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1. 发明授权

US07245450B1 Synchronous servo channel for longitudinal position detection and position error signal generation in tape drive systems 有权
标题翻译：用于纵向位置检测的同步伺服通道和磁带机系统中的位置误差信号产生
公开(公告)号：US07245450B1
公开(公告)日：2007-07-17
申请号：US11340030
申请日：2006-01-26
申请人： Giovanni Cherubini , Evangelos S. Eleftheriou , Robert A. Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Evangelos S. Eleftheriou , Robert A. Hutchins , Jens Jelitto
IPC分类号： G11B15/52
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号信号的分辨率。

2. 发明申请

US20080151416A1 SYNCHRONOUS SERVO CHANNEL FOR TAPE DRIVE SYSTEMS 有权
公开(公告)号：US20080151416A1
公开(公告)日：2008-06-26
申请号：US12044950
申请日：2008-03-08
申请人： Giovanni Cherubini , Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/584
CPC分类号： G11B5/59688
摘要： A fully synchronous servo channel for a data tape drive is provided which includes the initial acquisition of synchronous servo channel parameters, generation of a timing basis for signal interpolation, generation of a tape velocity estimate and a y-position estimate and an optimum detection of longitudinal position (LPOS) symbols embedded in servo bursts.

3. 发明授权

US07864487B2 Head design for writing servo patterns on magnetic tape 有权
标题翻译：在磁带上写入伺服模式的头设计
公开(公告)号：US07864487B2
公开(公告)日：2011-01-04
申请号：US12118251
申请日：2008-05-09
申请人： Giovanni Cherubini , Roy D. Cideciyan , Evangelos S. Eleftheriou , Jens Jelitto , Mark A. Lantz
发明人： Giovanni Cherubini , Roy D. Cideciyan , Evangelos S. Eleftheriou , Jens Jelitto , Mark A. Lantz
IPC分类号： G11B5/584 , G11B5/265
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. 发明授权

US07742254B2 Servo channel for tape drive systems 有权
标题翻译：磁带驱动系统的伺服通道
公开(公告)号：US07742254B2
公开(公告)日：2010-06-22
申请号：US11969184
申请日：2008-01-03
申请人： Giovanni Cherubini , Roy Daron Cideciyan , Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Roy Daron Cideciyan , Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Provided are techniques for synchronous servo channel for a data tape drive. A servo reader is configured to read servo bursts from a data tape. An anti-aliasing filter is operable to output a bandlimited signal and is coupled to receive a servo channel signal comprising servo bursts from the servo reader. An analog-to-digital converter (ADC) is operable to output signal samples and is coupled to receive the bandlimited signal from the anti-aliasing filter. An interpolation and control unit is operable to output interpolated signal samples and control signals, has a first input coupled to receive the signal samples from the ADC, and has a second input coupled to receive the correlation signal samples from the dibit correlator. A dibit correlator is operable to output correlation signal samples and is coupled to receive the interpolated signal samples and control signals from the interpolation and control unit.
摘要翻译：提供了用于数据磁带驱动器的同步伺服通道的技术。伺服读取器被配置为从数据磁带读取伺服脉冲串。抗混叠滤波器可操作以输出带限信号，并且耦合以接收包括来自伺服读取器的伺服脉冲串的伺服信道信号。模数转换器（ADC）可操作以输出信号采样并被耦合以从抗混叠滤波器接收带限信号。内插和控制单元可操作以输出内插信号样本和控制信号，具有耦合以从ADC接收信号样本的第一输入，并具有耦合以从双位相关器接收相关信号样本的第二输入。双向相关器可操作以输出相关信号样本，并被耦合以从内插和控制单元接收内插的信号样本和控制信号。

5. 发明申请

US20090279202A1 HEAD DESIGN FOR WRITING SERVO PATTERNS ON MAGNETIC TAPE 有权
标题翻译：用于在磁带上书写伺服模式的头设计
公开(公告)号：US20090279202A1
公开(公告)日：2009-11-12
申请号：US12118251
申请日：2008-05-09
申请人： Giovanni Cherubini , Roy D. Cideciyan , Evangelos S. Eleftheriou , Jens Jelitto , Mark A. Lantz
发明人： Giovanni Cherubini , Roy D. Cideciyan , Evangelos S. Eleftheriou , Jens Jelitto , Mark A. Lantz
IPC分类号： G11B5/584
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。

6. 发明申请

US20090316773A1 WORD SYNCHRONIZATION FOR SERVO READ SIGNALS IN TAPE DRIVES 有权
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：US20090316773A1
公开(公告)日：2009-12-24
申请号：US12487050
申请日：2009-06-18
申请人： Roy Daron Cideciyan , Giovanni Cherubini , Evangelos S. Eleftheriou , Jens Jelitto
发明人： Roy Daron Cideciyan , Giovanni Cherubini , Evangelos S. Eleftheriou , Jens Jelitto
IPC分类号： H03K9/04
CPC分类号： G11B5/584
摘要： Methods and apparatus for detecting L-bit sync words occurring at N-bit intervals in PPM-encoded servo pattern read signals read in magnetic tape drives. A soft output detector 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 then produces block correlation values for respective positions of a sliding L-sample block in the series of soft output samples by (i) calculating at each block position bit correlation values indicating correlation between respective samples and corresponding bits of the sync word and (ii) summing each bit correlation value minus a predetermined function of the corresponding sample value. The sync word detector then detects a sync word at the block position with the maximum block correlation value in an (N+L−1)-sample sequence of the series of soft output samples.
摘要翻译：用于检测在磁带驱动器中读取的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。软输出检测器处理PPM编码的伺服模式读取信号以产生与伺服模式中编码的各个位对应的一系列软输出样本。同步字检测器然后通过以下步骤产生一系列软输出样本中的滑动L样本块的相应位置的块相关值：（i）在每个块位置计算指示相应采样和同步字的相应位之间的相关性的位相关值和（ii）将每个比特相关值减去减去对应样本值的预定函数。同步字检测器随后在软输出样本序列的（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。

7. 发明授权

US07433142B2 Using at least one servo channel to provide timing recovery and timing information to data channels 失效
标题翻译：使用至少一个伺服通道来向数据通道提供定时恢复和定时信息
公开(公告)号：US07433142B2
公开(公告)日：2008-10-07
申请号：US11346391
申请日：2006-02-01
申请人： Nhan Xuan Bui , Giovanni Cherubini , Evangelos S. Eleftheriou , Robert Allen Hutchins , Glen Alan Jaquette , Jens Jelitto , Sedat Oelcer , Mark A. Taylor
发明人： Nhan Xuan Bui , Giovanni Cherubini , Evangelos S. Eleftheriou , Robert Allen Hutchins , Glen Alan Jaquette , Jens Jelitto , Sedat Oelcer , Mark A. Taylor
IPC分类号： G11B5/09
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。所述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来内插异步数据信道信号。

8. 发明申请

US20090174964A1 SERVO CHANNEL FOR TAPE DRIVE SYSTEMS 有权
标题翻译：用于磁带驱动系统的伺服通道
公开(公告)号：US20090174964A1
公开(公告)日：2009-07-09
申请号：US11969184
申请日：2008-01-03
申请人： Giovanni Cherubini , Roy Daron Cideciyan , Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Roy Daron Cideciyan , Evangelos S. Eleftheriou , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： Provided are techniques for synchronous servo channel for a data tape drive. A servo reader is configured to read servo bursts from a data tape. An anti-aliasing filter is operable to output a bandlimited signal and is coupled to receive a servo channel signal comprising servo bursts from the servo reader. An analog-to-digital converter (ADC) is operable to output signal samples and is coupled to receive the bandlimited signal from the anti-aliasing filter. An interpolation and control unit is operable to output interpolated signal samples and control signals, has a first input coupled to receive the signal samples from the ADC, and has a second input coupled to receive the correlation signal samples from the dibit correlator. A dibit correlator is operable to output correlation signal samples and is coupled to receive the interpolated signal samples and control signals from the interpolation and control unit.
摘要翻译：提供了用于数据磁带驱动器的同步伺服通道的技术。伺服读取器被配置为从数据磁带读取伺服脉冲串。抗混叠滤波器可操作以输出带限信号，并且耦合以接收包括来自伺服读取器的伺服脉冲串的伺服信道信号。模数转换器（ADC）可操作以输出信号采样并被耦合以从抗混叠滤波器接收带限信号。内插和控制单元可操作以输出内插信号样本和控制信号，具有耦合以从ADC接收信号样本的第一输入，并具有耦合以从双位相关器接收相关信号样本的第二输入。双向相关器可操作以输出相关信号样本，并被耦合以从内插和控制单元接收内插的信号样本和控制信号。

9. 发明授权

US08840056B2 Operating a reel-to-reel system 有权
标题翻译：操作卷对卷系统
公开(公告)号：US08840056B2
公开(公告)日：2014-09-23
申请号：US12896183
申请日：2010-10-01
申请人： Giovanni Cherubini , Evangelos S. Eleftheriou , Jens Jelitto
发明人： Giovanni Cherubini , Evangelos S. Eleftheriou , Jens Jelitto
IPC分类号： B65H23/18 , G11B15/32
CPC分类号： G11B15/32
摘要： A method for operating a reel-to-reel system of a storage device with a first reel, a second reel, a first motor and a second motor, the first motor drives the first reel and the second motor drives the second reel. The system transports a tape supplied by one of the two reels and taken up by the other reel. A tape velocity and tape tension between the first and reels, and a longitudinal displacement are determined. An estimated state vector depends on the tape velocity, tape tension and longitudinal displacement. A reference state vector depends on a predetermined reference tape velocity and a predetermined reference tape tension. A first control signal and a second control signal are generated dependent on the estimated state vector and the reference state vector. The first motor is controlled by the first control signal and the second motor is controlled by the second control signal.
摘要翻译：一种用于操作具有第一卷轴，第二卷轴，第一马达和第二马达的存储装置的卷到卷系统的方法，所述第一马达驱动所述第一卷轴，所述第二马达驱动所述第二卷轴。系统传送由两个卷轴中的一个提供的磁带并由另一个卷轴占据。确定第一和卷轴之间的带速度和带张力以及纵向位移。估计的状态矢量取决于磁带速度，磁带张力和纵向位移。参考状态向量取决于预定的参考带速度和预定的参考带张力。根据估计的状态矢量和参考状态矢量产生第一控制信号和第二控制信号。第一马达由第一控制信号控制，第二马达由第二控制信号控制。

10. 发明授权

US08027111B2 Word synchronization for servo read signals in tape drives 有权
标题翻译：磁带驱动器中伺服读取信号的字同步
公开(公告)号：US08027111B2
公开(公告)日：2011-09-27
申请号：US12487050
申请日：2009-06-18
申请人： Roy Daron Cideciyan , Giovanni Cherubini , Evangelos S. Eleftheriou , Jens Jelitto
发明人： Roy Daron Cideciyan , Giovanni Cherubini , Evangelos S. Eleftheriou , Jens Jelitto
IPC分类号： G11B20/10
CPC分类号： G11B5/584
摘要： Methods and apparatus for detecting L-bit sync words occurring at N-bit intervals in PPM-encoded servo pattern read signals read in magnetic tape drives. A soft output detector 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 then produces block correlation values for respective positions of a sliding L-sample block in the series of soft output samples by (i) calculating at each block position bit correlation values indicating correlation between respective samples and corresponding bits of the sync word and (ii) summing each bit correlation value minus a predetermined function of the corresponding sample value. The sync word detector then detects a sync word at the block position with the maximum block correlation value in an (N+L−1)-sample sequence of the series of soft output samples.
摘要翻译：用于检测在磁带驱动器中读取的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。软输出检测器处理PPM编码的伺服模式读取信号以产生与伺服模式中编码的各个位对应的一系列软输出样本。同步字检测器然后通过以下步骤产生一系列软输出样本中的滑动L样本块的相应位置的块相关值：（i）在每个块位置计算指示相应采样和同步字的相应位之间的相关性的位相关值和（ii）将每个比特相关值减去减去对应样本值的预定函数。同步字检测器随后在软输出样本序列的（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。

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