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1. 发明申请

US20110032630A1 MULTI-MODE LOOP ADAPTATION SCHEME FOR HIGH-DENSITY DATA RECORDING CHANNEL 审中-公开
标题翻译：用于高密度数据记录通道的多模式环路适配方案
公开(公告)号：US20110032630A1
公开(公告)日：2011-02-10
申请号：US12536435
申请日：2009-08-05
申请人： Jaewook Lee , Sizhen Yang , Umang Mehta , Jerry Hodges , Marc Feller , Turguy Goker
发明人： Jaewook Lee , Sizhen Yang , Umang Mehta , Jerry Hodges , Marc Feller , Turguy Goker
IPC分类号： G11B20/20
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10037 , G11B20/10055 , G11B20/10074 , G11B20/10175 , G11B20/1024 , G11B20/10296 , G11B20/10351 , G11B20/10361 , G11B20/10425 , G11B20/10481 , G11B2220/90 , G11B2220/93
摘要： A circuit for a high-density data recording channel includes a first data detector, a second data detector, one or more multiplexers and a sequence identifier. The first data detector generates a first data detector output, and the second data detector generates a second data detector output. The multiplexers change between a first mode and a second mode to alternately receive the first data detector output and the second data detector output. The sequence identifier receives a data sequence including at least one of a first data sequence, such as VFO data, and a second data sequence, such as random data. The second data sequence includes a greater number of signal levels than the first data sequence. The sequence identifier changes the multiplexers between the first mode and the second mode based on whether the data sequence is the first data sequence or the second data sequence. The data sequence includes a plurality of timing stages. The sequence detector can at least partially control a loop bandwidth of the circuit based on the timing stage of the data sequence.
摘要翻译：用于高密度数据记录通道的电路包括第一数据检测器，第二数据检测器，一个或多个多路复用器和序列标识符。第一数据检测器产生第一数据检测器输出，第二数据检测器产生第二数据检测器输出。复用器在第一模式和第二模式之间改变以交替地接收第一数据检测器输出和第二数据检测器输出。序列标识符接收包括诸如VFO数据的第一数据序列和诸如随机数据的第二数据序列中的至少一个的数据序列。第二数据序列包括比第一数据序列更多数量的信号电平。序列标识符基于数据序列是第一数据序列还是第二数据序列，在第一模式和第二模式之间改变多路复用器。数据序列包括多个定时阶段。序列检测器可以至少部分地基于数据序列的定时级来控制电路的环路带宽。

2. 发明申请

US20090040643A1 METHOD AND APPARATUS FOR WRITING TIMING BASED SERVO TRACKS ON MAGNETIC TAPE USING COMPLEMENTARY SERVO WRITER PAIRS 审中-公开
标题翻译：使用补充伺服写字板在磁带上写入基于时序的伺服轨迹的方法和装置
公开(公告)号：US20090040643A1
公开(公告)日：2009-02-12
申请号：US12174544
申请日：2008-07-16
申请人： Ming-Chih WENG , Turguy Goker , Jerry Hodges , John Koski
发明人： Ming-Chih WENG , Turguy Goker , Jerry Hodges , John Koski
IPC分类号： G11B5/02
CPC分类号： G11B5/584 , G11B5/59638
摘要： Method and apparatus for writing timing based (servo) tracks on magnetic recording tape using complementary servo writer pairs. A magnetic tape intended to store, for instance, computer data conventionally contains servo tracks in addition to the data tracks. Typically many servo tracks and data tracks are arranged laterally across the width of the tape. The adjacent servo tracks (bands) here are complementary in terms of the orientation of their stripes and are written (recorded) by a complementary arranged servo writer pair. This advantageously reduces the position error signal by a substantial amount, even to nearly zero. In one version the servo writers are straight in configuration and in another version they are curved or chevron shape. These complementary servo writer pairs write adjacent servo bands. This takes advantage of the fact that typical servo technology, for instance in the LTO tape format, uses two servo heads, a top and bottom servo head, and averages the position error signal of the top and bottom servo read heads in the tape drive to determine the position error. By writing the servo tracks as described here, this error as written-in is substantially reduced. This is because the top and bottom servo sensors interpret the complementary aspect as being position error signal error in opposite directions, which thereby cancels out.
摘要翻译：使用互补伺服写入器对在磁记录带上写入基于时序（伺服）轨迹的方法和装置。旨在存储例如计算机数据的磁带通常包含除了数据轨道之外的伺服轨道。通常，许多伺服轨迹和数据轨迹横跨磁带的宽度布置。相邻的伺服磁道（带）在它们的条带的方向上是互补的，并由互补的伺服写入器对写入（记录）。这有利地将位置误差信号减少了大量，甚至几乎为零。在一个版本中，伺服写入器是直的配置，在另一个版本中它们是弯曲的或人字形的。这些互补伺服写入器对写入相邻的伺服带。这具有以下事实：例如以LTO磁带格式的典型伺服技术使用两个伺服磁头，顶部和底部伺服磁头，并平均磁带驱动器中顶部和底部伺服读取头的位置误差信号确定位置误差。通过如这里所述写入伺服磁道，大大减少了写入的错误。这是因为顶部和底部伺服传感器将互补方面解释为相反方向的位置误差信号误差，从而抵消。

3. 发明授权

US07436621B2 Azimuth compensation using combination bump pes detection 失效
标题翻译：使用组合凸点检测的方位角补偿
公开(公告)号：US07436621B2
公开(公告)日：2008-10-14
申请号：US11550530
申请日：2006-10-18
申请人： Turguy Goker , Ming-chih Weng , Jerry Hodges , Kempton Redhead
发明人： Turguy Goker , Ming-chih Weng , Jerry Hodges , Kempton Redhead
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/00826 , G11B5/56
摘要： An example embodiment provides for an apparatus and method, for use in a tape drive system, that supplies tape azimuth error information transduced from servo read elements that are located on differing bumps of a magnetic read/write head. Non-azimuth error information is also transduced from servo read elements located on a read bump. The azimuth error and non-azimuth are utilized to correctly place the magnetic head at a currently selected track of the tape for which data is being written. In one implementation, the servo read elements utilized for transducing the azimuth information are substantially aligned with each other relative to a tape path and disposed on separate bumps. In another implementation, the servo read elements utilized for transducing the azimuth information are not substantially aligned with each other and are disposed diagonally on opposite bumps.
摘要翻译：示例性实施例提供了一种在磁带驱动系统中使用的装置和方法，其提供从位于磁读/写磁头的不同凸块上的伺服读取元件转换的磁带方位误差信息。非方位误差信息也从位于读凸块上的伺服读取元件转换。方位角误差和非方位角被用于将磁头正确地放置在正在写入数据的磁带的当前选定轨道上。在一个实施方式中，用于转换方位信息的伺服读取元件相对于磁带路径彼此基本对齐并且设置在单独的凸块上。在另一实施方式中，用于转换方位信息的伺服读取元件基本上不对准，并且对角地设置在相对的凸块上。

4. 发明授权

US07203027B2 System and method for measuring the position of a tape drive head 失效
标题翻译：用于测量磁带驱动器头位置的系统和方法
公开(公告)号：US07203027B2
公开(公告)日：2007-04-10
申请号：US10986256
申请日：2004-11-10
申请人： Patrick Henry McCormack , Turguy Goker , Harold O. Ellison , Mark Decot , Jerry Hodges
发明人： Patrick Henry McCormack , Turguy Goker , Harold O. Ellison , Mark Decot , Jerry Hodges
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/584
摘要： A sensor for measuring the position of the head of a tape drive is disclosed. The sensor includes a light emitter movably connected to the head; a light sensor movably connected to the head and rigidly connected to the light emitter and located to receive a beam of light from said light emitter; and, a light interrupter rigidly connected to the head and located for interrupting the light beam.
摘要翻译：公开了一种用于测量磁带驱动器头部位置的传感器。传感器包括可移动地连接到头部的光发射器; 光传感器，其可移动地连接到所述头部并且刚性地连接到所述光发射器并且被定位成接收来自所述光发射器的光束; 以及刚性地连接到头部并且被定位用于中断光束的光断续器。

5. 发明授权

US08594254B2 Waveform interpolator architecture for accurate timing recovery based on up-sampling technique 有权
标题翻译：基于上采样技术的波形插值器架构，用于精确的定时恢复
公开(公告)号：US08594254B2
公开(公告)日：2013-11-26
申请号：US12891647
申请日：2010-09-27
申请人： Jaewook Lee , Umang Mehta , Jerry Hodges
发明人： Jaewook Lee , Umang Mehta , Jerry Hodges
IPC分类号： H04L25/08 , H04L27/28
CPC分类号： H04L7/0029 , H03H17/0282 , H03H17/0657
摘要： In one embodiment, an interpolator-based timing recovery system improves accuracy by calculating additional sampled signals of a digital signal and generating an interpolation based on the additional sampled signals and the digital signal, while employing a parallel architecture to maintain system clock frequency and a pipeline architecture to minimize sampled data memory requirement.
摘要翻译：在一个实施例中，基于内插器的定时恢复系统通过计算附加的数字信号采样信号并基于附加采样信号和数字信号产生内插来提高精度，同时采用并行架构来维持系统时钟频率和管线架构以最小化采样数据存储器要求。

6. 发明申请

US20120076244A1 WAVEFORM INTERPOLATOR ARCHITECTURE FOR ACCURATE TIMING RECOVERY BASED ON UP-SAMPLING TECHNIQUE 有权
标题翻译：基于上采样技术的精确时序恢复的波形插值器架构
公开(公告)号：US20120076244A1
公开(公告)日：2012-03-29
申请号：US12891647
申请日：2010-09-27
申请人： Jaewook LEE , Umang MEHTA , Jerry HODGES
发明人： Jaewook LEE , Umang MEHTA , Jerry HODGES
IPC分类号： H04L27/06
CPC分类号： H04L7/0029 , H03H17/0282 , H03H17/0657
摘要： In one embodiment, an interpolator-based timing recovery system improves accuracy by calculating additional sampled signals of a digital signal and generating an interpolation based on the additional sampled signals and the digital signal, while employing a parallel architecture to maintain system clock frequency and a pipeline architecture to minimize sampled data memory requirement.
摘要翻译：在一个实施例中，基于内插器的定时恢复系统通过计算附加的数字信号采样信号并基于附加采样信号和数字信号产生内插来提高精度，同时采用并行架构来维持系统时钟频率和管线架构以最小化采样数据存储器要求。

7. 发明授权

US07477474B2 Servo writing and decoding position error signal for linear tape drives 失效
标题翻译：线性磁带驱动器的伺服写入和解码位置误差信号
公开(公告)号：US07477474B2
公开(公告)日：2009-01-13
申请号：US11692723
申请日：2007-03-28
申请人： Turguy Goker , Ming-chih Weng , Jerry Hodges
发明人： Turguy Goker , Ming-chih Weng , Jerry Hodges
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： The present invention, in particular embodiments, is directed to methods, apparatuses and systems that facilitate recording of servo signals on a recording medium such as magnetic tape with high accuracy. Variation of inter-frame and intra-frame placement is substantially reduced by writing successive frames or sub-frames based on a detection of a previously-written frame or sub-frame by a read element. Appropriate placement of the read element in relation to servo write elements, on a multi-gap servo write head, ensures the correct placement of subsequent frames on the recording medium.
摘要翻译：本发明在特定实施例中涉及便于在诸如磁带的记录介质上以高精度记录伺服信号的方法，装置和系统。基于通过读取元素对先前写入的帧或子帧的检测来写入连续的帧或子帧，帧间和帧内放置的变化大大减少。在多间隙伺服写入头上，读取元件相对于伺服写入元件的适当放置确保了后续帧在记录介质上的正确放置。

8. 发明申请

US20070285831A1 Azimuth Compensation Using Combination Bump Pes Detection 失效
标题翻译：使用组合凸块检测的方位补偿
公开(公告)号：US20070285831A1
公开(公告)日：2007-12-13
申请号：US11550530
申请日：2006-10-18
申请人： Turguy Goker , Ming-chih Weng , Jerry Hodges , Kempton Redhead
发明人： Turguy Goker , Ming-chih Weng , Jerry Hodges , Kempton Redhead
IPC分类号： G11B5/584 , G11B20/20
CPC分类号： G11B5/584 , G11B5/00826 , G11B5/56
摘要： An example embodiment provides for an apparatus and method, for use in a tape drive system, that supplies tape azimuth error information transduced from servo read elements that are located on differing bumps of a magnetic read/write head. Non-azimuth error information is also transduced from servo read elements located on a read bump. The azimuth error and non-azimuth are utilized to correctly place the magnetic head at a currently selected track of the tape for which data is being written. In one implementation, the servo read elements utilized for transducing the azimuth information are substantially aligned with each other relative to a tape path and disposed on separate bumps. In another implementation, the servo read elements utilized for transducing the azimuth information are not substantially aligned with each other and are disposed diagonally on opposite bumps.
摘要翻译：示例性实施例提供了一种在磁带驱动系统中使用的装置和方法，其提供从位于磁读/写磁头的不同凸块上的伺服读取元件转换的磁带方位误差信息。非方位误差信息也从位于读凸块上的伺服读取元件转换。方位角误差和非方位角被用于将磁头正确地放置在正在写入数据的磁带的当前选定轨道上。在一个实施方式中，用于转换方位信息的伺服读取元件相对于磁带路径彼此基本对齐并且设置在单独的凸块上。在另一实施方式中，用于转换方位信息的伺服读取元件基本上不对准，并且对角地设置在相对的凸块上。

9. 发明申请

US20060098331A1 System and method for measuring the position of a tape drive head 失效
标题翻译：用于测量磁带驱动器头位置的系统和方法
公开(公告)号：US20060098331A1
公开(公告)日：2006-05-11
申请号：US10986256
申请日：2004-11-10
申请人： Patrick McCormack , Turguy Goker , Harold Ellison , Mark Decot , Jerry Hodges
发明人： Patrick McCormack , Turguy Goker , Harold Ellison , Mark Decot , Jerry Hodges
IPC分类号： G11B5/584 , G11B21/02
CPC分类号： G11B5/584
摘要： A sensor for measuring the position of the head of a tape drive is disclosed. The sensor includes a light emitter movably connected to the head; a light sensor movably connected to the head and rigidly connected to the light emitter and located to receive a beam of light from said light emitter; and, a light interrupter rigidly connected to the head and located for interrupting the light beam.
摘要翻译：公开了一种用于测量磁带驱动器头部位置的传感器。传感器包括可移动地连接到头部的光发射器; 光传感器，其可移动地连接到所述头部并且刚性地连接到所述光发射器并且被定位成接收来自所述光发射器的光束; 以及刚性地连接到头部并且被定位用于中断光束的光断续器。

10. 发明申请

US20080239559A1 SERVO WRITING AND DECODING POSITION ERROR SIGNAL FOR LINEAR TAPE DRIVES 失效
标题翻译： SERVO写入和解码位置错误信号线性带驱动
公开(公告)号：US20080239559A1
公开(公告)日：2008-10-02
申请号：US11692723
申请日：2007-03-28
申请人： Turguy Goker , Ming-chih Weng , Jerry Hodges
发明人： Turguy Goker , Ming-chih Weng , Jerry Hodges
IPC分类号： G11B15/46
CPC分类号： G11B5/584
摘要： The present invention, in particular embodiments, is directed to methods, apparatuses and systems that facilitate recording of servo signals on a recording medium such as magnetic tape with high accuracy. Variation of inter-frame and intra-frame placement is substantially reduced by writing successive frames or sub-frames based on a detection of a previously-written frame or sub-frame by a read element. Appropriate placement of the read element in relation to servo write elements, on a multi-gap servo write head, ensures the correct placement of subsequent frames on the recording medium.
摘要翻译：本发明在特定实施例中涉及便于在诸如磁带的记录介质上以高精度记录伺服信号的方法，装置和系统。基于通过读取元素对先前写入的帧或子帧的检测来写入连续帧或子帧，帧间和帧内放置的变化大大减少。在多间隙伺服写入头上，读取元件相对于伺服写入元件的适当放置确保了后续帧在记录介质上的正确放置。

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