专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07064687B1 Techniques for modulating data using short block encoders 失效
标题翻译：使用短块编码器调制数据的技术
公开(公告)号：US07064687B1
公开(公告)日：2006-06-20
申请号：US11048273
申请日：2005-01-31
申请人： Mario Blaum , Roy D. Cideciyan , Evangelos S. Eleftheriou , Richard Leo Galbraith , Ksenija Lakovic , Thomas Mittelholzer , Travis Oenning , Bruce A. Wilson
发明人： Mario Blaum , Roy D. Cideciyan , Evangelos S. Eleftheriou , Richard Leo Galbraith , Ksenija Lakovic , Thomas Mittelholzer , Travis Oenning , Bruce A. Wilson
IPC分类号： H03M7/00
CPC分类号： H03M13/53 , G11B20/10009 , G11B20/1426 , G11B20/1809 , H03M5/145
摘要： Techniques are provided for applying modulation constraints to data streams using a short block encoder. A short block encoder encodes a subset of the bits in a data stream. Then, the even and odd interleaves in a data stream are separated into two data paths. A first modulation encoder encodes the even interleave according to a first modulation constraint. A second modulation encoder encodes the odd interleave according to a second modulation constraint, which in general coincides with the modulation constraint for even interleave.
摘要翻译：提供了使用短块编码器将调制限制应用于数据流的技术。短块编码器编码数据流中的比特的子集。然后，数据流中的偶数和奇数交织被分成两个数据路径。第一调制编码器根据第一调制约束编码偶数交织。第二调制编码器根据第二调制约束对奇数交织进行编码，其通常与用于偶数交织的调制约束一致。

2. 发明授权

US07071851B1 Techniques for implementing non-uniform constraints in modulation encoded data 失效
标题翻译：在调制编码数据中实现非均匀约束的技术
公开(公告)号：US07071851B1
公开(公告)日：2006-07-04
申请号：US11048597
申请日：2005-01-31
申请人： Mario Blaum , Roy D. Cideciyan , Evangelos S. Eleftheriou , Richard Leo Galbraith , Ksenija Lakovic , Thomas Mittelholzer , Travis Oenning , Bruce A. Wilson
发明人： Mario Blaum , Roy D. Cideciyan , Evangelos S. Eleftheriou , Richard Leo Galbraith , Ksenija Lakovic , Thomas Mittelholzer , Travis Oenning , Bruce A. Wilson
IPC分类号： H03M7/00
CPC分类号： H03M5/145 , G11B20/1426
摘要： Non-uniform modulation encoding techniques are provided to prevent data from containing bit patterns that are prone to errors during read back. Modulation encoding is performed on a data stream to remove error prone bit patterns. Unconstrained data, such as error check parity, that is inserted into the modulated data stream may contain error prone bit patterns. Stricter modulation constraints are enforced on bits that are next to the unconstrained data, than on the remaining bits. By enforcing stricter modulation constraints on these bits, an entire data bit stream can have a desired modulation constraint.
摘要翻译：提供非均匀调制编码技术以防止数据包含在回读期间容易出错的位模式。对数据流执行调制编码以消除容易出错的位模式。插入调制数据流的无约束数据（如错误校验奇偶校验）可能包含易错位模式。对于与无约束数据相邻的位，对其余位执行更严格的调制约束。通过对这些位执行更严格的调制约束，整个数据比特流可以具有期望的调制限制。

3. 发明授权

US07030789B1 Techniques for applying modulation constraints to data using periodically changing symbol mappings 有权
标题翻译：使用周期性变化的符号映射对数据应用调制约束的技术
公开(公告)号：US07030789B1
公开(公告)日：2006-04-18
申请号：US11002970
申请日：2004-12-01
申请人： Roy D. Cideciyan , Evangelos S. Eleftheriou , Richard Leo Galbraith , Thomas Mittelholzer , Travis Oenning
发明人： Roy D. Cideciyan , Evangelos S. Eleftheriou , Richard Leo Galbraith , Thomas Mittelholzer , Travis Oenning
IPC分类号： H03M7/02
CPC分类号： H03M7/04 , G06F11/08 , G11B20/1426 , G11B2020/1473 , H03M5/145 , H03M7/06 , H03M13/31
摘要： Techniques are provided for applying modulation constraints to data by using periodically changing symbol mappings to replace certain prohibited error prone data patterns. Initially, user data in a first base is mapped to integers of a second base using a base conversion technique. The integers in the second base correspond to symbols. Subsequently, periodically changing symbol mappings are performed during which prohibited symbols generated during base conversion are mapped to permitted symbols. The periodically changing symbol mappings occur in multiple phases, and the prohibited symbols are different in each phase. The resulting data is processed by a precoder in some embodiments.
摘要翻译：提供了通过使用周期性变化的符号映射来替代某些禁止的易错数据模式来向数据应用调制约束的技术。最初，使用基本转换技术将第一基站中的用户数据映射到第二基站的整数。第二个碱基中的整数对应于符号。随后，执行周期性地改变的符号映射，其中在基本转换期间产生的禁止符号被映射到允许的符号。周期性变化的符号映射发生在多个阶段，禁止符号在每个阶段都不同。在一些实施例中，所生成的数据由预编码器处理。

4. 发明授权

US07590920B2 Reduced complexity error correction encoding techniques 有权
标题翻译：降低复杂度纠错编码技术
公开(公告)号：US07590920B2
公开(公告)日：2009-09-15
申请号：US11198943
申请日：2005-08-05
申请人： Shaohua Yang , Mario Blaum , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi
发明人： Shaohua Yang , Mario Blaum , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi
IPC分类号： H03M13/00
CPC分类号： H03M13/29 , H03M13/1515 , H03M13/152 , H03M13/2903 , H03M13/2906
摘要： An error correction encoder inserts redundant parity information into a data stream to improve system reliability. The encoder can generate the redundant parity information using a composite code. Dummy bits are inserted into the data stream in locations reserved for parity information generated by subsequent encoding. The error correction code can have a uniform or a non-uniform span. The span corresponds to consecutive channel bits that are within a single block of a smaller parity code that is used to form a composite code. The span lengths can be variant across the whole codeword by inserting dummy bits in less than all of the spans.
摘要翻译：纠错编码器将冗余奇偶校验信息插入到数据流中，以提高系统的可靠性。编码器可以使用复合代码生成冗余奇偶校验信息。在由后续编码生成的奇偶校验信息保留的位置中将虚拟位插入到数据流中。纠错码可以具有均匀或不均匀的间距。该跨度对应于用于形成复合代码的较小奇偶码的单个块内的连续通道位。跨越整个码字的跨度长度可以通过在少于所有跨度的位置插入虚拟位而变化。

5. 发明申请

US20100235718A1 Decoding Techniques for Correcting Errors Using Soft Information 有权
标题翻译：使用软信息纠正错误的解码技术
公开(公告)号：US20100235718A1
公开(公告)日：2010-09-16
申请号：US12787120
申请日：2010-05-25
申请人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
发明人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
IPC分类号： H03M13/45 , G06F11/10
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译：使用第一和第二级解码器执行两级纠错解码。可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。第一级解码器产生软信息。软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。软信息还可以包括每个最可能的错误事件的误差度量值。第二级解码器使用外部分量代码基于软信息生成校正的校正子值。然后选择对应于校正的综合征值的最可能的网格路径。

6. 发明授权

US07725800B2 Decoding techniques for correcting errors using soft information 有权
标题翻译：使用软信息纠正错误的解码技术
公开(公告)号：US07725800B2
公开(公告)日：2010-05-25
申请号：US11198945
申请日：2005-08-05
申请人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
发明人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
IPC分类号： H03M13/00 , H03M13/03
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译：使用第一和第二级解码器执行两级纠错解码。可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。第一级解码器产生软信息。软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。软信息还可以包括每个最可能的错误事件的误差度量值。第二级解码器使用外部分量代码基于软信息生成校正的校正子值。然后选择对应于校正的综合征值的最可能的网格路径。

7. 发明授权

US08423873B2 Decoding techniques for correcting errors using soft information 有权
标题翻译：使用软信息纠正错误的解码技术
公开(公告)号：US08423873B2
公开(公告)日：2013-04-16
申请号：US12787120
申请日：2010-05-25
申请人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
发明人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
IPC分类号： H03M13/00
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译：使用第一和第二级解码器执行两级纠错解码。可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。第一级解码器产生软信息。软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。软信息还可以包括每个最可能的错误事件的误差度量值。第二级解码器使用外部分量代码基于软信息生成校正的校正子值。然后选择对应于校正的综合征值的最可能的网格路径。

8. 发明申请

US20070043997A1 Reduced complexity error correction encoding techniques 有权
标题翻译：降低复杂度纠错编码技术
公开(公告)号：US20070043997A1
公开(公告)日：2007-02-22
申请号：US11198943
申请日：2005-08-05
申请人： Shaohua Yang , Mario Blaum , Richard Galbraith , Ksenija Lakovic , Yuan Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi
发明人： Shaohua Yang , Mario Blaum , Richard Galbraith , Ksenija Lakovic , Yuan Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi
IPC分类号： H03M13/00
CPC分类号： H03M13/29 , H03M13/1515 , H03M13/152 , H03M13/2903 , H03M13/2906
摘要： An error correction encoder inserts redundant parity information into a data stream to improve system reliability. The encoder can generate the redundant parity information using a composite code. Dummy bits are inserted into the data stream in locations reserved for parity information generated by subsequent encoding. The error correction code can have a uniform or a non-uniform span. The span corresponds to consecutive channel bits that are within a single block of a smaller parity code that is used to form a composite code. The span lengths can be variant across the whole codeword by inserting dummy bits in less than all of the spans.
摘要翻译：纠错编码器将冗余奇偶校验信息插入到数据流中，以提高系统的可靠性。编码器可以使用复合代码生成冗余奇偶校验信息。在由后续编码生成的奇偶校验信息保留的位置中将虚拟位插入到数据流中。纠错码可以具有均匀或不均匀的间距。该跨度对应于用于形成复合代码的较小奇偶码的单个块内的连续通道位。跨越整个码字的跨度长度可以通过在少于所有跨度的位置插入虚拟位而变化。

9. 发明申请

US20070044006A1 Decoding techniques for correcting errors using soft information 有权
标题翻译：使用软信息纠正错误的解码技术
公开(公告)号：US20070044006A1
公开(公告)日：2007-02-22
申请号：US11198945
申请日：2005-08-05
申请人： Shaohua Yang , Richard Galbraith , Ksenija Lakovic , Yuan Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce Wilson
发明人： Shaohua Yang , Richard Galbraith , Ksenija Lakovic , Yuan Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce Wilson
IPC分类号： H03M13/00
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译：使用第一和第二级解码器执行两级纠错解码。可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。第一级解码器产生软信息。软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。软信息还可以包括每个最可能的错误事件的误差度量值。第二级解码器使用外部分量代码基于软信息生成校正的校正子值。然后选择对应于校正的综合征值的最可能的网格路径。

10. 发明授权

US07424074B2 Optimizing detector target polynomials in read/write channels to achieve best error rate performance in disk drives 有权
标题翻译：在读/写通道中优化检测器目标多项式，以实现磁盘驱动器中最佳的错误率性能
公开(公告)号：US07424074B2
公开(公告)日：2008-09-09
申请号：US11110187
申请日：2005-04-19
申请人： Yuan Xing Lee , Richard Leo Galbraith , Travis Oenning , Weldon Hanson
发明人： Yuan Xing Lee , Richard Leo Galbraith , Travis Oenning , Weldon Hanson
IPC分类号： H04B1/10
CPC分类号： G11B20/24 , G11B20/10009 , G11B20/10046
摘要： Embodiments of the invention provide techniques for optimizing the detector target polynomials in read/write channels to achieve the best error rate performance in recording devices. In one embodiment, a method of obtaining a detector target polynomial of a read/write channel to achieve best error rate performance in a recording device comprises: providing an initial detector target for the read/write channel; measuring a noise autocorrelation of the read/write channel at the output of equalizer using channel hardware; computing a noise autocorrelation at the output of the 1st stage target based on the measured noise autocorrelation of the read/write channel at the output of equalizer; calculating optimal coefficients for the noise whitening filter; and obtaining the optimal detector target polynomial of the read/write channel using the calculated coefficients for noise whitening filter.
摘要翻译：本发明的实施例提供了用于优化读/写通道中的检测器目标多项式以在记录装置中实现最佳误码率性能的技术。在一个实施例中，获得读/写通道的检测器目标多项式以在记录装置中实现最佳误码率性能的方法包括：为读/写通道提供初始检测器目标; 使用信道硬件测量均衡器输出处的读/写通道的噪声自相关; 基于在均衡器的输出处的读/写通道的测量的噪声自相关来计算第1阶段目标的输出处的噪声自相关; 计算噪声增白滤波器的最优系数; 并使用所计算的噪声增白滤波器的系数来获得读/写信道的最佳检测器目标多项式。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式