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    DATA STORAGE SYSTEMS
    31.
    发明申请
    DATA STORAGE SYSTEMS 审中-公开
    数据存储系统

    公开(公告)号：US20090089645A1

    公开(公告)日：2009-04-02

    申请号：US12058151

    申请日：2008-03-28

    申请人： Roy D. Cideciyan ,  Ajay Dholakia ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer

    发明人： Roy D. Cideciyan ,  Ajay Dholakia ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer

    IPC分类号： H03M13/00

    CPC分类号： G11B20/1833

    摘要： 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： 用于在数据存储系统中解码数据的方法和装置。 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到的钉扎数据重新生成第一纠错比特流。

    DATA ENCODING IN SOLID STATE STORAGE DEVICES
    33.
    发明申请
    DATA ENCODING IN SOLID STATE STORAGE DEVICES 有权
    数据编码在固态存储设备中

    公开(公告)号：US20130013974A1

    公开(公告)日：2013-01-10

    申请号：US13582768

    申请日：2011-03-23

    申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer

    发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Thomas Mittelholzer

    IPC分类号： H03M13/29

    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 of a solid state storage device, where s f 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. If each of the first and second codewords comprises N q-ary symbols where q=pk, k is a positive integer and p is a prime number, the q-ary code alphabet can be matched to the s-ary storage by ensuring that q and s are uth and vth powers respectively of a common base r, where u and v are positive integers and k f 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设备的s级存储中记录的输入数据的方法和装置，其中sf 2.根据第一和第二BCH码，输入数据字以M个输入数据字的组进行编码， 对于每个组，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。 然后将M组第一码字集合记录在s级存储器中。 如果第一和第二码字中的每一个包括N q个符号，其中q = pk，k是正整数，p是质数，则可以通过确保q- 和s分别是公共基础r的uth和vth权力，其中u和v是正整数和kfu，由此p（k / u）v = s。

    DATA MANAGEMENT IN SOLID STATE STORAGE SYSTEMS
    34.
    发明申请
    DATA MANAGEMENT IN SOLID STATE STORAGE SYSTEMS 有权
    固态存储系统中的数据管理

    公开(公告)号：US20120260150A1

    公开(公告)日：2012-10-11

    申请号：US13516627

    申请日：2010-12-16

    申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Robert Haas ,  Xiao-Yu Hu ,  Ilias Iliadas ,  Thomas Mittelholzer

    发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Robert Haas ,  Xiao-Yu Hu ,  Ilias Iliadas ,  Thomas Mittelholzer

    IPC分类号： G11C29/04 ,  G06F11/16

    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 of a solid state storage system. Input data is stored in successive groups of data write locations in the solid state storage. Each group comprises a set of write locations in each of a plurality of logical subdivisions of the solid state storage. 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.

    摘要翻译： 提供了用于控制数据管理操作的方法和装置，包括固态存储系统的固态存储中的数据的存储。 输入数据存储在固态存储器中的连续的数据写入位置组中。 每个组包括在固态存储器的多个逻辑子部分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。

    Head design for writing servo patterns on magnetic tape
    37.
    发明授权
    Head design for writing servo patterns on magnetic tape 有权
    在磁带上写入伺服模式的头设计

    公开(公告)号：US07864487B2

    公开(公告)日：2011-01-04

    申请号：US12118251

    申请日：2008-05-09

    申请人： Giovanni Cherubini ,  Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Jens Jelitto ,  Mark A. Lantz

    发明人： Giovanni Cherubini ,  Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Jens Jelitto ,  Mark A. Lantz

    IPC分类号： G11B5/584 ,  G11B5/265

    CPC分类号： G11B5/584

    摘要： A servo write head is provided and is configured to simultaneously write at least two servo patterns in respective servo bands on linear magnetic tape. Centerlines of the servo patterns are substantially uniformly spaced in the lateral direction. In addition, the servo patterns of all adjacent respective servo bands are displaced relative to each other in a longitudinal direction by an amount that is related to a length of a servo frame and a type of the servo patterns.

    摘要翻译： 提供了伺服写入头，并被配置为在线性磁带上的相应伺服带中同时写入至少两个伺服模式。 伺服图案的中心线在横向方向上基本上均匀间隔开。 此外，所有相邻的各个伺服带的伺服模式在纵向方向上相对于伺服帧的长度和伺服模式的类型相关的量而移位。

    ECC INTERLEAVING FOR MULTI-TRACK RECORDING ON MAGNETIC TAPE
    38.
    发明申请
    ECC INTERLEAVING FOR MULTI-TRACK RECORDING ON MAGNETIC TAPE 有权
    用于磁带上的多轨迹记录的ECC交互

    公开(公告)号：US20100180180A1

    公开(公告)日：2010-07-15

    申请号：US12351738

    申请日：2009-01-09

    申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Hisato Matsuo ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

    发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Hisato Matsuo ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

    IPC分类号： H03M13/27 ,  G06F11/10

    CPC分类号： H03M13/2909 ,  G11B20/1202 ,  G11B20/1833 ,  G11B20/1866 ,  G11B2020/1836 ,  G11B2020/1853 ,  G11B2220/93 ,  H03M13/15 ,  H03M13/1515

    摘要： Conventional C2 coding and interleaving for multi-track data tape in LTO-¾ do not support recording data onto a number of concurrent tracks which is not a power of two. Higher-rate longer C2 codes, which do not degrade error rate performance, are provided. An adjustable format and interleaving scheme accommodates future tape drives in which the number of concurrent tracks is not necessarily a power of two. A data set is segmented into a plurality of unencoded subdata sets and parity bytes are generated for each row and column. The parameters of the C2 code include N2 as the least common multiple of the number of possible tracks to which codeword objects are to be written. COs are formed from N2 C1 codewords, mapped onto a logical data track according to information within headers of the CO and modulation encoded into synchronized COs which are written to the tape.

    摘要翻译： LTO-¾中的多轨数据磁带的常规C2编码和交织不支持将数据记录到不是2的幂的多个并发轨道上。 提供了更高速率的更长的C2代码，这不会降低错误率性能。 可调格式和交错方案适应将来的磁带驱动器，其中并发轨道的数量不一定是二的幂。 将数据集分割为多个未编码的子数据集，并为每行和列生成奇偶校验字节。 C2码的参数包括N2作为要写入码字对象的可能轨道数的最小公倍数。 CO由N2 C1码字形成，根据CO的头部内的信息和被编码成被写入到磁带的同步的CO的调制信号映射到逻辑数据轨道上。

    REWRITE-EFFICIENT ECC/INTERLEAVING FOR MULTI-TRACK RECORDING ON MAGNETIC TAPE
    39.
    发明申请
    REWRITE-EFFICIENT ECC/INTERLEAVING FOR MULTI-TRACK RECORDING ON MAGNETIC TAPE 有权
    有效的ECC /用于磁带上的多轨跟踪记录

    公开(公告)号：US20100177422A1

    公开(公告)日：2010-07-15

    申请号：US12351747

    申请日：2009-01-09

    申请人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Hisato Matsuo ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

    发明人： Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Hisato Matsuo ,  Thomas Mittelholzer ,  Paul J. Seger ,  Keisuke Tanaka

    IPC分类号： G11B5/09 ,  G11B5/78

    CPC分类号： G11B20/1833 ,  G11B20/1201 ,  G11B20/1866 ,  G11B2020/1287 ,  G11B2020/1289 ,  G11B2020/1446 ,  G11B2020/1836 ,  G11B2220/93 ,  H03M13/27 ,  H03M13/271

    摘要： For writing data to multi-track tape, a received data set is received and segmented into unencoded subdata sets, each comprising an array having K2 rows and K1 columns. For each unencoded subdata set, N1−K1 C1-parity bytes are generated for each row and N2−K2 C2-parity bytes are generated for each column. The C1 and C2 parity bytes are appended to the ends of the row and column, respectively, to form encoded C1 and C2 codewords, respectively. All of the C1 codewords per data set are endowed with a specific codeword header to form a plurality of partial codeword objects (PCOs). Each PCO is mapped onto a logical data track according to information within the header. On each logical data track, adjacent PCOs are merged to form COs which are modulation encoded and mapped into synchronized COs. Then T synchronized COs are written simultaneously to the data tape where T is the number of concurrent active tracks on the data tape.

    摘要翻译： 为了将数据写入多轨磁带，接收到的数据集并被分割成未编码的子数据集，每个子​​集包括具有K2行和K1列的阵列。 对于每个未编码的子数据集，为每行生成N1-K1 C1-奇偶校验字节，并为每列生成N2-K2 C2-奇偶校验字节。 C1和C2奇偶校验字节分别附加到行和列的末端，分别形成编码的C1和C2码字。 每个数据集的所有C1码字都具有特定的码字头以形成多个部分码字对象（PCO）。 每个PCO根据标题内的信息被映射到逻辑数据轨道上。 在每个逻辑数据轨道上，相邻的PCO被合并以形成被调制编码并被映射到同步的CO中的CO。 然后将T同步的CO同时写入数据磁带，其中T是数据磁带上的并发活动磁道的数量。

    HEAD DESIGN FOR WRITING SERVO PATTERNS ON MAGNETIC TAPE
    40.
    发明申请
    HEAD DESIGN FOR WRITING SERVO PATTERNS ON MAGNETIC TAPE 有权
    用于在磁带上书写伺服模式的头设计

    公开(公告)号：US20090279202A1

    公开(公告)日：2009-11-12

    申请号：US12118251

    申请日：2008-05-09

    申请人： Giovanni Cherubini ,  Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Jens Jelitto ,  Mark A. Lantz

    发明人： Giovanni Cherubini ,  Roy D. Cideciyan ,  Evangelos S. Eleftheriou ,  Jens Jelitto ,  Mark A. Lantz

    IPC分类号： G11B5/584

    CPC分类号： G11B5/584

    摘要： A servo write head is provided and is configured to simultaneously write at least two servo patterns in respective servo bands on linear magnetic tape. Centerlines of the servo patterns are substantially uniformly spaced in the lateral direction. In addition, the servo patterns of all adjacent respective servo bands are displaced relative to each other in a longitudinal direction by an amount that is related to a length of a servo frame and a type of the servo patterns.

    摘要翻译： 提供了伺服写入头，并被配置为在线性磁带上的相应伺服带中同时写入至少两个伺服模式。 伺服图案的中心线在横向方向上基本上均匀间隔开。 此外，所有相邻的各个伺服带的伺服模式在纵向方向上相对于伺服帧的长度和伺服模式的类型相关的量而移位。