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1. 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。

2. 发明申请

WO2007085529A1 SYNCHRONOUS SERVO CHANNEL FOR LONGITUDINAL POSITION DETECTION AND POSITION ERROR SIGNAL GENERATION IN TAPE DRIVE SYSTEMS 审中-公开
标题翻译：用于纵向位置检测的同步伺服通道和带状驱动系统中的位置错误信号产生
公开(公告)号：WO2007085529A1
公开(公告)日：2007-08-02
申请号：PCT/EP2007/050212
申请日：2007-01-10
申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION , IBM UNITED KINGDOM LIMITED , CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos , JELITTO, Jens , HUTCHINS, Robert
发明人： CHERUBINI, Giovanni , ELEFTHERIOU, Evangelos , JELITTO, Jens , HUTCHINS, Robert
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A fully synchronous longitudinal position (LPOS) detection system is provided for improving the reliability of servo channels in tape systems. The system is based on the interpolation of the servo channel output signal, which is sampled by an analog-to-digital converter (ADC) at a fixed sampling rate, using a clock at a nominal frequency, so that interpolated signal samples are obtained at a predetermined fixed rate, independent of tape velocity. This predetermined fixed rate is defined in terms of samples per unit of length, as opposed to samples per unit of time, which is the measure of the ADC sampling rate. The resolution with which the servo channel signal is obtained at the interpolator output is thus determined by the step interpolation distance.
摘要翻译：提供了全同步纵向位置（LPOS）检测系统，用于提高磁带系统中伺服通道的可靠性。该系统基于使用以标称频率的时钟由固定采样率的模数转换器（ADC）采样的伺服信道输出信号的内插，从而获得内插信号样本一个预定的固定速率，与磁带速度无关。这个预定的固定速率是根据单位长度的样本来定义的，而不是每单位时间的样本，这是ADC采样率的量度。因此，通过步进插补距离来确定在内插器输出处获得伺服信道信号的分辨率。

3. 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。

4. 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。

5. 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。

6. 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。

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

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。

10. 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.

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