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41. 发明申请

US20130063835A1 Systems and Methods for Generating Predictable Degradation Bias 有权
标题翻译：用于产生可预测的降解偏差的系统和方法
公开(公告)号：US20130063835A1
公开(公告)日：2013-03-14
申请号：US13227544
申请日：2011-09-08
申请人： Shaohua Yang , Weijun Tan , Zongwang Li , Fan Zhang , Yang Han
发明人： Shaohua Yang , Weijun Tan , Zongwang Li , Fan Zhang , Yang Han
IPC分类号： G11B5/03 , G11C5/14 , G11B5/035
CPC分类号： G11B20/10379 , G11B5/09 , G11B19/048 , G11B20/10268 , G11B20/10296 , G11B2220/2516 , H03M13/2957 , H03M13/6331 , H03M13/6343
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes a data detector circuit and a bias calculation circuit. The data detector circuit is operable to apply a data detection algorithm to a first data set to yield a first series of soft decision data, and to apply the data detection algorithm to a second data set to yield a second series of soft decision data. The bias calculation circuit operable to calculate a series of bias values based at least in part on the first series of soft decision data and the second series of soft decision data. The series of bias values correspond to a conversion between the first series of soft decision data and the second series of soft decision data.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。作为示例，公开了包括数据检测器电路和偏置计算电路的数据处理电路。数据检测器电路可操作以将数据检测算法应用于第一数据集以产生第一系列软判决数据，并将数据检测算法应用于第二数据集以产生第二系列软判决数据。偏置计算电路可操作以至少部分地基于第一系列软判决数据和第二系列软判决数据来计算一系列偏置值。一系列偏差值对应于第一系列软判决数据与第二系列软判决数据之间的转换。

42. 发明授权

US08190976B1 High-speed interface for holographic storage read channel 有权
标题翻译：全息存储读取通道的高速接口
公开(公告)号：US08190976B1
公开(公告)日：2012-05-29
申请号：US11828975
申请日：2007-07-26
申请人： Zining Wu , Seo-How Low
发明人： Zining Wu , Seo-How Low
IPC分类号： H03M13/00
CPC分类号： H03M13/2906 , G06F11/10 , G11B20/10287 , G11B20/10379 , G11B2020/1836 , G11B2020/185 , G11B2220/2504 , H03M13/1102 , H03M13/1515
摘要： Embodiments of the present invention provide a read channel including a front end to receive an optical image, convert the optical image into multi-bit soft information, and to serially transmit the multi-bit soft information to other components of the read channel. Other embodiments may be described and claimed.
摘要翻译：本发明的实施例提供一种读通道，其包括用于接收光学图像的前端，将光学图像转换成多位软信息，并将多位软信息串行发送到读通道的其他部件。可以描述和要求保护其他实施例。

43. 发明申请

US20120047396A1 IDENTIFYING A DEFECT IN A DATA-STORAGE MEDIUM 有权
标题翻译：识别数据存储介质中的缺陷
公开(公告)号：US20120047396A1
公开(公告)日：2012-02-23
申请号：US12860653
申请日：2010-08-20
申请人： Shayan Srinivasa GARANI , Sivagnanam PARTHASARATHY
发明人： Shayan Srinivasa GARANI , Sivagnanam PARTHASARATHY
IPC分类号： G06F11/14
CPC分类号： G11B20/1833 , G06F11/2094 , G06F2201/805 , G06F2201/85 , G11B20/10037 , G11B20/10046 , G11B20/10064 , G11B20/10074 , G11B20/10222 , G11B20/10287 , G11B20/10296 , G11B20/10379 , G11B2020/1823 , G11B2020/1826 , G11B2020/185 , G11B2020/1863 , G11B2220/2516
摘要： An embodiment of a data-read path includes a defect detector and a data-recovery circuit. The defect detector is operable to identify a defective region of a data-storage medium, and the data-recovery circuit is operable to recover data from the data-storage medium in response to the defect detector. For example, such an embodiment may allow identifying a defective region of a data-storage disk caused, e.g., by a scratch or contamination, and may allow recovering data that was written to the defective region.
摘要翻译：数据读取路径的实施例包括缺陷检测器和数据恢复电路。缺陷检测器可操作以识别数据存储介质的缺陷区域，并且数据恢复电路可操作以响应于缺陷检测器从数据存储介质中恢复数据。例如，这样的实施例可以允许识别例如由划痕或污染导致的数据存储盘的缺陷区域，并且可以允许恢复写入到缺陷区域的数据。

44. 发明授权

US08023382B2 Information reproduction apparatus and information reproduction method 有权
标题翻译：信息再现装置和信息再现方法
公开(公告)号：US08023382B2
公开(公告)日：2011-09-20
申请号：US12827090
申请日：2010-06-30
申请人： Kinji Kayanuma
发明人： Kinji Kayanuma
IPC分类号： G11B7/00
CPC分类号： G11B20/10009 , G11B20/10037 , G11B20/10055 , G11B20/10111 , G11B20/10277 , G11B20/10296 , G11B20/10351 , G11B20/10379 , G11B20/10462
摘要： A small size circuit reproducing data with low error rate even when a signal includes a non-linear distortion is desired. In such a circuit, the Viterbi method is performed. In the Viterbi method, branch metrics are calculated based on a difference of a sampled reproduction signal and a predetermined expectation values. Path metrics are calculated from the branch metrics. Paths among the plurality of paths having the calculated path metrics and merging at a same state are compared with one another. Based on the magnitude of the compared path metrics, survivor path is selected. In the circuit, for the path metrics of paths merging at a same state, offset corresponding to a determination result until a merging point is added to the paths for the comparison for determining the survivor path from the plurality of merging paths.
摘要翻译：即使当信号包括非线性失真时，小尺寸电路也以低错误率再现数据。在这样的电路中，执行维特比法。在维特比方法中，基于采样再现信号和预定期望值的差来计算分支度量。路径指标由分支指标计算。将具有计算出的路径度量并在相同状态合并的多个路径中的路径彼此进行比较。基于比较路径度量的大小，选择幸存者路径。在电路中，对于在相同状态下合并的路径的路径度量，对应于确定结果的偏移量直到将合并点添加到用于比较的路径以确定来自多个合并路径的幸存路径。

45. 发明申请

US20100332892A1 HARD DISK DRIVE WITH DATA ERROR RECOVERY USING MULTIPLE READS AND DERIVED RELIABILITY INFORMATION 失效
标题翻译：使用多个读数和可靠性信息的数据错误恢复硬盘驱动器
公开(公告)号：US20100332892A1
公开(公告)日：2010-12-30
申请号：US12493925
申请日：2009-06-29
申请人： Yawshing Tang
发明人： Yawshing Tang
IPC分类号： G06F11/16 , G06F11/00
CPC分类号： G11B20/18 , G11B20/10009 , G11B20/10379 , G11B2020/183 , G11B2020/1836 , G11B2220/2516
摘要： A hard disk drive with a disk that has a plurality of data bits. The drive includes a circuit that reads each data bit n times and selects a value for the bit based on a reliability factor. The circuit may select a bit based at least in part on the most frequent occurrence of one of a plurality of values. For example, if more 0s occurred than 1s the bit would be set to 0. The reliability factor may be a ratio of the occurrence of 0s to the occurrence of 1s. A bit can be not selected or deselected if the reliability factor exceeds a threshold value.
摘要翻译：具有磁盘的具有多个数据位的硬盘驱动器。该驱动器包括读取每个数据位n次的电路，并根据可靠性因素选择该位的值。该电路可以至少部分地基于多个值中的一个值的最频繁出现来选择位。例如，如果比1更多的0发生，则该位将被设置为0.可靠性因子可以是0的发生与发生1的比率。如果可靠性因素超过阈值，则无法选择或取消选择。

46. 发明授权

US07817363B2 Single-pass defect detection for hard-disk drive systems 有权
标题翻译：硬盘驱动器系统的单通道缺陷检测
公开(公告)号：US07817363B2
公开(公告)日：2010-10-19
申请号：US12272255
申请日：2008-11-17
申请人： Keenan T. O'Brien , Richard Rauschmayer
发明人： Keenan T. O'Brien , Richard Rauschmayer
IPC分类号： G11B27/36
CPC分类号： G11B20/1879 , G11B19/048 , G11B20/10037 , G11B20/10296 , G11B20/10314 , G11B20/1037 , G11B20/10379 , G11B20/10416 , G11B20/10425 , G11B20/1217 , G11B20/182 , G11B20/1833 , G11B2020/1277 , G11B2020/1281 , G11B2020/1287 , G11B2020/1289 , G11B2020/1823 , G11B2020/1826 , G11B2020/1836 , G11B2020/1863 , G11B2020/1896 , G11B2220/2516
摘要： In one embodiment, defects are detected on the face of a hard-disk drive platter. A preamble, a sync mark, user or pseudorandom data, and a data pad are written to every sector on a track of the platter. Inter-sector gaps that separate consecutive sectors are overwritten with a fixed data pattern such that consecutive sectors are in phase lock with one another. After the track has been written, the track is read back and analyzed. Consecutive sectors are analyzed continuously without stopping. The preambles, sync marks, data pads, and overwritten inter-sector gaps are analyzed using suitable flaw-scan techniques. The user or pseudorandom data is analyzed using both data-integrity checks and suitable flaw-scan techniques. This process is repeated for all tracks on the disk, and defect detection is completed when all tracks have been analyzed.
摘要翻译：在一个实施例中，在硬盘驱动器盘的表面上检测到缺陷。前导码，同步标记，用户或伪随机数据以及数据焊盘被写入盘的轨道上的每个扇区。使用固定数据模式覆盖分开连续扇区的扇区间间隙，使得连续的扇区彼此相位锁定。轨道写入后，回读和分析轨迹。不间断连续分析连续部门。使用合适的缺陷扫描技术分析前导码，同步标记，数据块和覆盖的扇区间间隙。使用数据完整性检查和合适的缺陷扫描技术分析用户或伪随机数据。对磁盘上的所有轨道重复此过程，并且在分析了所有轨道时完成缺陷检测。

47. 发明授权

US07441175B2 Turbo product code implementation and decoding termination method and apparatus 有权
标题翻译： Turbo产品代码实现和解码终止方法和装置
公开(公告)号：US07441175B2
公开(公告)日：2008-10-21
申请号：US10799232
申请日：2004-03-12
申请人： Nan-Hsiung Yeh , Yan Li
发明人： Nan-Hsiung Yeh , Yan Li
IPC分类号： H03M13/00
CPC分类号： G11B20/1866 , G11B20/10379 , G11B20/1833 , G11B2020/1843 , G11B2020/1853 , G11B2020/1856 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/2963 , H03M13/2975 , H03M13/3994 , H03M13/4138 , H03M13/6325 , H03M13/6343
摘要： A method of decoding a turbo product code (TPC) code word comprises iteratively decoding the TPC code word using an iterative decoder. The method further comprises terminating the iterative decoding when the TPC code word satisfies a cyclic redundancy check (CRC). The TPC code word can include a plurality of square code blocks of user data, with CRC data bits appended to one of the plurality of code blocks instead of replacing user data within the code blocks. Apparatus for implementing the method are also provided.
摘要翻译：解码涡轮乘积代码（TPC）码字的方法包括使用迭代解码器对TPC码字进行迭代解码。该方法还包括当TPC码字满足循环冗余校验（CRC）时终止迭代解码。 TPC码字可以包括多个用户数据的平方码块，其中CRC数据位附加到多个码块之一，而不是代替码块内的用户数据。还提供了用于实现该方法的装置。

48. 发明申请

US20050204256A1 Turbo Product Code implementation and decoding termination method and apparatus 有权
标题翻译： Turbo产品代码实现和解码终止方法和装置
公开(公告)号：US20050204256A1
公开(公告)日：2005-09-15
申请号：US10799232
申请日：2004-03-12
申请人： Nan-Hsiung Yeh , Yan Li
发明人： Nan-Hsiung Yeh , Yan Li
IPC分类号： G06F11/00
CPC分类号： G11B20/1866 , G11B20/10379 , G11B20/1833 , G11B2020/1843 , G11B2020/1853 , G11B2020/1856 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/2963 , H03M13/2975 , H03M13/3994 , H03M13/4138 , H03M13/6325 , H03M13/6343
摘要： A method of decoding a turbo product code (TPC) code word comprises iteratively decoding the TPC code word using an iterative decoder. The method further comprises terminating the iterative decoding when the TPC code word satisfies a cyclic redundancy check (CRC). The TPC code word can include a plurality of square code blocks of user data, with CRC data bits appended to one of the plurality of code blocks instead of replacing user data within the code blocks. Apparatus for implementing the method are also provided.
摘要翻译：解码涡轮乘积码（TPC）码字的方法包括使用迭代解码器对TPC码字进行迭代解码。该方法还包括当TPC码字满足循环冗余校验（CRC）时终止迭代解码。 TPC码字可以包括多个用户数据的平方码块，其中CRC数据位附加到多个码块之一，而不是代替码块内的用户数据。还提供了用于实现该方法的装置。

49. 发明授权

US09082457B2 Data decoding control apparatus, data storage apparatus and data decoding method 有权
标题翻译：数据解码控制装置，数据存储装置和数据解码方法
公开(公告)号：US09082457B2
公开(公告)日：2015-07-14
申请号：US14021806
申请日：2013-09-09
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Tomokazu Okubo
IPC分类号： G11B20/18 , G11B20/10
CPC分类号： G11B20/1833 , G11B20/10268 , G11B20/10287 , G11B20/10379 , G11B20/18
摘要： According to one embodiment, a data decoding control apparatus includes a reading controller and a decoding controller. The reading controller reads the encoded data of a symbol unit bit by bit from a storage medium. The decoding controller computes a log-likelihood ratio (LLR) value of the symbol unit for estimate decoding calculation relative to the encoded data based on the number of bit inversion in a symbol of the encoded data and a correction factor.
摘要翻译：根据一个实施例，数据解码控制装置包括读取控制器和解码控制器。读取控制器从存储介质逐位读取符号单元的编码数据。解码控制器基于编码数据的符号中的比特反转的数量和校正因子，计算相对于编码数据进行估计解码计算的符号单元的对数似然比（LLR）值。

50. 发明申请

US20150143208A1 SIGNAL QUALITY EVALUATION APPARATUS, SIGNAL QUALITY EVALUATION METHOD, AND REPRODUCING DEVICE 有权
标题翻译：信号质量评估装置，信号质量评估方法和再现装置
公开(公告)号：US20150143208A1
公开(公告)日：2015-05-21
申请号：US14403482
申请日：2013-04-26
申请人： Sony Corporation
发明人： Junya Shiraishi
IPC分类号： H03M13/45
CPC分类号： H03M13/456 , G11B20/10268 , G11B20/10277 , G11B20/10305 , G11B20/10361 , G11B20/10379 , G11B20/1833 , H03M13/41 , H03M13/6343
摘要： Provided is a signal quality evaluation apparatus, including an error pattern detection unit to which binarized data obtained by performing a PRML decoding process on a reproduced signal of bit information by partial response equalization and maximum likelihood decoding is input, the error pattern detection unit configured to detect at least one specific error pattern that is a bit pattern that is longer than a constraint length of the PRML decoding process, a metric difference calculation unit configured to calculate a metric difference of the at least one specific error pattern that has been detected by the error pattern detection unit, and an index value generation unit configured to generate an index value of a reproduced signal quality by using a distribution of the metric difference obtained by the metric difference calculation unit.
摘要翻译：提供了一种信号质量评估装置，包括错误模式检测单元，其中通过对通过部分响应均衡和最大似然解码的比特信息的再现信号执行PRML解码处理获得的二进制数据被输入，所述错误模式检测单元被配置为检测作为比PRML解码处理的约束长度更长的位模式的至少一个特定错误模式;度量差计算单元，被配置为计算由所述PRML解码处理检测到的所述至少一个特定错误模式的度量差异误差模式检测单元和索引值生成单元，被配置为通过使用由度量差异计算单元获得的度量差异的分布来生成再现信号质量的索引值。

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