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公开(公告)号：US09711169B2
公开(公告)日：2017-07-18
申请号：US14913129
申请日：2014-08-26
CPC分类号： G11B5/29 , G11B5/012 , G11B5/3945 , G11B5/3958 , G11B5/3977 , G11B5/4886
摘要： According to embodiments of the present invention, a sensor array for reading data from a storage medium including a plurality of tracks is provided. The sensor array includes a first sensor, and a second sensor, wherein the first sensor and the second sensor are configured to obtain signals from adjacent tracks of the plurality of tracks of the storage medium, the signals being associated with data stored at the adjacent tracks. According to further embodiments of the present invention, a storage device and a method of reading data from a storage medium including a plurality of tracks are also provided.
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公开(公告)号：US09257135B2
公开(公告)日：2016-02-09
申请号：US14797698
申请日：2015-07-13
发明人： Chun Lian Ong , Zhimin Yuan , Siang Huei Leong , Bo Liu
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。
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3.发明申请公开(公告)号：US20150287429A1
公开(公告)日：2015-10-08
申请号：US14747366
申请日：2015-06-23
发明人： Jingliang ZHANG , Anmin Kong , Songhua Zhang , Zhimin Yuan , Linlin THI
IPC分类号： G11B5/596
CPC分类号： G11B5/59627 , G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B27/105 , G11B27/3027
摘要： A system for tracking a position error of a read/write head. The read/write head is configured to read data recorded to a data layer of a recording medium and read servo information recorded to a dedicated servo layer of the recording medium. To read the servo information, the read/write head is configured to read, from a first track, a first servo signal including first servo bursts of a predetermined frequency, and read, from a second track adjacent to the first track, a second servo signal including second servo bursts of the predetermined frequency. The first servo bursts are orthogonal to the second servo bursts. A position error signal determination circuit is configured to determine the position error using at least one of the first servo signal and the second servo signal.
摘要翻译： 用于跟踪读/写头位置误差的系统。 读/写头被配置为读取记录到记录介质的数据层的数据，并读取记录在记录介质的专用伺服层上的伺服信息。 为了读取伺服信息，读/写头被配置为从第一轨道读取包括预定频率的第一伺服脉冲串的第一伺服信号，并从与第一轨道相邻的第二轨道读取第二伺服信号 信号包括预定频率的第二伺服脉冲串。 第一伺服脉冲串与第二伺服脉冲串正交。 位置误差信号确定电路被配置为使用第一伺服信号和第二伺服信号中的至少一个来确定位置误差。
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4.发明授权Medium, method of fabricating a medium, recording system and method of controlling a recording system 有权介质，制造介质的方法，记录系统和控制记录系统的方法公开(公告)号：US09007713B2
公开(公告)日：2015-04-14
申请号：US14494499
申请日：2014-09-23
发明人： Zhimin Yuan , Bo Liu , Jianzhong Shi , Weidong Zhou
CPC分类号： G11B5/66 , G11B5/02 , G11B5/09 , G11B5/29 , G11B5/4813 , G11B5/59638 , G11B5/62 , G11B5/7325 , G11B5/82 , G11B5/84 , G11B5/8408 , G11B2005/0021
摘要： A medium may be provided. The medium includes a servo layer, a data recording layer, and a heat sink layer disposed between the servo layer and the recording layer.
摘要翻译： 可以提供介质。 介质包括伺服层，数据记录层和设置在伺服层和记录层之间的散热层。
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5.发明授权公开(公告)号：US09257140B2
公开(公告)日：2016-02-09
申请号：US14747366
申请日：2015-06-23
发明人： Jingliang Zhang , Anmin Kong , Songhua Zhang , Zhimin Yuan , Linlin Thi
CPC分类号： G11B5/59627 , G11B5/59655 , G11B5/59688 , G11B20/1217 , G11B27/105 , G11B27/3027
摘要： A system for tracking a position error of a read/write head. The read/write head is configured to read data recorded to a data layer of a recording medium and read servo information recorded to a dedicated servo layer of the recording medium. To read the servo information, the read/write head is configured to read, from a first track, a first servo signal including first servo bursts of a predetermined frequency, and read, from a second track adjacent to the first track, a second servo signal including second servo bursts of the predetermined frequency. The first servo bursts are orthogonal to the second servo bursts. A position error signal determination circuit is configured to determine the position error using at least one of the first servo signal and the second servo signal.
摘要翻译： 用于跟踪读/写头位置误差的系统。 读/写头被配置为读取记录到记录介质的数据层的数据，并读取记录在记录介质的专用伺服层上的伺服信息。 为了读取伺服信息，读/写头被配置为从第一轨道读取包括预定频率的第一伺服脉冲串的第一伺服信号，并从与第一轨道相邻的第二轨道读取第二伺服信号 信号包括预定频率的第二伺服脉冲串。 第一伺服脉冲串与第二伺服脉冲串正交。 位置误差信号确定电路被配置为使用第一伺服信号和第二伺服信号中的至少一个来确定位置误差。
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公开(公告)号：US20150325257A1
公开(公告)日：2015-11-12
申请号：US14797698
申请日：2015-07-13
发明人： Chun Lian Ong , Zhimin Yuan , Siang Huei Leong , Bo Liu
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。
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公开(公告)号：US09177598B2
公开(公告)日：2015-11-03
申请号：US13684033
申请日：2012-11-21
发明人： Siang Huei Leong , Zhimin Yuan , Bo Liu , Joo Boon Marcus Lim
CPC分类号： G11B21/02 , G11B5/02 , G11B5/127 , G11B5/59638 , G11B5/64 , G11B5/66 , G11B5/7325 , G11B5/82
摘要： A device may be provided. The device includes a media including a servo layer and a data recording layer, and a recording head including a dimension sized to produce a magnetic writing field to write servo information on the servo layer.
摘要翻译： 可以提供设备。 该装置包括包括伺服层和数据记录层的介质，以及记录头，该记录头的尺寸被设计成产生写磁场以在伺服层上写入伺服信息。
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8.发明授权Methods and apparatus for hard disk drive system operation monitoring and self-adjustment 有权硬盘驱动系统运行监控和自我调整的方法和装置公开(公告)号：US09070416B2
公开(公告)日：2015-06-30
申请号：US13891735
申请日：2013-05-10
CPC分类号： G11B5/09 , G11B5/6029 , G11B19/048 , G11B27/36
摘要： Methods and architecture for monitoring hard disk drive operation is provided. The hard disk drive system provided includes a spindle, a head and a disk with a disk medium including a buried servo layer having a first frequency of data on a first track and a second frequency of data on a second track, the second track adjacent to the first track. The method includes the steps of writing a wide track pattern having a predetermined frequency on a track of a hard disk drive medium, generating a readback signal by reading the pattern from the track, processing the readback signal by mixing the readback signal with a reference signal to obtain a mixed signal having a summed signal and a difference signal, and filtering the mixed signal by a filter centered around the difference signal to generate a measurement signal corresponding to a relative speed change of the spindle and a head-to-disk motion. In addition, filtering a readback signal generated by the head when positioned at the middle of the first track and the second track with a first filter centered at the first frequency and a second filter centered at the second frequency is used to generate signals for determining spindle speed variation, spindle speed jitter, and relative head-disk vibration in the downtrack direction, for synchronizing writing in Two Dimensional Magnetic Recording (TDMR) and for measuring continuous flying height information based on Wallace equations.
摘要翻译： 提供了监控硬盘驱动器操作的方法和架构。 提供的硬盘驱动器系统包括主轴，磁头和磁盘，磁盘介质包括在第一磁道上具有第一数据频率的掩埋伺服层和在第二磁道上的第二数据频率的第二磁道， 第一轨。 该方法包括以下步骤：在硬盘驱动器介质的轨道上写入具有预定频率的宽轨道图案，通过从轨道读取图案产生回读信号，通过将回读信号与参考信号混合来处理回读信号 以获得具有加和信号和差分信号的混合信号，并且通过以差分信号为中心的滤波器对混合信号进行滤波，以产生对应于主轴的相对速度变化和头对盘运动的测量信号。 此外，当位于第一轨道的中间处的头部产生的回读信号和以第一频率为中心的第一滤波器的第二轨道和以第二频率为中心的第二滤波器进行滤波，以产生用于确定主轴的信号 速度变化，主轴转速抖动以及沿横向方向的相对头盘振动，用于在二维磁记录（TDMR）中同步写入以及基于Wallace方程测量连续飞行高度信息。
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公开(公告)号：US09704522B2
公开(公告)日：2017-07-11
申请号：US15022483
申请日：2014-09-17
发明人： Zhimin Yuan , Jingliang Zhang , Chun Lian Ong , Shiming Ang
IPC分类号： G11B5/596
CPC分类号： G11B5/59666 , G11B5/59655
摘要： Magnetic disk, method of track following on a magnetic disk, and method of writing a servo pattern in a dedicated servo layer of a magnetic disk. The magnetic disk comprises a servo pattern in a dedicated servo layer of the magnetic disk, the servo pattern having a first burst A and a second burst B arranged to be within one period of a servo sample, each of burst A and burst B comprising DC+ and DC− magnetic bursts; wherein a center of the DC+/DC− bursts of burst B is shifted relative to the DC+/DC− bursts of burst A in a substantially radial direction of the magnetic disk.
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公开(公告)号：US09431053B2
公开(公告)日：2016-08-30
申请号：US14694401
申请日：2015-04-23
发明人： Kui Cai , Anmin Kong , Zhimin Yuan
CPC分类号： G11B20/1426 , G11B5/09 , G11B20/10009 , G11B20/1217 , G11B20/1403
摘要： A method of encoding an input data into a codeword that satisfy a k constraint includes partitioning the input data into a plurality of data blocks comprising a first data block and a plurality of remaining data blocks; performing a first analysis of the plurality of data blocks for modifying each of the plurality of remaining data blocks that satisfy a first predetermined criterion; performing a second analysis of the plurality of data blocks after the first analysis for modifying each of the plurality of data blocks that satisfy a second predetermined criterion; and converting each bit of the plurality of data blocks after the second analysis to produce the codeword in Non-Return-to-Zero (NRZ) format with the k constraint. There is also provided a method of decoding the codeword with satisfies the k constraint into an output data, and the corresponding encoder and decoder.
摘要翻译： 将输入数据编码成满足k约束的码字的方法包括将输入数据划分成包括第一数据块和多个剩余数据块的多个数据块; 执行所述多个数据块的第一分析，以修改满足第一预定标准的所述多个剩余数据块中的每一个; 在第一次分析之后对多个数据块进行第二次分析，以修改满足第二预定标准的多个数据块中的每一个; 并且在第二次分析之后转换多个数据块的每一位以产生具有k个约束的非返回到零（NRZ）格式的码字。 还提供了一种将满足k约束的码字解码为输出数据的方法，以及对应的编码器和解码器。
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