中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

45 records (took 0.017 seconds)

    Fast partial erasure for drive sanitization
    1.
    发明授权
    Fast partial erasure for drive sanitization 有权

    公开(公告)号：US12131758B2

    公开(公告)日：2024-10-29

    申请号：US18223896

    申请日：2023-07-19

    Applicant: Seagate Technology LLC

    Inventor： Xiong Liu ,  Lihong Zhang ,  Quan Li ,  Wenxiang Xie

    IPC: G11B5/265 ,  G11B5/55

    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.

    Skew-independent close-point transducers
    2.
    发明授权
    Skew-independent close-point transducers 有权

    公开(公告)号：US11830530B1

    公开(公告)日：2023-11-28

    申请号：US17573313

    申请日：2022-01-11

    Applicant: Seagate Technology LLC

    Inventor： Lihong Zhang ,  Xiong Liu ,  Yanming Tan

    IPC: G11B5/60

    CPC classification number: G11B5/6082

    Abstract: A slider for use in a disk drive includes a substrate surface to be spaced from recording media surface within the disk drive, at least one read/write transducer having a transducer end surface adjacent and proximate to the substrate surface, a protrusion controller associated with the at least one read/write transducer. The transducer end surface includes a preformed protrusion extending generally in a direction perpendicular to the substrate surface, the protrusion is substantially centered along the transducer end surface, and the protrusion formed to passively provide a consistently-positioned close-point to the recording media surface when the protrusion controller is active.

    Microwave-assisted magnetic recording apparatus and method
    5.
    发明授权
    Microwave-assisted magnetic recording apparatus and method 有权

    公开(公告)号：US10482912B1

    公开(公告)日：2019-11-19

    申请号：US16249438

    申请日：2019-01-16

    Applicant: Seagate Technology LLC

    Inventor： Xiong Liu ,  Lihong Zhang ,  PengBoon Khoo

    IPC: G11B5/09 ,  G11B5/596 ,  G11B20/10 ,  G11B5/00

    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.

    Adaptive cleaning of a media surface responsive to a mechanical disturbance event
    6.
    发明授权
    Adaptive cleaning of a media surface responsive to a mechanical disturbance event 有权

    公开(公告)号：US10199067B1

    公开(公告)日：2019-02-05

    申请号：US15934243

    申请日：2018-03-23

    Applicant: Seagate Technology LLC

    Inventor： Swee Chuan Samuel Gan ,  Lihong Zhang ,  Xiong Liu ,  ChengYi Guo

    IPC: G11B5/09 ,  G11B23/50 ,  G11B20/18 ,  G11B23/02 ,  G11B5/012

    Abstract: Apparatus and method for proactively cleaning a data storage surface subjected to a mechanical disturbance. In some embodiments, data access commands are serviced by a data storage device to transfer user data between a host device and a rotatable data recording surface using a radially moveable data transducer. A media cleaning operation is scheduled and performed in response to the detection of a mechanical disturbance event externally applied to the data storage device. The media cleaning operation involves sweeping the data transducer across the data recording surface from a first radius to a second radius over a selected time duration. The entirety of the data recording surface is swept if sufficient time is available between pending commands to maintain a desired host data transfer rate. Otherwise, a partial cleaning operation is scheduled in which portions of the recording surface are successively cleaned between the servicing of the pending commands.

    Head slider with adjusted thermal profile
    7.
    发明授权
    Head slider with adjusted thermal profile 有权
    头部滑块，带有调节的热分布

    公开(公告)号：US09153265B1

    公开(公告)日：2015-10-06

    申请号：US14466141

    申请日：2014-08-22

    Applicant: Seagate Technology LLC

    Inventor： Xiong Liu ,  Lihong Zhang ,  Samuel Gan ,  Shashwat Shukla

    IPC: G11B5/60

    CPC classification number: G11B5/60 ,  G11B5/10 ,  G11B5/6082 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: A slider generally comprises a substrate forming at least part of a body of the slider, a heat-assisted media recording (HAMR) read/write transducer proximate the substrate, and an end cap substantially encapsulating the HAMR read/write transducer. The end cap has a first surface proximate the substrate and a second surface as a trailing edge of the slider. The end cap has a first coefficient of thermal expansion (CTE) similar to a corresponding CTE of the substrate. At least a portion of the second surface of the end cap has a second CTE that is lower than the first CTE. A body of the end cap is intermediate to the first and second surfaces of the end cap and has a CTE intermediate of the first and second CTE.

    Abstract translation: 滑动器通常包括形成滑块的主体的至少一部分的基板，靠近基板的热辅助介质记录（HAMR）读/写换能器，以及基本上封装HAMR读/写换能器的端盖。 端盖具有靠近基板的第一表面和作为滑块的后缘的第二表面。 端盖具有类似于衬底的相应CTE的第一热膨胀系数（CTE）。 端盖的第二表面的至少一部分具有低于第一CTE的第二CTE。 端盖的主体位于端盖的第一和第二表面的中间，并且具有第一和第二CTE的CTE中间体。

    REDUCED THICKNESS COMPONENTS FOR HARD DISK DRIVES
    8.
    发明公开
    REDUCED THICKNESS COMPONENTS FOR HARD DISK DRIVES 审中-公开

    公开(公告)号：US20230154501A1

    公开(公告)日：2023-05-18

    申请号：US17526448

    申请日：2021-11-15

    Applicant: Seagate Technology LLC

    Inventor： Xiong Liu ,  Lihong Zhang

    IPC: G11B33/02

    CPC classification number: G11B33/027

    Abstract: A hard disk drive includes a base and a cover coupled together to create an enclosure and an actuator assembly positioned in the enclosure. The actuator assembly includes a body and arms extending from the body, and the arms comprise a reinforced aluminum alloy. Magnetic recording disks are respectively positioned between pairs of the arms.

    DATA STORAGE DEVICE REDEPLOYMENT
    9.
    发明申请
    DATA STORAGE DEVICE REDEPLOYMENT 有权

    公开(公告)号：US20230090277A1

    公开(公告)日：2023-03-23

    申请号：US17479239

    申请日：2021-09-20

    Applicant: Seagate Technology LLC

    Inventor： Lihong Zhang ,  Xiong Liu ,  Hong Geok Toh

    IPC: G06F3/06

    Abstract: Systems and methods are disclosed for data storage redeployment. For example, a controller of a data storage array can implement a process to determine when, or if, to redeploy a data storage device from a first data storage usage or tier having a first performance requirement to a second data storage usage or tier having a second performance requirement. In some embodiments, the first data storage tier performance requirement is for hot-data storage, and the second data storage tier performance requirement is for cold-data storage. Various criterion (e.g., a data storage device performance metric) threshold, such as a workload (e.g., LBAs written, LBAs read, or both) of the data storage device or bit error rate (BER), may be utilized in a redeployment determination.

Patent Agency Ranking