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41. 发明授权

US06462898B2 Disk drive with information encoded in the position error signal fields 失效
标题翻译：磁盘驱动器，其信息编码在位置误差信号字段中
公开(公告)号：US06462898B2
公开(公告)日：2002-10-08
申请号：US09097994
申请日：1998-06-16
申请人： Mario Blaum , William John Kabelac , Louis Joseph Serrano , Mantle Man-Hon Yu
发明人： Mario Blaum , William John Kabelac , Louis Joseph Serrano , Mantle Man-Hon Yu
IPC分类号： G11B5596
CPC分类号： G11B20/1803 , G11B5/59611 , G11B2220/20
摘要： There is disclosed an error correction and detection method and apparatus for retreiving predetermined data, e.g. servo data, from the position error signal (PES) fields of a disk in a data storage system . In the preferred embodiment the PES data such as the track number is mapped into codewords of an error correction code (ECC) which are then further divided into a set of symbols which are mapped onto a second set of bit vectors which have a constant weight. The preferred encoding method is selected to equalize the analog signal characteristics of the PES fields so that minimal, if any, change in the conventional servo detection circuitry needed to use the PES fields of the invention both as analog and digital information.
摘要翻译：公开了用于检索预定数据的纠错和检测方法和装置，例如，伺服数据，来自数据存储系统中的盘的位置误差信号（PES）字段。在优选实施例中，诸如轨道号的PES数据被映射到纠错码（ECC）的码字中，然后这些码字被进一步划分成映射到具有恒定权重的第二组比特矢量的一组码元。选择优选的编码方法以均衡PES场的模拟信号特性，使得将本发明的PES场用作模拟和数字信息所需的常规伺服检测电路中的最小（如果有的话）改变。

42. 发明授权

US6141783A Error propagation limiting encoder/decoder for multilevel decision feedback equalization 失效
标题翻译：用于多级判决反馈均衡的误差传播限制编码器/解码器
公开(公告)号：US6141783A
公开(公告)日：2000-10-31
申请号：US58509
申请日：1998-04-10
申请人： Jonathan James Ashley , Mario Blaum , Brian Harry Marcus , Constantin Michael Melas
发明人： Jonathan James Ashley , Mario Blaum , Brian Harry Marcus , Constantin Michael Melas
IPC分类号： G11B20/18 , H03M13/00 , H04L1/00 , H04L25/03 , G06F11/00 , G06F11/30
CPC分类号： H04L1/0041 , G11B20/18 , H03M13/00 , H04L1/0045 , H04L25/03057
摘要： The present invention is an encoder and decoder that eliminate all infinitely propagating error sequences for many sets of taps. The encoder includes an input circuit operable to receive an unencoded data signal and an encoding circuit, coupled to the input circuit, operable to generate the encoded data signal using a code that eliminates infinitely propagating error sequences when the encoded data signal is recovered by a decision feedback equalizer data recovery channel. The decoder includes an input circuit operable to receive an encoded data signal and a decoding table, coupled to the input circuit, operable to generate the decoded data signal using a code that eliminates infinitely propagating error sequences when the encoded data signal is recovered by a decision feedback equalizer data recovery channel.
摘要翻译：本发明是一种编码器和解码器，其消除了许多抽头集合的所有无限传播的误差序列。编码器包括可操作以接收未编码数据信号的输入电路和耦合到输入电路的编码电路，其可操作以使用代码消除无编传播的错误序列的编码数据信号，当编码数据信号由判定恢复时反馈均衡器数据恢复通道。解码器包括可操作以接收编码数据信号的输入电路和耦合到输入电路的解码表，该编码数据信号和解码表用于当编码数据信号被决定恢复时，使用消除无限传播的错误序列的代码产生解码数据信号反馈均衡器数据恢复通道。

43. 发明授权

US08869006B2 Partial-maximum distance separable (PMDS) erasure correcting codes for storage arrays 有权
标题翻译：用于存储阵列的部分最大距离可分离（PMDS）擦除校正码
公开(公告)号：US08869006B2
公开(公告)日：2014-10-21
申请号：US13552271
申请日：2012-07-18
申请人： Mario Blaum , James L. Hafner , Steven R. Hetzler
发明人： Mario Blaum , James L. Hafner , Steven R. Hetzler
IPC分类号： G11C29/00 , G06F11/10
CPC分类号： G06F11/1076 , G06F11/108 , G06F11/1092 , G06F2211/1057 , G06F2211/1059 , H03M13/033
摘要： Embodiments of the invention relate to correcting erasures in a storage array. A read stripe is received from a plurality of n storage devices. The read stripe includes an array of entries arranged in m rows and n columns with each column corresponding to one of the storage devices. The entries include data entries and mr+s parity entries. Each row contains at least r parity entries generated from the data entries according to a partial maximum distance separable (PMDS) code. It is determined that the read stripe includes at least one erased entry, at most mr+s erased entries and that no row has more than r+s erased entries. The erased entries are reconstructed from the non-erased entries, resulting in a recovered read stripe.
摘要翻译：本发明的实施例涉及校正存储阵列中的擦除。从多个n个存储设备接收读取条带。读取的条带包括以m行和n列排列的条目数组，每列对应于一个存储设备。条目包括数据条目和mr + s奇偶校验条目。每行至少包含根据部分最大距离可分离（PMDS）代码从数据条目生成的r个奇偶校验项。确定读取的条带包括至少一个被擦除的条目，至多mr + s个擦除条目，并且没有行具有多于r + s个擦除的条目。从未擦除的条目重建已擦除的条目，导致恢复的读取条带。

44. 发明授权

US08301948B2 Storage device with adaptive error-correcting code for improved areal efficiency 有权
标题翻译：具有自适应纠错码的存储设备，可提高面积效率
公开(公告)号：US08301948B2
公开(公告)日：2012-10-30
申请号：US12538367
申请日：2009-08-10
申请人： Mario Blaum , Kurt A. Rubin , Manfred E. Schabes
发明人： Mario Blaum , Kurt A. Rubin , Manfred E. Schabes
IPC分类号： G06F11/00 , G06F11/30 , G08C25/00 , H03M13/00 , H04L1/00 , G11C29/00
CPC分类号： G11B20/1833 , G06F11/1068 , G11B2020/10759 , G11B2020/185 , G11B2020/1853
摘要： A method for adaptively applying an error-correcting code to a storage device is disclosed. A determination is made that a system is in an idle state of input/output requests. First data symbols are copied into a first location within a buffer. First data symbol errors corrected using a first error-correcting code. Second data symbols including corrected bits are written in a second location on the recording media with a second error-correcting code. An error number for the second data symbols in the second location is determined. If the error number is below a first threshold error number, the first data symbols are deleted. If the error number is above the first threshold error number, the second data symbols are deleted.
摘要翻译：公开了一种用于将纠错码自适应地应用于存储装置的方法。确定系统处于空闲状态的输入/输出请求。第一数据符号被复制到缓冲器内的第一位置。使用第一纠错码校正的第一数据符号错误。包括校正位的第二数据符号用第二纠错码写入记录介质上的第二位置。确定第二位置中的第二数据符号的错误号。如果错误号低于第一阈值错误号，则删除第一数据符号。如果错误号高于第一阈值错误号，则删除第二数据符号。

45. 发明申请

US20110035634A1 STORAGE DEVICE WITH ADAPTIVE ERROR-CORRECTING CODE FOR IMPROVED AREAL EFFICIENCY 有权
标题翻译：具有适应性错误修正代码的存储设备，用于提高AREAL效率
公开(公告)号：US20110035634A1
公开(公告)日：2011-02-10
申请号：US12538367
申请日：2009-08-10
申请人： Mario Blaum , Kurt A. Rubin , Manfred E. Schabes
发明人： Mario Blaum , Kurt A. Rubin , Manfred E. Schabes
IPC分类号： G06F12/16 , G06F11/10 , H03M13/29
CPC分类号： G11B20/1833 , G06F11/1068 , G11B2020/10759 , G11B2020/185 , G11B2020/1853
摘要： A method for adaptively applying an error-correcting code to a storage device is disclosed. A determination is made that a system is in an idle state of input/output requests. First data symbols are copied into a first location within a buffer. First data symbol errors corrected using a first error-correcting code. Second data symbols including corrected bits are written in a second location on the recording media with a second error-correcting code. An error number for the second data symbols in the second location is determined. If the error number is below a first threshold error number, the first data symbols are deleted. If the error number is above the first threshold error number, the second data symbols are deleted.
摘要翻译：公开了一种用于将纠错码自适应地应用于存储装置的方法。确定系统处于空闲状态的输入/输出请求。第一数据符号被复制到缓冲器内的第一位置。使用第一纠错码校正的第一数据符号错误。包括校正位的第二数据符号用第二纠错码写入记录介质上的第二位置。确定第二位置中的第二数据符号的错误号。如果错误号低于第一阈值错误号，则删除第一数据符号。如果错误号高于第一阈值错误号，则删除第二数据符号。

46. 发明授权

US07696908B2 Techniques for reducing error propagation using modulation codes having a variable span 有权
标题翻译：使用具有可变跨度的调制码减少误差传播的技术
公开(公告)号：US07696908B2
公开(公告)日：2010-04-13
申请号：US11326357
申请日：2006-01-04
申请人： Mario Blaum , Ksenija Lakovic
发明人： Mario Blaum , Ksenija Lakovic
IPC分类号： H03M7/00
CPC分类号： G11B20/1426 , G11B20/10175 , G11B2220/2516 , H03M5/145 , H03M13/53
摘要： Techniques are provided for reducing error propagation in encoded data using Fibonacci modulation codes. The Fibonacci modulation codes have a Fibonacci base with a variable span that limits error propagation. Some of the elements in the Fibonacci base have a larger span than limited span elements in the base. Errors occurring in bit positions of an encoded sequence that correspond to the limited span elements do not propagate to adjacent bytes in the decoded sequence. The Fibonacci modulation codes can also have a relatively high code rate.
摘要翻译：提供了使用斐波纳契调制码减少编码数据中的误差传播的技术。斐波纳契调制码具有可变跨度的斐波那契基极，限制误差传播。斐波那契基地中的一些元素的跨度比底座中的有限跨度元素大。对应于有限跨度元件的编码序列的比特位置发生的错误不会传播到解码序列中的相邻字节。斐波纳契调制码也可以具有相对较高的码率。

47. 发明授权

US07388938B2 Method for bit-byte synchronization in sampling a data string 有权
标题翻译：数据串采样中位字节同步的方法
公开(公告)号：US07388938B2
公开(公告)日：2008-06-17
申请号：US10856706
申请日：2004-05-28
申请人： Mario Blaum , Richard New , Bruce Wilson
发明人： Mario Blaum , Richard New , Bruce Wilson
IPC分类号： H04L7/00
CPC分类号： G11B20/10009 , G11B20/10046 , H04L7/0066 , H04L7/04 , H04L25/497
摘要： Bit and byte synchronization for sampling and decoding a data string is provided a single data field u. The data string x has pre-pended to it a short string of 1s (ones), followed by u to yield a string y= . . . 1111, u, x. The string is pre-coded by convolution with 1/(1⊕D2). PRML-sampling of y starts at an initial phase, and vectors are obtained from that string by sampling at pre-selected phases following the initial sampling point. The vectors of y are compared with vectors corresponding to PRML samples of an initial set of bits in u obtained at predetermined phases. The pair of y, u vectors exhibiting the minimum Euclidian distance yields a sampling correction value by which the initial sampling phase is corrected and a new initial sampling point preceding x is determined. Here, bit and byte synchronization have been achieved and sampling of x proceeds at the corrected phase, from the new initial sampling point.
摘要翻译：为数据串采样和解码的位和字节同步提供单个数据字段u。数据串x已经预先提供了一个1s（1）的短串，其次是u得到一个字符串y =。。。 1111，u，x。该字符串通过卷积与1 /（1⊕D^{2 ）进行预编码。 y的PRML采样从初始阶段开始，并且通过在初始采样点之后的预选阶段进行采样从该串中获得向量。将y的向量与对应于在预定阶段获得的u的初始位组的PRML样本相对应的向量进行比较。呈现最小欧几里德距离的一对y，u向量产生采样校正值，通过该取样校正值校正初始采样相位，并且确定x之前的新的初始采样点。这里，已经实现了比特和字节同步，并且从新的初始采样点在校正阶段进行x的采样。}

48. 发明授权

US07227710B2 Method for operating disk drive having improved timing marks 有权
标题翻译：用于操作具有改进的定时标记的磁盘驱动器的方法
公开(公告)号：US07227710B2
公开(公告)日：2007-06-05
申请号：US10676632
申请日：2003-09-30
申请人： Mario Blaum , Mantle M. Yu
发明人： Mario Blaum , Mantle M. Yu
IPC分类号： G11B5/09
CPC分类号： G11B5/59627
摘要： A method for operating a disk drive having timing marks (TMs) on the disk that are chosen to reduce the probability of misidentification of a TM in the presence of read errors. The disk drive searches for TMs within a fixed TM search window which extends past the TM on the disk. A TM preferably maximizes the post-shift sliding distance for m post-shifts of the TM pattern, where m corresponds to the TM search window boundary. In this manner, the probability of a misidentification of the TM due to a post-shift having a small distance from the TM pattern is reduced. The TM pattern also provides pre-shift error resistance.
摘要翻译：一种用于操作具有在盘上的定时标记（TM）的磁盘驱动器的方法，所述定时标记（TM）被选择为在存在读取错误的情况下降低TM的错误识别的可能性。磁盘驱动器在固定的TM搜索窗口中搜索延伸超过TM上的TM的TM。 TM TM优选地最大化TM模式的m个移位之后的移位后滑动距离，其中m对应于TM搜索窗口边界。以这种方式，由于与TM图案之间的距离较小的移位后的TM的误识别的可能性降低。 TM模式还提供了前移误差电阻。

49. 发明授权

US07042666B2 Disk drive having improved timing marks 失效
标题翻译：磁盘驱动器具有改进的时序标记
公开(公告)号：US07042666B2
公开(公告)日：2006-05-09
申请号：US10676482
申请日：2003-09-30
申请人： Mario Blaum , Mantle M. Yu
发明人： Mario Blaum , Mantle M. Yu
IPC分类号： G11B5/09
CPC分类号： G11B5/59633 , G11B5/012 , G11B27/3027 , G11B2005/001 , G11B2220/20
摘要： A disk drive has timing marks (TMs) on the disk, that are chosen to reduce the probability of misidentification of a TM in the presence of read errors. The disk drive searches for TMs within a fixed TM search window which extends past the TM on the disk. A TM preferably maximizes the post-shift sliding distance for m post-shifts of the TM pattern, where m corresponds to the TM search window boundary. In this manner, the probability of a misidentification of the TM due to a post-shift having a small distance from the TM pattern is reduced. The TM pattern also provides pre-shift error resistance.
摘要翻译：磁盘驱动器在磁盘上具有定时标记（TM），该定时标记被选择为在存在读取错误的情况下降低TM错误识别的可能性。磁盘驱动器在固定的TM搜索窗口中搜索延伸超过TM上的TM的TM。 TM TM优选地最大化TM模式的m个移位之后的移位后滑动距离，其中m对应于TM搜索窗口边界。以这种方式，由于与TM图案之间的距离较小的移位后的TM的误识别的可能性降低。 TM模式还提供了前移误差电阻。

50. 发明授权

US07032140B2 Method and system for synchronization in the presence of thermal asperity 失效
标题翻译：存在热不均匀性的同步方法和系统
公开(公告)号：US07032140B2
公开(公告)日：2006-04-18
申请号：US09849397
申请日：2001-05-07
申请人： Mario Blaum , Arvind Motibhai Patel
发明人： Mario Blaum , Arvind Motibhai Patel
IPC分类号： H04L7/04 , G11B5/09
CPC分类号： H03M13/6343 , G11B20/10009 , G11B2020/1287 , G11B2020/1476 , H03M13/41
摘要： A method (and system) of finding byte synchronization over random data, which includes selecting a synchronization symbol maximizing the Hamming distance when slid over itself, and appending the synchronization symbol to random data.
摘要翻译：一种在随机数据上寻找字节同步的方法（和系统），其包括选择在自身滑动时最大化汉明距离的同步符号，以及将同步符号附加到随机数据。

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