 一种包括存储层和加热辅助元件的装置。 加热辅助元件与存储层相邻或掺入到存储层中。 加热辅助元件被配置为增强能量从场到被施加场的存储层的区域的空间限制。
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公开(公告)号：US20140140180A1
公开(公告)日：2014-05-22
申请号：US13777696
申请日：2013-02-26
Applicant: Seagate Technology LLC
Inventor： Lihong Zhang , Samuel Gan
IPC: G11B5/72
CPC classification number: G11B5/72 , G11B5/8408
Abstract: Apparatus for recording data and method for making the same. In accordance with some embodiments, a magnetic recording layer is adapted to store data along perpendicular magnetic domains. A protective overcoat layer is formed on the magnetic recording layer to substantially protect the magnetic recording layer from environmental effects. The protective overcoat layer is made of carbon intermixed with at least one transition metal, such as but not limited to chromium.
Abstract translation: 用于记录数据的装置及其制造方法。 根据一些实施例，磁记录层适于沿着垂直磁畴存储数据。 在磁记录层上形成保护性外涂层，以基本上保护磁记录层免受环境影响。 保护性外涂层由与至少一种过渡金属（例如但不限于铬）混合的碳制成。
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公开(公告)号：US20240087598A1
公开(公告)日：2024-03-14
申请号：US18223896
申请日：2023-07-19
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Lihong Zhang , Quan Li , Wenxiang Xie
CPC classification number: G11B5/2654 , G11B5/5547
Abstract: A method involves determining a threshold error rate that will result on data stored on a magnetic disk surface of a disk drive being unrecoverable. The method also involves determining a seek velocity that will overwrite sufficient portions of the data such the data will exhibit at least the threshold error rate. The disk drive performs at least one traversal of the magnetic disk surface with a head of the disk drive that emits an erase field during the at least one traversal at the seek velocity. The at least one traversal sanitizes the data.
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Patent Agency Ranking
公开(公告)号：US11270739B1
公开(公告)日：2022-03-08
申请号：US17171047
申请日：2021-02-09
Applicant: Seagate Technology LLC
Inventor： Lihong Zhang , Xiong Liu
Abstract: The present disclosure relates to electronic devices that include one or more solid reactants that react with one or more of water vapor and carbon dioxide gas to form a gaseous oxidizing agent component within the electronic device. In some embodiments, the electronic devices include a solid carrier that includes the one or more reactants. The present disclosure also relates to electronic devices that include a container that includes the one or more reactants in a manner that the gaseous oxidizing component can transfer from the container to the interior gas space of the electronic device. The present disclosure also involves related methods.
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公开(公告)号：US10755736B2
公开(公告)日：2020-08-25
申请号：US16524544
申请日：2019-07-29
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Lihong Zhang , PengBoon Khoo
Abstract: A magnetic recording medium includes a recording surface comprising a first recording layer having a first ferromagnetic resonant frequency and a second recording layer having a second ferromagnetic resonant frequency. The first recording layer is configured for storing user data and the second recording layer configured for storing servo data. A recording head arrangement is configured for microwave-assisted magnetic recording (MAMR) and writing user data to the first recording layer. The recording head arrangement comprises a write pole configured to generate a write magnetic field, and a write-assist arrangement proximate the write pole. The write-assist arrangement is configured to generate a radiofrequency assist magnetic field at a frequency that corresponds to the first ferromagnetic resonant frequency. A reader of the recording head arrangement is configured to read combined signals from the first and second recording layers.
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38.发明授权公开(公告)号：US10446182B1
公开(公告)日：2019-10-15
申请号：US16008760
申请日：2018-06-14
Applicant: Seagate Technology LLC
Inventor： Lihong Zhang , Xiong Liu , Samuel Swee Chuan Gan
IPC: G11B11/105 , G11B5/60 , G11B5/48 , G11B5/00
Abstract: Apparatus and method for heat assisted magnetic recording (HAMR). In some embodiments, a write element has a magnetic write coil that writes a magnetic pattern to a recording layer of a data recording surface. A light delivery mechanism imparts heat in the form of electromagnetic energy to the data recording layer during operation of the write element. A radiation detector detects radiation power emitting from the recording layer responsive to the operation of the light delivery mechanism. A control circuit determines a direct temperature of the recording layer responsive to the detected radiation power, and as necessary, adjusts a power input to the light delivery mechanism responsive to the determined temperature. The radiation detector may be an infrared photodetector with a graphene-based detection layer. The photodetector may be disposed between a write pole and a return pole of the write element.
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公开(公告)号：US20190250887A1
公开(公告)日：2019-08-15
申请号：US15894116
申请日：2018-02-12
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Lihong Zhang , WenXiang Xie , Quan Li
IPC: G06F7/58
Abstract: Apparatuses and methods disclosed herein relate to detecting a signal generated by a spin torque oscillator (STO). The signal is outputted, wherein the signal includes a direct current (DC) component, a wide bandwidth noise component, and an STO oscillating radio frequency (RF) component. The signal is filtered, wherein the filtering removes the DC component and the STO oscillating RF component, leaving the wide bandwidth noise component. A value of the wide bandwidth noise component is converted into a binary value, and a bit from the binary value is selected and combined with another bit to form a random number.
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公开(公告)号：US10249332B1
公开(公告)日：2019-04-02
申请号：US16013193
申请日：2018-06-20
Applicant: Seagate Technology LLC
Inventor： Xiong Liu , Lihong Zhang , PengBoon Khoo
Abstract: A magnetic recording medium includes a recording surface comprising a first recording layer having a first ferromagnetic resonant frequency and a second recording layer having a second ferromagnetic resonant frequency. The first recording layer is configured for storing user data and the second recording layer configured for storing servo data. A recording head arrangement is configured for microwave-assisted magnetic recording (MAMR) and writing user data to the first recording layer. The recording head arrangement comprises a write pole configured to generate a write magnetic field, and a write-assist arrangement proximate the write pole. The write-assist arrangement is configured to generate a radiofrequency assist magnetic field at a frequency that corresponds to the first ferromagnetic resonant frequency. A reader of the recording head arrangement is configured to read combined signals from the first and second recording layers.
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