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    Systems and methods for reading data from a storage medium
    1.
    发明授权
    Systems and methods for reading data from a storage medium 有权
    用于从存储介质读取数据的系统和方法

    公开(公告)号：US09257135B2

    公开(公告)日：2016-02-09

    申请号：US14797698

    申请日：2015-07-13

    申请人： Marvell International Ltd.

    发明人： Chun Lian Ong ,  Zhimin Yuan ,  Siang Huei Leong ,  Bo Liu

    IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B5/02 ,  G11B20/12

    CPC分类号： G11B5/09 ,  G11B5/012 ,  G11B5/02 ,  G11B5/59694 ,  G11B20/10009 ,  G11B20/1217 ,  G11B2020/1238

    摘要： A system for reading data from a storage medium. The system includes a reader and a data determination circuit. The reader is configured to receive a first signal from a first position relative to the storage medium and read a second signal from a second position relative to the storage medium. Each of the first signal and the second signal includes a combination of first data stored in a first track and second data stored in a second track. The data determination circuit is configured to determine third data stored at a predetermined position using the combination of the first data stored in the first track and the second data stored in the second track as received in the first signal and the combination of the first data stored in the first track and the second data stored in the second track as received in the second signal.

    摘要翻译： 用于从存储介质读取数据的系统。 该系统包括读取器和数据确定电路。 读取器被配置为从相对于存储介质的第一位置接收第一信号，并且从相对于存储介质的第二位置读取第二信号。 第一信号和第二信号中的每一个包括存储在第一轨道中的第一数据和存储在第二轨道中的第二数据的组合。 数据确定电路被配置为使用存储在第一磁道中的第一数据和存储在第二磁道中的第二数据的组合来确定在预定位置处存储的第三数据，并且存储第一数据的组合 在第一磁道中存储的第二数据和第二磁道中存储的第二数据。

    METHOD AND APPARATUS FOR DETERMINING RELATIVE HEAD-TO-DISK SPEED
    2.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING RELATIVE HEAD-TO-DISK SPEED 审中-公开
    用于确定相对头盘速度的方法和装置

    公开(公告)号：US20150302871A1

    公开(公告)日：2015-10-22

    申请号：US14753370

    申请日：2015-06-29

    申请人： Marvell International LTD.

    发明人： Budi Santoso ,  Zhimin Yuan ,  Siang Huei Leong ,  Chun Lian Ong ,  Pantelis Alexopoulos

    IPC分类号： G11B5/09 ,  G11B27/36

    CPC分类号： G11B5/09 ,  G11B5/6029 ,  G11B19/048 ,  G11B27/36

    摘要： A system including a write head, a read head, a mixer, and a filter. The write head is configured to write a pattern on a track of a medium of a hard disk drive, wherein the pattern has a first frequency. The read head is configured to read the pattern written on the track of the medium of the hard disk drive. The mixer is configured to mix a first signal generated by reading the pattern with a second signal to obtain a mixed signal. The second signal has a second frequency, and wherein the second frequency is different than the first frequency. The filter is configured to filter the mixed signal to determine a relative head-to-disk speed. The filter has a parameter selected based on a difference between the first frequency and the second frequency.

    摘要翻译： 一种包括写入头，读取头，混合器和滤波器的系统。 写入头被配置为在硬盘驱动器的介质的轨道上写入图案，其中图案具有第一频率。 读头被配置为读取写在硬盘驱动器的介质的轨道上的模式。 混频器被配置为将通过读取模式生成的第一信号与第二信号混合以获得混合信号。 第二信号具有第二频率，并且其中第二频率不同于第一频率。 滤波器被配置为过滤混合信号以确定相对的磁盘到磁盘的速度。 滤波器具有基于第一频率和第二频率之间的差异选择的参数。

    Method and apparatus for determining relative head-to-disk speed
    4.
    发明授权
    Method and apparatus for determining relative head-to-disk speed 有权
    用于确定相对头对盘速度的方法和装置

    公开(公告)号：US09343083B2

    公开(公告)日：2016-05-17

    申请号：US14753370

    申请日：2015-06-29

    申请人： Marvell International LTD.

    发明人： Budi Santoso ,  Zhimin Yuan ,  Siang Huei Leong ,  Chun Lian Ong ,  Pantelis Alexopoulos

    IPC分类号： G11B21/02 ,  G11B5/09 ,  G11B27/36 ,  G11B19/04 ,  G11B5/60

    CPC分类号： G11B5/09 ,  G11B5/6029 ,  G11B19/048 ,  G11B27/36

    摘要： A system including a write head, a read head, a mixer, and a filter. The write head is configured to write a pattern on a track of a medium of a hard disk drive, wherein the pattern has a first frequency. The read head is configured to read the pattern written on the track of the medium of the hard disk drive. The mixer is configured to mix a first signal generated by reading the pattern with a second signal to obtain a mixed signal. The second signal has a second frequency, and wherein the second frequency is different than the first frequency. The filter is configured to filter the mixed signal to determine a relative head-to-disk speed. The filter has a parameter selected based on a difference between the first frequency and the second frequency.

    摘要翻译： 一种包括写入头，读取头，混合器和滤波器的系统。 写入头被配置为在硬盘驱动器的介质的轨道上写入图案，其中图案具有第一频率。 读头被配置为读取写在硬盘驱动器的介质的轨道上的模式。 混频器被配置为将通过读取模式生成的第一信号与第二信号混合以获得混合信号。 第二信号具有第二频率，并且其中第二频率不同于第一频率。 滤波器被配置为过滤混合信号以确定相对的磁盘到磁盘的速度。 滤波器具有基于第一频率和第二频率之间的差异选择的参数。

    Recording medium, a data storage apparatus and a method of preparing a recording medium
    6.
    发明授权
    Recording medium, a data storage apparatus and a method of preparing a recording medium 有权
    记录介质，数据存储装置和制备记录介质的方法

    公开(公告)号：US09318139B2

    公开(公告)日：2016-04-19

    申请号：US14416554

    申请日：2013-07-25

    申请人： Marvell International Ltd.

    发明人： Chun Lian Ong ,  Zhimin Yuan ,  Shiming Ang ,  Budi Santoso ,  Jingliang Zhang ,  Siang Huei Leong

    IPC分类号： G11B5/596 ,  G11B5/82 ,  G11B5/00

    CPC分类号： G11B5/59633 ,  G11B5/596 ,  G11B5/59638 ,  G11B5/59688 ,  G11B5/82 ,  G11B2005/0002

    摘要： In the present disclosure, a recording medium and a method of preparing a recording medium is provided. In a recording medium, a first annular servo track can be provided on a first layer of the recording medium, and second annular servo track can be provided on the first layer of the recording medium. The second annular servo track can be adjacent to the first annular servo track. In the recording medium, the first annular servo track and the second annular servo track are magnetically polarized and are magnetically opposing in polarity. A corresponding method of preparing a recording medium is provided.

    摘要翻译： 在本公开中，提供了记录介质和制备记录介质的方法。 在记录介质中，可以在记录介质的第一层上提供第一环形伺服磁道，并且可以在记录介质的第一层上提供第二环形伺服磁道。 第二环形伺服轨道可以与第一环形伺服轨道相邻。 在记录介质中，第一环形伺服轨道和第二环形伺服轨道是磁极化的并且在极性上是磁性相对的。 提供了制备记录介质的相应方法。

    RECORDING MEDIUM, A DATA STORAGE APPARATUS AND A METHOD OF PREPARING A RECORDING MEDIUM
    7.
    发明申请
    RECORDING MEDIUM, A DATA STORAGE APPARATUS AND A METHOD OF PREPARING A RECORDING MEDIUM 有权
    记录介质，数据存储设备和记录介质的准备方法

    公开(公告)号：US20150179198A1

    公开(公告)日：2015-06-25

    申请号：US14416554

    申请日：2013-07-25

    申请人： Marvell International Ltd.

    发明人： Chun Lian Ong ,  Zhimin Yuan ,  Shiming Ang ,  Budi Santoso ,  Jingliang Zhang ,  Siang Huei Leong

    IPC分类号： G11B5/596 ,  G11B20/18

    CPC分类号： G11B5/59633 ,  G11B5/596 ,  G11B5/59638 ,  G11B5/59688 ,  G11B5/82 ,  G11B2005/0002

    摘要： In the present disclosure, a recording medium and a method of preparing a recording medium is provided. In a recording medium, a first annular servo track can be provided on a first layer of the recording medium, and second annular servo track can be provided on the first layer of the recording medium. The second annular servo track can be adjacent to the first annular servo track. In the recording medium, the first annular servo track and the second annular servo track are magnetically polarized and are magnetically opposing in polarity. A corresponding method of preparing a recording medium is provided.

    摘要翻译： 在本公开中，提供了记录介质和制备记录介质的方法。 在记录介质中，可以在记录介质的第一层上提供第一环形伺服磁道，并且可以在记录介质的第一层上提供第二环形伺服磁道。 第二环形伺服轨道可以与第一环形伺服轨道相邻。 在记录介质中，第一环形伺服轨道和第二环形伺服轨道是磁极化的并且在极性上是磁性相对的。 提供了制备记录介质的相应方法。