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公开(公告)号：US08035910B2
公开(公告)日：2011-10-11
申请号：US11824137
申请日：2007-06-29
申请人： Michael L. Mallary , John W. Vanlaanen , Ching He
发明人： Michael L. Mallary , John W. Vanlaanen , Ching He
IPC分类号： G11B5/02
CPC分类号： G11B5/59616 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B5/3948 , G11B5/59638 , G11B5/746 , G11B5/82 , G11B20/10398 , G11B20/10509 , G11B20/1879 , G11B2220/252
摘要： A read/write head for use with bit-patterned media detects write synchronization errors between a write clock and the bit-patterned media. In particular, the read/write head writes data to the bit-patterned media using a write clock. The data is then read from the bit-patterned media and used to detect write synchronization errors between the write clock and the location of bit-islands on the bit-patterned media. Based on detected write synchronization errors, the phase associated with the write clock is modified to align the write clock with the location of bit-islands on the bit-patterned media.
摘要翻译： 用于位图形介质的读/写头检测写时钟和位图形介质之间的写入同步错误。 特别地，读/写头使用写时钟将数据写入位图案介质。 然后从位图形介质读取数据，并用于检测写时钟与位图形介质上位位置之间的写入同步错误。 基于检测到的写同步错误，修改与写时钟相关的相位，以使写时钟与位图形介质上的位岛的位置对齐。
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公开(公告)号：US20090002868A1
公开(公告)日：2009-01-01
申请号：US11824137
申请日：2007-06-29
申请人： Michael L. Mallary , John W. Vanlaanen , Ching He
发明人： Michael L. Mallary , John W. Vanlaanen , Ching He
CPC分类号： G11B5/59616 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B5/3948 , G11B5/59638 , G11B5/746 , G11B5/82 , G11B20/10398 , G11B20/10509 , G11B20/1879 , G11B2220/252
摘要： A read/write head for use with bit-patterned media detects write synchronization errors between a write clock and the bit-patterned media. In particular, the read/write head writes data to the bit-patterned media using a write clock. The data is then read from the bit-patterned media and used to detect write synchronization errors between the write clock and the location of bit-islands on the bit-patterned media. Based on detected write synchronization errors, the phase associated with the write clock is modified to align the write clock with the location of bit-islands on the bit-patterned media.
摘要翻译： 用于位图形介质的读/写头检测写入时钟和位图形介质之间的写入同步错误。 特别地，读/写头使用写时钟将数据写入位图案介质。 然后从位图形介质读取数据，并用于检测写时钟与位图形介质上位位置之间的写同步错误。 基于检测到的写同步错误，修改与写时钟相关的相位，以使写时钟与位图形介质上的位岛的位置对齐。
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公开(公告)号：US20090003144A1
公开(公告)日：2009-01-01
申请号：US11824221
申请日：2007-06-29
IPC分类号： G11B7/085
CPC分类号： G11B20/1879 , B82Y10/00 , G11B5/743 , G11B20/18 , G11B20/1833 , G11B27/36 , G11B2020/10759 , G11B2020/10796 , G11B2020/1836 , G11B2220/252
摘要： A disc drive system provides increased reliability by detecting and correcting errors associated with bit-patterned media. Write synchronization errors associated with bit-patterned media are addressed by including data storage for temporarily storing data that is being written to the disc drive. The data is read from both the disc drive and the storage medium and compared to detect write synchronization errors. A disc drive system for correcting write synchronization errors includes an encoder, non-volatile storage, and decoder device for implementing a parity-based scheme for increased reliability. Data strings being written to the disc drive are combined in an encoder to generate a parity string. The address of the data being written to the disc drive, along with the updated parity string is stored to the non-volatile storage. The data strings are read from the disc drive by the decoder. If uncorrectable errors are identified, the decoder employs the parity string in conjunction with the other data strings written to the disc drive to reconstruct the data string with uncorrectable errors.
摘要翻译： 磁盘驱动器系统通过检测和校正与位图形介质相关的错误来提供增加的可靠性。 与位图形介质相关联的写入同步错误通过包括临时存储要写入磁盘驱动器的数据的数据存储来解决。 数据从磁盘驱动器和存储介质读取，并进行比较以检测写同步错误。 用于校正写同步错误的盘驱动系统包括用于实现基于奇偶校验的方案以提高可靠性的编码器，非易失性存储器和解码器装置。 写入盘驱动器的数据串被组合在编码器中以产生奇偶校验串。 被写入到磁盘驱动器的数据的地址以及更新的奇偶校验字符串被存储到非易失性存储器中。 数据串由解码器从盘驱动器读取。 如果识别出不可校正的错误，则解码器将奇偶校验码串与写入盘驱动器的其他数据串结合使用不可校正的错误重建数据串。
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公开(公告)号：US08331051B2
公开(公告)日：2012-12-11
申请号：US12904912
申请日：2010-10-14
IPC分类号： G11B5/09
CPC分类号： G11B20/1879 , B82Y10/00 , G11B5/743 , G11B20/18 , G11B20/1833 , G11B27/36 , G11B2020/10759 , G11B2020/10796 , G11B2020/1836 , G11B2220/252
摘要： A disc drive system provides increased reliability by detecting and correcting errors associated with bit-patterned media. Write synchronization errors associated with bit-patterned media are addressed by including data storage for temporarily storing data that is being written to the disc drive. The data is read from both the disc drive and the storage medium and compared to detect write synchronization errors. The disc drive system utilizes the identified write synchronization errors for at least one of timing recovery, equalizer training detection, error correction code application, and error recovery.
摘要翻译： 磁盘驱动器系统通过检测和校正与位图形介质相关的错误来提供增加的可靠性。 与位图形介质相关联的写入同步错误通过包括临时存储要写入磁盘驱动器的数据的数据存储来解决。 数据从磁盘驱动器和存储介质读取，并进行比较以检测写同步错误。 磁盘驱动器系统利用所识别的写同步错误，用于定时恢复，均衡器训练检测，纠错码应用和错误恢复中的至少一个。
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公开(公告)号：US20110249355A1
公开(公告)日：2011-10-13
申请号：US12904912
申请日：2010-10-14
CPC分类号： G11B20/1879 , B82Y10/00 , G11B5/743 , G11B20/18 , G11B20/1833 , G11B27/36 , G11B2020/10759 , G11B2020/10796 , G11B2020/1836 , G11B2220/252
摘要： A disc drive system provides increased reliability by detecting and correcting errors associated with bit-patterned media. Write synchronization errors associated with bit-patterned media are addressed by including data storage for temporarily storing data that is being written to the disc drive. The data is read from both the disc drive and the storage medium and compared to detect write synchronization errors. The disc drive system utilizes the identified write synchronization errors for at least one of timing recovery, equalizer training detection, error correction code application, and error recovery.
摘要翻译： 磁盘驱动器系统通过检测和校正与位图形介质相关的错误来提供增加的可靠性。 与位图形介质相关联的写入同步错误通过包括临时存储要写入磁盘驱动器的数据的数据存储来解决。 数据从磁盘驱动器和存储介质读取，并进行比较以检测写同步错误。 磁盘驱动器系统利用所识别的写同步错误，用于定时恢复，均衡器训练检测，纠错码应用和错误恢复中的至少一个。
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公开(公告)号：US08339735B2
公开(公告)日：2012-12-25
申请号：US11823917
申请日：2007-06-29
申请人： Michael L. Mallary , Ching He , Kaizhong Gao
发明人： Michael L. Mallary , Ching He , Kaizhong Gao
CPC分类号： G11B5/127 , B82Y10/00 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/743 , G11B5/82
摘要： A magnetic writer writes to a magnetic medium including a plurality of tracks that each includes a plurality of isolated magnetic elements for storage of information. The magnetic writer includes a write element having a write element tip having a leading edge, a trailing edge, and first and second side edges extending between the leading edge and the trailing edge. A side shield is proximate the first side edge and no shield is proximate the second side edge.
摘要翻译： 磁写入器写入包括多个轨道的磁介质，每个磁道包括用于存储信息的多个隔离的磁性元件。 磁性写入器包括具有写入元件尖端的写入元件，该写入元件尖端具有前缘，后缘以及在前边缘和后边缘之间延伸的第一和第二侧边缘。 侧护板靠近第一侧边缘，并且没有屏蔽件靠近第二侧边缘。
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公开(公告)号：US20090002896A1
公开(公告)日：2009-01-01
申请号：US11823917
申请日：2007-06-29
申请人： Michael L. Mallary , Ching He , Kaizhong Gao
发明人： Michael L. Mallary , Ching He , Kaizhong Gao
CPC分类号： G11B5/127 , B82Y10/00 , G11B5/11 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/743 , G11B5/82
摘要： A magnetic writer writes to a magnetic medium including a plurality of tracks that each includes a plurality of isolated magnetic elements for storage of information. The magnetic writer includes a write element having a write element tip having a leading edge, a trailing edge, and first and second side edges extending between the leading edge and the trailing edge. A side shield is proximate the first side edge and no shield is proximate the second side edge.
摘要翻译： 磁写入器写入包括多个轨道的磁介质，每个磁道包括用于存储信息的多个隔离的磁性元件。 磁性写入器包括具有写入元件尖端的写入元件，该写入元件尖端具有前缘，后缘以及在前边缘和后边缘之间延伸的第一和第二侧边缘。 侧护板靠近第一侧边缘，并且没有屏蔽件靠近第二侧边缘。
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公开(公告)号：US07835099B2
公开(公告)日：2010-11-16
申请号：US11824221
申请日：2007-06-29
IPC分类号： G11B5/09
CPC分类号： G11B20/1879 , B82Y10/00 , G11B5/743 , G11B20/18 , G11B20/1833 , G11B27/36 , G11B2020/10759 , G11B2020/10796 , G11B2020/1836 , G11B2220/252
摘要： A disc drive system provides increased reliability by detecting and correcting errors associated with bit-patterned media. Write synchronization errors associated with bit-patterned media are addressed by including data storage for temporarily storing data that is being written to the disc drive. The data is read from both the disc drive and the storage medium and compared to detect write synchronization errors. A disc drive system for correcting write synchronization errors includes an encoder, non-volatile storage, and decoder device for implementing a parity-based scheme for increased reliability. Data strings being written to the disc drive are combined in an encoder to generate a parity string. The address of the data being written to the disc drive, along with the updated parity string is stored to the non-volatile storage. The data strings are read from the disc drive by the decoder. If uncorrectable errors are identified, the decoder employs the parity string in conjunction with the other data strings written to the disc drive to reconstruct the data string with uncorrectable errors.
摘要翻译： 磁盘驱动器系统通过检测和校正与位图形介质相关的错误来提供增加的可靠性。 与位图形介质相关联的写入同步错误通过包括临时存储要写入磁盘驱动器的数据的数据存储来解决。 数据从磁盘驱动器和存储介质读取，并进行比较以检测写同步错误。 用于校正写同步错误的盘驱动系统包括用于实现基于奇偶校验的方案以提高可靠性的编码器，非易失性存储器和解码器装置。 被写入盘驱动器的数据串被组合在编码器中以产生奇偶校验串。 被写入到磁盘驱动器的数据的地址以及更新的奇偶校验字符串被存储到非易失性存储器中。 数据串由解码器从盘驱动器读取。 如果识别出不可校正的错误，则解码器将奇偶校验码串与写入盘驱动器的其他数据串结合使用不可校正的错误重建数据串。
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9.发明授权Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers 有权用于控制近场换能器的干涉波导中的光相位差的系统和方法公开(公告)号：US08675455B1
公开(公告)日：2014-03-18
申请号：US13399325
申请日：2012-02-17
CPC分类号： G11B5/6088 , G11B5/105 , G11B5/3133 , G11B5/314 , G11B2005/0021
摘要： Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers by selectively heating the light source are provided. One such system for controlling light phase at the NFT of an interferometric waveguide includes a laser, a heater configured to heat the laser, a splitter configured to receive light from the laser and to split the light into a first waveguide arm and a second waveguide arm, the first waveguide arm and the second waveguide arm converging at a junction about opposite the splitter, and the NFT proximate the junction and configured to receive the light, where the first waveguide arm is longer than the second waveguide arm by a preselected distance, and where the heater is configured to generate and maintain a preselected phase difference in the light arriving at the NFT via the first waveguide arm and the second waveguide arm.
摘要翻译： 提供了通过选择性加热光源来控制近场换能器的干涉波导中的光相位差的系统和方法。 一种用于在干涉波导的NFT处控制光相的这种系统包括激光器，被配置为加热激光器的加热器，被配置为接收来自激光器的光并将光分成第一波导臂和第二波导臂 ，所述第一波导臂和所述第二波导臂在与所述分路器相对的接合处会聚，并且所述NFT邻近所述接合处并且被配置为接收所述光，其中所述第一波导臂比所述第二波导臂长一预定距离，以及 其中所述加热器被配置为在经由所述第一波导臂和所述第二波导臂到达所述NFT的光中产生并保持预选的相位差。
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公开(公告)号：US07880999B2
公开(公告)日：2011-02-01
申请号：US12205061
申请日：2008-09-05
申请人： Mourad Benakli , Michael L. Mallary
发明人： Mourad Benakli , Michael L. Mallary
CPC分类号： G11B5/3967 , G11B5/3116 , G11B5/3143 , G11B2005/0018
摘要： A magnetic storage system includes a magnetic storage medium and a transducer positioned adjacent the magnetic storage medium. The transducer has a reader positioned adjacent writer and a reader bias coil located on the transducer. Transducer circuitry is configured to apply a bias signal to the reader bias coil during a read-write operation. The reader bias coil generates a reader bias field proximate the reader.
摘要翻译： 磁存储系统包括磁存储介质和位于磁存储介质附近的换能器。 换能器具有位于写入器附近的读取器和位于换能器上的读取器偏置线圈。 传感器电路被配置为在读写操作期间将偏置信号施加到读取器偏置线圈。 读取器偏置线圈在读取器附近产生读取器偏置场。
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