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1. 发明授权

US08331055B2 Control method and apparatus for a dual-channel weighted LPOS combining scheme 有权
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：US08331055B2
公开(公告)日：2012-12-11
申请号：US12500490
申请日：2009-07-09
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Melanie Jean Sandberg
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Melanie Jean Sandberg
IPC分类号： G11B21/02
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），以及跨越读/写头移动包括多个伺服带的顺序信息存储介质包括相应的多个伺服传感器。如果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，如果解码了新的LPOS位，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，则该方法确定与所述断言获取标志相关联的伺服信道是否标志位标志，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。

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

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。

4. 发明申请

US20120014010A1 DETERMINING A REFERENCE WAVEFORM USED BY A CORRELATOR IN A SERVO CHANNEL 失效
公开(公告)号：US20120014010A1
公开(公告)日：2012-01-19
申请号：US12838336
申请日：2010-07-16
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B27/36
CPC分类号： G11B20/1201 , G11B5/00821 , G11B5/584 , G11B20/10037 , G11B2020/1281 , G11B2020/1484 , G11B2220/913 , G11B2220/953 , G11B2220/956
摘要： Provided are a method, servo channel, and tape drive for determining a reference waveform used by a correlator in a servo channel. Sequences of servo signal samples are provided from read servo signals read from a servo pattern on a recording medium. A determination is made of a reference waveform based on the sequences of servo signal samples and the reference waveform is forwarded. Interpolated servo signals are generated. The interpolated servo signal samples and the forwarded reference waveform are received to generate correlation output samples. Position and velocity information are calculated from the correlation output samples.

5. 发明授权

US07903360B2 Recovering servo information from a synchronous servo channel 失效
标题翻译：从同步伺服通道恢复伺服信息
公开(公告)号：US07903360B2
公开(公告)日：2011-03-08
申请号：US12236450
申请日：2008-09-23
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/09
CPC分类号： G11B5/59644 , G11B20/10009 , G11B20/10037 , G11B20/10231 , G11B20/10527 , G11B2020/10759 , G11B2020/1281 , G11B2220/956
摘要： Provided are a method, servo channel, and tape drive for recovering servo information from a synchronous servo channel. An interpolator reads samples of a servo signal obtained from a servo reader at a rate of one servo sample per clock interval, to produce up to M interpolated servo samples per clock interval. A first buffer buffers interpolation time instants at which the interpolator generates interpolated servo samples. The interpolated servo samples are buffered in a second buffer and the interpolated servo samples are outputted from the second buffer to a correlator to produce correlation signal samples.
摘要翻译：提供了用于从同步伺服通道恢复伺服信息的方法，伺服通道和磁带驱动器。内插器以每个时钟间隔的一个伺服采样的速率读取从伺服读取器获得的伺服信号的采样，以便每个时钟间隔产生多达M个内插的伺服采样。第一缓冲器缓冲内插时间内插器产生内插伺服采样的时间。内插伺服采样被缓冲在第二缓冲器中，并且内插伺服采样从第二缓冲器输出到相关器以产生相关信号采样。

6. 发明授权

US08422163B2 Determining a reference waveform used by a correlator in a servo channel 失效
标题翻译：确定相关器在伺服通道中使用的参考波形
公开(公告)号：US08422163B2
公开(公告)日：2013-04-16
申请号：US13456895
申请日：2012-04-26
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/584
CPC分类号： G11B20/1201 , G11B5/00821 , G11B5/584 , G11B20/10037 , G11B2020/1281 , G11B2020/1484 , G11B2220/913 , G11B2220/953 , G11B2220/956
摘要： Provided are a method, servo channel, and tape drive for determining a reference waveform used by a correlator in a servo channel. Sequences of servo signal samples are provided from read servo signals read from a servo pattern on a recording medium. A determination is made of a reference waveform based on the sequences of servo signal samples and the reference waveform is forwarded. Interpolated servo signals are generated. The interpolated servo signal samples and the forwarded reference waveform are received to generate correlation output samples. Position and velocity information are calculated from the correlation output samples.
摘要翻译：提供了一种用于确定由伺服通道中的相关器使用的参考波形的方法，伺服通道和磁带驱动器。伺服信号样本的序列由从记录介质上的伺服模式读取的读取伺服信号提供。基于伺服信号样本的序列确定参考波形，并且转发参考波形。产生内插伺服信号。接收内插伺服信号采样和转发的参考波形以产生相关输出采样。从相关输出样本计算位置和速度信息。

7. 发明授权

US08169736B2 Method and apparatus to position a head module comprising servo elements and a plurality of data elements 有权
标题翻译：用于定位包括伺服元件和多个数据元素的头模块的方法和装置
公开(公告)号：US08169736B2
公开(公告)日：2012-05-01
申请号：US12505435
申请日：2009-07-17
申请人： Nhan Xuan Bui , Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Kazuhiro Tsuruta
发明人： Nhan Xuan Bui , Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto , Kazuhiro Tsuruta
IPC分类号： G11B5/584 , G11B21/02 , G11B15/46
CPC分类号： G11B5/5552
摘要： A method to position a head module, where the head module comprises at least one servo element and a plurality of data elements, where the servo element and each of the plurality of data elements can detect a servo signal, wherein the method includes moving a sequential information storage medium having a servo band encoded therein across the head module and detecting the servo band using the at least one servo element or any one of the plurality of data elements.
摘要翻译：一种定位头模块的方法，其中头模块包括至少一个伺服元件和多个数据元件，其中伺服元件和多个数据元素中的每一个可以检测伺服信号，其中该方法包括移动顺序信息存储介质，其中跨越所述头模块编码了伺服频带，并且使用所述至少一个伺服单元或所述多个数据单元中的任何一个来检测所述伺服频带。

8. 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。

9. 发明申请

US20100073800A1 RECOVERING SERVO INFORMATION FROM A SYNCHRONOUS SERVO CHANNEL 失效
标题翻译：从同步伺服通道恢复伺服信息
公开(公告)号：US20100073800A1
公开(公告)日：2010-03-25
申请号：US12236450
申请日：2008-09-23
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/09
CPC分类号： G11B5/59644 , G11B20/10009 , G11B20/10037 , G11B20/10231 , G11B20/10527 , G11B2020/10759 , G11B2020/1281 , G11B2220/956
摘要： Provided are a method, servo channel, and tape drive for recovering servo information from a synchronous servo channel. An interpolator reads samples of a servo signal obtained from a servo reader at a rate of one servo sample per clock interval, to produce up to M interpolated servo samples per clock interval. A first buffer buffers interpolation time instants at which the interpolator generates interpolated servo samples. The interpolated servo samples are buffered in a second buffer and the interpolated servo samples are outputted from the second buffer to a correlator to produce correlation signal samples.
摘要翻译：提供了用于从同步伺服通道恢复伺服信息的方法，伺服通道和磁带驱动器。内插器以每个时钟间隔的一个伺服采样的速率读取从伺服读取器获得的伺服信号的采样，以便每个时钟间隔产生多达M个内插的伺服采样。第一缓冲器缓冲内插时间内插器产生内插伺服采样的时间。内插伺服采样被缓冲在第二缓冲器中，并且内插伺服采样从第二缓冲器输出到相关器以产生相关信号采样。

10. 发明授权

US08422162B2 Determining a reference waveform used by a correlator in a servo channel 失效
公开(公告)号：US08422162B2
公开(公告)日：2013-04-16
申请号：US12838336
申请日：2010-07-16
申请人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
发明人： Giovanni Cherubini , Robert Allen Hutchins , Jens Jelitto
IPC分类号： G11B5/584
CPC分类号： G11B20/1201 , G11B5/00821 , G11B5/584 , G11B20/10037 , G11B2020/1281 , G11B2020/1484 , G11B2220/913 , G11B2220/953 , G11B2220/956
摘要： Provided are a method, servo channel, and tape drive for determining a reference waveform used by a correlator in a servo channel. Sequences of servo signal samples are provided from read servo signals read from a servo pattern on a recording medium. A determination is made of a reference waveform based on the sequences of servo signal samples and the reference waveform is forwarded. Interpolated servo signals are generated. The interpolated servo signal samples and the forwarded reference waveform are received to generate correlation output samples. Position and velocity information are calculated from the correlation output samples.

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