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1. 发明申请

WO2011092642A1 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：WO2011092642A1
公开(公告)日：2011-08-04
申请号：PCT/IB2011/050356
申请日：2011-01-27
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , ELEFTHERIOU, Evangelos S. , HAEBERLE, Walter , JELITTO, Jens , PANTAZI, Angeliki
发明人： ELEFTHERIOU, Evangelos S. , HAEBERLE, Walter , JELITTO, Jens , PANTAZI, Angeliki
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Method for operating a storage device with a tape (TP) and a head (HU) wherein the head (HU) comprises a first and a second read element (RE1, RE2). Each read element (RE1, RE2) is operable to detect servo-pattern of a particular servo band (SP). The first and the second read element (RE1, RE2) are arranged in such a way, that the tape (TP) at first passes one of both read elements (RE1, RE2) and subsequently passes the other of both read elements (RE1, RE2) when the tape (TP) moves in a predetermined longitudinal direction (X). A tape transport direction (TPDIR) of the tape (TP) along the longitudinal direction (X) is determined. The first read element (RE1) is selected dependent on the determined tape transport direction (TPDIR), when the determined tape transport direction (TPDIR) represents a direction where the tape (TP) at first passes the first read element (RE1) and subsequently the second read element (RE2). Otherwise the second read element (RE2) is selected. A position error signal (PES1) is determined dependent on the selected read element. With respect to a predetermined lateral reference point (REF) an estimated lateral track position ( d est ) at a longitudinal position (x1) of the selected read element is estimated dependent on the determined position error signal (PES1). With respect to the predetermined reference point (REF) another estimated lateral track position ( d* est ) at a longitudinal position (x2) of the non- selected read element is estimated in such a way that the other estimated lateral track position ( d* est ) becomes a time-delayed representation of the estimated lateral track position ( d est ).
摘要翻译：用于使用带（TP）和头（HU）操作存储设备的方法，其中所述头部（HU）包括第一和第二读取元件（RE1，RE2）。每个读取元件（RE1，RE2）可用于检测特定伺服带（SP）的伺服模式。第一和第二读取元件（RE1，RE2）以这样的方式排列，即带（TP）首先通过两个读取元件（RE1，RE2）中的一个，然后将两个读取元件（RE1，当胶带（TP）在预定的纵向方向（X）移动时，RE2）。确定带（TP）沿着纵向（X）的带传送方向（TPDIR）。当确定的磁带传输方向（TPDIR）表示磁带（TP）首先通过第一读取单元（RE1）并且随后的传输方向（TPDIR））时，第一读取单元（RE1）被选择，取决于确定的磁带传输方向（TPDIR）第二个读取元素（RE2）。否则选择第二个读取元素（RE2）。取决于所选择的读取元素来确定位置误差信号（PES1）。相对于预定的横向参考点（REF），所选择的读取元件的纵向位置（x1）处的估计横向轨迹位置（d est）取决于所确定的位置误差信号（PES1）来估计。对于预定的参考点（REF），以非选择的读取元件的纵向位置（x2）处的另一个估计横向轨迹位置（d * est）被估计为使得另一个估计的横向轨道位置（d * est）成为估计侧向轨道位置（d est）的时间延迟表示。

2. 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。

3. 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。

4. 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。

5. 发明申请

WO2011054570A1 CANCELLATION OF TIME-VARYING PERIODIC DISTURBANCES IN SERVO CONTROL SYSTEMS 审中-公开
标题翻译：在伺服控制系统中取消时变周期性干扰
公开(公告)号：WO2011054570A1
公开(公告)日：2011-05-12
申请号：PCT/EP2010/063345
申请日：2010-09-13
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , PANTAZI, Angeliki , ELEFTHERIOU, Evangelos , JELITTO, Jens , BUI, Nhan, Xuan
发明人： PANTAZI, Angeliki , ELEFTHERIOU, Evangelos , JELITTO, Jens , BUI, Nhan, Xuan
IPC分类号： G11B5/584 , G11B5/008
CPC分类号： G11B5/584 , G11B5/00813
摘要： Various embodiments for addressing time-varying periodic disturbances in a servo control system are provided. Each of a plurality of coefficients is updated based on an estimation of at least one disturbance frequency. The updated plurality of coefficients is provided to at least one peak filter modifying an input signal of the servo control system. The peak filter is operable in view of the updated plurality of coefficients to cancel at least 10 one of the time-varying periodic disturbances.
摘要翻译：提供了用于解决伺服控制系统中的时变周期性干扰的各种实施例。基于至少一个干扰频率的估计来更新多个系数中的每一个。更新的多个系数被提供给修改伺服控制系统的输入信号的至少一个峰值滤波器。考虑到更新的多个系数，峰值滤波器可操作以消除时变周期性干扰中的至少10个。

6. 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）。

7. 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。

8. 发明申请

WO2009047118A1 MULTI-CHANNEL DATA DETECTION 审中-公开
标题翻译：多通道数据检测
公开(公告)号：WO2009047118A1
公开(公告)日：2009-04-16
申请号：PCT/EP2008/062757
申请日：2008-09-24
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , HUTCHINS, Robert, Allen , JELITTO, Jens , OELCER, Sedat
发明人： HUTCHINS, Robert, Allen , JELITTO, Jens , OELCER, Sedat
IPC分类号： H03L7/07 , H03L7/093 , G11B20/20 , G11B20/14
CPC分类号： H03L7/0994 , G11B20/10037 , G11B20/1403 , G11B20/20 , H03L7/07 , H03L7/093
摘要： Common sample timing control for sample timing of multiple read channels, wherein the signalclocking of the signals received by the multiple read channels are correlated, for example from parallel tracks of magnetic tape that have been written simultaneously. A common sample timing control comprises multiplephase error inputs (91, 92), each indicating phase error of one of the read channels. Logic responsive to the multiple phaseerror inputs is configured to weight and crosscouple the phase error indication of each phase error input withthe phase error indication of each other phase error input, and to apply gain related to the variance of noise of the phase error indications. Feedback logic (141, 142) is responsive to the crosscoupling and is configured to provide a sample timing phase estimate (111, 112) for each read channel.
摘要翻译：用于多个读取通道的采样定时的公共采样定时控制，其中由多个读取通道接收的信号的信号频率例如与已经被同时写入的磁带的平行轨道相关联。公共采样定时控制包括多相误差输入（91,92），每个指示一个读通道的相位误差。响应于多个相位误差输入的逻辑被配置为对每个相位误差输入的相位误差指示进行加权和交叉并联，并且与相位误差指示的噪声方差相关地应用增益。反馈逻辑（141,142）响应于交叉耦合，并且被配置为为每个读取通道提供采样定时相位估计（111,112）。

9. 发明申请

WO2004004194A3 LINK ADAPTATION 审中-公开
公开(公告)号：WO2004004194A3
公开(公告)日：2004-01-08
申请号：PCT/IB2003/002784
申请日：2003-06-17
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , JELITTO, Jens , NOLL BARRETO, Andre , TRUONG, Hong, Linh
发明人： JELITTO, Jens , NOLL BARRETO, Andre , TRUONG, Hong, Linh
IPC分类号： H04L1/00
摘要： The present invention discloses an apparatus and method for adapting a transmission parameter in a transmitting node of a data communication system to the current link quality of a data communication channel. The adapted transmission parameter is selected by the transmitting node from a set of transmission parameters in dependence on a number of successful transmissions. The number of successful transmissions is compared in the transmitting node against one of a first threshold value corresponding to a first state of the transmitting node and a second threshold value corresponding to a second state of the transmitting node. The method comprises in the transmitting node the steps of (a) counting the number of successful transmissions; (b) selecting the adapted transmission parameter (bl) in response to the number of successful transmissions equaling or exceeding the first threshold value when the transmitting node is in the first state, and (b2) in response to the number of successful transmissions equaling or exceeding the second threshold value when the transmitting node is in the second state; and in dependence of the result of a following transmission, operating the transmitting node in one of the first state and the second state.

10. 发明申请

WO2007065842A1 USING A MEASURED ERROR TO DETERMINE COEFFICIENTS TO PROVIDE TO AN EQUALIZER TO USE TO EQUALIZE AN INPUT SIGNAL 审中-公开
标题翻译：使用测量错误确定系数以提供均衡器以均衡输入信号
公开(公告)号：WO2007065842A1
公开(公告)日：2007-06-14
申请号：PCT/EP2006/069110
申请日：2006-11-30
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , JELITTO, Jens , OELCER, Sedat
发明人： ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , JELITTO, Jens , OELCER, Sedat
IPC分类号： G11B20/10 , G11B5/035
CPC分类号： G11B5/09 , G11B5/00817 , G11B20/10009 , G11B20/10046
摘要： Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to equalize input read signals to produce equalizer output signals. A detector processes adjusted equalizer output signals to determine output values comprising data represented by the input read signals. An equalizer adaptor is enabled to provide a reference measured error and coefficients used to produce the adjusted equalizer signals that are associated with the reference measured error. The equalizer adaptor computes new equalizer coefficients to use to equalize input read signals that result in a new measured error from the detector and computes a new measured error for the new equalizer coefficients.
摘要翻译：提供了读通道，存储驱动器和使用测量误差的方法来确定提供给均衡器的系数以用于均衡输入信号。读取通道并入存储装置中以处理从存储介质读取的信号。均衡器使用系数来均衡输入读取信号以产生均衡器输出信号。检测器处理经调整的均衡器输出信号以确定包括由输入读信号表示的数据的输出值。启用均衡器适配器以提供参考测量误差和用于产生与参考测量误差相关联的经调整的均衡器信号的系数。均衡器适配器计算新的均衡器系数以用于均衡来自检测器的导致新的测量误差的输入读取信号，并且计算新的均衡器系数的新的测量误差。

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