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1. 发明申请

WO2009136374A2 HEAD DESIGN FOR WRITING SERVO PATTERNS ON MAGNETIC TAPE 审中-公开
标题翻译：用于在磁带上书写伺服图案的头设计
公开(公告)号：WO2009136374A2
公开(公告)日：2009-11-12
申请号：PCT/IB2009/051882
申请日：2009-05-07
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , CIDECIYAN, Roy, D. , ELEFTHERIOU, Evangelos, S. , JELITTO, Jens , LANTZ, Mark, A.
发明人： CHERUBINI, Giovanni , CIDECIYAN, Roy, D. , ELEFTHERIOU, Evangelos, S. , JELITTO, Jens , LANTZ, Mark, A.
IPC分类号： G11B5/584 , G11B21/10
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。

2. 发明申请

WO2009153702A1 WORD SYNCHRONIZATION FOR SERVO READ SIGNALS IN TAPE DRIVES 审中-公开
标题翻译：用于伺服读取信号在磁带驱动器中的字同步
公开(公告)号：WO2009153702A1
公开(公告)日：2009-12-23
申请号：PCT/IB2009/052440
申请日：2009-06-09
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , CIDECIYAN, Roy D. , ELEFTHERIOU, Evangelos S. , JELITTO, Jens
发明人： CHERUBINI, Giovanni , CIDECIYAN, Roy D. , ELEFTHERIOU, Evangelos S. , JELITTO, Jens
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Methods and apparatus are provided for detecting L-bit sync words occurring at N-bit intervals in PPM-encoded servo pattern read signals read from magnetic tape (3) in tape drives (1). A soft output detector (11) processes the PPM-encoded servo pattern read signal to produce a series of soft output samples corresponding to respective bits encoded in the servo pattern. A sync word detector (12) then produces block correlation values for respective positions of a sliding L-sample block in the soft output sample series. The block correlation values are produced by calculating, at each block position, bit correlation values indicating correlation between respective samples and corresponding bits of the sync word, and summing each bit correlation value minus a predetermined function of the corresponding sample value. The sync word detector (12) then detects a sync word at the block position with the maximum block correlation value in an (N+L-1)-sample sequence of the soft output sample series.
摘要翻译：提供了用于检测在磁带驱动器（1）中从磁带（3）读取的PPM编码的伺服模式读取信号中以N位间隔发生的L位同步字的方法和装置。软输出检测器（11）处理PPM编码的伺服模式读取信号以产生对应于在伺服模式中编码的各个位的一系列软输出采样。同步字检测器（12）然后产生软输出采样序列中的滑动L样本块的相应位置的块相关值。通过在每个块位置计算指示各个采样和同步字的对应位之间的相关性并将每个位相关值减去相应采样值的预定函数的相加值来产生块相关值。然后，同步字检测器（12）在软输出采样序列的（N + L-1） - 采样序列中检测具有最大块相关值的块位置处的同步字。

3. 发明申请

WO2009153740A2 SERVO CONTROL IN TAPE DRIVES 审中-公开
标题翻译：磁带驱动器中的伺服控制
公开(公告)号：WO2009153740A2
公开(公告)日：2009-12-23
申请号：PCT/IB2009/052577
申请日：2009-06-17
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , JELITTO, Jens , LANTZ, Mark A.
发明人： CHERUBINI, Giovanni , JELITTO, Jens , LANTZ, Mark A.
IPC分类号： G11B15/00
CPC分类号： G11B5/58 , G11B5/596 , G11B15/093 , G11B15/43
摘要： Servo control methods and apparatus are provided for a tape drive (1) where a read/write head (2) reads and writes data on magnetic tape (3) with at least one servo track for providing transversal position information. At least two servo readers (S) are associated with the read/write head (2), each arranged for reading a said servo track during read/write operations. The servo readers (S) are operative concurrently to generate respective servo read signals (r). A position estimator (8) processes each servo read signal (r) to generate a series of position values, corresponding to respective time instants, indicative of transversal position of the associated servo reader (S). A servo controller (10) calculates from the position values and time instants a skew value (θ), indicative of tape skew relative to the read/write head (2), and a tension variation value (AT) indicative of variation of tape tension from a reference value. The servo controller (10) is adapted to account for cross-coupling between tape skew and tension variation in the joint calculation of the skew and tension variation values. Where three servo readers (S) are operative concurrently, the servo controller (10) can be adapted to account for time dependency of tape skew and tension variation and to calculate respective time derivatives (θ\ AT') for the skew and tension variation values (θ, AT). The calculated values can then be used to make compensatory adjustments to tape tension and tape skew relative to the read/write head (2).
摘要翻译：为磁带驱动器（1）提供伺服控制方法和装置，其中读/写磁头（2）用至少一个用于提供横向位置信息的伺服磁道读取和写入磁带（3）上的数据。至少两个伺服读取器（S）与读/写头（2）相关联，每个伺服读取器（S）被布置用于在读/写操作期间读取所述伺服轨道。伺服读取器（S）同时工作以产生相应的伺服读取信号（r）。位置估计器（8）处理每个伺服读取信号（r）以产生指示相关伺服读取器（S）的横向位置的对应于各个时刻的一系列位置值。伺服控制器（10）根据位置值和时刻计算指示相对于读/写头（2）的磁带偏斜的偏斜值（θ）和指示磁带张力变化的张力变化值（AT）从参考值。伺服控制器（10）适于考虑歪斜和张力变化值的联合计算中的带偏斜和张力变化之间的交叉耦合。在三个伺服读取器（S）同时操作的情况下，伺服控制器（10）可以适应于考虑到磁带歪斜和张力变化的时间依赖性，并且计算歪斜和张力变化值的相应时间导数（Δ\ AT'）（？，在）。然后，计算的值可用于对磁带张力和相对于读/写磁头（2）的磁带歪斜进行补偿性调整。

4. 发明申请

WO2008059406A1 OVERSAMPLED CHANNEL RESPONSE IDENTIFICATION 审中-公开
标题翻译：超声波通道响应识别
公开(公告)号：WO2008059406A1
公开(公告)日：2008-05-22
申请号：PCT/IB2007/054535
申请日：2007-11-08
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos, S. , HUTCHINS, Robert, Allen , JAQUETTE, Glen, Alan , OELCER, Sedat
发明人： CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos, S. , HUTCHINS, Robert, Allen , JAQUETTE, Glen, Alan , OELCER, Sedat
IPC分类号： G11B20/10 , H04L25/03
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10212 , H04B1/7085 , H04J2013/0037 , H04L25/0212 , H04L25/03038
摘要： Methods, apparatus and computer programs are provided for multiplication-free identification of the impulse response of an oversampled data channel (3). An input ( a ) comprising a pseudo-random binary sequence of L symbols is supplied to the channel (3) at a symbol rate of 1/T. A channel output ( z ) is produced by sampling a channel output signal corresponding to the input (a) with a sampling interval T s = (q/p)T, where q and p are relative prime integers with q P(j)) are produced from the channel output ( z ) by selecting, for each polyphase sequence ( P(j)) , every p th sample of the channel output ( z ), with a phase shift of one sample between successive polyphase sequences ( p(j) ). A decimated binary sequence ( b ) is produced by selecting every q th symbol of the channel input ( a ). Each polyphase sequence ( p(j) ) is correlated with the decimated binary sequence ( b ), the two possible binary values being of equal magnitude and opposite sign for the correlation. The correlation results are accumulated to produce a correlated output sequence ( c(j) ) for that polyphase sequence (p(j) ). The samples of the correlated output sequences ( c(j) ) are then interleaved in phase order of the corresponding polyphase sequences ( p(j) ) to produce the impulse response of the channel.
摘要翻译：提供了方法，装置和计算机程序，用于对过采样数据信道（3）的脉冲响应进行无乘法识别。包含L个符号的伪随机二进制序列的输入（a）以符号率1 / T提供给信道（3）。通过以采样间隔T（t / p）T对与输入（a）相对应的通道输出信号进行采样来产生通道输出（z），其中q和p是相对第一整数对于q 个符号来产生抽取的二进制序列（b）。每个多相序列（p（j））与抽取的二进制序列（b）相关，两个可能的二进制值相等，相关的符号相反。累积相关结果以产生该多相序列（p（j））的相关输出序列（c（j））。然后，相关输出序列（c（j））的样本以对应的多相序列（p（j））的相位顺序进行交织，以产生信道的脉冲响应。

5. 发明申请

WO2003021592A2 DATA DETECTION FOR LOCAL PROBE DATA STORAGE DEVICES 审中-公开
标题翻译：本地探测数据存储设备的数据检测
公开(公告)号：WO2003021592A2
公开(公告)日：2003-03-13
申请号：PCT/IB2002/002828
申请日：2002-07-19
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , BÄCHTOLD, Peter , BINNIG, Gerd, K. , CHERUBINI, Giovanni , DHOLAKIA, Ajay , DÜRIG, Urs, T. , ELEFTHERIOU, Evangelos, S. , LOELIGER, Theodor, W. , VETTIGER, Peter
发明人： BÄCHTOLD, Peter , BINNIG, Gerd, K. , CHERUBINI, Giovanni , DHOLAKIA, Ajay , DÜRIG, Urs, T. , ELEFTHERIOU, Evangelos, S. , LOELIGER, Theodor, W. , VETTIGER, Peter
IPC分类号： G11B9/14
CPC分类号： B82Y10/00 , G11B9/04 , G11B9/14 , G11B20/18 , G11B2005/0021
摘要： Apparatus for detecting data in a sensor signal generated by a read sensor in a local probe data storage device comprises a differentiation for subtracting a value of the sensor signal from the succeeding value of the sensor signal to generate a ternary difference signal ; and a convertor connected to the differentiator for converting the difference signal into a binary output signal indicative of the detected data. A local probe data storage device comprising such apparatus is also described.
摘要翻译：用于检测由本地探头数据存储装置中的读取传感器产生的传感器信号中的数据的装置包括从传感器信号的后续值减去传感器信号的值以产生三进制差分信号的区别; 以及连接到微分器的转换器，用于将差分信号转换成指示检测到的数据的二进制输出信号。还描述了包括这种装置的本地探测数据存储装置。

6. 发明申请

WO2003021592A3 DATA DETECTION FOR LOCAL PROBE DATA STORAGE DEVICES 审中-公开
公开(公告)号：WO2003021592A3
公开(公告)日：2003-03-13
申请号：PCT/IB2002/002828
申请日：2002-07-19
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , BÄCHTOLD, Peter , BINNIG, Gerd, K. , CHERUBINI, Giovanni , DHOLAKIA, Ajay , DÜRIG, Urs, T. , ELEFTHERIOU, Evangelos, S. , LOELIGER, Theodor, W. , VETTIGER, Peter
发明人： BÄCHTOLD, Peter , BINNIG, Gerd, K. , CHERUBINI, Giovanni , DHOLAKIA, Ajay , DÜRIG, Urs, T. , ELEFTHERIOU, Evangelos, S. , LOELIGER, Theodor, W. , VETTIGER, Peter
IPC分类号： G11B9/14
摘要： Apparatus for detecting data in a sensor signal generated by a read sensor (10) in a local probe data storage device comprises a differentiation (110) for subtracting a value of the sensor signal from the succeeding value of the sensor signal to generate a ternary difference signal ; and a convertor (120) connected to the differentiator for converting the difference signal into a binary output signal indicative of the detected data. A local probe data storage device comprising such apparatus is also described.

7. 发明申请

WO2011077340A1 METHOD AND APPARATUS FOR OPERATING A STORAGE DEVICE 审中-公开
标题翻译：用于操作存储设备的方法和装置
公开(公告)号：WO2011077340A1
公开(公告)日：2011-06-30
申请号：PCT/IB2010/055909
申请日：2010-12-17
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , JELITTO, Jens , PANTAZI, Angeliki
发明人： CHERUBINI, Giovanni , JELITTO, Jens , PANTAZI, Angeliki
IPC分类号： G11B5/56
CPC分类号： G11B5/56
摘要： Method for operating a storage device with a tape (TP) and a head (HU) which is operable to read and/or write data from and respectively to the tape (TP). The tape (TP) is moveable in a predetermined longitudinal direction (X). At least two consecutive current lateral tape positions (y x (t1), y x (t 2 )) of the tape (TP) with respect to a predetermined reference point (REF) are determined at a predetermined longitudinal capture position. A tape skew ( θ ) of the tape (TP) is determined dependent on the at least two determined lateral positions (y x (t1), y x (t 2 )). The tape skew ( θ ) represents an angle between a current tape motion direction (TMD) of the tape (TP) and the longitudinal direction (X). A skew control signal ( U ∂ ) is determined dependent on the determined tape skew ( θ ). A rotational head position ( ∂) of the head (HU) is controlled dependent on the skew control signal ( U ∂ ) to align the head (HU) to the current tape motion direction (TMD) in such a way that the head (HU) is operable to read and/or write data.
摘要翻译：用于使用可操作以从磁带（TP）读取和/或写入数据的磁带（TP）和磁头（HE）来操作存储设备的方法。带（TP）可在预定的纵向方向（X）上移动。在预定的纵向捕获位置确定带（TP）相对于预定参考点（REF）的至少两个连续的当前横向带位置（yx（t1），yx（t2））。取决于至少两个确定的横向位置（yx（t1），yx（t2））来确定带（TP）的带偏移（α）。带偏移（λ）表示带（TP）的当前带移动方向（TMD）与纵向方向（X）之间的角度。取决于确定的磁带倾斜（θ）来确定偏斜控制信号（U'）。头部（HU）的旋转头位置（θ）根据偏斜控制信号（U0）来控制，以使头部（HU）与当前带子运动方向（TMD）对准，使头部（HU））可用于读取和/或写入数据。

8. 发明申请

WO2013046067A1 SERVO CONTROL 审中-公开
标题翻译：伺服控制
公开(公告)号：WO2013046067A1
公开(公告)日：2013-04-04
申请号：PCT/IB2012/053392
申请日：2012-07-04
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , JELITTO, Jens , LANTZ, Mark, Alfred
发明人： CHERUBINI, Giovanni , JELITTO, Jens , LANTZ, Mark, Alfred
IPC分类号： G11B5/584
CPC分类号： G11B5/588 , G11B5/008 , G11B5/00847 , G11B5/4893 , G11B5/584
摘要： In a method for operating a tape storage system, while a tape (1) is being moved in a tape drive across a tape head (2) for one or more of reading and writing user data from/to a data track of the tape (1), a read element (R1) of the tape head (2), which read element (R1) is assigned to the data track, is moved transverse to a moving direction (MD) of the tape (1) for a distance of more than a width (w) of the data track. A transverse position (TP) of one or more of the following elements is subject to a signal supplied by the read element (R1) during its transverse move: The read element (R1); another read element (R1) assigned to the data track; and a write element (W1) assigned to the data track.
摘要翻译：在一种用于操作磁带存储系统的方法中，当磁带（1）在磁带驱动器中跨越磁带头（2）移动，用于从/从磁带的数据轨道读取和写入用户数据的一个或多个如图1所示，将读取元件（R1）分配给数据轨道的磁带头（2）的读取元件（R1）横向于磁带（1）的移动方向（MD）移动一定距离超过数据轨道的宽度（w）。一个或多个以下元件的横向位置（TP）在其横向移动期间经受由读取元件（R1）提供的信号：读取元件（R1）; 分配给数据轨道的另一个读取元素（R1）以及分配给数据轨道的写入元件（W1）。

9. 发明申请

WO2011107358A1 METHOD USING ALTERNATIVE TIMING INTERVALS IN A SERVO BAND 审中-公开
标题翻译：在伺服带中使用替代时序间隔的方法
公开(公告)号：WO2011107358A1
公开(公告)日：2011-09-09
申请号：PCT/EP2011/052433
申请日：2011-02-18
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , HANCOCK, Reed, Alan , BUI, Nhan, Xuan , JELITTO, Jens , CHERUBINI, Giovanni , TSURUTA, Kazuhiro
发明人： HANCOCK, Reed, Alan , BUI, Nhan, Xuan , JELITTO, Jens , CHERUBINI, Giovanni , TSURUTA, Kazuhiro
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： An alternative time interval is taken of a timing based servo band to determine lateral position of a servo read head. The servo band is arranged in a sequence bursts with non- parallel servo stripes in sequentially adjacent sub-frames of a linear tape. The timing intervals comprise at least a first time interval (A) between a first pair of non-parallel servo stripes of a sub-frame; and an alternative time interval (C) between a pair of non-parallel servo stripes intermediate the first time intervals (A), the alternative interval servo stripes of sequentially adjacent sub-frames comprising a second servo stripe of the first pair, and a first servo stripe of a sequentially succeeding first pair. Position signals are ratios involving the first and second time intervals.
摘要翻译：采用基于定时的伺服频带的替代时间间隔来确定伺服读取头的横向位置。在线性带的顺序相邻的子帧中，伺服带以非平行的伺服条以序列突发排列。定时间隔包括子帧的第一对非平行伺服条带之间的至少第一时间间隔（A）; 以及在第一时间间隔（A）之间的一对非平行伺服条之间的替代时间间隔（C），包括第一对的第二伺服条的顺序相邻子帧的替代间隔伺服条，以及第一对顺序后续的第一对的伺服条纹。位置信号是涉及第一和第二时间间隔的比率。

10. 发明申请

WO2011003677A1 CONTROL METHOD AND APPARATUS FOR A DUAL-CHANNEL WEIGHTED LPOS COMBINING SCHEME 审中-公开
标题翻译：双通道加权LPOS组合方案的控制方法和装置
公开(公告)号：WO2011003677A1
公开(公告)日：2011-01-13
申请号：PCT/EP2010/057678
申请日：2010-06-02
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , JELITTO, Jens , CHERUBINI, Giovanni , HUTCHINS, Robert, Allen , SANDBERG, Melanie, Jean
发明人： JELITTO, Jens , CHERUBINI, Giovanni , HUTCHINS, Robert, Allen , SANDBERG, Melanie, Jean
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/29
摘要： A method for monitoring a plurality of servo channels, providing a finite state machine ("FSM") comprising a single servo channel mode and a combined servo channel mode, and moving a sequential information storage medium comprising a plurality of servo bands across a read/write head comprising a corresponding plurality of servo sensors. The method further asserts an acquisition flag by a servo channel if that servo channel is tracking a servo pattern, and asserts a bit flag by a servo channel if a new LPOS bit is decoded. If at least one acquisition flag is asserted, the method determines if a bit flag is asserted by a servo channel associated with said asserted acquisition flag, and if an acquisition flag and a bit flag are asserted by a servo channel, the method determines a relative positioning of each servo sensor with respect to an associated servo pattern.
摘要翻译：一种用于监视多个伺服信道的方法，提供包括单个伺服信道模式和组合伺服信道模式的有限状态机（“FSM”），并且将包括多个伺服带的顺序信息存储介质跨越读/ 写头包括相应的多个伺服传感器。如果该伺服信道正在跟踪伺服模式，则该方法还通过伺服信道断言采集标志，并且如果新的LPOS位被解码，则通过伺服信道断言位标志。如果至少一个采集标志被断言，则该方法确定是否通过与所述断言采集标志相关联的伺服信道确定位标志，并且如果通过伺服信道确定获取标志和位标志，则该方法确定相对每个伺服传感器相对于相关伺服模式的定位。

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