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1. 发明申请

WO2011124630A3 INTEGRATED DATA AND HEADER PROTECTION FOR TAPE DRIVES 审中-公开
标题翻译：磁带驱动器的集成数据和标题保护
公开(公告)号：WO2011124630A3
公开(公告)日：2011-12-22
申请号：PCT/EP2011055392
申请日：2011-04-07
申请人： IBM , 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标题保护的方法包括接收组织成行和列的数据阵列。数组被扩展为包含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纠错码（ECC）保护的两个维度，并为阵列中的头部提供单维度ECC保护。本文还公开了相应的装置。

2. 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。

3. 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）。

4. 发明申请

WO2009004084A1 RLL ENCODING FOR LTO-5 TAPE 审中-公开
标题翻译： RLL编码LTO-5胶带
公开(公告)号：WO2009004084A1
公开(公告)日：2009-01-08
申请号：PCT/EP2008/058699
申请日：2008-07-04
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CIDECIYAN, Roy, Daron , SEGER, Paul , TANAKA, Keisuke
发明人： CIDECIYAN, Roy, Daron , SEGER, Paul , TANAKA, Keisuke
IPC分类号： H03M5/14
CPC分类号： H03M5/145 , G11B20/1426 , G11B2220/90
摘要： Method and apparatus are provided for encoding and decoding rate-( s ( K +1))/( s ( K +1)+1) TCMTR( j,k,t,a ) codes, where s is the ECC symbol size in bits and K is the number of unencoded symbols that are interleaved with an ( s +1)-bit encoded block at the output of a rate- s /( s +1) encoder that encodes the r-th 5-bit symbol. K=m/s -1 where m=s(K +1) is the total number of bits to be encoded. Error propagation is reduced, thus allowing the ECC code to correct errors efficiently. Header error-rate is also reduced by eliminating occurrence of likely error events at the detector output. Although initially an RLL code may be designed for an ECC symbol size of s bits, the RLL encoding of the present invention may be used in conjunction with ECC schemes that utilize symbol sizes other than s bits.
摘要翻译：提供了编码和解码速率（s（K + 1））/（s（K + 1）+1）TCMTR（j，k，t，a）码的方法和装置，其中s是ECC符号大小位，K是在编码第r个5位符号的速率s /（s + 1）编码器的输出处与第（s + 1）位编码块交错的未编码符号的数量。 K = m / s-1其中m = s（K + 1）是要编码的总位数。错误传播减少，从而允许ECC代码有效地纠正错误。也可以通过消除检测器输出处可能发生的错误事件来减少报头错误率。虽然最初可以设计用于s比特的ECC符号大小的RLL码，但是本发明的RLL编码可以与利用除了s比特之外的符号大小的ECC方案结合使用。

5. 发明申请

WO2010088977A1 REWRITE-EFFICIENT ECC/INTERLEAVING FOR MULTI-TRACK RECORDING ON MAGNETIC TAPE 审中-公开
标题翻译：有效的ECC /用于磁带上的多轨跟踪记录
公开(公告)号：WO2010088977A1
公开(公告)日：2010-08-12
申请号：PCT/EP2009/065849
申请日：2009-11-25
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , MITTELHOLZER, Thomas , CIDECIYAN, Roy, Daron , ELEFTHERIOU, Evangelos , TANAKA, Keisuke , MATSUO, Hisato , SEGER, Paul
发明人： MITTELHOLZER, Thomas , CIDECIYAN, Roy, Daron , ELEFTHERIOU, Evangelos , TANAKA, Keisuke , MATSUO, Hisato , SEGER, Paul
IPC分类号： G11B20/12 , G11B20/18 , H03M13/27
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 K 2 rows and K 1 columns. For each unencoded subdata set, N 1 -K 1 C1-parity bytes are generated for each row and N 2 -K 2 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 arc 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。

6. 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。

7. 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。

8. 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

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