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    Magnetic disk device and DOL setting method
    1.
    发明授权
    Magnetic disk device and DOL setting method 有权

    公开(公告)号：US11817123B2

    公开(公告)日：2023-11-14

    申请号：US17888255

    申请日：2022-08-15

    申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

    发明人： Nobuhiro Maeto

    IPC分类号： G11B20/18 ,  G11B20/12 ,  G11B5/09

    CPC分类号： G11B20/12 ,  G11B5/09 ,  G11B2020/1222

    摘要： According to one embodiment, a magnetic disk device including a disk, a head which writes data to the disk and reads data from the disk, and a controller which sets a first DOL for a first sector group and a second DOL for a second sector group to different values, the first sector group including one or more first sectors and a first parity sector, the first sectors which allow an error correction process to be performed for each track based on the first parity sector, and are continuously arranged in a circumferential direction of the disk from the first parity sector, the second sector group including one or more second sectors which allow no error correction process to be performed for each track, and are continuously arranged in the circumferential direction.

    Error Correction for Storage Devices
    7.
    发明申请
    Error Correction for Storage Devices 审中-公开
    存储设备的错误更正

    公开(公告)号：US20160078898A1

    公开(公告)日：2016-03-17

    申请号：US14947833

    申请日：2015-11-20

    申请人： Marvell World Trade Ltd.

    发明人： Gregory Burd ,  Nedeljko Varnica ,  Heng Tang

    IPC分类号： G11B20/18 ,  G06F11/10 ,  G11B20/12

    CPC分类号： G11B20/1833 ,  G06F11/08 ,  G06F11/1076 ,  G11B20/1217 ,  G11B2020/1222 ,  G11B2020/1238

    摘要： The present disclosure describes systems and techniques relating to storage devices, such as storage devices that employ Shingled Magnetic Recording (SMR). According to an aspect of the described systems and techniques, a device includes: circuitry configured to write stored data and parity data to discrete portions of a Shingled Magnetic Recording (SMR) track in a SMR storage device; and circuitry configured to recover stored data for one of the discrete portions of the SMR track using the parity data and the stored data read from remaining ones of the discrete portions of the SMR track.

    摘要翻译： 本公开描述了与存储设备相关的系统和技术，例如采用带有混合磁记录（SMR）的存储设备。 根据所描述的系统和技术的一个方面，一种设备包括：被配置为将存储的数据和奇偶校验数据写入到SMR存储设备中的混合磁记录（SMR）磁道的离散部分的电路; 以及电路，被配置为使用所述奇偶校验数据和从所述SMR轨道的离散部分中的剩余部分读取的所述存储的数据来恢复所述SMR轨道中的一个离散部分的存储数据。

    TRACK-BAND SQUEEZED-SECTOR ERROR CORRECTION IN MAGNETIC DATA STORAGE DEVICES
    8.
    发明申请
    TRACK-BAND SQUEEZED-SECTOR ERROR CORRECTION IN MAGNETIC DATA STORAGE DEVICES 有权
    磁带数据存储设备中的带宽测量区错误校正

    公开(公告)号：US20150128008A1

    公开(公告)日：2015-05-07

    申请号：US14072923

    申请日：2013-11-06

    申请人： HGST Netherland B.V.

    发明人： Sridhar Chatradhi ,  Martin Aureliano Hassner ,  Kirk Hwang ,  Satoshi Yamamoto

    IPC分类号： G06F11/10 ,  G11B20/12

    CPC分类号： G06F11/1076 ,  G11B20/1833 ,  G11B2020/1222 ,  H03M13/2906

    摘要： Data storage devices using a two-level ECC scheme are described. Embodiments of the invention allow the recovery of sectors in a squeezed group of tracks in a that includes both a single track level ECC scheme and a track band ECC scheme that functions across the set of tracks in the band. The track band ECC scheme uses additional parity information calculated using input data from multiple tracks to allow correction across tracks.

    摘要翻译： 描述使用两级ECC方案的数据存储设备。 本发明的实施例允许恢复被挤压的磁道组中的扇区，其包括在频带中跨越该组轨道工作的单个磁道级ECC方案和轨道带ECC方案两者。 轨道频带ECC方案使用使用来自多个轨道的输入数据计算的附加奇偶校验信息，以允许跨轨迹的校正。