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1. 发明授权

US08199800B2 Off-track aware equalizer design for bit-patterned media 有权
标题翻译：位图识别均衡器设计用于位图形媒体
公开(公告)号：US08199800B2
公开(公告)日：2012-06-12
申请号：US12185707
申请日：2008-08-04
申请人： Sundararajan Sankaranarayanan , Mehmet Fatih Erden , Raman Chatapuram Venkataramani
发明人： Sundararajan Sankaranarayanan , Mehmet Fatih Erden , Raman Chatapuram Venkataramani
IPC分类号： H03H7/30
CPC分类号： G11B20/10009 , G11B20/10046 , G11B2220/2516 , G11B2220/252
摘要： An equalizer employed in conjunction with bit-patterned media (BPM) is designed to take advantage of a common topology associated with BPM in which each data track is comprised of a plurality of sub-tracks. The equalizer-target filter pair is designed as multiple-input/multiple-output (MIMO) system, in which the readback signal is divided into readback signals associated with each sub-track. The MIMO equalizer takes into account differences in the channel response associated with each sub-track. A detector is configured to receive a plurality of equalized inputs provided by the MIMO equalizer, wherein the detector generates in response estimates of the user data stored on each of the plurality of sub-tracks.
摘要翻译：与位图形介质（BPM）一起使用的均衡器被设计为利用与BPM相关联的公共拓扑，其中每个数据轨道由多个子轨道组成。均衡器 - 目标滤波器对被设计为多输入/多输出（MIMO）系统，其中回读信号被分成与每个子轨道相关联的回读信号。 MIMO均衡器考虑与每个子轨道相关联的信道响应的差异。检测器被配置为接收由MIMO均衡器提供的多个均衡输入，其中所述检测器响应于存储在所述多个子轨道中的每一个子轨道上的用户数据的估计来生成。

2. 发明授权

US07787205B2 Detecting and correcting insertion and deletion of bits for bit patterned media storage systems 有权
标题翻译：检测和校正位图案化媒体存储系统的位的插入和删除
公开(公告)号：US07787205B2
公开(公告)日：2010-08-31
申请号：US11866241
申请日：2007-10-02
申请人： Alexander Vasilievich Kuznetsov , Mehmet Fatih Erden
发明人： Alexander Vasilievich Kuznetsov , Mehmet Fatih Erden
IPC分类号： G11B5/09
CPC分类号： G11B20/10481 , G11B20/10194 , G11B20/1833 , G11B2220/2516 , H03M13/095 , H03M13/49
摘要： 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.
摘要翻译：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。

3. 发明申请

US20100118428A1 INTERSPERSED PHASE-LOCKED LOOP FIELDS FOR DATA STORAGE MEDIA SYNCHRONIZATION 有权
标题翻译：用于数据存储媒体同步的互相锁相环路
公开(公告)号：US20100118428A1
公开(公告)日：2010-05-13
申请号：US12267305
申请日：2008-11-07
申请人： BRUCE DOUGLAS BUCH , MEHMET FATIH ERDEN , BARMESHWAR VIKRAMADITYA
发明人： BRUCE DOUGLAS BUCH , MEHMET FATIH ERDEN , BARMESHWAR VIKRAMADITYA
IPC分类号： G11B5/09
CPC分类号： G11B5/59616 , B82Y10/00 , G11B5/09 , G11B5/743
摘要： Techniques are described for providing media-referenced timing for operations on a data storage medium. In particular, Phase-Locked Loop (PLL) synchronization fields may be interspersed within data fields of the medium and may be read to obtain timing measurements. The PLL fields are illustratively pre-recorded at predetermined intervals on the medium and have a fixed number of dots of the bit patterned medium between the PLL fields. Phase and frequency of a write clock may be controlled based on the read PLL fields to translate the timing measurements from the PLL fields into phase and frequency corrections to synchronize the write clock to the data storage medium,
摘要翻译：描述技术来提供用于数据存储介质上的操作的媒体参考定时。特别地，锁相环（PLL）同步字段可以散布在介质的数据字段内，并且可以被读取以获得定时测量。说明性地在介质上以预定的间隔预先记录PLL场，并且在PLL场之间具有固定数量的位图案化介质的点。可以基于读取的PLL字段来控制写时钟的相位和频率，以将来自PLL字段的定时测量值转换为相位和频率校正，以将写入时钟同步到数据存储介质，

4. 发明授权

US07515372B2 Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording 有权
标题翻译：补偿热辅助磁记录中静态磁头 - 介质间距变化和非线性过渡位移的影响
公开(公告)号：US07515372B2
公开(公告)日：2009-04-07
申请号：US11397146
申请日：2006-04-03
申请人： Mehmet Fatih Erden , Priyadarshee Deeptarag Mathur , William Albert Challener , Edward Charles Gage , Wei Peng , Terry Wayne McDaniel
发明人： Mehmet Fatih Erden , Priyadarshee Deeptarag Mathur , William Albert Challener , Edward Charles Gage , Wei Peng , Terry Wayne McDaniel
IPC分类号： G11B21/02 , G11B27/36 , G11B5/021
CPC分类号： G11B5/012 , G11B5/02 , G11B5/1278 , G11B20/10009 , G11B20/10027 , G11B20/10194 , G11B2005/0002 , G11B2005/0021 , G11B2220/2516
摘要： An apparatus comprises a storage medium, a recording head, a source of electromagnetic radiation, and a control circuit for modulating the source of electromagnetic radiation in response to a static deviation of a spacing between the recording head and the storage medium. A method of compensating a static deviation of a spacing between a recording head and a storage medium performed by the apparatus, and a method of precompensating for nonlinear transition shifts in a heat assisted magnetic recording system, are also provided.
摘要翻译：一种装置包括存储介质，记录头，电磁辐射源，以及用于响应于记录头和存储介质之间的间隔的静态偏差来调制电磁辐射源的控制电路。还提供了一种补偿由该装置执行的记录头和存储介质之间的间隔的静态偏差的方法，以及在热辅助磁记录系统中预补偿非线性过渡位移的方法。

5. 发明申请

US20080151405A1 SYSTEM AND METHOD FOR DRIVE-SIDE GUARANTEE OF QUALITY OF SERVICE AND FOR EXTENDING THE LIFETIME OF STORAGE DEVICES 有权
标题翻译：驱动器质量保证和延长存储设备寿命的系统和方法
公开(公告)号：US20080151405A1
公开(公告)日：2008-06-26
申请号：US12021645
申请日：2008-01-29
申请人： Erozan Mehmet Kurtas , Mehmet Fatih Erden , Xueshi Yang
发明人： Erozan Mehmet Kurtas , Mehmet Fatih Erden , Xueshi Yang
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G11B20/10101 , G11B20/182 , G11B2020/1863
摘要： A storage device has a storage medium, a plurality of read-write mechanisms, a quality monitoring and book-keeping unit and a scheduling unit. The plurality of read-write mechanisms is coupled to the storage medium. The quality monitoring and book-keeping unit is coupled to the plurality of read-write mechanisms and is adapted to monitor at least one performance parameter associated with each read-write mechanism during operation. The scheduling unit is coupled to the quality monitoring and book-keeping unit. The scheduling unit is adapted to rank each of the plurality of read-write mechanisms according to the at least one performance parameter and to responsively schedule use of a read-write mechanism according to its rank.
摘要翻译：存储装置具有存储介质，多个读写机构，质量监视和记录单元以及调度单元。多个读写机构耦合到存储介质。质量监视和记录单元耦合到多个读写机构，并且适于在操作期间监视与每个读写机构相关联的至少一个性能参数。调度单元耦合到质量监视和记录单元。调度单元适于根据至少一个性能参数对多个读写机构中的每一个进行排序，并根据其等级响应地调度对读写机制的使用。

6. 发明授权

US08873178B2 Storing random and sequential data on different track widths of a recording medium 有权
标题翻译：在记录介质的不同磁道宽度上存储随机和顺序数据
公开(公告)号：US08873178B2
公开(公告)日：2014-10-28
申请号：US13569596
申请日：2012-08-08
申请人： Mehmet Fatih Erden , Mourad Benakli
发明人： Mehmet Fatih Erden , Mourad Benakli
IPC分类号： G11B20/10
CPC分类号： G11B20/1252 , G11B20/1217 , G11B20/1254 , G11B2020/1292 , G11B2220/2508 , G11B2220/2516
摘要： Host data to be written to a recording medium is categorized as one of sequential data or random data. The sequential data is written to a first track width on the recording medium. The random data is written to a second track width on the recording medium, the second track width being larger than the first track width.
摘要翻译：要写入记录介质的主机数据被分类为顺序数据或随机数据之一。将顺序数据写入记录介质上的第一轨道宽度。随机数据被写入记录介质上的第二磁道宽度，第二磁道宽度大于第一磁道宽度。

7. 发明授权

US08786970B2 Determining inter-track coherence using output signals from first and second tracks 有权
标题翻译：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
申请人： Mehmet Fatih Erden
发明人： Mehmet Fatih Erden
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B5/3948 , G11B5/3954 , G11B5/4886 , G11B5/746 , G11B20/10222 , G11B20/10268 , G11B2220/2516
摘要： 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.
摘要翻译：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。

8. 发明授权

US08711517B2 Two dimensional magnetic sensor immune to skew angle misalignment 有权
公开(公告)号：US08711517B2
公开(公告)日：2014-04-29
申请号：US13458700
申请日：2012-04-27
申请人： Mehmet Fatih Erden , Jason Gadbois
发明人： Mehmet Fatih Erden , Jason Gadbois
IPC分类号： G11B5/39 , G11B5/60
CPC分类号： G11B5/4813 , G11B5/29 , G11B5/3974 , G11B5/3977 , G11B5/4826 , G11B5/4886 , G11B5/4976 , G11B5/5552 , G11B5/5582 , G11B5/596
摘要： Apparatus for two dimensional data reading. In accordance with some embodiments, a magnetic read element has a plurality of read sensors positioned symmetrically about a pivot point with at least two of the read sensors configured to concurrently read two dimensional user data while being immune to skew angle misalignment.

9. 发明申请

US20130250447A1 DETERMINING INTER-TRACK COHERENCE USING OUTPUT SIGNALS FROM FIRST AND SECOND TRACKS 有权
标题翻译：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
申请人： Mehmet Fatih Erden
发明人： Mehmet Fatih Erden
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B5/3948 , G11B5/3954 , G11B5/4886 , G11B5/746 , G11B20/10222 , G11B20/10268 , G11B2220/2516
摘要： 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.
摘要翻译：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。

10. 发明授权

US08023392B2 Compensating the effects of non-synchronous writing of erasable servo marks 有权
标题翻译：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
申请人： Qiang Ling , Mehmet Fatih Erden
发明人： Qiang Ling , Mehmet Fatih Erden
IPC分类号： G11B9/00
CPC分类号： G11B9/1481 , B82Y10/00 , G11B5/58 , G11B9/02
摘要： 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.
摘要翻译：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。

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