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1. 发明授权

US08862971B1 Inter-track interference (ITI) correlation and cancellation for disk drive applications 有权
标题翻译：磁盘驱动器应用的轨道间干扰（ITI）相关和取消
公开(公告)号：US08862971B1
公开(公告)日：2014-10-14
申请号：US13166717
申请日：2011-06-22
申请人： Kai Keung Chan , Xin-Ning Song , Kwok W. Yeung , Xianfeng Rui
发明人： Kai Keung Chan , Xin-Ning Song , Kwok W. Yeung , Xianfeng Rui
IPC分类号： H03M13/03 , H04L25/03 , H04B1/7085
CPC分类号： H04L25/0328 , H04B1/7085
摘要： Inter-track-interference correlation and cancellation for disk drive application includes receiving an input sequence of samples; and simultaneously processing the input sequence in at least a detector over one or more iterations while processing the input sequence to produce inter-track-interference information during at least a portion of one of the one or more iterations.
摘要翻译：磁盘驱动器应用的轨道间干扰相关和取消包括接收样本的输入序列; 并且在一个或多个迭代中同时处理至少一个检测器中的输入序列，同时在一个或多个迭代中的一个迭代的至少一部分中处理输入序列以产生轨道间干扰信息。

2. 发明授权

US08659846B2 Inter-track interference cancelation in the presence of frequency offset 有权
标题翻译：在存在频偏的情况下进行轨道间干扰消除
公开(公告)号：US08659846B2
公开(公告)日：2014-02-25
申请号：US13448218
申请日：2012-04-16
申请人： Naveen Kumar , Jason Bellorado , Marcus Marrow , Kai Keung Chan
发明人： Naveen Kumar , Jason Bellorado , Marcus Marrow , Kai Keung Chan
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B19/045 , G11B20/10046 , G11B2005/0002 , G11B2020/1238 , G11B2020/1292 , G11B2020/1298 , G11B2220/2516
摘要： An initial phase offset between a center track and a side track is determined. An initial side track pulse shape is determined using the initial phase offset and side track interference. The initial side track pulse shape minimizes a contribution of the side track interference to a center track bit. The contribution of the side track interference is removed from the center track bit using the initial side track pulse shape and the side track interference.
摘要翻译：确定中心轨道和侧轨迹之间的初始相位偏移。使用初始相位偏移和侧轨道干扰来确定初始侧轨道脉冲形状。初始侧轨道脉冲形状使得侧轨道干涉对中心轨道位的贡献最小化。使用初始侧轨道脉冲形状和侧轨道干扰，从中心轨道位置去除侧轨道干涉的贡献。

3. 发明授权

US08570680B2 Pad bit injection during read operation to improve format efficiency 有权
标题翻译：读取操作期间的Pad位注入以提高格式效率
公开(公告)号：US08570680B2
公开(公告)日：2013-10-29
申请号：US13113926
申请日：2011-05-23
申请人： Kwok W. Yeung , Kai Keung Chan , Paul K. Lai
发明人： Kwok W. Yeung , Kai Keung Chan , Paul K. Lai
IPC分类号： G11B5/09 , G11B5/02
CPC分类号： G11B5/09
摘要： Injecting pad bits during a read operation to improve format efficiency is disclosed. In some embodiments, a pad sequence associated with error correction is not stored in a sector on a disk. Instead, the pad sequence is merged at a read channel with data stored in a sector that is accessed by the read channel.
摘要翻译：公开了在读取操作期间注入焊盘位以提高格式效率。在一些实施例中，与纠错相关联的填充序列不存储在盘上的扇区中。相反，焊盘序列在读通道上与存储在由读通道访问的扇区中的数据合并。

4. 发明授权

US08489971B1 Hardware implementation scheme to adapt coefficients for data dependent noise prediction and soft output viterbi algorithm 有权
标题翻译：硬件实现方案，适应数据相关噪声预测和软输出维特比算法的系数
公开(公告)号：US08489971B1
公开(公告)日：2013-07-16
申请号：US13117955
申请日：2011-05-27
申请人： Kai Keung Chan , Kin Man Ng , Xin-Ning Song , Jason Bellorado
发明人： Kai Keung Chan , Kin Man Ng , Xin-Ning Song , Jason Bellorado
IPC分类号： H03M13/03
CPC分类号： H03M13/6331 , H03M13/1105 , H03M13/4138
摘要： A system for adapting coefficients of a soft output Viterbi algorithm (SOVA) is disclosed. The system includes a receiver configured to select an output of an SOVA detector at least in part based on a criterion. The receiver is configured to store the selected output of the SOVA detector. The receiver is further configured to store a signal that corresponds to the stored selected output of the SOVA detector, wherein the input to the SOVA detector is derived from the signal. The receiver is further configured to adapt a plurality of coefficients of the SOVA detector at least in part based on the stored selected output of the SOVA detector, the stored signal, and a corresponding data pattern. The system includes an interface coupled to the receiver and configured to receive samples.
摘要翻译：公开了一种用于适应软输出维特比算法（SOVA）的系数的系统。该系统包括被配置为至少部分地基于标准来选择SOVA检测器的输出的接收器。接收器被配置为存储所选择的SOVA检测器的输出。接收机还被配置为存储对应于所存储的SOVA检测器的所选输出的信号，其中从该信号导出到SOVA检测器的输入。接收机还被配置为至少部分地基于存储的SOVA检测器的所选输出，所存储的信号和对应的数据模式来适配SOVA检测器的多个系数。该系统包括耦合到接收器并被配置为接收采样的接口。

5. 发明授权

US07869547B1 Preamble acquisition without second order timing loops 有权
标题翻译：前导采集无二阶定时循环
公开(公告)号：US07869547B1
公开(公告)日：2011-01-11
申请号：US11784195
申请日：2007-04-04
申请人： Haitao Xia , Shih-Ming Shih , Ryan Yu , Marcus Marrow , Kai Keung Chan
发明人： Haitao Xia , Shih-Ming Shih , Ryan Yu , Marcus Marrow , Kai Keung Chan
IPC分类号： H04L27/06
CPC分类号： H04L7/08
摘要： Timing acquisition is performed. A first portion of a preamble having an end is sampled. A first phase value is determined based on the sampled first portion. A second portion of the preamble is sampled and a second phase value is determined based on the sampled second portion. An end phase value is extrapolated based at least in part the first phase value and the second phase value. A clock is adjusted using the extrapolated end phase value.
摘要翻译：执行定时采集。对具有结束的前同步码的第一部分进行采样。基于采样的第一部分确定第一相位值。对前导码的第二部分进行采样，并且基于采样的第二部分来确定第二相位值。至少部分地基于第一相位值和第二相位值来推定结束相位值。使用外插结束相位值调整时钟。

6. 发明授权

US09043688B1 Error data generation and application for disk drive applications 有权
标题翻译：磁盘驱动器应用程序的错误数据生成和应用程序
公开(公告)号：US09043688B1
公开(公告)日：2015-05-26
申请号：US13427599
申请日：2012-03-22
申请人： Kai Keung Chan , Xin-Ning Song , Jason Bellorado , Kwok W. Yeung
发明人： Kai Keung Chan , Xin-Ning Song , Jason Bellorado , Kwok W. Yeung
IPC分类号： H03M13/03 , H03M13/41 , H04L1/00 , G11B20/10 , H03M13/29
CPC分类号： H03M13/41 , G11B20/10009 , G11B20/10268 , H03M13/1111 , H03M13/2957 , H03M13/3723 , H03M13/4107 , H03M13/4146 , H03M13/6325 , H03M13/6343 , H04L1/0054 , H04L1/0059
摘要： Generating error data associated with decoding data is disclosed, including: processing an input sequence of samples associated with data stored on media using a detector and a decoder during a global iteration; and generating one or more error values based at least in part on one or more decision bits output by the detector or the decoder and the input sequence of samples.
摘要翻译：公开了生成与解码数据相关联的错误数据，包括：在全局迭代期间使用检测器和解码器处理与存储在媒体上的数据相关联的样本的输入序列; 以及至少部分地基于由所述检测器或所述解码器输出的一个或多个判定位和所述输入样本序列来生成一个或多个误差值。

7. 发明申请

US20120019950A1 PAD BIT INJECTION DURING READ OPERATION TO IMPROVE FORMAT EFFICIENCY 有权
标题翻译：读取操作期间的PAD位注入以提高格式效率
公开(公告)号：US20120019950A1
公开(公告)日：2012-01-26
申请号：US13113926
申请日：2011-05-23
申请人： Kwok W. Yeung , Kai Keung Chan , Paul K. Lai
发明人： Kwok W. Yeung , Kai Keung Chan , Paul K. Lai
IPC分类号： G11B5/09
CPC分类号： G11B5/09
摘要： Injecting pad bits during a read operation to improve format efficiency is disclosed. In some embodiments, a pad sequence associated with error correction is not stored in a sector on a disk. Instead, the pad sequence is merged at a read channel with data stored in a sector that is accessed by the read channel.
摘要翻译：公开了在读取操作期间注入焊盘位以提高格式效率。在一些实施例中，与纠错相关联的填充序列不存储在盘上的扇区中。相反，焊盘序列在读通道上与存储在由读通道访问的扇区中的数据合并。

8. 发明授权

US08077814B2 Preamble acquisition without second order timing loops 有权
标题翻译：前导采集无二阶定时循环
公开(公告)号：US08077814B2
公开(公告)日：2011-12-13
申请号：US12960043
申请日：2010-12-03
申请人： Haitao Xia , Shih-Ming Shih , Ryan Yu , Marcus Marrow , Kai Keung Chan
发明人： Haitao Xia , Shih-Ming Shih , Ryan Yu , Marcus Marrow , Kai Keung Chan
IPC分类号： H04L27/06
CPC分类号： H04L7/08
摘要： A clock is adjusted by obtaining a first plurality of samples and a second plurality of samples associated with a preamble portion of a data packet. The first plurality of samples and the second plurality of samples are sampled using a clock. A first intermediate value is determined based at least in part on the first plurality of samples and a second intermediate value is determined based at least in part on the second plurality of samples. An ending value associated with an end of the preamble portion is determined based at least in part on the first intermediate value and the second intermediate value. The clock is adjusted based at least in part on the ending value without use of a second order timing loop.
摘要翻译：通过获得与数据分组的前导部分相关联的第一多个样本和第二多个样本来调整时钟。使用时钟对第一多个采样和第二多个采样进行采样。至少部分地基于第一多个样本确定第一中间值，并且至少部分地基于第二多个样本来确定第二中间值。至少部分地基于第一中间值和第二中间值来确定与前导码部分的结尾相关联的结束值。时钟至少部分地基于结束值进行调整，而不使用二阶定时循环。

9. 发明授权

US07974033B1 Pad bit injection during read operation to improve format efficiency 有权
标题翻译：读取操作期间的Pad位注入以提高格式效率
公开(公告)号：US07974033B1
公开(公告)日：2011-07-05
申请号：US11787230
申请日：2007-04-13
申请人： Kwok W. Yeung , Kai Keung Chan , Paul K. Lai
发明人： Kwok W. Yeung , Kai Keung Chan , Paul K. Lai
IPC分类号： G11B5/09 , G11B5/02
CPC分类号： G11B5/09
摘要： Injecting pad bits during a read operation to improve format efficiency is disclosed. In some embodiments, a pad sequence associated with error correction is not stored in a sector on a disk. Instead, the pad sequence is merged at a read channel with data stored in a sector that is accessed by the read channel.
摘要翻译：公开了在读取操作期间注入焊盘位以提高格式效率。在一些实施例中，与纠错相关联的填充序列不存储在盘上的扇区中。相反，焊盘序列在读通道上与存储在由读通道访问的扇区中的数据合并。

10. 发明授权

US08631311B1 Data recovery using existing reconfigurable read channel hardware 有权
标题翻译：使用现有的可重新配置的读通道硬件进行数据恢复
公开(公告)号：US08631311B1
公开(公告)日：2014-01-14
申请号：US13453729
申请日：2012-04-23
申请人： Kai Keung Chan , Yu Kou , Xin-Ning Song , Wing Hui
发明人： Kai Keung Chan , Yu Kou , Xin-Ning Song , Wing Hui
IPC分类号： G06F11/00
CPC分类号： H04L1/0045 , H04L1/0057
摘要： A method for recovering data is disclosed. A sensed analog signal is converted into digital samples using an analog-to-digital converter (ADC). The digital samples are processed into processed digital samples using a first filter. The processed digital samples are decoded into decoded data. Whether the decoded data is acceptable is then determined. The processed digital samples are fed back to the first filter using a reprocessing circuit such that the processed digital samples are reprocessed into reprocessed digital samples in the event that the decoded data is unacceptable. A set of reprocessing coefficients is provided for the first filter to reprocess the processed digital samples.
摘要翻译：公开了一种恢复数据的方法。感测的模拟信号使用模数转换器（ADC）转换成数字采样。使用第一滤波器将数字样本处理成经处理的数字样本。经处理的数字样本被解码成解码数据。然后确定解码数据是否可接受。使用再处理电路将经处理的数字样本反馈到第一滤波器，使得在解码数据不可接受的情况下，经处理的数字样本被重新处理成再处理的数字样本。提供一组再处理系数用于第一滤波器以重新处理经处理的数字样本。

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