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1. 发明申请

WO2011073940A1 DATA MANAGEMENT IN SOLID STATE STORAGE SYSTEMS 审中-公开
标题翻译：固态存储系统中的数据管理
公开(公告)号：WO2011073940A1
公开(公告)日：2011-06-23
申请号：PCT/IB2010/055875
申请日：2010-12-16
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CIDECIYAN, Roy D. , ELEFTHERIOU, Evangelos S. , HAAS, Robert , HU, Xiao-Yu , ILIADIS, Ilias , MITTELHOLZER, Thomas
发明人： CIDECIYAN, Roy D. , ELEFTHERIOU, Evangelos S. , HAAS, Robert , HU, Xiao-Yu , ILIADIS, Ilias , MITTELHOLZER, Thomas
IPC分类号： G06F11/10
CPC分类号： G06F11/1008 , G06F11/1012 , G06F11/1068 , G06F11/108
摘要： Methods and apparatus are provided for controlling data management operations including storage of data in solid state storage (6) of a solid state storage system (5). Input data is stored in successive groups of data write locations in the solid state storage (6). Each group comprises a set of write locations in each of a plurality of logical subdivisions of the solid state storage (6). The input data to be stored in each group is encoded in accordance with first and second linear error correction codes. The encoding is performed by constructing from the input data to be stored in each group a logical array of rows and columns of data symbols. The rows and columns are respectively encoded in accordance with the first and second linear error correction codes to produce an encoded array in which all rows correspond to respective first codewords and columns correspond to respective second codewords. The encoding and storage operation is performed such that, in each said group, the encoded input data comprises a plurality of first codewords in each of a plurality of the logical subdivisions and each logical subdivision contains a portion of each of the second codewords for that group.
摘要翻译：提供了用于控制数据管理操作的方法和装置，包括在固态存储系统（5）的固态存储（6）中存储数据。输入数据存储在固态存储器（6）中的连续的数据写入位置组中。每个组包括在固态存储器（6）的多个逻辑子部分中的每一个中的一组写入位置。要存储在每个组中的输入数据根据第一和第二线性纠错码进行编码。通过从输入数据中构成数据符号的行和列的逻辑阵列，来构成编码。行和列分别根据第一和第二线性纠错码编码以产生编码阵列，其中所有行对应于相应的第一码字和列对应于相应的第二码字。执行编码和存储操作，使得在每个所述组中，编码的输入数据包括多个逻辑子部分中的每一个中的多个第一码字，并且每个逻辑细分包含该组的每个第二码字的一部分。

2. 发明申请

WO2005064611A1 DATA STORAGE SYSTEMS 审中-公开
标题翻译：数据存储系统
公开(公告)号：WO2005064611A1
公开(公告)日：2005-07-14
申请号：PCT/IB2004/003761
申请日：2004-11-17
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CIDECIYAN, Roy D. , DHOLAKIA, Ajay , ELEFTHERIOU, Evangelos S. , GALBRAITH, Richard L. , HANSON, Weldon M. , MITTELHOLZER, Thomas , OENNING, Travis R.
发明人： CIDECIYAN, Roy D. , DHOLAKIA, Ajay , ELEFTHERIOU, Evangelos S. , GALBRAITH, Richard L. , HANSON, Weldon M. , MITTELHOLZER, Thomas , OENNING, Travis R.
IPC分类号： G11B20/14
CPC分类号： G11B20/1833
摘要： A data storage system includes an encoder subsystem comprising an error correction code encoder, a modulation encoder, and a precoder, and a decoder subsystem similarly comprising a detector, an inverse precoder, a channel decoder, and an error correction code decoder. The error correction encoder applies an error correction code to the incoming user bit stream, and the modulation encoder applies so called modulation or constrained coding to the error correction coded bit stream. The precoder applies so called precoding to the modulation encoded bit stream. However, this precoding is applied to selected portions of the bit stream only. There can also be a permutation step where the bit sequence is permuted after the modulation encoder before precoding is applied by the precoder. The decoder subsystem operates in the inverse manner.
摘要翻译：数据存储系统包括编码器子系统，包括纠错码编码器，调制编码器和预编码器，以及类似地包括检测器，逆预编码器，信道解码器和纠错码解码器的解码器子系统。纠错编码器对输入用户比特流应用纠错码，并且调制编码器将所谓的调制或约束编码应用于纠错编码比特流。预编码器将所谓的预编码应用于调制编码比特流。然而，该预编码仅应用于位流的选定部分。还可以存在一个置换步骤，其中在由预编码器施加预编码之前，该位序列在调制编码器之后被置换。解码器子系统以相反的方式运行。

3. 发明申请

WO2011121490A1 TWO -LEVEL BCH CODES FOR SOLID STATE STORAGE DEVICES 审中-公开
标题翻译：用于固态存储设备的两个BCH代码
公开(公告)号：WO2011121490A1
公开(公告)日：2011-10-06
申请号：PCT/IB2011/051219
申请日：2011-03-23
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CIDECIYAN, Roy D. , ELEFTHERIOU, Evangelos S. , MITTELHOLZER, Thomas
发明人： CIDECIYAN, Roy D. , ELEFTHERIOU, Evangelos S. , MITTELHOLZER, Thomas
IPC分类号： H03M13/15 , H03M13/29 , G06F11/10
CPC分类号： H03M13/2906 , G06F11/1072 , H03M13/152 , H03M13/2942
摘要： Methods and apparatus are provided for encoding input data for recording in s-level storage(2)of a solid state storage device(1), where s≥2. Input data words are encoded in groups of M input data words in accordance with first and second BCH codes to produce, for each group, a set of M first codewords of the first BCH code. The set of M first codewords is produced such that at least one predetermined linear combination of the M first codewords produces a second codeword of the second BCH code, this second BCH code being a sub- code of the first BCH code. The sets of M first codewords are then recorded in the s-level storage(2).If each of the first and second codewords comprises N q-ary symbols where q =p k , k is a positive integer and p is a prime number, the q-ary code alphabet can be matched to the s-ary storage (2) by ensuring that q and s are u th and v th powers respectively of a common base r, where u and v are positive integers and k≥u, whereby p (k/u)v = s.
摘要翻译：提供了用于编码用于在固态存储装置（1）的s级存储器（2）中记录的输入数据的方法和装置，其中s = 2。输入数据字根据第一和第二BCH码以M个输入数据字的组进行编码，以针对每个组产生第一BCH码的一组M个第一码字。产生M个第一码字集合，使得M个第一码字的至少一个预定线性组合产生第二BCH码的第二码字，该第二BCH码是第一BCH码的子码。这些M个第一码字的集合然后被记录在s级存储器（2）中。如果第一和第二码字中的每一个包括N个q个符号，其中q = pk，k是正整数，p是素数，通过确保q和s分别是公共基础r的uth和vth功率，其中u和v是正整数，并且k = u，可以将q元代码字母表与s存储器（2）匹配，由此p （k / u）v = s。

4. 发明申请

WO2004107338A1 DATA STORAGE SYSTEMS 审中-公开
标题翻译：数据存储系统
公开(公告)号：WO2004107338A1
公开(公告)日：2004-12-09
申请号：PCT/IB2004/001532
申请日：2004-05-06
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CIDECIYAN, Roy, D. , DHOLAKIA, Ajay , ELEFTHERIOU, Evangelos, S. , MITTELHOLZER, Thomas
发明人： CIDECIYAN, Roy, D. , DHOLAKIA, Ajay , ELEFTHERIOU, Evangelos, S. , MITTELHOLZER, Thomas
IPC分类号： G11B20/10
CPC分类号： G11B20/1833
摘要： Described is a method and apparatus for decoding data in a data storage system. In operation, a detector generates an output bit stream in dependence on a data block received from a storage subsystem of the data storage system. A post processor connected to the detector generates a first error corrected bit stream in dependence on the output bit stream and the data block. An error correction decoder connected to the post processor generates a second error corrected bit stream in dependence on the first error corrected bit stream and also generates a checksum in dependence of the second error corrected bit stream. A feedback path supplies from the error correction decoder to the post processor pinning data indicative of locations of correct bits in the second error corrected bit stream in the event that the checksum is indicative of errors in the second error corrected bit stream and the second error corrected bit stream comprises at least one correct interleave. The post processor regenerates the first error corrected bit stream in dependence on the pinning data received from the error correction decoder.
摘要翻译：描述了一种用于对数据存储系统中的数据进行解码的方法和装置。在操作中，检测器根据从数据存储系统的存储子系统接收的数据块产生输出位流。连接到检测器的后处理器根据输出比特流和数据块生成第一纠错比特流。连接到后处理器的纠错解码器根据第一纠错比特流产生第二纠错比特流，并且还根据第二纠错比特流产生校验和。在校验和指示第二纠错比特流中的错误并且校正的第二错误的情况下，反馈路径从错误校正解码器向后处理器提供钉扎指示第二纠错比特流中的正确比特的位置的数据位流包括至少一个正确的交错。后处理器根据从纠错解码器接收的钉扎数据重新生成第一纠错比特流。

5. 发明申请

WO2012163250A1 TRACK-DEPENDENT DATA RANDOMIZATION MITIGATING FALSE VFO DETECTION 审中-公开
标题翻译：跟踪依赖的数据随机化，减轻虚拟VFO检测
公开(公告)号：WO2012163250A1
公开(公告)日：2012-12-06
申请号：PCT/CN2012/076089
申请日：2012-05-25
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM (CHINA) CO., LIMITED , CIDECIYAN, Roy D. , MITTELHOLZER, Thomas , SEGER, Paul J. , TANAKA, Keisuke
发明人： CIDECIYAN, Roy D. , MITTELHOLZER, Thomas , SEGER, Paul J. , TANAKA, Keisuke
IPC分类号： G11B5/008
CPC分类号： G11B5/0083 , G11B5/09 , G11B20/10009 , G11B20/10222 , G11B20/10259 , G11B20/1833 , G11B2220/956 , H03M13/09 , H03M13/27 , H03M13/2909 , H03M13/2945 , H03M13/6561 , H04L1/0042
摘要： A method for randomizing data to mitigate false VFO detection is described. In one embodiment, such a method includes simultaneously receiving multiple input data streams. Each input data stream is associated with a different track on a magnetic tape medium. The input data streams are simultaneously scrambled to produce multiple randomized data streams. The input data streams are scrambled such that different bit patterns are produced in the randomized data streams even where corresponding bit patterns in the input data streams are identical. The randomized data streams are simultaneously written to their associated data tracks on the magnetic tape medium. A corresponding apparatus is also described.
摘要翻译：描述用于随机化数据以减轻虚假VFO检测的方法。在一个实施例中，这种方法包括同时接收多个输入数据流。每个输入数据流与磁带介质上的不同轨道相关联。输入数据流被同时加扰以产生多个随机数据流。输入数据流被加扰，使得在随机数据流中产生不同的位模式，即使输入数据流中相应的位模式是相同的。随机数据流被同时写入到磁带介质上的相关联的数据轨道上。还描述了相应的装置。

6. 发明申请

WO2010078992A1 REWRITING CODEWORD OBJECTS TO MAGNETIC DATA TAPE UPON DETECTION OF AN ERROR 审中-公开
标题翻译：在检测到错误的情况下，将编码对象写入磁性数据带
公开(公告)号：WO2010078992A1
公开(公告)日：2010-07-15
申请号：PCT/EP2009/065331
申请日：2009-11-17
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , SEGER, Paul , CIDECIYAN, Roy, Daron , MITTELHOLZER, Thomas , TANAKA, Keisuke
发明人： SEGER, Paul , CIDECIYAN, Roy, Daron , MITTELHOLZER, Thomas , TANAKA, Keisuke
IPC分类号： G11B20/18
CPC分类号： G11B20/1883 , G11B20/1833 , G11B20/1879 , G11B2020/183 , G11B2020/1836 , G11B2220/90
摘要： During a read-after-write operation on magnetic tape, a first SCO is formed which includes two encoded processed user data units and is one of T SCOs in a first SCO set. The user data units are each one of T user data units in first and second user data unit sets, respectively, within the first SCO set. The first SCO set is written to the magnetic tape and is immediately read. When an error is detected in one of the user data units, a second SCO is formed to include the first user data unit and, only if an error is not detected in a user data unit in the other user data unit set, to not include the other user data unit, the second SCO being one of T SCOs in a second SCO set. Then, the second SCO set is rewritten to a later position on the tape later.
摘要翻译：在磁带读写操作期间，形成第一SCO，其包括两个经编码的处理的用户数据单元，并且是第一SCO组中的T SCO之一。用户数据单元分别在第一SCO集合内的第一和第二用户数据单元组中的T个用户数据单元中的每一个。第一个SCO组写入磁带并立即读取。当在用户数据单元之一中检测到错误时，形成第二SCO以包括第一用户数据单元，并且仅当在另一个用户数据单元组中的用户数据单元中没有检测到错误时，不包括另一用户数据单元，第二SCO是第二SCO组中的T SCO之一。然后，第二个SCO组被重新写入磁带的稍后位置。

7. 发明申请

WO2013046066A1 READ-DETECTION IN SOLID-STATE STORAGE DEVICES 审中-公开
标题翻译：固态存储器件中的读取检测
公开(公告)号：WO2013046066A1
公开(公告)日：2013-04-04
申请号：PCT/IB2012/053237
申请日：2012-06-27
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , MITTELHOLZER, Thomas , PAPANDREOU, Nikolaos , POZIDIS, Charalampos
发明人： MITTELHOLZER, Thomas , PAPANDREOU, Nikolaos , POZIDIS, Charalampos
IPC分类号： G11C11/56
CPC分类号： G11C11/5678 , G11C2211/563 , G11C2211/5634
摘要： Methods and apparatus are provided for detecting N-symbol codewords stored in multilevel-cell solid-state memory. Each codeword is a permutation of an N-symbol vector of a predefined set of N-symbol vectors. The symbols of each codeword, each of which has one of q symbol values, are stored in respective q-level cells of solid state memory (2), where N≥q>2. The memory cells storing a group of codewords are read to obtain respective read signals each comprising N signal components corresponding to respective symbols of a codeword. The components of each read signal are ordered according to signal level to produce an ordered read signal. Corresponding components of the ordered read signals are averaged to produce an average read signal. A reference signal level corresponding to each of the q levels of the memory cells is determined in dependence on the average read signal and predefined probabilities of occurrence of each symbol value at each symbol position in a said codeword whose symbols are ordered according to symbol value. The codeword corresponding to each read signal is then detected in dependence on the reference signal levels.
摘要翻译：提供了用于检测存储在多电平单元固态存储器中的N个符号码字的方法和装置。每个码字是N个符号向量的预定义集合的N个符号向量的置换。每个码字的符号，每个码字具有q个符号值之一，被存储在固态存储器（2）的相应的q级单元中，其中N> = q> 2。读取存储一组码字的存储单元以获得每个包括与码字的各个符号对应的N个信号分量的各个读信号。每个读取信号的分量根据信号电平排序以产生有序的读取信号。将有序读取信号的相应组件平均以产生平均读取信号。根据平均读取信号和符号根据符号值排序的所述码字中的每个符号位置处的每个符号位置的每个符号值的出现的预定概率来确定对应于存储器单元的每个q电平的参考信号电平。然后根据参考信号电平检测对应于每个读取信号的码字。

8. 发明申请

WO2011124630A2 INTEGRATED DATA AND HEADER PROTECTION FOR TAPE DRIVES 审中-公开
标题翻译：集成数据和磁带保护用于磁带驱动
公开(公告)号：WO2011124630A2
公开(公告)日：2011-10-13
申请号：PCT/EP2011/055392
申请日：2011-04-07
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CIDECIYAN, Roy, Daron , MATSUO, Hisato , MITTELHOLZER, Thomas , OHTANI, Kenji , SEGER, Paul , TANAKA, Keisuke
发明人： CIDECIYAN, Roy, Daron , MATSUO, Hisato , MITTELHOLZER, Thomas , OHTANI, Kenji , SEGER, Paul , TANAKA, Keisuke
IPC分类号： G11B20/18
CPC分类号： G11B20/18 , G11B2020/184 , G11B2020/1853 , G11B2220/90
摘要： A method for integrating data and header protection in tape drives includes receiving an array of data organized into rows and columns. The array is extended to include one or more headers for each row of data in the array. The method provides two dimensions of error correction code (ECC) protection for the data in the array and a single dimension of ECC protection for the headers in the array. A corresponding apparatus is also disclosed herein.
摘要翻译：在磁带驱动器中集成数据和头部保护的方法包括接收一组数据组织成行和列。该数组被扩展以包括数组中每行数据的一个或多个头。该方法为阵列中的数据提供了二维纠错码（ECC）保护，并为阵列中的标头提供了ECC保护的一个维度。本文还公开了相应的装置。

9. 发明申请

WO2008138707A1 RLL ENCODING 审中-公开
标题翻译： RLL编码
公开(公告)号：WO2008138707A1
公开(公告)日：2008-11-20
申请号：PCT/EP2008/054827
申请日：2008-04-21
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , CIDECIYAN, Roy, Daron , ELEFTHERIOU, Evangelos , MITTELHOLZER, Thomas , SEGER, Paul , TANAKA, Keisuke
发明人： CIDECIYAN, Roy, Daron , ELEFTHERIOU, Evangelos , MITTELHOLZER, Thomas , SEGER, Paul , TANAKA, Keisuke
IPC分类号： H03M5/14 , G11B20/14
CPC分类号： H03M5/145 , G11B20/1426 , G11B2020/1446 , G11B2020/1473 , G11B2220/90 , G11B2220/956
摘要： An unencoded m -bit data input sequence is divided into a block of n bits and a block of m-n bits. The block of n bits is divided into a first set of n +1 encoded bits, wherein at least one of P 1subblocks of the first set satisfies a G , M and I constraints. The first set of n +1 encoded bits is mapped into a second set of n +1 encoded bits wherein at least one of P 2 subblocks of the second set gives rise to at least Q 1 transitions after 1/(1+ D 2 ) precoding. A second set of n +1 encoded bits is divided into P 3 encoded subblocks and the P 3 encoded subblocks are interleaved among ( m-n )/s unencoded symbols so as to form a ( m+ 1)-bit output sequence codeword which is then stored on a data storage medium.
摘要翻译：未编码的m位数据输入序列被分成n位块和m-n位块。 n位的块被分成第一组n + 1个编码比特，其中第一组的P1块中的至少一个满足G，M和I约束。第一组n + 1编码比特被映射到第n + 1编码比特的第二组，其中第二组的P2子块中的至少一个在1 /（1 + D）之后产生至少Q1个转换

10. 发明申请

WO2012072330A1 DECODING ENCODED DATA CONTAINING INTEGRATED DATA AND HEADER PROTECTION 审中-公开
标题翻译：解码包含整合数据和编码保护的编码数据
公开(公告)号：WO2012072330A1
公开(公告)日：2012-06-07
申请号：PCT/EP2011/068006
申请日：2011-10-14
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , TANAKA, Keisuke , CIDECIYAN, Roy, Daron , MATSUO, Hisato , MITTELHOLZER, Thomas , OHTANI, Kenji , SEGER, Paul
发明人： TANAKA, Keisuke , CIDECIYAN, Roy, Daron , MATSUO, Hisato , MITTELHOLZER, Thomas , OHTANI, Kenji , SEGER, Paul
IPC分类号： G06F11/10
CPC分类号： G06F11/1012 , H03M13/1515 , H03M13/2909
摘要： A method for decoding encoded data comprising integrated data and header protection is disclosed herein. In one embodiment, such a method includes receiving an extended data array. The extended data array includes a data array organized into rows and columns, headers appended to the rows of the data array, column ECC parity protecting the columns of the data array, and row ECC parity protecting the rows and headers combined. The method then decodes the extended data array. Among other operations, this decoding step includes checking the header associated with each row to determine whether the header is legal. If the header is legal, the method determines the contribution of the header to the corresponding row ECC parity. The method then reverses the contribution of the header to the corresponding row ECC parity. A corresponding apparatus (i.e., a tape drive configured to implement the above-described method) is also disclosed herein.
摘要翻译：本文公开了一种用于对包括集成数据和报头保护的编码数据进行解码的方法。在一个实施例中，这种方法包括接收扩展数据阵列。扩展数据阵列包括组织成行和列的数据阵列，附加到数据阵列行的标题，保护数据阵列列的ECC ECC奇偶校验和保护行和头组合的行ECC奇偶校验。该方法然后解码扩展数据数组。在其他操作中，该解码步骤包括检查与每行关联的标题以确定标题是否合法。如果标题是合法的，则该方法确定标题对相应行ECC奇偶校验的贡献。该方法然后将标题的贡献反转到对应的行ECC奇偶校验。本文还公开了相应的装置（即，被配置为实现上述方法的磁带驱动器）。

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