公开(公告)号：US20150243321A1

公开(公告)日：2015-08-27

申请号：US14220211

申请日：2014-03-20

Applicant: LSI Corporation

Inventor： Kurt J. Worrell ,  Jason D. Byrne ,  Scott M. Dziak

IPC: G11B20/10 ,  G11B20/12

CPC classification number: G11B20/1024 ,  G11B20/10222 ,  G11B20/1217 ,  G11B2020/1232 ,  G11B2020/1242

Abstract: An exemplary hard disk (HD) track has a full overhead section followed by user sections interleaved with intervening partial overhead sections that are too short for an HD drive (HDD) to attain sufficient timing lock using only one partial overhead section, but long enough for the drive to attain sufficient timing lock using multiple partial overhead sections to read user data from the user section immediately following the partial overhead section where sufficient timing lock is attained. The drive begins, but does not finish, attaining timing lock based on the first partial overhead section, but the drive does finish attaining timing lock based on the last partial overhead section. The drive can also read user data in subsequent user sections by maintaining or re-attaining sufficient timing lock using each successive partial overhead section. Increased user data storage is achieved without significantly impacting average latency of HDD read sessions compared to conventional HD drives.

Abstract translation: 示例性硬盘（HD）轨道具有完整的开销部分，其后是与HD驱动器（HDD）太短的中间部分开销部分交错的用户部分，以仅使用一个部分开销部分来获得足够的定时锁定，但足够长 使用多个部分开销部分来获得充分的定时锁定的驱动器，以便在紧接在获得足够的定时锁定的部分开销部分之后的用户部分中读取用户数据。 驱动器开始但没有完成，基于第一部分开销部分获得定时锁定，但驱动器完成基于最后部分开销部分获得定时锁定。 驱动器还可以通过使用每个连续部分开销部分维持或重新获得足够的定时锁定来读取后续用户部分中的用户数据。 实现与常规HD驱动器相比，增加的用户数据存储不会明显影响HDD读取会话的平均延迟。

公开(公告)号：US09026891B2

公开(公告)日：2015-05-05

申请号：US13831246

申请日：2013-03-14

Applicant: LSI Corporation

Inventor： Scott M. Dziak ,  Jeffrey P. Grundvig ,  Jason D. Byrne

IPC: G11C29/00 ,  G11B27/30 ,  G11B20/12 ,  G06F11/10 ,  G11B20/10

CPC classification number: G11B27/3027 ,  G06F11/1076 ,  G11B20/1217 ,  G11B2020/10916 ,  G11B2020/1232

Abstract: A method and system for performing a shortened acquire cycle for at least one fragment of at least one data sector having coherently written fragments, the coherently written fragments being written during a single rotation of a storage medium. The method includes performing a full acquire cycle for a first fragment of a particular data sector of the at least one data sector. The method further includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. The method also includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. Additionally, the method includes performing the shortened acquire cycle for the at least one subsequent coherently written fragment.

Abstract translation: 一种用于对具有相干写入的片段的至少一个数据扇区的至少一个片段执行缩短的获取周期的方法和系统，所述相干写入的片段在存储介质的单次旋转期间被写入。 该方法包括对至少一个数据扇区的特定数据扇区的第一片段执行完整采集周期。 该方法还包括重新使用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 该方法还包括重新利用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 另外，该方法包括对所述至少一个随后的相干写入片段执行缩短的获取周期。

公开(公告)号：US09147430B2

公开(公告)日：2015-09-29

申请号：US14220211

申请日：2014-03-20

Applicant: LSI Corporation

Inventor： Kurt J. Worrell ,  Jason D. Byrne ,  Scott M. Dziak

IPC: G11B5/09 ,  G11B20/10 ,  G11B20/12

CPC classification number: G11B20/1024 ,  G11B20/10222 ,  G11B20/1217 ,  G11B2020/1232 ,  G11B2020/1242

Abstract: An exemplary hard disk (HD) track has a full overhead section followed by user sections interleaved with intervening partial overhead sections that are too short for an HD drive (HDD) to attain sufficient timing lock using only one partial overhead section, but long enough for the drive to attain sufficient timing lock using multiple partial overhead sections to read user data from the user section immediately following the partial overhead section where sufficient timing lock is attained. The drive begins, but does not finish, attaining timing lock based on the first partial overhead section, but the drive does finish attaining timing lock based on the last partial overhead section. The drive can also read user data in subsequent user sections by maintaining or re-attaining sufficient timing lock using each successive partial overhead section. Increased user data storage is achieved without significantly impacting average latency of HDD read sessions compared to conventional HD drives.

Abstract translation: 示例性硬盘（HD）轨道具有完整的开销部分，其后是与HD驱动器（HDD）太短的中间部分开销部分交错的用户部分，以仅使用一个部分开销部分来获得足够的定时锁定，但足够长 使用多个部分开销部分来获得充分的定时锁定的驱动器，以便在紧接在获得足够的定时锁定的部分开销部分之后的用户部分中读取用户数据。 驱动器开始但没有完成，基于第一部分开销部分获得定时锁定，但驱动器完成基于最后部分开销部分获得定时锁定。 驱动器还可以通过使用每个连续部分开销部分维持或重新获得足够的定时锁定来读取后续用户部分中的用户数据。 实现与常规HD驱动器相比，增加的用户数据存储不会明显影响HDD读取会话的平均延迟。

公开(公告)号：US20140281818A1

公开(公告)日：2014-09-18

申请号：US13831246

申请日：2013-03-14

Applicant: LSI CORPORATION

Inventor： Scott M. Dziak ,  Jeffrey P. Grundvig ,  Jason D. Byrne

IPC: G11B27/30 ,  G11B20/18 ,  G11B20/12 ,  G06F11/10

CPC classification number: G11B27/3027 ,  G06F11/1076 ,  G11B20/1217 ,  G11B2020/10916 ,  G11B2020/1232

Abstract: A method and system for performing a shortened acquire cycle for at least one fragment of at least one data sector having coherently written fragments, the coherently written fragments being written during a single rotation of a storage medium. The method includes performing a full acquire cycle for a first fragment of a particular data sector of the at least one data sector. The method further includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. The method also includes reusing at least a portion of the acquisition information of the first fragment to perform a shortened acquire cycle for at least one subsequent coherently written fragment. Additionally, the method includes performing the shortened acquire cycle for the at least one subsequent coherently written fragment.

Abstract translation: 一种用于对具有相干写入的片段的至少一个数据扇区的至少一个片段执行缩短的获取周期的方法和系统，所述相干写入的片段在存储介质的单次旋转期间被写入。 该方法包括对至少一个数据扇区的特定数据扇区的第一片段执行完整采集周期。 该方法还包括重新使用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 该方法还包括重新利用第一片段的获取信息的至少一部分来对至少一个随后的相干写入片段执行缩短的获取周期。 另外，该方法包括对所述至少一个随后的相干写入片段执行缩短的获取周期。

公开(公告)号：US09025265B1

公开(公告)日：2015-05-05

申请号：US14230532

申请日：2014-03-31

Applicant: LSI Corporation

Inventor： Scott M. Dziak ,  Richard Rauschmayer ,  Jason D. Byrne

IPC: G11B27/36 ,  G11B20/10

CPC classification number: G11B27/36 ,  G11B20/10009 ,  G11B20/10027

Abstract: A method and system for providing format savings in data sectors. The method includes receiving a signal outputted from an analog-to-digital conversion circuit. The method further includes shifting a signal phase of the signal based at least upon a corrected phase at an output of a phase loop and a phase measured when the signal was digitally sampled by the analog-to-digital conversion circuit. The method also includes adjusting a gain of the signal based at least upon a current gain loop correction and a gain correction made when the signal was digitally sampled by the analog-to-digital conversion circuit. Additionally, the method includes adjusting the signal based at least upon an output of a current offset correction and an offset correction made when the signal was digitally sampled by the analog-to-digital conversion circuit. The method also includes outputting an adjusted signal to a sync mark detector.

Abstract translation: 一种用于在数据扇区中提供格式节省的方法和系统。 该方法包括接收从模拟 - 数字转换电路输出的信号。 该方法还包括至少基于在相位环路的输出处的校正相位和当信号由模数转换电路进行数字采样时测量的相位来移位信号的信号相位。 该方法还包括至少基于当前增益环路校正和当信号被模数转换电路进行数字采样时进行的增益校正来调整信号的增益。 此外，该方法包括至少基于当前偏移校正的输出和当信号由模数转换电路进行数字采样时进行的偏移校正来调整信号。 该方法还包括将经调整的信号输出到同步标记检测器。

公开(公告)号：US20150085392A1

公开(公告)日：2015-03-26

申请号：US14044009

申请日：2013-10-02

Applicant: LSI Corporation

Inventor： Scott M. Dziak ,  Jason D. Byrne

IPC: G11B20/10 ,  G11B5/09 ,  G11B27/36

CPC classification number: G11B20/10462 ,  G11B20/10305 ,  G11B27/36

Abstract: The disclosure is directed to a system and method of determining signal quality based upon at least one of: a comparison of energy content of the signal to a threshold energy content, a comparison of energy content of the fundamental harmonic of the signal to a specified percentage of the energy content of the signal, and a comparison of a difference between phase of the signal and a target phase to a threshold phase difference.

Abstract translation: 本公开涉及一种基于以下至少一个来确定信号质量的系统和方法：将信号的能量内容与阈值能量内容进行比较，将信号的基本谐波的能量含量与指定百分比进行比较 的信号的能量含量，以及信号的相位与目标相位之间的差与阈值相位差的比较。

公开(公告)号：US08970975B1

公开(公告)日：2015-03-03

申请号：US14044009

申请日：2013-10-02

Applicant: LSI Corporation

Inventor： Scott M. Dziak ,  Jason D. Byrne

IPC: G11B27/36 ,  G11B20/10 ,  G11B5/09

CPC classification number: G11B20/10462 ,  G11B20/10305 ,  G11B27/36

Abstract: The disclosure is directed to a system and method of determining signal quality based upon at least one of: a comparison of energy content of the signal to a threshold energy content, a comparison of energy content of the fundamental harmonic of the signal to a specified percentage of the energy content of the signal, and a comparison of a difference between phase of the signal and a target phase to a threshold phase difference.

Abstract translation: 本公开涉及一种基于以下至少一个来确定信号质量的系统和方法：将信号的能量内容与阈值能量内容进行比较，将信号的基本谐波的能量含量与指定百分比进行比较 的信号的能量含量，以及信号的相位与目标相位之间的差与阈值相位差的比较。

公开(公告)号：US08837066B1

公开(公告)日：2014-09-16

申请号：US14255086

申请日：2014-04-17

Applicant: LSI Corporation

Inventor： Jason D. Byrne ,  Scott M. Dziak

IPC: G11B5/09

CPC classification number: G11B20/10203 ,  G11B5/09

Abstract: An apparatus comprises an alternating current coupling stage comprising a first filter configured to filter an analog signal to remove relatively low-frequency energy and read channel circuitry coupled to the alternating current coupling stage. The read channel circuitry comprises an analog-to-digital converter configured to convert the filtered analog signal to a digital signal, a detector configured to obtain a recovered signal using the digital signal, and a baseline correction module comprising a second filter and being configured to estimate a parameter of the first filter using a least mean squares algorithm based at least in part on the analog signal and an output of the second filter, adjust a parameter of the second filter based on the estimated parameter and add at least a portion of the removed relatively low-frequency energy to the digital signal by combining the output of the second filter and the digital signal.

Abstract translation: 一种装置包括交流耦合级，其包括被配置为滤波模拟信号以去除相对低频能量并读取耦合到交流耦合级的通道电路的第一滤波器。 读通道电路包括被配置为将经滤波的模拟信号转换为数字信号的模数转换器，被配置为使用数字信号获得恢复信号的检测器，以及包括第二滤波器的基线校正模块， 至少部分地基于所述模拟信号和所述第二滤波器的输出，使用最小均方算法估计所述第一滤波器的参数，基于所述估计参数来调整所述第二滤波器的参数，并且添加所述第二滤波器的至少一部分 通过组合第二滤波器的输出和数字信号，将相对低频的能量去除到数字信号。

公开(公告)号：US08693121B1

公开(公告)日：2014-04-08

申请号：US13788253

申请日：2013-03-07

Applicant: LSI Corporation

Inventor： Bruce W. McNeill ,  Jason D. Byrne

IPC: G11B5/09

CPC classification number: G11B20/10009 ,  G11B5/09

Abstract: A method includes designating a first sampling phase for a signal captured from a magnetic storage medium, where the signal is representative of information stored by the magnetic storage medium. The method further includes capturing a first waveform associated with the signal at the first sampling phase. The method also includes designating a second sampling phase different from the first sampling phase for the signal. The method further includes capturing a second waveform associated with the signal at the second sampling phase. The method also includes interleaving the first waveform and the second waveform to form an oversampled waveform. The first waveform and the second waveform are captured at a rate at least substantially equal to a rate at which the information stored by the magnetic storage medium was written to the magnetic storage medium.

Abstract translation: 一种方法包括为从磁存储介质捕获的信号指定第一采样相位，其中信号代表由磁存储介质存储的信息。 该方法还包括在第一采样阶段捕获与该信号相关联的第一波形。 该方法还包括指定与信号的第一采样相位不同的第二采样相位。 该方法还包括在第二采样阶段捕获与该信号相关联的第二波形。 该方法还包括交织第一波形和第二波形以形成过采样波形。 第一波形和第二波形以至少基本上等于由磁存储介质存储的信息被写入磁存储介质的速率的速率被捕获。