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1. 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。

2. 发明申请

WO2007088139A1 USING AT LEAST ONE SERVO CHANNEL TO PROVIDE TIMING RECOVERY AND TIMING INFORMATION TO DATA CHANNELS 审中-公开
标题翻译：使用至少一个服务器通道来为数据通道提供时序恢复和时序信息
公开(公告)号：WO2007088139A1
公开(公告)日：2007-08-09
申请号：PCT/EP2007/050772
申请日：2007-01-26
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , BUI, Nhan, Xuan , CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , JAQUETTE, Glen, Alan , JELITTO, Jens , OELCER, Sedat , TAYLOR, Mark, Allan
发明人： BUI, Nhan, Xuan , CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , JAQUETTE, Glen, Alan , JELITTO, Jens , OELCER, Sedat , TAYLOR, Mark, Allan
IPC分类号： G11B27/10 , G11B20/10
CPC分类号： G11B27/36 , G11B20/10037 , G11B20/10046 , G11B20/10055 , G11B20/10212 , G11B20/10259 , G11B20/1403 , G11B20/1876 , G11B27/10 , G11B2020/10592 , G11B2220/90 , G11B2220/95
摘要： Provided is a read channel, storage drive, and method to process signals read from a storage medium. At least one data channel including an interpolator and equalizer and a servo channel includes an interpolator. A timing recovery function processes a timing error from the interpolator in the servo channel to calculate interpolation timing information used by the interpolator to interpolate a servo channel signal. A path is coupled to the timing recovery function and the interpolator in the at least one data channel to communicate the interpolation timing information to the interpolator in the at least one data channel. The interpolator in the at least one data channel is configured to use the interpolation timing information to interpolate an asynchronous data channel signal.
摘要翻译：提供了一种用于处理从存储介质读取的信号的读通道，存储驱动器和方法。包括内插器和均衡器和伺服信道的至少一个数据信道包括内插器。定时恢复功能处理来自伺服信道中的内插器的定时误差，以计算内插器使用的内插定时信息来内插伺服信道信号。路径耦合到至少一个数据信道中的定时恢复功能和内插器，以将内插定时信息传送到至少一个数据信道中的内插器。至少一个数据信道中的内插器被配置为使用内插定时信息内插异步数据信道信号。

3. 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）。

4. 发明申请

WO2007051693A2 ADAPTIVE ASYNCHRONOUS EQUALIZATION USING LEAKAGE 审中-公开
标题翻译：使用漏洞自适应异步平衡
公开(公告)号：WO2007051693A2
公开(公告)日：2007-05-10
申请号：PCT/EP2006/067340
申请日：2006-10-12
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , HUTCHINS, Robert, Allen , ELEFTHERIOU, Evangelos , OELCER, Sedat , JELITTO, Jens
发明人： HUTCHINS, Robert, Allen , ELEFTHERIOU, Evangelos , OELCER, Sedat , JELITTO, Jens
IPC分类号： G11B20/10 , H04L25/03 , H03H21/00
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10175 , G11B20/10481 , H04L25/03019 , H04L2025/03484 , H04L2025/03681
摘要： An apparatus, system, and method are disclosed for adaptive asynchronous equalization using leakage. An equalizer sums products of a plurality of tap signals from a delay line sampling a read signal and a plurality of corresponding tap coefficients to form an equalized signal in an asynchronous time domain having a first sampling rate. A leaky function module calculates a leaky function for each tap coefficient in the asynchronous time domain. An adaptation module adapts each of the tap coefficients as the leaky function for each tap coefficient summed with a signal-dependent updating function for each tap coefficient.
摘要翻译：公开了一种使用泄漏的自适应异步均衡的装置，系统和方法。均衡器对来自采样读取信号的延迟线和多个相应抽头系数的多个抽头信号的乘积求和，以在具有第一采样率的异步时域中形成均衡信号。漏泄功能模块为异步时域中的每个抽头系数计算泄漏函数。适配模块将每个抽头系数适配为用于每个抽头系数的泄漏函数，并与每个抽头系数的依赖于信号的更新函数相加。

5. 发明申请

WO2011120837A1 DATA-DEPENDENT NOISE-PREDICTIVE MAXIMUM LIKELIHOOD DETECTION FOR MAGNETIC RECORDING 审中-公开
标题翻译：数据依赖性噪声预测最大似然检测用于磁记录
公开(公告)号：WO2011120837A1
公开(公告)日：2011-10-06
申请号：PCT/EP2011/054305
申请日：2011-03-22
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , HUTCHINS, Robert, Allen , OELCER, Sedat , ELEFTHERIOU, Evangelos , BLINICK, Katherine, Tyldesley
发明人： HUTCHINS, Robert, Allen , OELCER, Sedat , ELEFTHERIOU, Evangelos , BLINICK, Katherine, Tyldesley
IPC分类号： G11B20/10 , H03M13/39
CPC分类号： G11B20/10009 , G11B20/10046 , G11B20/10074 , G11B20/10175 , G11B20/10287 , G11B2220/90
摘要： A method for data detection in magnetic storage system data channels includes applying one or more whitening filters to an input stream of digitized samples from a magnetic data channel to produce a filtered sequence, performing one or more branch metric calculations to the filtered sequence to produce a branch metric, and applying a multi-state data-dependent noise-predictive maximum likelihood (DD-NPML) detector to the branch metric to produce an output stream. In another embodiment, a multi-channel data storage system includes a head for reading data from a storage medium, logic for applying one or more whitening filters to an input stream of digitized samples from a magnetic data channel to produce a filtered sequence, logic for performing one or more branch metric calculations to the filtered sequence to produce a branch metric, and logic for applying a multi-state DD-NPML detector to the branch metric to produce an output stream.
摘要翻译：一种用于磁存储系统数据通道中的数据检测的方法包括：将一个或多个白化滤波器应用于来自磁数据信道的数字化样本的输入流，以产生经滤波的序列，对滤波后的序列执行一个或多个分支度量计算，以产生分支度量，以及将多状态数据相关噪声预测最大似然（DD-NPML）检测器应用于分支度量以产生输出流。在另一个实施例中，多通道数据存储系统包括用于从存储介质读取数据的头，用于将一个或多个白化滤波器应用于来自磁数据通道的数字化采样的输入流以产生滤波序列的逻辑，用于对经滤波的序列执行一个或多个分支度量计算以产生分支度量，以及将多状态DD-NPML检测器应用于分支度量以产生输出流的逻辑。

6. 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。

7. 发明申请

WO2011104050A3 SYNCHRONIZATION OF SYMMETRIC TIMING BASED SERVO BURSTS 审中-公开
标题翻译：基于对称时序的伺服冲突的同步
公开(公告)号：WO2011104050A3
公开(公告)日：2011-09-01
申请号：PCT/EP2011/050674
申请日：2011-01-19
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , CHERUBINI, Giovanni , JELITTO, Jens , LANTZ, Mark, Alfred , HUTCHINS, Robert, Allen
发明人： CHERUBINI, Giovanni , JELITTO, Jens , LANTZ, Mark, Alfred , HUTCHINS, Robert, Allen
IPC分类号： G11B5/584
摘要： Timing based servo bursts of servo frames, in which the frames are arranged to be symmetric with the same number of servo stripes in each burst of a frame, are synchronized by shifting selected bits. For example, servo frames are arranged with four servo bursts with an equal number of servo stripes in each burst, the servo frames comprising two symmetric sub-frames, each sub-frame comprising two bursts of servo stripes that are parallel to each other within a burst, and the bursts are non-parallel with respect to each other; each servo burst is arranged to comprise at least one reference servo stripe; and each servo burst is arranged to comprise at least one shifted servo stripe, wherein the shift is in the same longitudinal direction with respect to at least one reference servo stripe for each burst of a frame and the opposite longitudinal direction for bursts of sequentially adjacent frames.
摘要翻译：基于时间的伺服帧的伺服脉冲串通过移动选择的位而同步，其中帧被布置为在帧的每个脉冲串中具有相同数量的伺服条带对称。例如，伺服帧被安排为具有在每个脉冲串中具有相同数量的伺服条纹的四个伺服脉冲串，伺服帧包括两个对称子帧，每个子帧包括两个伺服条纹脉冲串，这两个伺服条纹脉冲彼此平行爆发，并且爆发相互之间不平行; 每个伺服脉冲串被安排成包括至少一个参考伺服条带; 并且每个伺服脉冲串被布置为包括至少一个移位的伺服条带，其中，对于帧的每个脉冲串，相对于至少一个参考伺服条带，以及对于顺序相邻帧的脉冲串的相反纵向方向，移位在相同的纵向方向上

8. 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。

9. 发明申请

WO2009115386A1 ERROR CORRECTION CODING OF LONGITUDINAL POSITION INFORMATION 审中-公开
标题翻译：长期位置信息的错误校正编码
公开(公告)号：WO2009115386A1
公开(公告)日：2009-09-24
申请号：PCT/EP2009/051894
申请日：2009-02-18
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , CIDECIYAN, Roy, Daron , CHERUBINI, Giovanni
发明人： ELEFTHERIOU, Evangelos , HUTCHINS, Robert, Allen , CIDECIYAN, Roy, Daron , CHERUBINI, Giovanni
IPC分类号： G11B20/12 , G11B20/18 , G11B5/584 , G11B15/46 , H03M13/09
CPC分类号： G11B20/1201 , G11B5/584 , G11B20/14 , G11B20/1833 , G11B20/1866 , G11B2020/1281 , G11B2020/1284 , G11B2020/1287 , G11B2020/1484 , G11B2020/1836 , G11B2220/90 , G11B2220/93 , G11B2220/95
摘要： A sequential data storage medium, comprising a sequence of plurality of servo patterns that provide lateral position information and longitudinal position information, wherein each of the plurality of servo patterns comprises a first burst comprising a first plurality of pulses, a second burst comprising a second plurality of pulses, a third burst comprising a third plurality of pulses, and a fourth burst comprising a fourth plurality of pulses. The spacings between the first plurality of pulses, in combination with the spacings between the second plurality of pulses, encode a first bit without affecting the recovery of lateral position information. The spacings between the third plurality of pulses, in combination with the spacings between the fourth plurality of pulses, encode a second bit without affecting the recovery of lateral position information. The sequence of plurality of servo patterns comprises a sequence of the first bits and a sequence of the second bits to form an error-correction codeword providing error-correction capability.
摘要翻译：一种顺序数据存储介质，包括提供横向位置信息和纵向位置信息的多个伺服模式的序列，其中所述多个伺服模式中的每一个包括包括第一多个脉冲的第一脉冲串，包括第二多个脉冲的第二脉冲串的脉冲，包括第三多个脉冲的第三脉冲串，以及包括第四多个脉冲的第四脉冲串。所述第一多个脉冲之间的间隔与所述第二多个脉冲之间的间隔相结合，对第一位进行编码，而不影响横向位置信息的恢复。第三多个脉冲之间的间隔与第四多个脉冲之间的间隔结合，对第二位进行编码，而不影响横向位置信息的恢复。多个伺服模式的序列包括第一比特的序列和第二比特的序列，以形成提供纠错能力的纠错码字。

10. 发明申请

WO2011023639A1 METHOD TO MINIMIZE THE EFFECTS OF TAPE SKEW AND TAPE DIMENSIONAL STABILITY 审中-公开
标题翻译：最小化带状和带状尺寸稳定性的影响的方法
公开(公告)号：WO2011023639A1
公开(公告)日：2011-03-03
申请号：PCT/EP2010/062181
申请日：2010-08-20
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , HUTCHINS, Robert, Allen , KOEPPE, Peter, VanderSalm , TEALE, Johnny, Lynn , HARPER, David, Howard
发明人： HUTCHINS, Robert, Allen , KOEPPE, Peter, VanderSalm , TEALE, Johnny, Lynn , HARPER, David, Howard
IPC分类号： G11B5/00 , G11B27/00 , G11B5/02 , G11B5/58
CPC分类号： G11B27/00 , G11B5/00826 , G11B5/3977 , G11B5/584
摘要： A method, system and computer-usable medium are disclosed for performing data write and data read operations on a tape storage medium. A dual head/tape actuator assembly, comprising two head/tape actuator assemblies, is implemented to perform data write and data read operations on a tape medium. Each of the head/tape actuator assemblies comprises a set of data writer elements and a set of data reader elements. During data write operations, the data writer elements on one head/tape actuator assembly are used to write data to a tape medium and the data reader elements on the other head/tape actuator assembly are used to read the data from the tape medium. During read operations, half of the data readers on one head/tape actuator assembly are used to read data from half of the written data tracks on the tape medium and half of the data readers on the other head/tape actuator assembly are used to read the other half of the written tracks.
摘要翻译：公开了用于在磁带存储介质上执行数据写入和数据读取操作的方法，系统和计算机可用介质。实现了包括两个头/磁带致动器组件的双头/磁带致动器组件，以在磁带介质上执行数据写入和数据读取操作。头/带致动器组件中的每一个包括一组数据写入器元件和一组数据读取器元件。在数据写入操作期间，一个头/磁带致动器组件上的数据写入器元件用于将数据写入磁带介质，并且另一磁头/磁带致动器组件上的数据读取器元件用于从磁带介质读取数据。在读取操作期间，一个磁头/磁带驱动器组件上的一半数据读取器用于从磁带介质上的一半写入的数据磁道读取数据，另一个磁头/磁带执行器组件上的一半数据读取器用于读取另一半的书面轨道。

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