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    Multi-level recording on shingled coherent magnetic media
    3.
    发明授权
    Multi-level recording on shingled coherent magnetic media 有权
    多层次录音带有相干磁性介质

    公开(公告)号：US07982994B1

    公开(公告)日：2011-07-19

    申请号：US12778697

    申请日：2010-05-12

    Applicant: Mehmet Fatih Erden ,  Mourad Benakli ,  Walter Richard Eppler

    Inventor： Mehmet Fatih Erden ,  Mourad Benakli ,  Walter Richard Eppler

    IPC: G11B5/02

    CPC classification number: G11B5/02 ,  G11B5/027 ,  G11B5/09

    Abstract: A data storage system includes recording media with a shingled track pattern of multiple data tracks in which mapped data bits are recorded. The mapped data are coherently aligned with one another across the multiple data tracks. A read head has an effective read head width that extends across the multiple data tracks and that is aligned to coherently read the mapped data bits. A read head output includes a non-binary multi-level amplitude summation of the mapped data bits.

    Abstract translation: 数据存储系统包括具有记录了映射的数据位的多个数据磁道的带有杂波的磁道图案的记录介质。 映射的数据在多个数据轨道上彼此相干地对齐。 读头具有跨多个数据磁道延伸的有效读头宽度，并将其对准以相干地读取映射的数据位。 读头输出包括映射数据位的非二进制多电平振幅求和。

    Determining inter-track coherence using output signals from first and second tracks
    4.
    发明授权
    Determining inter-track coherence using output signals from first and second tracks 有权
    使用来自第一和第二轨道的输出信号来确定轨道间相干性

    公开(公告)号：US08786970B2

    公开(公告)日：2014-07-22

    申请号：US13429795

    申请日：2012-03-26

    Applicant: Mehmet Fatih Erden

    Inventor： Mehmet Fatih Erden

    IPC: G11B5/09

    CPC classification number: G11B5/012 ,  G11B5/3948 ,  G11B5/3954 ,  G11B5/4886 ,  G11B5/746 ,  G11B20/10222 ,  G11B20/10268 ,  G11B2220/2516

    Abstract: An assembly and method to determine adjacent track coherence is disclosed. The assembly includes coherence circuitry configured to receive phase and frequency offsets from timing recovery circuitry and determine an inter-track phase and frequency coherence between the encoded data on a first track and the encoded data on a second track adjacent to the first track utilizing the frequency and phase offsets from the timing recovery circuitry for the output signals corresponding to the first and second tracks.

    Abstract translation: 公开了一种用于确定相邻轨迹相干性的装配和方法。 组件包括相干电路，其被配置为从定时恢复电路接收相位和频率偏移，并且确定第一磁道上的编码数据与第一磁道相邻的第二磁道上的编码数据之间的轨道间相位和频率相干性，利用频率 以及来自对应于第一和第二磁道的输出信号的定时恢复电路的相位偏移。

    DETERMINING INTER-TRACK COHERENCE USING OUTPUT SIGNALS FROM FIRST AND SECOND TRACKS
    6.
    发明申请
    DETERMINING INTER-TRACK COHERENCE USING OUTPUT SIGNALS FROM FIRST AND SECOND TRACKS 有权
    使用第一和第二轨迹的输出信号来确定帧间相干

    公开(公告)号：US20130250447A1

    公开(公告)日：2013-09-26

    申请号：US13429795

    申请日：2012-03-26

    Applicant: Mehmet Fatih Erden

    Inventor： Mehmet Fatih Erden

    IPC: G11B5/09

    CPC classification number: G11B5/012 ,  G11B5/3948 ,  G11B5/3954 ,  G11B5/4886 ,  G11B5/746 ,  G11B20/10222 ,  G11B20/10268 ,  G11B2220/2516

    Abstract: An assembly and method to determine adjacent track coherence is disclosed. The assembly includes coherence circuitry configured to receive phase and frequency offsets from timing recovery circuitry and determine an inter-track phase and frequency coherence between the encoded data on a first track and the encoded data on a second track adjacent to the first track utilizing the frequency and phase offsets from the timing recovery circuitry for the output signals corresponding to the first and second tracks.

    Abstract translation: 公开了一种用于确定相邻轨迹相干性的装配和方法。 组件包括相干电路，其被配置为从定时恢复电路接收相位和频率偏移，并且确定第一磁道上的编码数据与第一磁道相邻的第二磁道上的编码数据之间的轨道间相位和频率相干性，利用频率 以及来自对应于第一和第二磁道的输出信号的定时恢复电路的相位偏移。

    Compensating the effects of non-synchronous writing of erasable servo marks
    7.
    发明授权
    Compensating the effects of non-synchronous writing of erasable servo marks 有权
    补偿可擦除伺服标记非同步写入的影响

    公开(公告)号：US08023392B2

    公开(公告)日：2011-09-20

    申请号：US11639728

    申请日：2006-12-15

    Applicant: Qiang Ling ,  Mehmet Fatih Erden

    Inventor： Qiang Ling ,  Mehmet Fatih Erden

    IPC: G11B9/00

    CPC classification number: G11B9/1481 ,  B82Y10/00 ,  G11B5/58 ,  G11B9/02

    Abstract: A method is provided, which includes reading data from a data storage medium. Reading data from the medium causes the data to be erased. The method further includes determining a desired position to rewrite the data by computing a position error signal based on the data signal and compensating the position error signal for non-zero bias. The data is then rewritten non-synchronously. An apparatus is also provided, including a data storage medium with a data communication transducer configured to receive data from the medium. Data is erased after it is read. The data communication transducer is configured to rewrite the read data back onto the data storage medium in a non-synchronously. A non-zero bias compensator is provided to compensate data received by the data communication transducer to determine a desired position to rewrite the previously read data back onto the medium.

    Abstract translation: 提供了一种方法，其包括从数据存储介质读取数据。 从介质读取数据会导致数据被擦除。 该方法还包括通过基于数据信号计算位置误差信号并补偿非零偏置的位置误差信号来确定重写数据的期望位置。 然后数据被非同步地重写。 还提供了一种装置，包括具有数据通信变换器的数据存储介质，数据通信变换器被配置为从介质接收数据。 数据在读取后被擦除。 数据通信传感器被配置为将读取的数据以非同步方式重写回数据存储介质。 提供非零偏置补偿器以补偿由数据通信变换器接收的数据，以确定将先前读取的数据重写回介质的期望位置。

    LIGHT SOURCE POWER CONTROL FOR HEAT ASSISTED MAGNETIC RECORDING (HAMR)
    8.
    发明申请
    LIGHT SOURCE POWER CONTROL FOR HEAT ASSISTED MAGNETIC RECORDING (HAMR) 有权
    用于热辅助磁记录的光源功率控制（HAMR）

    公开(公告)号：US20110205861A1

    公开(公告)日：2011-08-25

    申请号：US13033331

    申请日：2011-02-23

    Applicant: Mehmet Fatih Erden ,  Edward Charles Gage ,  Darren W. Karns ,  Yimin Niu ,  Kaizhong Gao

    Inventor： Mehmet Fatih Erden ,  Edward Charles Gage ,  Darren W. Karns ,  Yimin Niu ,  Kaizhong Gao

    IPC: G11B13/04

    CPC classification number: G11B13/04 ,  G11B5/012 ,  G11B5/02 ,  G11B5/455 ,  G11B5/5534 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

    Abstract: Apparatus and method for light source power control during the writing of data to a storage medium. In accordance with various embodiments, a data recording head is provided having a magnetic transducer and a light source. The light source is driven at a first power level to irradiate an adjacent storage medium prior to the writing if data to the medium using the magnetic transducer. The first power level is insufficient to alter a magnetization state of the medium. The light source is subsequently transitioned to a higher, second power level to irradiate the storage medium during the writing of data to said medium using the magnetic transducer, the second power level being sufficient to alter said magnetization state of the medium.

    Abstract translation: 在将数据写入存储介质期间的光源功率控制的装置和方法。 根据各种实施例，提供具有磁换能器和光源的数据记录头。 光源以第一功率电平被驱动，以便在写入之前照射相邻的存储介质，如果使用磁换能器的介质的数据。 第一功率电平不足以改变介质的磁化状态。 在使用磁换能器将数据写入所述介质的过程中，光源随后转换到较高的第二功率电平以照射存储介质，第二功率电平足以改变介质的所述磁化状态。

    Detecting and Correcting Insertion and Deletion of Bits for Bit Patterned Media Storage Systems
    9.
    发明申请
    Detecting and Correcting Insertion and Deletion of Bits for Bit Patterned Media Storage Systems 有权
    检测和纠正位图形媒体存储系统的位的插入和删除

    公开(公告)号：US20090086356A1

    公开(公告)日：2009-04-02

    申请号：US11866241

    申请日：2007-10-02

    Applicant: Alexander Vasilievich Kuznetsov ,  Mehmet Fatih Erden

    Inventor： Alexander Vasilievich Kuznetsov ,  Mehmet Fatih Erden

    IPC: G11B5/09

    CPC classification number: G11B20/10481 ,  G11B20/10194 ,  G11B20/1833 ,  G11B2220/2516 ,  H03M13/095 ,  H03M13/49

    Abstract: A method of determining errors in a data storage device is disclosed. The disclosed method includes receiving a first code word from the data storage device. The method further includes determining whether a data error exists in the code word by analyzing a plurality of subsequent code words. Detecting a data error includes calculating first, second, and third checksums for each of a plurality of subsequent code words and determining whether there is an insertion or deletion error based on the calculated checksums. A further method includes receiving location information of errors on a data medium and adjusting a write clock frequency to reduce the probability of creating errors on the data medium during a write process.

    Abstract translation: 公开了一种确定数据存储设备中的错误的方法。 所公开的方法包括从数据存储装置接收第一码字。 该方法还包括通过分析多个后续码字来确定码字中是否存在数据错误。 检测数据错误包括为多个后续码字中的每一个计算第一，第二和第三校验和，并基于所计算的校验和确定是否存在插入或删除错误。 另一种方法包括在数据介质上接收错误的位置信息并调整写入时钟频率以减少在写入过程期间在数据介质上产生错误的概率。

    NULL SERVO PATTERN FOR BIT-PATTERNED MEDIA
    10.
    发明申请
    NULL SERVO PATTERN FOR BIT-PATTERNED MEDIA 有权
    用于比特图形媒体的空服务模式（NULL SERVO PATTERN FOR BIT-PATTERNED MEDIA）

    公开(公告)号：US20090067090A1

    公开(公告)日：2009-03-12

    申请号：US11854013

    申请日：2007-09-12

    Applicant: Qiang Ling ,  Mehmet Fatih Erden ,  Alexei H. Sacks ,  Sundeep Chauhan

    Inventor： Qiang Ling ,  Mehmet Fatih Erden ,  Alexei H. Sacks ,  Sundeep Chauhan

    IPC: G11B5/82

    CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/59688 ,  G11B5/743 ,  G11B5/855

    Abstract: A patterned recording media comprises a segment and a null pattern formed in the segment. The segment comprises first and second rows of discrete magnetic elements separated by a non-magnetic material, and a row of non-magnetic material positioned between the first and second rows. The null pattern comprises consecutive groups of the discrete magnetic elements in the first and second rows of the segment. Each group in the first row has a magnetic polarity that is opposite the magnetic polarity of adjoining groups in the first row. Each group in the second row has a magnetic polarity that is opposite the magnetic polarity of adjoining groups in the second row.

    Abstract translation: 图案化记录介质包括在该段中形成的段和空模式。 该段包括由非磁性材料隔开的第一和第二排离散磁性元件，以及位于第一和第二行之间的一排非磁性材料。 空模式包括段的第一和第二行中的分立磁元件的连续组。 第一行中的每个组具有与第一行中相邻组的磁极性相反的磁极性。 第二排中的每个组具有与第二行中相邻组的磁极性相反的磁极性。

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